Electronic Scale Anti Cheat Key Technology Research And System Design

Electronic truck scale is indispensable of weighing equipment in the modern large amounts of material transactions, its simple operation, accurate weighing results have brought great convenience to modern production, transport. With the economic growth and technological advancement, the electronic truck scale manufacturing had come a long way to improve. In the frequent trading with interest driven, some people use high technology to develop a new wireless remote control cheating device. The cheating device with characteristics of invisibility and instant, easy, cheating time is short and so on.This article is mainly targeted at the wireless remote control cheating devices, designing a dual-frequency directional interference anti cheat system to prevent the wireless remote control cheating system.First we should analysis and research the cheating principle of the device, so as to draw the anti cheat system module and how it works. Using anti-cheating directional high frequency radio signal to detect if there is a high-frequency cheating signal in space . According to the analysis and research of characteristics of high frequency cheating signals, demodulating and decoding the intercepted cheating high frequency signal, analyzing cheating information carried by high frequency cheating signal, drawing the high frequency cheating signal information format in sending. According to the cheating signal data format generates tamper high frequency emission signal information format and tamper data. Controlled by microprocessor and targeted for automatic or manual interference. Antenna theory is used in this system to properly design the antenna to launch a regional selective interference signal for further improving the high frequency anti cheating signal pertinence and decreasing the transmitter power.The system is controlled by single-chip microcomputer, including high-frequency wireless signal reception and decoding section, encoding and launched segments. It is a time division multiplexing dual frequency directional interference system. Due to radio frequency transmitter and receiver are part of analog circuits and chip micro-computer and peripheral devices are belonging to digital circuit of single, this system is a combination of digital and analog high-frequency circuit system, must take a corresponding analysis of the interference with the system and anti-jamming measures. Interference within the system mainly from the digital and analog part interaction, signal reception and emission, the power supply and PCB layout traces interfere with each other. External interference usually generated by radiation or IO-input.