CN210971101U - Rail stress detection device for subway - Google Patents
Rail stress detection device for subway Download PDFInfo
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- CN210971101U CN210971101U CN201921865092.4U CN201921865092U CN210971101U CN 210971101 U CN210971101 U CN 210971101U CN 201921865092 U CN201921865092 U CN 201921865092U CN 210971101 U CN210971101 U CN 210971101U
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Abstract
The utility model discloses a rail stress detection device for subway, type device, storage device, contrast device, wireless communication device and unusual alarm device including microcontroller, FPGA processing circuit able to programme, ultrasonic transmitter, two ultrasonic receiver, sound collection system, sound edulcoration device, sound conversion equipment, signal transmission device, original sound. The utility model discloses during the use, at first catch the sound that normal rail sent, then handle the back through microcontroller, save through storage device, then detected the rail through knocking, the sound that the rail sent is caught through sound collection system, then through edulcoration and decoration, then utilize microcontroller and contrast device, compare the original sound that sound signal and normal rail sent, the testing result feeds back out through alarm module, data display device and wireless communication device, and accomplish the safety inspection of rail.
Description
Technical Field
The utility model belongs to the technical field of rail stress detects, concretely relates to rail stress detection device for subway.
Background
Railway tracks, for short, rails and the like are used on railway and cooperate with a switch to enable a train to walk without steering, the tracks are generally composed of two balanced steel rails which are fixedly arranged on sleepers, and ballast is arranged below the sleepers.
Therefore, it is required to provide a rail stress detecting apparatus for a subway.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a rail stress detection device for subway for solve the problem among the prior art, need the user to carry just can detect the rail like traditional rail stress detection device, generally adopt stress piece sensor, this kind of mode is lower to the detection efficiency and the precision of rail, and, also can only single coarse stress value of detection, then can't detect to other information of rail, for example the safety inspection etc. of rail.
In order to achieve the above object, the utility model adopts the following technical scheme:
a rail stress detection device for a subway comprises a microcontroller, a programmable FPGA processing circuit, an ultrasonic transmitter, two ultrasonic receivers, a sound acquisition device, a sound impurity removal device, a sound conversion device, a signal transmission device, an original sound input device, a storage device, a comparison device, a wireless communication device and an abnormity alarm device;
the microcontroller is used for generating a control signal according to the received instruction information and sending the control signal to the ultrasonic transmitter;
the ultrasonic transmitter is electrically connected with the microcontroller and is used for receiving the control signal and sending an ultrasonic signal to the subway rail according to the control signal so as to be convenient for the ultrasonic signal to be transmitted in the subway rail;
the two ultrasonic receivers are respectively arranged at positions which are separated from the ultrasonic transmitter by preset distances and used for receiving the ultrasonic signals transmitted by the subway rail and sending the ultrasonic signals to the programmable FPGA processing circuit;
the programmable FPGA processing circuit is respectively electrically connected with the two ultrasonic receivers and is used for receiving the ultrasonic signals transmitted by the subway rail, carrying out filtering and FFT analysis on the ultrasonic signals, calculating the receiving time difference of the two ultrasonic signals and determining the absolute stress value of the high-speed railway rail according to the receiving time difference;
the output end of the sound acquisition device is connected with the input end of the sound impurity removal device, the output end of the sound impurity removal device is connected with the input end of the sound conversion device, the output end of the sound conversion device is connected with the output end of the signal transmission device, the output end of the signal transmission device is connected with one input end of the microcontroller, and the sound signal acquired by the sound acquisition device is transmitted to the microcontroller after impurity removal and conversion;
the output end of the original sound recording device is connected with one input end of the microcontroller and is used for recording the original sound of a normal subway rail;
the storage device is connected with the microcontroller in a bidirectional way and is used for storing the original sound sent by the microcontroller and calling the original sound by the microcontroller;
the comparison device is connected with the microcontroller in a bidirectional mode and used for comparing the sound signal with the original sound and sending a feedback signal to the microcontroller when the sound signal is not matched with the original sound, and the microcontroller is also used for receiving the feedback signal and sending the feedback signal to the abnormality alarm device;
the input end of the abnormity warning device is connected with one output end of the microcontroller and is used for receiving the feedback signal and giving an alarm according to the feedback signal;
the wireless communication device is in bidirectional connection with the microcontroller, and the microcontroller performs data interaction with a remote subway rail detection center through the wireless communication device;
the voice impurity removing device comprises a voice filter circuit and a voice amplifying circuit, the voice converting device is an analog-digital conversion circuit, the voice collecting device, the voice filter circuit, the voice amplifying circuit and the analog-digital conversion circuit are sequentially connected, the voice filter circuit is used for filtering voice signals collected by the voice collecting device, the voice amplifying circuit is used for amplifying the voice signals subjected to filtering processing, and the analog-digital conversion signals are used for performing analog-digital conversion processing on the voice signals subjected to amplifying processing.
Preferably, the comparison means comprises: the tone color comparison module is used for comparing the tone color of the sound signal with that of the original sound;
the wavelength comparison module is used for comparing the wavelength of the sound signal with that of the original sound;
and the frequency comparison module is used for comparing the frequency of the sound signal with the frequency of the original sound.
Preferably, the abnormality warning device includes a speaker sound warning circuit and an L ED flashlight warning circuit.
Preferably, L ED in the L ED flash alarm circuit is red.
Preferably, the subway temperature sensor further comprises a temperature sensor, wherein the output end of the temperature sensor is connected with one input end of the microcontroller and is used for acquiring the temperature data of the whole subway rail stress detection device.
Preferably, the system further comprises a data display device, wherein an input end of the data display device is connected with an output end of the microcontroller and is used for displaying data sent by the microcontroller.
Preferably, the subway rail stress detection device further comprises a power supply device, and the power supply device is used for supplying power to the whole subway rail stress detection device.
Preferably, the power supply device comprises one or more of a mains power supply system, a photovoltaic power supply system, a storage battery and a rechargeable battery.
Preferably, the wireless communication device comprises one or more of 4G, 5G, WIFI and Bluetooth.
The utility model has the beneficial technical effects that: compared with the mode of detecting the rail by using the stress sheet sensor in the prior art, the method can only measure the relative stress change of the stress of the rail from 0 to the stress of the current rail, but cannot detect the actual absolute stress value of the rail (namely the rail break starting point and the current rail stress), so that the scheme that the detection result by using the stress sheet sensor is inaccurate is adopted, a programmable FPGA processing circuit is used, the time difference of the received ultrasonic signal is calculated through the comparison frequency ratio equal correlation algorithm analysis in the FPGA, and the corresponding rail absolute stress value and the corresponding stress change value are obtained by comparing a standard stress delay sample value table, so that the stress measurement result is accurate; when the device is used, firstly, sound emitted by a normal rail is captured, then the sound is processed by the microcontroller and is stored by the storage device, then the detected rail is knocked, sound emitted by the rail is captured by the sound acquisition device, then impurity removal and modification are performed, then the microcontroller and the comparison device are utilized to compare a sound signal with original sound emitted by the normal rail, a detection result is fed back by the alarm module, the data display device and the wireless communication device, and safety detection of the rail is completed.
Drawings
Fig. 1 is a schematic circuit diagram according to an embodiment of the present invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example (b):
as shown in fig. 1, a rail stress detection device for a subway comprises a microcontroller, a programmable FPGA processing circuit, an ultrasonic transmitter, two ultrasonic receivers, a sound acquisition device, a sound impurity removal device, a sound conversion device, a signal transmission device, an original sound recording device, a storage device, a comparison device, a wireless communication device and an abnormality alarm device;
the microcontroller is used for generating a control signal according to the received instruction information and sending the control signal to the ultrasonic transmitter;
the ultrasonic transmitter is electrically connected with the microcontroller and is used for receiving the control signal and sending an ultrasonic signal to the subway rail according to the control signal so as to be convenient for the ultrasonic signal to be transmitted in the subway rail;
the two ultrasonic receivers are respectively arranged at positions which are separated from the ultrasonic transmitter by preset distances and used for receiving the ultrasonic signals transmitted by the subway rail and sending the ultrasonic signals to the programmable FPGA processing circuit;
the programmable FPGA processing circuit is respectively electrically connected with the two ultrasonic receivers and is used for receiving the ultrasonic signals transmitted by the subway rail, carrying out filtering and FFT analysis on the ultrasonic signals, calculating the receiving time difference of the two ultrasonic signals and determining the absolute stress value of the high-speed railway rail according to the receiving time difference;
the output end of the sound acquisition device is connected with the input end of the sound impurity removal device, the output end of the sound impurity removal device is connected with the input end of the sound conversion device, the output end of the sound conversion device is connected with the output end of the signal transmission device, the output end of the signal transmission device is connected with one input end of the microcontroller, and the sound signal acquired by the sound acquisition device is transmitted to the microcontroller after impurity removal and conversion;
the output end of the original sound recording device is connected with one input end of the microcontroller and is used for recording the original sound of a normal subway rail;
the storage device is connected with the microcontroller in a bidirectional way and is used for storing the original sound sent by the microcontroller and calling the original sound by the microcontroller;
the comparison device is connected with the microcontroller in a bidirectional mode and used for comparing the sound signal with the original sound and sending a feedback signal to the microcontroller when the sound signal is not matched with the original sound, and the microcontroller is also used for receiving the feedback signal and sending the feedback signal to the abnormality alarm device;
the input end of the abnormity warning device is connected with one output end of the microcontroller and is used for receiving the feedback signal and giving an alarm according to the feedback signal;
the wireless communication device is in bidirectional connection with the microcontroller, and the microcontroller performs data interaction with a remote subway rail detection center through the wireless communication device;
the voice impurity removing device comprises a voice filter circuit and a voice amplifying circuit, the voice converting device is an analog-digital conversion circuit, the voice collecting device, the voice filter circuit, the voice amplifying circuit and the analog-digital conversion circuit are sequentially connected, the voice filter circuit is used for filtering voice signals collected by the voice collecting device, the voice amplifying circuit is used for amplifying the voice signals subjected to filtering processing, and the analog-digital conversion signals are used for performing analog-digital conversion processing on the voice signals subjected to amplifying processing.
Compared with the scheme that the stress sheet sensor is used for detecting the rail in the prior art, the scheme that the stress of the rail is only measured to be the relative stress change from 0 to the stress of the current rail, and the actual absolute stress value of the rail (namely the rail break starting point and the current rail stress) cannot be detected, so that the detection result of the stress sheet sensor is inaccurate is adopted, the programmable FPGA processing circuit is used, the time difference of the received ultrasonic signal is calculated through the analysis of the correlation algorithm with the equal ratio-frequency ratio in the FPGA, and the corresponding rail absolute stress value and the stress change value are obtained by comparing the standard stress delay sample value table, so that the measurement result is accurate; when the sound detection device is used, firstly, the sound emitted by the normal rail is captured, then the sound is processed by the microcontroller, the sound is stored by the storage device, then the detected rail is knocked, the sound emitted by the rail is captured by the sound collection device, then the impurity removal and the modification are carried out, then the microcontroller and the comparison device are utilized to compare the sound signal with the original sound emitted by the normal rail, and the detection result is fed back by the alarm module, the data display device and the wireless communication device.
Preferably, the comparison means comprises: the tone color comparison module is used for comparing the tone color of the sound signal with that of the original sound;
the wavelength comparison module is used for comparing the wavelength of the sound signal with that of the original sound;
and the frequency comparison module is used for comparing the frequency of the sound signal with the frequency of the original sound.
Preferably, the abnormality warning device includes a speaker sound warning circuit and an L ED flashlight warning circuit.
Preferably, L ED in the L ED flash alarm circuit is red.
Preferably, the subway temperature sensor further comprises a temperature sensor, wherein the output end of the temperature sensor is connected with one input end of the microcontroller and is used for acquiring the temperature data of the whole subway rail stress detection device.
Preferably, the system further comprises a data display device, wherein an input end of the data display device is connected with an output end of the microcontroller and is used for displaying data sent by the microcontroller.
Preferably, the subway rail stress detection device further comprises a power supply device, and the power supply device is used for supplying power to the whole subway rail stress detection device.
Preferably, the power supply device comprises one or more of a mains power supply system, a photovoltaic power supply system, a storage battery and a rechargeable battery.
Preferably, the wireless communication device comprises one or more of 4G, 5G, WIFI and Bluetooth.
In the description of the present invention, it should be understood that the terms "counterclockwise", "clockwise", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description of the present invention, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Claims (8)
1. A rail stress detection device for a subway is characterized by comprising a microcontroller, a programmable FPGA processing circuit, an ultrasonic transmitter, two ultrasonic receivers, a sound acquisition device, a sound impurity removal device, a sound conversion device, a signal transmission device, an original sound recording device, a storage device, a comparison device and an abnormal alarm device;
the microcontroller is used for generating a control signal according to the received instruction information and sending the control signal to the ultrasonic transmitter;
the ultrasonic transmitter is electrically connected with the microcontroller and is used for receiving the control signal and sending an ultrasonic signal to the subway rail according to the control signal so as to be convenient for the ultrasonic signal to be transmitted in the subway rail;
the two ultrasonic receivers are respectively arranged at positions which are separated from the ultrasonic transmitter by preset distances and used for receiving the ultrasonic signals transmitted by the subway rail and sending the ultrasonic signals to the programmable FPGA processing circuit;
the programmable FPGA processing circuit is respectively electrically connected with the two ultrasonic receivers and is used for receiving the ultrasonic signals transmitted by the subway rail, carrying out filtering and FFT analysis on the ultrasonic signals, calculating the receiving time difference of the two ultrasonic signals and determining the absolute stress value of the subway rail according to the receiving time difference;
the output end of the sound acquisition device is connected with the input end of the sound impurity removal device, the output end of the sound impurity removal device is connected with the input end of the sound conversion device, the output end of the sound conversion device is connected with the output end of the signal transmission device, the output end of the signal transmission device is connected with one input end of the microcontroller, and the sound signal acquired by the sound acquisition device is transmitted to the microcontroller after impurity removal and conversion;
the output end of the original sound recording device is connected with one input end of the microcontroller and is used for recording the original sound of a normal subway rail;
the storage device is connected with the microcontroller in a bidirectional way and is used for storing the original sound sent by the microcontroller and calling the original sound by the microcontroller;
the comparison device is connected with the microcontroller in a bidirectional mode and used for comparing the sound signal with the original sound and sending a feedback signal to the microcontroller when the sound signal is not matched with the original sound, and the microcontroller is also used for receiving the feedback signal and sending the feedback signal to the abnormality alarm device;
and the input end of the abnormity warning device is connected with one output end of the microcontroller and is used for receiving the feedback signal and giving an alarm according to the feedback signal.
2. A rail stress detecting apparatus for a subway according to claim 1, wherein said comparing means includes: the tone color comparison module is used for comparing the tone color of the sound signal with that of the original sound;
the wavelength comparison module is used for comparing the wavelength of the sound signal with that of the original sound;
and the frequency comparison module is used for comparing the frequency of the sound signal with the frequency of the original sound.
3. A rail stress detecting apparatus for a subway according to claim 1, wherein said abnormality warning means includes a speaker sound warning circuit and an L ED flash lamp warning circuit.
4. A rail stress detection device for a subway according to claim 3, wherein L ED in said L ED flash light alarm circuit is red.
5. A rail stress detection device for a subway according to any one of claims 1-4, further comprising a temperature sensor, wherein an output end of said temperature sensor is connected with an input end of said microcontroller, and is used for collecting temperature data of the whole rail stress detection device for the subway.
6. A rail stress detecting device for a subway according to any one of claims 1-4, further comprising a data display device, wherein an input terminal of said data display device is connected to an output terminal of said microcontroller, for displaying data sent from said microcontroller.
7. A rail stress detecting device for a subway according to any one of claims 1-4, further comprising a power supply device for supplying power to the whole rail stress detecting device for a subway.
8. A rail stress detection apparatus for a subway according to claim 7, wherein said power supply apparatus includes one or more of a mains power supply system, a photovoltaic power supply system, a storage battery and a rechargeable battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921865092.4U CN210971101U (en) | 2019-10-31 | 2019-10-31 | Rail stress detection device for subway |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921865092.4U CN210971101U (en) | 2019-10-31 | 2019-10-31 | Rail stress detection device for subway |
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| CN210971101U true CN210971101U (en) | 2020-07-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112799402A (en) * | 2020-12-28 | 2021-05-14 | 广东电网有限责任公司 | Detection method and system for operation track of cable tunnel robot |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112799402A (en) * | 2020-12-28 | 2021-05-14 | 广东电网有限责任公司 | Detection method and system for operation track of cable tunnel robot |
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