A locomotive maintenance training device based on laser radar

Abstract

The utility model application discloses a locomotive maintenance training device based on laser radar, including: a step scanning device, a check point sensing device, a video acquisition device, a communication control device, a voice prompt device, an audio acquisition device and a step position indication device, wherein the communication control device is communicatively connected with the step scanning device, the check point sensing device, the video acquisition device, the voice prompt device and the audio acquisition device. The utility model application supports various vehicle inspection methods, is easy to deploy, simple to maintain, has a long service life and is highly portable.

Description

Technical Field

[0001] The utility model relates to the technical field of railway vehicle maintenance training, in particular to a locomotive maintenance training device based on laser radar. Background Art

[0002] In order to ensure the safety of railway locomotives, locomotives need to be inspected regularly. To ensure the standardization of inspections, the relevant railway departments have formulated inspection laws, which stipulate detailed inspection steps, inspection sequence, key parts, components and quality standards. At the same time, the inspection law also stipulates the order and position of the inspectors' steps. Figure 1 This is a schematic diagram of the 25-step inspection method for the C64K (H) high-speed railway freight car. Strictly following the inspection steps, step positions and step sequence in the diagram can ensure the standardization of locomotive inspection, thereby avoiding missing inspection points and minimizing safety hazards. Therefore, in order to make inspectors strictly follow the above inspection method to perform locomotive maintenance, it is necessary to conduct strict and standardized training for inspectors. During the training process, step detection is carried out and the training effect is judged or the wrong action is corrected according to the detected step position sequence. This has become a technical problem that must be solved by the locomotive maintenance training device.

[0003] There are two main methods of step detection technology in the prior art:

[0004] Method 1: Fixed mechanical foot switch. Dig a pit at the step position, embed the foot switch, and then make a groove on the ground to lay the foot switch signal line in it. The signal of whether the foot switch is stepped on is transmitted to the background signal processing system through the signal line. When the upper cover of the foot switch is not stepped on, it is lifted by the spring, and the internal travel switch is in a non-contact state; when the foot switch is stepped on, the internal spring is compressed, and the internal travel switch is in a contact state; the contact state of the internal travel switch is uploaded to the background signal processing system in real time, thereby realizing the detection of the current step position. However, the disadvantages of this technical solution are: it requires a fixed dedicated practice site, the amount of engineering work is large, pits need to be dug and grooves need to be made on the ground for wiring, it does not support multiple vehicle inspection methods, and supports at most two vehicle inspection methods, that is, a set of vehicle inspection method foot switches are installed on both sides. In addition, the foot switch is buried underground, and the daily maintenance workload is large.

[0005] Method 2: Movable foot switch. Figure 2The principle of this scheme is: when the foot is on the foot switch, the conductive upper cover plate and the conductive lower cover plate are in contact; when the foot is not on the foot switch, the conductive upper cover plate and the conductive lower cover plate are not in contact. The upper and lower covers are judged to determine whether the foot switch is stepped on by judging whether they are in contact. The contact signal of the upper and lower covers is uploaded to the background signal processing system through the wireless communication module for processing. However, the disadvantages of this technical scheme are: the switch is difficult to fix on the ground and is easy to be kicked away. The inspector is prone to slipping and falling when stepping on it, which affects the inspector's training; frequent use will cause the conductive upper cover plate, the conductive lower cover plate and the isolation switch to deform, and the signal cannot be collected normally after stepping on the foot switch, making the training equipment function invalid; there are many foot switches, and the charging workload is large. Summary of the invention

[0006] In view of the above-mentioned defects or deficiencies in the prior art, the utility model provides a locomotive maintenance training device based on laser radar, which can solve all or part of the above-mentioned technical problems.

[0007] In one aspect of the utility model, a locomotive maintenance training device based on laser radar is provided, comprising:

[0008] A step scanning device, a check sensing device, a video acquisition device, a communication control device, a voice prompt device, an audio acquisition device and a step position indicating device, wherein the communication control device is communicatively connected with the step scanning device, the check sensing device, the video acquisition device, the voice prompt device and the audio acquisition device;

[0009] The step scanning device comprises a laser radar and a first communication module in communication connection, the first communication module is wirelessly connected to the communication control device, the scanning plane of the laser radar is parallel to the ground and is set at a predetermined height from the ground, and is used to obtain the position data of the step;

[0010] The inspection sensing device includes an information button and an inspection hammer adsorbed on the part of the vehicle body to be inspected, the information button is provided with an adsorption device and a radio frequency tag, the inspection hammer is connected with the radio frequency tag and the communication control device through wireless communication, and the inspection hammer is used to obtain the number information in the radio frequency tag and send it to the communication control device;

[0011] The video acquisition device includes a camera, a pan / tilt head and a second communication module, and the second communication module is wirelessly connected to the communication control device;

[0012] The audio collection device is used to collect the voice information of the inspector;

[0013] The communication control device includes a control unit and a communication unit. The control unit is wirelessly connected to the first communication module, the second communication module, the inspection hammer, the voice prompt device, and the audio acquisition device through the communication unit. The control unit is used to obtain collected data and send control instructions.

[0014] Furthermore, the adsorption device of the information button is a magnetic adsorption element or a vacuum adsorption element.

[0015] Furthermore, the inspection hammer includes a radio frequency signal transmitter and a radio frequency signal receiver which are communicatively connected to the radio frequency tag, and a number information sending module which is wirelessly connected to the communication unit.

[0016] Furthermore, a photoelectric detector for detecting whether the scanning plane of the laser radar is horizontal is arranged at different positions around the step scanning device and is set facing the step scanning device; the photoelectric detector includes a plurality of horizontally arranged laser receivers, each laser receiver is correspondingly provided with an indicator light, and the laser receiver is used to receive the laser beam emitted by the laser radar and light up the corresponding indicator light after successful reception.

[0017] Furthermore, the step position indicating device is a step indicating sticker pasted on the ground, or a step indicating blanket laid on the ground.

[0018] Furthermore, the step scanning device is a box-type device or an integrated device, which is arranged in front of the trainee's moving direction.

[0019] Furthermore, there are multiple step scanning devices, and the radar scanning surfaces of the multiple step scanning devices cover the positions of all steps.

[0020] Furthermore, the first communication module and the second communication module are wireless routers or wireless bridges.

[0021] Furthermore, the radio frequency tag is an RFID tag or an NFC tag.

[0022] Furthermore, the communication unit includes a third communication module communicatively connected to the first communication module, a fourth communication module communicatively connected to the second communication module, a radio frequency receiving module for receiving numbering information, and an audio receiving module.

[0023] The locomotive maintenance training device based on laser radar provided by the utility model has the following beneficial effects:

[0024] (1) Universality. It supports all existing inspection methods for locomotives and vehicles and new inspection methods for new locomotive and vehicle models. It does not require a dedicated training ground and can be used for a long time after a single investment.

[0025] (2) Portability. The number of devices required is small, and the devices communicate wirelessly. If training is required in different workshops, the training department can just transport the equipment to that workshop, and there is no need for inspectors to be trained in other places.

[0026] (3) Easy to deploy. No engineering construction is required, just place the step scanning device near the locomotive or vehicle;

[0027] (4) Easy to use. The placement of the step scanning device does not occupy the inspector's workspace. The training scenario is consistent with the actual application scenario. The inspector will not damage the step scanning device during the training process, and the step scanning device will not affect the inspector's inspection practice.

[0028] (5) Long service life. During the training process, there is no contact between the equipment and the inspector, which reduces the possibility of human damage;

[0029] (6) Easy maintenance. Inspection training only requires 2 to 3 step scanning devices. Since the step scanning device is small in size and portable, there is no contact with the inspector during training, so the daily maintenance workload is very small. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0031] Figure 1 It is a schematic diagram of the 25-step vehicle inspection method for a speed-up railway freight car C64K (H) in the prior art;

[0032] Figure 2 It is a schematic diagram of the system structure of a movable foot switch in the prior art;

[0033] Figure 3 is a system structure diagram of a locomotive maintenance training device based on laser radar provided by an embodiment of the present application;

[0034] Figure 4 This is a schematic diagram of a scenario of a locomotive maintenance training device based on laser radar provided by an embodiment of the present application;

[0035] Figure 5 This is a scanning point cloud data diagram of a laser radar provided in an embodiment of the present application. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms "a", "said" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0038] It should be understood that although the terms first, second, third, etc. may be used to describe the acquisition modules in the embodiments of the present invention, the acquisition modules should not be limited to these terms. These terms are only used to distinguish the acquisition modules from each other.

[0039] The word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to determining" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)", depending on the context.

[0040] It should be noted that the directional words such as "upper", "lower", "left", and "right" described in the embodiments of the present invention are described at the angles shown in the accompanying drawings and should not be understood as limiting the embodiments of the present invention. In addition, in the context, it should also be understood that when it is mentioned that an element is formed "on" or "under" another element, it can not only be formed directly "on" or "under" another element, but also be formed "on" or "under" another element indirectly through an intermediate element.

[0041] See also Figure 3 A locomotive maintenance training device 100 based on laser radar in this embodiment includes: a step scanning unit 101, a check point perception unit 106, a video acquisition unit 102, a communication control unit, a voice prompt unit 107, an audio acquisition unit 108 and a step position indication unit, wherein the communication control unit is communicatively connected with the step scanning unit 101, the check point perception unit 106, the video acquisition unit 102, the voice prompt unit 107, and the audio acquisition unit 108.

[0042] Figure 4 1 is a schematic diagram of a scenario of a locomotive maintenance training device 100 based on laser radar according to this embodiment.

[0043] Specifically, the locomotive maintenance training device 100 of this embodiment includes:

[0044] The step scanning unit 101 includes a laser radar, a wireless bridge (or a WIFI module) and a power supply, and the wireless bridge is connected to the communication unit. Among them, the laser radar uses a single-beam laser transmitter to rotate at a constant speed inside the radar, and emits a laser once every rotation angle. After polling a certain angle, a complete frame of data is formed, so the data of the laser radar can be regarded as a row of dot matrix at the same height. The scanning plane of the laser radar in this embodiment is parallel to the ground and is set at a predetermined height from the ground, which is used to obtain the position data of the step. Preferably, the radar scanning surface is parallel to the ground and is about 15 cm above the ground, which has the best effect. More preferably, the step scanning unit 101 is a box-type device or an integrated device, which is set on the front side of the trainer's travel direction. The radar scanning surface should be able to cover all step positions. If there is an obstruction, multiple step scanning units 101 can be placed, and the radar scanning surfaces of multiple step scanning devices should be able to cover all step positions. Figure 5 It is a point cloud data diagram of the step position obtained by the laser radar of this embodiment.

[0045] Furthermore, the training device may also include a photoelectric detector 109 for detecting whether the scanning plane of the laser radar is horizontal. Specifically, the photoelectric detector 109 is arranged at different positions around the step scanning unit 101 and is arranged facing the step scanning unit 101. The photoelectric detector 109 includes a number of laser receivers arranged horizontally, and each laser receiver is correspondingly provided with an indicator light. The laser receiver is used to receive the laser beam emitted by the laser radar and light up the corresponding indicator light after successful reception. When the user adjusts the laser scanning plane of the step scanning unit 101, the user can judge whether the current scanning plane of the laser radar is horizontal according to the number of indicator lights that light up.

[0046] The inspection sensing unit 106 includes an information button and an inspection hammer adsorbed on the part to be inspected on the locomotive body. The information button is provided with an adsorption device and a radio frequency tag (or radio frequency card). The inspection hammer is wirelessly connected with the radio frequency tag and the communication unit. The inspection hammer is used to obtain the number information in the radio frequency tag and send it to the communication unit. The control unit identifies the number information received by the communication unit to confirm whether the inspector's inspection hammer hits the predetermined inspection position of the locomotive. Preferably, the adsorption device of the information button adopts a magnetic adsorption element or a vacuum adsorption element, and the radio frequency tag is an RFID tag or an NFC tag. The inspection hammer is provided with an RF signal transmitter and an RF signal receiver corresponding to the type of RF tag. When the inspection hammer hits the information button, the RF signal transmitter of the inspection hammer sends radio waves to the RF tag or RF card. The RF tag or RF card receives the RF signal and generates current through electromagnetic induction. The current drives the RF tag or RF card to send the number information in the card. The RF signal receiver receives the RF signal with the number information, and then sends it to the communication unit through the number information transmission module. The control unit can identify whether the inspector hits the information button at the predetermined position of the locomotive by identifying the number information, thereby judging the training effect of the inspector.

[0047] The video acquisition unit 102 includes a camera, a pan-tilt head and a WIFI module (or a wireless bridge). The camera is arranged on the pan-tilt head, and the WIFI module (or a wireless bridge) is wirelessly connected to the communication unit.

[0048] The audio collection unit 108 is preferably a wireless headset. Specifically, during the assessment phase of the training, the trainees are required to wear wireless headsets to collect the information data of the trainees' oral inspection and store the audio data. The assessment teacher plays back the audio data through the control unit to check whether the "oral information" of the trainees during the inspection is standard and whether the information button is checked in place.

[0049] The communication control device includes a control unit 104 and a communication unit 105. The communication unit 105 includes a component for wireless communication with the wireless bridge, the WIFI module, the inspection hammer, the voice prompt unit 107, and the audio acquisition unit 108, and is used to obtain the collected data and transmit the control instructions issued by the control unit 104. The control unit 104 is used to collect data through the communication unit 105, determine whether the acquired step action information is correct, determine whether the inspection action of the inspected part is complete, and the collected data and the judgment results are recorded in the database and displayed on the interface. The control unit can be a PDA, a laptop, a PC or a smart phone, etc.

[0050] The voice prompt unit 107 is preferably a Bluetooth speaker or wireless headset, so as to provide voice prompt guidance during training and provide voice prompts for incorrect actions. The control unit can directly broadcast the trainer's voice through the voice prompt unit 107, or convert the broadcast text into sound data and transmit it to the voice prompt unit 107 through the headphone jack line of the control unit.

[0051] The step position indicating unit is a step position indicating sticker 103 pasted on the ground, or a step indicating blanket laid on the ground, so as to facilitate the inspector to practice the step action according to the step indicating mark.

[0052] The working principle of the laser radar-based locomotive maintenance training device of this embodiment is as follows: the inspection method stipulates the step position trajectory and the parts to be inspected at each step, and the step scanning unit 101 collects radar point cloud to detect whether the step action is correct; the inspection point perception unit 106 is used to detect whether the parts to be inspected are fully inspected; during the training process, guidance is given through voice, and voice prompts are given for wrong steps, missed steps or missed parts to be inspected so that the inspector can correct them; during the assessment process, no voice guidance is given, and after the inspector has completed the operation, points are deducted for wrong steps, missed steps, and missed parts, and the accuracy and proficiency of the inspector in mastering the inspection method are determined by the test scores.

[0053] The above description is only a preferred embodiment of the utility model. Those skilled in the art should understand that the disclosure scope involved in the utility model is not limited to the technical solution formed by a specific combination of the above technical features, but also should cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above disclosed concept. For example, the above features are replaced with the technical features with similar functions disclosed in the utility model (but not limited to) by each other to form a technical solution.

Claims

1. A locomotive maintenance training device based on laser radar, characterized in that: include: A step scanning device, a check sensing device, a video acquisition device, a communication control device, a voice prompt device, an audio acquisition device and a step position indicating device, wherein the communication control device is communicatively connected with the step scanning device, the check sensing device, the video acquisition device, the voice prompt device and the audio acquisition device; The step scanning device comprises a laser radar and a first communication module in communication connection, the first communication module is wirelessly connected to the communication control device, the scanning plane of the laser radar is parallel to the ground and is set at a predetermined height from the ground, and is used to obtain the position data of the step; The inspection sensing device includes an information button and an inspection hammer adsorbed on the part of the vehicle body to be inspected, the information button is provided with an adsorption device and a radio frequency tag, the inspection hammer is connected with the radio frequency tag and the communication control device through wireless communication, and the inspection hammer is used to obtain the number information in the radio frequency tag and send it to the communication control device; The video acquisition device includes a camera, a pan / tilt head and a second communication module, and the second communication module is wirelessly connected to the communication control device; The audio collection device is used to collect the voice information of the inspector; The communication control device includes a control unit and a communication unit. The control unit is wirelessly connected to the first communication module, the second communication module, the inspection hammer, the voice prompt device, and the audio acquisition device through the communication unit. The control unit is used to obtain collected data and send control instructions.

2. The locomotive maintenance training device based on laser radar according to claim 1 is characterized in that: The adsorption device of the information button is a magnetic adsorption element or a vacuum adsorption element.

3. The locomotive maintenance training device based on laser radar according to claim 1 is characterized in that: The inspection hammer includes a radio frequency signal transmitter and a radio frequency signal receiver which are communicatively connected to the radio frequency tag, and a number information sending module which is wirelessly connected to the communication unit.

4. The locomotive maintenance training device based on laser radar according to claim 1 is characterized in that Also includes: A photoelectric detector for detecting whether the scanning plane of the laser radar is horizontal, wherein the photoelectric detector is arranged at different positions around the step scanning device and faces the step scanning device; The photoelectric detector includes a plurality of laser receivers arranged horizontally, each laser receiver is provided with an indicator light corresponding to the laser receiver, and the laser receiver is used to receive the laser beam emitted by the laser radar and light up the corresponding indicator light after successful reception.

5. The locomotive maintenance training device based on laser radar according to claim 1 is characterized in that: The step position indicating device is a step indicating sticker pasted on the ground, or a step indicating blanket laid on the ground.

6. The locomotive maintenance training device based on laser radar according to claim 1, characterized in that: The step scanning device is a box-type device or an integrated device, which is arranged at the front side of the trainee's moving direction.

7. The locomotive maintenance training device based on laser radar according to claim 6 is characterized in that: There are multiple step scanning devices, and the radar scanning surfaces of the multiple step scanning devices cover the positions of all steps.

8. The locomotive maintenance training device based on laser radar according to claim 1, characterized in that: The first communication module and the second communication module are wireless routers or wireless bridges.

9. The locomotive maintenance training device based on laser radar according to claim 1, characterized in that: The radio frequency tag is an RFID tag or an NFC tag.

10. The locomotive maintenance training device based on laser radar according to claim 1, characterized in that: The communication unit includes a third communication module communicatively connected to the first communication module, a fourth communication module communicatively connected to the second communication module, a radio frequency receiving module for receiving numbering information, and an audio receiving module.

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