Train approaching safety protection alarm system and method, electronic equipment and storage medium

Abstract

The invention discloses a train approaching safety protection alarm system and method, electronic equipment and a storage medium. The train approaching safety protection alarm system comprises a host, a plurality of sensing devices and at least one signal receiving terminal, the host comprises a first processing module, a first communication module and a first power supply module; the sensing device comprises a second processing module, a second communication module, a second power supply module and an electromagnetic wheel shaft sensor arranged on a line steel rail; when the train presses the electromagnetic wheel axle sensor on the line steel rail, the electromagnetic wheel axle sensor is used for generating a train approach voltage signal and sending the train approach voltage signal to the second processing module; and the signal receiving terminal comprises a third processing module, a third communication module and a third power supply module. According to the invention, the approach monitoring and early warning mode of the train in the construction section can be comprehensively improved, the monitoring operation cost is obviously reduced, the driving safety is improved, the error rate of sending is reduced, and the working efficiency of workers is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of train safety protection, and relates to a safety protection alarm system, and in particular to a train approaching safety protection alarm system, method, electronic equipment and storage medium. Background Art

[0002] The train approaching safety protection alarm system is a technical equipment to ensure the driving safety and personal safety of railway line operators. The research on train approaching safety protection alarm devices was carried out in many railway bureaus across the country as early as the 1990s, and various alarm devices have been launched.

[0003] However, the existing train approach alarm system has low detection accuracy and is prone to send alarms to the wrong objects, reducing the work efficiency of staff.

[0004] In view of this, there is an urgent need to design a new train approaching alarm system so as to overcome at least part of the above-mentioned defects of the existing train approaching alarm system. Summary of the invention

[0005] The present invention provides a train approach safety protection alarm system, method, electronic equipment and storage medium, which can comprehensively enhance and improve the accuracy of train approach monitoring and early warning in construction sections, significantly reduce monitoring operation costs, improve driving safety, reduce the error rate of transmission, and improve the work efficiency of staff.

[0006] To solve the above technical problem, according to one aspect of the present invention, the following technical solution is adopted:

[0007] A train approach safety protection alarm system, the train approach safety protection alarm system comprising: a host, a plurality of sensor devices and at least one signal receiving terminal; the host is respectively connected to each sensor device and each signal receiving terminal;

[0008] The host comprises a first processing module, a first communication module and a first power module; the first processing module receives and sends data through the first communication module; the first power module is respectively connected to the first processing module and the first communication module to provide them with the power required for operation; the first processing module sends an alarm signal to the set signal receiving terminal when receiving the train approach signal sent by the set sensor device;

[0009] The sensing device includes a second processing module, a second communication module, a second power module and an electromagnetic wheel axle sensor arranged on the track rail; when the train presses on the electromagnetic wheel axle sensor on the track rail, the electromagnetic wheel axle sensor is used to generate a train approaching voltage signal and send it to the second processing module; the second processing module sends the setting information to the host through the second communication module; the second power module is respectively connected to the electromagnetic wheel axle sensor, the second processing module, and the second communication module to provide them with the electric energy required for work;

[0010] The signal receiving terminal includes a third processing module, a third communication module and a third power supply module; the third processing module receives the alarm signal through the third communication module; the third power supply module is respectively connected to the third processing module and the third communication module to provide them with the electrical energy required for their work.

[0011] As an implementation mode of the present invention, the signal receiving terminal further includes a positioning module, and the positioning module is used to obtain the location information of the signal receiving terminal. The positioning module is connected to the third processing module and sends the obtained location information to the third processing module.

[0012] As an embodiment of the present invention, the host includes a dangerous area terminal acquisition module, which is used to obtain the signal receiving terminal within a set area of ​​the train and located in the direction of train travel according to the direction and position of the train and the specific position of each signal receiving terminal, and send an alarm signal to the signal receiving terminal.

[0013] As an embodiment of the present invention, the train approach safety protection alarm system further includes a server, and the server is respectively connected to the host and each signal receiving terminal; or, the host serves as the server.

[0014] As an embodiment of the present invention, the host includes a train speed acquisition module; the train speed acquisition module is used to acquire the train speed. At least two axle counters are set on the line rails, and the distance between the axle counters is known; when a train passes, each axle counter will record the axle and time of the train; by comparing the time difference when the train passes through the two axle counters and the distance between the two axle counters, the average speed of the train can be calculated.

[0015] Get the speed of the train, the required or traveled distance s and the time t used to pass this distance; where s is the distance between axle counter A and axle counter B, which is artificially set to a known value; collect and obtain the time t when the train passes AB respectively a ,t b , these two times t a ,t bThe absolute value of the difference is the time required for the train to pass AB: t = |t a -t b |; where t is the time taken to pass the distance s; t a is the time count for passing through point A; t b is the time count for passing through point B; t a t b The absolute value of is at time t;

[0016] Average speed calculation formula: Substituting t into the above formula, we can get: Among them, v is the average speed of the train that needs to be calculated.

[0017] The host comprises an external power supply voltage acquisition module for acquiring an external power supply voltage;

[0018] In general, the external power supply is greater than the reference source of the analog-to-digital conversion module in the system, so a voltage divider circuit is used in the circuit to perform voltage division before analog-to-digital conversion.

[0019] The principle of circuit voltage division is mainly based on Ohm's law and the characteristics of series circuits; in a series circuit, the currents in each resistor are equal, and the sum of the voltages across each resistor is equal to the total voltage of the circuit; this means that the voltage across each resistor is less than the total voltage of the circuit, so the series resistors play a role in voltage division;

[0020] Specifically, the formula for the voltage division principle is Where R1 and R2 represent the resistance of the two series resistors, and U1 and U2 represent the voltage across the two resistors respectively; this formula shows that the voltage distribution between the resistors is proportional to their resistance; that is, the resistor with a larger resistance will bear a larger voltage, while the resistor with a smaller resistance will bear a smaller voltage;

[0021] A voltage divider circuit is a circuit designed using this principle, which is used to divide the power supply voltage into two parts in a certain ratio; this circuit is usually composed of one or more resistors, and the required voltage distribution can be achieved by reasonably selecting the resistance value of the resistor.

[0022] The basic principle of analog-to-digital conversion is to convert continuous analog signals (such as voltage, temperature, etc.) into discrete digital signals. This involves sampling, quantization, and encoding of analog signals. Sampling is to select some discrete points in time of the analog signal, and quantization is to map the values ​​of these sampling points to finite digital values. Finally, these digital values ​​are converted into binary form through encoding; the method is as follows:

[0023] Calculate the voltage value U1 within the reference source range;

[0024] By the formula:

[0025]

[0026] Convert to:

[0027]

[0028] Among them, U 1 is the measurable voltage within the reference source range; U ref is the reference source; X ref The full-scale value of the number of bits measured for the analog-to-digital conversion module;

[0029] Then, the resistor voltage division calculation formula is derived by deriving the equal current through the series resistors.

[0030]

[0031] Convert to:

[0032]

[0033] Among them, R 1 , R 2 The resistance value of the series resistor to achieve voltage division; U pow is the external power supply voltage value;

[0034] Substituting U1 into the above formula, we get:

[0035]

[0036] Among them, U pow is the external voltage, R 1 is the resistance of the measuring end, R 2 is the resistance of the voltage divider, U F is the reference voltage, X F is the full-scale value of the measurement digit, x ad It is the output value of the analog-to-digital module.

[0037] The host includes a precise safety control alarm device, which implements the logic of a 12VDC (direct current) relay controlling a 220VAC (alternating current) alarm device, mainly involving the application of electrical control and relays; the following is the specific implementation logic:

[0038] Relay selection: Choose a suitable 12VDC relay, make sure it can withstand the voltage of 220VAC and has sufficient contact capacity to control the circuit of the alarm device;

[0039] Power supply configuration: Provide a stable 12VDC power supply for the relay and ensure the quality and stability of the power supply to avoid malfunction or damage of the relay due to power supply problems;

[0040] Alarm device connection: Connect the power supply line of the alarm device to the normally open or normally closed contact of the relay. When the relay is activated, the contact will close or open, thereby controlling the power supply of the alarm device;

[0041] Input signal detection: Detect the conditions that need to trigger the alarm through some means (such as sensors, switches or external signals). When the conditions are met, a trigger signal is generated;

[0042] Signal conversion and amplification: If the trigger signal is not strong enough to drive the relay directly, signal conversion and amplification may be required; for example, using a signal conversion circuit to convert the trigger signal into a signal suitable for driving a relay, or using an amplifier to increase the strength of the signal;

[0043] Relay drive: Apply the processed trigger signal to the control end (coil) of the relay to make the relay operate. When the relay coil is energized, the contacts will operate in the preset mode (normally open or normally closed);

[0044] Alarm device activation: The action of the relay contacts changes the power state of the alarm device, thereby triggering the alarm device to emit sound, light or other forms of alarm signals;

[0045] Electrical isolation: Ensure electrical isolation between the relay control circuit and the alarm device power circuit to prevent current from interfering with each other or causing safety hazards;

[0046] Overload protection: An overload protection device is installed in the power supply circuit of the alarm device to prevent equipment damage or fire risk caused by short circuit or overload;

[0047] Fault detection and indication: Fault detection circuits can be added to monitor the working status of relays and alarm devices. When a fault occurs, a fault indication is given through indicator lights or other means to facilitate timely maintenance and processing;

[0048] Relay principle: When the control power is turned on, the current flows through the coil, and the coil generates magnetic lines of force in the iron core according to the right-hand screw rule, sucking down the armature made of ferromagnetic material until the air gap is equal to zero; driven by the armature, the normally open contact of the relay is closed, and the normally closed switch is opened, thus completing the closing process of the relay; when the control power is disconnected, the coil loses power, the magnetic lines of force in the core disappear instantly, the reaction spring pulls the armature back to its original position, the normally closed contact resumes conduction, and the open contact also resumes the open state; Ampere's law points out that there is a quantitative relationship between the total magnetic field strength (magnetic induction strength) passing through a closed circuit and the current passing through the circuit;

[0049]

[0050] in, It represents the loop integral of the magnetic field intensity B along the path in the closed loop, I represents the current returning through the closed loop, μ 0 is the magnetic permeability of a vacuum.

[0051] The host includes a data transmission module, which can ensure that the data transmission distance is long and stable and reliable. The data communication of the trackside equipment adopts the RS485 communication interface; RS485 is a serial communication protocol, also known as EIA485 or TIA485; it is a physical layer communication protocol working under the RS485 standard, which can realize long-distance, high-speed and reliable data communication between multiple devices; RS485 adopts differential signal transmission, that is, sending data and receiving data are transmitted separately through two wires; one of the wires is A line and the other is B line, and the level difference between them represents different binary values; when the potential of A line is higher than that of B line, it represents binary 0; when the potential of A line is lower than that of B line, it represents binary 1.

[0052] Multi-point communication capability: The RS485 interface supports multiple devices to communicate on the same bus, which means that two-way communication can be carried out through one master device with multiple slave devices, which is very important for systems that require multiple devices to work together.

[0053] Long-distance transmission: RS485 interface can transmit data reliably over long distances, up to 1200 meters, which makes it have significant advantages in applications that require long-distance data transmission, such as building automation systems and remote monitoring equipment.

[0054] High transmission rate: RS485 supports high data transmission rates, up to 10Mbps, which is critical for applications that require fast transmission of large amounts of data, such as industrial control systems and data acquisition equipment.

[0055] Good anti-interference ability: The RS485 interface adopts differential signal transmission, which can effectively resist electromagnetic interference, noise interference and interference signals in the environment, ensuring the stability and reliability of data transmission.

[0056] Flexibility and scalability: RS485 interface can be flexibly configured as half-duplex or full-duplex mode, and can be interconnected with other serial interface standards (such as RS232, RS422) by using RS485 converter. This flexibility and scalability make RS485 a universal serial communication solution.

[0057] The host includes a train passing detection module, and sensor equipment is installed at key positions of the railway track. These sensors can accurately and in real time capture key information such as the position, speed, state, acceleration, etc. of the train during its operation, and judge the direction of the train's passing according to the order of information collected by the sensor, so as to determine valid information. The specific confirmation formula is to set the initial state of the sensor FB and mark it as "pending confirmation"; FB sends a confirmation request and waits for the confirmation of FE; FE receives and confirms: verification is performed; if the verification is passed, the FE state is marked as AE; otherwise, FE sends feedback to FB and requires reconfirmation; FB adjusts according to the feedback: if FB receives feedback from FE, FB adjusts and repeats the steps; otherwise, FB waits for the final confirmation of FE; FE finally confirms: after AE completes the confirmation, it notifies FB, and the FB state is marked as AB; complete two-way confirmation: AB and AE both confirm that there is no error; complete two-way confirmation, three confirmations in total, and it is determined as the final confirmation RS;

[0058] The specific confirmation formula is RS=(FB->FE, FE->AE, AE->FB, FB->AB)*3, where RS is the final confirmation status and -> is the derivation process.

[0059] The host includes a train positioning module, and six groups of sensor devices are installed at key positions of the railway track. Each group of sensor devices is positioned as a collection point; the collection points at each position are grouped and numbered, and U1, U3, and U5 are specified as the uplink collection point monitoring intervals, and D2, D4, and D6 are specified as the downlink collection point monitoring intervals. The system analyzes whether a single collection point triggers the system-set threshold and performs train group positioning. The following is a train positioning method.

[0060] First, define the up and down matrices [U1, U3, U5], [D2, D4, D6] to determine which group of matrices to enter according to the information of the collection points. Each group of matrices has its own judgment process. The progress tracking and up and down data confirmation methods are used to determine the train positioning. The up and down progress [E1, E2], E1 is up, E2 is down, and the track pressing status [S1, S2, S3, S4, S5, S6] each corresponds to the status of 6 collection points; according to the S1-S6 status bit is 1, to update the progress bit E1 value; such as S1 status bit is 1, E1 progress bit is 1, when S3 status is progress 1, E1 progress bit is 2, only when the specified status bit changes, the progress bit E1 is updated, so that the entire process of the train moving forward can be well controlled and its process bit is recorded; the process of status bit and progress is listed below;

[0061] Trains enter from progress position E1[0] to E2[1];

[0062] The status bit can only have two states: S1[1,0,0], S1[0,0,1], the train enters from U1, or the train enters from U5;

[0063] The train from progress position E1[1] to E2[2] advances to the arrival point;

[0064] Status bit S1[0,1,0] The train arrives at point U3;

[0065] Trains from progress position E1[2] to E2[3] depart;

[0066] Status bits S1[1,0,0], S1[0,0,1] Train leaves from U1, Train leaves from U5;

[0067] Progress bits E1[3] to E2[4] are reset;

[0068] Status bits S1[0,0,0]U1, U3, U5, E1, reset.

[0069] The host includes a train alarm module. According to the E1 progress bit above, the direction and position of the train can be known. According to the value of the E1 progress bit, the ALM alarm bit state can also be calculated. When the train enters from U1 or U5, the progress bit changes from E1[0] to E1[1], and the alarm bit is pulled low. When the train arrives at U3, the progress bit is E1[2], and the alarm bit ALM is reset. The bit calculation formula is: RS=E1-1>1; where RS is the alarm state and E1 is the progress bit.

[0070] In reality, there may be false triggering leading to progress position errors. In this case, it is necessary to introduce the OPP of the vehicle coming from the opposite direction to control it. When the OPP time caused by U1 or U5 is less than 6.5 minutes, cancel the state of U1 or U5;

[0071] The specific calculation formula is: RU=(OPP<6.5)&&((U1|U5)==1); among them, RU is the reverse direction state, and OPP is the time for vehicles coming from the reverse direction.

[0072] The host includes a train clearing module. If the status bits U1, U3, and U5 are 1, it is necessary to wait for the CL clearing bit to reset the status bits, that is, when the status bits U1, U3, and U5 and the clearing bits CL1, CL3, and CL5 are all 1, the status bits U1, U3, and U5 are 0. The status bit calculation formula is: U1 =! ((U1&C1)>0); wherein U1 is the status bit and C1 is the clearing bit.

[0073] The host includes a train reset module. If a train enters the E1 progress position, the progress position changes from E1[0] to E1[1], and the timing will be started. If there is no change in the progress position for 3 and a half minutes, it will be forced to enter the reset mode. The progress position E1 is cleared to 0, and the reset formula is: RW=(E1-1>1)T>3.5M; where RW is reset and E1 is progress position.

[0074] The host includes an axis position detection sensor interface module, an intelligent electromagnetic switch control module, a precision power management module and a power intelligent management module;

[0075] The axial position detection sensor interface module includes at least one connection circuit, which includes a sixth diode D6, a first second capacitor C12, a third resistor R3, and a second fourth resistor R24;

[0076] The positive electrode of the sixth diode, the second end of the first second capacitor C12, and the second end of the third resistor R3 are grounded respectively, and the negative electrode of the sixth diode, the first end of the first second capacitor C12, and the first end of the third resistor R3 are connected to the second end of the second fourth resistor R24 ​​respectively; the first end of the second fourth resistor R24 ​​is connected to a port of the interface element J4.

[0077] The intelligent electromagnetic switch control module includes at least one electromagnetic switch control circuit, and the electromagnetic switch control circuit includes a third transistor Q3, a first AC electronic solid-state relay K1, a first zero diode D10, a first four diodes D14, a first nine capacitors C19, a first four resistors R14, a first five resistors R15, a first six resistors R16, a third two resistors R32, a third four resistors R34, and a third six resistors R36;

[0078] The emitter of the third transistor Q3 and the first end of the first six resistors R16 are grounded respectively; the base of the third transistor Q3 and the second end of the first six resistors R16 are connected to the first end of the third four resistors R34 respectively;

[0079] The collector of the third transistor Q3 is respectively connected to the second end of the first fourth resistor R14, the positive electrode of the first fourth diode D14, the fourth port of the first AC electronic solid-state relay K1, and the first end of the third second resistor R32;

[0080] The positive electrode of the first zero diode D10, the second end of the first nine capacitors C19, and the second end of the first five resistors R15 are grounded respectively; the negative electrode of the first zero diode D10, the first end of the first nine capacitors C19, and the first end of the first five resistors R15 are connected to the second end of the third two resistors R32 respectively;

[0081] The first end of the third six-resistor R36 is connected to the power supply voltage, and the second end of the third six-resistor R36 is respectively connected to the first end of the first four-resistor R14, the cathode of the first four-diode D14, and the third port of the first AC electronic solid-state relay K1.

[0082] The precision power management module includes a first chip LM1, a power management chip U2, a first second diode D12, a first third diode D13, a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, a first zero capacitor C10, a first first capacitor C11, a first sixth capacitor C16, a first seventh capacitor C17, a first eighth capacitor C18, a first inductor L1, a first third resistor R13, a second eighth resistor R28, a second ninth resistor R29, a third zero resistor R30, and a third first resistor R31;

[0083] The first end of the first zero capacitor C10 is respectively connected to the 12V power supply voltage, the first end of the first three resistors R13, and the IN pin of the power management chip U2; the second end of the first zero capacitor C10 is grounded; the second end of the first three resistors R13 is connected to the EN pin of the power management chip U2;

[0084] The BS pin of the power management chip U2 is connected to the first end of the first capacitor C17, and the second end of the first capacitor C17 is respectively connected to the SW pin of the power management chip U2, the first end of the first inductor L1, and the cathode of the first and second diodes D12;

[0085] The second end of the first inductor L1 is respectively connected to a 5V power supply voltage, a first end of a third resistor R31, a second end of a third resistor R30, a first end of a first capacitor C18, and a first end of a seventh capacitor C7;

[0086] The second end of the third-first resistor R31 is connected to the anode of the first-third diode D13, and the first end of the third-zero resistor R30 is respectively connected to the FB pin of the power management chip U2 and the first end of the second-ninth resistor R29; the cathode of the first-third diode D13, the second end of the first-eighth capacitor C18, the second end of the seventh capacitor C7, the second end of the second-ninth resistor R29, and the anode of the first-second diode D12 are respectively grounded;

[0087] The COMP pin of the power management chip U2 is connected to the first end of the first six capacitors C16, the second end of the first six capacitors C16 is connected to the first end of the second eight resistors R28, and the second end of the second eight resistors R28 is grounded; the GND pin of the power management chip U2 is grounded; the SS pin of the power management chip U2 is connected to the first end of the sixth capacitor C6, and the second end of the sixth capacitor C6 is grounded;

[0088] The IN pin of the first chip LM1 is connected to a 5V power supply voltage, and the OUT pin of the first chip LM1 is respectively connected to a 3.3V power supply voltage, a first end of the fifth capacitor C5, and a first end of the first capacitor C11; the GND pin of the first chip LM1, a second end of the fifth capacitor C5, and a second end of the first capacitor C11 are respectively grounded.

[0089] The power intelligent management module includes at least one power management circuit, and the power management circuit includes a second inductor L2, a first 04 capacitor C104, a first 05 capacitor C105, an eighty-fourth resistor R84, and an eighty-sixth resistor R86;

[0090] The second end of the second inductor L2 is respectively connected to the first end of the first zero-five capacitor C105, the first end of the eighth-fourth resistor R84, and the first end of the first zero-fourth capacitor C104; the second end of the eighth-fourth resistor R84 is respectively connected to the second end of the first zero-fourth capacitor C104 and the first end of the eighth-sixth resistor R86; the second end of the first zero-five capacitor C105 and the second end of the eighth-sixth resistor R86 are respectively grounded.

[0091] According to another aspect of the present invention, the following technical solution is adopted: an alarm method of the above-mentioned train approach safety protection alarm system, the alarm method comprising:

[0092] When the train presses on the electromagnetic wheel axle sensor on the track rail, the electromagnetic wheel axle sensor is used to generate a train approaching voltage signal and send it to the second processing module; the second processing module sends the setting information to the host through the second communication module;

[0093] The first processing module of the host sends an alarm signal to the set signal receiving terminal upon receiving the train approach signal sent by the set sensor device;

[0094] The third processing module of the signal receiving terminal receives the alarm signal through the third communication module.

[0095] As an implementation manner of the present invention, the alarm method further comprises:

[0096] The positioning module obtains the location information of the signal receiving terminal, and the positioning module sends the obtained location information to the third processing module;

[0097] The dangerous area terminal acquisition module obtains the signal receiving terminals within the set area of ​​the train and in the direction of the train's travel according to the train's direction and position, combined with the specific positions of each signal receiving terminal, and sends an alarm signal to them.

[0098] According to another aspect of the present invention, the following technical solution is adopted: an electronic device includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the above method when executing the computer program.

[0099] According to another aspect of the present invention, the following technical solution is adopted: a storage medium stores computer program instructions, and the computer program instructions implement the steps of the above method when executed by a processor.

[0100] The beneficial effects of the present invention are as follows: the train approach safety protection alarm system, method, electronic device and storage medium proposed in the present invention, combined with the latest technologies of artificial intelligence and digitization, with vehicle intelligent identification and automatic warning as the core, from the perspective of automatic train identification and real-time warning, using the current advanced wheelset collection, 4G communication, 5G communication and database technology, to establish an intelligent and digital railway construction section train approach intelligent warning system. The establishment of an intelligent warning system provides new technical means and a solid digital foundation for the safe operation and maintenance and intelligent management and control of existing railway construction. The present invention can comprehensively enhance and improve the construction section train approach monitoring and warning methods, significantly reduce monitoring operation costs, improve driving safety, reduce the error rate of transmission, and improve the work efficiency of staff; it has demonstration and promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0101] Figure 1 The figure is a schematic diagram of the composition of a train approach safety protection alarm system in one embodiment of the present invention.

[0102] Figure 2 This is a circuit diagram of an axial position detection sensor interface module in one embodiment of the present invention;

[0103] Figure 3 A circuit diagram of an intelligent electromagnetic switch control module in one embodiment of the present invention;

[0104] Figure 4 Schematic diagram of a circuit of a precision power management module in one embodiment of the present invention;

[0105] Figure 5 A circuit diagram of a power intelligent management module in one embodiment of the present invention;

[0106] Figure 6 The present invention is a flow chart of a train approach safety protection alarm method in one embodiment of the present invention.

[0107] Figure 7 FIG. 4 is a schematic diagram of the composition of an electronic device in one embodiment of the present invention. DETAILED DESCRIPTION

[0108] The preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0109] In order to further understand the present invention, preferred embodiments of the present invention are described below in conjunction with examples. However, it should be understood that these descriptions are only for further illustrating the features and advantages of the present invention, rather than limiting the claims of the present invention.

[0110] The description in this section is only for several typical embodiments, and the present invention is not limited to the scope of the embodiments. The same or similar prior art means and some technical features in the embodiments are mutually replaced within the scope of the present invention.

[0111] The description of the steps in each embodiment in the specification is only for the convenience of explanation, and the implementation method of the present application is not limited by the order of implementation of the steps.

[0112] The term “connection” in the specification includes both direct connection and indirect connection.

[0113] The present invention discloses a train approach safety protection alarm system. Figure 1 This is a schematic diagram of the components of a train approach safety protection alarm system in one embodiment of the present invention; please refer to Figure 1 The train approach safety protection alarm system includes: a host 1, a plurality of sensor devices 2 and at least one signal receiving terminal 3; the host 1 is connected to each sensor device 2 and each signal receiving terminal 3 respectively.

[0114] The host 1 includes a first processing module 11, a first communication module 12 and a first power supply module 13; the first processing module 11 receives and sends data through the first communication module 12; the first power supply module 13 is respectively connected to the first processing module 11 and the first communication module 12 to provide them with the electrical energy required for their work; the first processing module 11 sends an alarm signal to the set signal receiving terminal 3 when receiving the train approach signal sent by the set sensor device.

[0115] The sensing device 2 includes a second processing module 21, a second communication module 22, a second power supply module 23 and an electromagnetic axle sensor 24 arranged on the line rail; when the train presses on the electromagnetic axle sensor 24 on the line rail, the electromagnetic axle sensor 24 is used to generate a train approaching voltage signal and send it to the second processing module 21; the second processing module 21 sends the setting information to the host through the second communication module 22; the second power supply module 23 is respectively connected to the electromagnetic axle sensor 24, the second processing module 21, and the second communication module 22 to provide them with the electrical energy required for their work.

[0116] The signal receiving terminal 3 includes a third processing module 31, a third communication module 32 and a third power supply module 33; the third processing module 31 receives the alarm signal through the third communication module 32; the third power supply module 33 is respectively connected to the third processing module 31 and the third communication module 32 to provide them with the electrical energy required for their work.

[0117] In one embodiment of the present invention, the signal receiving terminal 3 further includes a positioning module 34 , which is used to obtain the location information of the signal receiving terminal 3 . The positioning module 34 is connected to the third processing module 31 and sends the obtained location information to the third processing module 31 .

[0118] In one embodiment of the present invention, the host 1 includes a dangerous area terminal acquisition module 14, which is used to obtain the signal receiving terminal 3 within the set area of ​​the train and located in the direction of travel of the train according to the direction and position of the train and the specific position of each signal receiving terminal 3, and send an alarm signal to it.

[0119] In one embodiment of the present invention, the train approach safety protection alarm system further includes a server, and the server is respectively connected to the host and each signal receiving terminal; or, the host serves as the server.

[0120] The host 1 includes a train speed acquisition module 15; the train speed acquisition module 15 is used to acquire the train speed. At least two axle counters are set on the track, and the distance between the axle counters is known; when a train passes, each axle counter will record the axle and time of the train; by comparing the time difference when the train passes through the two axle counters and the distance between the two axle counters, the average speed of the train can be calculated.

[0121] Get the speed of the train, the required or traveled distance s and the time t used to pass this distance; where s is the distance between axle counter A and axle counter B, which is artificially set to a known value; collect and obtain the time t when the train passes AB respectively a ,t b , these two times t a ,t b The absolute value of the difference is the time required for the train to pass AB:

[0122] t=|t a -t b |

[0123] Where t is the time taken to travel the distance s; t a is the time count for passing through point A; t b is the time count for passing through point B; t a t bThe absolute value of is at time t;

[0124] Average speed calculation formula:

[0125]

[0126] Substituting t into the above formula, we can get:

[0127]

[0128] Among them, v is the average speed of the train that needs to be calculated.

[0129] The host 1 includes an external power supply voltage acquisition module 16 for acquiring the external power supply voltage; generally, the external power supply is greater than the reference source of the analog-to-digital conversion module in the system, so a voltage divider circuit is used in the circuit to perform voltage division processing before analog-to-digital conversion.

[0130] The principle of circuit voltage division is mainly based on Ohm's law and the characteristics of series circuits; in a series circuit, the currents in each resistor are equal, and the sum of the voltages across each resistor is equal to the total voltage of the circuit; this means that the voltage across each resistor is less than the total voltage of the circuit, so the series resistors play a role in voltage division;

[0131] Specifically, the formula for the voltage division principle is Where R1 and R2 represent the resistance of the two series resistors, and U1 and U2 represent the voltage across the two resistors respectively; this formula shows that the voltage distribution between the resistors is proportional to their resistance; that is, the resistor with a larger resistance will bear a larger voltage, while the resistor with a smaller resistance will bear a smaller voltage;

[0132] A voltage divider circuit is a circuit designed using this principle, which is used to divide the power supply voltage into two parts in a certain ratio; this circuit is usually composed of one or more resistors, and the required voltage distribution can be achieved by reasonably selecting the resistance value of the resistor.

[0133] The basic principle of analog-to-digital conversion is to convert continuous analog signals (such as voltage, temperature, etc.) into discrete digital signals. This involves sampling, quantization, and encoding of analog signals. Sampling is to select some discrete points in time of the analog signal, and quantization is to map the values ​​of these sampling points to finite digital values. Finally, these digital values ​​are converted into binary form through encoding; the method is as follows:

[0134] Calculate the voltage value U1 within the reference source range; by the formula: Convert to: Among them, U 1 is the measurable voltage within the reference source range; U ref is the reference source; X refThe full-scale value of the number of bits measured for the analog-to-digital conversion module;

[0135] Then, the resistor voltage division calculation formula is derived by deriving the equal current through the series resistor: Convert to: Among them, R 1 , R 2 The resistance value of the series resistor to achieve voltage division; U pow is the external power supply voltage value;

[0136] Substituting U1 into the above formula, we get: Among them, U pow is the external voltage, R 1 is the resistance of the measuring end, R 2 is the resistance of the voltage divider, U F is the reference voltage, X F is the full-scale value of the measurement digit, x ad It is the output value of the analog-to-digital module.

[0137] The host includes a precise safety control alarm device, which implements the logic of a 12VDC (direct current) relay controlling a 220VAC (alternating current) alarm device, mainly involving the application of electrical control and relays; the following is the specific implementation logic:

[0138] Relay selection: Choose a suitable 12VDC relay, make sure it can withstand the voltage of 220VAC and has sufficient contact capacity to control the circuit of the alarm device;

[0139] Power supply configuration: Provide a stable 12VDC power supply for the relay and ensure the quality and stability of the power supply to avoid malfunction or damage of the relay due to power supply problems;

[0140] Alarm device connection: Connect the power supply line of the alarm device to the normally open or normally closed contact of the relay. When the relay is activated, the contact will close or open, thereby controlling the power supply of the alarm device;

[0141] Input signal detection: Detect the conditions that need to trigger the alarm through some means (such as sensors, switches or external signals). When the conditions are met, a trigger signal is generated;

[0142] Signal conversion and amplification: If the trigger signal is not strong enough to drive the relay directly, signal conversion and amplification may be required; for example, using a signal conversion circuit to convert the trigger signal into a signal suitable for driving a relay, or using an amplifier to increase the strength of the signal;

[0143] Relay drive: Apply the processed trigger signal to the control end (coil) of the relay to make the relay operate. When the relay coil is energized, the contacts will operate in the preset mode (normally open or normally closed);

[0144] Alarm device activation: The action of the relay contacts changes the power state of the alarm device, thereby triggering the alarm device to emit sound, light or other forms of alarm signals;

[0145] Electrical isolation: Ensure electrical isolation between the relay control circuit and the alarm device power circuit to prevent current from interfering with each other or causing safety hazards;

[0146] Overload protection: An overload protection device is installed in the power supply circuit of the alarm device to prevent equipment damage or fire risk caused by short circuit or overload;

[0147] Fault detection and indication: Fault detection circuits can be added to monitor the working status of relays and alarm devices. When a fault occurs, a fault indication is given through indicator lights or other means to facilitate timely maintenance and processing;

[0148] Relay principle: When the control power is turned on, the current flows through the coil, and the coil generates magnetic lines of force in the iron core according to the right-hand screw rule, sucking the armature made of ferromagnetic material down until the air gap is equal to zero; driven by the armature, the normally open contact of the relay is closed, and the normally closed switch is opened, thus completing the closing process of the relay; when the control power is disconnected, the coil loses power, the magnetic lines of force in the core disappear instantly, the reaction spring pulls the armature back to its original position, the normally closed contact resumes conduction, and the open contact also resumes the open state; Ampere's law points out that there is a quantitative relationship between the total magnetic field strength (magnetic induction strength) passing through a closed circuit and the current passing through the circuit:

[0149]

[0150] in, It represents the loop integral of the magnetic field intensity B along the path in the closed loop, I represents the current returning through the closed loop, μ 0 is the magnetic permeability of a vacuum.

[0151] The host includes a data transmission module, which can ensure that the data transmission distance is long and stable and reliable. The data communication of the trackside equipment adopts the RS485 communication interface; RS485 is a serial communication protocol, also known as EIA485 or TIA485; it is a physical layer communication protocol working under the RS485 standard, which can realize long-distance, high-speed and reliable data communication between multiple devices; RS485 adopts differential signal transmission, that is, sending data and receiving data are transmitted separately through two wires; one of the wires is A line and the other is B line, and the level difference between them represents different binary values; when the potential of A line is higher than that of B line, it represents binary 0; when the potential of A line is lower than that of B line, it represents binary 1.

[0152] Multi-point communication capability: The RS485 interface supports multiple devices to communicate on the same bus, which means that two-way communication can be carried out through one master device with multiple slave devices, which is very important for systems that require multiple devices to work together.

[0153] Long-distance transmission: RS485 interface can transmit data reliably over long distances, up to 1200 meters, which makes it have significant advantages in applications that require long-distance data transmission, such as building automation systems and remote monitoring equipment.

[0154] High transmission rate: RS485 supports high data transmission rates, up to 10Mbps, which is critical for applications that require fast transmission of large amounts of data, such as industrial control systems and data acquisition equipment.

[0155] Good anti-interference ability: The RS485 interface adopts differential signal transmission, which can effectively resist electromagnetic interference, noise interference and interference signals in the environment, ensuring the stability and reliability of data transmission.

[0156] Flexibility and scalability: RS485 interface can be flexibly configured as half-duplex or full-duplex mode, and can be interconnected with other serial interface standards (such as RS232, RS422) by using RS485 converter. This flexibility and scalability make RS485 a universal serial communication solution.

[0157] The host 1 includes a train passing detection module 17, which is used to detect the passing of trains. Sensor equipment is installed at key positions of the railway track. These sensors can accurately and in real time capture the key information of the train during its operation, such as the position, speed, state, acceleration, etc., and judge the direction of the train's passing according to the order of information collected by the sensor, so as to determine the valid information. The specific confirmation formula is to set the initial state of the sensor FB and mark it as "pending confirmation"; FB sends a confirmation request and waits for the confirmation of FE; FE receives and confirms: verification is performed; if the verification is successful, the FE state is marked as AE; otherwise, FE sends feedback to FB and requires reconfirmation; FB adjusts according to the feedback: if FB receives feedback from FE, FB adjusts and repeats the steps; otherwise, FB waits for the final confirmation of FE; FE final confirmation: after AE completes the confirmation, it notifies FB, and the FB state is marked as AB; complete two-way confirmation: AB and AE both confirm correctly; complete two-way confirmation, three confirmations in total, and it is defined as the final confirmation RS;

[0158] The specific confirmation formula is RS=(FB->FE,FE->AE,AE->FB,FB->AB)*3; among them, RS is the final confirmation status, and -> is the derivation process.

[0159] The host 1 includes a train positioning module 18, which is used to locate the train position. Six groups of sensor devices are installed at key positions of the railway track, and each group of sensor devices is positioned as a collection point; the collection points at each position are grouped and numbered, and U1, U3, and U5 are specified as the uplink collection point monitoring intervals, and D2, D4, and D6 are specified as the downlink collection point monitoring intervals. The system analyzes whether a single collection point triggers the system set threshold and performs train group positioning. The following is a train positioning method.

[0160] First, define the up and down matrices [U1, U3, U5], [D2, D4, D6] to determine which group of matrices to enter according to the information of the collection points. Each group of matrices has its own judgment process. The progress tracking and up and down data confirmation methods are used to determine the train positioning. The up and down progress [E1, E2], E1 is up, E2 is down, and the track pressing status [S1, S2, S3, S4, S5, S6] each corresponds to the status of 6 collection points; according to the S1-S6 status bit is 1, to update the progress bit E1 value; such as S1 status bit is 1, E1 progress bit is 1, when S3 status is progress 1, E1 progress bit is 2, only when the specified status bit changes, the progress bit E1 is updated, so that the entire process of the train moving forward can be well controlled and its process bit is recorded; the process of status bit and progress is listed below;

[0161] Trains enter from progress position E1[0] to E2[1];

[0162] The status bit can only have two states: S1[1,0,0], S1[0,0,1], the train enters from U1, or the train enters from U5;

[0163] The train from progress position E1[1] to E2[2] advances to the arrival point;

[0164] Status bit S1[0,1,0] The train arrives at point U3;

[0165] Trains from progress position E1[2] to E2[3] depart;

[0166] Status bits S1[1,0,0], S1[0,0,1] Train leaves from U1, Train leaves from U5;

[0167] Progress bits E1[3] to E2[4] are reset;

[0168] Status bits S1[0,0,0]U1, U3, U5, E1, reset.

[0169] The host includes a train alarm module. According to the E1 progress bit above, the direction and position of the train can be known. According to the value of the E1 progress bit, the ALM alarm bit state can also be calculated. When the train enters from U1 or U5, the progress bit changes from E1[0] to E1[1], and the alarm bit is pulled low. When the train arrives at U3, the progress bit is E1[2], and the alarm bit ALM is reset. The bit calculation formula is: RS=E1-1>1; where RS is the alarm state and E1 is the progress bit.

[0170] In reality, there may be false triggering leading to progress position errors. In this case, it is necessary to introduce the OPP of the vehicle coming from the opposite direction to control it. When the OPP time caused by U1 or U5 is less than 6.5 minutes, cancel the state of U1 or U5;

[0171] The specific calculation formula is: RU=(OPP<6.5)&&((U1|U5)==1); among them, RU is the reverse direction state, and OPP is the time for vehicles coming from the reverse direction.

[0172] The host includes a train clearing module. If the status bits U1, U3, and U5 are 1, it is necessary to wait for the CL clearing bit to reset the status bits, that is, when the status bits U1, U3, and U5 and the clearing bits CL1, CL3, and CL5 are all 1, the status bits U1, U3, and U5 are 0. The status bit calculation formula is: U1 =! ((U1&C1)>0); wherein U1 is the status bit and C1 is the clearing bit.

[0173] The host includes a train reset module. If a train enters the E1 progress position, the progress position changes from E1[0] to E1[1], and the timing is started. If there is no change in the progress position for 3 and a half minutes (or other time), it is forced to enter reset; the progress position E1 is cleared to 0, and the reset formula is: RW=(E1-1>1)T>3.5M; where RW is reset and E1 is progress position.

[0174] The host comprises an axial position detection sensor interface module, an intelligent electromagnetic switch control module, a precision power management module and a power intelligent management module.

[0175] Figure 2 is a circuit diagram of an axial position detection sensor interface module in one embodiment of the present invention; please refer to Figure 2 In one embodiment of the present invention, the axial position detection sensor interface module includes at least one connection circuit, which includes a sixth diode D6, a first second capacitor C12, a third resistor R3, and a second fourth resistor R24. The anode of the sixth diode, the second end of the first second capacitor C12, and the second end of the third resistor R3 are grounded respectively, and the cathode of the sixth diode, the first end of the first second capacitor C12, and the first end of the third resistor R3 are connected to the second end of the second fourth resistor R24 ​​respectively; the first end of the second fourth resistor R24 ​​is connected to a port of the interface element J4.

[0176] Figure 3 This is a circuit diagram of an intelligent electromagnetic switch control module in one embodiment of the present invention; please refer to Figure 3 In one embodiment of the present invention, the intelligent electromagnetic switch control module includes at least one electromagnetic switch control circuit, and the electromagnetic switch control circuit includes a third transistor Q3, a first AC electronic solid-state relay K1, a first zero diode D10, a first four diodes D14, a first nine capacitors C19, a first four resistors R14, a first five resistors R15, a first six resistors R16, a third two resistors R32, a third four resistors R34, and a third six resistors R36.

[0177] The emitter of the third triode Q3 and the first end of the first six resistors R16 are grounded respectively; the base of the third triode Q3 and the second end of the first six resistors R16 are connected to the first end of the third four resistors R34 respectively. The collector of the third triode Q3 is connected to the second end of the first four resistors R14, the positive electrode of the first four diodes D14, the fourth port of the first AC electronic solid-state relay K1, and the first end of the third two resistors R32 respectively. The positive electrode of the first zero diode D10, the second end of the first nine capacitors C19, and the second end of the first five resistors R15 are grounded respectively; the negative electrode of the first zero diode D10, the first end of the first nine capacitors C19, and the first end of the first five resistors R15 are connected to the second end of the third two resistors R32 respectively. The first end of the third six resistors R36 is connected to the power supply voltage, and the second end of the third six resistors R36 is connected to the first end of the first four resistors R14, the negative electrode of the first four diodes D14, and the third port of the first AC electronic solid-state relay K1 respectively.

[0178] Figure 4 FIG. 1 is a circuit diagram of a precision power management module according to an embodiment of the present invention; please refer to FIG. Figure 4 In one embodiment of the present invention, the precision power management module includes a first chip LM1, a power management chip U2, a first second diode D12, a first third diode D13, a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, a first zero capacitor C10, a first first capacitor C11, a first sixth capacitor C16, a first seventh capacitor C17, a first eighth capacitor C18, a first inductor L1, a first third resistor R13, a second eighth resistor R28, a second ninth resistor R29, a third zero resistor R30, and a third first resistor R31;

[0179] The first end of the first zero capacitor C10 is respectively connected to the 12V power supply voltage, the first end of the first three resistors R13, and the IN pin of the power management chip U2; the second end of the first zero capacitor C10 is grounded; the second end of the first three resistors R13 is connected to the EN pin of the power management chip U2;

[0180] The BS pin of the power management chip U2 is connected to the first end of the first capacitor C17, and the second end of the first capacitor C17 is respectively connected to the SW pin of the power management chip U2, the first end of the first inductor L1, and the cathode of the first and second diodes D12;

[0181] The second end of the first inductor L1 is respectively connected to a 5V power supply voltage, a first end of a third resistor R31, a second end of a third resistor R30, a first end of a first capacitor C18, and a first end of a seventh capacitor C7;

[0182] The second end of the third-first resistor R31 is connected to the anode of the first-third diode D13, and the first end of the third-zero resistor R30 is respectively connected to the FB pin of the power management chip U2 and the first end of the second-ninth resistor R29; the cathode of the first-third diode D13, the second end of the first-eighth capacitor C18, the second end of the seventh capacitor C7, the second end of the second-ninth resistor R29, and the anode of the first-second diode D12 are respectively grounded;

[0183] The COMP pin of the power management chip U2 is connected to the first end of the first six capacitors C16, the second end of the first six capacitors C16 is connected to the first end of the second eight resistors R28, and the second end of the second eight resistors R28 is grounded; the GND pin of the power management chip U2 is grounded; the SS pin of the power management chip U2 is connected to the first end of the sixth capacitor C6, and the second end of the sixth capacitor C6 is grounded;

[0184] The IN pin of the first chip LM1 is connected to a 5V power supply voltage, and the OUT pin of the first chip LM1 is respectively connected to a 3.3V power supply voltage, a first end of the fifth capacitor C5, and a first end of the first capacitor C11; the GND pin of the first chip LM1, a second end of the fifth capacitor C5, and a second end of the first capacitor C11 are respectively grounded.

[0185] Figure 5 FIG. 1 is a circuit diagram of a power intelligent management module according to an embodiment of the present invention; please refer to FIG. Figure 5 In one embodiment of the present invention, the power intelligent management module includes at least one power management circuit, and the power management circuit includes a second inductor L2, a first 04 capacitor C104, a first 05 capacitor C105, an eighty-fourth resistor R84, and an eighty-sixth resistor R86;

[0186] The second end of the second inductor L2 is respectively connected to the first end of the first zero-five capacitor C105, the first end of the eighth-fourth resistor R84, and the first end of the first zero-fourth capacitor C104; the second end of the eighth-fourth resistor R84 is respectively connected to the second end of the first zero-fourth capacitor C104 and the first end of the eighth-sixth resistor R86; the second end of the first zero-five capacitor C105 and the second end of the eighth-sixth resistor R86 are respectively grounded.

[0187] In one use scenario of the present invention, the working principle of the train approach safety protection alarm system of the present invention is: when the train presses onto the electromagnetic axle sensor on the line rail, a train approach voltage signal is generated and sent to the sensor signal input circuit of the controller through the sensor cable. After the photoelectric isolation and comparison circuit, the incoming vehicle information is formed in the monostable circuit and input to the control host CPU. The sensor self-test information is also generated by the CPU and sent to the sensor through the expansion circuit. It returns to the CPU to determine whether a car is pressing in, and then sends it to the radio station to transmit voice information through the communication transmission cable. The receiving terminal sends a voice alarm sound to notify the on-site workers that a car is approaching, pay attention to safety, get off the road in time, and avoid the train.

[0188] The present invention also discloses an alarm method of the above train approach safety protection alarm system. Figure 6 This is a flow chart of a train approach safety protection alarm method in one embodiment of the present invention; please refer to Figure 6 , the alarm method comprises:

[0189] When the train presses on the electromagnetic wheel axle sensor on the track rail, the electromagnetic wheel axle sensor is used to generate a train approaching voltage signal and send it to the second processing module; the second processing module sends the setting information to the host through the second communication module;

[0190] The first processing module of the host sends an alarm signal to the set signal receiving terminal upon receiving the train approach signal sent by the set sensor device;

[0191] The third processing module of the signal receiving terminal receives the alarm signal through the third communication module.

[0192] In one embodiment of the present invention, the alarm method further comprises:

[0193] The positioning module obtains the location information of the signal receiving terminal, and the positioning module sends the obtained location information to the third processing module;

[0194] The dangerous area terminal acquisition module obtains the signal receiving terminals within the set area of ​​the train and in the direction of the train's travel according to the train's direction and position, combined with the specific positions of each signal receiving terminal, and sends an alarm signal to them.

[0195] The present invention also discloses an electronic device, Figure 7 FIG. 1 is a schematic diagram of the composition of an electronic device in an embodiment of the present invention; please refer to FIG. Figure 7At the hardware level, the electronic device includes a memory, a processor and at least one network interface; the processor may be a microprocessor, and the memory may include a memory, such as a random access memory (RAM), or a non-volatile memory, etc. Of course, the electronic device may also be provided with other hardware as required.

[0196] The processor, network interface and memory may be interconnected via an internal bus, which may be an ISA (Industry Standard Architecture) bus, a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus, etc. The bus may include an address bus, a data bus, a control bus, etc. The memory is used to store programs (which may include operating system programs and application programs); the program may include program code, which may include computer operation instructions. The memory may include internal memory and non-volatile memory, and provides instructions and data to the processor.

[0197] In one embodiment, the processor can read the corresponding program from the non-volatile memory into the memory and then run it; the processor can execute the program stored in the memory and is specifically used to perform the following operations (such as Figure 6 shown):

[0198] When the train presses on the electromagnetic wheel axle sensor on the track rail, the electromagnetic wheel axle sensor is used to generate a train approaching voltage signal and send it to the second processing module; the second processing module sends the setting information to the host through the second communication module;

[0199] The positioning module of the signal receiving terminal acquires the position information of the signal receiving terminal, and the positioning module sends the acquired position information to the third processing module of the signal receiving terminal; the signal receiving terminal sends the received position information to the host;

[0200] The terminal acquisition module in the dangerous area acquires the signal receiving terminal within the set area of ​​the train and in the direction of the train's travel according to the direction and position of the train and the specific position of each signal receiving terminal; the first processing module of the host sends an alarm signal to the set signal receiving terminal when receiving the train approach signal sent by the set sensor device;

[0201] The third processing module of the signal receiving terminal receives the alarm signal through the third communication module.

[0202] The present invention further discloses a storage medium having computer program instructions stored thereon, which, when executed by a processor, implements the following steps of the method of the present invention (eg Figure 6 shown):

[0203] When the train presses on the electromagnetic wheel axle sensor on the track rail, the electromagnetic wheel axle sensor is used to generate a train approaching voltage signal and send it to the second processing module; the second processing module sends the setting information to the host through the second communication module;

[0204] The positioning module of the signal receiving terminal acquires the position information of the signal receiving terminal, and the positioning module sends the acquired position information to the third processing module of the signal receiving terminal; the signal receiving terminal sends the received position information to the host;

[0205] The terminal acquisition module in the dangerous area acquires the signal receiving terminal within the set area of ​​the train and in the direction of the train's travel according to the direction and position of the train and the specific position of each signal receiving terminal; the first processing module of the host sends an alarm signal to the set signal receiving terminal when receiving the train approach signal sent by the set sensor device;

[0206] The third processing module of the signal receiving terminal receives the alarm signal through the third communication module.

[0207] In summary, the train approach safety protection alarm system, method, electronic device and storage medium proposed in the present invention, combined with the latest technologies of artificial intelligence and digitization, takes vehicle intelligent identification and automatic warning as the core, and from the perspective of automatic train identification and real-time warning, utilizes the current advanced wheelset collection, 4G communication, 5G communication and database technology to establish an intelligent and digital railway construction section train approach intelligent warning system. The establishment of an intelligent warning system provides new technical means and a solid digital foundation for the safe operation and maintenance and intelligent management and control of existing railway construction. The present invention can comprehensively enhance and improve the construction section train approach monitoring and warning methods, significantly reduce monitoring operation costs, improve driving safety, reduce the error rate of transmission, and improve the work efficiency of staff; it has demonstration and promotion value.

[0208] It should be noted that the present application can be implemented in software and / or a combination of software and hardware; for example, it can be implemented using an application-specific integrated circuit (ASIC), a general-purpose computer, or any other similar hardware device. In some embodiments, the software program of the present application can be executed by a processor to implement the above steps or functions. Similarly, the software program of the present application (including related data structures) can be stored in a computer-readable recording medium; for example, a RAM memory, a magnetic or optical drive or a floppy disk and the like. In addition, some steps or functions of the present application can be implemented in hardware; for example, as a circuit that cooperates with a processor to perform various steps or functions.

[0209] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0210] The description and application of the present invention here are illustrative, and it is not intended to limit the scope of the present invention to the above-mentioned embodiments. The effects or advantages involved in the embodiments may not be embodied in the embodiments due to interference from various factors, and the description of the effects or advantages is not used to limit the embodiments. The deformation and change of the embodiments disclosed here are possible, and the replacement of the embodiments and the various equivalent parts are well known to those of ordinary skill in the art. It should be clear to those skilled in the art that the present invention can be implemented in other forms, structures, arrangements, proportions, and with other components, materials and parts without departing from the spirit or essential features of the present invention. Other deformations and changes can be made to the embodiments disclosed here without departing from the scope and spirit of the present invention.

Claims

1. A train approach safety protection alarm system, characterized in that: The train approach safety protection alarm system comprises: a host, a plurality of sensor devices and at least one signal receiving terminal; the host is respectively connected to each sensor device and each signal receiving terminal; The host comprises a first processing module, a first communication module and a first power module; the first processing module receives and sends data through the first communication module; the first power module is respectively connected to the first processing module and the first communication module to provide them with the power required for operation; the first processing module sends an alarm signal to the set signal receiving terminal when receiving the train approach signal sent by the set sensor device; The sensing device includes a second processing module, a second communication module, a second power module and an electromagnetic wheel axle sensor arranged on the track rail; when the train presses on the electromagnetic wheel axle sensor on the track rail, the electromagnetic wheel axle sensor is used to generate a train approaching voltage signal and send it to the second processing module; the second processing module sends the setting information to the host through the second communication module; the second power module is respectively connected to the electromagnetic wheel axle sensor, the second processing module, and the second communication module to provide them with the electric energy required for work; The signal receiving terminal includes a third processing module, a third communication module and a third power supply module; the third processing module receives the alarm signal through the third communication module; the third power supply module is respectively connected to the third processing module and the third communication module to provide them with the electrical energy required for their work.

2. The train approach safety protection alarm system according to claim 1, characterized in that: The signal receiving terminal further includes a positioning module, which is used to obtain the location information of the signal receiving terminal. The positioning module is connected to the third processing module and sends the obtained location information to the third processing module.

3. The train approach safety protection alarm system according to claim 2, characterized in that: The host includes a dangerous area terminal acquisition module, which is used to obtain signal receiving terminals within a set area from the train and located in the direction of train travel according to the direction and position of the train and the specific position of each signal receiving terminal, and send an alarm signal to the signal receiving terminal.

4. The train approach safety protection alarm system according to claim 1, characterized in that: The train approach safety protection alarm system further includes a server, which is respectively connected to the host and each signal receiving terminal; or, the host serves as the server.

5. The train approach safety protection alarm system according to claim 1, characterized in that: The host comprises a train speed acquisition module; the train speed acquisition module is used to acquire the train speed; At least two axle counters are set on the track, and the distance between the axle counters is known; when a train passes by, each axle counter will record the train axle and time; The average speed of the train is calculated by comparing the time difference between the two axle counters and the distance between the two axle counters. To obtain the speed of the train, the required or traveled distance s and the time t used to travel this distance; where s is the distance between axle counter A and axle counter B, which is artificially set to a known value; the time t taken for the train to pass AB is collected and obtained a ,t b , these two times t a ,t b The absolute value of the difference is the time required for the train to pass AB: t = |t a -t b |; where t is the time taken to pass the distance s; t a is the time count for passing through point A; t b is the time count for passing through point B; t a t b The absolute value of is at time t; Average speed calculation formula: Substituting t into the above formula, we can get: Among them, v is the average speed of the train to be calculated; The host includes a train passing detection module, and sensor equipment is installed at key positions of the railway track. These sensors can accurately and in real time capture the key information of the train's position, speed, state, and acceleration during the train's operation, and judge the direction of the train's passing according to the order of information collected by the sensor, so as to determine the valid information. The specific confirmation formula is to set the initial state of the sensor FB and mark it as "pending confirmation"; FB sends a confirmation request and waits for the confirmation of FE; FE receives and confirms: verification is performed; if the verification is passed, the FE state is marked as AE; otherwise, FE sends feedback to FB and requires reconfirmation; FB adjusts according to the feedback: if FB receives the feedback from FE, FB adjusts and repeats the steps; otherwise, FB waits for the final confirmation of FE; FE finally confirms: after AE completes the confirmation, it notifies FB, and the FB state is marked as AB; completes two-way confirmation: AB and AE both confirm that they are correct; completes two-way confirmation, and a total of three confirmations are determined as the final confirmation RS; The specific confirmation formula is RS = (FB->FE, FE->AE, AE->FB, FB->AB)*3, where RS is the final confirmation status, and -> is the derivation process; The host includes a train positioning module, and six groups of sensor devices are installed at key positions of the railway track. Each group of sensor devices is positioned as a collection point; the collection points at each position are grouped and numbered, and U1, U3, and U5 are specified as the uplink collection point monitoring intervals, and D2, D4, and D6 are specified as the downlink collection point monitoring intervals. The system analyzes whether a single collection point triggers the system set threshold, and performs train group positioning. The following is a train positioning method; First, define the up and down matrices [U1, U3, U5], [D2, D4, D6] to determine which group of matrices to enter according to the information of the collection points. Each group of matrices has its own judgment process. The progress tracking and up and down data confirmation methods are used to determine the train positioning. The up and down progress [E1, E2], E1 is up, E2 is down, and the track pressing status [S1, S2, S3, S4, S5, S6] each corresponds to the status of 6 collection points; according to the S1-S6 status bit is 1, to update the progress bit E1 value; such as S1 status bit is 1, E1 progress bit is 1, when S3 status is progress 1, E1 progress bit is 2, only when the specified status bit changes, the progress bit E1 is updated, so that the entire process of the train moving forward can be well controlled and its process bit can be recorded; The host includes a train alarm module. According to the above E1 progress bit, the direction and position of the train can be known. According to the value of the E1 progress bit, the ALM alarm bit state can also be inferred. When the train enters from U1 or U5, when the progress bit changes from E1[0] to E1[1], the alarm bit is pulled low. When the train arrives at U3, when the progress bit is E1[2], the alarm bit ALM is reset. The bit calculation formula is: RS=E1-1>1; wherein RS is the alarm state and E1 is the progress bit. In reality, there may be false triggering leading to progress position errors. In this case, it is necessary to introduce the OPP of the vehicle coming from the opposite direction to control it. When the OPP time caused by U1 or U5 is less than 6.5 minutes, cancel the state of U1 or U5. The specific calculation formula is: RU = (OPP < 6.5) && ((U1 | U5) = = 1); where RU is the reverse direction state, and OPP is the time for vehicles coming from the reverse direction; The host includes a train clearing module. If the status bit U1, U3, U5 is 1, it is necessary to wait for the CL clearing bit to reset the status bit, that is, when the U1, U3, U5 status bit and the clearing bit CL1, CL3, CL5 are all 1, the U1, U3, U5 status bit is 0, and the status bit calculation formula is: U1 =! ((U1&C1)>0); wherein U1 is the status bit and C1 is the clearing bit; The host includes a train reset module. If a train enters the E1 progress position, the progress position changes from E1[0] to E1[1], and the timing will be started. If there is no change in the progress position for 3 and a half minutes, it will be forced to enter the reset mode. The progress position E1 is cleared to 0, and the reset formula is: RW=(E1-1>1)T>3.5M; where RW is reset and E1 is progress position.

6. The train approach safety protection alarm system according to claim 1, characterized in that: The host includes an axis position detection sensor interface module, an intelligent electromagnetic switch control module, a precision power management module and a power intelligent management module; The axial position detection sensor interface module includes at least one connection circuit, which includes a sixth diode D6, a first second capacitor C12, a third resistor R3, and a second fourth resistor R24; The anode of the sixth diode, the second end of the first second capacitor C12, and the second end of the third resistor R3 are grounded respectively; the cathode of the sixth diode, the first end of the first second capacitor C12, and the first end of the third resistor R3 are connected to the second end of the second fourth resistor R24 ​​respectively; the first end of the second fourth resistor R24 ​​is connected to a port of the interface element J4; The intelligent electromagnetic switch control module includes at least one electromagnetic switch control circuit, and the electromagnetic switch control circuit includes a third transistor Q3, a first AC electronic solid-state relay K1, a first zero diode D10, a first four diodes D14, a first nine capacitors C19, a first four resistors R14, a first five resistors R15, a first six resistors R16, a third two resistors R32, a third four resistors R34, and a third six resistors R36; The emitter of the third transistor Q3 and the first end of the first six resistors R16 are grounded respectively; the base of the third transistor Q3 and the second end of the first six resistors R16 are connected to the first end of the third four resistors R34 respectively; The collector of the third transistor Q3 is respectively connected to the second end of the first fourth resistor R14, the positive electrode of the first fourth diode D14, the fourth port of the first AC electronic solid-state relay K1, and the first end of the third second resistor R32; The positive electrode of the first zero diode D10, the second end of the first nine capacitors C19, and the second end of the first five resistors R15 are grounded respectively; the negative electrode of the first zero diode D10, the first end of the first nine capacitors C19, and the first end of the first five resistors R15 are connected to the second end of the third two resistors R32 respectively; The first end of the third six resistor R36 is connected to the power supply voltage, and the second end of the third six resistor R36 is respectively connected to the first end of the first four resistor R14, the cathode of the first four diodes D14, and the third port of the first AC electronic solid-state relay K1; The precision power management module includes a first chip LM1, a power management chip U2, a first second diode D12, a first third diode D13, a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, a first zero capacitor C10, a first first capacitor C11, a first sixth capacitor C16, a first seventh capacitor C17, a first eighth capacitor C18, a first inductor L1, a first third resistor R13, a second eighth resistor R28, a second ninth resistor R29, a third zero resistor R30, and a third first resistor R31; The first end of the first zero capacitor C10 is respectively connected to the 12V power supply voltage, the first end of the first three resistors R13, and the IN pin of the power management chip U2; the second end of the first zero capacitor C10 is grounded; the second end of the first three resistors R13 is connected to the EN pin of the power management chip U2; The BS pin of the power management chip U2 is connected to the first end of the first capacitor C17, and the second end of the first capacitor C17 is respectively connected to the SW pin of the power management chip U2, the first end of the first inductor L1, and the cathode of the first and second diodes D12; The second end of the first inductor L1 is respectively connected to a 5V power supply voltage, a first end of a third resistor R31, a second end of a third resistor R30, a first end of a first capacitor C18, and a first end of a seventh capacitor C7; The second end of the third-first resistor R31 is connected to the anode of the first-third diode D13, and the first end of the third-zero resistor R30 is respectively connected to the FB pin of the power management chip U2 and the first end of the second-ninth resistor R29; the cathode of the first-third diode D13, the second end of the first-eighth capacitor C18, the second end of the seventh capacitor C7, the second end of the second-ninth resistor R29, and the anode of the first-second diode D12 are respectively grounded; The COMP pin of the power management chip U2 is connected to the first end of the first six capacitors C16, the second end of the first six capacitors C16 is connected to the first end of the second eight resistors R28, and the second end of the second eight resistors R28 is grounded; the GND pin of the power management chip U2 is grounded; the SS pin of the power management chip U2 is connected to the first end of the sixth capacitor C6, and the second end of the sixth capacitor C6 is grounded; The IN pin of the first chip LM1 is connected to a 5V power supply voltage, and the OUT pin of the first chip LM1 is respectively connected to a 3.3V power supply voltage, a first end of a fifth capacitor C5, and a first end of a first capacitor C11; the GND pin of the first chip LM1, a second end of the fifth capacitor C5, and a second end of the first capacitor C11 are respectively grounded; The power intelligent management module includes at least one power management circuit, and the power management circuit includes a second inductor L2, a first 04 capacitor C104, a first 05 capacitor C105, an eighty-fourth resistor R84, and an eighty-sixth resistor R86; The second end of the second inductor L2 is respectively connected to the first end of the first zero-five capacitor C105, the first end of the eighth-fourth resistor R84, and the first end of the first zero-fourth capacitor C104; the second end of the eighth-fourth resistor R84 is respectively connected to the second end of the first zero-fourth capacitor C104 and the first end of the eighth-sixth resistor R86; the second end of the first zero-five capacitor C105 and the second end of the eighth-sixth resistor R86 are respectively grounded.

7. An alarm method for a train approach safety protection alarm system according to any one of claims 1 to 6, characterized in that: The alarm method comprises: When the train presses on the electromagnetic wheel axle sensor on the track rail, the electromagnetic wheel axle sensor is used to generate a train approaching voltage signal and send it to the second processing module; the second processing module sends the setting information to the host through the second communication module; The first processing module of the host sends an alarm signal to the set signal receiving terminal upon receiving the train approach signal sent by the set sensor device; The third processing module of the signal receiving terminal receives the alarm signal through the third communication module.

8. The alarm method according to claim 7, characterized in that: The alarm method further comprises: The positioning module obtains the location information of the signal receiving terminal, and the positioning module sends the obtained location information to the third processing module; The dangerous area terminal acquisition module obtains the signal receiving terminals within the set area of ​​the train and in the direction of the train's travel according to the train's direction and position, combined with the specific positions of each signal receiving terminal, and sends an alarm signal to them.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the steps of the method according to claim 7 or 8 are implemented.

10. A storage medium having computer program instructions stored thereon, characterized in that: When the computer program instructions are executed by a processor, the steps of the method according to claim 7 or 8 are implemented.

Images