Vehicular harness on-off detection equipment

Abstract

The invention discloses vehicular harness on-off detection equipment which comprises a singlechip, a buzzer, a decoder, a voltage amplifying circuit, a divider circuit, a switching circuit and a voltage acquisition circuit. The buzzer is connected to the singlechip the signal output end of which is connected with the decoder, the signal output end of the decoder is connected with the input end of the voltage amplifying circuit, one path of the output end of the voltage amplifying circuit is connected with a matched connector (I) of a vehicular harness terminal through a triode Q3, and the other path is connected with a matched connector (II) of the vehicular harness terminal sequentially through the divider circuit, a triode Q4 and an LED D3. The vehicular harness on-off detection equipment improves the detection efficiency, lightens the amount of labor, has high detection speed and reduced error rate and can be used for carrying out all the detection including the contact of the connects at both ends of the vehicular harness.

Description

technical field [0001] The invention relates to a device for on-off detection of a vehicle-mounted wiring harness. Background technique [0002] The vehicle wiring harness (vehicle signal transfer wiring harness) is used to collect signals such as vehicle speed and engine speed. In order to detect whether the 20 wires in the vehicle wiring harness have poor contact, missing connection, or wrong connection, the inspector should inspect the already produced harness. [0003] At present, the usual tool for on-off detection of vehicle wiring harness is a multimeter. The inspection method is to use the red and black test leads of the multimeter to touch the terminals 1 to 20 at both ends of the vehicle wiring harness respectively, measure the continuity of the 20 wires, and check whether there are missing connections or wrong connections. The above-mentioned detection mainly has the following shortcomings: 1. Low efficiency: the inspection requires the cooperation of 2 personne...

AI Technical Summary

Problems solved by technology

The above-mentioned detection mainly has the following shortcomings: 1. Low efficiency: the inspection requires the cooperation of 2 personnel, and the work efficiency is slow. The average detection time for one wire harness is 1 to 2 minutes; , which may lead to missed inspection, and the unqualified product is judged as qualified; or wrong inspection, the qualified product is judged as unqualified; 3. The terminals at both ends of the wire harness and the contact of the sheath cannot be detected: the two ends of the wire harness are sheathed The connector is connected to the automobile instrument harness in this way, and this inspection method cannot detect whether the contact of the harness connector is good

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