CN210839055U

CN210839055U - Railway signal power supply switching module

Info

Publication number: CN210839055U
Application number: CN201921352709.2U
Authority: CN
Inventors: 郭丰明
Original assignee: Shenzhen Keanda Rail Transit Technology Co ltd
Current assignee: Shenzhen Keanda Rail Transit Technology Co ltd
Priority date: 2019-08-20
Filing date: 2019-08-20
Publication date: 2020-06-23
Anticipated expiration: 2029-08-20

Abstract

The utility model discloses a railway signal power supply switching module, which is arranged in a power supply lightning protection box and comprises an input module which is divided into two power supplies, a monitoring module which detects the voltage and the current of two power supplies in the input module, a switching module which is connected with the monitoring module by signals, and an execution module which is connected with the switching module and is used for switching the on-off of two power supplies, wherein the two power supplies are connected by a switch circuit, the monitoring module is provided with a monitoring circuit which detects the voltage and the current of two power supplies in real time, the monitoring circuit comprises a comparison unit which compares the voltage and the current of the power supplies with a standard threshold value, the switching module comprises an amplifying unit and a triggering unit, the switching module receives the signals from the monitoring module and amplifies and triggers the execution module, the execution module is connected with the switch triggering ends of each phase in the two power supplies, therefore, the quick switching between two power supplies is realized, and meanwhile, the output alarms such as voltage undervoltage, lack of items and the like are monitored.

Description

Railway signal power supply switching module

Technical Field

The utility model relates to a power supply system specifically is a railway signal power supply switches module.

Background

The railway signal power supply system provides powerful guarantee for the construction speed and the standardization degree of railways, subways, urban light rails and the like; the power supply environment with high efficiency, high precision and high technical content is provided for a rapidly developed signal technology; the high-reliability, high-stability and high-safety use environment is provided for various user demands.

However, in the existing railway signal switching module, because real-time monitoring and fast switching cannot be realized, when a power circuit fails, the fast and accurate transmission of a signal power supply cannot be ensured, and even a signal is blocked, which brings great inconvenience to railway traffic.

SUMMERY OF THE UTILITY MODEL

Based on the weak point among the prior art that mentions among the above-mentioned background art, for this reason the utility model provides a railway signal power switches module.

The utility model discloses an adopt following technical scheme to overcome above technical problem, specifically do:

a railway signal power supply switching module comprises an input module, a monitoring module, a signal connection monitoring module, a connection switching module and an execution module, wherein the input module is divided into two power supplies, the monitoring module is used for detecting the voltage and the current of the two power supplies in the input module, the signal connection monitoring module is connected with the switching module, the execution module is used for switching the on and off of the two power supplies, a switching circuit used for connecting the two power supplies is arranged in the input module, and the switching circuit has two states of on and off; the monitoring module is internally provided with a monitoring circuit for detecting the voltage and the current of the two power supplies in real time, and the monitoring circuit comprises a comparison unit.

As a further aspect of the present invention: the two paths of power supplies in the input module are mutually standby power supplies, when one path of power supply fails or is in a maintenance state, the other path of power supply supplies power, and when the other path of power supply is electrified, the other path of power supply is disconnected.

As a further aspect of the present invention: the switch circuit comprises a switch tube and a control chip electrically connected with the switch tube, and the switch circuit is a logic gate circuit or a bistable trigger.

As a further aspect of the present invention: the comparison unit is provided with two input ports and an output port, one of the input ports is connected with the monitoring circuit and the adaptation module used for matching the detected current and voltage information in the power circuit, and the adaptation module is connected with the analysis module through the switching module.

As a further aspect of the present invention: the analysis module is connected with the output port of the comparison unit, and the other input port of the comparison unit is connected with the alarm through the analysis module, wherein the analysis module is used for comparing the power circuit information detected in the adaptation module with a standard threshold value and comparing the phase failure condition of each phase in the power circuit.

As a further aspect of the present invention: the conversion module comprises an amplifying unit for receiving and amplifying the power circuit signal from the monitoring module and a triggering unit for triggering the starting execution module.

As a further aspect of the present invention: the trigger unit is in a normally open state, the trigger unit is in signal connection with the amplifying unit, and the amplifying unit is used for amplifying the alarm signal and then sending the alarm signal to the trigger unit, so that the alarm signal is converted from the normally open state to a closed state, and the execution module is connected.

As a further aspect of the present invention: and the execution module is provided with a feedback unit which is connected with the switch trigger ends of each phase of the two paths of power supply circuits in the input module.

As a further aspect of the present invention: and a counting unit for accumulating the action times of the self-starting execution starting module is also arranged on a circuit connecting the input module and the feedback unit.

After the structure more than adopting, the utility model discloses compare in prior art, possess following advantage: this switching module is through setting up two tunnel powers that two tunnel each other are stand-by power supply in input module, and the monitoring circuit in the cooperation monitoring module implements the monitoring to the supply circuit in the input module, utilizes the standard threshold value in monitoring circuit and the contrast unit to implement the monitoring to the realization is controlled the switch circuit in the input module, has the fast switch-over, and each other is for the effect of substitution, effectively prevents the untimely and obstructed problem of railway signal transmission.

Drawings

Fig. 1 is a block diagram of a railway signal power supply switching module.

Fig. 2 is a block diagram of a preferred railway signal power switching module.

Fig. 3 is a detailed internal diagram of a comparison unit in the railway signal power supply switching module.

In the figure: 100-an input module; 101-a switching circuit; 200-a monitoring module; 201-a monitoring circuit; 202-a comparison unit; 300-a conversion module; 301-an amplification unit; 302-a trigger unit; 400-an execution module; 401-feedback unit.

Detailed Description

The present invention will now be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

Example 1

Please refer to fig. 1-3, in the embodiment of the utility model, a railway signal power supply switches module, railway signal power supply switches module sets up in the power lightning protection incasement, including being divided into the input module 100 of two way powers, to the monitoring module 200 of two way mains voltage electric current detection in the input module 100, the conversion module 300 of signal connection monitoring module 200, and connect conversion module 300, an execution module 400 for switching two way power break-make, wherein, two way powers each other are stand-by power, when the power breaks down or is in maintenance state all the way, supply power by another way power, it is corresponding, when power circular telegram all the way, another way power disconnection, prevent that railway signal power can't transmit, lead to the traffic to be obstructed.

Specifically, a switch circuit 101 for connecting two power supplies is arranged in the input module 100, the switch circuit 101 has two states of on and off, and corresponding input and output signals also have two states; in detail, the switching circuit 101 includes a switching tube and a control chip electrically connected to the switching tube, and an oscillation circuit is formed by the switching tube and the control chip to generate a high-frequency pulse, so that a high-voltage direct current generated by the high-voltage rectifying and filtering circuit is converted into a high-frequency pulse direct current, which is sent to the main transformer to be stepped down and converted into a low-frequency pulse direct current.

It should be noted that the switch circuit 101 is an application of the prior art, and may be a logic gate or a bistable flip-flop.

Furthermore, the monitoring module 200 is provided with a monitoring circuit 201 for detecting the voltage and the current of the two power supplies in real time, the monitoring circuit 201 comprises a comparison unit 202, and the monitoring circuit 201 detects the current and the voltage of one power supply of the two power supply circuits in real time, so as to prevent the signal transmission from being out of time or blocked due to insufficient power supply;

preferably, the comparison unit 202 has two input ports and one output port, wherein one input port is connected to the monitoring circuit 201 and an adaptation module for matching the detected current and voltage information in the power circuit, the adaptation module is connected to the analysis module through the switching module, the analysis module is connected to the output port of the comparison unit 202, the other input port of the comparison unit 202 is connected to the alarm through the analysis module, wherein, the analysis module is used for comparing the power circuit information detected in the adaptation module with a standard threshold value, and phase loss of each phase in the power circuit, allowing the current and voltage of the power circuit to vary within a certain fluctuation amplitude range, when the current and voltage values of the power circuit exceed the standard threshold interval or the phase loss occurs, an alarm signal is sent out through the alarm, and the safety alarm function is achieved.

Example 2

In order to further explain the above railway signal power switching module, the utility model provides a further embodiment, a railway signal power switching module, conversion module 300 is including being used for receiving the power supply circuit signal that comes from monitoring module 200 and with its enlarged amplification unit 301 and the trigger unit 302 that is used for triggering start execution module 400, wherein, trigger unit 302 is in normally open state, trigger unit 302 signal connection amplification unit 301, after power supply circuit's current-voltage numerical value exceeded standard threshold interval, the alarm sends alarm signal, monitoring module 200 sends alarm signal to conversion module 300 simultaneously, the amplification unit among conversion module 300 sends trigger unit 302 after amplifying alarm signal, make it turn into the closed state by normally open state, thereby put through execution module 400.

Still further, the execution module 400 is provided with a feedback unit 401, and the feedback unit 401 is connected to the switch trigger end of each phase in the two power circuits, so as to implement fast switching between the two power supplies.

More specifically, a circuit connecting the input module 100 and the feedback unit 401 is further provided with a counting unit for accumulating the number of times of actions taken by the execution module 400 since the start is started, the frequency of switching between the two power supplies in the input module 100 is monitored by the counting unit, and when the two power supplies are frequently switched, unsafe factors inevitably exist, and a maintainer is reminded to overhaul the two power supply lines one by one.

The foregoing is illustrative of the preferred embodiments of the present invention only, and is not to be construed as limiting the claims. The present invention is not limited to the above embodiments, and the specific structure thereof is allowed to be changed. However, all changes which come within the scope of the independent claims of the invention are to be embraced therein.

Claims

1. A railway signal power supply switching module comprises an input module (100) divided into two power supplies, a monitoring module (200) for detecting the voltage and the current of the two power supplies in the input module (100), a switching module (300) for connecting the signal with the monitoring module (200), a connection switching module (300) and an execution module (400) for switching the on and off of the two power supplies, and is characterized in that a switching circuit (101) for connecting the two power supplies is arranged in the input module (100), and the switching circuit (101) has two states of on and off; the monitoring module (200) is internally provided with a monitoring circuit (201) for detecting the voltage and the current of the two power supplies in real time, and the monitoring circuit (201) comprises a comparison unit (202).

2. The railway signal power supply switching module according to claim 1, wherein the two power supplies in the input module (100) are mutually backup power supplies, when one power supply fails or is in a maintenance state, the other power supply supplies power, and when the other power supply is powered on, the other power supply is disconnected.

3. The railway signal power supply switching module according to claim 1, wherein the switching circuit (101) comprises a switching tube and a control chip electrically connected to the switching tube, and the switching circuit (101) is a logic gate circuit or a bistable flip-flop.

4. The railway signal power supply switching module according to claim 1, wherein the comparison unit (202) has two input ports and one output port, one of the input ports is connected with the monitoring circuit (201) and the adaptation module for matching the detected current and voltage information in the power supply circuit, and the adaptation module is connected with the analysis module through the switching module.

5. The railway signal power supply switching module according to claim 4, wherein the analysis module is connected to an output port of the comparison unit (202), and another input port of the comparison unit (202) is connected to the alarm through the analysis module, wherein the analysis module is configured to compare the power circuit information detected in the adaptation module with a standard threshold, and to compare the phase loss condition of each phase in the power circuit.

6. A railway signal power supply switching module according to claim 1, wherein the switching module (300) comprises an amplifying unit (301) for receiving and amplifying the power circuit signal from the monitoring module (200) and a triggering unit (302) for triggering the start-up execution module (400).

7. The railway signal power supply switching module according to claim 6, wherein the trigger unit (302) is in a normally open state, the trigger unit (302) is in signal connection with the amplifying unit (301), and the amplifying unit (301) is configured to amplify the alarm signal and then send the amplified alarm signal to the trigger unit (302), so that the alarm signal is converted from the normally open state to a closed state, and the execution module (400) is switched on.

8. The railway signal power supply switching module according to claim 1, wherein the execution module (400) is provided with a feedback unit (401), and the feedback unit (401) is connected to the switch trigger terminals of the two power supply circuits in the input module (100).

9. The railway signal power supply switching module according to claim 8, wherein a circuit connecting the input module (100) and the feedback unit (401) is further provided with a counting unit for accumulating the number of actions of the execution module (400) from the start.