Portable railway train identification device

Abstract

The utility model provides a portable railway train identification device, which relates to the field of railway construction and maintenance, can be placed on a railway track, and comprises a signal acquisition device used for acquiring a frequency shift signal from the railway track, the frequency shift signal being an alternating current signal; the signal processing device is used for performing signal processing on the frequency shift signal; and the circuit board is used for determining whether the actual row of the track is uplink or downlink based on the processed frequency shift signal. The identification device can identify the row of the railway.

Description

TECHNICAL FIELD

[0001] The utility model relates to railway construction maintenance field especially relates to a portable railway line's discrimination device. BACKGROUND

[0002] Railway construction maintenance needs in railway skylight point, railway has different line, line includes uplink and downlink, only with the appearance of railway is difficult to accurately identify railway line, if in the construction line identification of railway is wrong, will not be in the skylight plan line mistake for located in the skylight plan line, will cause serious influence to the safety of construction personnel and train operation safety, need a kind of device that can identify railway line. SUMMARY

[0003] The utility model provides a kind of portable railway line's discrimination device, to solve how to realize the technical problem of the line of railway identification.

[0004] The utility model embodiment provides a kind of portable railway line's discrimination device, the discrimination device can be placed on track, the discrimination device includes: signal acquisition device, for obtaining frequency shift signal by railway track, the frequency shift signal is alternating current signal;Signal processing device, for signal processing to the frequency shift signal;Circuit board, for determining whether the actual line of the track is uplink or downlink based on the frequency shift signal after processing.

[0005] In some embodiments, the discrimination device includes a housing, the housing has accommodating cavity, the accommodating cavity is used to accommodate the signal acquisition device, the signal processing device and the circuit board;Wherein, the bottom surface of the housing is used to contact with the top surface of the track, and the bottom of the housing has limiting protrusion, the limiting protrusion is located on both sides of the bottom of the housing, for contacting with the side surface of the track.

[0006] In some embodiments, the signal processing device is located between the signal acquisition device and the circuit board in vertical direction, and the signal acquisition device is located close to one side of the bottom surface of the housing.

[0007] In some embodiments, the signal acquisition device includes magnetic core and sensor, the magnetic core is used for magnetic convergence;The sensor is used to perceive alternating magnetic field after magnetic core convergence and converts into alternating voltage signal output.

[0008] In some embodiments, the signal processing device comprises a single-chip microcomputer, which is configured to acquire the measured voltage and pre-process the detected voltage to obtain a processed voltage, the pre-processing comprising filtering, rectifying and amplifying; the single-chip microcomputer is further configured to demodulate the processed voltage to obtain a low-frequency signal in the processed voltage; and the circuit board is configured to acquire the low-frequency signal and determine whether the actual track direction of the track is an up direction or a down direction based on the low-frequency signal.

[0009] In some embodiments, the identification device further comprises an adjustment button configured to adjust a target direction; the identification device further comprises an alarm device; the identification device is further configured to compare the actual direction with the target direction, and control the alarm device to output an alarm signal in a state where the actual direction is inconsistent with the target direction.

[0010] In some embodiments, the identification device comprises a state display lamp configured to display the target direction; the alarm device comprises an alarm lamp, which is turned on in the state where the actual direction is inconsistent with the target direction.

[0011] In some embodiments, the alarm device comprises a loudspeaker, which outputs an alarm audio in the state where the actual direction is inconsistent with the target direction.

[0012] In some embodiments, the identification device further comprises a power supply connected to the signal processing device and the circuit board, configured to supply power to the signal processing device and the circuit board; and a charging interface configured to charge external power into the power supply.

[0013] In some embodiments, the identification device further comprises a power switch connected to the power supply, configured to control the power supply to be turned on or off; and an identification switch connected to the circuit board, configured to control the circuit board to be powered on or powered off.

[0014] Embodiments of the present application provide an identification device for portable railway direction, which comprises a signal acquisition device configured to acquire a frequency shift signal from a railway track, a signal processing device configured to process the frequency shift signal, and a circuit board configured to determine an actual direction of the track based on the processed frequency shift signal, the actual direction being an up direction or a down direction, the identification device being capable of acquiring the frequency shift signal and determining the actual direction of the track based on the frequency shift signal, so that a construction worker can learn whether the actual direction is consistent with a skylight plan in time. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 FIG. 1 is a structural schematic diagram of an identification device for portable railway direction according to an embodiment of the present application;

[0016] Figure 2 The second structure schematic diagram of the portable railway type identification device is provided for the embodiment of the utility model;

[0017] Figure 3 The assembly schematic diagram of the magnetic core and the single-chip microcomputer in the portable railway type identification device is provided for the embodiment of the utility model;

[0018] Figure 4 The assembly schematic diagram of the adjusting button, the state display lamp, the alarm device and the circuit board in the portable railway type identification device is provided for the embodiment of the utility model;

[0019] Figure 5 The assembly schematic diagram of the power supply, the charging interface, the circuit board and the signal processing device in the portable railway type identification device is provided for the embodiment of the utility model;

[0020] Figure 6 The assembly schematic diagram of the power switch, the identification switch and the shell in the portable railway type identification device is provided for the embodiment of the utility model.

[0021] Explanation of reference signs

[0022] 1, portable railway type identification device; 10, signal acquisition device; 11, magnetic; 20, signal processing device; 21, single-chip microcomputer; 30, circuit board; 40, shell; 41, containing cavity; 51, adjusting button; 52, alarm device; 521, alarm lamp; 522, loudspeaker; 53, state display lamp; 61, power supply; 62, charging interface; 71, power switch; 72, identification switch. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the utility model more clear, the utility model is described in detail below by combining with the drawings and specific embodiments.

[0024] In the specific embodiments, various specific technical features in each of the various embodiments described can be combined in various combinations, for example, different specific technical features can form different embodiments through combination, in order to avoid unnecessary repetition, various possible combination modes of each specific technical feature in the utility model are not described again.

[0025] Here, it also needs to be explained that, in order to avoid the utility model being obscured by unnecessary details, only the structures and / or processing steps closely related to the scheme of the utility model are shown in the drawings, and other details not closely related to the utility model are omitted.

[0026] In addition, it needs to be explained that the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. In the following description, the terms "first", "second", "..." are only to distinguish different objects, and do not mean that the objects have the same or relationship. It should be understood that the orientation described by the orientation terms "above", "below", "inner", "outer" and the like is the orientation in the normal use state.

[0027] In the following specific embodiments, the portable railway line identification device can be applied to any track transportation that transmits frequency shift signals through tracks, such as high-speed rail track transportation, for example, subway. The structure and function of the portable railway line identification device will be exemplarily described below in combination with various embodiments.

[0028] In some embodiments, as shown in Figure 1 The portable railway line identification device 1 includes a signal acquisition device 10, a signal processing device 20 and a circuit board 30. When it is necessary to identify the railway line, the portable railway line identification device 1 is placed on the track, at which time the signal acquisition device 10 can acquire the frequency shift signal transmitted in the track. It needs to be explained that the frequency shift signal is an alternating current signal transmitted through the track in the track circuit, which is used to supervise the occupation of the section track by the train to provide the basis for the section track closure control, and is also used to transmit the train operation information, which includes the train running position, speed and direction. By identifying the running direction in the frequency shift signal, it can be determined that the track line is up or down. Optionally, the signal acquisition device 10 can acquire the frequency shift signal through the contact structure, that is, the signal acquisition device 10 contacts the track through the conductor to directly acquire the frequency shift signal. Optionally, the signal acquisition device 10 can acquire the frequency shift signal through the non-contact structure, that is, since the frequency shift signal is alternating current, a magnetic field will be generated near the track, and the signal acquisition device can indirectly acquire the change of the alternating current through electromagnetic induction effect.

[0029] The signal processing device 20 is used to process the frequency shift signal. After the frequency shift signal is acquired, the frequency shift signal can contain environmental noise, and the voltage of the frequency shift signal can not match the voltage identification range of the circuit board 30, so that the frequency shift signal needs to be filtered and denoised and voltage converted by the signal processing device 20, so that the processed frequency shift signal can meet the identification requirements of the circuit board 30 and improve the accuracy of line identification.

[0030] The circuit board 30 is used to determine the actual track direction of the track based on the processed frequency shift signal, and the circuit board 30 extracts the track direction in the frequency shift signal and determines the actual track direction of the track based on the track direction, and the actual track direction can be displayed by a signal lamp after the actual track direction is determined, and the actual track direction can be determined by the signal lamp whether the actual track direction is consistent with the skylight plan, and the target track direction is preset in the circuit board 30, and the circuit board 30 can compare the target track direction with the actual track direction, and an alarm signal is output if the target track direction is inconsistent with the actual track direction, and the target track direction of the circuit board 30 can be adjusted, and the target track direction can be adjusted according to the skylight plan so that the target track direction is consistent with the skylight plan.

[0031] The signal acquisition device 10, the signal processing device 20 and the circuit board 30 are small-sized electronic elements or electronic components, and the size is small and the weight is light, so that the identification device can be carried on the body, and the identification device can be placed on the track during use, and the identification device can be taken off after identification is completed.

[0032] The utility model discloses a kind of portable railway track direction identification devices, which comprises: signal acquisition device for obtaining frequency shift signal from railway track, signal processing device for signal processing to frequency shift signal, and circuit board for determining the actual track direction of track based on the processed frequency shift signal, and the actual track direction is uplink or downlink, and the identification device can obtain frequency shift signal and determine the actual track direction of track based on frequency shift signal, so that construction personnel can know whether the actual track direction is consistent with skylight plan in time.

[0033] In some embodiments, as shown in Figure 2 The portable railway track direction identification device 1 further includes a housing 40, and the housing 40 has a containing cavity 41 inside, and the containing cavity 41 is used to contain the signal acquisition device 10, the signal processing device 20 and the circuit board 30, so that the above-mentioned electronic elements or electronic components are protected by the housing 40, thereby reducing the possibility of damage to the above-mentioned electronic elements or electronic components caused by dust or liquid droplets on the construction site, and the housing 40 has a sealing and waterproof level, for example, the protection level of the housing 40 reaches IP67, that is, the dustproof level reaches dust entrapment, and dust cannot enter the entire diameter of the object cannot exceed the gap of the shell; the waterproof level reaches the level of short-term immersion, and when the shell is temporarily immersed in water 1 meter deep at normal temperature and pressure, no harmful effects will be caused. Optionally, the signal acquisition device 10 has a conductive structure that extends from the bottom of the housing 40 to contact the track, so as to obtain the frequency shift signal by direct contact; and the signal acquisition device 10 is an inductive coil, and the signal acquisition device 10 is located in the containing cavity 41 as a whole.

[0034] In some embodiments, as shown in Figure 2As shown, the bottom surface of the shell 40 is used to contact the top surface of the track 2, and the bottom of the shell 40 has a limiting protrusion 42 on both sides of the bottom of the shell 40, which is used to contact the two side surfaces of the track, and it can be understood that, while being reliably carried on the top surface of the track 2 through the bottom surface of the shell 40, the lateral swing of the portable railway line identification device 1 relative to the track 2 is limited by the contact of the limiting protrusion 42 with the side surface of the track, so that the identification device can be placed more reliably above the track 2, and the side surface of the track 2 is the outer surface perpendicular to the length direction of the track 2.

[0035] In some embodiments, as shown in the figure, Figure 2 As shown, in the vertical direction, the signal processing device 20 is located between the signal acquisition device 10 and the circuit board 30, and the signal acquisition device 10 is located on the side close to the bottom surface of the shell 40, that is, the signal acquisition device 10 is located on the side close to the track 2, so that the signal acquisition device 10 can more conveniently acquire the frequency shift signal in the track 2, and at the same time, the circuit board 30 is located on the side away from the track 2, and the signal acquisition device 10 is isolated from the circuit board 30 by the signal processing device 20, and the track 2 and the circuit board 30 are electromagnetically isolated by the distance and the signal processing device 20, so as to reduce the influence of the magnetic field generated by the frequency shift signal around the track 2 on the circuit board 30, and by arranging the circuit board 30 on the top of the identification device, when it is necessary to make the identification device display the line state through the display lamp, the display lamp can be located on the top surface of the shell 40, so as to facilitate the construction personnel to more conveniently observe and identify the actual line.

[0036] In some embodiments, as shown in the figure, Figure 3 As shown, the signal acquisition device 10 includes a magnetic core 11 and a coil, and the magnetic core 11 is used to obtain an alternating magnetic field generated based on the frequency shift signal, and it can be understood that the frequency shift signal is an alternating current, so that an alternating magnetic field is generated around the track, and since the magnetic core 11 has greater magnetic permeability than air, the magnetic field can be enhanced to achieve magnetic concentration of the alternating magnetic field, and at the same time, a sensor is located in the middle of the magnetic core 11, which can sense the alternating magnetic field after the magnetic core converges and generate an induced voltage, which is a detection voltage, and by processing and identifying the detection voltage, the actual line of the track can be obtained, and it can be understood that the signal acquisition device 10 indirectly obtains the frequency shift signal through the principle of electromagnetic induction in a non-contact manner, and such a signal acquisition device 10 can not need to be provided with a conductor contact in contact with the track, and can more conveniently acquire the frequency shift signal, and for the identification device with the shell 40, there is no need to provide a conductor structure extending out of the shell 40, so as to further improve the sealing performance of the shell 40.

[0037] In some embodiments, as shown in the figure, Figure 3As shown, the signal processing device 20 includes a microcontroller 21. The microcontroller 21 is used to acquire the detection current and preprocess the detection voltage to obtain the processed voltage. The preprocessing includes filtering, rectification, and amplification. This can be understood as follows: during the propagation of the frequency-shifted signal and in the process of indirectly obtaining the detection voltage through the frequency-shifted signal, some high-frequency environmental noise will be generated in the detection voltage. Filtering and rectification can reduce the noise of the detection voltage, thereby reducing the impact of environmental noise on row identification. Simultaneously, the frequency-shifted signal will attenuate during the acquisition process, resulting in a lower signal strength of the acquired detection voltage. Amplifying the detection voltage makes it easier to distinguish signals of different frequencies in the detection current, thus facilitating subsequent signal processing. Recognizing the row based on the amplified signal is also more convenient. The microcontroller 21 is also used to demodulate the processed voltage to obtain the low-frequency signal in the processed voltage. It should be noted that in order to reduce the attenuation of the low-frequency signal in the frequency-shifted signal during propagation, the signal transmitting end needs to modulate the frequency-shifted signal with a high-frequency carrier signal before outputting the frequency-shifted signal. By demodulating the signal, the high-frequency carrier signal and the low-frequency signal that records the effective information in the frequency-shifted signal can be separated. For example, by performing a Fourier transform on the processed voltage, the frequency distribution of the voltage in the frequency domain can be obtained. The low-frequency signal is extracted in the frequency domain and an inverse Fourier transform is performed on the low-frequency signal, so that the low-frequency signal in the time domain that records the effective information can be restored. Moreover, the circuit board 30 is used to acquire the frequency-shifted signal, and then read the train's direction of travel based on the frequency-shifted signal, thereby determining whether the actual track is going up or down.

[0038] In some embodiments, such as Figure 4 As shown, the portable railway line identification device 1 also includes an adjustment button 51, which is used to adjust the target line. For example, the adjustment button 51 can switch between two states. By pressing the adjustment button 51, the target line is switched between the two states, i.e., the target line is switched between up and down. Simultaneously, the identification device also includes an alarm device 52. The circuit board 30 is also used to compare the actual line with the target line, and to control the alarm device 52 to output an alarm signal when the actual line and the target line are inconsistent. For example, when the actual line is identified as up but the target line is down, the circuit board 30 controls the alarm device 52 to output an alarm signal. The alarm device 52 can be any structure capable of outputting an alarm signal. For example, the alarm device 52 can be an alarm light, and the corresponding alarm signal is the illumination or flashing of the alarm light. For example, the alarm device 52 includes a horn, and the corresponding alarm signal is an alarm audio signal. Optionally, the adjustment button 51 is located on the top of the housing 40 for easy operation by construction personnel.

[0039] In some embodiments, as shown in Figure 4 The portable railway direction identification device 1 further comprises a state display lamp 53 for displaying the target direction, for example, on the top of the shell 40, there are the word marks of "up direction" and "down direction", and on the side of the word marks, there are two state display lamps 53, the target direction can be displayed by lighting the state display lamp 53 on the side of the corresponding word mark, for example, when the state display lamp 53 on the side of the word mark of "up direction" is lighted, the target direction is up direction; meanwhile, the alarm device 52 comprises an alarm lamp 521, which is lighted when the actual direction is inconsistent with the target direction; optionally, the alarm lamp 521 is located on the top surface of the shell 40.

[0040] In some embodiments, as shown in Figure 4 The alarm device 52 further comprises a loudspeaker 522, which outputs alarm audio when the actual direction is inconsistent with the target direction, so that the construction personnel can know the state that the actual direction is inconsistent with the target direction more timely.

[0041] In some embodiments, as shown in Figure 5 The portable railway direction identification device 1 further comprises a power supply 61 and a charging interface 62, the power supply 61 is connected with the signal processing device 20 and the circuit board 30, and is used for providing electric energy for the signal processing device 20 and the circuit board 30, the charging interface 62 can be connected with an external power supply device, so that the power supply 61 is charged by external electric energy.

[0042] In some embodiments, in combination with Figure 5 and Figure 6 The portable railway direction identification device 1 further comprises a power supply switch 71 and an identification switch 72, the power supply switch 71 is connected with the power supply 61, and is used for controlling the opening and closing of the power supply 61, the identification switch 72 is connected with the circuit board 30, and is used for controlling the connection or disconnection of the power supply 61 and the circuit board 30, in the state that the power supply 61 is controlled to be opened by the power supply switch 71, the power supply 61 starts to supply electric energy for the signal processing device 20 and the circuit board 30, at this time, the signal processing device 20 can start to process the frequency shift signal, and prepare for the identification of the track by the circuit board 30; in the state that the circuit board 30 is controlled to be connected with the power supply 61 by the identification switch 72, the power supply 61 can supply electric energy for the circuit board 30, so that the circuit board 30 can obtain the processed signal from the signal processing device 20, and determine the actual direction of the track according to the obtained signal, thereby saving electric energy. Optionally, in the state that the identification switch 72 is pressed for more than three seconds, the circuit board 30 is connected with the power supply 61.

[0043] The above examples are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A portable railway line identification device, characterized in that, The identification device can be placed on a track, and the identification device includes: A signal acquisition device is used to acquire frequency-shift signals from railway tracks, wherein the frequency-shift signals are alternating current signals. A signal processing device is used to perform signal processing on the frequency-shifted signal; A circuit board for determining whether the actual row of the track is up or down based on the processed frequency shift signal.

2. The identification device according to claim 1, characterized in that, The identification device includes a housing with a receiving cavity for accommodating the signal acquisition device, the signal processing device, and the circuit board. The bottom surface of the housing is used to contact the top surface of the track, and the bottom of the housing has a limiting protrusion located on both sides of the bottom of the housing for contacting the side of the track.

3. The identification device according to claim 2, characterized in that, In the vertical direction, the signal processing device is located between the signal acquisition device and the circuit board, and the signal acquisition device is located on the side close to the bottom surface of the housing.

4. The identification device according to any one of claims 1 to 3, characterized in that, The signal acquisition device includes a magnetic core and a sensor. The magnetic core is used for magnetic focusing; the sensor is used to sense the alternating magnetic field after the magnetic core focuses and convert it into an alternating voltage signal output.

5. The identification device according to claim 4, characterized in that, The signal processing device includes a microcontroller, which is used to acquire a detection voltage and preprocess the detection voltage to obtain a processed voltage. The preprocessing includes filtering, rectification, and amplification. The microcontroller is also used to demodulate the processed voltage to obtain a low-frequency signal in the processed voltage. The circuit board is used to acquire the low-frequency signal and determine whether the actual row of the track is up or down based on the low-frequency signal.

6. The identification device according to claim 1, characterized in that, The identification device further includes an adjustment button for adjusting the target row number; the identification device also includes an alarm device; the identification device is further used to compare the actual row number with the target row number, and to control the alarm device to output an alarm signal when the actual row number and the target row number are inconsistent.

7. The identification device according to claim 6, characterized in that, The identification device includes a status indicator light, which is used to display the target row number; The alarm device includes an alarm light, which illuminates when the actual row number differs from the target row number.

8. The identification device according to claim 6, characterized in that, The alarm device includes a horn, which outputs an alarm audio when the actual row number and the target row number are inconsistent.

9. The identification device according to claim 1, characterized in that, The identification device further includes: A power supply, connected to the signal processing device and the circuit board, is used to supply power to the signal processing device and the circuit board; A charging interface is used to charge the power source with external electrical energy.

10. The identification device according to claim 9, characterized in that, The identification device further includes: A power switch, connected to the power source, is used to control the power source to be turned on and off; An identification switch, connected to the circuit board, is used to control the operation or power off of the circuit board.

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