I. Overview SG-631 Brake Performance Tester is the latest self-developed portable intelligent test instrument based on ARM's latest 32-bit single-chip microcomputer. It is equipped with uCOS II real-time multitasking operating system. The on-chip integrated sensor is used to complete the high-speed acquisition and processing of various parameters during the test to test the braking safety performance of the automobile. This instrument is developed according to the requirements of the road test for braking performance in the latest national mandatory standard GB7258-2012 "Safety Technical Conditions for Motor Vehicles". It is suitable for the detection of braking performance of motor vehicles and the investigation of traffic accidents. The instrument adopts large-screen Chinese character dot matrix liquid crystal display, Chinese character prompt, clear and intuitive. The test project is menu-driven and easy to use. The test data and the test curve can be stored synchronously (a total of 1000 sets of test data can be stored) for later viewing, analysis, printing, etc. of the test data. It is an ideal testing equipment for the automobile manufacturing industry, the automobile maintenance industry, and the automobile inspection and scientific research departments. The whole machine adopts a portable design and has a small size. The external sensor is equipped with a powerful magnet for easy installation and is also suitable for testing on vehicles with small space. The instrument can input the 7-digit license plate number and the name of the province with two words, and can input characters such as “alert”, “study” and “hang”. The instrument is equipped with a standard RS232 interface, which can be equipped with an external micro printer for test data and curve printing. The test results can also be sent to other devices or computers to flexibly form an online test system. The instrument cooperates with the test software of the Windows system to transmit test data, curves, etc. to the notebook computer, and realizes massive storage and printing of test data. The system can also be equipped with wireless test and transmission modules to realize wireless test and transmission of test data and test curves.
Second, the main technical parameters and performance indicators l Built-in power supply: DC8.4v (1.2v 800mAH nickel-metal hydride battery 7) l standard 9-pin RS232 interface. The baud rate is 9600, the data bit is 8 bits, the stop bit is 1 bit, and there is no parity.
