baber/WOPTO huggingface dataset:
Patent WO-2019041458-A1 (WO)
Title: Intermittent fillet welding method
Inventor: WEI TAO
IPC: B23K37/00
Filed: 2017-10-13
Abstract: Provided is an intermittent fillet welding method. The method comprises: providing a first workpiece (1) and a second workpiece (2) to be fillet welded; machining and forming several grooves (3) at a welding end of the first workpiece along the lengthwise direction thereof at intervals, and thereby enabling the grooves to penetrate the first workpiece in the thickness direction of the first workpiece; and then all-round welding the welding end to the surface of the second workpiece so as to form several annular welding seams (4). According to the method, several grooves arranged at intervals are machined at the welding end of the first workpiece, and the welding end is then all-round welded at the surface of the second workpiece, and the formed welding seams extend from one side of the first workpiece to the other side of the first workpiece by passing through the grooves, forming an annular completely-surrounded structure, so that gaps between the welding seams and the two workpieces are completely sealed in the welding seams, thereby avoiding water accumulation at the gaps and corrosion and rust due to the influence of a humid environment; and grooves are formed at non-welded places, and paint may be completely sprayed for protection within the groove range, thereby avoiding the corrosion and rust at the grooves caused by accumulated water.
Patent WO-2019071584-A1 (WO)
Title: Method and device for proxy between different architectures
Inventor: YAO YIDONG
IPC: H04L29/06
Filed: 2017-10-13
Abstract: The present disclosure proposes a proxy method, comprising receiving a request for a service in a first architecture from a requester network function (NF) in a second architecture, obtaining a response of the service from a serving NF on behalf of the requester NF, and sending a further response to the requester NF based on the response of the service. The proxy method may be implemented on a NF or a function entity within a NF.
Patent WO-2018072730-A1 (WO)
Inventor: HUANG ZHEN
IPC: G05B17/02
Filed: 2017-10-19
Abstract: La présente invention se rapporte à un procédé et un appareil de commande de simulation de robot. Le procédé consiste : dans une région prédéfinie d'une interface de commande de fonctionnement de robot, à afficher une image stéréoscopique d'un robot virtuel correspondant à un robot réel (S101) ; à acquérir des paramètres de commande du robot (S102) ; à envoyer les paramètres de commande au robot virtuel, de telle sorte que ce robot virtuel se déplace selon les paramètres de commande (S103) ; dans la zone prédéfinie, à afficher une image stéréoscopique d'un processus de déplacement dudit robot virtuel (S104) ; selon les paramètres de commande, à assurer le rendu d'une trajectoire de déplacement du robot virtuel sur l'image stéréoscopique du processus de déplacement de ce robot virtuel (S105). Le procédé permet à un utilisateur d'observer de manière claire et intuitive l'état de déplacement d'un robot.
Patent WO-2019080094-A1 (WO)
Title: Signal measuring and selecting method and device, and computer storage medium
Inventor: SHI ZHIHUA
IPC: H04W16/28
Filed: 2017-10-27
Abstract: Disclosed in the present invention are a signal measuring and selecting method and device, and a computer storage medium, the method comprising: a terminal measures N downlink signals, N being a positive integer; the terminal determines a hypothetical physical downlink control channel BLER (PDCCH BLER) corresponding to at least one downlink signal among the N downlink signals, and identifies downlink signals for which the hypothetical PDCCH BLER does not satisfy requirements; and the terminal selects K downlink signals that satisfy a preset condition from among the N downlink signals on the basis of a measurement result for the N downlink signals and the identified downlink signals, K being a positive integer less than or equal to N.
Patent WO-2019037333-A1 (WO)
Title: Rapid fault recognition method based on curvature change of direct-current current waveform
Inventor: JIA KE
IPC: G01R31/08
Filed: 2017-12-08
Abstract: A rapid fault recognition method based on a curvature change of a direct-current current waveform, comprising: for a multi-end flexible direct-current power distribution system containing a power electronic converter, according to an electrical quantity characteristic in each phase after the occurrence of a direct-current bipolar short circuit fault, obtaining a mathematical expression of a fault current after the direct-current line fault (1); according to the obtained mathematical expression of the fault current, recognising a fault line utilising the difference in the change of the curvature of a current waveform after the fault by means of a curvature algorithm (2); and then according to the change conditions of a direct-current change rate di/dt, selecting a line switching on/off action, to realise fault protection of the line (3). In the method, based on a sudden change characteristic of a line current after a fault, the sudden change of the curvature of a current waveform is characterised by a curvature algorithm, achieving the aim of recognising an external fault, and improving the selectivity of protection for a sudden current change quantity.
Patent WO-2019113741-A1 (WO)
Inventor: XU BIN
IPC: G01F1/86
Filed: 2017-12-11
Abstract: 一种基于豁免级放射源的湿气流量测量装置，其特征在于，其包括一段圆柱形管道(1)以及位于其内并与其同轴设置的锥形节流件(2)，锥形节流件(2)包括共底面设置的头圆锥段(22)和尾圆锥段(23)，其中头圆锥段(22)迎着所述圆柱形管道(1)的湿气入口，圆柱形管道(1)的内壁与锥形节流件(2)的最大直径处(21)之间限定出一个环隙(3)以供湿气通过；在锥形节流件(2)的最大直径处(21)设置有豁免级放射源块(4)，其布置方式使得其放出的伽马射线能够沿径向穿透环隙(3)到达位于圆柱形管道(1)外部的伽马射线探测器(5)。能够使用豁免级放射源，这是多相流流量计量设备领域的革命性突破。
Patent WO-2018113578-A1 (WO)
Title: 基于服务器推荐的验票方案进行验票的方法、系统及设备
Inventor: CAO JIE
IPC: G06K17/00
Filed: 2017-12-14
Abstract: 一种基于服务器推荐的验票方案进行验票的方法、系统（200）及设备（300），方法包括：接收验票方案推荐请求（S110）；响应验票方案推荐请求，调取基于符合要求的验票方案推荐请求中携带的数据匹配的验票方案，并将验票方案推荐请求中携带的数据匹配至验票方案中（S120）；设置并保存数据匹配后的验票方案中用于验票的至少一种形式的密码数据（S130）。基于现有场馆的特性，在合理推荐验票方式的基础上依然保证验票的安全，提升验票效率，降低人员和设备投入和验票成本。
Patent WO-2019024388-A1 (WO)
Title: Purification and decontamination spray head and clothing care machine
Inventor: ZHAO YI
IPC: D06F35/00
Filed: 2017-12-17
Abstract: A purification and decontamination spray head and a clothing care machine using same. The purification and decontamination spray head comprises a spray head shell (100), a water spray device (200) for spraying water to clothing to be processed, and an ultrasonic wave generating device (300) for emitting ultrasonic waves to the clothing to be processed; the spray head shell (100) is provided with a first accommodating cavity (110) for providing the water spray device (200), and a second accommodating cavity (120) for providing the ultrasonic wave generating device (300); a position on the spray head shell (100) corresponding to the first accommodating cavity (110) is provided with a water outlet (131); the water spray device (200) is connected to the water outlet (131). According to the purification and decontamination spray head, the water spray device (200) sprays water mist on the clothing to be processed, then the ultrasonic waves generated by the ultrasonic wave generating device (300) act on water, and an instantaneous high pressure generated from the action of the ultrasonic waves on water achieves stain cleaning. The clothing care machine using the purification and decontamination spray head can decompose and remove the dust attached on clothing more effectively, and can improve the cleanness and use comfortableness of the clothing.
Patent WO-2018121319-A1 (WO)
Title: 一种区块数据校验方法和装置
Inventor: QIU HONGLIN
IPC: G06Q20/38
Filed: 2017-12-18
Abstract: 一种区块数据校验方法及装置，包括：从包含多个数据节点的区块中选择用于存储新增数据的数据节点（S110）；针对所述数据节点，确定所述新增数据的校验值（S120），并根据所述新增数据的校验值，计算所述数据节点的更新校验值（S130）；根据所述数据节点的更新校验值与所述区块中包含的其他数据节点的原始校验值，得到所述区块的校验值（S140）；其中，所述区块的校验值用于校验所述区块中存储的数据是否与区块链中其他区块中存储的数据一致。利用新增数据确定用于存储该新增数据的数据节点的更新校验值，避免了现有技术中当区块中新增数据时利用区块中所有数据计算校验值所导致的时间消耗较长的问题，有效缩短了校验值的计算时间，从而提高了区块数据校验的效率。
Patent WO-2019015245-A1 (WO)
Title: Connector
Inventor: HE JINFENG
IPC: H05K5/02
Filed: 2017-12-18
Abstract: Provided is a connector for connecting an LED display screen box body (300) and a back frame (100). The connector comprises a back frame fastener (200) for fixed connection with the back frame (100), a box body fastener (400) for fixed connection with the LED display screen box body (300), and a connecting member (500) for connecting the back frame fastener (200) and the box body fastener (400). The connecting member (500) comprises a sleeve (520) and an insert member (540). One end of the sleeve (520) is fixedly connected to the box body fastener (400), and the other end is provided with a accommodating cavity for accommodating the insert member (540). The inner wall of the accommodating cavity is provided with a sliding groove (522), and the extending direction of the sliding groove (522) is perpendicular to the axial direction of the sleeve (520). One end of the insert member (540) is fixedly connected with the back frame fastener (200), and the other end is provided with a bead bolt (542). When the insert member (540) is inserted into the sleeve (520), the bead (545) of the bead bolt (542) is snapped into the sliding groove (522). The connector has a simple structure and low cost, and can effectively realize a fixed connection between the LED display screen box body (300) and the back frame (100).
Patent WO-2019119426-A1 (WO)
Inventor: ZHOU ZHENHAO
IPC: H04N13/218
Filed: 2017-12-22
Abstract: 本发明提供一种基于无人机的立体成像方法和装置，所述方法包括：通过无人机从不同的位置获取目标物体的至少两幅目标图像，其中，至少两幅所述目标图像中的所述目标物体至少部分重合；根据至少两幅所述目标图像，生成所述目标物体的立体图像。通过无人机来替换双目摄像机中的两个摄像机，从不同的位置获取目标物体的至少两幅目标图像，从而获得目标物体的立体图像，采用低成本的方式增大了相采集点之间的距离，降低了对成像解析度的需求，并提高了三维重建精度。
Patent WO-2018127075-A1 (WO)
Title: Appareil et procédés de décodage de construction de code polaire basé sur un élément binaire auxiliaire
Inventor: GE YIQUN
IPC: H04L1/00
Filed: 2018-01-04
Abstract: La présente invention concerne un sous-canal auxiliaire de transport d'un élément binaire auxiliaire de décodage, dans des éléments binaires d'entrée qui doivent être codés, qui est sélectionné à partir de chacun d'une pluralité de segments non adjacents. Chaque segment comprend un sous-ensemble de sous-canaux avec des fiabilités associées. Certains modes de réalisation impliquent également le regroupement des sous-canaux en segments. Après sélection d'un nombre cible de sous-canaux auxiliaires, les éléments binaires d'entrée sont codés afin de générer un mot codé, et le mot codé est transmis. Une sélection de sous-canal auxiliaire pourrait impliquer des itérations afin de sélectionner des sous-canaux auxiliaires à chaque itération, jusqu'à ce qu'au moins le nombre cible de sous-canaux auxiliaires ait été sélectionné.
Patent WO-2019136757-A1 (WO)
Title: Pressing detection method and apparatus for fingerprint recognition system, and terminal device
Inventor: WANG QIJI
IPC: G06K9/00
Filed: 2018-01-15
Abstract: A pressing detection method and apparatus for a fingerprint recognition system, and a terminal device. The fingerprint recognition system comprises a screen and a fingerprint apparatus. A sensing area of the fingerprint apparatus is at least partially positioned in a display area of the screen. The method comprises: obtaining a pressing area of a fingerprint pressing operation on the screen (210); determining an overlapping proportion of the pressing area of the fingerprint pressing operation and the sensing area of the fingerprint apparatus (220); and determining the validity of the fingerprint pressing operation according to the overlapping proportion, the validity of the fingerprint pressing operation comprising valid fingerprint pressing or invalid fingerprint pressing (230). By means of the method, the invalid fingerprint pressing caused by incomplete pressing in the use process of a user can be filtered in advance, so that the problems that a fingerprint template collected by the fingerprint recognition system is incomplete or fingerprint recognition fails due to incomplete pressing can be avoided.
Patent WO-2019144421-A1 (WO)
Inventor: DONG MINGZHU
IPC: F25B47/02
Filed: 2018-01-31
Abstract: 一种热泵空调系统和控制方法，热泵空调系统包括：压缩机(1)；内机换热器(2)、外机换热器(3)和节流装置(4)；冷媒循环回路，将压缩机(1)、内机换热器(2)、外机换热器(3)和节流装置(4)进行串联连接；蓄热模块(5)，设置在冷媒循环回路中，以在需要蓄热时从冷媒循环回路中的冷媒吸热以储蓄热量，在需要对外机换热器(3)化霜时通过蓄热模块(5)对冷媒循环回路中的冷媒进行加热。该热泵空调系统能够在室内热负荷低的时候蓄集系统多余的热量用于化霜，在除霜过程中通过蓄热模块放出热量以进行化霜、此时仍能继续对室内供热，保证房间温度维持不变，提高房间舒适性。
Patent WO-2019148383-A1 (WO)
Title: Voice-controlled inflatable bed
Inventor: HUANG SHUIYONG
IPC: A47C27/08
Filed: 2018-01-31
Abstract: A voice-controlled inflatable bed (10, 310, 510, 610) includes a main body (11, 311, 514, 611) and an air pump (12, 312, 512, 612). The air pump (12, 312, 512, 612) is configured to inflate and deflate the main body (11, 311, 514, 611) and includes a main pump (32, 332), a pressure sensor (60, 360), an inflation/deflation port (38, 338), and a microphone (62, 362). The air pump (12, 312, 512, 612) inflates and deflates the main body (11, 311, 514, 611) based on voice commands from a user. Additionally, the voice-controlled inflatable bed (10, 310, 510, 610) may include a wireless module that allows the user to speak into a remote device (614, 616) to control the air pump (12, 312, 512, 612).
Patent WO-2018149323-A1 (WO)
Title: 拍摄方向偏移检测方法、装置、设备及存储介质
Inventor: WANG DAFENG
IPC: G07C5/08
Filed: 2018-02-06
Abstract: 一种拍摄方向偏移检测方法、装置、设备及存储介质。方法包括：获取图像采集设备在预定时间段内的各个时间点上的水平加速度（201）；根据各个时间点上的水平加速度，确定图像采集设备的目标拍摄方向；当目标拍摄方向与图像采集设备在预定时间段的结束时间点上的实际拍摄方向之间的夹角满足预设条件时，确定图像采集设备的实际拍摄方向发生偏移（207），在此过程中，不需要用户人工检查图像采集设备的拍摄方向，提高了检测图像采集设备的拍摄方向发生偏移的及时性和准确性。
Patent WO-2018177145-A1 (WO)
Inventor: HU LUHUI
IPC: G06F17/30
Filed: 2018-03-16
Abstract: An apparatus and method are provided for a managed knowledge network platform (KNP). Model dissimilarity values for model pairs are obtained, each model pair including a first model of a plurality of models in a KNP and a different model in the plurality of models. Path lengths between a first model node of a plurality of model nodes in the KNP and each one of other model nodes are computed, where the first model node represents the first model and the first model node is connected to a first user node of a plurality of user nodes representing users of the KNP. At least one of the different models is selected based on the model dissimilarity values and the path lengths. A recommendation that includes the at least one model is generated for a first user represented by the first user node.
Patent WO-2019136831-A1 (WO)
Title: Wavelength conversion apparatus and light source therefor
Inventor: LI QIAN
IPC: F21V9/40
Filed: 2018-03-28
Abstract: Disclosed are a wavelength conversion apparatus and a light source therefor. The wavelength conversion apparatus comprises: a substrate (110); and a fluorescent ceramic layer (220), the fluorescent ceramic layer being used for absorbing excitation light and emitting excited light with a wavelength different from that of the excitation light, wherein an inorganic diffuse reflection layer (210) and an adhesive layer (500) are stacked between the substrate and the fluorescent ceramic layer, and the inorganic diffuse reflection layer is used for reflecting the excited light and an unconverted part of the excitation light. The present invention effectively improves the effect of heat dissipation of the wavelength conversion apparatus by providing the fluorescent ceramic layer and a heat dissipation fin, and ensures close joining of a plurality of components by means of the adhesive layer, and the arrangement of the ceramic substrate reduces a stress pull-crack phenomenon caused by the difference in coefficients of thermal expansion, thereby improving the reliability and service life of the wavelength conversion apparatus.
Patent WO-2018188568-A1 (WO)
Title: 动态网络衡算的深度支付分账方法及系统
Inventor: CHEN YU
IPC: G06Q20/10
Filed: 2018-04-10
Abstract: 一种动态网络衡算的深度支付分账方法及系统，该方法包括：确定一资金流入的节点作为主节点，汇总一定时间窗口内以所述主节点为总支付源的动态资金流关系，根据汇总的主节点及各级次节点间的资金流关系，生成一预设支付深度下的支付网络（S1）；以各节点的资金流入流出平衡为条件，对支付网络中的具有多级链路或具有重复链路的资金流进行间隔节点直连、相邻节点剪枝处理，以缩短主节点与后级次节点之间的支付路径（S2）；根据主节点及各级次节点间的新资金流关系，生成新支付网络（S3）；按照新支付网络中的资金流路径，进行主节点到后级次节点的分账支付（S4）。所述方法提高了资金支付效率，减少了资金流转环节，降低了支付过程中的费用。
Patent WO-2019047522-A1 (WO)
Title: Plate glass convection heating method
Inventor: ZHAO YAN
IPC: C03B27/012
Filed: 2018-04-11
Abstract: A plate glass convection heating method. In a convection heating process, plate glass alternates between two end points of a motion path on a roller bed in a heating furnace. In an alternation cycle, the process by which the glass plate decelerates in a direction approaching the two end points until becoming stationary and then accelerates in a direction away from the two end points is defined as a reversing process of the plate glass, and movement processes of the plate glass on the roller bed other than the reversing process are defined as operational processes of the plate glass. During the operational processes of the plate glass, a high temperature fan operates at a set rotational speed, and the rotational speed of the high temperature fan is decreased during the operational processes and/or during the reversing process of the plate glass, such that when the plate glass rests at the end of the motion path, the rotational speed of the high temperature fan is less than an average rotational speed of the high temperature fan during the operational processes of the plate glass.
Patent WO-2019080465-A1 (WO)
Title: Method and apparatus for controlling alarm
Inventor: XIE YAN
IPC: H04M1/72448
Filed: 2018-04-20
Abstract: Disclosed are a method and an apparatus for controlling an alarm, used for flexibly controlling an alarm. The method comprises: determining the time point of an alarm of a first terminal device; when the duration from said time point is a preset duration, determining whether there is at least one second terminal device in the same scene as the first terminal device; if there is at least one second terminal device, then acquiring the sleep information of at least one corresponding user from at least one smart wearable device correspondingly associated with the at least one second terminal device; and, on the basis of the sleep information of the at least one user, controlling the alarm of the first terminal device and the operating state of a second smart wearable device associated with the first terminal device. The present technical solution can flexibly control an alarm.
Patent WO-2018214778-A1 (WO)
Inventor: SHEN HUI
IPC: G06F3/01
Filed: 2018-05-15
Abstract: 本申请公开一种虚拟对象的展示方法及装置，用于在将虚拟对象叠加展示在当前图像的目标对象位置上时，减小位置误差。所述方法包括：根据采集当前图像时终端的位置信息，获取包含候选目标对象的图像；将所述当前图像与所述包含候选目标对象的图像进行图像匹配，确定至少一个目标对象投影在所述当前图像中的实际位置；根据所述至少一个目标对象投影在所述当前图像中的理论位置和实际位置，确定修正后姿态信息；根据采集当前图像时终端的位置信息、目标对象的位置信息、以及所述修正姿态信息，将目标对象对应的虚拟对象展示在所述当前图像中。
Patent WO-2018210289-A1 (WO)
Title: 自动售货机出货机构
Inventor: DENG LAIMING
IPC: G07F11/00
Filed: 2018-05-17
Abstract: 一种自动售货机出货机构，用于安装于内设多排货柜的自动售货机，包括：出货板（101、201）、传动杆（102、202）、传动电机（103、203）及移动杆（104、204）；传动电机（103、203）包括：传动端（1031、2031）与固定端（1032、2032）；传动端（1031、2031）与固定端（1032、2032）活塞连接；传动端（1031、2031）与移动杆（104、204）连接；传动杆（102、202）的一端与传动端（1031、2031）转动连接；出货板（101、201）为铲状；传动杆（102、202）的另一端与出货板（101、201）的一侧面转动连接。出货机构能够避免商品从自动售货机货架上掉落，从而保持商品的完整性，并且可以同时输出多个物品
Patent WO-2019047561-A1 (WO)
Title: Distributed coordination and control system for thermoelectric generating set based on multi-parameter dynamic matrix control
Inventor: LV JIANHONG
IPC: G05B19/418
Filed: 2018-05-24
Abstract: A distributed coordination and control system for a thermoelectric generating set based on multi-parameter dynamic matrix prediction and control. The control system consists of a load control loop, a main steam pressure control loop and a separator temperature control loop; deviations of a load, a main steam pressure and a separator temperature from set values are sent to a prediction controller based on a dynamic matrix control algorithm; and calculations are made to obtain an optimized value of the openness of a steam turbine governing valve, of a coal feed quantity and of a feed water flux, thereby ensuring the tracking performance of the set for a load instruction and the security performance of the operation of the set. By means of dynamic matrix control, the optimization problem of a multi-variable system can be conveniently processed; and the calculation process is clear and simple, and upon application of the program, the programming implementation is convenient. Since a corresponding control quantity is regulated in a timely manner by predicting a future output deviation, a real power can rapidly follow a load instruction, and the stability of a main steam pressure and a separator temperature can also be ensured. The set has a good reliability, and the control effect is better than traditional PID control.
Patent WO-2018214942-A1 (WO)
Inventor: HE JIAPING
IPC: C12M1/00
Filed: 2018-05-24
Abstract: 提供了一种冻存细胞试剂盒，所述的试剂盒包括：生理盐水容器，所述的生理盐水容器用于存放生理盐水；细胞冻存容器，所述的细胞冻存容器用于存放冻存细胞制剂；无菌连接器，所述的一次性无菌连接器包括一导管部分，和分别连接于导管部分两头的第一穿刺装置和第二穿刺装置。
Patent WO-2019237419-A1 (WO)
Inventor: HU YAJUN
IPC: B30B15/34
Filed: 2018-06-22
Abstract: 本发明提供一种催化剂粉末与网片压制的设备，包括机架；网片料架；粉末容器；粉末分隔送料机构；用于将催化剂粉末与金属卷网片进行高温压制形成催化剂片的粉末与网片压制机构；粉末与网片压制机构包括用于传送金属卷网片并将催化剂粉末压制于金属卷网片上的两条可发热的轧辊；网片料架上金属卷网片的初始端位于两条轧辊之间；粉末分隔送料机构的出料位位于两条轧辊之间的上方。本发明还提供一种催化剂粉末与网片压制方法，该设备和方法可实现催化剂粉末高温压制于网片上形成催化剂片，使得催化剂粉末牢固附属于网片载体上，可解决催化剂粉末在反应过程中容易脱落的问题，从而提高催化剂片实现气体生成或合成的质量和效率。
Patent WO-2019218424-A1 (WO)
Title: Aroma diffuser
Inventor: ZHANG XUERAN
IPC: A61L9/14
Filed: 2018-06-25
Abstract: An aroma diffuser (100), comprising a housing (1000) internally provided with an aroma diffusing device (2000). The aroma diffusing device (2000) comprises a first guide tube (2100), a second guide tube (2200), a container (2300), and an air intake device (2400). An opening at a top portion of the container (2300) is connected to a plug (2310) in a sealed manner. An adapter (2320) is provided above the plug (2310). The adapter (2320) is provided with a first circulation hole (2322) and a second circulation hole (2324), wherein the first circulation hole (2322) and the second circulation hole (2324) do not intersect, and are both in communication with the interior of the container (2300). An air discharge opening of the air intake device (2400) and the first circulation hole (2322) communicate via the first guide tube (2100), and are respectively connected to two ends of the first tube (2100) in a sealed manner. The second circulation hole (2324) communicates with the second guide tube (2200), and an evaporated essential oil is directed out of the container (2300) via the second guide tube (2200). The aroma diffuser is convenient to operate and easy to control.
Patent WO-2019114245-A1 (WO)
Inventor: HUANG JIN
IPC: G01D21/02
Filed: 2018-06-26
Abstract: Disclosed is a power-off method for smart appliances. The power-off method for smart appliances comprises: a first household collects a first ambient parameter of the environment where the first household is located; detect whether the first ambient parameter is abnormal; control a smart meter to power off when detecting that the first ambient parameter is abnormal. Also disclosed are a power-off device and system for smart appliances, and a computer-readable storage medium.