Software fault-tolerance processing method of excavator sensor

Abstract

The invention discloses a software fault-tolerance processing method of an excavator sensor. The software fault-tolerance processing method of the excavator sensor includes: setting an abnormal value range of the sensor; monitoring collection values of a main pump pressure sensor and a pilot pump pressure sensor in real time, and judging whether the collection values are in the abnormal value range of the sensor; sending out an abnormal alarm if the value of the main pump pressure sensor is in the abnormal value range of the sensor, and setting main pump pressure as a first fault-tolerance value; and sending out an abnormal alarm if the value of the pilot pump pressure sensor is in the abnormal value range of the sensor, and setting pilot pump pressure as a second fault-tolerance value. The software fault-tolerance processing method of the excavator sensor enables a system to be capable of compensating fault influence automatically under the condition that faults occur so as to maintain stability of the system and recover performance of the system before the faults as soon as possible, and therefore stability and reliability of operation of the system are guaranteed.

Description

technical field [0001] The invention relates to software fault-tolerant technology, in particular to a software fault-tolerant processing method for excavator sensors. Background technique [0002] The excavator is a large-scale equipment with integrated control of machinery, electricity and hydraulics. Its structure and wiring are complex, and ordinary operators have limited understanding of it. When there is a problem with the equipment, it is often necessary to wait for the maintenance personnel of the manufacturer to repair it. It is relatively scattered, and it takes more time for maintenance personnel to travel to the construction site, which prolongs the maintenance time, reduces the utilization rate of equipment, and increases maintenance costs. Due to the heavy workload of hydraulic excavators and the harsh construction environment, once a failure occurs, the safety of the operator is often endangered. [0003] Please see figure 1 As shown in the figure, some comp...

AI Technical Summary

Problems solved by technology

Assume that the sensor suddenly becomes abnormal at some point during the operation of the hydraulic system of the excavator, and cannot normally display the current pressure of the main pump / pilot pump. Suppose the operator controls the handle so that the main valve is fully opened, and at this time through the abnormal sensor However, it was found that the pressure did not reach the maximum value, which would give the operator the illusion that the hydraulic system of the excavator was faulty and affect the normal operation of the project.

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