阅读说明：本技术 一种轨检数据采集装置及方法 (Rail inspection data acquisition device and method ) 是由 刘鹏 李永江 赵齐乐 朱惊雷 李光允 陈小朋 王虹博 曾建勇 于 2020-07-31 设计创作，主要内容包括：本发明公开了一种轨检数据采集装置及方法,涉及轨道检测技术领域。轨检数据采集装置包括：里程传感器、轨距传感器、惯导传感器以及控制电路板；控制电路板上设置有控制单元和通信串口；里程传感器和轨距传感器分别用于采集里程数据和轨距数据；惯导传感器用于采集位姿数据和时间信息；里程传感器、轨距传感器和惯导传感器的数据接口分别与控制单元的采集接口通信连接,以分别将各自采集的数据传输至控制单元；控制单元将轨道数据信息与时间信息整合后通过通信串口发送给处理终端,实现了轨道检测结果与时间的同步,使处理终端可以实时获取采集的数据和时间信息,减轻了事后收集、处理、修复定位数据等工作。(The invention discloses a rail inspection data acquisition device and method, and relates to the technical field of rail inspection. The track inspection data acquisition device comprises: the system comprises a mileage sensor, a track gauge sensor, an inertial navigation sensor and a control circuit board; the control circuit board is provided with a control unit and a communication serial port; the mileage sensor and the track gauge sensor are respectively used for acquiring mileage data and track gauge data; the inertial navigation sensor is used for acquiring pose data and time information; data interfaces of the mileage sensor, the track gauge sensor and the inertial navigation sensor are respectively in communication connection with an acquisition interface of the control unit so as to respectively transmit the acquired data to the control unit; the control unit integrates the track data information and the time information and then sends the track data information and the time information to the processing terminal through the communication serial port, so that the synchronization of the track detection result and the time is realized, the processing terminal can acquire the acquired data and the time information in real time, and the work of collecting, processing, repairing and positioning data and the like after the work is reduced.)

1. A rail inspection data acquisition device, comprising: the system comprises a mileage sensor, a track gauge sensor, an inertial navigation sensor and a control circuit board; the control circuit board is provided with a control unit and a communication serial port;

the mileage sensor and the track gauge sensor are respectively used for acquiring mileage data and track gauge data; the inertial navigation sensor is used for acquiring pose data and time information; the data interfaces of the mileage sensor, the track gauge sensor and the inertial navigation sensor are respectively in communication connection with the acquisition interface of the control unit so as to respectively transmit the acquired data to the control unit;

the control unit is in communication connection with a processing terminal through the communication serial port and is used for transmitting the mileage data, the track gauge data, the pose data and the time information to the processing terminal.

2. The apparatus of claim 1, wherein the orbit inspection data acquisition device further comprises: a laser sensor;

the laser sensor is used for acquiring track profile data; the data interface of the laser sensor is also in communication connection with the acquisition interface of the control unit so as to transmit the track profile data to the control unit, so that the control unit transmits the track profile data to the processing terminal.

3. The device of claim 2, wherein the control interface of the laser sensor is further in communication connection with the control interface of the control unit, so that the control unit controls the laser sensor to perform data acquisition according to the time information.

4. The device of claim 3, wherein the control interface of the laser sensor is communicatively coupled to the control interface of the control circuit board via an external trigger circuit.

5. The device of claim 2, wherein the control circuit board is further provided with a first voltage reduction circuit and a second voltage reduction circuit;

the input end of the first voltage reduction circuit is used for being connected with a power supply and is used for carrying out first voltage reduction processing on the voltage of the power supply; the output end of the first voltage reduction circuit is connected with the input end of the second voltage reduction circuit so as to carry out second voltage reduction treatment on the first voltage obtained by the first voltage reduction treatment; the output end of the second voltage reduction circuit is connected with the power supply end of the control unit, and the second voltage after the second voltage reduction processing is adopted to supply power to the control unit.

6. The apparatus according to claim 5, wherein the output terminal of the second voltage-reducing circuit is further connected to the power supply terminals of the track gauge sensor, the inertial navigation sensor, the laser sensor, and the communication serial port, respectively, so as to supply power to the track gauge sensor, the inertial navigation sensor, the laser sensor, and the communication serial port by using the second voltage.

7. The device of claim 5, wherein the control circuit board further comprises: the input end of the boosting circuit is connected with the output end of the second voltage reduction circuit so as to boost the second voltage; the output end of the boosting circuit is connected with the power supply end of the mileage sensor, so that the third voltage subjected to boosting processing is adopted to supply power to the mileage sensor.

8. The device of claim 6, wherein the control circuit board further comprises: the system comprises three groups of first isolation units and second isolation units, wherein each group of first isolation units comprises an acquisition isolation circuit and a power supply isolation circuit; the second isolation unit includes: the data isolation circuit and the power supply isolation circuit;

the acquisition interface of the control unit is respectively in communication connection with the data interfaces of the track gauge sensor, the inertial navigation sensor and the laser sensor through the acquisition isolation circuits in the three groups of first isolation units; the output end of the second voltage reduction circuit is respectively connected with the power supply ends of the track gauge sensor, the inertial navigation sensor and the laser sensor through power supply isolation circuits in the three groups of first isolation units;

the output interface of the control unit is in communication connection with the data end of the communication serial port through the data isolation circuit of the second isolation unit, and the output end of the second voltage reduction circuit is connected with the power supply end of the communication serial port through the power supply isolation circuit of the second isolation unit.

9. The apparatus of claim 7, wherein the control circuit board further comprises: a third isolation unit; the third isolation unit includes: the acquisition isolation circuit and the power supply isolation circuit;

the acquisition interface of the control unit is in communication connection with the data interface of the mileage sensor through an acquisition isolation circuit in the third isolation unit;

the output end of the booster circuit is connected with the power supply end of the mileage sensor through a power supply isolation circuit in the third isolation unit.

10. A method for acquiring data of an orbit detection, which is applied to a control unit in the orbit detection data acquisition device of any one of claims 1-9, and comprises the following steps:

acquiring mileage data acquired by the mileage sensor, track gauge data acquired by the track gauge sensor, pose data acquired by the inertial navigation sensor and time information;

and transmitting the mileage data, the track gauge data, the pose data and the time information to the processing terminal through a communication serial port.

Technical Field

The invention relates to the technical field of rail detection, in particular to a rail detection data acquisition device and a rail detection data acquisition method.

Background

In recent years, with the rapid development of the rail transit industry in China, the mileage of a running line is rapidly increased and increasingly busy, and the safety and the comfort of train running become more and more important. The irregularity of the track seriously affects the high-speed and stable running of the train and even endangers the running safety. The maintenance and detection tasks of checking the track state, guiding maintenance and guaranteeing driving safety become heavy day by day.

Disclosure of Invention

The invention aims to provide a track inspection data acquisition device and a track inspection data acquisition method, and aims to solve the technical problems that data of track acquisition equipment cannot be output immediately and does not correspond to time in the prior art.

The embodiment of the invention is realized by the following steps:

in one aspect of the embodiments of the present invention, a rail inspection data acquisition apparatus is provided, including: the system comprises a mileage sensor, a track gauge sensor, an inertial navigation sensor and a control circuit board; the control circuit board is provided with a control unit and a communication serial port;

the mileage sensor and the track gauge sensor are respectively used for acquiring mileage data and track gauge data; the inertial navigation sensor is used for acquiring pose data and time information; data interfaces of the mileage sensor, the track gauge sensor and the inertial navigation sensor are respectively in communication connection with an acquisition interface of the control unit so as to respectively transmit the acquired data to the control unit;

the control unit is in communication connection with the processing terminal through the communication serial port and is used for transmitting the mileage data, the track gauge data, the pose data and the time information to the processing terminal.

Optionally, the rail inspection data acquisition device further includes: a laser sensor;

the laser sensor is used for acquiring track profile data; the data interface of the laser sensor is also in communication connection with the acquisition interface of the control unit to transmit the track profile data to the control unit, so that the control unit transmits the track profile data to the processing terminal.

Optionally, the control interface of the laser sensor is further in communication connection with the control interface of the control unit, so that the control unit controls the laser sensor to perform data acquisition according to the time information.

Optionally, the control interface of the laser sensor is in communication connection with the control interface of the control circuit board through an external trigger circuit.

Optionally, the control circuit board is further provided with a first voltage reduction circuit and a second voltage reduction circuit;

the input end of the first voltage reduction circuit is used for being connected with a power supply and is used for carrying out first voltage reduction processing on the voltage of the power supply; the output end of the first voltage reduction circuit is connected with the input end of the second voltage reduction circuit so as to carry out second voltage reduction treatment on the first voltage obtained by the first voltage reduction treatment; the output end of the second voltage reduction circuit is connected with the power supply end of the control unit, and the second voltage after the second voltage reduction processing is adopted to supply power to the control unit.

Optionally, the output end of the second voltage reduction circuit is further connected to the track gauge sensor, the inertial navigation sensor, the laser sensor, and a power supply end of the communication serial port, so that the second voltage is used for supplying power to the track gauge sensor, the inertial navigation sensor, the laser sensor, and the communication serial port.

Optionally, the control circuit board is further provided with: the input end of the boost circuit is connected with the output end of the second voltage reduction circuit so as to boost the second voltage; the output end of the boosting circuit is connected with the power supply end of the mileage sensor, and the boosted third voltage is used for supplying power to the mileage sensor.

Optionally, the control circuit board is further provided with: the system comprises three groups of first isolation units and second isolation units, wherein each group of first isolation units comprises an acquisition isolation circuit and a power supply isolation circuit; the second isolation unit includes: the data isolation circuit and the power supply isolation circuit;

the acquisition interface of the control unit is respectively in communication connection with the data interfaces of the track gauge sensor, the inertial navigation sensor and the laser sensor through acquisition isolation circuits in the three groups of first isolation units; the output end of the second voltage reduction circuit is respectively connected with the power supply ends of the track gauge sensor, the inertial navigation sensor and the laser sensor through power supply isolation circuits in the three groups of first isolation units;

the output interface of the control unit is in communication connection with the data end of the communication serial port through the data isolation circuit of the second isolation unit, and the output end of the second voltage reduction circuit is connected with the power supply end of the communication serial port through the power supply isolation circuit of the second isolation unit.

Optionally, the control circuit board is further provided with: a third isolation unit; the third isolation unit includes: the acquisition isolation circuit and the power supply isolation circuit;

the acquisition interface of the control unit is in communication connection with the data interface of the mileage sensor through an acquisition isolation circuit in a third isolation unit;

the output end of the booster circuit is connected with the power supply end of the mileage sensor through a power supply isolation circuit in the third isolation unit.

In another aspect of the embodiments of the present invention, there is provided a method for acquiring rail inspection data, where the method is applied to a control unit in any one of the above-mentioned rail inspection data acquisition devices, and the method includes:

acquiring mileage data acquired by a mileage sensor, track gauge data acquired by a track gauge sensor, pose data acquired by an inertial navigation sensor and time information;

and transmitting the mileage data, the track gauge data, the pose data and the time information to a processing terminal through a communication serial port.

The invention has the beneficial effects that:

the embodiment of the application provides a rail inspection data acquisition device and a method, and the device comprises: the system comprises a mileage sensor, a track gauge sensor, an inertial navigation sensor and a control circuit board; the control circuit board is provided with a control unit and a communication serial port; the mileage sensor and the track gauge sensor are respectively used for acquiring mileage data and track gauge data; the inertial navigation sensor is used for acquiring pose data and time information; data interfaces of the mileage sensor, the track gauge sensor and the inertial navigation sensor are respectively in communication connection with an acquisition interface of the control unit so as to respectively transmit the acquired data to the control unit; the control unit is in communication connection with the processing terminal through the communication serial port and is used for transmitting the mileage data, the track gauge data, the pose data and the time information to the processing terminal. Above-mentioned data acquisition device is examined to rail has integrated mileage sensor, gauge sensor and inertial navigation sensor, the control unit is after receiving the data and the time information that above-mentioned sensor gathered, correspond the data of gathering with the time and send to processing terminal through the communication serial ports immediately, solved the inaccurate technical problem of the real-time acquisition time of multidata, make processing terminal can acquire the data and the time information of gathering in real time, simultaneously, alleviateed work such as collection after affairs, processing, repair the locating data greatly.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a rail inspection data acquisition device according to an embodiment of the present invention;

fig. 2 is a second schematic structural diagram of a rail inspection data acquisition device according to an embodiment of the present invention;

fig. 3 is a third schematic structural diagram of a rail inspection data acquisition device according to an embodiment of the present invention;

fig. 4 is a fourth schematic structural diagram of the rail inspection data acquisition device according to the embodiment of the present invention;

fig. 5 is a flowchart of a method for acquiring rail inspection data according to an embodiment of the present invention.

Icon: 100-a rail inspection data acquisition device; 101-mileage sensor; 102-gauge sensors; 103-inertial navigation sensor; 104-a laser sensor; 105-a control circuit board; 1051-a control unit; 1052-a first voltage reduction circuit; 1053-a second voltage reduction circuit; 1054-a boost circuit; 1055-a first isolation unit; 1056-a second isolation unit; 1057-a third isolation unit; 1058-a communication serial port; 200-processing the terminal.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Fig. 1 is a schematic structural diagram of a track inspection data acquisition device 100 according to an embodiment of the present invention; as shown in fig. 1, the orbit detection data acquisition apparatus 100 includes: a mileage sensor 101, a track gauge sensor 102, an inertial navigation sensor 103 and a control circuit board 105; the control circuit board 105 is provided with a control unit 1051 and a communication serial port 1058; the mileage sensor 101 and the track gauge sensor 102 are respectively used for acquiring mileage data and track gauge data; the inertial navigation sensor 103 is used for acquiring pose data and time information; data interfaces of the mileage sensor 101, the track gauge sensor 102 and the inertial navigation sensor 103 are respectively in communication connection with an acquisition interface of the control unit 1051 so as to respectively transmit respective acquired data to the control unit 1051; the control unit 1051 is in communication connection with the processing terminal 200 through the communication serial port 1058, and is configured to transmit the mileage data, the track gauge data, and the pose data to the processing terminal 200 through the communication serial port 1058 according to a preset frequency after being time-stamped.

In this embodiment, optionally, the mileage sensor 101 is a hall sensor, and is installed on the wheel of the track detection vehicle, and the high-frequency pulse signal sent by the mileage sensor 101 is collected by supplying power to the mileage sensor 101, so that the direction and the rolling mileage of the wheel of the track detection vehicle can be accurately determined, and the error can be kept within 0.2% under the non-skid condition. The gauge sensor 102 is a slide rheostat which can convert displacement mileage into resistance change, and gauge change information can be measured by supplying power to the slide rheostat and collecting voltage change of the slide rheostat. Inertial navigation sensor 103 includes the accelerometer, the gyroscope, inclinometer and positioning sensor, through setting up positioning device and accelerometer on the track inspection vehicle, the gyroscope, the inclinometer, mileage sensor 101, track gauge sensor 102 gathers simultaneously and waits to examine orbital information, and send for the control unit 1051, the control unit 1051 will wait to examine orbital information and beat the timestamp after sending for processing terminal 200, processing terminal 200 carries out multisource information fusion with the information of gathering, acquire and wait to examine orbital high accuracy, the position of high stability, speed and gesture information, thereby orbital geometric status of more accurate aassessment.

Optionally, the processing terminal 200 may be a computer, a mobile phone, or other device having a data analysis function, and the processing terminal 200 analyzes the acquired track data synchronized with time, so that the processing terminal 200 can display the health condition of the track to be detected in real time. The processing terminal 200 can also carry out optimal estimation of the measured value through Kalman filtering by establishing an irregularity and combined navigation error model of the track to be detected, greatly improves the efficiency of detecting the track to be detected while ensuring the relative measurement precision of submillimeter-level, shortens the operation time, and effectively improves the detection efficiency of the track detection vehicle.

Optionally, the control unit 1051 may be an mcu (microcontroller unit), i.e., a micro control unit. The control unit 1051 can also be an embedded STM32, the control unit 1051 controls each sensor to acquire data with mu s-level response by utilizing the advantage of high-speed response of the embedded STM32, and the control unit 1051 synchronously collects related data and sends the related data to the processing terminal 200.

In summary, the embodiment of the present application provides an orbit detection data acquisition device 100, which includes: a mileage sensor 101, a track gauge sensor 102, an inertial navigation sensor 103 and a control circuit board 105; the control circuit board 105 is provided with a control unit 1051 and a communication serial port 1058; the mileage sensor 101 and the track gauge sensor 102 are respectively used for acquiring mileage data and track gauge data; the inertial navigation sensor 103 is used for acquiring pose data and time information; data interfaces of the mileage sensor 101, the track gauge sensor 102 and the inertial navigation sensor 103 are respectively in communication connection with an acquisition interface of the control unit 1051 so as to respectively transmit the acquired data to the control unit 1051; the control unit 1051 is in communication connection with the processing terminal 200 through the communication serial port 1058, and is configured to transmit the mileage data, the track gauge data, the pose data, and the time information to the processing terminal 200. The track inspection data acquisition device 100 integrates the mileage sensor 101, the track gauge sensor 102 and the inertial navigation sensor 103, the control unit 1051 immediately sends data and time information acquired by the sensors to the processing terminal 200 through the communication serial port 1058 after receiving the data and the time information, so that the processing terminal 200 can immediately acquire the acquired data and time information, the technical problem of inaccurate real-time acquisition time of multiple data is solved, and meanwhile, the work of collecting, processing, repairing positioning data and the like after events is greatly reduced.

Optionally, on the basis of fig. 1, an alternative implementation of the rail inspection data acquisition device 100 is further provided in an embodiment of the present invention. Fig. 2 is a second schematic structural diagram of the rail inspection data acquisition device 100 according to the embodiment of the present invention; as shown in fig. 2, the orbit detection data acquisition apparatus 100 further includes: a laser sensor 104; the laser sensor 104 is used for collecting track profile data; the track profile data can be obtained by photographing the track to be detected without directly contacting with the track to be detected; the data interface of the laser sensor 104 is also communicatively connected with the acquisition interface of the control unit 1051 to transmit the track profile data to the control unit 1051, such that the control unit 1051 transmits the track profile data to the processing terminal 200.

In this embodiment, for example, the laser sensor 104 may be two-dimensional laser sensors 104, where the two-dimensional laser sensors 104 respectively face two sides of the track to be detected, and emit continuous laser, so as to continuously scan the track profile data of the two sides of the track to be detected, and more comprehensively obtain information of the two tracks of the track to be detected.

The data acquisition requires high-precision synchronization, namely, various types of data are acquired at the same time point, so that the data are analyzed and calculated. In any of the above technical solutions, optionally, the control interface of the laser sensor 104 is further in communication connection with the control interface of the control unit 1051, and the control unit 1051 controls the laser sensor 104 to photograph the track to be detected at the same position and time with the mileage sensor 101, the track gauge sensor 102, and the inertial navigation sensor 103, so as to collect profile data of the track to be detected, and ensure that the laser sensor 104 collects profile information of the tracks on both sides at the same time, thereby solving the technical problem that the track inspection equipment in the prior art cannot synchronize the laser sensor 104.

In any of the above technical solutions, optionally, the control interface of the laser sensor 104 is in communication connection with the control interface of the control circuit board 105 through an external trigger circuit. The external trigger circuit is used to provide a control pole current to the laser sensor 104 at a preset frequency to turn it on.

Optionally, on the basis of fig. 2, an alternative implementation of the rail inspection data acquisition device 100 is further provided in an embodiment of the present invention. Fig. 3 is a third schematic structural diagram of the rail inspection data acquisition device 100 according to the embodiment of the present invention; as shown in fig. 3, since the operating voltages of the track gauge sensor 102, the inertial navigation sensor 103, the laser sensor 104 and the processing terminal 200 are low, and the voltage provided by the power supply cannot be directly used, in any of the above technical solutions, optionally, the control circuit board 105 is further provided with a first voltage-dropping circuit 1052 and a second voltage-dropping circuit 1053; the first voltage-reducing circuit 1052 and the second voltage-reducing circuit 1053 are used for reducing the voltage supplied from the power supply step by step.

The input end of the first voltage-reducing circuit 1052 is used for connecting the power supply and performing first voltage-reducing processing on the voltage of the power supply; the output end of the first voltage-reducing circuit 1052 is connected to the input end of the second voltage-reducing circuit 1053, so as to perform the second voltage-reducing processing on the first voltage obtained by the first voltage-reducing processing; the output end of the second voltage-reducing circuit 1053 is connected to the power supply end of the control unit 1051, so that the second voltage after the second voltage-reducing process is adopted to supply power to the control unit 1051.

First step-down circuit 1052 obtains first voltage after carrying out first step-down processing to the voltage that power supply provided, then carries first voltage for second step-down circuit 1053, and second step-down circuit 1053 obtains satisfying the second voltage of waiting the required supply voltage of power supply unit after carrying out second step-down processing to first voltage, then adopts the second voltage to wait power supply unit power supply to each.

In any of the above technical solutions, optionally, the output end of the second voltage-reducing circuit 1053 is further connected to the power supply ends of the track gauge sensor 102, the inertial navigation sensor 103, the laser sensor 104, and the communication serial port 1058, respectively, so as to supply power to the track gauge sensor 102, the inertial navigation sensor 103, the laser sensor 104, and the communication serial port 1058 with a second voltage.

In this embodiment, optionally, the power supply provides 7v to 55v of voltage for the control circuit board 105, the first voltage-reducing circuit 1052 reduces the voltage to obtain 5v of voltage, the 5v of voltage is transmitted to the second voltage-reducing circuit 1053, the second voltage-reducing circuit 1053 reduces the voltage of 5v again to obtain 3.3v of voltage, and the voltage is used for supplying power to the control unit 1051, the track distance sensor 102, the inertial navigation sensor 103, the laser sensor 104, and the communication serial port 1058.

In addition, since the power supply voltage required by the mileage sensor 101 may be higher than the power supply voltages of other sensors, in any of the above technical solutions, optionally, the control circuit board 105 is further provided with: and the boosting circuit 1054 is used for boosting the second voltage output by the second voltage reducing circuit 1053 to a power supply voltage required by a device to be powered.

The input end of the boosting circuit 1054 is connected with the output end of the second voltage reducing circuit 1053 so as to boost the second voltage; the output end of the boosting circuit 1054 is connected with the power supply end of the mileage sensor 101, so that the boosted third voltage is used for supplying power to the mileage sensor 101.

In this embodiment, optionally, the voltage boosting circuit 1054 boosts the voltage of 3.3v after the voltage reduction processing twice to 12v again and supplies power to the mileage sensor 101.

Optionally, on the basis of fig. 3, an alternative implementation of the rail inspection data acquisition device 100 is further provided in an embodiment of the present invention. Fig. 4 is a fourth schematic structural diagram of the rail inspection data acquisition device 100 according to the embodiment of the present invention; as shown in fig. 4, the control circuit board 105 is further provided with: the isolation circuit comprises three groups of first isolation units 1055 and second isolation units 1056, wherein each group of first isolation units 1055 comprises an acquisition isolation circuit and a power supply isolation circuit; the second isolation unit 1056 includes: data isolation circuitry and power supply isolation circuitry.

The acquisition interface of the control unit 1051 is in communication connection with the data interfaces of the track gauge sensor 102, the inertial navigation sensor 103 and the laser sensor 104 through the acquisition isolation circuits in the three groups of first isolation units 1055; by the aid of the acquisition isolation circuit, various noise signals of a measurement field are isolated, and accuracy of acquired track gauge data, pose data and contour data is guaranteed.

The output end of the second voltage reduction circuit 1053 is respectively connected with the power supply ends of the track gauge sensor 102, the inertial navigation sensor 103 and the laser sensor 104 through the power supply isolation circuits in the three groups of first isolation units 1055; the power supply isolation circuit ensures the safety of the control circuit board 105, and the track gauge sensor 102, the inertial navigation sensor 103 and the laser sensor 104 are prevented from being impacted by transient high voltage by cutting off a ground circuit, so that the reliable operation of the track inspection data acquisition device 100 is ensured.

The output interface of the control unit 1051 is connected to the data end of the communication serial port 1058 through the data isolation circuit of the second isolation unit 1056, and the output end of the second voltage reduction circuit 1053 is connected to the power supply end of the communication serial port 1058 through the power supply isolation circuit of the second isolation unit 1056. The data isolation circuit realizes the isolation among the gauge data, the pose data and the profile data, prevents the mutual interference among the gauge data, the pose data and the profile data, and ensures the accuracy of the gauge data, the pose data and the profile data acquired by the processing terminal 200.

In any of the above technical solutions, optionally, the control circuit board 105 is further provided with: a third isolation unit 1057; the third isolation unit 1057 includes: the acquisition isolation circuit and the power supply isolation circuit; the acquisition interface of the control unit 1051 is in communication connection with the data interface of the mileage sensor 101 through an acquisition isolation circuit in the third isolation unit 1057; by the aid of the acquisition isolation circuit, various noise signals of a measurement field are isolated, and accuracy of acquired mileage data is guaranteed.

The output end of the voltage boost circuit 1054 is connected with the power supply end of the mileage sensor 101 through the power supply isolation circuit in the third isolation unit 1057. The power supply isolation circuit ensures the safety of the control circuit board 105, and the mileage sensor 101 is prevented from transient high voltage impact by cutting off a ground circuit, thereby ensuring the reliable operation of the rail inspection data acquisition device 100.

Fig. 5 is a flowchart of a rail inspection data acquisition method according to an embodiment of the present invention; as shown in fig. 5, the present embodiment further provides a method for acquiring rail inspection data, where the method is applied to the control unit 1051 in any one of the above-mentioned rail inspection data acquisition devices 100, and the method includes:

s100: acquiring mileage data acquired by a mileage sensor 101, track gauge data acquired by a track gauge sensor 102, pose data acquired by an inertial navigation sensor 103 and time information;

s200: and the mileage data, the track gauge data, the pose data and the time information are transmitted to the processing terminal 200 through the communication serial port.

By adopting the method, the acquired mileage data, the track gauge data, the pose data and the time information can be sent to the processing terminal 200 in real time after corresponding to each other, the technical problem that the real-time acquisition time of the multi-data is inaccurate is solved, and meanwhile, the work of collecting, processing, repairing and positioning data after work is reduced.

In this embodiment, optionally, the communication serial port may be a 232 communication serial port, and the mileage data, the track gauge data, the pose data, and the time information are immediately transmitted to the processing terminal 200 through the 232 communication serial port.

In this embodiment, optionally, the processing terminal 200 analyzes the mileage data, the track gauge data, and the pose data corresponding to the time after receiving the mileage data, the track gauge data, and the pose data, and displays the relevant condition of the to-be-detected track in real time.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.