CN211928400U - Four-channel RS485 type sensor data acquisition module - Google Patents
Four-channel RS485 type sensor data acquisition module Download PDFInfo
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- CN211928400U CN211928400U CN201920964765.5U CN201920964765U CN211928400U CN 211928400 U CN211928400 U CN 211928400U CN 201920964765 U CN201920964765 U CN 201920964765U CN 211928400 U CN211928400 U CN 211928400U
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Abstract
The utility model discloses a four-channel RS485 type sensor data acquisition module, which comprises a control unit, wherein the control unit is connected with a first RS485 communication unit and a second RS485 communication unit, the control unit is also connected with a lithium battery, the lithium battery is connected with a charging circuit, the input end of the charging circuit is connected with a solar cell panel, and the output end of the charging circuit is connected with the lithium battery; the first RS485 communication unit is connected with a four-channel switching circuit, the four-channel switching circuit comprises four groups of relays, the four groups of relays are connected in parallel, one end of each group of relays is connected with a sensor, and the other end of each group of relays is connected with the first RS485 communication unit; the four-channel data acquisition unit is connected to the RS485 communication unit, so that the data acquisition module can be connected with four RS485 type sensors, a machine is multipurpose, and the use cost is greatly saved.
Description
Technical Field
The utility model relates to a data acquisition module, in particular to four-channel is applicable to data acquisition module of RS485 type 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 current data acquisition module power supply stability is poor and the wiring is troublesome, the utility model provides a power supply performance is good, the data acquisition module who is applicable to RS485 type sensor of simple, the four-channel of wiring.
In order to realize the purpose, the utility model provides a technical scheme is: a four-channel RS485 type sensor data acquisition module comprises a control unit, wherein the control unit is connected with a first RS485 communication unit and a second RS485 communication unit, the control unit is also connected with a lithium battery, the lithium battery is connected with a charging circuit, the input end of the charging circuit is connected with a solar cell panel, and the output end of the charging circuit is connected with the lithium battery; the first RS485 communication unit is connected with a four-channel switching circuit, the four-channel switching circuit comprises four groups of relays, the four groups of relays are connected in parallel, one end of each group of relays is connected with the sensor, and the other end of each group of relays is connected with the first RS485 communication unit.
As a preferred technical solution, the charging circuit is composed of a CN3791 chip and its peripheral circuits.
Further preferably, 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.
In the above technical scheme, the input end of the second RS485 communication unit is connected to the control unit, and the output end of the second RS485 communication unit is connected to the upper computer.
The utility model discloses beneficial effect for prior art is: the four-channel 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 four-channel 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 four-channel data acquisition unit is connected to the RS485 communication unit, so that the data acquisition module can be connected with four RS485 type sensors, the device is multipurpose, and the use cost is greatly saved.
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 diagram of a first RS485 communication unit;
fig. 4 is a circuit diagram of a second RS485 communication unit;
FIG. 5 is a schematic diagram of a four-channel switching circuit;
FIG. 6 is a circuit diagram of a charging circuit;
fig. 7 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 four-channel RS485 type sensor data acquisition module, 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 data acquisition module includes a control unit 41, in this embodiment, the control unit 41 employs a single chip microcomputer with model number MSP430F5438, and its peripheral circuit is shown in fig. 2, which is not described again in this embodiment.
The single chip microcomputer is connected with an RS485 communication unit 42 and an RS485 communication unit 43, wherein the RS485 communication unit 42 is used for collecting data of a sensor, in order to improve the collection capacity of a data collection module, a four-channel switching circuit 50 is connected to the input end of one RS485 communication unit 42, as shown in figure 5, the four-channel switching circuit comprises four groups of relays which are connected in parallel, one end of each group of relays is connected with a terminal, the terminal can be connected with an electric RS485 type sensor, and the other end of each group of relays is connected with the RS485 communication unit 42.
When the data of the sensor on a certain channel needs to be measured, the channel is opened only through the relay, the data of the sensor can be transmitted to the single chip microcomputer through the RS485 communication unit 42, the single chip microcomputer is multifunctional, and the use cost is greatly saved.
As shown in fig. 3, another RS485 communication unit 43 is used to transmit data to the upper computer, and as shown in fig. 4, one end of the RS485 communication unit is connected to the single chip microcomputer, and the other end is connected to the upper computer.
Through setting up two RS485 communication units 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. 6, so that the lithium battery can be charged by the charging circuit, and the lithium battery can be ensured to be in a continuous power-on state, thereby ensuring the reliability of the data acquisition module.
In addition, as shown in fig. 7, 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 (5)
1. The utility model provides a four-channel RS485 type sensor data acquisition module, includes the control unit, its characterized in that: the control unit is connected with a first RS485 communication unit and a second RS485 communication unit, the control unit is also connected with a lithium battery, the lithium battery is connected with a charging circuit, the input end of the charging circuit is connected with a solar cell panel, and the output end of the charging circuit is connected with the lithium battery; the first RS485 communication unit is connected with a four-channel switching circuit, the four-channel switching circuit comprises four groups of relays, the four groups of relays are connected in parallel, one end of each group of relays is connected with the sensor, and the other end of each group of relays is connected with the first RS485 communication unit.
2. The four-channel RS485 type sensor data acquisition module of claim 1, wherein: the charging circuit consists of a CN3791 chip and peripheral circuits thereof.
3. The four-channel RS485 type sensor data acquisition module of claim 1, wherein: the control unit adopts a singlechip.
4. The four-channel RS485 type sensor data acquisition module of claim 3, wherein: the single chip microcomputer is connected with a clock circuit consisting of an RX8025 chip and peripheral circuits thereof.
5. The four-channel RS485 type sensor data acquisition module of claim 1, wherein: the input end of the second RS485 communication unit is connected with the control unit, and the output end of the second RS485 communication unit is connected with the upper computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920964765.5U CN211928400U (en) | 2019-06-25 | 2019-06-25 | Four-channel RS485 type sensor data acquisition module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920964765.5U CN211928400U (en) | 2019-06-25 | 2019-06-25 | Four-channel RS485 type sensor data acquisition module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211928400U true CN211928400U (en) | 2020-11-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201920964765.5U Active CN211928400U (en) | 2019-06-25 | 2019-06-25 | Four-channel RS485 type sensor data acquisition module |
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| CN (1) | CN211928400U (en) |
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2019
- 2019-06-25 CN CN201920964765.5U patent/CN211928400U/en active Active
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