A shunting signal light state and turnout position detection device

Abstract

The present invention belongs to the technical field of non-electric centralized interlocking station operation management system, and particularly relates to a shunting signal light state and turnout position detection device, including a detection box body, which is installed on the sleeper below the signal light canopy and below the point rail; a circuit board, which is installed inside the detection box body, includes a control unit, a communication unit, a power supply unit and a collection unit, the collection unit includes a signal light state collection unit and / or a turnout position collection unit, which transmits the signal light position state and turnout position signal to the control unit, the control unit transmits the collection signal to the indoor monitoring equipment through the communication unit, and the power supply unit supplies power to the entire circuit board. The present invention is convenient for on-site installation and maintenance, can collect the signal light position state and turnout position in real time, reduce the labor intensity of operators, objectively, truly and accurately reflect the on-site approach situation, and effectively prevent the occurrence of operation accidents.

Description

Technical Field

[0001] The invention belongs to the technical field of non-electric centralized interlocking station yard operation management system, and in particular relates to a shunting signal light state and switch position detection device. Background Art

[0002] At present, the electric centralized interlocking system is the main means of station yard control of locomotive operations, but the electric centralized interlocking system is expensive, the construction process is complex and the engineering volume is huge. Therefore, there are still non-centralized shunting operation areas in many stations throughout the railway. Trackside equipment such as turnouts are all non-electrical interlocking control. The station status requires manual visual operation. The locomotive shunting operation relies on the operator to visually confirm the opening status of the approach. Once the operator misidentifies the approach status, or an unrelated person mistakenly turns the turnout, it is very easy to cause the wrong delivery, squeeze the turnout or even derailment accidents. Over the years, such accidents have occurred repeatedly throughout the railway and have become the focus of station safety operations; for example: the vehicle depot is responsible for the daily inspection and maintenance of vehicles. There is a specific maintenance work site, and there is no centralized control equipment or shunting signal in the maintenance yard. All turnouts are manually turned. When performing vehicle maintenance, the vehicle to be repaired needs to be towed (pushed) to a specific maintenance operation point. The operator performs shunting operations according to the operation plan, and the position of the turnout is completely confirmed by the switchman and connector during the vehicle shunting process.

[0003] Therefore, there are many non-electric centralized interlocking turnouts in railway stations, passenger and technical stations, freight yards and dedicated lines. Locomotive operations in non-electric interlocking areas lack safety guarantees, posing a safety hazard to railway transportation. The electrification transformation of non-electric interlocking stations is costly, or some special area stations do not have the conditions for construction. Summary of the invention

[0004] In order to solve the problems existing in the prior art, the present invention proposes a shunting signal light status and switch position detection device, which is convenient for on-site installation and maintenance, can collect signal light status and switch position in real time, reduce the labor intensity of operators, objectively, truly and accurately reflect the on-site approach conditions, and effectively prevent the occurrence of operational accidents.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] The present invention provides a shunting signal light state and turnout position detection device, comprising:

[0007] The detection box is installed on the sleeper below the signal light canopy and below the point rail;

[0008] The circuit board is installed inside the detection box body, and includes a control unit, a communication unit, a power supply unit and a collection unit. The collection unit includes a signal light status collection unit and / or a switch position collection unit, which transmits the signal light status and switch position signals to the control unit. The control unit transmits the collection signal to the indoor monitoring equipment through the communication unit. The power supply unit supplies power to the entire circuit board.

[0009] Furthermore, the detection box body is fixed on the sleeper below the point rail by screws, and the detection box body is fixed below the signal light eaves by a magnetic disk or 3M glue.

[0010] Furthermore, each group of turnouts is installed with two sets of detection devices, namely a turnout positioning detection device and a turnout reverse position detection device. A first magnet is fixed on the left point rail, and a second magnet is fixed on the right point rail. The first magnet is used in conjunction with the turnout positioning detection device to determine whether the turnout is in a positioned state, and the second magnet is used in conjunction with the turnout reverse position detection device to determine whether the turnout is in a reverse state.

[0011] Furthermore, the control unit includes a single chip microcomputer.

[0012] Furthermore, the power supply unit includes a power monitoring circuit and a power conversion circuit. The power conversion circuit is used to convert 3.6V DC power into 3.3V DC power as a working power supply for other units. The power monitoring circuit is used to measure the consumption and charging of the 3.6V battery and is connected to the power monitoring terminal of the microcontroller.

[0013] Furthermore, the control unit also includes a peripheral circuit, which includes a level conversion circuit, a decoupling circuit, a printer interface, a debugging interface and a reset circuit; the level conversion circuit is used to convert the 3.3V DC power output from the power conversion circuit into 1.8V DC power for use by the communication unit; the decoupling circuit is used for the power conversion circuit to output a stable 3.3V DC power.

[0014] Furthermore, the communication unit adopts an NB-IoT network transmission circuit, which includes a BC26 chip, a BC26 control circuit and a SIM card. The input end of the BC26 control circuit is connected to the BC26 control end of the single-chip microcomputer, and the output end is connected to the control end of the BC26 chip; the SIM card is connected to the BC26 chip.

[0015] Furthermore, the switch position acquisition unit adopts a proximity sensor.

[0016] Furthermore, the signal light status acquisition unit adopts a light sensor.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] The shunting signal light state and switch position detection device of the present invention has a signal light detection box body fixed under the signal light canopy by a magnetic disk or 3M glue, and a switch detection box body fixed on the sleeper under the point rail by screws, which is convenient for on-site installation, replacement and maintenance and is firmly fixed.

[0019] By comparing the point rail detection method with the existing manual turnout method, the turnout detection method has the advantages of transparent, easy on-site construction and maintenance, and less installation coordination and negotiation. The hardware circuit design of the communication unit, control unit and power supply unit for signal light status detection and turnout position detection is the same. Different collection units can be selected according to different collection objects, which makes it easy to achieve product standardization.

[0020] The present invention realizes the collection of signal light status and switch position through the principles of light sensing and magnetic induction, and transmits the collected signals to indoor monitoring equipment through the NB-IoT network to generate shunting operation protection information for display and reminder to users, which not only reduces the labor intensity of operators, but also objectively, truly and accurately reflects the on-site approach conditions, effectively preventing the occurrence of operational accidents.

[0021] Using NB-IoT network, it supports China Mobile, China Unicom and China Telecom operators, and at the same time carries out IoT card docking, embedded program development and related platform construction of various operators. It has the advantages of massive access, low power consumption, super coverage and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 is a schematic diagram of the installation of a signal light state detection device according to an embodiment of the present invention;

[0024] Figure 2 1. It is a schematic diagram of the installation of a turnout position detection device according to an embodiment of the present invention;

[0025] Figure 3 is a schematic structural diagram of a signal light status detection box according to an embodiment of the present invention;

[0026] Figure 4 is a schematic structural diagram of a switch position detection box body according to an embodiment of the present invention;

[0027] Figure 5 is a power monitoring circuit diagram of an embodiment of the present invention;

[0028] Figure 6 is a power conversion circuit diagram of an embodiment of the present invention;

[0029] Figure 7 is a control circuit diagram of BC26 according to an embodiment of the present invention;

[0030] Figure 8 is a circuit diagram of a BC26 chip according to an embodiment of the present invention;

[0031] Fig. 9 is a circuit diagram of a SIM card according to an embodiment of the present invention;

[0032] Fig.10 is a circuit diagram of a light sensor according to an embodiment of the present invention;

[0033] Fig.11 is a circuit diagram of a proximity sensor according to an embodiment of the present invention;

[0034] Fig.12 is a level conversion circuit diagram of an embodiment of the present invention;

[0035] Fig.13 is a decoupling circuit diagram of an embodiment of the present invention;

[0036] Fig.14 is a circuit diagram of a printer interface according to an embodiment of the present invention;

[0037] Fig.15 is a debugging interface circuit diagram of an embodiment of the present invention;

[0038] Fig.16 is a reset circuit diagram of an embodiment of the present invention;

[0039] Fig.17 It is a circuit diagram of a single chip microcomputer according to an embodiment of the present invention.

[0040] The meanings of the numbers in the figure are:

[0041] 1. Detection box, 2. Signal light canopy, 3. Magnetic disk, 4. Light sensor, 5. Ear plate, 6. Mounting hole, 7. Sleeper, 8. Turnout positioning detection device, 9. Turnout reverse position detection device, 10. Left point rail, 11. First magnet, 12. Left basic rail, 13. Right point rail, 14. Second magnet, 15. Right basic rail. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] The shunting signal light state and switch position detection device of this embodiment includes a detection box body 1 and a circuit board; for the signal light, such as Figure 1 and Figure 3 As shown, the top of the detection box body 1 is fixedly connected to the disk 3 by screws, and the detection box body 1 is fixed under the signal light canopy 2 (such as iron material) through the disk 3, or the detection box body 1 is bonded under the signal light canopy 2 (such as plastic material) by 3M glue, and the detection box body 1 supports the external light sensor 4; for the turnout, Figure 2 and Figure 4 As shown, ear plates 5 are provided on both sides of the detection box body 1, and mounting holes 6 are opened on the ear plates 5. Screws pass through the mounting holes 6 to fix the detection box body 1 on the sleeper 7 under the point rail; the detection box body 1 is sealed by glue injection, which can meet the IP67 waterproof grade requirement under normal temperature and pressure; the above fixing method is convenient for on-site installation, replacement and maintenance, and is firmly fixed.

[0044] The circuit board is installed inside the detection box body 1, and includes a control unit, a communication unit, a power supply unit and a collection unit. The hardware circuit design of the communication unit, the control unit and the power supply unit for signal light status detection and switch position detection is the same. Different collection units are selected according to different collection objects. When the signal light status is detected, the collection unit adopts a signal light status collection unit to collect the signal light position status through the principle of light sensing, and transmits the collection signal to the control unit. When the switch position is detected, the collection unit adopts a switch position collection unit to collect the switch position through the principle of magnetic induction, and transmits the collection signal to the control unit; the control unit transmits the signal light position status and switch position signals to the indoor monitoring equipment through the communication unit; the power supply unit provides power for the entire circuit board.

[0045] Each set of turnouts is equipped with two sets of detection devices, namely, turnout positioning detection device 8 and turnout reverse position detection device 9, which are installed at the following locations: Figure 2As shown in the figure, the installation positions of the two sets of detection devices are designed according to the position of the point rail when the turnout is in the positioning or reverse position state. The first magnet 11 is fixed on the left point rail 10, and the second magnet 14 is fixed on the right point rail 13. The first magnet 11 is used in conjunction with the turnout positioning detection device 8 to determine whether the turnout is in the positioning state, and the second magnet 14 is used in conjunction with the turnout reverse position detection device 9 to determine whether the turnout is in the reverse position state. The specific turnout position detection is as follows: when the turnout is in the positioning state, the point rail moves to the right as a whole, the right point rail 13 is closely attached to the right basic rail 15, and the left point rail is in the reverse position. The gap between the left point rail 10 and the left basic rail 12 is 14.5-15.2 cm. At this time, the first magnet 11 fixed on the left point rail 10 moves to the sensing area just above the switch positioning detection device 8, and the switch positioning detection device 8 collects the switch positioning signal; when the switch is in the reverse position state, the point rail moves to the left as a whole, the left point rail 10 is closely attached to the left basic rail 12, and the gap between the right point rail 13 and the right basic rail 15 is 14.5-15.2 cm. At this time, the second magnet 14 fixed on the right point rail 13 moves to the sensing area just above the switch reverse position detection device 9 (such as Figure 2 ), the turnout reverse position detection device 9 collects the turnout reverse position signal.

[0046] like Fig.17 As shown, the control unit includes a single-chip microcomputer and peripheral circuits. Preferably, the model of the single-chip microcomputer U3 is STM32L151CBT6.

[0047] like Figure 5 and Figure 6 As shown, the power supply unit includes a power monitoring circuit and a power conversion circuit. The power conversion circuit uses a low voltage dropout regulator U1 (LD0) TLV75533PDBVR to convert 3.6V DC power into 3.3V DC power as the working power supply for other units. The power monitoring circuit uses a battery fuel gauge (U2) LTC2942 to measure the consumption and charging of the 3.6V battery, and provide power warning by measuring the actual power consumption and the number of data sent. U2 pin, SDA pin, SCL pin and U3 Pin, SDA pin, and SCL pin are connected accordingly.

[0048] The peripheral circuits include level conversion circuits, decoupling circuits, printer interfaces, debug interfaces, and reset circuits; Fig.12 As described above, the level conversion circuit uses a 2-bit bidirectional voltage level converter (U4) TXS0102-Q1 to convert the 3.3V DC power output from U1 into 1.8V DC power for use by the communication unit, and the USART2_RXD pin and USART2_TXD pin of U4 are connected to the USART2_RXD pin and USART2_TXD pin of U3 accordingly; Fig.13As shown in the figure, the decoupling circuit is used to introduce the noise voltage on the power supply into the ground plane, so that the power supply voltage is kept at a stable value of 3.3V. Fig.14 As shown, the USART1_TX pin of the printer interface J1 is connected to the USART1_TX pin of U3 for connecting the printer. Fig.15 As shown, the debugging interface P2 uses the SWD interface to perform serial debugging on U3, and the NRST pin, SWCLK pin, and SWDIO pin of P2 are connected to the NRST pin, SWCLK pin, and SWDIO pin of U3 accordingly. Fig.16 As shown, the NRST pin of the reset circuit is connected to the NRST pin of U3 to restore U3 to its initial state.

[0049] The communication unit adopts NB-IoT network transmission circuit, which includes BC26 chip (U5), BC26 control circuit and SIM card, such as Figure 7 As shown, the BC26 control circuit includes three parts, the wake-up circuit, the reset circuit and the power-on / off circuit. The wake-up circuit is pulled high for 1s in the PSM state to wake up, the BC26_PSM pin is connected to the BC26_PSM pin of U3, and the BC26_PSMEINT pin is connected to the BC26_PSMEINT pin of U5; the reset circuit is pulled high for 50ms when resetting, the BC26_RST pin is connected to the BC26_RST pin of U3, and the BC26_RESET pin is connected to the BC26_RESET pin of U5; the power-on / off circuit is pulled high for at least 500ms when turning on and off, the BC26_ON_OFF pin is connected to the BC26_ON_OFF pin of U3, and the PWRKEY pin is connected to the PWRKEY pin of U5. Fig. 9 As shown, the SIM_RST pin, SIM_DATA pin, SIM_VDD pin, SIM_CLK pin, and SIM_GDN pin of the SIM card are connected to the SIM_RST pin, SIM_DATA pin, SIM_VDD pin, SIM_CLK pin, and SIM_GDN pin of U5 accordingly; Figure 8 As shown, the BC26_RXD pin and BC26_TXD pin of U5 are connected to the BC26_RXD pin and BC26_TXD pin of U4. Using the NB-IoT network, it supports mobile, Unicom, and telecom operators, and at the same time carries out the connection of IoT cards of various operators, embedded program development, and related platform construction. It has the advantages of massive access, low power consumption, super coverage, and low cost.

[0050] like Fig.11As shown, the turnout position acquisition unit uses a proximity sensor, and the SWITCH_01 pin and SWITCH_02 pin are connected to the SWITCH_01 pin and SWITCH_02 pin of U3 accordingly. Fig.10 As shown, the signal light status acquisition unit adopts a light sensor, and the Signal_lamp pin is connected to the Signal_lamp pin of U3.

[0051] The shunting signal light status and switch position detection device has a low power consumption mode. The trigger signal of the proximity sensor and the light sensor wakes up the detection device. After the signal is sent, it enters a sleep state, so that the battery life can meet more than 1.5 years.

[0052] The present invention has the advantages of simple structure, easy installation, practicality and high reliability. It realizes the collection of signal light status and switch position through the principles of light sensing and magnetic induction, and transmits the collected information to indoor monitoring equipment through the NB-IoT network, which not only reduces the labor intensity of operators, but also objectively, truly and accurately reflects the on-site approach conditions.

[0053] Finally, it should be noted that the above-described embodiments are only specific implementations of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them. The protection scope of the present invention is not limited thereto. Although the present invention is described in detail with reference to the above-described embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above-described embodiments within the technical scope disclosed by the present invention, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A shunting signal light status and turnout position detection device, characterized in that: include: The detection box is installed on the sleeper below the signal light canopy and below the point rail; A circuit board is installed inside the detection box body, and includes a control unit, a communication unit, a power supply unit and a collection unit. The collection unit includes a signal light status collection unit and a switch position collection unit, and transmits the signal light status and switch position signals to the control unit. The control unit transmits the collection signal to the indoor monitoring equipment through the communication unit. The power supply unit supplies power to the entire circuit board; Two detection devices are installed on each set of turnouts, namely, a turnout positioning detection device and a turnout reverse position detection device. A first magnet is fixed on the left point rail, and a second magnet is fixed on the right point rail. The first magnet is used in conjunction with the turnout positioning detection device to determine whether the turnout is in a positioning state, and the second magnet is used in conjunction with the turnout reverse position detection device to determine whether the turnout is in a reverse position state; the control unit includes a single-chip microcomputer; the power supply unit includes a power monitoring circuit and a power conversion circuit, and the power conversion circuit is used to convert 3.6V DC into 3.3V DC as the working power supply for other units. The power monitoring circuit is used to measure the consumption and charging of the 3.6V battery and is connected to the power monitoring terminal of the single-chip microcomputer; the control unit also includes a peripheral circuit, which includes a level conversion circuit, a decoupling circuit, a printer interface, a debugging interface and a reset circuit; the level conversion circuit is used to convert the 3.3V DC power output from the power conversion circuit into 1.8V DC power for use by the communication unit; the decoupling circuit is used for the power conversion circuit to output a stable 3.3V DC power; the switch position acquisition unit uses a proximity sensor; the signal light status acquisition unit uses a light sensor.

2. The shunting signal light state and turnout position detection device according to claim 1, characterized in that: The detection box body is fixed on the sleeper below the point rail by screws, and the detection box body is fixed below the signal light eaves by a magnetic disk or 3M glue.

3. The shunting signal light state and turnout position detection device according to claim 1, characterized in that: The communication unit adopts an NB-IoT network transmission circuit, which includes a BC26 chip, a BC26 control circuit and a SIM card. The input end of the BC26 control circuit is connected to the BC26 control end of the single-chip microcomputer, and the output end is connected to the control end of the BC26 chip; the SIM card is connected to the BC26 chip.

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