CN208903424U - A kind of internet of things data acquisition module - Google Patents
A kind of internet of things data acquisition module Download PDFInfo
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- CN208903424U CN208903424U CN201821738949.1U CN201821738949U CN208903424U CN 208903424 U CN208903424 U CN 208903424U CN 201821738949 U CN201821738949 U CN 201821738949U CN 208903424 U CN208903424 U CN 208903424U
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Abstract
The utility model discloses a kind of internet of things data acquisition modules, it include: the signal transmitting and receiving circuit of setting in internet of things data acquisition module, the signal transmitting and receiving circuit includes: external power supply, RS485 transceiver, first resistor, second resistance, the first optical coupling isolator, the second optical coupling isolator, input power, 3rd resistor, the 4th resistance, triode, the 5th resistance, the 6th resistance, the first bi-directional voltage stabilizing diode, the second bi-directional voltage stabilizing diode and third bi-directional voltage stabilizing diode；Sending and receiving for data is controlled by the CTRL pin that the signal transmitting and receiving circuit may not need single-chip microcontroller, only need to connect RXD and the TXD pin of single-chip microcontroller, without DE the and RE pin with single-chip microcontroller connection transceiver, simplify the reception of signal and the control process sent, the strong antijamming capability of the signal transmitting and receiving circuit simultaneously, structure is simple, and communication reliability is high, and circuit stability is strong.
Description
Technical field
The utility model belongs to internet of things field, and in particular to a kind of internet of things data acquisition module.
Background technique
Internet of Things can be established based on electronic tag and EPC code and be formed material object on the basis of computer internet mutually
Networking network, objective are to realize the Real-Time Sharing and intercommunication of global Item Information, and the system structure of Internet of Things is by information collection system
System, PML information server, product name server and four part of application management system composition；Wherein information acquisition system is
Data collection system, be mainly based upon Internet of Things carry out data real-time detection, and in detection module carry out data processing after again
Data exchange is carried out with network, the real-time acquisition of Lai Shixian data, real-time update are realized automatic from the feedback of these data
Control function greatly reduces the occupancy of manpower.
Wherein, the data acquisition module in data collection system needs to be related to the reception and transmission of data, available data
Reception and transmission rely primarily on single-chip microcontroller control pin CTRL realize, need real-time control single-chip microcontroller CTRL pin height electricity
It is flat that control the reception and transmission that signal transmitting and receiving circuit carries out data, the line complexity of single-chip microcontroller and transceiver controls trouble,
Anti-interference ability is not high.
Utility model content
To overcome technological deficiency of the existing technology, the utility model discloses a kind of internet of things data acquisition modules.
Technical solution adopted by the utility model to solve its technical problems is a kind of internet of things data acquisition module, packets
Include: the signal transmitting and receiving circuit of setting in internet of things data acquisition module, the signal transmitting and receiving circuit include: external power supply,
RS485 transceiver, first resistor, second resistance, the first optical coupling isolator, the second optical coupling isolator, input power, third electricity
Resistance, the 4th resistance, triode, the 5th resistance, the 6th resistance, the first bi-directional voltage stabilizing diode, the second bi-directional voltage stabilizing diode and
Third bi-directional voltage stabilizing diode；
The external power supply connects the first pin of the first optical coupling isolator by first resistor, the first optical coupling isolator
Second pin connects data receiver pin, the first end of the third pin connection 3rd resistor of the first optical coupling isolator, third electricity
The RO pin of the second end connection RS485 transceiver of resistance, the first end of 3rd resistor are also connected with input power；The external power supply
The first pin of the second optical coupling isolator is connected by second resistance, the second pin connection data of the second optical coupling isolator are sent
Pin, the base stage of the third pin connecting triode of the second optical coupling isolator, the 4th pin ground connection of the second optical coupling isolator, three
The emitter of pole pipe is grounded, and the collector of triode connects input power by the 4th resistance, and the collector of triode is also connected with
The RE pin and DE pin of RS485 transceiver, the DI pin ground connection of RS485 transceiver；
The VCC pin of RS485 transceiver connects input power, and the B pin of RS485 transceiver passes through the 5th resistance eutral grounding,
The A pin of RS485 transceiver connects input power by the 6th resistance, connects between the B pin and A pin of RS485 transceiver
Second bi-directional voltage stabilizing diode, the B pin and A pin of RS485 transceiver also pass through the first bi-directional voltage stabilizing diode and the respectively
Three bi-directional voltage stabilizing diodes ground connection.
Preferably, the chip model that first optical coupling isolator and the second optical coupling isolator use is MOC3020.
Preferably, the VCC pin of the RS485 transceiver is also grounded by first capacitor.
Preferably, the input power is converted by 5V power supply by integrated isolated power supply chip.
Preferably, the chip model that the integrated isolated power supply chip uses is B0505S-1W.
Preferably, the VIN pin of the integrated isolated power supply chip connects 5V power supply, integrates the GND of isolated power supply chip
Pin ground connection, the VOUT pin for integrating isolated power supply chip connect input power, and the VOUT pin for integrating isolated power supply chip is logical
The second capacitor and first resistor ground connection in parallel are crossed, the OV pin ground connection of isolated power supply chip is integrated.
The beneficial effects of the utility model are: being controlled by the CTRL pin that the signal transmitting and receiving circuit may not need single-chip microcontroller
Data send and receive, it is only necessary to RXD and the TXD pin for connecting single-chip microcontroller, without with single-chip microcontroller connection transceiver DE and
RE pin simplifies the reception of signal and the control process sent, while the strong antijamming capability of the signal transmitting and receiving circuit, structure
Simply, communication reliability is high, and circuit stability is strong.
Detailed description of the invention
Fig. 1 is the circuit diagram of signal transmitting and receiving circuit described in the utility model.
Fig. 2 is the pin wiring diagram of integrated isolated power supply chip described in the utility model.
Appended drawing reference: VDD- external power supply, R1- first resistor, R2- second resistance, the first optical coupling isolator of OC1-, OC2-
Second optical coupling isolator, VS- input power, R3- 3rd resistor, the 4th resistance of R4-, T1- triode, the 5th resistance of R5-, R6-
6th resistance, DW1- the first bi-directional voltage stabilizing diode, DW2- the second bi-directional voltage stabilizing diode, two pole of DW3- third bi-directional voltage stabilizing
Pipe, IC2- integrate isolated power supply chip, C1- first capacitor, IC1-RS485 transceiver.
Specific embodiment
More detailed description is done to the embodiments of the present invention below in conjunction with attached drawing and appended drawing reference, makes to be familiar with ability
The technology people in domain can implement accordingly after studying this specification carefully.It should be appreciated that specific embodiment described herein is only to solve
The utility model is released, is not used to limit the utility model.
A kind of internet of things data acquisition module, comprising: the signal transmitting and receiving circuit of setting in internet of things data acquisition module,
The signal transmitting and receiving circuit includes: external power supply VDD, RS485 transceiver ic 1, first resistor R1, second resistance R2, the first light
Coupling isolator OC1, the second optical coupling isolator OC2, input power VS, 3rd resistor R3, the 4th resistance R4, triode T1, the 5th
Resistance R5, the 6th resistance R6, the first bi-directional voltage stabilizing diode DW1, the second bi-directional voltage stabilizing diode DW2 and third bi-directional voltage stabilizing two
Pole pipe DW3；
The external power supply VDD passes through the first pin of the first optical coupling isolator of first resistor R1 connection OC1, the first optocoupler
The second pin of isolator OC1 connects data receiver pin RXD, the third pin connection third electricity of the first optical coupling isolator OC1
Hinder the first end of R3, the RO pin of the second end connection RS485 transceiver ic 1 of 3rd resistor R3, the first end of 3rd resistor R3
It is also connected with input power VS；The external power supply VDD draws by the first of the second optical coupling isolator of second resistance R2 connection OC2
The second pin connection data of foot, the second optical coupling isolator OC2 send pin TXD, the third pin of the second optical coupling isolator OC2
The base stage of connecting triode T1, the 4th pin ground connection of the second optical coupling isolator OC2, the emitter ground connection of triode T1, three poles
The collector of pipe T1 is also connected with RS485 transceiver ic 1 by the 4th resistance R4 connection input power, the collector of triode T1
RE pin and DE pin, the DI pin ground connection of RS485 transceiver ic 1；
The VCC pin of RS485 transceiver ic 1 connects input power VS, and the B pin of RS485 transceiver ic 1 passes through the 5th electricity
R5 ground connection is hindered, by the 6th resistance R6 connection input power, the B of RS485 transceiver ic 1 draws the A pin of RS485 transceiver ic 1
The B pin and A pin that the second bi-directional voltage stabilizing diode DW2, RS485 transceiver ic 1 is connected between foot and A pin also pass through respectively
First bi-directional voltage stabilizing diode DW1 and third bi-directional voltage stabilizing diode DW3 ground connection；
Specifically, it is designed by the light-coupled isolation of the first optical coupling isolator OC1 and the second optical coupling isolator OC2, it will be external
Power supply and RS485 transceiver ic 1 carry out electrical isolation, eliminate the interference that electrical connection generates, improve internet of things data acquisition
The anti-interference of module enhances the communication reliability of internet of things data acquisition module；The working principle of the transmission circuit are as follows: when
When in data receiver mode, it is high level that data, which send pin TXD, at this time, and triode T1 is NPN type triode, at this time three pole
Pipe T1 receives high level signal conducting, since the conducting of triode T1 is grounded, the RE pin and DE of RS485 transceiver ic 1 at this time
Pin ground connection, input low level signal, RS485 transceiver ic 1 enter data receiver mode, the RO pin of RS485 transceiver ic 1
React the data transmitted；Conversely, if triode T1 receives low level signal and cuts when data transmission pin TXD is low level
Only, the RE pin of RS485 transceiver ic 1 connect input power VS with DE pin at this time, receives high level signal and enters data hair
Mode is sent, the voltage between the A pin and B pin of RS485 transceiver ic 1 depends on and the 5th resistance R5 and the 6th resistance R6；
Wherein the 5th resistance R5 is pull-up resistor, and the 6th resistance R6 is pull down resistor, and the first zener diode DW1 is for steady
Determine the voltage at the B pin of RS485 transceiver ic 1, the A that the second zener diode DW2 is used to stablize RS485 transceiver ic 1 draws
Voltage at foot, third zener diode DW3 are used to stablize the voltage between the A pin of RS485 transceiver ic 1 and B pin,
For protecting RS485 transceiver ic 1 not damaged by high voltage；
The first resistor R1, second resistance R2 and 3rd resistor R3 are current-limiting resistance；4th resistance R4 is triode
The pull-up resistor of T1；
Sending and receiving for data is controlled by the CTRL pin that the signal transmitting and receiving circuit may not need single-chip microcontroller, it is only necessary to
RXD and the TXD pin for connecting single-chip microcontroller simplify letter without DE the and RE pin with single-chip microcontroller connection RS485 transceiver ic 1
Number reception and the control process sent, while the strong antijamming capability of the signal transmitting and receiving circuit, communication reliability is high, and circuit is steady
It is qualitative strong；
Wherein, the first pin of the first optical coupling isolator OC1 and the second optical coupling isolator OC2 are the sun of light emitting diode
Pole, second pin are the cathode of light emitting diode, and third pin is the collector of phototriode, and the 4th pin is light
The emitter of quick triode；Each pin definition of RS485 transceiver ic 1 has factory businessman customized；The of P1 in attached drawing
One end 1 is the electrical wire interface end for needing to communicate with the A pin of RS485 transceiver ic 1 with B pin with second end 2, is completed subsequent
Communication scheme.
The chip model that the first optical coupling isolator OC1 and the second optical coupling isolator OC2 are used is MOC3020.
The VCC pin of the RS485 transceiver ic 1 also passes through first capacitor C1 and is grounded；The first capacitor C1 is for mentioning
The power supply stability of high RS485 transceiver ic 1, serves jamproof.
The input power VS is converted by 5V power supply by integrated isolated power supply chip IC 2；The integrated isolation electricity
Source chip IC2 is used to generate the completely isolated power supply of the microprocessor circuit constituted with RS485 transceiver ic 1 and exports, further
Improve the interference free performance of signal transmitting and receiving circuit.
The chip model that the integrated isolated power supply chip IC 2 uses is B0505S-1W.
The VIN pin of the integrated isolated power supply chip IC 2 connects 5V power supply, and the GND of integrated isolated power supply chip IC 2 draws
Foot ground connection, the VOUT pin for integrating isolated power supply chip IC 2 connect input power, and the VOUT of integrated isolated power supply chip IC 2 draws
Foot integrates the OV pin ground connection of isolated power supply chip IC 2 by the second capacitor C2 and first resistor R1 ground connection in parallel；Described
Two capacitor C2 are anti-interference capacitor, and the second capacitor C2 and first resistor R1 are the conventional connection of integrated isolated power supply chip IC 2.
The above content is the further descriptions made in conjunction with specific preferred embodiment to the utility model, cannot recognize
Determine specific embodiment of the present utility model to be only limited to these instructions.For the common skill of the utility model technical field
For art personnel, the other embodiments obtained in the case where not departing from the technical solution of the utility model be should be included in practical
In novel protection scope.
Claims (6)
1. a kind of internet of things data acquisition module, it is characterised in that: include: the signal of setting in internet of things data acquisition module
Transmission circuit, the signal transmitting and receiving circuit include: external power supply, RS485 transceiver, first resistor, second resistance, the first optocoupler
Isolator, the second optical coupling isolator, input power, 3rd resistor, the 4th resistance, triode, the 5th resistance, the 6th resistance,
One two-way zener diode, the second bi-directional voltage stabilizing diode and third bi-directional voltage stabilizing diode；
The external power supply by first resistor connect the first optical coupling isolator the first pin, the second of the first optical coupling isolator
Pin connects data receiver pin, and the third pin of the first optical coupling isolator connects the first end of 3rd resistor, 3rd resistor
Second end connects the RO pin of RS485 transceiver, and the first end of 3rd resistor is also connected with input power；The external power supply passes through
Second resistance connects the first pin of the second optical coupling isolator, and the second pin connection data transmission of the second optical coupling isolator is drawn
Foot, the base stage of the third pin connecting triode of the second optical coupling isolator, the 4th pin ground connection of the second optical coupling isolator, three poles
The emitter of pipe is grounded, and the collector of triode connects input power by the 4th resistance, and the collector of triode is also connected with
The RE pin and DE pin of RS485 transceiver, the DI pin ground connection of RS485 transceiver；
The VCC pin of RS485 transceiver connects input power, and the B pin of RS485 transceiver passes through the 5th resistance eutral grounding, RS485
The A pin of transceiver connects input power by the 6th resistance, and second pair is connected between the B pin and A pin of RS485 transceiver
To zener diode, the B pin and A pin of RS485 transceiver are also two-way by the first bi-directional voltage stabilizing diode and third respectively
Zener diode ground connection.
2. a kind of internet of things data acquisition module as described in claim 1, it is characterised in that: first optical coupling isolator and
The chip model that second optical coupling isolator uses is MOC3020.
3. a kind of internet of things data acquisition module as described in claim 1, it is characterised in that: the VCC of the RS485 transceiver
Pin is also grounded by first capacitor.
4. a kind of internet of things data acquisition module as described in claim 1, it is characterised in that: the input power is by 5V power supply
It is converted by integrated isolated power supply chip.
5. a kind of internet of things data acquisition module as claimed in claim 4, it is characterised in that: the integrated isolated power supply chip
The chip model used is B0505S-1W.
6. a kind of internet of things data acquisition module as claimed in claim 5, it is characterised in that: the integrated isolated power supply chip
VIN pin connect 5V power supply, integrate isolated power supply chip GND pin ground connection, integrate isolated power supply chip VOUT pin
Input power is connected, the VOUT pin of isolated power supply chip is integrated by the second capacitor and first resistor ground connection in parallel, integrates
The OV pin of isolated power supply chip is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821738949.1U CN208903424U (en) | 2018-10-25 | 2018-10-25 | A kind of internet of things data acquisition module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821738949.1U CN208903424U (en) | 2018-10-25 | 2018-10-25 | A kind of internet of things data acquisition module |
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| CN208903424U true CN208903424U (en) | 2019-05-24 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111756398A (en) * | 2020-06-04 | 2020-10-09 | 苏州大学文正学院 | Utilize in experimental facilities intelligent monitoring system's communication circuit |
| CN112187631A (en) * | 2020-08-24 | 2021-01-05 | 浙江布兰图智慧能源科技有限公司 | Gateway capable of automatically switching receiving and transmitting modes |
-
2018
- 2018-10-25 CN CN201821738949.1U patent/CN208903424U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111756398A (en) * | 2020-06-04 | 2020-10-09 | 苏州大学文正学院 | Utilize in experimental facilities intelligent monitoring system's communication circuit |
| CN112187631A (en) * | 2020-08-24 | 2021-01-05 | 浙江布兰图智慧能源科技有限公司 | Gateway capable of automatically switching receiving and transmitting modes |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190904 Address after: 610000 Chengdu high tech Zone, Xiaojiahe Province, No. two ring road, south of the No. four, No., No. 16 Patentee after: Sichuan Boao Environmental Protection Technology Co., Ltd. Address before: 610000 Tianfu Sanjie, Chengdu High-tech Zone, Sichuan Province, No. 69, Building 10, 1013 Patentee before: Sichuan Pengxiang Electrical Equipment Co., Ltd. |