CN220298496U - Ultrahigh-speed positioning and speed measuring system based on laser sensor - Google Patents
Ultrahigh-speed positioning and speed measuring system based on laser sensor Download PDFInfo
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- CN220298496U CN220298496U CN202321925555.8U CN202321925555U CN220298496U CN 220298496 U CN220298496 U CN 220298496U CN 202321925555 U CN202321925555 U CN 202321925555U CN 220298496 U CN220298496 U CN 220298496U
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Abstract
The utility model discloses a laser sensor-based ultra-high speed positioning and speed measuring system, which comprises a laser sensor main body and a passive code board. According to the utility model, the laser sensor main bodies are arranged in sequence, namely, the laser sensor main bodies are connected in sequence through the optical fiber main bodies, and are combined to form an optical fiber cascade structure, so that efficient test matching is realized, the intervals between the adjacent laser sensor main bodies are consistent with the length of the non-source code cards, so that a single laser sensor main body can perform efficient test matching, double test data are avoided, secondly, the laser sensor main body triggers data flow transmission through the jump edge of a detection signal, the data flow can be quickly transmitted to a data synthesis unit through the optical fiber cascade mode, and efficient analysis and correction activities are realized, therefore, a control system can quickly acquire tested positions and speed values, and the advantages of reducing transmission delay of ultra-high speed positioning and speed measurement activities, reducing influence of the number of line communication stations and high anti-interference performance are achieved.
Description
Technical Field
The utility model relates to the field of ultra-high speed positioning and speed measuring, in particular to an ultra-high speed positioning and speed measuring system based on a laser sensor.
Background
For an object running at an ultra-high speed, the speed and the position are two very important information, and only the information such as the speed, the position and the like is acquired in time, the control of running, stopping, accelerating, decelerating and the like can be accurately carried out, so that the running efficiency and the safety are ensured, and therefore, the timely and accurate acquisition of the speed and the position is an essential link for safe running;
an ultra-high-speed magnetic levitation train positioning and speed measuring system based on m-sequence coding with the existing application number of CN202010111573.7 comprises a train body, a laser light source, a beam splitter, a transmitting light source plate, a receiving lens module, a networking processing system and a traction operation control system; the laser light source, the beam splitter and the emission light source plate are arranged at the top of the head body of the ultra-high speed magnetic levitation train, and the receiving lens modules are arranged on the inner pipe wall of the pipeline at equal intervals; an optical transmitting lens is arranged on the transmitting light source plate, and an optical receiving lens is arranged on the receiving lens module; the continuous optical signal output by the laser light source forms a straight line-shaped light at the end of the transmitting light source plate through the beam splitter, the receiving lens module receives the coded laser signal along with the movement of the ultra-high-speed maglev train body, the coded laser signal is transmitted to the networking processing system far away from the pipeline, the networking processing system converts the received coded laser signal into an electric signal, the information is output and transmitted to the traction control system, and the coded laser signal is 8-bit m-sequence code;
according to the speed measuring system, the FPGA decoding circuit is arranged to analyze the m-sequence codes, the specific position and speed of the train are obtained in an auxiliary mode, the speed measuring system has a certain high-efficiency speed measuring effect, but is complex in structure, low in anti-interference capability and low in transmission speed, the phenomenon that the test reaction is not timely easily occurs in the ultra-high speed measuring process, and the detected numerical value is wrong;
therefore, a cascading scheme of a laser sensor-based ultra-high speed positioning and speed measuring system is proposed nowadays, a plurality of laser sensors are utilized to realize high-efficiency anti-interference speed measuring and detecting activities, the laser sensors refer to sensors which measure by utilizing a laser technology, the laser sensors consist of lasers and a laser detecting circuit, and the laser sensors are novel detecting instruments.
Disclosure of Invention
Therefore, in order to solve the defects, the utility model provides an ultrahigh-speed positioning and speed measuring system based on a laser sensor.
In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides a superhigh speed location speed measurement system based on laser sensor, includes laser sensor main part and passive sign indicating number, the laser sensor main part is provided with optical fiber input port and optic fibre delivery outlet, optical fiber input port and optic fibre delivery outlet connect the optical fiber main part, last level the optical fiber main part inserts the data synthesis unit, the data synthesis unit meets with control system, the sign indicating number that does not have the source sign indicating number is a sign indicating number that has subdivision scale, fixes on the moving object, and its length is unanimous with the installation interval of laser sensor main part.
Preferably, the laser sensor bodies are laid and mounted along the track, and the laser sensor bodies are provided with unique numbers (IDs), and adjacent laser sensor bodies are communicated with each other by adopting an optical fiber body.
Preferably, the installation interval of the laser sensor main bodies is consistent with the length of the non-source code cards, and only one laser sensor main body detects signals at the same time.
Preferably, the data format of the optical fiber main body adopts a fixed-length data short frame mode.
Preferably, when the laser sensor body does not detect a signal, that is, when the no source code board does not pass through the laser sensor body, the laser sensor body only plays a role in transmitting a data stream, that is, transmitting the data stream transmitted from the previous laser sensor body to the next laser sensor body.
The utility model has the beneficial effects that:
according to the utility model, the laser sensor main bodies are arranged, namely, the laser sensor main bodies are sequentially connected through the optical fiber main bodies, are combined to form an optical fiber cascade structure, so that efficient test matching is realized, the intervals between the adjacent laser sensor main bodies are consistent with the length of the non-source code cards, so that a single laser sensor main body can perform efficient test matching, double test data is avoided, and secondly, the laser sensor main bodies trigger data stream transmission through the jump edges of detection signals, and the data stream can be quickly transmitted to a data comprehensive unit through the optical fiber cascade mode, so that efficient analysis and correction activities are realized. Therefore, the control system can rapidly acquire the tested position and speed values, thereby achieving the advantages of reducing transmission delay of the ultra-high speed positioning and speed measuring activity, reducing the influence of the number of stations on line communication and having high anti-interference performance.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic view of a laser sensor body mounting spacing structure of the present utility model;
FIG. 3 is a diagram of the detection signal and data according to the present utility model.
Wherein: the laser sensor comprises a laser sensor main body-1, an optical fiber input port-2, an optical fiber output port-3, an optical fiber main body-4, a data synthesis unit-5, a control system-6, a passive code board-7, a data stream-a and a sensor detection signal-b.
Detailed Description
In order to further explain the technical scheme of the utility model, the following is explained in detail through specific examples.
Referring to fig. 1-2, the utility model provides a laser sensor-based ultra-high speed positioning and speed measuring system, which comprises a laser sensor main body 1 and a passive code tag 7 for interference resistance and speed measurement, wherein the laser sensor main body 1 is sequentially provided with unique numbers (IDs) respectively, the distances between adjacent laser sensor main bodies 1 are equal, the laser sensor main body 1 is provided with an optical fiber input port 2 and an optical fiber output port 3, the optical fiber input port 2 and the lower end of the optical fiber output port 3 are externally connected with an optical fiber main body 4, the optical fiber main body 4 connected with the optical fiber input port 2 and the optical fiber output port 3 are respectively connected with the laser sensor main body 1 at the upper stage and the laser sensor main body 1 at the lower stage, so that all the laser sensor main bodies 1 are connected with the optical fiber input port 2 of a data synthesis unit 5 only through one optical fiber main body 4, the data synthesis unit 5 can receive and analyze data stream a sent by the laser sensor main body 1 at the last stage, the data synthesis unit 5 is connected with a control system 6, the passive code tag 7 is fastened on an external moving body, and the passive code tag 7 is a code tag with subdivision scale, and the length is consistent with the installation distance of the laser sensor main body 1.
The encoding, transmitting and decoding of the data sent by the system are completed by the FPGA decoding equipment, so that the real-time performance of the system response is ensured, and a redundancy cascade mode can be adopted, namely, two paths of optical fibers simultaneously transmit signals, and when one path of optical fibers breaks down, the redundancy optical fibers can be used as redundancy, so that the fault time of the system is reduced, and the integrity and the stability of data transmission are ensured.
The laser sensor main bodies 1 are paved and installed along the track, and the adjacent laser sensor main bodies 1 are communicated by adopting the optical fiber main bodies 4, so that the stable composition of the ultra-high speed positioning and speed measuring system is ensured; the installation interval of the laser sensor main body 1 is consistent with the length of the non-source code card 7, and the signal sent by the laser sensor main body 1 is a data stream a, so that only one laser sensor main body 1 can perform signal detection activity at a time, and the occurrence of double detection signals is avoided; the data format of the optical fiber main body 4 adopts a fixed-length data short frame mode, so that the data decoding efficiency can be improved, the measured signals can be rapidly decoded and displayed; when the laser sensor main body 1 does not detect signals, namely when the no source code card does not pass through the laser sensor main body 1, the laser sensor main body only plays a role in transmitting the data stream a, namely, the data stream a transmitted by the laser sensor main body 1 at the previous stage is transmitted to the laser sensor main body 1 at the next stage, so that the signal transmission delay is reduced, the data decoding efficiency is improved, and the networking complexity is reduced.
The working principle is as follows:
when the ultra-high speed positioning and speed measuring activity is to be carried out, the passive code cards 7 can be arranged on a moving body in advance, then a plurality of laser sensor main bodies 1 provided with unique numbers (IDs) are sequentially paved on the outer side of a track at equal intervals to be opposite to the passive code cards 7, and the installation intervals between the adjacent laser sensor main bodies 1 are consistent with the length of the passive code cards 7, so that when the speed measuring and detecting activity is carried out, only one laser sensor main body 1 is ensured to detect a sensor detection signal b at one time, the occurrence of a double-signal detection phenomenon is avoided, and the speed measuring, positioning and detecting activity is influenced;
then, the optical fiber main bodies 4 are connected with the optical fiber input ports 2 and the optical fiber output ports 3 at the bottoms of the laser sensor main bodies 1 in sequence, so that all the laser sensor main bodies 1 are connected with the data integration unit 5 only through one optical fiber main body 4, and after the data integration unit 5 is connected with the input end of the control system 6, the ultra-high speed positioning and speed measuring system can be quickly assembled and used without other complicated networks;
when the passive code cards 7 fixed on the moving body sequentially slide over the laser sensor main bodies 1 arranged along the line, the first-stage laser sensor main bodies 1 can detect the signal b, at the moment, the first-stage laser sensor main bodies 1 can trigger the data transmission of the laser sensor main bodies 1 by the jump edge of the signal b, the data stream a is matched with the bottom-connected optical fiber main bodies 4 and is transmitted into the next laser sensor main bodies 1, and then the data stream a is quickly transmitted to the data synthesis unit 5 for position analysis, so that the system delay is only the photoelectric-electrooptical signal conversion time, the complexity of networking is reduced, the delay is known and determined, the subsequent compensation processing is convenient, and the analyzed data can be transmitted into the control system 6;
when the data synthesis unit 5 analyzes and verifies the data stream a from the laser sensor main body 1, because the absolute position of each laser sensor main body 1 is fixed and the interval distance is equal, when the laser sensor main body 1 is marked by the no-source code card 7, the serial number information sent to the data synthesis unit 5 by the laser sensor main body 1 can obtain an absolute large address to obtain accurate positioning activity of the position, each time the no-source code card 7 moves by a distance with minimum resolution, the data synthesis unit 5 receives a frame of data, the accumulated frame number of the data synthesis unit 5 is a relative address, and when the serial number of the laser sensor main body 1 changes, the frame count is cleared, so that the data synthesis unit 5 can synthesize a whole-course absolute address according to the large address formed by the serial number of the laser sensor main body 1 and the relative address obtained by moving the no-source code card 7, calculate the moving speed according to the address, and then transmit the information to the control system 6 to realize accurate acquisition of the ultra-high speed positioning speed measurement data, thereby achieving the advantages of small transmission delay lock of the ultra-high speed positioning activity and reducing the influence of the number of stations on line communication and high anti-interference.
The utility model provides a laser sensor-based ultra-high-speed positioning and speed measuring system, which is characterized in that a laser sensor main body 1 is arranged, namely, the laser sensor main body 1 is sequentially connected through an optical fiber main body 4, and the laser sensor main bodies are combined to form an optical fiber cascade structure, so that high-efficiency test matching is realized, the intervals between adjacent laser sensor main bodies 1 are consistent with the length of a non-source code board 7, the single laser sensor main body 1 can perform high-efficiency test matching, double test data are avoided, the laser sensor main body sends a data stream a through a detection signal b jump edge, the data stream a can be quickly transmitted to a data comprehensive unit 5 in an optical fiber cascade mode, high-efficiency analysis and correction activity is realized, and therefore, a control system 6 can quickly acquire tested positions and speed values, and the advantages of reducing the transmission delay of the ultra-high-speed positioning and speed measuring activity, reducing the influence of the number of stations on line communication and high interference resistance are achieved.
The foregoing is merely a preferred example of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (6)
1. A superhigh speed positioning and speed measuring system based on a laser sensor is characterized in that: including laser sensor main part (1) and no source sign (7), laser sensor main part (1) are provided with optical fiber input port (2) and optical fiber delivery outlet (3) respectively, optical fiber input port (2) and optical fiber delivery outlet (3) connect optical fiber main part (4), last one stage optical fiber main part (4) have connect data synthesis unit (5), data synthesis unit (5) meet with control system (6), no source sign (7) are one kind and have the sign indicating number of subdivision scale, fix on the moving object, its length is unanimous with the installation interval of laser sensor main part (1).
2. The ultra-high speed positioning and speed measuring system based on the laser sensor according to claim 1, wherein: the laser sensor main body (1) is paved and installed along the track, the laser sensor main body (1) is provided with a unique number (ID), and the adjacent laser sensor main bodies (1) are communicated by adopting an optical fiber main body (4).
3. The ultra-high speed positioning and speed measuring system based on the laser sensor according to claim 1, wherein: the installation interval of the laser sensor main bodies (1) is consistent with the length of the non-source code cards (7), only one laser sensor main body (1) detects a signal b at the same time, and meanwhile, the jump edge of the signal b triggers the data stream a of the laser sensor main body (1) to send.
4. The ultra-high speed positioning and speed measuring system based on the laser sensor according to claim 1, wherein: the data a format transmitted by the optical fiber main body (4) adopts a fixed-length data short frame mode.
5. The ultra-high speed positioning and speed measuring system based on the laser sensor according to claim 1, wherein: when the laser sensor main body (1) does not detect signals, namely when the no-source code card (7) does not pass through the laser sensor main body (1), the laser sensor main body only plays a role in transmitting the data stream a, namely, the data stream a transmitted by the laser sensor main body (1) at the previous stage is transmitted to the laser sensor main body (1) at the next stage.
6. The ultra-high speed positioning and speed measuring system based on the laser sensor according to claim 1, wherein: the laser sensor bodies (1) can each be provided with a unique number.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202321925555.8U CN220298496U (en) | 2023-07-20 | 2023-07-20 | Ultrahigh-speed positioning and speed measuring system based on laser sensor |
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| CN202321925555.8U CN220298496U (en) | 2023-07-20 | 2023-07-20 | Ultrahigh-speed positioning and speed measuring system based on laser sensor |
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| CN220298496U true CN220298496U (en) | 2024-01-05 |
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| CN202321925555.8U Active CN220298496U (en) | 2023-07-20 | 2023-07-20 | Ultrahigh-speed positioning and speed measuring system based on laser sensor |
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