Vehicle speed collection device, method, equipment and storage medium

Abstract

This application discloses a vehicle speed acquisition device, method, electronic device, and computer-readable storage medium. The device includes two speed sensors and a speed measurement plug-in. The speed measurement plug-in integrates two processing units and an output unit. The first processing unit is connected to the first speed sensor via a first set of input channels of the speed measurement plug-in and is configured to generate a first speed signal based on a pair of speed pulse signals output by the first speed sensor. The second processing unit is connected to the second speed sensor via a second set of input channels of the speed measurement plug-in and is configured to generate a second speed signal based on a pair of speed pulse signals output by the second speed sensor. The output unit determines and outputs a vehicle speed signal based on a voting calculation of the first and second speed signals. This application can effectively reduce data errors, improve the reliability and accuracy of the collected and output vehicle speed data, and effectively ensure driving safety.

Description

Technical Field

[0001] The present application relates to the field of electrical information technology, and in particular to a vehicle speed collection device, method, electronic device, and computer-readable storage medium. Background Art

[0002] During train operation, especially for high-speed rail trains, the accuracy of speed measurement directly impacts train safety, train protection, and door protection. Therefore, the speed measurement module on a train is considered a critical component of ATP (Automatic Train Protection) and has high SIL (Safety Integrity Level) requirements.

[0003] In traditional wheel-rail vehicles, both the onboard system and the signaling system must collect speed data separately. This data is then compared with the vehicle's TCMS (Train Control and Management System) interface to ensure the uniqueness and security of speed measurements. Related technologies typically use two speed measurement systems, resulting in multiple links and potential errors at various stages, reducing overall data collection accuracy.

[0004] In view of this, providing a solution to the above technical problems has become an urgent concern for those skilled in the art. Summary of the Invention

[0005] The purpose of this application is to provide a driving speed collection device, method, electronic device and computer-readable storage medium, so as to effectively improve the speed collection accuracy and data reliability and ensure driving safety.

[0006] To solve the above technical problems, on the one hand, the present application discloses a method for collecting driving speed, including two speed sensors and a speed measurement plug-in; the speed measurement plug-in is integrated with two processing units and an output unit;

[0007] The first processing unit is connected to the first speed sensor through the first group of input channels of the speed measurement plug-in, and is used to generate a first speed signal based on a pair of speed pulse signals output by the first speed sensor;

[0008] The second processing unit is connected to the second speed sensor through the second group of input channels of the speed measurement plug-in, and is used to generate a second speed signal based on a pair of speed pulse signals output by the second speed sensor;

[0009] The output unit determines and outputs a vehicle speed signal based on a voting calculation of the first speed signal and the second speed signal.

[0010] Optionally, the output unit is specifically configured to:

[0011] Determining an instantaneous speed value in each sampling period based on voting calculation of the first speed signal and the second speed signal;

[0012] Determining an average speed value in each statistical period based on voting calculation of the first speed signal and the second speed signal;

[0013] Based on the instantaneous speed value and the average speed value, a driving speed value is determined by using a weighted method in each statistical period.

[0014] Optionally, when the output unit adopts a weighted method to calculate and determine a driving speed value in each statistical period, it is specifically used to:

[0015] Performing arithmetic averaging on the instantaneous speed values ​​successfully voted out in the current statistical period to obtain an instantaneous speed average value;

[0016] The instantaneous speed average value and the average speed value of the current statistical period are weightedly calculated to obtain the driving speed value.

[0017] Optionally, when the output unit determines an instantaneous speed value in each sampling period, it is specifically configured to:

[0018] determining whether a deviation between the first speed signal and the second speed signal in a current sampling period is within a first preset boundary range;

[0019] If yes, calculating the average of the first speed signal and the second speed signal as the instantaneous speed value;

[0020] If not, it is determined that the voting for the instantaneous speed value in the current sampling period has failed.

[0021] Optionally, when the output unit determines an average speed value in each statistical period, it is specifically configured to:

[0022] Calculating a first average value of the first speed signal in a current statistical period;

[0023] Calculating a second average value of the second speed signal in a current statistical period;

[0024] Determining whether a deviation between the first average value and the second average value in a current statistical period is within a second preset limit range;

[0025] If yes, then calculating the average of the first average value and the second average value as the average speed value;

[0026] If not, it is determined that the voting for the average speed value in the current statistical period has failed.

[0027] Optionally, the first group of input channels includes a first input channel and a second input channel, and the first input channel and the second input channel are powered and isolated from each other, so as to ensure that a pair of speed pulse signals of the first speed sensor are isolated from each other;

[0028] The second group of input channels includes a third input channel and a fourth input channel. The third input channel and the fourth input channel are powered and isolated from each other, so as to ensure that a pair of speed pulse signals of the second rotation speed sensor are isolated from each other.

[0029] Optionally, the first input channel and the third input channel are both powered by a power transmission port of the speed measurement plug-in; and the second input channel and the fourth input channel are both powered by a power receiving port of the speed measurement plug-in.

[0030] Optionally, there are two speed measuring plug-ins so that a superior system can make redundant decisions based on the speed signals output by the two speed measuring plug-ins; the superior system includes an onboard system and a signaling system of the train.

[0031] On the other hand, the present application also discloses a method for collecting driving speed, comprising:

[0032] The first processing unit of the speed measurement plug-in receives a pair of speed pulse signals output by the first speed sensor and generates a first speed signal by calculating the signals;

[0033] The second processing unit of the speed measurement plug-in receives a pair of speed pulse signals output by the second speed sensor and generates a second speed signal by calculating the speed pulse signals;

[0034] The output unit of the speed measurement plug-in performs voting calculation on the first speed signal and the second speed signal to determine and output a driving speed signal.

[0035] Optionally, performing voting calculation on the first speed signal and the second speed signal by the output unit of the speed measurement plug-in to determine and output a driving speed signal includes:

[0036] Performing voting calculation on the first speed signal and the second speed signal to determine an instantaneous speed value in each sampling period;

[0037] Performing voting calculation on the first speed signal and the second speed signal to determine an average speed value in each statistical period;

[0038] Based on the instantaneous speed value and the average speed value, a driving speed value is determined by using a weighted method in each statistical period.

[0039] Optionally, the method of calculating and determining a driving speed value by a weighted method in each statistical period includes:

[0040] Performing arithmetic averaging on the instantaneous speed values ​​successfully voted out in the current statistical period to obtain an instantaneous speed average value;

[0041] The instantaneous speed average value and the average speed value of the current statistical period are weightedly calculated to obtain the driving speed value.

[0042] Optionally, determining an instantaneous speed value in each sampling period includes:

[0043] determining whether a deviation between the first speed signal and the second speed signal in a current sampling period is within a first preset boundary range;

[0044] If yes, calculating the average of the first speed signal and the second speed signal as the instantaneous speed value;

[0045] If not, it is determined that the voting for the instantaneous speed value in the current sampling period has failed.

[0046] Optionally, determining an average speed value in each statistical period includes:

[0047] Calculating a first average value of the first speed signal in a current statistical period;

[0048] Calculating a second average value of the second speed signal in a current statistical period;

[0049] Determining whether a deviation between the first average value and the second average value in a current statistical period is within a second preset limit range;

[0050] If yes, then calculating the average of the first average value and the second average value as the average speed value;

[0051] If not, it is determined that the voting for the instantaneous speed value in the current statistical period has failed.

[0052] In another aspect, the present application further discloses an electronic device, comprising:

[0053] memory for storing computer programs;

[0054] A processor is used to execute the computer program to implement the steps of any of the above-mentioned methods for collecting driving speed.

[0055] On the other hand, the present application further discloses a computer-readable storage medium, in which a computer program is stored. When the computer program is executed by a processor, it is used to implement the steps of any of the above-mentioned methods for collecting vehicle speeds.

[0056] The beneficial effects of the vehicle speed collection device, method, electronic device and computer-readable storage medium provided in the present application are: based on the redundant speed measurement achieved by two speed sensors, the present application further combines the two speed signals for comprehensive voting and calculation, which can effectively reduce data errors, improve the reliability and accuracy of the collected and output vehicle speed data, and effectively ensure driving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] In order to more clearly illustrate the technical solutions in the prior art and the embodiments of the present application, the following is a brief introduction to the drawings required for describing the prior art and the embodiments of the present application. Of course, the drawings described below in connection with the embodiments of the present application are only part of the embodiments of the present application. For those skilled in the art, other drawings can be obtained based on the provided drawings without inventive effort, and the obtained other drawings also fall within the scope of protection of the present application.

[0058] Figure 1 This is a schematic structural diagram of a vehicle speed collection device disclosed in an embodiment of the present application;

[0059] Figure 2 This is a schematic structural diagram of another vehicle speed collection device disclosed in an embodiment of the present application;

[0060] Figure 3 This is a flow chart of a method for collecting driving speed disclosed in an embodiment of the present application;

[0061] Figure 4 This is a structural block diagram of an electronic device disclosed in an embodiment of the present application. DETAILED DESCRIPTION

[0062] The core of this application is to provide a driving speed collection device, method, electronic device and computer-readable storage medium to effectively improve the speed collection accuracy and data reliability and ensure driving safety.

[0063] In order to more clearly and completely describe the technical solutions in the embodiments of this application, the technical solutions in the embodiments of this application will be introduced below in conjunction with the drawings in the embodiments of this application. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of this application.

[0064] During train operation, especially for high-speed rail trains, the accuracy of speed measurement directly impacts train safety, train protection, and door protection. Therefore, the speed measurement module on a train is considered a critical component of ATP (Automatic Train Protection) and has high SIL (Safety Integrity Level) requirements.

[0065] In traditional wheel-rail vehicles, both the onboard system and the signaling system must collect speed data separately. This data is then compared with the vehicle's TCMS (Train Control and Management System) interface to ensure the uniqueness and security of speed measurements. Related technologies typically use two speed measurement systems, resulting in multiple links and potential errors at various stages, reducing overall data collection accuracy.

[0066] In view of this, the present application provides a driving speed collection solution that can effectively solve the above problems.

[0067] See also Figure 1 As shown, the embodiment of the present application discloses a vehicle speed acquisition device, including two speed sensors 101 and a speed measurement plug-in 102; the speed measurement plug-in integrates two processing units and an output unit;

[0068] The first processing unit is connected to the first speed sensor via the first group of input channels of the speed measurement plug-in, and is used to generate a first speed signal based on a pair of speed pulse signals output by the first speed sensor;

[0069] The second processing unit is connected to the second speed sensor via the second group of input channels of the speed measurement plug-in, and is used to generate a second speed signal based on a pair of speed pulse signals output by the second speed sensor;

[0070] The output unit determines and outputs a vehicle speed signal based on a voting calculation of the first speed signal and the second speed signal.

[0071] Specifically, the vehicle speed acquisition device provided in the embodiments of the present application utilizes two speed sensors to achieve redundant wheel speed measurement, effectively avoiding data distortion caused by speed sensor failure. Generally, a speed sensor outputs a pair of speed pulse signals with a 90° phase difference. Using a corresponding calculation formula, the corresponding speed value can be calculated based on this pair of speed pulse signals and relevant parameter values ​​(such as wheel diameter).

[0072] The present application provides a speed measurement plug-in that is connected to two speed sensors. Specifically, a pair of speed pulse signals from the first speed sensor are output to a first set of input channels of the speed measurement plug-in, and a pair of speed pulse signals from the second speed sensor are output to a second set of input channels of the speed measurement plug-in. The first set of input channels includes a first input channel and a second input channel, and the second set of input channels includes a third input channel and a fourth input channel.

[0073] by Figure 1 Taking the test plug-in A in as an example, the first input channel A1 receives the first speed pulse signal X-1 of the speed sensor X, and the second input channel A2 receives the second speed pulse signal X-2 of the speed sensor X; the third input channel A3 receives the first speed pulse signal Y-1 of the speed sensor Y, and the fourth input channel A4 receives the second speed pulse signal Y-2 of the speed sensor Y.

[0074] The first processing unit will calculate the signal data from the first set of input channels to obtain a first speed signal, and the second processing unit will calculate the signal data from the second set of input channels to obtain a second speed signal. It is easy to understand that the calculation principles and data calculation processes of the first and second processing units are the same, but the data they process are not the same data, but data signals from two speed sensors.

[0075] Figure 1 The two processing units in the embodiment are specifically CPUs. It is easy to understand that the processing unit may also be in other forms besides CPU, such as MPU, MCU, etc.

[0076] After obtaining the first and second speed signals, further voting calculations can be performed to obtain a more accurate vehicle speed signal. In other words, this application employs a redundant speed acquisition method, integrating two speed sensors into a single device and implementing a "2-out-of-2" wiring method to output a voting result on the vehicle speed. This results in high acquisition accuracy, eliminates the need for multiple devices, saves equipment resources, and facilitates product maintenance.

[0077] It can be seen that the driving speed acquisition device provided in this application, based on the redundant speed measurement achieved by two speed sensors, further combines the two speed signals for comprehensive voting and calculation, which can effectively reduce data errors, improve the reliability and accuracy of the collected and output driving speed data, and effectively ensure driving safety.

[0078] As a specific embodiment, the vehicle speed acquisition device provided in the embodiment of the present application is based on the above content, wherein the first group of input channels includes a first input channel and a second input channel, and the first input channel and the second input channel are powered and isolated to ensure that the pair of speed pulse signals of the first speed sensor are isolated from each other;

[0079] The second group of input channels includes a third input channel and a fourth input channel. The third input channel and the fourth input channel are powered and isolated from each other to ensure that a pair of speed pulse signals of the second rotation speed sensor are isolated from each other.

[0080] Specifically, the first speed pulse signal and the second speed pulse signal of each speed sensor need to be isolated from each other to ensure the validity of the signals, so the power supply of the speed measurement plug-in must also be isolated.

[0081] As a specific embodiment, the vehicle speed collection device provided in the embodiment of the present application is based on the above content, and the first input channel and the third input channel are both powered by the transmission port of the speed measurement plug-in; the second input channel and the fourth input channel are both powered by the receiving port of the speed measurement plug-in.

[0082] The tachometer plug-in itself provides an isolated 15V voltage. Therefore, the tachometer plug-in's 15V1 port can be used as a power transmission port to power the circuitry collecting the first speed pulse signal X-1 of the speed sensor and the power receiving ports of other plug-ins. To streamline circuit design, the 15V1 port can also power the circuit collecting the first speed pulse signal Y-1 of another speed sensor. The tachometer plug-in provides its 15V2 port as a power receiving port, accepting 15V power from other plug-ins and powering the circuits collecting the remaining two speed pulse signals (X-2 and Y-2).

[0083] See also Figure 2 As shown, another embodiment of the present application discloses a vehicle speed acquisition device. As a specific embodiment, the vehicle speed acquisition device provided in this embodiment of the present application is based on the above content, and has two speed measurement plug-ins, so that the upper-level system can perform redundant determination based on the vehicle speed signals output by the two speed measurement plug-ins; the upper-level system includes the train's onboard system and signaling system.

[0084] Specifically, to further improve the accuracy of speed acquisition, this embodiment incorporates two speed measurement plug-ins, allowing the onboard system to redundantly select the speed signals measured by the two test plug-ins. This means the onboard system performs a redundant vote, improving data reliability and reducing system links and error sources. Of course, in addition to the onboard system, the train also has a signaling system that needs to obtain train speed. Therefore, the signaling system can also perform a redundant vote on the two speed signals. Alternatively, the outputs of the two speed measurement plug-ins can be directly fed into two higher-level systems, with the output of the first speed measurement plug-in connected to the train's onboard system and the output of the second speed measurement plug-in connected to the train's signaling system.

[0085] like Figure 2 As shown, this embodiment Figure 1 Based on the above, a second speed measurement plug-in B is added to the acquisition device. Similarly, the wiring method of speed measurement plug-in B is similar to that of speed measurement plug-in A: the first input channel B1 receives the first speed pulse signal Y-1 of speed sensor Y, and the second input channel B2 receives the second speed pulse signal Y-2 of speed sensor Y; the third input channel B3 receives the first speed pulse signal X-1 of speed sensor X, and the fourth input channel B4 receives the second speed pulse signal X-2 of speed sensor X.

[0086] It is easy for those skilled in the art to understand that, when there is a need to output two driving speed signals, the driving speed acquisition device provided in the present application may not be limited to the form of a combination of two plug-ins, but may also adopt an integrated plug-in with 8 input channels and 2 sets of isolated 15V power outputs.

[0087] As a specific embodiment, the vehicle speed collection device provided in the embodiment of the present application is based on the above content, and the output unit is specifically used to:

[0088] Determining an instantaneous speed value in each sampling period based on a voting calculation of the first speed signal and the second speed signal;

[0089] Determine an average speed value in each statistical period based on voting calculation of the first speed signal and the second speed signal;

[0090] Based on the instantaneous speed value and the average speed value, a driving speed value is determined by using a weighted method in each statistical period.

[0091] It is easy to understand that the sampling period is shorter than the statistical period. By determining a relatively accurate driving speed value in each statistical period, the corresponding driving speed signal can be continuously output.

[0092] As a specific embodiment, the vehicle speed acquisition device provided in the embodiment of the present application is based on the above content, and the output unit determines an instantaneous speed value in each sampling period, specifically for:

[0093] Determining whether a deviation between the first speed signal and the second speed signal in a current sampling period is within a first preset boundary range;

[0094] If yes, then calculate the average of the first speed signal and the second speed signal as the instantaneous speed value;

[0095] If not, it is determined that the voting for the instantaneous speed value in the current sampling period has failed.

[0096] Specifically, with v 1t Represents the first speed signal, expressed as v 2t represents the second speed signal, δ1 represents the parameter of the first preset boundary range, and v t represents the instantaneous velocity value, then:

[0097] When |v 1t -v 2t |<δ1, v t =(v 1t +v 2t ) / 2.

[0098] As a specific embodiment, the vehicle speed collection device provided in the embodiment of the present application is based on the above content, and the output unit determines an average speed value in each statistical period, specifically for:

[0099] Calculating a first average value of the first speed signal in a current statistical period;

[0100] Calculating a second average value of the second speed signal in the current statistical period;

[0101] Determine whether the deviation between the first average value and the second average value in the current statistical period is within a second preset limit range;

[0102] If yes, calculate the average of the first average value and the second average value as the average speed value;

[0103] If not, it is determined that the voting for the average speed value in the current statistical period has failed.

[0104] Specifically, with v 1μ Indicates the first average value, with v 2μ represents the second average value, δ2 represents the parameter of the second preset boundary range, and v μ represents the average speed value, then:

[0105] When |v 1μ -v2μ |<δ2, v μ =(v 1μ +v 2μ ) / 2.

[0106] As a specific embodiment, the vehicle speed collection device provided in the embodiment of the present application is based on the above content, and the output unit uses a weighted method to calculate and determine a vehicle speed value in each statistical period, specifically for:

[0107] Perform arithmetic averaging on each instantaneous speed value successfully voted in the current statistical period to obtain the instantaneous speed average value;

[0108] The instantaneous speed average value and the average speed value of the current statistical period are calculated by weighted method to obtain the driving speed value.

[0109] Specifically, v tμ Indicates the average instantaneous velocity, expressed as v out Represents the output driving speed value, and k1 and k2 represent weight parameters, then:

[0110] v out =k1·v tμ +k2·v out .

[0111] The values ​​of the weight parameters can be set by those skilled in the art as needed. For example, if the real-time performance of the collected speed information is more important, the weight parameter k1 for the instantaneous speed average value can be set to 0.6, and the weight parameter k2 for the average speed value can be set to 0.4.

[0112] See also Figure 3 As shown, the embodiment of the present application discloses a method for collecting driving speed, which mainly includes:

[0113] S201: Receive a pair of speed pulse signals output by a first speed sensor through a first processing unit of the speed measurement plug-in, and generate a first speed signal by solving the signal.

[0114] S202: Receive a pair of speed pulse signals output by the second speed sensor through the second processing unit of the speed measurement plug-in, and generate a second speed signal by calculation.

[0115] S203: Perform voting calculation on the first speed signal and the second speed signal through the output unit of the speed measurement plug-in to determine and output a driving speed signal.

[0116] It can be seen that the method for collecting driving speed disclosed in the embodiment of this application is

[0117] For the specific content of the above-mentioned driving speed collection method, please refer to the detailed introduction of the driving speed collection device mentioned above, which will not be repeated here.

[0118] As a specific embodiment, the method for collecting driving speed disclosed in the embodiment of the present application is based on the above content, and the output unit of the speed measurement plug-in performs voting calculation on the first speed signal and the second speed signal to determine and output the driving speed signal, including:

[0119] Performing voting calculation on the first speed signal and the second speed signal to determine an instantaneous speed value in each sampling period;

[0120] Perform voting calculation on the first speed signal and the second speed signal to determine an average speed value in each statistical period;

[0121] Based on the instantaneous speed value and the average speed value, a driving speed value is determined by using a weighted method in each statistical period.

[0122] As a specific embodiment, the method for collecting driving speed disclosed in the embodiment of the present application is based on the above content and uses a weighted method to calculate and determine a driving speed value in each statistical period, including:

[0123] Perform arithmetic averaging on each instantaneous speed value successfully voted in the current statistical period to obtain the instantaneous speed average value;

[0124] The instantaneous speed average value and the average speed value of the current statistical period are calculated by weighted method to obtain the driving speed value.

[0125] As a specific embodiment, the method for collecting driving speed disclosed in the embodiment of the present application is based on the above content and determines an instantaneous speed value in each sampling period, including:

[0126] Determining whether a deviation between the first speed signal and the second speed signal in a current sampling period is within a first preset boundary range;

[0127] If yes, then calculate the average of the first speed signal and the second speed signal as the instantaneous speed value;

[0128] If not, it is determined that the voting for the instantaneous speed value in the current sampling period has failed.

[0129] As a specific embodiment, the method for collecting driving speed disclosed in the embodiment of the present application is based on the above content and determines an average speed value in each statistical period, including:

[0130] Calculating a first average value of the first speed signal in a current statistical period;

[0131] Calculating a second average value of the second speed signal in the current statistical period;

[0132] Determine whether the deviation between the first average value and the second average value in the current statistical period is within a second preset limit range;

[0133] If yes, calculate the average of the first average value and the second average value as the average speed value;

[0134] If not, it is determined that the voting for the instantaneous speed value in the current statistical period has failed.

[0135] See also Figure 4 As shown, the embodiment of the present application discloses an electronic device, including:

[0136] Memory 301, used for storing computer programs;

[0137] The processor 302 is configured to execute the computer program to implement the steps of any of the above-mentioned methods for collecting vehicle speed.

[0138] Furthermore, an embodiment of the present application also discloses a computer-readable storage medium, in which a computer program is stored. When the computer program is executed by a processor, it is used to implement the steps of any of the above-mentioned methods for collecting vehicle speeds.

[0139] For the specific contents of the above-mentioned electronic device and computer-readable storage medium, please refer to the detailed introduction of the above-mentioned method for collecting driving speed, which will not be repeated here.

[0140] The various embodiments of this application are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Reference can be made to the common and similar parts between the various embodiments. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the method description.

[0141] It should also be noted that, in this application document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. In addition, the terms "comprises", "comprising" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0142] The technical solution provided by the present application is described in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only intended to help understand the method and core ideas of the present application. It should be noted that, for those skilled in the art, without departing from the principles of the present application, several improvements and modifications may be made to the present application, and these improvements and modifications also fall within the scope of protection of the present application.

Claims

1. A vehicle speed collection device, characterized in that: It includes two speed sensors and a speed measuring plug-in; the speed measuring plug-in integrates two processing units and an output unit; The first processing unit is connected to the first speed sensor through the first group of input channels of the speed measurement plug-in, and is used to generate a first speed signal based on a pair of speed pulse signals output by the first speed sensor; The first group of input channels includes a first input channel and a second input channel, and the first input channel and the second input channel are powered and isolated from each other, so as to ensure that a pair of speed pulse signals of the first speed sensor are isolated from each other; The second processing unit is connected to the second speed sensor through the second group of input channels of the speed measurement plug-in, and is used to generate a second speed signal based on a pair of speed pulse signals output by the second speed sensor; The second group of input channels includes a third input channel and a fourth input channel, and the third input channel and the fourth input channel are powered and isolated from each other, so as to ensure that the pair of speed pulse signals of the second speed sensor are isolated from each other; Wherein, the first input channel and the third input channel are both powered by the power transmission port of the speed measurement plug-in; the second input channel and the fourth input channel are both powered by the power receiving port of the speed measurement plug-in; The output unit determines and outputs a vehicle speed signal based on a voting calculation of the first speed signal and the second speed signal; The output unit is specifically used to: determine an instantaneous speed value in each sampling period based on a voting calculation of the first speed signal and the second speed signal; determine an average speed value in each statistical period based on a voting calculation of the first speed signal and the second speed signal; and determine a driving speed value in each statistical period using a weighted method based on the instantaneous speed value and the average speed value.

2. The collection device according to claim 1, characterized in that: When the output unit uses the weighted method to calculate and determine a driving speed value in each statistical period, it is specifically used to: Performing arithmetic averaging on the instantaneous speed values ​​successfully voted out in the current statistical period to obtain an instantaneous speed average value; The instantaneous speed average value and the average speed value of the current statistical period are weightedly calculated to obtain the driving speed value.

3. The collection device according to claim 2, characterized in that: When the output unit determines an instantaneous speed value in each sampling period, it is specifically used to: determining whether a deviation between the first speed signal and the second speed signal in a current sampling period is within a first preset boundary range; If yes, calculating the average of the first speed signal and the second speed signal as the instantaneous speed value; If not, it is determined that the voting for the instantaneous speed value in the current sampling period has failed.

4. The collection device according to claim 3, characterized in that: When the output unit determines an average speed value in each statistical period, it is specifically used to: Calculating a first average value of the first speed signal in a current statistical period; Calculating a second average value of the second speed signal in a current statistical period; Determining whether a deviation between the first average value and the second average value in a current statistical period is within a second preset limit range; If yes, then calculating the average of the first average value and the second average value as the average speed value; If not, it is determined that the voting for the average speed value in the current statistical period has failed.

5. The collection device according to any one of claims 1 to 4, characterized in that: There are two speed measuring plug-ins so that a superior system can make redundant decisions based on the speed signals output by the two speed measuring plug-ins; the superior system includes the onboard system and signal system of the train.

6. A method for collecting driving speed, characterized in that: include: The first processing unit of the speed measurement plug-in receives a pair of speed pulse signals output by the first speed sensor and generates a first speed signal by calculating the signals; The second processing unit of the speed measurement plug-in receives a pair of speed pulse signals output by the second speed sensor and generates a second speed signal by calculating the speed pulse signals; Performing voting calculation on the first speed signal and the second speed signal through the output unit of the speed measurement plug-in to determine and output a driving speed signal; The output unit of the speed measurement plug-in performs voting calculation on the first speed signal and the second speed signal to determine and output a driving speed signal, including: performing voting calculation on the first speed signal and the second speed signal to determine an instantaneous speed value in each sampling period; performing voting calculation on the first speed signal and the second speed signal to determine an average speed value in each statistical period; and based on the instantaneous speed value and the average speed value, using a weighted method to calculate and determine a driving speed value in each statistical period.

7. The collection method according to claim 6, characterized in that: The method of using a weighted method to calculate and determine a driving speed value in each statistical period includes: Performing arithmetic averaging on the instantaneous speed values ​​successfully voted out in the current statistical period to obtain an instantaneous speed average value; The instantaneous speed average value and the average speed value of the current statistical period are weightedly calculated to obtain the driving speed value.

8. The collection method according to claim 7, characterized in that: Determining an instantaneous speed value in each sampling period includes: determining whether a deviation between the first speed signal and the second speed signal in a current sampling period is within a first preset boundary range; If yes, calculating the average of the first speed signal and the second speed signal as the instantaneous speed value; If not, it is determined that the voting for the instantaneous speed value in the current sampling period has failed.

9. The collection method according to claim 8, characterized in that: Determining an average speed value in each statistical period includes: Calculating a first average value of the first speed signal in a current statistical period; Calculating a second average value of the second speed signal in a current statistical period; Determining whether a deviation between the first average value and the second average value in a current statistical period is within a second preset limit range; If yes, then calculating the average of the first average value and the second average value as the average speed value; If not, it is determined that the voting for the instantaneous speed value in the current statistical period has failed.

10. An electronic device, characterized in that: include: memory for storing computer programs; A processor, configured to execute the computer program to implement the steps of the method according to any one of claims 6 to 9.

11. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, which is used to implement the steps of the method according to any one of claims 6 to 9 when executed by a processor.

Images