Locomotive hard wire reconnection signal safe transmission method and system and reconnection locomotive

Abstract

The invention discloses a locomotive hard wire reconnection signal safe transmission method, which comprises the following steps that: firstly, the corresponding relationship between codes and signals is preset, and the signals comprise a reconnection control signal, a verification signal and a verification error signal; the locomotive transmits a target signal through a hard wire; and when the target signal is a reconnection control signal, obtaining a to-be-sent state of the reconnection control signal, and judging whether the reconnection control signal needs to be sent or not. According to the transmission method, on the premise that the number of the hard wires is limited, the N reconnection hard wires can transmit 2N types of signals, the number of reconnection control signals is 2N-2, and the utilization rate of the reconnection hard wires is increased; through the verification signal and the verification error signal, a verification and error feedback mechanism is realized, and the consistency of the signals of the master vehicle and the slave vehicle is ensured. Meanwhile, a signal sending mechanism is designed according to the to-be-sent state of the reconnection control signal, and it is ensured that signal sending is carried out in order. The invention further discloses a locomotive hard wire reconnection signal safe transmission system and a reconnection locomotive.

Description

Technical Field

[0001] The invention relates to a method and system for safely transmitting a locomotive hard-line reconnection signal and a reconnection locomotive, and belongs to the field of rail transportation. Background Art

[0002] The reconnection signal transmission between trains usually adopts the WTB (Wire Train Bus) communication bus. However, in some cases, when the communication line cannot meet the requirements or the train is not equipped with dedicated reconnection network equipment, ordinary hard wires can be used to transmit the reconnection signal.

[0003] In order to transmit as many signals as possible with a limited number of hard wires, combined signals can be used for transmission. For example, if 5 hard wires are used separately, each hard wire can only transmit two states, 1 and 0, and a total of 10 state information can be transmitted. If hard wire combination encoding is used, there are 32 combinations, and 31 state information can be transmitted (all 0 represents idle state). Although combined signals can transmit more information, the signal transmission process is relatively complicated. How to handle signal concurrency and how to ensure signal transmission security are issues that need to be considered. When using hard wire combination to transmit signals, the following problems exist:

[0004] 1) The combined signal can generally only be transmitted in one direction, that is, from the master vehicle to the slave vehicle. After the master vehicle sends the signal, it is impossible to know whether the slave vehicle can correctly receive the signal, nor is it possible to know whether all the reconnection signals of the current slave vehicle are the same as those of the master vehicle, and the signal security cannot be guaranteed.

[0005] 2) Only one combination of signals can be transmitted at the same time, but the signal triggering time is random, and multiple signals may be triggered in the same time period.

[0006] Chinese invention patent application No. 201810690695.9 A method, system and reconnected locomotive for transmitting instructions between locomotives discloses a method for transmitting instructions between locomotives. First, the correspondence between N-bit binary numbers and instructions is preset so that each N-bit binary number corresponds to an instruction; then, the master car transmits the target N-bit binary number corresponding to the target instruction to the slave car through N first hard wires, so that each bit in the target N-bit binary number can be transmitted to the slave car through a first hard wire; finally, the slave car can determine the target instruction based on the correspondence between the N-bit binary number and the instruction, thereby completing the transmission of the instructions between locomotives. It can be seen that by applying this transmission method, N hard wires can transmit 2 NThis kind of instruction can effectively improve the transmission efficiency of the instruction; at the same time, with the improvement of the instruction transmission efficiency, the number of hard wires can be reduced, and the hard wire connection structure can be further simplified. However, this patent also requires another hard wire to feedback the instruction reception status. After each instruction is sent, feedback must be received before the next instruction can be sent, and it can only feedback whether the instruction is received, but it is impossible to know whether the received instruction is correct. Therefore, a more effective solution is needed for the transmission efficiency and signal security under a limited number of hard wires. Summary of the invention

[0007] The present invention aims to provide a method and system for safely transmitting locomotive hard-wire reconnection signals and a reconnection locomotive, so as to improve the transmission efficiency and the safety of signal transmission under a limited number of reconnection hard-wires.

[0008] In order to achieve the above object, the technical solution adopted by the present invention is: a method for safely transmitting a locomotive hard-line reconnection signal, the transmission method comprising:

[0009] Step 1), presetting the corresponding relationship between the code and the signal; the signal includes a reconnection control signal, a check signal, a check error signal and an emergency signal;

[0010] The number N of the hard lines is determined based on the number of the reconnection control signals, then an N-bit binary number corresponds to one of the codes, and an N-bit binary number and signal duration correspond to one of the signals; wherein N is a positive integer;

[0011] The reconnection control signal and the verification signal are distinguished by the corresponding signal durations, and the emergency signal and the verification error signal are distinguished by the corresponding signal durations;

[0012] Step 2), the locomotive transmits a target signal via a hard line, wherein the target signal corresponds to a target N-bit binary number and the signal duration;

[0013] Wherein, when the target signal is the reconnection control signal, the waiting-to-send state of the reconnection control signal is obtained to determine whether the reconnection control signal needs to be sent:

[0014] Step a1), if the waiting state of the reconnection control signal is waiting to be sent, then send the corresponding target code, and reset the waiting state of the reconnection control signal to sent,

[0015] Step a2), when the reconnection control signal is sent or the to-be-sent state of the reconnection signal is sent, reading the to-be-sent state of the next target signal;

[0016] Wherein, the locomotive includes the master locomotive and the slave locomotive.

[0017] The transmission method provided by the present invention realizes that N reconnected hard wires can transmit 2 by presetting the corresponding relationship between codes and signals, including check signals, check error signals and emergency signals, under the premise that the number of hard wires is limited. N signals, of which the reconnection control signal is 2 N -2, improving the utilization rate of the reconnection hard line; realizing the verification and error feedback mechanism by verifying the signal and verifying the error signal, ensuring the consistency of the signals of the master and slave vehicles; at the same time, designing the signal sending mechanism according to the waiting state of the reconnection control signal, ensuring the orderly transmission of the signal.

[0018] According to the embodiments of the present invention, the present invention can be further optimized. The following is the technical solution formed after optimization:

[0019] In one preferred embodiment, in step 2), when the target signal is the reconnection control signal, obtaining the waiting-to-send state of the reconnection control signal specifically includes:

[0020] When the reconnection control signal is triggered, when the state of the reconnection control signal changes from 0 to 1, the waiting state of the reconnection control signal is set to waiting to be sent;

[0021] When the state of the reconnection control signal is 0, resetting the waiting state of the reconnection control signal to sent;

[0022] The reconnection control signal is in a ready-to-send state after being set and reset.

[0023] In one preferred embodiment, in step a2), the next target signal is the first reconnection control signal or an adjacent reconnection control signal.

[0024] When the next target signal is the first reconnection control signal, the signal sending mode of the transmission method is a priority sending mode; when the next target signal is an adjacent reconnection control signal, the signal sending mode of the transmission method is a sequential sending mode.

[0025] In one preferred embodiment, the step 2) the locomotive transmits the target signal via hard wire specifically includes:

[0026] Step 2.1), the main vehicle transmits the reconnection control signal to the locomotive via N hard wires,

[0027] Step 2.2), the locomotive receives the reconnection control signal through N hard wires, and the locomotive stores the reconnection control signal as a target reconnection control signal,

[0028] Step 2.3), after all the reconnection control signals are sent, the master vehicle sends the verification signal to the locomotive via N hard wires,

[0029] Step 2.4), after receiving the verification signal through N hard wires, the locomotive verifies the target reconnection control signal.

[0030] Step 2.5), when the locomotive passes the verification of the target reconnection control signal, the locomotive outputs the target reconnection control signal through N hard wires,

[0031] Step 2.6), when the locomotive fails to pass the verification of the target reconnection control signal, the locomotive feeds back the verification error signal to the master vehicle through the N hard wires, and the locomotive clears the target reconnection control signal.

[0032] Step 2.7), when the main vehicle receives the verification error signal through the N hard wires, the waiting state of the reconnection control signal is reset to waiting to be sent, and the reconnection control signal is retransmitted to the locomotive through the N hard wires.

[0033] In one preferred embodiment, the signal further includes an idle signal, and the step 2) the locomotive transmits the target signal via a hard line specifically includes:

[0034] Step 2.8), when the target signal is the idle signal, the main vehicle sends the verification signal to the locomotive through the N hard wires at a first time interval, and if the locomotive does not receive the verification signal within a second time interval, it sends the verification error signal;

[0035] Step 2.9), when the target signal is the emergency signal, the locomotive processes the emergency signal first.

[0036] In one preferred embodiment,

[0037] In the step 2.1), the main vehicle transmits the reconnection control signal to the locomotive through N hard wires, and the locomotive traction is blocked.

[0038] In the step 2.5), when the locomotive passes the verification of the target reconnection control signal, the locomotive releases the traction blockade, and the locomotive outputs the target reconnection control signal through N hard wires.

[0039] In the step 2.7), when the main vehicle receives the verification error signal through the N hard wires, the locomotive traction is blocked, the waiting state of the reconnection control signal is reset to waiting to be sent, and the reconnection control signal is retransmitted to the locomotive through the N hard wires.

[0040] Based on the above preferred embodiments, when the signal received from the slave vehicle is inconsistent with the master vehicle, after the master vehicle receives an error feedback signal, the transmission method provided by the present invention can realize automatic error correction, making the locomotive more intelligent, and the master vehicle will perform corresponding protection.

[0041] In one preferred embodiment, the check signal is a CRC signal, and the check error signal is a CRC error signal.

[0042] Based on the same concept, the present invention also provides a locomotive hard-line reconnection signal safety transmission system, which includes a memory and one or more processors; one or more programs are stored on the memory, and when the one or more programs are executed by the one or more processors, the one or more processors implement the steps of the above method.

[0043] Based on the same concept, the present invention also provides a reconnected locomotive, including a reconnected locomotive body and the locomotive hard-wire reconnected signal safety transmission system as described above.

[0044] Beneficial Effects

[0045] Compared with the prior art, the advantages of the present invention are:

[0046] 1) Including the verification signal, verification error signal and emergency signal, N reconnected hard wires can transmit 2 N signals, of which the reconnection control signal is 2 N -2, improve the utilization rate of reconnected hard wires;

[0047] 2) By detecting the waiting state of the signal, it is determined whether the corresponding signal needs to be sent. The signal triggering process and the signal sending process do not interfere with each other. It can support the simultaneous triggering of multiple signals without the need for manual control of the signal triggering sequence;

[0048] 3) You can choose between sequential sending mode and priority sending mode according to your needs. When you choose the priority sending mode, the signal with higher priority will respond faster.

[0049] 4) It has data verification, error feedback and automatic error correction functions, which can effectively ensure the security of signal transmission. When errors occur in signal transmission, the train can be protected in time and the errors can be corrected automatically, reducing human intervention. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 is a basic flow chart of sending and receiving reconnection control signals according to an embodiment of the present invention;

[0051] Figure 2 is a schematic diagram of a sequential sending method according to an embodiment of the present invention;

[0052] Figure 3 is a schematic diagram of a priority sending method according to an embodiment of the present invention;

[0053] Figure 4 Schematic diagram of sending CRC check code according to an embodiment of the present invention;

[0054] Figure 5 Schematic diagram of receiving and checking CRC check codes according to an embodiment of the present invention;

[0055] Figure 6 It is a schematic diagram of receiving and processing a CRC error signal according to an embodiment of the present invention. DETAILED DESCRIPTION

[0056] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0057] Example 1

[0058] Figure 1 This is a flow chart of a method for safely transmitting a locomotive hard-wire reconnection signal provided in Example 1 of the present invention. Figure 1 As shown, the method for safely transmitting a locomotive hard-wire reconnection signal provided by an embodiment of the present invention includes:

[0059] 1) Signal encoding

[0060] In this embodiment 1, the signal is transmitted via a reconnected hardwire. N hardwires are used to transmit an N-bit binary number, and the N-bit binary number can represent 0 to 2. N -1 decimal number, so N binary digits can represent 2 N There are 2 types of encoding, that is, N hard wires have 2 N All 0s are used to represent idle lines, all 1s are used to represent special signals, such as CRC error signals and emergency signals, and the remaining codes are used to represent reconnection control signals (X1, X2, ...Xi..., Xn) and CRC signals, where 1≤i≤n, 1≤n≤2 N -2. To distinguish each reconnection control signal, a unique code needs to be assigned to each reconnection control signal. The reconnection control signal and the CRC signal are distinguished based on the pulse width of the signal (i.e., signal duration). The code definition and pulse width are shown in Table 1.

[0061] Table 1 Coding definition and pulse width

[0062]

[0063]

[0064] The above pulse widths are typical values ​​and can be shortened or lengthened appropriately according to actual conditions. It should be noted that the effective widths of the reconnection control signal and the CRC signal cannot overlap.

[0065] 2) Signal sending and receiving control

[0066] ①Basic process of signal sending and receiving

[0067] In this embodiment 1, the basic process of sending and receiving the reconnection control signal is as follows: Figure 1 shown.

[0068] When the reconnection control signal is triggered, the master vehicle will send these reconnection control signals in a certain order. After each reconnection control signal is sent, it will be marked as sent until the signal is triggered again. When all signals are sent, an N-bit CRC check code is generated according to the current state of the reconnection control signal and sent through the reconnection hard line.

[0069] The slave control vehicle will receive the signal on the reconnection hard line in real time. When the received signal is a reconnection control signal, the signal will be latched to obtain the target reconnection control signal (Y1, Y2, ...Yj..., Yn), where 1≤j≤n, and then the target reconnection control signal will be output as the reconnection control signal of the slave vehicle. When the received signal is a CRC check code, the latched target reconnection control signal (Y1, Y2, ...Yj..., Yn) is CRC checked. If the check fails, the target reconnection control signal (Y1, Y2, ...Yj..., Yn) is cleared, and a CRC error signal is sent to the reconnection hard line.

[0070] After receiving the CRC error signal, the master control vehicle will reset the sent status of the reconnection control signal (X1, X2, ...Xi..., Xn), and restart sending the reconnection control signal (X1, X2, ...Xi..., Xn), while the locomotive traction is blocked.

[0071] ②Signal transmission method

[0072] Signal triggering and resetting is a random process. There may be multiple signal triggers at the same time. However, signal transmission must be carried out in order. Only one signal can be sent at the same time. To ensure that signal transmission is carried out in order, this embodiment 1 provides two signal transmission methods. Method 1 is a sequential transmission method. Figure 2 As shown, method 2 is a sending method with priority, such as Figure 3 shown.

[0073] Method 1: Sequential sending method

[0074] Method 1 is mainly divided into two processes: signal preprocessing and signal sending. The purpose of signal preprocessing is to obtain the state of the signal to be sent. When sending the signal, it is only necessary to detect the state of the signal to be sent. Through signal preprocessing, the two processes of signal triggering and signal sending can be separated and do not interfere with each other, which can effectively solve the problem of multiple signals being triggered at the same time.

[0075] Signal preprocessing process: When the state of the reconnection control signal X changes from 0 to 1, set its waiting state S = 1; when the reconnection control signal X is 0, reset its waiting state S = 0. After the reconnection control signal (X1, X2, ...Xi..., Xn) is set and reset, the waiting state S1, S2, ...Si..., Sn of the reconnection control signal is obtained. Among them, X∈{X1, X2, ...Xi..., Xn}, S∈{S1, S2, ...Si..., Sn}.

[0076] Signal sending process: When the reconnection control signal is sent, the status of S1, S2, ...Si..., Sn is read to determine whether the corresponding signal needs to be sent. For example, when the waiting state S of a certain signal X is read as 1, the coding combination corresponding to the signal X is sent to the reconnection hard line, and the waiting state of the signal X is reset to S=0, which means that the signal X has been sent and will not be sent in the next cycle. When the signal is sent or the waiting state S=0 of the signal X is read, and the line is detected to be idle, the waiting state of the next adjacent signal is read. The reading order of S1~Sn is S1, S2, S3, ...Si..., Sn, and when Sn is read, it returns to S1 again.

[0077] Method 2: Priority sending method

[0078] This method is similar to the sequential transmission method, and is also divided into two processes: signal preprocessing and signal transmission. The difference is that after each signal is sent, the waiting state of the next adjacent signal is no longer read, but returns to S1 to read the state of S1 again. For example, when the waiting state S of the signal X is read as 1, the signal X is sent to the reconnected hard line. When the signal is sent and the line is detected to be idle, it returns to S1 and reads the state of S1; when the waiting state S of the signal X is read as 0, it starts to read the waiting state of the next adjacent signal.

[0079] The characteristic of the priority sending method is that the sending priorities of the reconnection control signals (X1, X2, ...Xi..., Xn) are different. The signals in front have higher priorities than the signals in the back. When there are multiple reconnection control signals to be sent, the signals in front will be sent first, and the response speed will also be faster.

[0080] ③CRC check

[0081] CRC check code sending: The CRC check code sending process is as follows Figure 4 As shown, after the master car sends all the signals, if it detects that the line is idle and there is no new signal trigger, it sends a CRC check code to the bus (i.e., the reconnection hard line). The CRC check code is generated by the current state of the reconnection control signal (X1, X2, ...Xi..., Xn). The number of CRC bits matches the number of reconnection hard lines. There are many specific CRC check code generation algorithms, which are not limited here. In addition, to ensure that the signals of the master and slave cars are always consistent and to prevent incorrect signal reception due to line failures, when the bus is idle, it is necessary to send a CRC check code to the bus every 5 seconds.

[0082] CRC check code reception and verification: The CRC check code reception and verification process is as follows Figure 5 As shown, when the CRC check code is received, the CRC check code is generated according to the same rules according to the currently received target reconnection control signal (Y1, Y2, ...Yj..., Yn). If the generated check code is inconsistent with the received check code, a CRC check error signal is output. If the CRC check code is not received for a certain period of time after the signal is sent, it represents a CRC reception failure, and a CRC check error signal is also output. When the CRC check error occurs, the entire train is blocked and a CRC error signal is sent to the bus (i.e., the reconnection hard line).

[0083] CRC error signal reception and processing: CRC error signal reception and processing process is as follows Figure 6 As shown, when the master car receives the CRC error signal code, it means that at least one car has a CRC check error. At this time, the master car will resend all the triggered signals in X1, X2, ...Xi..., Xn. In this way, the vehicle can automatically return to normal.

[0084] ④ Emergency signal processing

[0085] The emergency signal is the highest priority signal. When any vehicle triggers an emergency, it will continue to send all 1s to the bus. This signal will override all other signals. At this time, all the reconnected vehicles will receive this signal, causing the entire train to be in emergency.

[0086] 4) Transmission line detection

[0087] Each vehicle has a signal output interface and a signal input interface connected to the reconnection line, which can support the reconnection of multiple vehicles. When the input and output equipment fails or the transmission line is grounded, short-circuited, disconnected, interfered, etc., causing signal transmission abnormality, in addition to CRC verification, other methods can be used to identify it.

[0088] Example 2

[0089] An embodiment of the present invention also provides a locomotive hard-wire reconnection signal safety transmission system, the system comprising: a memory, one or more processors; one or more programs are stored on the memory, and when the one or more programs are executed by the one or more processors, the one or more processors implement the steps of the locomotive hard-wire reconnection signal safety transmission method provided in the above embodiment.

[0090] The locomotive hard-wire reconnection signal safety transmission system provided in this embodiment can call the transmission program stored in the memory through the processor to implement the steps of the locomotive hard-wire reconnection signal safety transmission method provided in the above embodiment. Therefore, this system has the same practical effect as the above locomotive hard-wire reconnection signal safety transmission method.

[0091] Example 3

[0092] The embodiment of the present invention also provides a reconnected locomotive including a reconnected locomotive body and any one of the locomotive hard-wire reconnected signal safety transmission systems described above. Furthermore, since the reconnected locomotive is provided with any one of the locomotive hard-wire reconnected signal safety transmission systems described above, the reconnected locomotive has the same practical effect as the locomotive hard-wire reconnected signal safety transmission system described above.

[0093] Example 4

[0094] The locomotive hard-wire reconnection signal safety transmission method provided in the above embodiment has been installed and applied in batches on a certain engineering vehicle. The vehicle uses 5 hard wires to transmit reconnection control signals, including emergency signals, and transmits a total of 32 control signals, including level signals (such as power supply mode) and pulse signals (such as bow lift key signals). A priority sending method is adopted, and the signals are sorted from high to low according to their importance. After the vehicle is occupied, the master control vehicle automatically sends all triggered reconnection control signals to the reconnection hard wire, and at the same time the vehicle traction is blocked, and it displays "Traction blockade: hard wire reconnection signal is being initialized!" When the master control vehicle receives the CRC check code and the check is successful, and there is no CRC error signal triggered on the reconnection hard wire, the blocking condition and prompt are cancelled, and the vehicle can move normally. When the master vehicle and the slave vehicle receive a CRC check error, the traction blockade will be triggered, and the master vehicle will send all triggered reconnection control signals again. Similarly, the master and slave vehicles will automatically release the blockade after the CRC check passes. Thereby, after the vehicle is occupied, the driver does not need to perform other operations. The locomotive hard-line reconnection signal safety transmission system provided by the above embodiment automatically completes the transmission of the reconnection signal. When the signal transmission fails, the vehicle automatically protects itself and the signal is automatically reset.

[0095] The contents explained in the above embodiments should be understood as these embodiments are only used to more clearly illustrate the present invention, and are not used to limit the scope of the present invention. After reading the present invention, various equivalent forms of modifications to the embodiments made by those skilled in the art fall within the scope defined by the claims attached to the present invention.

Claims

1. A method for safely transmitting a locomotive hard-line reconnection signal, characterized in that: The transmission method comprises: Step 1), presetting the corresponding relationship between the code and the signal; the signal includes a reconnection control signal, a check signal, a check error signal and an emergency signal; The number N of the hard lines is determined based on the number of the reconnection control signals, then an N-bit binary number corresponds to one of the codes, and an N-bit binary number and signal duration correspond to one of the signals; wherein N is a positive integer; Step 2), the locomotive transmits a target signal via a hard line, wherein the target signal corresponds to a target N-bit binary number and the signal duration; Wherein, when the target signal is the reconnection control signal, the waiting-to-send state of the reconnection control signal is obtained to determine whether the reconnection control signal needs to be sent: Step a1), if the waiting state of the reconnection control signal is waiting to be sent, then send the corresponding target code, and reset the waiting state of the reconnection control signal to sent, Step a2), when the reconnection control signal is sent or the to-be-sent state of the reconnection signal is sent, reading the to-be-sent state of the next target signal; Wherein, the locomotive includes the master locomotive and the slave locomotive.

2. The method for safely transmitting a locomotive hard-wire reconnection signal according to claim 1, characterized in that: In the step 2), when the target signal is the reconnection control signal, obtaining the waiting-to-send state of the reconnection control signal specifically includes: When the reconnection control signal is triggered, when the state of the reconnection control signal changes from 0 to 1, the waiting state of the reconnection control signal is set to waiting to be sent; When the state of the reconnection control signal is 0, resetting the waiting state of the reconnection control signal to sent; The reconnection control signal is in a ready-to-send state after being set and reset.

3. The method for safely transmitting a locomotive hard-wire reconnection signal according to claim 1, characterized in that: In the step a2), the next target signal is the first reconnection control signal or an adjacent reconnection control signal.

4. The method for safely transmitting a locomotive hard-wire reconnection signal according to claim 2, characterized in that: The step 2) the locomotive transmits the target signal via hard wire specifically includes: Step 2.1), the main vehicle transmits the reconnection control signal to the locomotive via N hard wires; Step 2.2), the locomotive receives the reconnection control signal through N hard wires, and the locomotive stores the reconnection control signal as a target reconnection control signal; Step 2.3), after all the reconnection control signals are sent, the master vehicle sends the verification signal to the locomotive through the N hard wires; Step 2.4), after receiving the verification signal through the N hard wires, the locomotive verifies the target reconnection control signal; Step 2.5), when the locomotive passes the verification of the target reconnection control signal, the locomotive outputs the target reconnection control signal through N hard wires; Step 2.6), when the locomotive fails to pass the verification of the target reconnection control signal, the locomotive feeds back the verification error signal to the master vehicle through the N hard wires, and the locomotive clears the target reconnection control signal; Step 2.7), when the main vehicle receives the verification error signal through the N hard wires, the waiting state of the reconnection control signal is reset to waiting to be sent, and the reconnection control signal is retransmitted to the locomotive through the N hard wires.

5. The method for safely transmitting locomotive hard-wire reconnection signals according to claim 4, characterized in that: The signal also includes an idle signal, and the step 2) the locomotive transmits the target signal via a hard line specifically includes: Step 2.8), when the target signal is the idle signal, the main vehicle sends the verification signal to the locomotive through the N hard wires at a first time interval, and if the locomotive does not receive the verification signal within a second time interval, it sends the verification error signal; Step 2.9), when the target signal is the emergency signal, the locomotive processes the emergency signal first.

6. The method for safely transmitting locomotive hard-wire reconnection signals according to claims 4 to 5, characterized in that: In the step 2.1), the main vehicle transmits the reconnection control signal to the locomotive via N hard wires, and the locomotive traction is blocked; In the step 2.5), when the locomotive passes the verification of the target reconnection control signal, the locomotive releases the traction blockade, and the locomotive outputs the target reconnection control signal through the N hard wires; In the step 2.7), when the main vehicle receives the verification error signal through the N hard wires, the locomotive traction is blocked, the waiting state of the reconnection control signal is reset to waiting to be sent, and the reconnection control signal is retransmitted to the locomotive through the N hard wires.

7. The method for safely transmitting locomotive hard-wire reconnection signals according to claims 1 to 7, characterized in that: The verification signal is a CRC signal, and the verification error signal is a CRC error signal.

8. A locomotive hard-line reconnection signal safety transmission system, characterized in that: The system includes a memory and one or more processors; one or more programs are stored in the memory, and when the one or more programs are executed by the one or more processors, the one or more processors implement the steps of any one of the methods of claims 1 to 7.

9. A multiple-unit locomotive, comprising a multiple-unit locomotive body, characterized in that: It also includes the locomotive hard-wire reconnection signal safety transmission system as described in claim 8.

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