CN217721389U - Data transmission device of tunnel safety monitoring equipment - Google Patents
Data transmission device of tunnel safety monitoring equipment Download PDFInfo
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- CN217721389U CN217721389U CN202221875855.5U CN202221875855U CN217721389U CN 217721389 U CN217721389 U CN 217721389U CN 202221875855 U CN202221875855 U CN 202221875855U CN 217721389 U CN217721389 U CN 217721389U
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Abstract
The utility model discloses a data transmission device of tunnel safety monitoring equipment, the utility model discloses at first convert the signal of starting to vibrate of each string sensor output into digital signal, then transmit to processing module, convert digital signal into CAN communication signal by processing module, pass through CAN transmission bus transmission to acquisition terminal by the CAN transceiver at last again, through the above-mentioned design, the utility model discloses convert each signal of starting to vibrate into the CAN signal and transmit, from this, when monitoring, utilize a cable CAN accomplish the signal transmission of a plurality of string sensors that vibrate to reduce the monitoring cost, be applicable to extensive application and popularization.
Description
Technical Field
The utility model belongs to the technical field of data transmission, concretely relates to tunnel safety monitoring equipment's data transmission device.
Background
Due to the influences of geological conditions, topographic conditions, climatic conditions, and various factors in the design, construction and operation processes, the tunnel is more susceptible to diseases such as cracking corrosion of a lining, water seepage, freezing damage and the like in the long-term use process than a common road, the diseases can directly or indirectly cause the tunnel to deform, and meanwhile, the tunnel can be influenced by external factors to generate stress in the use process, so that the accurate monitoring of the deformation and the stress of the tunnel is an important guarantee for the safe use of the tunnel.
At present, a vibrating wire sensor is mostly adopted to monitor the stress and deformation of a tunnel, wherein the vibrating wire sensor is widely applied to geotechnical engineering safety monitoring at home and abroad, can measure physical quantities such as stress strain, temperature, joint opening, leakage and deformation of geotechnical engineering, obtains corresponding measured parameters by measuring the vibration frequency of a vibrating wire through conversion, and has the advantages of simple structure, firmness and durability, strong anti-interference capability, reliable measured value, good stability and the like.
However, the vibrating wire sensors can only perform single-channel transmission, that is, one vibrating wire sensor needs to use a separate cable to perform transmission of corresponding monitoring data, most tunnels have long mileage, and the number of used vibrating wire sensors is large, so that the amount of cables used for data transmission is large when the existing vibrating wire sensors are used for tunnel safety monitoring, and therefore the monitoring cost is high.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a data transmission device of tunnel safety monitoring equipment for every vibrating wire sensor who exists among the solution prior art needs solitary cable when carrying out data transmission, thereby leads to the higher problem of tunnel monitoring cost.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
in a first aspect, the utility model provides a data transmission device of tunnel safety monitoring equipment, include: the device comprises a processing module, an A/D conversion module and a CAN transceiver;
the input end of the A/D conversion module is electrically connected with the output end of each vibrating wire sensor in the tunnel respectively, wherein the A/D conversion module is used for converting tunnel analog vibration signals transmitted by each vibrating wire sensor into digital vibration signals, and the output end of the A/D conversion module is electrically connected with the signal input end of the processing module;
the signal output part of the processing module is electrically connected with the input end of the CAN transceiver, wherein the processing module is used for converting each received digital oscillation starting signal into a CAN oscillation starting signal, the output end of the CAN transceiver is connected with the acquisition terminal through a CAN transmission bus in a communication manner, and the CAN transmission bus is used for transmitting the CAN oscillation starting signal to the acquisition terminal.
Based on the content disclosed above, the utility model discloses at first the signal conversion that shakes of each string sensor output is digital signal, then transmits to processing module, is CAN communication signal by processing module with digital signal conversion, passes through CAN transmission bus transmission to acquisition terminal by the CAN transceiver at last again, through the above-mentioned design, the utility model discloses convert each signal conversion that shakes into CAN signal and transmit, from this, when the monitoring, utilize a cable CAN accomplish a plurality of string sensors that shake's signal transmission to reduce the monitoring cost, be applicable to extensive application and popularization.
In one possible design, the data transmission apparatus further includes: and the output end of each vibrating wire sensor is electrically connected with the input end of the signal filter, the signal filter is used for digitally filtering the received analog oscillation starting signals of each tunnel, and the output end of the signal filter is electrically connected with the input end of the A/D conversion module.
Based on the above disclosure, the utility model discloses a set up signal filter, can realize each string sensor output signal's that shakes digital filtering to the noise of each tunnel simulation oscillation starting signal of filtering, so that follow-up when acquisition terminal carries out signal analysis, reduce the interference of noise to the analysis result.
In one possible design, the output end of the CAN transceiver is electrically connected with the CAN transmission bus through a CAN protection isolator; when the CAN transceiver is applied specifically, the CAN protection isolator is arranged between the CAN transceiver and the CAN transmission bus, so that the CAN transceiver CAN be prevented from being burnt by large voltage during transmission, and the function of protecting equipment is achieved.
In one possible design, the data transmission apparatus further includes: and the excitation signal output end of the processing module is electrically connected with the input end of the sensor excitation module, and the output end of the sensor excitation module is electrically connected with the controlled end of each vibrating wire sensor.
Based on the above disclosure, the acquisition terminal CAN send an acquisition instruction to the processing module by using the CAN transmission bus, and after receiving the acquisition instruction, the processing module sends an excitation signal to each vibrating wire sensor through the sensor excitation module, so that each vibrating wire sensor starts to vibrate, and the purpose of tunnel safety monitoring is further achieved; through the design, the function of automatic control of the vibrating wire sensor is realized, and the use convenience is improved.
In one possible design, the sensor excitation module employs an excitation signal generator.
In one possible design, the data transmission apparatus further includes: and the power supply module is characterized in that the input end of the power supply module is electrically connected with an alternating current power supply, and the output end of the power supply module is respectively and electrically connected with the power supply end of the processing module, the power supply end of the A/D conversion module and the power supply end of the CAN transceiver.
In one possible design, the resistance of the CAN transmission bus is between 40 and 180 ohms.
In one possible design, the resistance of the CAN transmission bus is 120 ohms.
Has the advantages that:
(1) The utility model discloses convert each oscillation starting signal into CAN signal and transmit, from this, when the monitoring, utilize a cable CAN accomplish the signal transmission of a plurality of vibrating wire sensors to reduce the monitoring cost, be applicable to extensive application and popularization.
Drawings
Fig. 1 is the utility model provides a data transmission device's of tunnel safety monitoring equipment structural schematic diagram.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be briefly described below with reference to the accompanying drawings and the description of the embodiments or the prior art, and it is obvious that the following description of the structure of the accompanying drawings is only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without any inventive work. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto.
It will be understood that, although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of example embodiments of the present invention.
It should be understood that, for the term "and/or" as may appear herein, it is merely an associative relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists independently, B exists independently, and A and B exist simultaneously; for the term "/and" as may appear herein, which describes another associative object relationship, it means that two relationships may exist, e.g., a/and B, may mean: a exists independently, and A and B exist independently; in addition, for the character "/" that may appear herein, it generally means that the former and latter associated objects are in an "or" relationship.
The embodiment is as follows:
as shown in fig. 1, the data transmission apparatus of the tunnel security monitoring device provided in this embodiment may include, but is not limited to: the device comprises a processing module, an A/D conversion module and a CAN transceiver; when the device is used specifically, the device is used for transmitting vibration signals generated by the vibrating wire sensors, wherein the vibrating wire sensors are installed in a tunnel at equal intervals and used for monitoring the stress, deformation and the like of the tunnel, meanwhile, the processing module, the A/D conversion module and the CAN transceiver form a signal conversion and transmission device of the vibrating wire sensors, and the device CAN realize signal transmission of the vibrating wire sensors by using one cable, so that the tunnel monitoring cost CAN be greatly reduced.
In specific implementation, for example, the input end of the a/D conversion module is electrically connected to the output end of each vibrating wire sensor in the tunnel, and the output end of the a/D conversion module is electrically connected to the signal input end of the processing module; the vibrating wire sensors are used for sending the tunnel analog oscillation starting signals corresponding to the vibrating wire sensors to the A/D conversion module for analog-to-digital conversion, and the A/D conversion module can transmit the digital oscillation starting signals to the processing module after converting the received tunnel analog oscillation starting signals into the digital oscillation starting signals so as to process the signals by means of the processing module.
In this embodiment, the processing module is configured to convert each received digital oscillation starting signal into a CAN oscillation starting signal, so as to perform data transmission by using a CAN transmission bus in the following step, that is, a signal output end of the processing module is electrically connected to an input end of the CAN transceiver, and an output end of the CAN transceiver is in communication connection with an acquisition terminal through the CAN transmission bus, and is configured to transmit the CAN oscillation starting signal to the acquisition terminal through the CAN transmission bus, thereby completing data transmission of the vibrating wire sensor.
Through the design, the utility model discloses a signal conversion with vibrating wire sensor output is the CAN signal to the output signal of a plurality of vibrating wire sensors of usable cable transmission, from this, CAN reduce tunnel monitoring cost by a wide margin, be adapted to extensive application and popularization.
In this embodiment, the processing module may be, but is not limited to, an STC12C2052 type processing chip, an STC89C54RD type processing chip, or an STM32F103 type processing chip; example a/D processing modules may be, but are not limited to, PCM1802DBR type a/D converters; similarly, the model of the exemplary CAN transceiver may be, but is not limited to, LDA82C251; of course, the processing module, the a/D conversion module and the CAN transceiver may be of other types, and are not limited to the foregoing examples.
Optionally, the exemplary acquisition terminal may be, but is not limited to, a Personal Computer (PC), a tablet computer, a smart phone, and/or a Personal Digital Assistant (PDA); meanwhile, the resistance of the CAN transmission bus is between 40 and 180 ohms, and preferably, the resistance of the CAN transmission bus is set to be 120 ohms.
In a specific application, in order to remove noise in each tunnel analog oscillation starting signal, in this embodiment, a signal filter is further provided, as shown in fig. 1, the signal filter is located between the vibrating wire sensor and the a/D conversion module, that is, an output end of each vibrating wire sensor is electrically connected to an input end of the signal filter, where the signal filter is configured to perform digital filtering on each received tunnel analog oscillation starting signal, and an output end of the signal filter is electrically connected to an input end of the a/D conversion module, and is configured to transmit the filtered tunnel analog oscillation starting signal to the a/D conversion module for analog-to-digital conversion; through above-mentioned design, noise in the usable signal filter filtering tunnel simulation signal of shaking to when subsequent signal analysis is carried out at the acquisition terminal, the interference of noise is reduced, from the accuracy that improves the analysis.
Alternatively, in this embodiment, the digital filtering may be performed by using, but not limited to, a FILTER01 type signal FILTER, and the type of the signal FILTER is not limited to the foregoing examples, and may be any FILTER that can implement a filtering function.
Further, for example, the output terminal of the CAN transceiver is electrically connected to the CAN transmission bus through a CAN protection isolator; in this embodiment, because when data transmission is performed, the current and voltage inside the CAN transmission bus is no more than 5V at most, and a voltage difference exists between the two parties of data transmission, therefore, when the voltage exceeds 5V, equipment may be burned, and therefore, the arrangement of the CAN protection isolator CAN prevent the equipment from being burned by large voltage, thereby playing a role in protecting the equipment.
In a possible design, in order to facilitate the control of the automatic operation of the vibrating wire sensor, a sensor excitation module is further provided, wherein an excitation signal output end of the processing module is electrically connected with an input end of the sensor excitation module, and an output end of the sensor excitation module is electrically connected with a controlled end of each vibrating wire sensor, so that the processing module and the sensor excitation module are utilized to realize the automatic control of the vibrating wire sensor; during specific work, the acquisition terminal sends an acquisition instruction to the processing module by using the CAN transmission bus, and after the processing module receives the acquisition instruction, the processing module sends an excitation signal to each vibrating wire sensor through the sensor excitation module, so that each vibrating wire sensor starts to vibrate, and the aim of monitoring the tunnel is fulfilled; through the design, the function of automatic control of the vibrating wire sensor is realized, and the use convenience is improved.
In this embodiment, the sensor excitation module may be, but is not limited to, an excitation signal generator, wherein the excitation signal generator may be, but is not limited to, C217001J.
In addition, this embodiment still is provided with power module for data transmission device to guarantee the power supply to each electron device in the device, wherein, power module's input electricity is connected alternating current power supply (for example 220V alternating current power supply), just power module's output electricity respectively connect processing module's feeder ear, A/D conversion module's feeder ear and the feeder ear of CAN transceiver to for aforementioned module power supply, guarantee the normal operating of device.
Optionally, for example, the power module may include, but is not limited to, an AC-DC conversion unit and a voltage reduction unit, where the AC-DC conversion unit may be, but is not limited to, a PNB044 type AC-DC conversion chip, and the voltage reduction unit may be, but is not limited to, a PW6206 type voltage reduction chip.
In this embodiment, if one vibrating wire sensor is used for data transmission by using one cable, taking 20 vibrating wire sensors for one tunnel as an example, the traditional transmission technology needs 20 cables, and the total length of the cables is about 10 kilometers on average; by using the data transmission device provided by the embodiment, data transmission of 20 vibrating wire sensors can be completed by using one 1 kilometer cable, so that the cable cost and the layout cost can be saved by 90%.
From this through the aforesaid elaboration to data transmission device, the utility model discloses a data transmission of a plurality of vibrating wire sensors is realized to usable cable to reduce tunnel monitoring cost by a wide margin, solved the difficult problem of tunnel monitoring signal transmission.
Finally, it should be noted that: the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. 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.
Claims (8)
1. A data transmission device of tunnel safety monitoring equipment is characterized by comprising: the device comprises a processing module, an A/D conversion module and a CAN transceiver;
the input end of the A/D conversion module is electrically connected with the output end of each vibrating wire sensor in the tunnel, wherein the A/D conversion module is used for converting tunnel analog oscillation starting signals transmitted by each vibrating wire sensor into digital oscillation starting signals, and the output end of the A/D conversion module is electrically connected with the signal input end of the processing module;
the signal output part of the processing module is electrically connected with the input end of the CAN transceiver, wherein the processing module is used for converting each received digital oscillation starting signal into a CAN oscillation starting signal, the output end of the CAN transceiver is connected with the acquisition terminal through a CAN transmission bus in a communication manner, and the CAN transmission bus is used for transmitting the CAN oscillation starting signal to the acquisition terminal.
2. The data transmission device of tunnel safety monitoring equipment according to claim 1, wherein the data transmission device further comprises: and the output end of the signal filter is electrically connected with the input end of the signal filter, the signal filter is used for performing digital filtering on the received analog oscillation starting signals of each tunnel, and the output end of the signal filter is electrically connected with the input end of the A/D conversion module.
3. The data transmission device of the tunnel safety monitoring equipment according to claim 1, wherein the output terminal of the CAN transceiver is electrically connected to the CAN transmission bus through a CAN protection isolator.
4. The data transmission device of the tunnel safety monitoring equipment according to claim 1, further comprising: and the excitation signal output end of the processing module is electrically connected with the input end of the sensor excitation module, and the output end of the sensor excitation module is electrically connected with the controlled end of each vibrating wire sensor.
5. The data transmission device of the tunnel safety monitoring equipment according to claim 4, wherein the sensor excitation module adopts an excitation signal generator.
6. The data transmission device of tunnel safety monitoring equipment according to claim 1, wherein the data transmission device further comprises: and the power supply module is characterized in that the input end of the power supply module is electrically connected with an alternating current power supply, and the output end of the power supply module is respectively and electrically connected with the power supply end of the processing module, the power supply end of the A/D conversion module and the power supply end of the CAN transceiver.
7. The data transmission device of the tunnel safety monitoring equipment according to claim 1, wherein the resistance of the CAN transmission bus is between 40 and 180 ohms.
8. The data transmission device of the tunnel safety monitoring equipment according to claim 7, wherein the resistance of the CAN transmission bus is 120 ohms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221875855.5U CN217721389U (en) | 2022-07-11 | 2022-07-11 | Data transmission device of tunnel safety monitoring equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221875855.5U CN217721389U (en) | 2022-07-11 | 2022-07-11 | Data transmission device of tunnel safety monitoring equipment |
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| Publication Number | Publication Date |
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| CN217721389U true CN217721389U (en) | 2022-11-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221875855.5U Active CN217721389U (en) | 2022-07-11 | 2022-07-11 | Data transmission device of tunnel safety monitoring equipment |
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| CN (1) | CN217721389U (en) |
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- 2022-07-11 CN CN202221875855.5U patent/CN217721389U/en active Active
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