Patents Assigned to SHANGHAI FUDAN MICROELECTRONICS GROUP COMPANY LIMITED
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Patent number: 11705717Abstract: A ground fault circuit interrupter is provided, including a main control chip, a tripping unit and a self-test detection unit, wherein the tripping unit is connected with the self-test detection unit at a detection point and coupled with a load circuit; the self-test detection unit is coupled with the main control chip, and configured to detect a signal at the detection point and output the signal to the main control chip; the main control chip is coupled with the self-test detection unit, and configured to in a self-test state, simulate a circuit fault, perform self-test, and determine whether the circuit fault could be detected and an alarm signal response to the circuit fault is generated, based on the signal. A self-test function and alarm function response to a circuit fault in a ground fault circuit interrupter can be tested during a final test of production.Type: GrantFiled: April 20, 2020Date of Patent: July 18, 2023Assignee: Shanghai Fudan Microelectronics Group Company LimitedInventors: Chunyong Wu, Yang Liu, Lei Shen, Shusen Hao
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Patent number: 11622584Abstract: An electronic-cigarette cartridge and an electronic cigarette are provided. The electronic-cigarette cartridge includes: a first contact point and a second contact point which are connected to a base part of an electronic cigarette, wherein the first contact point is configured to connect a control signal, and the second contact point is configured to input a reference voltage signal; an authentication module, wherein one end of the authentication module is connected to the first contact point, another end is connected to the second contact point, and is configured to interact with the base part of the electronic cigarette to conduct anti-counterfeiting authentication; and a heating module which is connected in parallel with the authentication module and is configured to performing heating after the anti-counterfeiting authentication is passed; wherein a working frequency of the authentication module is at least 10 times that of the heating module.Type: GrantFiled: September 21, 2020Date of Patent: April 11, 2023Assignee: Shanghai Fudan Microelectronics Group Company LimitedInventors: Gang Zhang, Yaohai Song, Zhihua Shen, Yixin Shi, Yuan Peng, Tingsong Luo
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Patent number: 11588317Abstract: A ground fault circuit interrupter is provided, including a sensor module, a leakage protection module, a self-test module and a tripping module. The sensor module is configured to generate a sensor current according to a detection signal. The leakage protection module is configured to: generate a trip driving signal in a detection stage according to the sensor current; and generate a trip driving signal in a non-detection stage after the self-test module has a fault. The self-test module is configured to generate the detection signal in the detection stage, and determine that the leakage protection module does not have a fault if the leakage protection module generates the trip driving signal. The tripping module is configured to respond to the trip driving signal generated in the non-detection stage to disconnect a load from a power supply circuit, and not respond to the trip driving signal generated in the detection stage.Type: GrantFiled: December 15, 2020Date of Patent: February 21, 2023Assignee: Shanghai Fudan Microelectronics Group Company LimitedInventors: Shusen Hao, Yang Liu, Chunyong Wu, Jiwen Gong
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Patent number: 11258246Abstract: Ground fault circuit interrupter is provided, including a transformer, a protection switch, a residual current protection control unit, a residual current simulation unit and a self-test unit, wherein the self-test unit is coupled with the line where the protection switch is located; in a self-test state, the self-test unit is configured to control the residual current simulation unit to generate a simulated residual current, detect a level change on the line where the protection switch is located, and control the protection switch to be disconnected from the residual current protection control unit or to make the line where the protection switch is located be conducted after a preset protection time period of receiving the residual current signal higher than a preset operating threshold. Improper actions of the ground fault circuit interrupter caused by a large electromotive force generated when a simulated residual current disappears are avoided.Type: GrantFiled: April 20, 2020Date of Patent: February 22, 2022Assignee: Shanghai Fudan Microelectronics Group Company LimitedInventors: Chunyong Wu, Lei Shen, Jiwen Gong, Yang Liu, Shusen Hao
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Publication number: 20220014010Abstract: A ground fault circuit interrupter is provided, including a sensor module, a leakage protection module, a self-test module and a tripping module. The sensor module is configured to generate a sensor current according to a detection signal. The leakage protection module is configured to: generate a trip driving signal in a detection stage according to the sensor current; and generate a trip driving signal in a non-detection stage after the self-test module has a fault. The self-test module is configured to generate the detection signal in the detection stage, and determine that the leakage protection module does not have a fault if the leakage protection module generates the trip driving signal. The tripping module is configured to respond to the trip driving signal generated in the non-detection stage to disconnect a load from a power supply circuit, and not respond to the trip driving signal generated in the detection stage.Type: ApplicationFiled: December 15, 2020Publication date: January 13, 2022Applicant: Shanghai Fudan Microelectronics Group Company LimitedInventors: Shusen HAO, Yang LIU, Chunyong WU, Jiwen GONG
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Publication number: 20210386123Abstract: An electronic-cigarette cartridge and an electronic cigarette are provided. The electronic-cigarette cartridge includes: a first contact point and a second contact point which are connected to a base part of an electronic cigarette, wherein the first contact point is configured to connect a control signal, and the second contact point is configured to input a reference voltage signal; an authentication module, wherein one end of the authentication module is connected to the first contact point, another end is connected to the second contact point, and is configured to interact with the base part of the electronic cigarette to conduct anti-counterfeiting authentication; and a heating module which is connected in parallel with the authentication module and is configured to performing heating after the anti-counterfeiting authentication is passed; wherein a working frequency of the authentication module is at least 10 times that of the heating module.Type: ApplicationFiled: September 21, 2020Publication date: December 16, 2021Applicant: Shanghai Fudan Microelectronics Group Company LimitedInventors: Gang ZHANG, Yaohai SONG, Zhihua SHEN, Yixin SHI, Yuan PENG, Tingsong LUO
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Patent number: 10923899Abstract: A ground fault protection system is provided. A ground fault protection device includes a current transformer module, a detection coil module and a ground fault circuit interrupter, wherein the current transformer module includes a current transformer, the detection coil module includes a detection coil, a hot and neutral penetrate through the current transformer and the detection coil, the current transformer module outputs a mutual inductance current, when the current transformer and the detection coil form mutual inductance and form a current path with the ground fault circuit interrupter, the ground fault circuit interrupter outputs a disconnection control signal to disconnect connection of the hot and neutral with a load based on the mutual inductance current, and a detection circuit includes a signal generation module which outputs a test signal including at least one pulse signal in one cycle of an AC signal.Type: GrantFiled: March 20, 2018Date of Patent: February 16, 2021Assignee: Shanghai Fudan Microelectronics Group Company LimitedInventors: Shusen Hao, Yang Liu, Xueqiu Yu
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Publication number: 20200350757Abstract: Ground fault circuit interrupter is provided, including a transformer, a protection switch, a residual current protection control unit, a residual current simulation unit and a self-test unit, wherein the self-test unit is coupled with the line where the protection switch is located; in a self-test state, the self-test unit is configured to control the residual current simulation unit to generate a simulated residual current, detect a level change on the line where the protection switch is located, and control the protection switch to be disconnected from the residual current protection control unit or to make the line where the protection switch is located be conducted after a preset protection time period of receiving the residual current signal higher than a preset operating threshold. Improper actions of the ground fault circuit interrupter caused by a large electromotive force generated when a simulated residual current disappears are avoided.Type: ApplicationFiled: April 20, 2020Publication date: November 5, 2020Applicant: Shanghai Fudan Microelectronics Group Company LimitedInventors: Chunyong WU, Lei SHEN, Jiwen GONG, Yang LIU, Shusen HAO
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Publication number: 20200350758Abstract: A ground fault circuit interrupter is provided, including a main control chip, a tripping unit and a self-test detection unit, wherein the tripping unit is connected with the self-test detection unit at a detection point and coupled with a load circuit; the self-test detection unit is coupled with the main control chip, and configured to detect a signal at the detection point and output the signal to the main control chip; the main control chip is coupled with the self-test detection unit, and configured to in a self-test state, simulate a circuit fault, perform self-test, and determine whether the circuit fault could be detected and an alarm signal response to the circuit fault is generated, based on the signal. A self-test function and alarm function response to a circuit fault in a ground fault circuit interrupter can be tested during a final test of production.Type: ApplicationFiled: April 20, 2020Publication date: November 5, 2020Applicant: Shanghai Fudan Microelectronics Group Company LimitedInventors: Chunyong WU, Yang LIU, Lei SHEN, Shusen HAO
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Patent number: 9367713Abstract: A contactless communication device comprises a contactless front chip, a security chip concentrator and a security chipset. Wherein, said security chipset contains more than two security chips for storing and processing the contactless application data; said contactless front chip is used for implementing the interaction between said security chip and the external contactless field; said security chip concentrator, which is connected with the contactless front chip and with the security chip of the security chipset, is used for selecting a security chip based on the contactless application and implementing the connection between the selected security chip and the contactless front chip.Type: GrantFiled: December 14, 2010Date of Patent: June 14, 2016Assignee: Shanghai Fudan Microelectronics Group Company LimitedInventors: Wei Li, Yifei Liu, Yixin Shi, Tingsong Luo
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Patent number: 9252843Abstract: A method and an apparatus for data transmission between a contactless front element and a security element are provided. The method includes: the contactless front element transparently transmits first data obtained from a contactless identification device to the security element through a single wire connection; the security element processes the first data to generate second data; the contactless front element transparently transmits the second data obtained from the security element through the single wire connection to the contactless identification device. Compared with the prior art, the method can transmit the contactless data in real time between the contactless front element and the security element.Type: GrantFiled: October 27, 2010Date of Patent: February 2, 2016Assignee: Shanghai Fudan Microelectronics Group Company LimitedInventors: Wei Li, Jun Yu, Gang Zhang
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Publication number: 20130217328Abstract: A method and an apparatus for data transmission between a contactless front element and a security element are provided. The method includes: the contactless front element transparently transmits first data obtained from a contactless identification device to the security element through a single wire connection; the security element processes the first data to generate second data; the contactless front element transparently transmits the second data obtained from the security element through the single wire connection to the contactless identification device. Compared with the prior art, the method can transmit the contactless data in real time between the contactless front element and the security element.Type: ApplicationFiled: October 27, 2010Publication date: August 22, 2013Applicant: SHANGHAI FUDAN MICROELECTRONICS GROUP COMPANY LIMITEDInventors: Wei Li, Jun Yu, Gang Zhang