Method and system for testing parking brake performance

Abstract

The invention discloses a method and a system for testing parking brake performance, which overcome the defect of the method needing to build a parking slope and directly measure the traction force of a parked vehicle, a force cell is connected with the tested vehicle through a wire rope, traction force which accounts for 20 percent of the overall weight of the tested vehicle or 15 percent when the overall weight of the vehicle is less than 1.2 times as heavy as the curb weight is applied on the vehicle according to standard specifications, the parking brake performance is acceptable when thetested vehicle stays still, otherwise is unacceptable, and the acceptability or unacceptability of the parking brake performance can be judged on an on-site screen or remotely transmitted to a computer and judged in the form of reading. The testing system is small and does not require the building of a special-purposed slope, thus dispensing with land occupation and capital expenditure needed by the slope method to build the testing slope and creating favorable conditions for various vehicle testing stations to carry out the testing operation. Because the testing system adopts a zigbee wireless communication mode for the first time, the testing system reduces electricity consumption, is light, and does not have external cables.

Description

technical field [0001] The invention relates to a motor vehicle performance testing method and device, in particular to a traction force parking brake performance testing method and device. Background technique [0002] The development of the national economy is inseparable from road transport, and road transport must first ensure safe driving. Whether the parking brake performance of the motor vehicle is up to standard has a close relationship with driving safety. Accidents range from damage to the vehicle to serious death. Therefore, GB7258 "Technical Conditions for Motor Vehicle Operation Safety" and GB21861-2008 "Motor Vehicle Safety Inspection Items and Methods" both stipulate that the parking brake performance of motor vehicles should be tested, and the performance can only be allowed to go on the road. [0003] According to the national standard "Technical Conditions for Motor Vehicle Operation Safety" GB7258-2004, there are two methods for testing parking brake per...

AI Technical Summary

Problems solved by technology

[0009] It can be seen that each motor vehicle safety technical inspection agency must build two inspection ramps for parking brake performance testing in addition to the brake inspection platform, which needs to be at least 300m according to the technical requirements. 2 site (excluding turning and U-turn sites), and the corresponding infrastructure costs, so many inspection agencies are unable to carry out this business, and there is an urgent need for a better method and a more economical test device to come out

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