In-station track occupation detection device

Abstract

The utility model relates to a device for detecting the occupation of a rail section by an in-station locomotive in the field of rail transportation, in particular to the field of in-station rail section occupation inspection and signal representation, and particularly relates to a device for detecting the occupation of the in-station rail section by using a piezoelectric effect. The device for detecting the track section occupied by the in-station locomotive mainly comprises a piezoelectric effect module, a display module and a wireless transmission module. The piezoelectric effect module is installed between a steel rail and a sleeper, receives the gravity of a locomotive and converts gravitational energy into current through the piezoelectric effect, a main body part of the display module is a signal lamp, and the wireless transmission module can convert an electric signal into a wireless signal and send the running direction of the locomotive and track section occupation information to a dispatching center. And the dispatching center can judge the track section occupation condition and the locomotive running direction accordingly. According to the invention, track section occupation inspection and running direction detection are completed by fully utilizing locomotive gravity resources, the in-station locomotive occupation protection detection efficiency can be improved on the premise of saving electric energy and cables, cable laying and additional power supply equipment are reduced, and in-station shunting operation locomotive occupation track section inspection and signal representation are effectively completed.

Description

Technical Field

[0001] The present invention relates to locomotive occupancy protection detection in the field of rail transportation, specifically to the field of station occupancy inspection and signal indication, and in particular to a device for locomotive occupancy protection detection in station shunting operations using a piezoelectric sensor. Background Art

[0002] Locomotive occupancy inspection and signal indication for shunting operations in stations are crucial areas in rail transit systems. The technologies involved are of great importance and are directly related to the safe operation of trains. When locomotives are shunted in stations, in order to ensure the safety of the locomotives and avoid collision accidents, it is necessary to accurately detect the occupancy of different track sections in order to reasonably dispatch the operation of the locomotives. However, the construction process of the widely used track circuit detection system is very complicated. The system requires many parts and an external power supply, which makes the work of detecting locomotive occupancy in the station arduous, inefficient, and wastes a lot of resources.

[0003] Therefore, for the track occupancy inspection and signal indication in the station, a technical method that can reduce resource consumption and simplify track occupancy detection is needed. Such a device can improve work efficiency and save resources while playing a greater role under the premise of ensuring safety, thereby improving the safety and operation efficiency of the rail transit system. Summary of the invention

[0004] The purpose of the present invention is to propose a device for detecting track occupancy in a station using a piezoelectric sensor, thereby improving the detection efficiency while simplifying the original in-station detection technology as much as possible and solving the problem of waste of resources caused by complicated detection methods.

[0005] To achieve this object, the present invention adopts the following technical solutions.

[0006] Limiting module (1): connected to the piezoelectric sensor module, such as Figure 1 The piezoelectric sensor module is fixed based on the sleeper.

[0007] Piezoelectric sensor module: such as Figure 2As shown, the entrance and exit are divided into four groups, which receive the locomotive gravity and generate electricity through the piezoelectric effect. The first group is connected to the No. 1 terminal in the signal box through the transmission module, the second and third groups are connected in series through the link module and then connected to the No. 2 terminal in the signal box through the transmission module, and the fourth group is connected to the No. 3 terminal in the signal box through the transmission module. From the end of the entrance to the beginning of the exit, a group of piezoelectric sensors is set every 25m (if less than 25m, it is treated as 25m), which is connected to the No. 2 terminal in the entrance and exit signal box, connected to the transmission module, receives the locomotive gravity, and generates electricity through the piezoelectric effect. The piezoelectric effect refers to the phenomenon that when some electrolytes are deformed by external forces in a certain direction, polarization will occur inside them, and opposite positive and negative charges will appear on their two opposite surfaces, converting gravitational energy into electrical energy. When the locomotive is pressed into the rail, the rail transmits the locomotive gravity to the piezoelectric sensor, and the piezoelectric sensor generates current through the piezoelectric effect to make the display module and the wireless transceiver module work.

[0008] Display module: Figure 4 As shown, it is connected to the transmission module and powered by the piezoelectric sensor module connected to the second terminal to display occupancy information. When the locomotive enters the station, the piezoelectric sensor module generates current, and the display module connected to it receives the current from the track piezoelectric sensor module, then it is determined that there is a car occupying the station and an occupancy indication is given. When the display module connected to it does not receive the current from the track piezoelectric sensor module, it is determined that there is no car occupying the station and an idle indication is given.

[0009] Link module: It is composed of lead wires, such as Figure 2 The output ends of the various piezoelectric sensing modules are connected in series as shown in FIG.

[0010] Transmission module: It is composed of cables, such as Figure 2 As shown in the figure, it is connected with the piezoelectric sensor module, the display module, and the wireless transceiver module, and the electric energy received from the piezoelectric sensor module is transmitted to the display module and the wireless transceiver module.

[0011] Wireless transceiver module: connected to the transmission module, powered by the piezoelectric sensor module received by terminals 1 and 3. When the locomotive presses into the track, the piezoelectric sensor module generates an electrical signal, and the wireless transceiver module converts the electrical signal received from the piezoelectric sensor module into a wireless signal and sends it to the dispatching center. The module is divided into two groups. Wireless 1 is connected to the first group of piezoelectric sensor modules through terminal 1, and wireless 3 is connected to the third group of piezoelectric sensor modules through terminal 3. When the locomotive presses into the rail, the wireless transceiver module converts the electrical signal received from the piezoelectric sensor module into a wireless signal and sends it to the dispatching center. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The present invention is a schematic diagram of a limited module structure in a locomotive occupancy protection detection device.

[0013] Figure 2 This is a diagram of the main body of the locomotive occupancy protection detection device.

[0014] Figure 3 This is the wiring terminal configuration diagram in the signal box of the locomotive occupancy protection detection device.

[0015] Figure 4 This is a side view of the overall layout of the locomotive occupancy protection detection device. DETAILED DESCRIPTION

[0016] The examples of the present invention are further described below in conjunction with the accompanying drawings of the present invention.

[0017] Taking a common locomotive as an example, in a station where locomotive occupancy protection detection is required, the piezoelectric sensor modules are installed with screws just below the rails on both sides of the first 4 groups at the section entrance (closest to the insulation joint), and the 8 installed piezoelectric sensor modules are connected in series with lead wires according to the diagram (2). A limiting module (1) is set on both sides of each piezoelectric sensor module and installed with screws to ensure that the piezoelectric sensor is in the correct position on the sleeper and can normally receive the gravity from the locomotive. The piezoelectric sensor modules connected in series are then connected with the wiring port (3) in the signal box using a transmission module. The corresponding ports are then connected to the wireless transceiver module and the display module according to Figure (2). A group of piezoelectric sensors are set every 25m from the end of the entrance to the beginning of the exit (if less than 25m, it is treated as 25m), and connected to the No. 2 terminal in the entrance and exit signal box. When the car presses into the track, the piezoelectric sensor converts the gravity energy of the locomotive into electrical energy through the piezoelectric effect. If the current generated by a single piezoelectric sensor is I, the current obtained by the first group in series is 2*I, the current obtained by the second and third groups in series is 4*I, and the current obtained by the fourth group in series is 2*I. Then, as shown in Figure (3), the transmission module is used to connect the piezoelectric sensor module to the wiring port, so that the current is supplied to the display module and the wireless transceiver module through the wiring port. The wireless transceiver module sends wireless signals to the dispatching center, and the dispatching center uses the two wireless transceiver modules 1 and 3. The direction of the train is determined by the order in which the blocks send signals. If the signal sent by the wireless transceiver module at the entrance is interrupted and the wireless transceiver module at the exit does not send a signal, the display module receives the current and lights up the occupied signal, thereby giving an occupied indication; if the signal sent by the wireless transceiver module at the entrance is interrupted and the wireless transceiver module at the exit sends a signal, it means that the vehicle in this section is occupied and has left, the display module disconnects the current, does not light up the occupied signal, thereby giving an idle indication, and the station arranges vehicle dispatch according to different situations; when the track is long, the locomotive will have a vacuum period when leaving the entrance, and the piezoelectric sensor group at the entrance cannot continue to be powered. At this time, the piezoelectric sensors set every 25m between the end of the entrance and the beginning of the exit continue to power the display module, and normally light up the occupied signal, thereby giving an occupied indication.

[0018] The advantage of this device is that the display module can give a corresponding indication only by receiving the locomotive's gravity, thereby improving the efficiency of locomotive occupancy protection detection in the station and reducing the laying of a large number of cables and the waste of resources such as electric energy.

[0019] The present invention utilizes locomotive gravity to generate electrical energy, fully utilizing existing resources to complete locomotive occupancy inspection and signal indication for shunting operations within the station, and improves the efficiency of locomotive occupancy protection detection within the station while saving electrical energy and cables as much as possible, reduces cable laying and additional power supply equipment, and effectively completes locomotive occupancy inspection and signal indication for shunting operations within the station.

[0020] The embodiments should not be regarded as limiting the present invention, and any improvements made based on the spirit of the present invention should be within the protection scope of the present invention.

Claims

1. A track occupancy detection device in a station, characterized in that: include, Limiting module: connected with the piezoelectric sensing module, and fixing the piezoelectric sensing module based on the sleeper; The piezoelectric sensor module installed between the sleeper and the rail near the insulating joint at the entrance of the station section: the entrance and exit are divided into four groups, which receive the weight of the locomotive respectively, generate electricity through the piezoelectric effect, and make the display module and the wireless transceiver module work. The first group is connected to the No. 1 terminal in the signal box through the transmission module, the second and third groups are connected in series through the link module and then connected to the No. 2 terminal in the signal box through the transmission module, and the fourth group is connected to the No. 3 terminal in the signal box through the transmission module. From the end of the entrance to the beginning of the exit, a group of piezoelectric sensors is set every 25m. If it is less than 25m, it will be treated as 25m and connected to the No. 2 terminal in the entrance and exit signal box; Display module installed beside the rail with insulation joints in the station: connected to the transmission module, powered by the piezoelectric sensor group connected to terminal No. 2, to display occupancy information; Linking module: connecting each group of piezoelectric sensor modules in series; Transmission module: connected with the piezoelectric sensor module, the display module and the wireless transceiver module, and transmits the electric energy received from the piezoelectric sensor module to the display module and the wireless transceiver module; The wireless transceiver module installed inside the display module is connected to the transmission module, and is powered by the piezoelectric sensor module received by terminals 1 and 3, converting the electrical signal into a wireless signal and sending it to the dispatch center.

2. The in-station track occupancy detection device according to claim 1, characterized in that: The piezoelectric sensor module is specifically: When the locomotive presses into the rail, the rail transmits the locomotive's gravity to the piezoelectric sensor, and the piezoelectric sensor generates current through the piezoelectric effect, making the display module and the wireless transceiver module work.

3. The in-station track occupancy detection device according to claim 1, characterized in that: The display module is specifically: When a locomotive enters the station, the piezoelectric sensor module generates current. The display module connected to it receives the current from the track piezoelectric sensor module, then it determines that there is a vehicle occupying the station and gives an occupied indication. When the display module connected to it does not receive the current from the track piezoelectric sensor module, it determines that there is no vehicle occupying the station and gives an idle indication.

4. The in-station track occupancy detection device according to claim 1, characterized in that: The wireless transceiver module is specifically: The module is divided into two groups. Wireless 1 is connected to the first group of piezoelectric sensor modules through terminal No. 1, and wireless 3 is connected to the third group of piezoelectric sensor modules through terminal No.

3. When the locomotive presses into the rail, the wireless transceiver module will convert the electrical signal received from the piezoelectric sensor module into a wireless signal and send it to the dispatching center.

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