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Digital phase sensitive rail circuit receiver

A phase-sensitive track circuit and receiving device technology, applied in the field of traffic signal automatic control system, can solve the problems of deviation of track voltage calculation results, weak anti-interference ability, relay vibration, etc., so as to improve reliability and anti-interference, It is convenient for on-site construction and the effect of eliminating jitter

Inactive Publication Date: 2005-03-02
兰州大成科技股份有限公司 +1
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AI Technical Summary

Problems solved by technology

"Railway Communication Signal" (the 6th page of the 3rd phase of volume 35 in 1999) discloses a kind of WXJ25 type microelectronic phase-sensitive track receiver, and the deficiency that this receiver exists has: The interference ability is not strong; 2. Because there is no amplitude sampling of the local signal, when the local signal fluctuates, the calculation result of the rail voltage is biased; 3. Since the receiver output drives the safety relay, when the relay is near the reliable pick-up value, the relay’s The wings will vibrate; 4. For the section of the track with one send and multiple receivers, an additional receiver is still required, and the relay contacts are required to be used in series, which is inconvenient to use

Method used

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  • Digital phase sensitive rail circuit receiver

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Embodiment Construction

[0017] A digital phase-sensitive track circuit receiving device is composed of a host circuit, an input circuit, a communication circuit and an output control circuit. The host circuit includes a microcontroller MCU with A / D (analog / digital) conversion and programming functions and its auxiliary circuits. The MCU coordinates the work of each part of the circuit, which collects and performs calculations through the A / D port, and the calculation results are output through the communication circuit and the output control circuit; the auxiliary circuit includes an address code input circuit and a type code input circuit, which are used to distinguish the address of the device and type, on the corresponding position of the motherboard (that is, the interface circuit board used for power supply, communication, information collection and control output), the information of "one send and multiple receivers" is marked, and when the device is inserted into the motherboard, it will be aut...

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Abstract

The invention provides a digital phase sensitive railway rail circuit receiver. The host circuit of the mentioned device uses micro controller with analogue amount / digital amount conversion and programming function. It collects railway signal through software, and it transmits signal with noncontact electron switch and communication bus, eliminates the vibration. It improves the system stability, reliability and anti-interference property. The invention collects local signals, it measures and calculating track voltage and phase difference more precisely.

Description

technical field [0001] The invention relates to a traffic signal automatic control system, in particular to a digital phase-sensitive railway track circuit receiving device. Background technique [0002] The track circuit receiving devices currently used on railways mainly use binary two-phase phase-sensitive track relays, and use the magnetic field generated after the local signal and the track signal are orthogonal to drive the contact action of the relay to reflect the state of the track circuit. "Railway Communication Signal" (the 6th page of the 3rd issue of volume 35 in 1999) discloses a kind of WXJ25 type microelectronic phase-sensitive track receiver, and the deficiency that this receiver exists has: The interference ability is not strong; 2. Since the amplitude of the local signal is not sampled, when the local signal fluctuates, the calculation result of the rail voltage is biased; 3. Since the output of the receiver drives the safety relay, when it is near the rel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B61L23/00G08C19/00
Inventor 范多旺魏宗寿方亚非何涛牛宏侠陈光武魏文军旷文珍
Owner 兰州大成科技股份有限公司
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