Patent Description:
Waste oil, originated from the mineral oil, animal oil or plant oil, could be converted into fuel that could be used by engine, burner or boiler, or be converted into recycled raw material through a chemical transformation process. The waste oil could be regarded as a typical green energy that could vitally contribute on the economical development, energy saving and carbon reduction and also contribute on environmental protection and suppression of air pollution.

However, in recent years, the waste oils are illegally obtained by unscrupulous party and are converted into edible oil selling for profiteering on the market. In addition, regarding the industrial waste oils such as waste lubricant oil or waste solvent, they are illegally discarded to pollute the hillside, river, soil or even the ocean. The illegal disposal of the industrial waste oils also generates great impact on the environment and becomes problem about which the governments or environmental authorities are concerned. Conventionally, where the oil comes from and where the waste oil goes to is hardly to be controlled and managed by the authorities concerned, and it is also difficult to prevent the waste oil from entering illegal factory or being discarded illegally. Accordingly, whether the government or the privately owned company, there has a need to provide a system and method for simply, efficiently and effectively managing the footprint of waste oil including the source where it comes from and destination where it goes to so that the food safety of nationals could be effectively controlled.

In the procedure for recycling the waste oil, another important issue is how to conveniently recycled waste oil and effectively grasp the quality of waste oil instantaneously so as to calculate the price of the recycled waste oil. The factors for defining the quality of the waste oil include water content, acid value, iodine value, and residue of the waste oil. These factors are important for determining the recycling price of the waste oil. Conventionally, taking water content for example, the procedure for examining the quality of waste oil includes steps of sampling the recycled waste oil, measuring the weight of the sampled waste oil, heating the sampled waste oil to remove the water, measuring the weight of heated waste oil, and finally, determining the rate of water content according to the measurement before and after heating the waste oil. It is clear that the previously-described procedures are time-consuming, and it usually takes at least <NUM> to <NUM> minutes. Since the quality of waste oil could not be obtained instantaneously so that the recycling company could not promptly identify and fairly calculate the price and value of the waste oil.

Accordingly, there has need for providing a device and method for recycling the waste and instantaneously inspecting quality and calculating value of the waste so as to solve the insufficient part of the prior art.

<CIT> discloses a device which performs the steps of obtaining samples of the fluid before and after treatment, delivering the samples to a particle imaging system, obtaining image information of particles in the samples, including particle colors, and comparing the difference in particle color from the first sample to the second sample. A change in particle color detected is indicative of particle death.

<CIT> discloses a device for optical inspection and value determination of a waste liquid comprising: a transparent part; a first pipeline connected to the transparent part; a draining device configured to drain the waste liquid into the transparent part via the first pipeline; a second pipeline provided on the other side of the transparent part to the first pipeline; an illumination device for illuminating the transparent part; a device configured to acquire light from the waste liquid passing through the transparent part and generate at least one signal with respect to the transparent part; a signal processing module configured to receive the signal and determine a quality of the waste liquid according to the signal; a flow rate measuring unit disposed adjacent to the transparent part and configured to measure a flow rate of the waste liquid passing through the second pipeline and determine a volume of the waste liquid according to the flow rate of the waste liquid; and a calculating unit electrically coupled to the flow rate measuring unit and the signal processing module to calculate a value of the waste liquid according to the measured volume of the waste liquid and the determined quality of the waste liquid.

The present invention provides devices as set out in the appended set of claims for instantaneously examining the quality of the waste, in which a light source is utilized to project lights onto the waste and an image acquiring device is utilized to detect the light from the waste and generates images with respect to the waste. After that, the images are analyzed to instantaneously determine the quality of the waste according to the quantitative information such as spectrum, color, or transparency obtained from the image or according to a comparing result with image samples having known quality.

The present invention provides a device for instantaneously inspecting the quality of the waste. In case of recycling waste liquid, when the waste liquid is drained, the light is projected onto the tube where the waste fluid flowing therethrough and the image acquiring device is controlled to take image of the tube. The images are further analyzed to determined the quality of the waste liquid according to the spectrum, color or transparency within a short time, such as few seconds, for example, so that the value or price of the recycled waste liquid could be determined almost in the meantime. By means of the novelty inspection method, the problem that the quality of the waste liquid could not be instantaneously inspected would be solved such that the efficiency of recycling the waste liquid could be improved and the objective that more instantaneous, more fair without cheating could be achieved.

The present invention provides devices as set out in the appended set of claims for instantaneously inspecting the quality of the waste liquid and calculating the price and value of the waste liquid according to the determined quality. The price and value of the waste liquid could be transferred to the consumer by different transaction ways. For example, the transaction ways could be, but should not be limited to, a third-party payment, such as LINE pay, for example, chip card storing electronic currency, or bank card for transferring money to bank account. In addition, the consumer could also directly exchange commodity according to the determined price of the waste liquid through a transaction platform built in the device or in remote server. Through the different transaction ways, the will of collecting and recycling the waste liquid of consumers could be increased, and effect of national environmental protection could also be enhanced.

In one embodiment, the present disclosure provides a device for instantaneously inspecting waste quality, comprising a transparent part, a draining device, an illumination device, and an image acquiring device. The transparent part has a waste liquid flowing therethrough. The draining device is utilized for draining the waste liquid and forcing the waste liquid passing through the transparent part. The illumination device for illuminating the transparent part. The image acquiring device is configured to detect the light from the transparent part and generate an image signal with respect to the transparent part. The signal processing module is electrically coupled to the image acquiring device for receiving the image signal and determining a quality of the waste liquid according to the image signal, wherein the signal processing module processes the image signal so as to obtain an image characteristic with respect to the image signal thereby determining the quality of the waste liquid, wherein the image characteristic is corresponding to at least one of a spectrum information, a color information, and a transparency information associated with the image signal of the waste liquid.

In one embodiment, the present disclosure provides a waste liquid recycling device, comprising a transparent part, a draining device, an illuminating device, an image acquiring device, a signal processing module, and a value determining module. The draining device is utilized for draining the waste liquid from a collecting container and forcing the waste liquid passing through the transparent part. The illuminating device for illuminating the transparent part. The image acquiring device is configured to detect the light from the transparent part and generate an image signal with respect to the transparent part. The signal processing module is electrically coupled to the image acquiring device for receiving the image signal and determining a quality of the waste liquid according to the image signal, wherein the signal processing module processes the image signal so as to obtain an image characteristic with respect to the image signal thereby determining the quality of the waste liquid, wherein the image characteristic is corresponding to at least one of a spectrum information, a color information, and a transparency information associated with the image signal of the waste liquid.

In one embodiment, the present disclosure provides a method for recycling the waste liquid, comprising steps of providing a waste liquid recycling device comprising a transparent part, an illuminating device for illuminating the transparent part, an image acquiring device, a signal processing module electrically coupled to the image acquiring unit, and a value determining module, draining a waste liquid passing through the transparent part by a draining device, detecting lights from the transparent part by the image acquiring device for generating at least one image signals, receiving the image signal and determine a quality of the waste liquid according to the image signal by the signal processing module, wherein the signal processing module processes the image signal so as to obtain an image characteristic with respect to the image signal thereby determining the quality of the waste liquid, wherein the image characteristic is corresponding to at least one of a spectrum information, a color information, and a transparency information associated with the image signal of the waste liquid, and, finally, determining a value of the waste liquid according to the quality and an amount of measurement of the waste liquid by the value determining module.

The present invention will now be specified with reference to its preferred embodiments illustrated in the drawings, in which:.

The invention disclosed herein is directed to a device for recycling waste and instantaneously inspecting quality and calculating value of the waste. In the following description, numerous details are set forth in order to provide a thorough understanding of the present invention. It will be appreciated by one skilled in the art that variations of these specific details are possible while still achieving the results of the present invention as set out in the appended set of claims. In other instance, well-known components are not described in detail in order not to unnecessarily obscure the present invention.

Please refer to <FIG> which illustrates a device for instantaneously inspecting quality of the waste according to one embodiment of the present invention. In the present embodiment, the waste is waste liquid. The device <NUM> comprises a draining device <NUM>, an illuminating device <NUM>, an image acquiring device <NUM>, and a signal processing module <NUM>. The draining device <NUM> is utilized to drain a waste liquid <NUM>, which could be a valuable waste. In one embodiment, the waste liquid could be waste oil, such as waste mechanical oil, waste lubricant oil, a waste edible oil, or waste solvent. In the present embodiment, the waste liquid <NUM> is waste edible oil. The waste liquid <NUM> is accommodated in a container A. The container A could be arranged in a waste recycling machine. Alternatively, the container A could also be, but should not be limited to, a waste oil drum utilized by the caterer, or a household bucket.

The draining device <NUM> has a draining nozzle <NUM>, and draining pipeline <NUM>, and a transparent part, which is a transparent tube segment in the present embodiment. The draining nozzle <NUM> is inserted into the interior of the container A for draining the waste liquid <NUM> inside the container A. The draining pipeline <NUM> is utilized to guide the waste liquid <NUM> drained by the draining nozzle <NUM>. The transparent tube segment <NUM> is coupled to the draining pipeline <NUM> so that the waste liquid <NUM> in the draining pipeline <NUM> could passes through the transparent tube segment <NUM>. In addition, another pipeline <NUM> is coupled to the transparent tube segment <NUM> for guiding the waste liquid 90a passing through the transparent tube segment <NUM> into a storage container B, in which the waste liquid 90a accommodated is qualified to be recycled. It is noted that the draining device <NUM> is well known art to draining the liquid. In one embodiment, the draining device <NUM> is operated through a negative pressure generating device <NUM> through which the negative pressure is transmitted into the draining nozzle <NUM> by the draining pipeline <NUM> so that the draining nozzle <NUM> could drain the waste liquid <NUM> from the container A. It is noted that although the transparent tube segment <NUM> is a whole transparent tube segment in the present embodiment, it will not limited thereto. There still has another embodiment for implementing the transparent tube segment. For example, the cross section of transparent tube segment will not be limited to the circular shape, other shape such as rectangle shape or polygon shape could also be available. In addition, the transparent tube segment <NUM> could also be a transparent cover formed on the draining pipeline <NUM>. Alternatively, the pipeline <NUM> could also be a transparent pipeline, and the transparent tube segment is a part of the transparent pipeline.

The illumination device <NUM> is utilized to project lights onto the transparent tube segment. The light source of the illumination device <NUM> has no specific limitation, which could be a broadband light, such as white light, for example, or narrow band light, such as laser, for example. Alternatively, the light source could also be an infrared light source. The user could select proper type of light source as the illumination device according to the user's need.

The image acquiring device <NUM> detects lights from the transparent tube segment <NUM> during the draining device <NUM> draining the waste liquid <NUM>, and generates at least one image signals with respect to the illuminated transparent tube segment <NUM>. It is noted that the lights from the transparent tube segment <NUM> could be lights penetrating through the transparent tube segment <NUM> having the waste liquid or lights reflecting from the waste liquid inside the transparent tube segment <NUM>. Since the material of the transparent tube segment <NUM> is a transparent material, such as glass or plastic material, for example, when the lights projected onto the transparent tube segment <NUM> having the waste liquid <NUM> flowing therethrough, a transparency with respect to the waste liquid will be varied according to the composition or quality of the waste liquid <NUM>.

Taking the waste edible oil as an example, the water content of the waste oil will affect the transparency; therefore, when the water content is varied, the level of the transparency will be varied as well. By using the phenomenon, it is capable of instantaneously inspecting the waste edible oil through the images acquired by the image acquiring device <NUM> thereby determining the quality of the waste edible oil within very short of time, such as few seconds or even shorter, depending on the speed of image processing. Accordingly, under the condition that the illumination device <NUM> projects the lights onto the transparent tube segment <NUM>, the transparency characteristic of the images generated by the image acquiring device <NUM> could be analyzed so as to determine the quality of the waste liquid. It is noted the characteristic for determining the waste liquid is not limited to the transparency. For example, the shape, the appearance, the spectrum, and the color that could be quantitated can be alternatives for determining quality of the waste liquid.

It is also noted that, the images could be a video formed by a series of images, a single image obtained at a specific time point, or multiple images obtained at a specific image acquiring frequency, such as <NUM> seconds taking one image, for example. In addition, the image acquiring device <NUM> and the illumination device <NUM> can be arranged at the same side or at opposite side of the transparent tube segment <NUM>.

The signal processing module <NUM> is electrically coupled to the image acquiring device <NUM> for receiving the images and determining the quality of the waste liquid. In the present embodiment, the signal processing module <NUM> converts at least one images into quantitative values and determines the quality of the waste liquid according to the quantitative values, wherein the quantitative values are corresponding to at least one of the shape, appearance, color, and transparency. In one embodiment, if the images is video, after the signal processing module <NUM> receives the images, the signal processing module <NUM> will samples at least one frames from the images according to the predetermined sampling frequency or sampling rate.

In one embodiment, taking water content of waste edible oil for example, the transparency of the waste edible oil will be varied according to the water content in the waste edible oil. Accordingly, the brightness and contrast characteristics of each pixel in the acquired images of the waste edible oil having different transparency will also be varied. The signal processing module <NUM> could obtain the quantitative values according to the brightness and contrast of the images thereby comparing the obtained quantitative values with a predetermined standard value and determining the quality of the waste edible oil according the comparing result. In one embodiment, the signal processing module <NUM> converts each image into grey scale image and obtains the brightness value, contrast value or the combination thereof. In another embodiment, the signal processing module <NUM> has capability of artificial intelligence for adjusting the predetermined standard values according to the big data of quantitative values with respect to the characteristic of shape, appearance, spectrum, color, transparency, or combination of at least two previously described characteristics.

In one embodiment, the signal processing module <NUM> could be integrated circuit module having signal processing capability, such as CPU, MCU or other elements having processing capability. Alternatively, the signal processing module <NUM> could also be a device such as notebook, workstation, computer, server or PAD computer.

In one embodiment, the user could previously set the standard value associated with the acceptable quality in the signal processing module <NUM>. Taking the water content for example, when the signal processing module <NUM> determines the transparency of the waste edible oil under the standard value of waste edible oil according to the acquired images, a warning message would be emitted immediately and the draining device <NUM> is stopped to drain the waste liquid immediately.

In one embodiment, the quality of waste liquid could be determined according to each frame of the captured video acquired by the image acquiring device <NUM>. Alternatively, a sampling rate is configured and a single image is acquired according to the configured sampling rate. The obtained sampling image is then judged by the signal processing module <NUM> to determine the quality of the waste liquid. Whether the continuous frames or periodically acquired images are utilized to judge the quality of waste liquid, the quality of the recycled waste liquid could be quickly judged and the draining operation could be stopped immediately once quality of the waste liquid is under the standard, whereby the dispute between the recycle company and user or waste liquid provider could be eliminated and the time cost of recycling waste liquid could be saved.

It is noted that although the determination about the quality of waste liquid is explained by taking water content inside the waste liquid as an example, other parameters such as iodine value, or acid value could also be converted into a relationship with the transparency, shape, appearance, spectrum, color so that a database associated different parameters could be established for determining the quality of the waste liquid. Taking waste edible oil as an example, the recycling company could establish database about quality levels, such as excellent, medium, or poor level according to transparency, spectrum, or color to determine the water content, iodine value, acid value of the waste liquid thereby determining the quality of the waste liquid. It is noted that the level stages for determining the quality of waste liquid are not limited to the above three exemplary stages, and the user could define the number of quality levels according to the needs.

In another embodiment, please refer to <FIG>, the signal processing module <NUM> is electrically coupled to an image database having a plurality of image samples associated with the quality of the waste liquid. In one embodiment, taking the water content of waste edible oil for example, the user could establish different image samples respectively corresponding to different water content levels in the waste edible oil. In one embodiment, the user could provide a plurality of containers respectively having waste edible oil with different known water contents. Then, the waste edible oil in each container is drained into the transparent tube segment through the pipeline, and the image acquiring device taking the images with respect to waste edible oil having different known water contents drained from different container. The images are taken as the image samples and are stored in the database <NUM>. In one embodiment, the database could be arranged in a remote server that could be connected by the signal processing module <NUM> through wire connection or wireless connection. Alternatively, the database <NUM> could be a local database directly arranged in the same computer in which the signal processing module <NUM> is also integrated, or arranged in a separated computer electrically coupled to the signal processing module <NUM> through network. In one embodiment, if the image signal is referred to video signal, when the signal processing module <NUM> receives the image signal, each frame within the image signal representing different time point is separated and is compared with the image samples pre-stored in the database. The comparing method to determine if the two images are the same/similar or not is well known in the art. For example, the contrast or brightness in the region of interest of the acquired image and image sample are compared with each other for determining the acquired image is the same as or similar to the image sample or not.

Please refer to the <FIG>, which illustrates a device for recycling the waste according one embodiment of the present invention. The device could combine the instantaneously inspecting device shown as <FIG> or <FIG>. In the present embodiment, the architecture shown in <FIG> is utilized for inspecting the quality of the waste liquid. In the embodiment shown in <FIG>, the device for recycling waste liquid comprises the device <NUM> for instantaneously inspecting quality of the waste liquid, container B, and a value determining module <NUM>. The container B is communicated with the draining device <NUM>. In the present embodiment, the waste liquid 90a after passing the quality inspection will be guided into the container B. The value determining module <NUM>, in the present embodiment, comprises a weight measuring unit <NUM> and a calculating unit <NUM> electrically coupled to the weight measuring unit <NUM>. In one embodiment, the weight measuring unit <NUM> and the calculating unit <NUM> could be a separated unit, respectively. Alternatively, the weight measuring unit <NUM> and the calculating unit <NUM> could be integrated as a single module. In another embodiment, the calculating unit <NUM> could be integrated with the signal processing module <NUM>. It is noted that the calculating unit <NUM> could be a hardware device formed by electrical circuit, or alternatively, it could be implemented by the software, or a combination of hardware and software. After the waste edible oil is drained and inspected, the value determining module <NUM> will measure the weight of waste liquid 90a in the container B, and calculate the total value of the waste liquid.

In the present embodiment, the device for recycling the waste liquid further comprises a display <NUM> and a value storage unit <NUM>. The display <NUM> is utilized to display inspected information when the waste liquid is recycled and display transaction information when the value of the recycled waste liquid is determined. In one embodiment, the images acquired by the image acquiring device <NUM> could also be shown on the display <NUM>. Moreover, the information associated with the value of the waste, such as weight or value calculated by the value determining module <NUM> could also be shown on the display <NUM>. In alternative embodiment, if the inspected quality is under the standard level, or any abnormal information is occurred, the information could also be shown on the display <NUM>.

The value storage unit <NUM>, in one embodiment, is a card reader for accessing chip card <NUM> having capability of electronic currency or digital currency for electronic transaction. The chip card could be, but should not be limited to EasyCard® issued in Taiwan, or Suica® card and PASMO® card issued in Japan. In the embodiment of card reader, the value calculated by the value determining module <NUM> is converted into electronic money that could be electronically stored into the chip card <NUM> by the value storage unit <NUM>. The stored money amount is also shown on the display <NUM>.

In another embodiment, the value storage unit <NUM> could store the converted money into the account tied with the smart phone of the user through a third party payment mechanism. In the present embodiment, the element <NUM> represents the smart device, such as smart phone, or PAD computer, for example. The third party payment mechanism could be, but should not limited to, line® payment, PayPal® payment, WeChat®, or AliPay®, and etc. In one embodiment, an App, such as Line, WeChat, installed in the smart device is tied with an electronic account of the user so that the value storage unit <NUM> could store the converted money or currency into the corresponding account through the smart device and APP according to the third party payment policy. Alternatively, the value storage unit <NUM> could convert the value into credit points that could accumulated by the user. The credit points could be stored into a virtual account provided by the recycle company. The credit points could be accumulated and be utilized to discount the price when the users buy products in the stores or shops having business collaboration with the recycle company.

In another embodiment, the value storage unit <NUM> could be a card reader of bank card or debit card so that the user could insert the bank card or debit card corresponding to a specific bank account into the value storage unit <NUM> whereby the bank card/debit card could connect to the remote database of the bank and start a cloud electronic transaction with the bank. In the present embodiment, the value determining module <NUM> evaluates the value of the waste liquid in the form money or currency and deposit the money into the bank account associated with the inserted bank card through the value storage unit <NUM>. The stored money could also be shown on the display.

Please refer <FIG>, which illustrates device for recycling the waste according to another embodiment of the present invention. In the present embodiment, basically, it is similar with the embodiment shown in <FIG>. The different part is the value determining module <NUM> of the device <NUM> for recycling the waste is not a weight measuring unit but a flow rate measuring unit 300a, instead. In the present embodiment, the calculating unit <NUM> and flow rate measuring unit 300a are the separated devices. In another embodiment, the calculating unit <NUM> and flow rate measuring unit 300a are integrated as a single unit. It is noted that the calculating unit <NUM> could a hardware device or a software program or the combination of hardware and software. When the waste liquid is drained, the value determining module <NUM> will measure the volume of the waste liquid 90a flowing into the container B according to the flow rate passing through the transparent tube segment <NUM> measured by flow rate measuring unit 300a and time. Once the value of unit volume is known, the value determining module <NUM> can calculate the total value of the waste liquid 90a in the container B.

Please refer to <FIG>, which illustrates another embodiment of the device for recycling the waste. In the present embodiment, basically, it is similar to the embodiment shown in <FIG>. The different part is that a transaction module <NUM> electrically coupled to a cloud transaction platform <NUM> is arranged in the device <NUM> for making an exchanging transaction. The transaction module <NUM> provides a commodity list having commodities shown on the display <NUM> so that the user could know that what kinds of commodities could be traded when the value of the waste liquid is determined. In one embodiment, when the value of the waste liquid is determined, without choosing to store the value into chip card or store into the bank account, the user could pick at least one commodity through the display, e.g. touch display. Once the commodities are determined, the user could choose to make an exchanging transaction according to the determined value. After the exchanging transaction, if there still has remained value, it could be converted into electronic currency and stored into the chip card or converted into money stored into bank account through the bank card. On the contrary, if the determined value is insufficient to exchange the commodities that are selected by the user, the insufficient money could be deducted through electronic currency stored in the chip card or through bank card. In addition, it is also noted that the transaction module <NUM> could be an independent device combined with hardware and software, a software program or a device integrated into the signal processing module <NUM>.

Please refer to <FIG>, which illustrates another embodiment of device for recycling the waste. In the present embodiment, basically, it is similar to the embodiment shown in <FIG>, the different part is that the qualified waste liquid is not stored in the container B in or near the device <NUM> but is guided into a tank <NUM> arranged at the remote location, such as recycling factory, through a guiding conduit <NUM>. Regarding the value of the qualified waste liquid could be implemented by the flow rate measuring unit and the calculating unit.

Please refer to <FIG>, which illustrates a method for recycling the waste. At first, a step <NUM> is performed to provide a device for recycling the waste liquid. The device could be any one of the device shown in <FIG>. In the present embodiment, the device shown in <FIG> is utilized. Next, a step <NUM> is performed to operate the draining device <NUM> to drain the waste liquid so that the waste liquid <NUM> could pass through the transparent tube segment <NUM>. During the waste liquid passing through the transparent tube segment <NUM>, the light emitted from the illumination device is projected onto the transparent tube segment <NUM>.

After that, step <NUM> is performed to acquire the images of the transparent tube segment <NUM> by the image acquiring device <NUM> thereby generating image signals. In the present embodiment, the images are continuous frames forming a video. Next, step <NUM> is performed to receive the image signals by the signal processing module <NUM> by which a quality of the waste liquid passing through the transparent tube segment <NUM> could be determined. In the step <NUM>, since the image signals are continuously acquired by the image acquiring device <NUM>, the signal processing module <NUM> could instantaneously inspect the quality of the waste liquid according to the quantitative data with respect to shape, appearance, spectrum, color or transparency analyzed and obtained from the image signals or according to a comparison result between the sampled images and the standard images. If the quality of the drained waste liquid is below the standard level, the draining device will stop draining the waste liquid; otherwise, the waste liquid will be continuously drained after the waste liquid in the container A becomes empty.

After that, a step <NUM> is performed to determine the value of the qualified waste oil by the value determining module <NUM> according to the volume or weight of the waste liquid. Next, a transaction step <NUM> is performed wherein the value determined in the step <NUM> is returned to the user through a specific transaction method. In one embodiment, the value could be converted into the electrical currency or money and transmitted to the user through a third party payment policy, or transferring. For example, the previously described transaction methods could be performed by the element <NUM> electrically coupled to the transaction module <NUM>. The element <NUM> could be a smart device, chip card or bank card.

Alternatively, the transaction method in step <NUM> could also be performed by exchanging process. For example, after determining the value of the recycled waste liquid, a step <NUM> is performed to inquire the user what kind of transaction method that the user would like to select. If the user selects the money transaction, a step 651a is performed to pay the user by third party payment for storing electronic currency into a chip card, or into a virtual account, or transferring to bank account of the user. If the user selects the commodity exchanging process, a step 651b is performed to display exchangeable commodity list and determined value on the display. In the step 651b, the device is electrically coupled to the cloud transaction server, e.g. shown in <FIG>, and the commodities that could be exchanged are listed on the display. Next step <NUM> is performed that the user could select the required commodity type and amount from the display. After that, a step <NUM> is performed to convert the selected commodity and amount into price and then the price is compared to the value of the recycled waste liquid. If the price is equal to the value, the step <NUM> is performed to ask the home delivery information and finish the exchanging process. However, in one case, if the value is insufficient, the device will further ask the user if additional deduction is available to be performed or not. If the user chooses No, the transaction will be canceled and step will back to <NUM>. If the user chooses Yes, then many kinds of paying ways, such as third party payment, transferring money, or electronic currency will be shown on the display so that the user could choose the way for paying the money. If there has remaining value after the exchanging process, the display will show the multiple ways, such as third party payment, transferring money, or electronic currency, so that the user could select the way to get the remaining value.

Claim 1:
A device for optical inspection of a waste liquid (<NUM>) including a water content affecting a quality of the waste liquid and for determining a value of the waste liquid (<NUM>), comprising:
a transparent part (<NUM>);
a first pipeline (<NUM>) connected to the transparent part (<NUM>);
a draining device (<NUM>) configured to drain the waste liquid (<NUM>) into the transparent part (<NUM>) via the first pipeline (<NUM>); a first container (A);
a second pipeline (<NUM>) provided on the other side of the transparent part (<NUM>) to the first pipeline (<NUM>); a second container (B);
an illumination device (<NUM>) for illuminating the transparent part (<NUM>);
an image acquiring device (<NUM>) configured to acquire light from the waste liquid (<NUM>) passing through the transparent part (<NUM>) and generate at least one image signal with respect to the transparent part (<NUM>);
a signal processing module (<NUM>) configured to receive the image signal and determining a quality of the waste liquid according to the image signal;
a flow rate measuring unit (300a) disposed adjacent to the transparent part (<NUM>) and configured to measure a flow rate of the waste liquid (<NUM>) passing through the second pipeline (<NUM>) and determine a volume of the waste liquid according to the flow rate of the waste liquid (<NUM>); and
a calculating unit (<NUM>) electrically coupled to the flow rate measuring unit (300a) and the signal processing module (<NUM>) to calculate a value of the waste liquid (<NUM>) according to the measured volume of the waste liquid (<NUM>) and the determined quality of the waste liquid (<NUM>);
whereby the flow rate measuring unit (300a) is outside an illuminating area of the illumination device (<NUM>), wherein the draining device (<NUM>) further includes a draining nozzle (<NUM>) inserted into the top of the first container (A), along a depth direction of the first container, into the waste liquid in the first container, and at a distance away from contacting the bottom surface of the first container, the first pipeline (<NUM>) is between the draining nozzle (<NUM>) and the transparent part (<NUM>) and configured to guide the waste liquid (<NUM>) from the draining nozzle (<NUM>) to the transparent part (<NUM>), the second pipeline (<NUM>) is between the transparent part (<NUM>) and the second container (B) and configured to guide the waste liquid (<NUM>) from the transparent part (<NUM>) to the second container (B).