Railway turnout outdoor position acquisition device, consistency monitoring equipment and indoor and outdoor consistency monitoring system

Abstract

The utility model provides a railway turnout outdoor position acquisition device, consistency monitoring equipment and indoor and outdoor consistency monitoring system. Railway turnout outdoor position acquisition device includes: position representation contact state acquisition module, including positioning acquisition module and reverse position acquisition module, basic rail and tongue rail position data acquisition module, including positioning close clearance acquisition module and reverse close clearance acquisition module, gap image data acquisition module is used for gathering the gap image data of switch machine. Railway turnout outdoor position consistency monitoring equipment, including railway turnout outdoor position acquisition device, three position determination modules for determining the data output turnout outdoor position determination result of three kinds of acquisition mode, the comprehensive position determination module for outputting the turnout outdoor position determination result of three turnout outdoor position determination results. Railway turnout indoor and outdoor consistency monitoring system includes outdoor centralized monitoring equipment, indoor centralized monitoring equipment and centralized monitoring equipment.

Description

Technical Field

[0001] This utility model belongs to the field of turnout control technology, specifically relating to an outdoor position acquisition device for railway turnouts, a consistency monitoring device, and an indoor and outdoor consistency monitoring system. Background Technology

[0002] Railway turnouts are critical components of railway track structures, and their correct positioning directly affects train operation safety and transportation efficiency. In railway signal control systems, turnout position information is indicated both indoors and outdoors. Indoors, the turnout position is determined by collecting information from the turnout indicator circuits through the interlocking system, while outdoors, the actual position of the turnout switch machine is manually confirmed to verify whether the indoor and outdoor turnout positions match.

[0003] Indoor turnout location acquisition technology has reached a mature and stable stage of development. Through long-term practical application and technological iteration, the relevant data acquisition methods have undergone multiple tests and optimizations, demonstrating excellent performance in terms of both hardware durability and stability.

[0004] Compared to the mature and stable indoor turnout location acquisition, outdoor turnout location acquisition faces more complex and variable environmental challenges and technical difficulties. Due to the openness and uncertainty of the outdoor environment, factors such as severe weather conditions, complex electromagnetic interference, and frequent mechanical vibrations all pose significant threats to the accuracy and stability of the acquisition.

[0005] Therefore, there is a need to provide a railway turnout outdoor position consistency monitoring device, which aims to achieve accurate and reliable collection of outdoor turnout position information in complex outdoor environments, thereby providing strong technical support and guarantee for the accurate determination of the indoor and outdoor position consistency of railway turnouts and the overall railway operation safety. Summary of the Invention

[0006] To address the problems existing in the prior art, an outdoor position acquisition device for railway turnouts, a consistency monitoring device, and an indoor-outdoor consistency monitoring system are provided.

[0007] The technical solution adopted in this utility model is:

[0008] The first aspect of this utility model provides an outdoor location acquisition device for railway turnouts, comprising:

[0009] The position indication contact status acquisition module includes a positioning acquisition module and a reverse position acquisition module; the positioning acquisition module is connected to the positioning indication contact of the switch machine and is used to acquire the on-state voltage signal and off-state voltage signal of the positioning indication contact; the reverse position acquisition module is connected to the reverse position indication contact of the switch machine and is used to acquire the on-state voltage signal and off-state voltage signal of the reverse position indication contact.

[0010] The base rail and switch rail position data acquisition module includes a positioning close-fitting gap acquisition module and a reverse positioning close-fitting gap acquisition module. The positioning close-fitting gap acquisition module is used to acquire the gap between the base rail and the switch rail on one side, and the reverse positioning close-fitting gap acquisition module is used to acquire the gap between the base rail and the switch rail on the other side.

[0011] The gap image data acquisition module is used to acquire gap image data of the switch machine.

[0012] Based on the above, both the positioning acquisition module and the reversing acquisition module include an isolated power supply module and an isolated acquisition module; the isolated power supply module includes an IF1205S-1WR3 power chip, which provides a 5V voltage input to the isolated acquisition module; the isolated acquisition module includes a PS2801 optocoupler, one end of which serves as the acquisition input terminal connected to the switch machine, and the other end serves as the acquisition output terminal.

[0013] Based on the above, both the positioning tight-fit gap acquisition module and the reverse positioning tight-fit gap acquisition module include a magnetostrictive sensor and a data output interface designed with a 485 interface.

[0014] The magnetostrictive sensor is used to detect the gap distance between the base rail and the switch rail;

[0015] The magnetostrictive sensor is connected to the data output interface to output the detected gap distance between the base rail and the switch rail.

[0016] Based on the above, the magnetostrictive sensor performs detection based on the dual magnetostrictive induction output principle, including a measurement module and a magnetic induction element as the induction module;

[0017] The magnetic sensing element includes a magnetic sensing element A fixed on the base rail and serving as a non-contact magnetic ring, and a magnetic sensing element B fixed on the tip rail and serving as a movable magnetic ring. The magnetic sensing elements A and B are used to generate a magnetic field and act on the sensing section position of the measurement module.

[0018] The measurement module is fixed at the sleeper or rail base at the monitored location and includes a sensing section, a data acquisition section, an installation section, and cables.

[0019] The sensing segment is used to sense the magnetic field signals generated by the magnetic sensing element A and the magnetic sensing element B;

[0020] The acquisition section is electrically connected to the sensing section and is used to acquire the relative position change signal of the AB magnetic field signal sensed by the sensing section on the sensing section.

[0021] The installation section is used to install the measuring module at the sleeper or rail base at the monitored location;

[0022] The cable is electrically connected to the acquisition section and is used to input the electrical signal required for detection and output the acquisition signal.

[0023] The second aspect of this utility model provides an outdoor position consistency monitoring device for railway turnouts, characterized in that it includes:

[0024] The aforementioned railway turnout outdoor position acquisition device;

[0025] The first position determination module is connected to the position indicator contact status acquisition module and is used to output the outdoor position determination result of the first turnout based on the acquired on-state voltage signal and off-state voltage signal of the position indicator contact and the acquired on-state voltage signal and off-state voltage signal of the reverse position indicator contact.

[0026] The second position determination module is connected to the base rail and switch rail position data acquisition module and is used to output the outdoor position determination result of the second turnout based on the gap between the base rail and switch rail on one side and the gap between the base rail and switch rail on the other side.

[0027] The third position determination module is connected to the gap image data acquisition module and is used to output the outdoor position determination result of the third turnout based on the acquired gap image data of the switch machine.

[0028] The integrated position determination module is connected to the first position determination module, the second position determination module and the third position determination module, and outputs the outdoor position determination result of the turnout based on the outdoor position determination results of the first turnout, the second turnout and the third turnout.

[0029] The third aspect of this utility model provides a railway turnout indoor-outdoor consistency monitoring system, comprising:

[0030] The outdoor centralized monitoring equipment is used to output the outdoor position determination results of the turnout, and the railway turnout outdoor position consistency monitoring equipment described above is used.

[0031] Indoor centralized monitoring equipment is used to output the indoor position determination results of turnouts;

[0032] The centralized monitoring equipment is connected to both outdoor and indoor centralized monitoring equipment to compare the consistency between the received outdoor and indoor turnout position determination results and to output an alarm when the indoor and outdoor turnout positions are inconsistent.

[0033] This utility model has substantial features and advancements compared to the prior art, specifically:

[0034] This utility model's outdoor railway turnout position acquisition device employs three different acquisition methods to obtain outdoor turnout position information data. These three methods can mutually verify and check each other, enabling the railway turnout outdoor position consistency monitoring equipment to obtain accurate and reliable outdoor turnout positions. In the indoor-outdoor consistency monitoring system, the obtained outdoor turnout positions are then comprehensively compared and analyzed with the indoor turnout position information transmitted by the centralized indoor monitoring equipment, thereby achieving the goal of real-time and accurate monitoring of inconsistencies between indoor and outdoor railway turnout positions. This utility model can effectively avoid the risk of major or even catastrophic safety accidents caused by human error, greatly improving the accuracy and reliability of railway turnout position monitoring, and providing a solid technical guarantee and support for railway operation safety. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the principle of this utility model.

[0036] Figure 2 This is a circuit diagram of the positioning acquisition module and the reverse position acquisition module in this utility model.

[0037] Figure 3 This is a circuit diagram showing the connection between the positioning acquisition module and the reverse position acquisition module and the AC switch machine in this utility model.

[0038] Figure 4 This is a circuit diagram showing the connection between the positioning acquisition module and the reverse position acquisition module and the DC switch machine in this utility model.

[0039] Figure 5 This is a schematic diagram showing the installation position of the basic rail and switch rail position data acquisition module in this utility model.

[0040] Figure 6 This is a schematic diagram of the structure of the magnetostrictive sensor of this utility model.

[0041] Figure 7 This is a schematic diagram of the indoor and outdoor consistency monitoring system for railway turnouts according to this utility model. Detailed Implementation

[0042] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0043] The logic for determining the positioning and reversal of the turnout based on the tightness of the connection gap.

[0044] In a railway turnout system, the tightness between the switch rail and the stock rail directly determines the turnout's position (straight track) or reverse position (curved track).

[0045] Close contact gap: The maximum permissible gap between the switch rail and the stock rail, typically ≤4mm (5mm is allowed in some systems). If this threshold is exceeded, the switch position cannot be confirmed by the signaling system.

[0046] (1) Criteria for determining the position (direct stock)

[0047] The gap between the left or right switch rail and the corresponding base rail is ≤4mm.

[0048] (2) Criteria for determining reversal (bent strand)

[0049] The switch rail is closely fitted to the main rail on the opposite side: the gap between the switch rail and the main rail on the other side is ≤4mm.

[0050] The logic for determining turnout positioning and reversal based on the size of the gap.

[0051] In railway signaling systems, the size of the gap between the locking post and the indicator rod inside the switch machine is a key mechanical parameter that ensures the correct locking of the turnout and accurately transmits the position (straight) or reverse (curved) status.

[0052] Standard gap value: When the turnout is in the correct locked state (positioned or reversed), the gap between the notch of the indicator rod and the protrusion of the locking post should be 2mm ± 0.5mm (the specific value varies depending on the switch machine model, such as 2mm for ZD6 type switch machines).

[0053] (1) Positioning status (straight stock)

[0054] The notch on the indicator rod is aligned with the locking pin, with a gap of 2mm, to ensure stable mechanical locking.

[0055] (2) Reversed position (bent strand)

[0056] The notch on the other side of the indicator rod is aligned with the locking pin, and the gap is also maintained at 2mm.

[0057] Example 1

[0058] like Figure 1 As shown, this embodiment provides an outdoor position consistency monitoring device for railway turnouts, including:

[0059] The position indication contact status acquisition module includes a positioning acquisition module and a reverse position acquisition module; the positioning acquisition module is connected to the positioning indication contact of the switch machine and is used to acquire the on-state voltage signal and off-state voltage signal of the positioning indication contact; the reverse position acquisition module is connected to the reverse position indication contact of the switch machine and is used to acquire the on-state voltage signal and off-state voltage signal of the reverse position indication contact.

[0060] The first position determination module is connected to the position indicator contact status acquisition module and is used to output the outdoor position determination result of the first turnout based on the acquired on-state voltage signal and off-state voltage signal of the position indicator contact and the acquired on-state voltage signal and off-state voltage signal of the reverse position indicator contact.

[0061] The base rail and switch rail position data acquisition module includes a positioning close-fitting gap acquisition module and a reverse positioning close-fitting gap acquisition module. The positioning close-fitting gap acquisition module is used to acquire the gap between the base rail and the switch rail on one side, and the reverse positioning close-fitting gap acquisition module is used to acquire the gap between the base rail and the switch rail on the other side.

[0062] The second position determination module is connected to the base rail and switch rail position data acquisition module and is used to output the outdoor position determination result of the second turnout based on the gap between the base rail and switch rail on one side and the gap between the base rail and switch rail on the other side.

[0063] The gap image data acquisition module is used to acquire gap image data of the switch machine;

[0064] The third position determination module is connected to the gap image data acquisition module and is used to output the outdoor position determination result of the third turnout based on the acquired gap image data of the switch machine.

[0065] The integrated position determination module is connected to the first position determination module, the second position determination module and the third position determination module, and outputs the outdoor position determination result of the turnout based on the outdoor position determination results of the first turnout, the second turnout and the third turnout.

[0066] In this embodiment, the first position determination module, the second position determination module, the third position determination module, and the comprehensive position determination module can be implemented using a microcontroller, a microprocessor, or the like.

[0067] In this embodiment, the positioning acquisition module and the reverse position acquisition module at one end of the position indication contact status acquisition module are connected to the positioning and reverse position indication contacts of the outdoor turnout switch machine, and the other end outputs a specific voltage signal.

[0068] Each switch machine uses two modules: a positioning acquisition module and a reversing position acquisition module, which respectively acquire the fixed and reverse positions of the switch machine. When the switch is in the fixed position, the positioning acquisition module outputs the on-state voltage signal of the positioning indicator contact (referred to as the "fixed position on signal"), and the reversing position acquisition module outputs the off-state voltage signal of the reversing indicator contact (referred to as the "reversing position off signal"). When the switch is in the reverse position, the positioning acquisition module outputs the off-state voltage signal of the positioning indicator contact (referred to as the "fixed position off signal"), and the reversing position acquisition module outputs the on-state voltage signal of the reversing indicator contact (referred to as the "reversing position on signal"). The first position determination module receives both the fixed position on signal and the reversing position off signal simultaneously, determines the current outdoor switch position as fixed, and outputs the first outdoor switch position determination result as fixed. Conversely, if it receives both the fixed position off signal and the reversing position on signal simultaneously, determines the current outdoor switch position as reverse, and outputs the first outdoor switch position determination result as reverse.

[0069] In some exemplary embodiments, both the positioning acquisition module and the reversing acquisition module include an isolated power supply module and an isolated acquisition module; the isolated power supply module includes an IF1205S-1WR3 power chip to provide a 5V voltage input to the isolated acquisition module; the isolated acquisition module includes a PS2801 optocoupler, one end of which is connected to the switch machine as an acquisition input terminal, and the other end of which is connected as an acquisition output terminal.

[0070] Specifically, such as Figure 2 As shown, the isolated power supply module also includes a fuse F1, a Zener diode D1, capacitors C1 and C2, a resistor R6, and an indicator light D5. The VIN pin of the IF1205S-1WR3 power chip is connected to a 12V voltage through the fuse F1, and the GND pin is connected to GND. The Zener diode D1 and the capacitor C1 are connected in parallel between the VIN pin and the GND pin of the IF1205S-1WR3 power chip, respectively. The VO+ pin of the IF1205S-1WR3 power chip is connected to GND0 through the resistor R6 and the indicator light D5, and the 0V pin is grounded to GND0. The capacitor C2 is connected in parallel between the VO+ pin and the 0V pin of the IF1205S-1WR3 power chip. The VO+ pin of the IF1205S-1WR3 power chip outputs a 5V voltage, and the VIN pin outputs a 12V voltage.

[0071] The isolation acquisition module also includes resistors R1-R5, transistor Q1, indicator light D3, diode D4, and Zener diode D2;

[0072] The first input pin of the PS2801 optocoupler is connected to the emitter of transistor Q1. The collector of transistor Q1 is connected to a 5V voltage. Resistor R1 is connected between the collector and base of transistor Q1. The base of transistor Q1 is connected to the switch machine as a data acquisition input terminal through resistor R3. The second input pin of the PS2801 optocoupler is connected to GND0 through resistor R4 and indicator light D3. The third input pin of the PS2801 optocoupler is connected to GND through resistor R5 and diode D4. The fourth input pin of the PS2801 optocoupler serves as a data acquisition output terminal, connected to a 12V voltage through resistor R2, and also connected to GND through Zener diode D2.

[0073] In some exemplary embodiments, outdoor turnout switch machines can be classified into two main categories based on their power supply type: AC switch machines and DC switch machines. For example... Figure 3 The diagram shows the turnout control circuit of an AC switch machine. The fixed and reverse positions of the AC switch machine are indicated by contacts 31-32 and 21-22, respectively. Figure 4 The diagram shows the turnout control circuit of a DC switch machine. The fixed and reverse position indicators for the DC switch machine are 15-16 and 45-46, respectively.

[0074] In this embodiment, each switch machine uses two modules: a positioning close-fitting gap acquisition module and a reverse positioning close-fitting gap acquisition module, to acquire the fixed and reverse positions of the switch machine, respectively. When the switch is in the fixed position, the positioning close-fitting gap acquisition module outputs a signal with a close-fitting gap ≤ 4mm (referred to as: fixed position close-fitting signal), and the reverse positioning close-fitting gap acquisition module outputs a signal with a close-fitting gap > 4mm (referred to as: reverse position rejection signal). When the switch is in the reverse position, the positioning close-fitting gap acquisition module outputs a signal with a close-fitting gap > 4mm (referred to as: fixed position rejection signal), and the reverse positioning close-fitting gap acquisition module outputs a signal with a close-fitting gap ≤ 4mm (referred to as: reverse position close-fitting signal). The second position determination module receives both the fixed position close-fitting signal and the reverse position rejection signal, determines the current outdoor switch position as fixed, and outputs the second switch outdoor position determination result as fixed. Simultaneously receiving both the fixed position rejection signal and the reverse position close-fitting signal, determines the current outdoor switch position as reverse, and outputs the second switch outdoor position determination result as reverse.

[0075] In some exemplary embodiments, such as Figure 5 As shown, both the positioning tight-fit gap acquisition module 1 and the reverse positioning tight-fit gap acquisition module 2 include a magnetostrictive sensor and a data output interface designed with a 485 interface; the magnetostrictive sensor is used to detect the gap distance between the base rail and the switch rail; the magnetostrictive sensor is connected to the data output interface to output the detected gap distance between the base rail and the switch rail.

[0076] In some exemplary embodiments, such as Figure 6 As shown, the magnetostrictive sensor performs detection based on the dual magnetostrictive induction output principle, including a measurement module 3 and a magnetic induction element 4 as the induction module;

[0077] The magnetic sensing element 4 includes a magnetic sensing element A fixed on the base rail and serving as a non-contact magnetic ring, and a magnetic sensing element B fixed on the tip rail and serving as a movable magnetic ring. The magnetic sensing elements A and B are used to generate a magnetic field and act on the sensing section position of the measurement module.

[0078] The measurement module 3 is fixed at the sleeper or rail base at the monitored location and includes a sensing section 31, a data acquisition section 32, an installation section 33, and a cable 34.

[0079] The sensing section 31 is used to sense the magnetic field signals generated by the magnetic sensing element A and the magnetic sensing element B;

[0080] The acquisition segment 32 is electrically connected to the sensing segment 31 and is used to acquire the relative position change signal of the AB magnetic field signal sensed by the sensing segment 31 on the sensing segment 31.

[0081] The installation section 33 is used to install the measuring module 3 at the sleeper or rail base at the monitored location;

[0082] The cable 34 is electrically connected to the acquisition section 33 and is used to input the electrical signal required for detection and output the acquisition signal; specifically, the input and output ends of the cable adopt a 5-pin aviation plug 5.

[0083] In this invention, the measuring module 3 is installed at the sleeper or rail base at the monitored location, and the measuring module 3 is a non-contact measuring device. Magnetic induction element A is installed on the main rail, stationary relative to the main rail and moving with it. Magnetic induction element B is installed on the switch rail, stationary relative to the switch rail and moving with it. The relative position change of the main rail and the switch rail is converted into a relative position change of magnetic induction element A and magnetic induction element B.

[0084] It should be noted that those skilled in the art know how to design the acquisition segment to acquire the relative position change signal of the AB magnetic field signal, and will not elaborate further here.

[0085] In this embodiment, the gap image data acquisition module acquires gap images inside the switch machine. Each time, images of both the fixed and reverse positions are fully acquired, and these two images are carefully compared and analyzed to accurately obtain the gap size data between the locking post and the indicator rod inside the switch machine at the current position. The third position determination module determines the outdoor position of the turnout based on this gap size data and outputs the third turnout outdoor position determination result, i.e., whether the outdoor turnout position is fixed or reversed.

[0086] It should be noted that there are currently various gap image data acquisition modules that can monitor gaps within switch machines. For example, the Chinese utility model patent with announcement number CN222452232U and announcement date of February 11, 2025 discloses a gap monitoring device for a ZY7S type double-crossing turnout switch machine, and the Chinese utility model patent with announcement number CN217978019U and announcement date of December 6, 2022 discloses a gap monitoring device for a ZY7S type double-crossing turnout switch machine. The specific gap image data acquisition modules will not be described in detail here.

[0087] In this embodiment, the comprehensive position determination module outputs the outdoor position determination result of the turnout based on the outdoor position determination results of the first turnout, the second turnout, and the third turnout as follows:

[0088] ①When the determination results of the first turnout outdoor position, the second turnout outdoor position, and the third turnout outdoor position are all the same, the determination result of any one of them shall be taken as the determination result of the turnout outdoor position.

[0089] ② When any one of the following three results is unknown, and the other two results are the same, the result of the other two results shall be taken as the result of the outdoor position determination of the turnout.

[0090] ③ When any two of the following results are unknown: the outdoor position determination result of the first turnout, the outdoor position determination result of the second turnout, and the outdoor position determination result of the third turnout, the output outdoor position determination result of the turnout is unknown.

[0091] ④ If any two of the following results contradict each other, the result of determining the outdoor position of the first turnout, the result of determining the outdoor position of the second turnout, and the result of determining the outdoor position of the third turnout will be output as unknown.

[0092] The specific decision-making logic is shown in the table below:

[0093] First switch outdoor position determination result Second switch outdoor position determination result Third switch outdoor position determination result Switch outdoor position determination result Positioning Positioning Positioning Positioning Counter-positioning Counter-positioning Counter-positioning Counter-positioning Positioning Positioning Positioning Counter-positioning Counter-positioning Counter-positioning Positioning Positioning Positioning Counter-positioning Counter-positioning Counter-positioning Positioning Positioning Positioning Counter-positioning Counter-positioning Counter-positioning Positioning Counter-positioning Positioning Counter-positioning Positioning Counter-positioning Counter-positioning Positioning Counter-positioning Positioning Figure 7

[0094] It should be noted that the result of determining the outdoor position of the first, second, and third turnouts as unknown refers to the fact that...

[0095] Example 2

[0096] This embodiment provides a railway turnout indoor-outdoor consistency monitoring system, such as... ​ As shown, it includes:

[0097] The outdoor centralized monitoring equipment is used to output the outdoor position determination results of the turnout, and the railway turnout outdoor position consistency monitoring equipment described above is used.

[0098] Indoor centralized monitoring equipment is used to output the indoor position determination results of turnouts;

[0099] The centralized monitoring equipment is connected to both outdoor and indoor centralized monitoring equipment to compare the consistency between the received outdoor and indoor turnout position determination results and to output an alarm when the indoor and outdoor turnout positions are inconsistent.

[0100] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. An outdoor location acquisition device for railway turnouts, characterized in that, include: The position indication contact status acquisition module includes a positioning acquisition module and a reverse position acquisition module; the positioning acquisition module is connected to the positioning indication contact of the switch machine and is used to acquire the on-state voltage signal and off-state voltage signal of the positioning indication contact; the reverse position acquisition module is connected to the reverse position indication contact of the switch machine and is used to acquire the on-state voltage signal and off-state voltage signal of the reverse position indication contact. The base rail and switch rail position data acquisition module includes a positioning close-fitting gap acquisition module and a reverse positioning close-fitting gap acquisition module. The positioning close-fitting gap acquisition module is used to acquire the gap between the base rail and the switch rail on one side, and the reverse positioning close-fitting gap acquisition module is used to acquire the gap between the base rail and the switch rail on the other side. The gap image data acquisition module is used to acquire gap image data of the switch machine.

2. The railway turnout outdoor position acquisition device according to claim 1, characterized in that: Both the positioning acquisition module and the reverse positioning acquisition module include an isolated power supply module and an isolated acquisition module; The isolated power supply module includes an IF1205S-1WR3 power chip, which is used to provide a 5V voltage input to the isolated acquisition module. The isolation acquisition module includes a PS2801 optocoupler, one end of which is connected to the switch machine as an acquisition input terminal, and the other end as an acquisition output terminal.

3. The railway turnout outdoor position acquisition device according to claim 1 or 2, characterized in that: Both the positioning tight-fit gap acquisition module and the reverse positioning tight-fit gap acquisition module include a magnetostrictive sensor and a data output interface designed with a 485 interface. The magnetostrictive sensor is used to detect the gap distance between the base rail and the switch rail; The magnetostrictive sensor is connected to the data output interface to output the detected gap distance between the base rail and the switch rail.

4. The railway turnout outdoor position acquisition device according to claim 3, characterized in that: The magnetostrictive sensor is based on the dual magnetostrictive induction output principle for detection and includes a measurement module and a magnetic induction element as the induction module. The magnetic sensing element includes a magnetic sensing element A fixed on the base rail and serving as a non-contact magnetic ring, and a magnetic sensing element B fixed on the tip rail and serving as a movable magnetic ring. The magnetic sensing elements A and B are used to generate a magnetic field and act on the sensing section position of the measurement module. The measurement module is fixed at the sleeper or rail base at the monitored location and includes a sensing section, a data acquisition section, an installation section, and cables. The sensing segment is used to sense the magnetic field signals generated by the magnetic sensing element A and the magnetic sensing element B; The acquisition section is electrically connected to the sensing section and is used to acquire the relative position change signal of the AB magnetic field signal sensed by the sensing section on the sensing section. The installation section is used to install the measuring module at the sleeper or rail base at the monitored location; The cable is electrically connected to the acquisition section and is used to input the electrical signal required for detection and output the acquisition signal.

5. An outdoor position consistency monitoring device for railway turnouts, characterized in that, include: The railway turnout outdoor position acquisition device according to any one of claims 1-4; The first position determination module is connected to the position indicator contact status acquisition module and is used to output the outdoor position determination result of the first turnout based on the acquired on-state voltage signal and off-state voltage signal of the position indicator contact and the acquired on-state voltage signal and off-state voltage signal of the reverse position indicator contact. The second position determination module is connected to the base rail and switch rail position data acquisition module and is used to output the outdoor position determination result of the second turnout based on the gap between the base rail and switch rail on one side and the gap between the base rail and switch rail on the other side. The third position determination module is connected to the gap image data acquisition module and is used to output the outdoor position determination result of the third turnout based on the acquired gap image data of the switch machine. The integrated position determination module is connected to the first position determination module, the second position determination module and the third position determination module, and outputs the outdoor position determination result of the turnout based on the outdoor position determination results of the first turnout, the second turnout and the third turnout.

6. A railway turnout indoor-outdoor consistency monitoring system, characterized in that, include: An outdoor centralized monitoring device is used to output the outdoor position determination result of the turnout, and the railway turnout outdoor position consistency monitoring device described in claim 4 is used. Indoor centralized monitoring equipment is used to output the indoor position determination results of turnouts; The centralized monitoring equipment is connected to both outdoor and indoor centralized monitoring equipment to compare the consistency between the received outdoor and indoor turnout position determination results and to output an alarm when the indoor and outdoor turnout positions are inconsistent.

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