CN202429222U

CN202429222U - Crossing control system

Info

Publication number: CN202429222U
Application number: CN201120544522XU
Authority: CN
Inventors: 沈拓; 李红星; 陈己文; 胡广州
Original assignee: Shanghai Hengjun Science & Technology Co Ltd
Priority date: 2011-12-21
Filing date: 2011-12-21
Publication date: 2012-09-12
Anticipated expiration: 2021-12-21

Abstract

The utility model discloses a crossing control system. The crossing control system comprises a main control board, a shaft metering unit as well as a sounder, a roadway gate machine and a signal machine, wherein the shaft metering unit used for providing a locomotive position signal to the main control board; the sounder, the roadway gate machine and the signal machine are controlled by the main control board; the shaft metering unit comprises a shaft metering sensor, a current-voltage conversion circuit, an analog comparator and a reference voltage generating circuit; a current signal output end of the shaft metering sensor is electrically connected with a current signal input end of the current-voltage conversion circuit; a voltage signal output end of the current-voltage conversion circuit is electrically connected with a voltage signal input end of the analog comparator; an output end of the reference voltage generating circuit is electrically connected with a reference voltage signal input end of the analog comparator; and an output end of the analog comparator is electrically connected with a locomotive position detecting port of the main control board. By using the locomotive position disclosed by the utility model, the position of a locomotive is detected and the moving speed of the locomotive is obtained through the shaft metering sensor, so that the main control board can accurately control the signal machine, the roadway gate machine and the sounder.

Description

A kind of road junction control system

Technical field

The utility model relates to the intelligent road junction of railway control system technical field.

Background technology

The road junction refers to the crossing of road and railway line, is the road of the dealing of train, self-propelled vehicle, animal-drawn vehicle, pedestrian and livestock.In recent years, along with the continuous extension of railway line, the improving constantly of train road speed, the rising year by year and road junction quantity increasing of freight volume, the crossing safety problem becomes increasingly conspicuous.

Existing road junction control system can not solve the crossing safety problem well; Therefore; For fear of crossing safety hidden danger, further improve the road junction carrying capacity, guarantee car and pedestrian's safety; Must improve the precision that locomotive position detects through technological means, strengthen the inspecting force of road junction equipment state.

The utility model content

The purpose of the utility model is to the crossing safety problem a kind of road junction control system with higher-security to be provided.

The technical scheme that the utility model adopts is: a kind of road junction control system, comprise master control board, and for master control board provides the meter axle unit of locomotive position signal, and, be controlled by sounder, roadway gate machine and the signal of master control board; Said meter axle unit comprises axle count sensor, current-voltage conversion circuit, analog comparator and reference voltage generating circuit; The current signal output end of said axle count sensor is electrically connected with the current signal input end of current-voltage conversion circuit; The voltage signal output end of current-voltage conversion circuit is electrically connected with the voltage signal input end of analog comparator; The mouth of reference voltage generating circuit is electrically connected with the reference voltage signal input end of analog comparator, and the mouth of analog comparator is electrically connected with the locomotive position detection port of master control board.

Preferably, the roadway gate control port of said master control board is electrically connected with the control end of roadway gate machine through roadway gate motion driving circuit; The mouth that being used to of said roadway gate machine detected the position detecting device of roadway gate position is electrically connected with the roadway gate position probing port of master control board.

Preferably; Said signal comprises grade crossing signal and obstruction signal; The grade crossing signal control port of said master control board is electrically connected with the control end of grade crossing signal through the grade crossing signal driving circuit, and the obstruction signal control port of said master control board is electrically connected with the control end of obstruction signal through the obstruction signal driving circuit.

Preferably, the mouth of the fracture of wire testing circuit of said grade crossing signal is electrically connected with the grade crossing signal fracture of wire detection port of master control board, and the mouth of the fracture of wire testing circuit of obstruction signal is electrically connected with the obstruction signal fracture of wire detection port of master control board.

Preferably, the open contact coil that is electrically connected on the relay in the current supply circuit of sounder is electrically connected between the sound equipment control port and ground of master control board.

The beneficial effect of the utility model: the road junction control system of the utility model utilizes axle count sensor to detect the position and the kinematic velocity that obtains locomotive of locomotive, makes master control board control signal machine, roadway gate machine and sounder accurately.In addition, the road junction control system of the utility model detects the state of road jaws equipment through various feedback signals, so that in time find fault, accomplishes the fault guiding.

Description of drawings

Fig. 1 is the structural representation of the said road junction of the utility model control system;

Fig. 2 is the fall into a trap structural representation of axle unit of Fig. 1.

The specific embodiment

As shown in Figure 1; The road junction control system of the utility model comprises that as shown in Figure 2, this meter axle unit 7 comprises axle count sensor 73, current-voltage conversion circuit 75, analog comparator 71 and reference voltage generating circuit 72 by the master control board 1 of power supply 8 power supplies, sounder 2, meter axle unit 7, roadway gate machine 3 and signal 5; This axle count sensor adopts and becomes the attenuation principle; Utilize induction coil to form oscillation circuit, when do not have metal near the time, oscillating circuit is in running order; As metal object near the time, the eddy current because of metal object produces causes oscillating circuit to quit work, therefore, the current signal of the exportable reacting vehicle wheel location of axle count sensor (locomotive position in other words) is realized the detection that wheel passes through; This current-voltage conversion circuit 75 converts the current signal of axle count sensor output into voltage signal; And this voltage signal is inputed in the analog comparator 71 reference voltage that produces with reference voltage generating circuit 72 compare; Analog comparator 71 will input to as the comparative result of locomotive position signal in the master control board 1, and master control board 1 can be controlled sounder 2, roadway gate machine 3 and signal 5 actions according to comparative result.

The roadway gate control port of this master control board 1 is electrically connected with the control end of roadway gate machine through roadway gate motion driving circuit, with the up-down of the roadway gate of controlling roadway gate machine 3; The mouth that being used to of roadway gate machine 3 detected the position detecting device of roadway gate position can be electrically connected with the roadway gate position probing port of master control board 1 through light-coupled isolation, to obtain roadway gate machine status information in real time.

This signal 3 comprises grade crossing signal and obstruction signal; The grade crossing signal control port of this master control board 1 is electrically connected with the control end of grade crossing signal through the grade crossing signal driving circuit; The obstruction signal control port of this master control board 1 is electrically connected with the control end of obstruction signal through the obstruction signal driving circuit, makes master control board 1 can control the demonstration of grade crossing signal and obstruction signal according to the output of meter axle unit 7.In addition; The mouth of the fracture of wire testing circuit of this grade crossing signal can be electrically connected with the grade crossing signal fracture of wire detection port of master control board 1 through light-coupled isolation, and the mouth of the flashing signal testing circuit of the Der Blink und Abblendschalter of this grade crossing signal can be electrically connected with the flash of light detection port of master control board 1 through light-coupled isolation; The mouth of the fracture of wire testing circuit of this obstruction signal can be electrically connected with the obstruction signal fracture of wire detection port of master control board 1 through light-coupled isolation, makes master control board 1 can detect the state of road junction and obstruction signal in real time, promptly obtains the signal status information.

The sound equipment control port of this master control board 1 control open contact is electrically connected on the coil of the relay in the current supply circuit of sounder.The mouth of the audible communication signal deteching circuit of sounder is electrically connected with the audible signal detection port of master control board 1, makes master control board 1 can know the mode of operation of sounder.

This road junction control system generally also comprises indoor control panel 6; This indoor control panel 6 comprises and master control board 1 communication bonded assembly controller; And be controlled by the read-out of this controller, various indicator lamp and room sounding device etc.; Indoor control panel 6 shows the state of roadway gate machine and signal through read-out and various indicator lamp, and makes the room sounding device provide identical information synchronously with above-mentioned sounder.This indoor control panel 6 also has the change-over swith that is electrically connected with the state port switching of controller, and the guard can select automatic guidance or manually control through change-over swith.

The principle of work of the road junction control system of the utility model is: after system's power supply; The meter axle unit detects the locomotive position signal constantly, and sends it to master control board 1, after master control board is received the locomotive position signal; If it is approaching to be judged as locomotive; Then obtain locomotive speed concurrent deliver newspaper alert signal apart from the locomotive position signal that the axle count sensor that is provided with sends through computing according to fixed interval, alerting signal is sent, and sounder broadcast warning music, roadway gate machine fall, the alternately flicker of signal lamp red light.When master control board is judged as locomotive when leaving away, master control board sends removes alerting signal, and sounder stops to play, roadway gate rises, signal lamp is lighted bluish white lamp.

When the system failure, can adopt manual control, when the guard triggered change-over swith and carries out manual state of a control, controller notice master control board 1 automatic guidance lost efficacy.

The above is merely the utility model preferred implementation, is not the practical range that is used for limiting the utility model, and the equivalence of in the protection domain of the utility model, being done in every case changes and modifies, and all should think to have fallen in the protection domain of the utility model.

Claims

1. road junction control system is characterized in that: comprise master control board, and for master control board provides the meter axle unit of locomotive position signal, and, be controlled by sounder, roadway gate machine and the signal of master control board; Said meter axle unit comprises axle count sensor, current-voltage conversion circuit, analog comparator and reference voltage generating circuit; The current signal output end of said axle count sensor is electrically connected with the current signal input end of current-voltage conversion circuit; The voltage signal output end of current-voltage conversion circuit is electrically connected with the voltage signal input end of analog comparator; The mouth of reference voltage generating circuit is electrically connected with the reference voltage signal input end of analog comparator, and the mouth of analog comparator is electrically connected with the locomotive position detection port of master control board.

2. road junction according to claim 1 control system is characterized in that: the roadway gate control port of said master control board is electrically connected with the control end of roadway gate machine through roadway gate motion driving circuit; The mouth that being used to of said roadway gate machine detected the position detecting device of roadway gate position is electrically connected with the roadway gate position probing port of master control board.

3. road junction according to claim 1 control system; It is characterized in that: said signal comprises grade crossing signal and obstruction signal; The grade crossing signal control port of said master control board is electrically connected with the control end of grade crossing signal through the grade crossing signal driving circuit, and the obstruction signal control port of said master control board is electrically connected with the control end of obstruction signal through the obstruction signal driving circuit.

4. road junction according to claim 3 control system; It is characterized in that: the mouth of the fracture of wire testing circuit of said grade crossing signal is electrically connected with the grade crossing signal fracture of wire detection port of master control board, and the mouth of the fracture of wire testing circuit of obstruction signal is electrically connected with the obstruction signal fracture of wire detection port of master control board.

5. road junction according to claim 1 control system is characterized in that: the coil that open contact is electrically connected on the relay in the current supply circuit of sounder is electrically connected between the sound equipment control port and ground of master control board.