Rail transit rail-ground insulation surveying and mapping system, trolley and method

Abstract

The invention discloses a rail transit rail-ground insulation surveying and mapping system, trolley and method, and the system comprises a detection system computer, a high-power integrated signal modulation device, a rail-ground insulation detection trolley, and a test line. The detection system computer is configured with special detection software and realizes data communication with the signalmodulation device and the detection trolley in a wired Ethernet or wireless WIFI communication mode; the high-power comprehensive signal modulation device is provided with a touch human-computer interface, is provided with an Ethernet RJ45 and WIFI communication interface, and is in data communication with the detection system computer and the detection trolley; and the rail-ground insulation detection trolley is provided with a touch human-computer interface, is provided with a USB and Ethernet communication interface, and realizes data communication with a detection system computer and a signal modulation device. The test process is convenient and fast, the test data is accurate, and the functions of rail-to-ground transition resistance measurement, rail-to-ground insulation weak section analysis and positioning and the like are achieved.

Description

technical field [0001] The invention relates to the field of rail transit measurement, in particular to a rail transit rail-ground insulation surveying and mapping system, a trolley and a method. Background technique [0002] The insulation level of the running rail is the main factor affecting the leakage of stray current in the system. Due to factors such as the operating environment, rail-to-ground transition resistance cannot be achieved, and rail-to-ground transition resistance exists. Rail-to-ground transition resistance should be detected during the initial construction and operation of urban rail transit to ensure that the DC traction power supply system is stray Current leakage is under control. Due to the seamless welding of the running rails of the whole line, the rails are tens of kilometers long, and there are many equalizing return lines on the extension line, the traditional voltammetry method cannot effectively test the rail-to-ground transition resistance i...

AI Technical Summary

Problems solved by technology

[0031] The transition resistance of the rail to the drainage network is sampled and tested manually. In order to meet the test conditions, the up and down flow equalizing lines of the running rails in the test area need to be removed, and the up and down flow equalizing lines are mostly connected to the running rails by welding, which is not easy to remove and After the test is completed, it needs to be restored to ensure that it will not affect the normal operation of the locomotive the next day. The practicability is poor, and the sampling of this test method is random; there are large errors in manual wiring and readings; it consumes a lot of manpower and the detection cycle is long, making it difficult to adapt At present, the number of subway lines continues to increase, the shortage of relevant professionals and the demand for modern and intelligent subway operation management

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