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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: 2010-07-07
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 obstruction of mountains, bushes, and buildings, people cannot see the train 2000 meters away at a glance.

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

[0046] Example 1 Unmanned single-track railway level crossing

[0047] In Figure 4, a monitor U1a (U1b) is installed on each of the two rails of the railway. The mounting box is clamped on the bottom surface of the rail, and the top tightening bolt uses the inclined surface of the rail base to make the mounting box close to the bottom surface of the rail base.

[0048] The sealed microphone is placed in the installation box, and the soft rubber earpiece is attached to the bottom surface of the steel rail. With the support of the soft spring under the microphone, a good adhesion is achieved. The wire passes the snakeskin tube to send the monitored analog signal to the U2a (U2b) in the control box located in the cast iron square box inside the base of the warning device. The two input terminals of the differential circuit U3 are digital signals Na and Nb respectively. Continuous comparisons are made in the differential circuit. Normally, Na and Nb reflect the digital signals generat...

Embodiment 2

[0054] Example 2 Unmanned double-track railway level crossing

[0055] in Figure 5 , Install a monitor on each rail of the up and down railway. The two upstream ones form one group, and the two downstream ones form another group. Follow the same example as Example 1, connect U2~U5, the output of U5 is connected to U6 by an OR circuit, that is, part of U6~U8 is shared for the upstream and downstream.

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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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Patent Type & Authority Patents(China)
IPC IPC(8): B61L29/32
Inventor 徐维祥王君历刘旭敏
Owner BEIJING JIAOTONG UNIV
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