# Fifth Lichuang Electronic Design Competition #Smart and safe electricity detector

* 1. Self-introduction and team introduction
        Name: Cao Jun Gender: Male Age: 51
       Work unit: Qinhuangdao Xinlicheng Technology Co., Ltd.
       Position: R&D Director
       Name: Yang Aicheng Gender: Male Age: 41
      Work unit: Qinhuangdao Xinlicheng Technology Co., Ltd.
       Position: R&D Engineer

* 2. Brief introduction to the project

* 1. Project details:
         This project is designed to monitor the electrical safety conditions of urban street stores, small and medium-sized restaurants, various schools, hospital unit buildings, bank offices and other small places. This equipment can real-time monitor the three-phase voltage, current, leakage current, temperature of the three-phase line and neutral line of the three-phase four-wire system, and the power chip RN8302B accurately calculates the electricity and power used. When the set monitoring value is exceeded, Sound and light alarms are issued to remind people present to deal with relevant matters, and the corresponding information is transmitted to the network monitoring platform through wireless (2GNB4G, this project uses the mobile M5311 NB module), which can realize remote viewing and control.
* 2. The main challenge is simulation quantity.
         The leakage current monitoring reaches 20mA, and the maximum error cannot be greater than 5%. At 20mA, it can only float up or down by one mA. After trying several methods, I finally chose MCP607 to amplify the input signal and rational wiring to solve the problem.
* 3. Hardware key points: analog collection and wiring.
         Key points of the software: sampling of chip AD values.
* 4. Project material list:
      Attachment.
* 5. Upload project pictures
          5.1. Print the contest logo picture on the PCB. If not, you will be deemed to have given up the competition
          5.2. Other pictures of the project
* 6. Demonstrate your project and record it as a video for upload
          6.1. Upload the video to the official website of the competition
          6.2. Video title of Station B and link

< span class="colour" style="color:rgb(170, 170, 170)">< span class="size" style="font-size:12px">Note: ①: Video requirements: Please Horizontal shooting, resolution no less than 1280×720, format Mp4/Mov, single video size limited to 100M; ②: Video upload: please upload to the official website of the competition and Station B simultaneously ([www.bilibili.com](www. bilibili.com)), the top 10 most popular projects at Station B will receive 1,000-5,000 yuan in cash rewards, and other uploaded projects will receive 100 yuan Lichuang Mall no-threshold coupons; ③: Video title: The 5th Lichuang Electronic Design Competition: {Project Name }-{Video module name}; such as the 5th Lichuang Electronic Design Competition: "Autonomous Driving" project - team introduction. < /span>< /span>< br>
< br>
* 7. Whether it is released to the public for the first time
          7.1. The project has not been published before

* 8. Open source documents
* 9. References

Click the link for more details: [https:// www.szlcsc.com/go/dsxq](https://www.szlcsc.com/go/dsxq)