Supply of new WYD-A hand-held brake performance tester - Zibo Micro-Electronics Co., Ltd.

WYD-A portable braking performance tester I. Overview WYD-A portable braking performance tester, is my company developed a handheld intelligent tester. It uses a 32-bit embedded systems arm, its intelligent design, making it easy to operate. The instrument developed in accordance with the national mandatory standards GB7258-2004 "safe operation of motor vehicles technical conditions" Road Test braking performance test requirements for motor vehicle brake performance testing and accident investigation. The instrument uses 240 * 128 large-screen LCD display, Chinese prompts, you can display the number of test data, curves, clear and intuitive. Test items using menu-driven operation, easy to use, and automatic storage of test results after the test data are available for viewing analysis. The automotive manufacturing industry, forensic, auto repair industry and vehicle testing, research departments ideal test equipment. System is equipped with a standard RS232 interface, it can be connected with an external printer for convenient test results and test data dynamic curve print out the test results can also be sent to other devices or computers, or be controlled by other host computers, flexible constitution online testing system. The machine is portable, compact, equipped with powerful magnets on the external sensor, easy to install, but also for testing on small space vehicles. The instrument can be entered seven digits of the license plate number and the word of the province. The test instrument can be used two methods, especially for large cars, steam trains road test detection. ? Second, the main technical parameters and performance indicators built-in power:? DC9.6v (1.2v 1200mAH NiMH battery 8) standard 9-pin RS232 interface. (3 feet signal output, 2 feet signal input, 5 feet signals). 9600 baud, 8 data bits, 1 stop bit, no parity. Specific data see attached instructions. ? Dimensions: 205 X 145 X 55 mm Weight:? 1 kg (including internal battery). ? Measuring range: Acceleration: ≤ ± 1.5g time: ≤10s Resolution:? Acceleration: 0.01m / s2 Speed: 0.01km / h time: 0.01s distance: 0.01m Accuracy:? 2.0 Third, test items 1, brake initial velocity (v0) Unit: km / h 2, the braking distance (s) Unit: m 3, Coordinated Universal Time (t ') Unit: s 4, maximum deceleration (Gmax) Unit: m / s2 5, the average reduction speed (G ') Unit: m / s2 6, the average deceleration fully developed (MFDD) Unit: m / s2