Sound controlled automatic warning device and method for unattended level railway crossing

A level crossing, automatic warning technology, applied in the direction of road traffic warning devices, etc., can solve the problem of not being able to see the train at a glance, and achieve the effect of reducing traffic accidents and off-road casualties, simple equipment and low cost

Inactive Publication Date: 2007-01-03
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the occlusion of the horizon, the shading of mist and floating dust, the curvature of the track, the

Method used

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  • Sound controlled automatic warning device and method for unattended level railway crossing
  • Sound controlled automatic warning device and method for unattended level railway crossing
  • Sound controlled automatic warning device and method for unattended level railway crossing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Embodiment 1 Unattended single-track railway level crossing

[0046] exist Figure 4 In , a listener U1a (U1b) is installed on each of the two rails of the railway. The mounting box is stuck on the bottom surface of the rail, and the jacking bolt utilizes the slope of the rail base to make the mounting box closely adhere to the bottom plane of the rail base.

[0047] The sealed microphone is placed in the installation box, and the soft rubber earpiece is attached to the bottom plane of the steel rail. With the help of the lifting force provided by the soft spring under the microphone, a good close fit is achieved. The wire sends the monitored analog signal to U2a (U2b) in the control box located in the cast iron square box at the base of the alarm through the snake tube. The two input terminals of the differential circuit U3 are digital signals Na and Nb, which are continuously compared in the differential circuit. Usually, Na and Nb reflect the digital signals genera...

Embodiment 2

[0053] Embodiment 2 unattended two-track railway level crossing

[0054] exist Figure 5 In , a listener is installed on each rail of the ascending and descending railways. The two that go up make one group, and the two that go down make another group. Follow the same example 1, connect U2~U5, and the output of U5 is connected to U6 through an OR circuit, that is, the uplink and downlink of U6~U8 are common.

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Abstract

The present invention belongs to the field of railway traffic safety equipment, and is especially one sound controlled automatic warning device and method for unattended level railway crossing. The device consists of a monitor, an integrated control module, a sound and light telltale and a power source. The warming method includes monitoring and receiving the sound of train, digitalizing treatment, comparing and judging in an electronic chip, calculating the time for the train to reach the crossing, and sending out sound and light alarm signal to show the approach of train. The present invention has high antijamming capacity and high weather resistance, and is suitable for use in field environment.

Description

technical field [0001] The invention belongs to the scope of railway traffic safety equipment, and in particular relates to a sound-controlled automatic early warning device and method for an unattended railway level crossing. Background technique [0002] Due to the existence of a large number of railway unguarded crossings, crossing traffic accidents and off-road casualties remain high. Due to local conditions, it is necessary to set up railway level crossings again, and the railway sector has an objective existence of unguarded crossings due to the limitation of manpower and material resources and the traffic and flow of people at the crossings; , ramps and other factors), the violations and carelessness of vehicles and pedestrians, etc., have caused frequent traffic accidents at unguarded crossings at railway level crossings, especially motor vehicle traffic accidents, which seriously affect railway traffic safety and often cause many accidents. Casualties outside the r...

Claims

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Application Information

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IPC IPC(8): B61L29/32
Inventor 徐维祥王君历刘旭敏
Owner BEIJING JIAOTONG UNIV
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