baber/WOPTO huggingface dataset:
Patent WO-2018166298-A1 (WO)
Title: Immunopotentialisateur, composition pharmaceutique immunothérapique et sa préparation et utilisation
Inventor: WANG BIN
IPC: A61K39/39
Filed: 2018-01-24
Abstract: La présente invention concerne un amplificateur immunitaire comprenant au moins un interféron et un facteur stimulant les colonies de granulocytes-macrophages, et une composition pharmaceutique immunothérapique comprenant au moins un antigène et les amplificateurs immunitaires précités. La présente invention concerne en outre un procédé de préparation de la composition pharmaceutique immunothérapique, et l'utilisation de l'amplificateur immunitaire et de la composition pharmaceutique immunothérapique. L'amplificateur immunitaire peut être appliqué aux traitements des maladies et tumeurs provoquées par des virus, des bactéries et autres micro-organismes.
Patent WO-2018161778-A1 (WO)
Title: 终端
Inventor: ZHANG HAIPING
IPC: G06F1/16
Filed: 2018-02-09
Abstract: 一种终端（100），该终端（100）包括：印刷电路板、显示屏（20）、及至少两个功能组件（60），该印刷电路板电连接至该显示屏（20），该显示屏（20）包括：显示区域，用于显示信息；功能区域，用于安装该至少两个功能组件（60），该功能区域与该显示区域相邻设置。有效增大了显示区域的面积，进而实现大屏幕画面的显示效果。
Patent WO-2018166405-A1 (WO)
Title: 电梯门锁装置
Inventor: HUO JUNCHAO
IPC: B66B13/18
Filed: 2018-03-09
Abstract: 一种电梯门锁装置，包括：左系合杆（100）、右系合杆（200）、轿门锁组件（300）、层门锁组件（400）和底座（500）。左系合杆（100）、右系合杆（200）和轿门锁组件（300）均与底座（500）可转动地连接；层门锁组件（400）安装在层门上，层门锁组件（400）包括滚轮组件（410）；右系合杆（200）在皮带（800）的带动下能够相对于底座（500）在第一位置和第二位置之间往复转动，右系合杆（200）由第一位置向第二位置运动的过程中，右系合杆（200）推动滚轮组件（410），使层门锁组件（400）解锁，同时滚轮组件（410）推动左系合杆（100），使轿门锁组件（300）解锁。该电梯门的开启方式是依次解锁层门锁和轿门锁，最终使轿门和层门联动开启，避免了轿门在开门过程中轿门锁卡死的情况，提高了电梯运行的可靠性和美观感。
Patent WO-2019085394-A1 (WO)
Inventor: TONG XIAOYONG
IPC: G06Q30/00
Filed: 2018-04-09
Abstract: 本申请适用于信息识别领域，提供了一种礼品赠送方案的确定方法及其终端，包括：获取客户的保单购买信息；根据预设的礼品匹配参数提取算法，提取保单购买信息包含的营销活动匹配维度以及产品特征匹配维度；根据营销活动匹配维度，确定客户对应的营销活动；从营销活动对应的礼品赠送方案中，选取产品特征匹配维度对应的礼品赠送方案；将选取的礼品赠送方案识别为客户的候选礼品赠送方案。本申请实施例通过获取客户已购买保单的保单购买信息，根据该保单购买信息确定营销活动匹配维度以及产品特征匹配维度，挑选出客户的候选礼品赠送方案，解决了现有的礼品赠送方案的选取过程，选取的准确率较低，并且容易发生违规赠送的情况的问题。
Patent WO-2018233367-A1 (WO)
Title: Case registration method and apparatus, terminal, and computer readable storage medium
Inventor: ZHAO LIANG
IPC: G06Q40/08
Filed: 2018-04-19
Abstract: Disclosed in the present application is a case registration method. The method comprises: displaying, when a case import request is received, a report entry in a preset interface of a claim system; importing batch cases from the report entry; extracting a corresponding data field from each imported case, and comparing each extracted data field with a pre-stored mapping table to determine a verification rule corresponding to each data field; and reviewing each corresponding case by using each verification rule, and generating, when the verification succeeds, a claim scheme on the basis of the amount of compensation corresponding to the case. Also disclosed in the present application are a case registration apparatus, a terminal, and a computer readable storage medium. The present invention improves the efficiency and intelligence of claim case registration, and saves manpower.
Patent WO-2019213856-A1 (WO)
Title: Method and apparatus for configuring drb integrity protection, and computer storage medium
Inventor: YANG NING
IPC: H04W76/00
Filed: 2018-05-09
Abstract: Disclosed is a method and an apparatus for configuring DRB integrity protection, and a computer storage medium. The method comprises: a base station acquiring security policy information and priority information of a PDU session configured by a network element of a first core network, the security policy information comprising an indication parameter of a DRB IP corresponding to the PDU session, the priority information being used to indicate a priority of the DRB IP corresponding to the PDU session; the base station acquiring first UE capability information of a terminal, the first UE capability information comprising an aggregated data rate capability threshold value regarding the DRB IP requested by the terminal; and the base station determining, according to the first UE capability information, the security policy information and priority information of each PDU session corresponding to the terminal, whether to configure a DRB IP function.
Patent WO-2019071950-A1 (WO)
Title: Device for automatically removing surface residual liquid
Inventor: YAN BIZHU
IPC: F26B21/00
Filed: 2018-05-13
Abstract: A device for automatically removing surface residual liquid, comprising a base (1), a cleaning box (7), a casing (8), a liquid mixing box (14) and a condensation box (24); the base (1) is mounted at a top portion of the casing (8), and the cleaning box (7) is mounted at a side at the interior of the casing (8), the condensation box (24) being mounted at the other side at the interior of the casing (8); a water box (26) is mounted at a bottom end at the interior of the condensation box (24), and a water pump (27) is mounted at a bottom portion of a side of the water box (26) that is far from the cleaning box (7), while a water outlet pipe (18) is mounted at an output end of the water pump (27), the water outlet pipe (18) passing through the water box (26) and the cleaning box (7) and extending into the interior of the cleaning box (7). A support plate (9) is hinged to the liquid mixing box(14), and a cleaning agent and water may be uniformly mixed by means of shaking the liquid mixing box (14), a spiral pipe (16) being mounted within the liquid mixing box (14).
Patent WO-2019178942-A1 (WO)
Title: 一种进行ssl握手的方法和系统
Inventor: LIN JINPENG
IPC: H04L29/06
Filed: 2018-05-28
Abstract: 本申请公开了一种进行SSL握手的方法和系统，属于无线通信技术领域。所述方法包括：在与目标终端进行SSL握手的过程中，目标CDN节点确定所述目标终端访问的目标业务服务器，并获取需要私钥处理的待处理信息；所述目标CDN节点向所述目标业务服务器对应的私钥服务器发送私钥处理请求，所述私钥处理请求携带有所述待处理信息和目标私钥处理类型信息；所述私钥服务器基于所述目标私钥处理类型信息和所述目标业务服务器的私钥处理所述待处理信息，并将处理结果发送给所述目标CDN节点，以使所述目标CDN节点根据所述处理结果与所述目标终端继续进行SSL握手。采用本申请，可以保证私钥的安全性，以及业务服务和CDN服务的服务质量。
Patent WO-2019029266-A1 (WO)
Title: Body movement recognition method, robot and storage medium
Inventor: YUAN HUI
IPC: G06K9/00
Filed: 2018-06-15
Abstract: Disclosed in the invention are a body movement recognition method, a robot and a storage medium. The method comprises the following steps: extracting body movement information in a to-be-processed video, wherein the body movement information comprises color change information, body movement change information and movement degree information; according to the color change information and the body movement change information, determining corresponding part feature information; combining the part feature information with the movement degree information to generate a body movement tag; comparing the body movement tag with the body movement tag in a preset body movement database; and determining the body movement in the to-be-processed video according to the comparison result so as to realize body movement recognition.
Patent WO-2020000148-A1 (WO)
Inventor: MU QIN
IPC: H04W48/16
Filed: 2018-06-25
Abstract: The present disclosure relates to a method and a device for accessing a machine type communication (MTC) system, and a storage medium. Said method comprises: in the process of accessing an MTC system, after receiving an MIB, acquiring deployment mode information in the MIB, the deployment mode information being used for indicating whether the MTC system is deployed independently or deployed on the basis of a first communication system; and if the deployment mode information indicates that the MTC system is deployed independently, abandoning the execution of a specified action, the specified action comprising an action required to be executed after receiving the MIB in the process of accessing the first communication system. According to the technical solutions provided in the present disclosure, after the MIB is received, if it is determined, according to the deployment mode information in the MIB, that the MTC system is deployed independently, the execution of a subsequent action is abandoned, being able to avoid unnecessary power consumption caused by continuing to attempt to receive subsequent information after user equipment using the first communication system accesses an MTC system independently deployed.
Patent WO-2019019920-A1 (WO)
Title: Hybrid memristor/field-effect transistor memory cell and its information encoding scheme
Inventor: CHENG KWANG TING
IPC: G11C11/00
Filed: 2018-07-11
Abstract: A resistive random-access memory (ReRAM) includes a hybrid memory cell. The hybrid memory cell includes: (a) a left resistance-switching device comprising a first terminal and a second terminal, (b) a right resistance-switching device comprising a first terminal and a second terminal, wherein the first terminal of the right resistance-switching device is connected to the first terminal of the left-resistive switching device at an internal node, and (c) a transistor comprising a source terminal, a drain terminal, and a gate terminal, wherein the drain terminal of the transistor is connected to the left resistance-switching device and the right resistance-switching device at the internal node.
Patent WO-2020024140-A1 (WO)
Title: Control method, device and system
Inventor: GASSNER CHRISTIAN
IPC: H04Q9/00
Filed: 2018-08-01
Abstract: A control method, the method comprising: establishing a connection relationship between a control device and multiple controlled objects, acquiring an input operation that acts on an object selection component, and determining one or more groups of controlled objects according to the input operation; detecting a control operation that acts on a work control component, and generating a control instruction corresponding to a control function according to the control operation; adjusting the working status of the controlled objects according to the control instruction. Further comprised are a device and system for the described method. By means of the described method, multiple controlled objects may be controlled by means of one control device to operate separately and/or synchronously, thus saving costs on control devices when there are many controlled objects, and increasing the control efficiency of operators to improve operating experience.
Patent WO-2020029259-A1 (WO)
Title: Mapping method and apparatus for control channel resource
Inventor: JI PENGYU
IPC: H04W72/04
Filed: 2018-08-10
Abstract: A mapping method and apparatus for a control channel resource. The method comprises: a sending device determines a time-domain resource candidate set from a control channel resource pool, the number of symbols comprised in each candidate time-domain resource in the time-domain resource candidate set being less than or equal to the number of symbols comprised in a time slot or a sub-frame; the sending device selects, in the time-domain resource candidate set, a control channel time-domain resource for transmitting control information. Hence, a time-domain resource that can support scheduling data is in a non-slot case; moreover, the complexity of detecting a control channel by a receiving device is not high.
Patent WO-2020029314-A1 (WO)
Title: Brewing method for radix notoginseng red rice yeast vinegar
Inventor: LIANG XIAOYING
IPC: C12N1/20
Filed: 2018-08-16
Abstract: Disclosed is a brewing method for radix notoginseng red rice yeast vinegar. A herbal medicine ferment prepared with radix notoginseng as a main raw material is fermented together with the red rice yeast and agaricus bisporus pulp to prepare the brewed vinegar. The herbal medicine ferment is used as a saccharification fermentation agent, and after a long-time brewing process, some red rice yeast is added, wherein the red rice yeast pigment and the red rice yeast polysaccharide can be more sufficiently dissolved in the alcohol and vinegar liquid. The brewed radix notoginseng red rice yeast vinegar product combines the medical efficacies of both radix notoginseng and red rice yeast, has, if being drunk for a long time, significant curative effect for cardiovascular and cerebrovascular diseases. In addition to flavoring, nutritional and healthcare functions of ordinary table vinegars, the radix notoginseng red rice yeast vinegar further has significant auxiliary treatment effect for cardiovascular and cerebrovascular diseases, and compared with traditional Chinese medicine and western medicine special for the treatment of cardiovascular and cerebrovascular diseases, has no toxicity and side effect, and causes no dependence.
Patent WO-2020034168-A1 (WO)
Title: Porous lithium ion battery separator film employing cross-linked polymer and linear polymer, preparation method and application thereof
Inventor: ZHANG MINGZU
IPC: H01M10/0525
Filed: 2018-08-16
Abstract: The invention discloses a porous lithium ion battery separator film employing a cross-linked polymer and a linear polymer, a preparation method and an application thereof. The specific preparation method is: uniformly mixing polyvinylidene fluoride-hexafluoropropylene, (methyl)acrylate monomers, an octavinyl polyhedral oligomeric silsesquioxane cross-linking agent and a nano-oxidant in a suitable solvent; and forming a gel polymer film having a cross-linked structure via radical polymerization. After pore formation by nano-zinc oxide, ionic conductivity of the gel polymer film at 25℃ reaches 1.4×10  -3  S/cm, the tensile strength thereof reaches 16 MPa, and the gel polymer film has excellent dimensional stability. The lithium ion battery separator film obtained by the invention can greatly improve ionic conductivity, demonstrates significant improvement in high-rate charging/discharging performance, and has good application potential.
Patent WO-2019091229-A1 (WO)
Title: 一种内置驱动液压平衡型的双层喷嘴双排管气波制冷机
Inventor: HU DAPENG
IPC: F25B9/00
Filed: 2018-09-20
Abstract: 一种内置驱动液压平衡型的双层喷嘴双排管气波制冷机，通过在气波机主轴（22）上安装特制的双层喷嘴（19）以向对应的双排振荡接受管（28）中射气完成制冷，可达到接受管数成倍增加，处理量增大和效率提高之目的，通过建立液压平衡装置以抵消、克服和平衡由轴向进气而引发的轴向力大增的不利，可有效解决这一导致机器寿命缩短的难题；在本机中段嵌入式内置了传动装置并由电机（45）驱动，很好解决了机器两端被占用的矛盾；为防止制冷前后的气体掺混及外泄，提高制冷效率，本机除了使用了迷宫密封、螺旋密封之外，还采用了多个单端面机械密封，机械密封能够比较好的适应气波制冷机的生产工况，可以保证设备长寿命且稳定安全地运转。
Patent WO-2019200844-A1 (WO)
Title: Omnidirectional antenna and drone monitoring device
Inventor: TANG YIJUN
IPC: H01Q1/36
Filed: 2018-09-28
Abstract: An omnidirectional antenna and a drone monitoring device. The omnidirectional antenna comprises: a plurality of directional antennas; and a connection device for connecting the plurality of directional antennas to an external fixing structure. The connection device comprises: a holding assembly (10) connected to the external fixing structure, wherein the holding assembly (10) is provided with a holding portion (11) matching the external fixing structure; an annular frame (20) located outside the holding assembly (10) and fixedly connected to the holding assembly (10); and a plurality of mounting assemblies (30) corresponding to the plurality of directional antennas in number, wherein the plurality of mounting assemblies (30) are circumferentially and evenly distributed on an outer circumferential surface of the annular frame (20) and are respectively and correspondingly connected to the plurality of omnidirectional antennas. The plurality of mounting assemblies are circumferentially and evenly distributed on the annular frame such that the plurality of directional antennas are also distributed circumferentially and evenly, thereby realizing a high-gain omnidirectional antenna having good omnidirectional radiation and signal receiving capabilities and anti-interference performance in all directions on a horizontal plane.
Patent WO-2019091297-A1 (WO)
Title: 一种磁悬浮轴承供电系统及其控制方法
Inventor: GUO WEILIN
IPC: F16C32/04
Filed: 2018-10-29
Abstract: 一种磁悬浮轴承供电系统及其控制方法，该系统包括：整流滤波电路（1），对交流输入电源进行整流滤波处理，得到第一直流母线电压后分为两路，其中一路第一直流母线电压为所述磁悬浮轴承（3）所属电机（6）的电机控制器（5）供电；取电电路（9），自另一路第一直流母线电压处取电，得到第二直流母线电压；第二直流母线电压，在所述DC-DC电源（2）允许的输入电压范围内；DC-DC电源（2），将所述第二直流母线电压转换为第三直流母线电压，并供电至所述磁悬浮轴承（3）的轴承控制器（4），该磁悬浮轴承供电系统及其控制方法可以克服现有技术中供电稳定性差、结构复杂和可靠性差等缺陷。
Patent WO-2019096010-A1 (WO)
Title: 一种通道校准的方法及装置
Inventor: JIANG CHENGYU
IPC: H04B17/00
Filed: 2018-10-31
Abstract: 本发明公开了一种通道校准的方法及装置，应用于多通道的RRU，所述多通道包括待校准通道和参考通道，方法包括：获取所述待校准通道的校准序列，以及所述参考通道的校准序列；利用所述参考通道的校准序列与所述待校准通道的校准序列间的频域响应计算所述待校准通道的校准滤波器系数；利用所述校准滤波器系数，获得所述校准滤波器的时延补偿值；利用所述待校准通道的校准序列自相关性，获得所述待校准通道的第一时延值，以及，利用所述参考通道的校准序列的自相关性，获得所述参考通道的第二时延值；基于所述校准滤波器的时延补偿值，所述第一时延值，和所述第二时延值，获得所述待校准通道与所述参考通道间的时延差，对所述待校准通道进行时延补偿。
Patent WO-2019105179-A1 (WO)
Inventor: WANG LI
IPC: H04N19/186
Filed: 2018-11-02
Abstract: 本公开是关于一种颜色分量的帧内预测方法及装置，属于视频编解码领域。所述方法包括：通过第一通道向卷积神经网络输入第一输入数据，所述第一输入数据包含待处理图像帧中目标区域的第一颜色分量的信息；获取所述卷积神经网络输出的第一输出数据，所述第一输出数据包含所述卷积神经网络对所述目标区域的第二颜色分量的信息的预测值；其中，所述第一颜色分量和所述第二颜色分量为所述目标区域具有的不同的颜色分量。本公开解决了相关的帧内预测技术预测的预测结果可靠性较低的问题。
Patent WO-2019114468-A1 (WO)
Title: 铸造装置及其铸造方法
Inventor: LI JINMIN
IPC: B22D13/00
Filed: 2018-11-08
Abstract: 本发明提出了铸造装置及其铸造方法，该铸造装置包括离心下模、离心上模、砂型、顶模装置及离心机，离心下模的顶端形成收容腔，离心下模于收容腔的外侧可活动地穿设有导杆，离心上模设有收容砂型的型腔，砂型为环形，其底面向内凹进形成与铸件相对应的铸腔，砂型的内表面于其底端形成与铸腔连通的补缩浇道，顶模装置包括设于收容腔内的起模板、连接起模板下的顶轴、设于离心下模下方的顶模板及设于顶模板下方的驱动设备，导杆的两端分别固定于离心上模及顶模板上，离心转速为200-600rpm，该铸造方法包括顶模装置伸出、顶模装置回缩、离心浇注、顶模、成型体推出及补缩浇口去除。该铸造装置制得的铸件组织均匀，减少了气孔砂眼等缺陷。
Patent WO-2019096084-A1 (WO)
Title: 天线装置及移动终端
Inventor: LI RIHUI
IPC: H01Q1/50
Filed: 2018-11-12
Abstract: 本公开提供一种天线装置及移动终端，该天线装置包括天线本体、电容和天线馈源，所述天线本体通过断口分隔形成第一天线单元和第二天线单元，其中，所述第一天线单元具有一天线反馈点和一接地点，所述天线反馈点通过所述电容与所述天线馈源电连接，所述天线反馈点位于所述接地点与所述断口之间，所述第一天线单元通过所述接地点接地连接，所述第二天线单元远离所述第一天线单元的一端接地连接。
Patent WO-2019101052-A1 (WO)
Inventor: XU BIAO
IPC: G02B13/06
Filed: 2018-11-20
Abstract: 一种光学成像镜头，该镜头沿着光轴由物侧至像侧依序包括：第一透镜(E1)、第二透镜(E2)、第三透镜(E3)、第四透镜(E4)、第五透镜(E5)、第六透镜(E6)、第七透镜(E7)和第八透镜(E8)。其中，第一透镜(E1)具有正光焦度；第二透镜(E2)具有负光焦度；第三透镜(E3)具有正光焦度或负光焦度；第四透镜(E4)具有正光焦度或负光焦度，其物侧面(S7)为凸面，像侧面(S8)为凸面；第五透镜(E5)具有正光焦度或负光焦度，其像侧面(S10)为凹面；第六透镜(E6)具有正光焦度或负光焦度；第七透镜(E7)具有正光焦度；以及第八透镜(E8)具有负光焦度。
Patent WO-2020073449-A1 (WO)
Inventor: JING XIAOHONG
IPC: B65D85/86
Filed: 2018-11-28
Abstract: A support member assembly and a package box using same. The support member assembly comprises a first support member (1) and a second support member (2), the first support member (1) is provided at the left side of a box body (3) of one package box, one first side bonding COF panel (4) is put at the right side of a first step portion (11), and one second side bonding COF panel (5) is put at the right side of a second step portion (12); the second support member (2) is put at the right side of the second side bonding COF panel (5); the package box comprises a box body (6) and a cover body (7), and the support member assembly is provided in the box body (6). By means of a "step-shaped" support member assembly structure, when the multiple stacked side bonding liquid crystal laminating panels are stacked up and down, the side portions of upper and lower panels can be staggered left and right due to existence of the step portions, and potential poor risks caused by mutual interference contact of the side portions of the upper and lower panels are effectively avoided.
Patent WO-2019169911-A1 (WO)
Title: Array substrate, display panel and display device
Inventor: SHAN JIANFENG
IPC: G09G3/36
Filed: 2018-11-29
Abstract: Disclosed is an array substrate (110). The array substrate (110) comprises: a substrate; an active switch (T0); and a shift register circuit (300) located on the side edge of the substrate and having multiple stages of shift registers, with each shift register comprising: a first switch (T10), a second switch (T20), a third switch (T30), a fourth switch (T40) and a fifth switch (T50), wherein the distance (L2) between a first end and a second end of a plurality of switches of the shift register is greater than the distance (L) between a first end and a second end of the active switch (T0). Increasing the distance between a first end and a second end of a plurality of switches in a shift register solves the problem of the poor electrical performance of the active switch (T10) caused by a change in the curvature of a flexible display panel and the problem of bright and dark lines caused thereby.
Patent WO-2020107395-A1 (WO)
Title: Ensembles de câbles à fibres optiques et leur procédé de formation
Inventor: CAO SONGHUA
IPC: G02B6/38
Filed: 2018-11-30
Abstract: L'invention concerne des ensembles de câbles à fibres optiques qui comprennent un câble à fibres optiques, un connecteur de fibres optiques installé sur au moins l'un du câble à fibres optiques, et une gaine qui est moulée sur des parties du connecteur de fibres optiques et du câble à fibres optiques. Un tube est utilisé pour empêcher un matériau de la gaine de pénétrer dans l'espace qui existe entre un corps de connecteur du connecteur de fibres optiques et une extrémité d'une gaine du câble à fibres optiques. L'invention porte également sur des procédés de formation des ensembles de câble à fibres optiques.
Patent WO-2020107503-A1 (WO)
Inventor: YANG CHUNHUI
IPC: G02F1/1339
Filed: 2018-12-04
Abstract: A display panel, a manufacturing method, and a display device. A display panel comprises: a color resist layer (20) formed on a substrate (10), the color resist layer (20) comprising a first color resistor (21), a second color resistor (22), and a third color resistor (23) which are provided side by side at different heights; and supporting columns (30) provided on the color resist layer (20). The supporting columns (30) comprise: a primary supporting column (31), which is provided on the first color resistor (21); a first secondary supporting column (32) provided on the second color resistor (22); a second secondary supporting column (33) provided on the third color resistor (23). The height difference between the primary supporting column (31) and the first secondary supporting column (32) is a first segment gap (D1); the height difference between the primary supporting column (31) and the second secondary supporting column (33) is a second segment gap (D2); the first segment gap (D1) is equal to the second segment gap (D2).
Patent WO-2020113585-A1 (WO)
Inventor: ZHONG XIAOFENG
IPC: C07F9/53
Filed: 2018-12-07
Abstract: Disclosed are an acylphosphine oxide compound and a preparation method therefor, which belong to the field of initiators. The method comprises: reacting compound B and compound C under the conditions of an organic base and an organic solvent so as to obtain the acylphosphine oxide compound. The chemical structural formula of compound B is as follows: (B), the chemical structural formula of compound C is as follows: (C), and the chemical structural formula of the acyl phosphine oxide compound is as follows: (A), wherein R 1  is hydrogen, a C 1 -C 6 alkyl group, methoxy, methylthio, dimethylamino, chloroformyl, phenyl, benzoyl, (4-dimethylamino) phenyl, α-naphthyl, β-naphthyl or (9-ethyl-9H-carbazole)-3-yl, R 2  and R  1  are the same, n is the substitution number of R 1  on the corresponding phenyl ring, and is 1, 2 or 3, and m is the substitution number of R 2  on the corresponding phenyl ring, and is 1, 2 or 3. The preparation method is safe and environmentally friendly, and has a high yield.