CN211375349U - Data acquisition module suitable for vibrating wire sensor - Google Patents
Data acquisition module suitable for vibrating wire sensor Download PDFInfo
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- CN211375349U CN211375349U CN201920964749.6U CN201920964749U CN211375349U CN 211375349 U CN211375349 U CN 211375349U CN 201920964749 U CN201920964749 U CN 201920964749U CN 211375349 U CN211375349 U CN 211375349U
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- acquisition module
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Abstract
The utility model discloses a data acquisition module suitable for vibrating wire sensor, including the control unit, the control unit is connected with RS485 communication unit and data acquisition unit, the control unit still is connected with the lithium cell, the lithium cell is connected with charging circuit, charging circuit's input is connected with solar cell panel, charging circuit's output with the lithium cell is connected; the single-point data acquisition module charges the lithium battery through the solar cell panel, and the lithium battery supplies power to the whole data acquisition module, so that the single-point data acquisition module is energy-saving and environment-friendly, saves wiring, is convenient to move and install, can be suitable for various occasions, and cannot be powered off; in addition, the RS485 communication unit is arranged for communication, so that networking can be realized by adopting one communication cable among the modules, the signal connecting line of the sensor is shortened, simplicity, convenience and economy are realized, and the measured data can be directly transmitted to an upper computer, so that the test is convenient.
Description
Technical Field
The utility model relates to a data acquisition module, in particular to data acquisition module suitable for vibrating wire formula sensor.
Background
The data acquisition module is the bridge that computer and outside physics world are connected, the wide application is in automation industry and geotechnical engineering field, current data acquisition module generally uses commercial power or ordinary battery to supply power, this kind of power supply mode needs the wiring, in case the commercial power appears cutting off the power supply or the battery power is used up, lead to the unable power supply of data acquisition module, stability and sustainability are poor, in addition, current data acquisition module adopts serial communication, need many cable junction between a plurality of modules, it is troublesome to lay wire.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that the power supply stability of the existing data acquisition module is poor and the wiring is troublesome, the utility model provides a data acquisition module of vibrating wire sensor that the power supply performance is good, the wiring is simple.
In order to realize the purpose, the utility model provides a technical scheme is: the utility model provides a data acquisition module suitable for vibrating wire formula sensor, includes the control unit, the control unit is connected with RS485 communication unit and data acquisition unit, the control unit still is connected with the lithium cell, the lithium cell is connected with charging circuit, charging circuit's input is connected with solar cell panel, charging circuit's output with the lithium cell is connected.
In the above technical scheme, the data acquisition unit includes a signal excitation circuit, an input end of the signal excitation circuit is connected with the sensor, an output end of the signal excitation circuit is connected with a signal amplification circuit, and an output end of the signal amplification circuit is connected with the control unit.
On the basis of the above technical scheme, preferably, the data acquisition unit further comprises a temperature acquisition circuit, the temperature acquisition circuit comprises an LTC1799 chip, an input end of the LTC1799 chip is connected with the temperature sensor, and an output end of the LTC1799 chip is connected with the control unit.
In the technical scheme, the input end of the RS485 communication unit is connected with the control unit, and the output end of the RS485 communication unit is connected with the upper computer.
In the above technical solution, as a preferable technical solution, the charging circuit is composed of a CN3791 chip and a peripheral circuit thereof.
As a preferred technical scheme, the control unit adopts a single chip microcomputer.
On the basis of the above technical solution, preferably, the single chip microcomputer is connected with a clock circuit composed of an RX8025 chip and a peripheral circuit thereof.
The utility model discloses beneficial effect for prior art is: the single-point data acquisition module charges the lithium battery through the solar cell panel, and the lithium battery supplies power to the whole data acquisition module, so that the single-point data acquisition module is energy-saving and environment-friendly, saves wiring, is convenient to move and install, can be suitable for various occasions, and cannot be powered off; in addition, the RS485 communication unit is arranged for communication, so that networking can be realized by adopting one communication cable among the modules, the signal connecting line of the sensor is shortened, simplicity, convenience and economy are realized, and the measured data can be directly transmitted to an upper computer, so that the test is convenient.
Drawings
FIG. 1 is an overall structure of the present invention;
FIG. 2 is a circuit diagram of a control unit;
FIG. 3 is a circuit schematic of the excitation circuit;
FIG. 4 is a circuit schematic of an amplification circuit;
FIG. 5 is a circuit schematic of a temperature acquisition circuit;
fig. 6 is a circuit diagram of an RS485 communication unit;
FIG. 7 is a circuit diagram of a charging circuit;
fig. 8 is a circuit diagram of a clock circuit.
Detailed Description
The following describes the present invention with reference to the accompanying drawings. 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. In addition, the technical features related to the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in figure 1, a data acquisition module suitable for vibrating wire formula sensor, this data acquisition module embeds lithium cell 10, supply power by lithium cell 10, lithium cell 10 is charged for it by solar cell panel 20, charging circuit 30's input is connected with solar cell panel 20, the output is connected with lithium cell 10, charge for lithium cell 10 through solar cell panel 20, lithium cell 10 is the power supply of whole data acquisition module again, so not only energy-concerving and environment-protective, and the wiring has been saved, convenient removal and installation, make data acquisition module can be suitable for in multiple occasion, and the condition of outage can not appear.
The data acquisition part of the single-point data acquisition module includes a control unit 41, in this embodiment, the control unit 41 employs a single chip microcomputer with model number MSP430F5418, and its peripheral circuit is shown in fig. 2, which is not described again in this embodiment.
The single chip microcomputer is connected with a data acquisition unit 42, the data acquisition unit 42 comprises two parts, one is a vibrating wire type sensor data acquisition part, the other is a temperature sensor data acquisition part, the vibrating wire type sensor data acquisition part comprises an excitation circuit and an amplification circuit, as shown in fig. 3, the excitation circuit comprises two groups of excitation units consisting of five triodes, the two excitation units are respectively connected with two input pins of the sensor, the output end of the excitation circuit is connected to the amplification circuit, as shown in fig. 4, the amplification circuit consists of three operational amplifiers, the output end of the amplification circuit is connected to the single chip microcomputer, signals of the vibrating wire type sensor are transmitted to the single chip microcomputer after passing through the excitation circuit and the amplification circuit, and accordingly data acquisition of the vibrating wire type sensor is achieved.
In addition, the data acquisition unit is also provided with a temperature acquisition circuit special for detecting the temperature sensor, as shown in fig. 5, the temperature acquisition circuit comprises an LTC1799 chip, the input end of the LTC1799 chip is connected with the temperature sensor, the output end of the LTC1799 chip is connected with the single chip microcomputer, a specific relation exists between the oscillation frequency and the temperature, namely, different temperatures correspond to different oscillation frequencies, and the temperature value can be measured by measuring the output frequency of the oscillator.
The data acquisition module is communicated with the upper computer through 485, so that the single chip microcomputer is connected with an RS485 communication unit 43, as shown in figure 6, one end of the single chip microcomputer is connected with the single chip microcomputer, and the other end of the single chip microcomputer is connected with the upper computer.
Through setting up RS485 communication unit and coming the communication for adopt a communication cable can the network deployment between each module, shortened sensor signal connecting wire, simple and convenient economy, measured data can directly pass to the host computer moreover, convenient test.
The charging circuit 30 comprises a CN3791 chip, and a peripheral circuit of the charging circuit is as shown in fig. 7, and the charging circuit can charge the lithium battery, so that the lithium battery can be ensured to be in a continuous power-on state, and the reliability of the data acquisition module is ensured.
In addition, as shown in fig. 8, the single chip microcomputer is connected with a clock circuit composed of an RX8025 chip and a peripheral circuit thereof, and the built-in clock has two main functions, namely, recording the real-time of each acquisition and waking up the single chip microcomputer to complete the acquisition at regular time, so that the circuit ensures the acquisition effect of the data acquisition module.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is to be accorded the full scope of the claims.
Claims (7)
1. The utility model provides a data acquisition module suitable for vibrating wire formula sensor, includes the control unit, its characterized in that: the control unit is connected with RS485 communication unit and data acquisition unit, the control unit still is connected with the lithium cell, the lithium cell is connected with charging circuit, charging circuit's input is connected with solar cell panel, charging circuit's output with the lithium cell is connected.
2. The data acquisition module of claim 1, wherein: the data acquisition unit comprises a signal excitation circuit, the input end of the signal excitation circuit is connected with the sensor, the output end of the signal excitation circuit is connected with a signal amplification circuit, and the output end of the signal amplification circuit is connected with the control unit.
3. The data acquisition module of claim 1, wherein: the data acquisition unit still includes the temperature acquisition circuit, the temperature acquisition circuit includes the LTC1799 chip, the input and the temperature sensor of LTC1799 chip are connected, the output of LTC1799 chip with the control unit is connected.
4. The data acquisition module of claim 1, wherein: the input end of the RS485 communication unit is connected with the control unit, and the output end of the RS485 communication unit is connected with the upper computer.
5. The data acquisition module of claim 1, wherein: the charging circuit consists of a CN3791 chip and peripheral circuits thereof.
6. The data acquisition module of claim 1, wherein: the control unit adopts a singlechip.
7. The data acquisition module of claim 6, wherein: the single chip microcomputer is connected with a clock circuit consisting of an RX8025 chip and peripheral circuits thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920964749.6U CN211375349U (en) | 2019-06-25 | 2019-06-25 | Data acquisition module suitable for vibrating wire sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920964749.6U CN211375349U (en) | 2019-06-25 | 2019-06-25 | Data acquisition module suitable for vibrating wire sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211375349U true CN211375349U (en) | 2020-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920964749.6U Active CN211375349U (en) | 2019-06-25 | 2019-06-25 | Data acquisition module suitable for vibrating wire sensor |
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| CN (1) | CN211375349U (en) |
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2019
- 2019-06-25 CN CN201920964749.6U patent/CN211375349U/en active Active
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