Portable BTM detector

Abstract

The invention relates to a portable BTM detector. The portable BTM detector comprises onboard equipment, trackside equipment and hand-held equipment, wherein the onboard equipment is electrically connected with a BTM host, extracts and sends a desired packet and BTM state information to a server, the trackside equipment receives and measures radio frequency energy sent by a BTM antenna and measures a distance between a BTM antenna and a steel rail surface, and simulates and sends a packet signal of an FSK transponder, the hand-held equipment is used for generating a report and displaying a test result, and the onboard equipment, the trackside equipment and the hand-held equipment are all in wireless communication with the server and are all installed in a portable case. The detector that can be put in the portable case can detect an excitation signal of the transponder, measure a distance between the BTM antenna and the rail surface, and detect a packet receiving and sending function in a closed cycle, realizes networking, uploads a test result to a server automatically, and adapts to various existing BTM host interfaces due to configuration of a BTM information interaction unit, thereby being very conveniently used in site.

Description

Technical field [0001] The invention relates to the detection application field of railway signal equipment, in particular to a portable BTM detector and a detection method. technical background [0002] The transponder message transmission module (BTM) is mainly composed of the BTM host and the BTM antenna. The main function is to transmit the activation energy signal to the ground transponder through the transmitting antenna, and to receive the uplink message sent by the transponder through the receiving antenna Data, the message data is sent to the on-board train control equipment, so the identification and diagnosis, regular maintenance and detection of the abnormality of the BTM host and antenna are particularly important. At present, the detection of BTM that has been installed on site is mainly through visual inspection, or the operator uses a transponder to send a message under the BTM antenna and then observes the status of the BTM indicator to verify whether the transpo...

AI Technical Summary

Problems solved by technology

At present, the detection of BTM installed on site is mainly through visual inspection, or the operator uses the transponder to send a message under the BTM antenna and observes the status of the BTM indicator light to check whether the transponder excitation signal can successfully activate the transponder. It is not possible to quantitatively evaluate the emission performance of the BTM antenna, and it is not portable

[0003] The following problems exist in the current BTM detection device: 1. Need to receive the message data from the interface (hereinafter referred to as the B interface) of the BTM host and the vehicle-mounted equipment. To the B interface, the ground equipment that sends the data is analyzed. After the detection is completed, it is necessary to reconnect the BTM equipment to the vehicle equipment cable

There are great installation risks in such an operation, including incorrect cable connection, looseness, damage to equipment, etc.; 2. All equipment is integrated in the inspection vehicle, and the operator needs to go down to the maintenance ditch when performing on-site inspection. For the operator There will be problems of electromagnetic radiation, and there will be dangers of strong electricity; 3. The equipment networking cannot be realized, that is, the test results cannot be automatically backed up to the server or the Internet, which is not convenient for data storage and subsequent analysis; 4. The test system is relatively large, Does not have good portability; 5. Some measuring devices determine the center point of the BTM antenna by artificially shrinking the fixing device, and the transmitting antenna cannot be completely positioned at the geometric center point of the BTM antenna through manual positioning

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