Control device and method for hydraulic retarder

Abstract

The invention discloses a control device and a method for a hydraulic retarder. The method for the hydraulic retarder comprises acquiring a reference image about a place ahead of a vehicle which is running, forming similar sets of pixel points with similar pixel characteristics of the reference image and the pixel characteristics of the pixel points in any two similar sets are not similar, monitoring a working oil temperature, a working water temperature, a working speed of rotors in the hydraulic retarder and working hydraulic pressure of the hydraulic retarder during a hydraulic control process, and giving an alarm when any one of the working oil temperature, the working water temperature, the working speed of rotors in the hydraulic retarder and the working hydraulic pressure of the hydraulic retarder exceeds a preset safety value. The control device for the hydraulic retarder comprises an MCU control unit, a gear detection unit, a power supply control unit, a heat exchanger, a fan, a light and a brake lamp. The control device and the method for the hydraulic retarder can combine traffic characteristics, ramp characteristics with driving conditions of the automobile, and can control and reduce the speed of the automobile by the hydraulic retarder, thereby greatly improving the safety of the running of the automobile.

Description

technical field [0001] The invention belongs to the technical field of hydraulic retarder control devices, and in particular relates to a hydraulic retarder control device and method. Background technique [0002] The hydraulic retarder is responsible for controlling the hydraulic retarder and is the core component of the retarder. The current standby current of the controller of the existing hydraulic retarder is about 100mA, and its standby power consumption is too high and does not meet the requirements of the national Policy orientation for energy saving and emission reduction; in addition, most of the chips used in the existing retarder controllers are industrial-grade single-chip microcomputers, which have poor anti-interference performance; the speed signal acquisition of the existing controllers uses the original speed sensor Mode, the signal is weak and easily interfered by external signals. [0003] To sum up, when the current hydraulic retarder is slowing the veh...

AI Technical Summary

Problems solved by technology

[0002] The hydraulic retarder is responsible for controlling the hydraulic retarder and is the core component of the retarder. The current standby current of the controller of the existing hydraulic retarder is about 100mA, and its standby power consumption is too high and does not meet the requirements of the national standard. Policy orientation for energy saving and emission reduction; in addition, most of the chips used in the existing retarder controllers are industrial-grade single-chip microcomputers, which have poor anti-interference performance; the speed signal acquisition of the existing controllers uses the original speed sensor mode, the signal is weak and susceptible to interference from external signals

[0003] To sum up, when the current hydraulic retarder is slowing the vehicle, if the braking system of the vehicle is not activated, the brake light at the rear of the vehicle will not be on, and the vehicle behind the vehicle cannot know that the vehicle is in the Retarding, so that the driver of the vehicle behind cannot slow down in time, prone to vehicle rear-end collision accidents; and when the hydraulic retarder is running at high load for a long time, the hydraulic oil in the hydraulic retarder and the heat exchanger in the heat exchanger The coolant is easy to overheat, which can easily damage the hydraulic retarder due to high temperature

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