CN209345136U - A kind of data transmission device analog quantity being converted into digital quantity - Google Patents
A kind of data transmission device analog quantity being converted into digital quantity Download PDFInfo
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- CN209345136U CN209345136U CN201821946346.0U CN201821946346U CN209345136U CN 209345136 U CN209345136 U CN 209345136U CN 201821946346 U CN201821946346 U CN 201821946346U CN 209345136 U CN209345136 U CN 209345136U
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Abstract
The utility model discloses a kind of data transmission devices for analog quantity being converted into digital quantity, it include: that the signal isolator is respectively used to receive the single channel flow simulation amount signal of acquisition, and the flow simulation amount signal of two-way isolation is exported, wherein the flow simulation amount signal after being isolated all the way is transmitted to data conversion module；The data conversion module includes: the flow simulation amount signal of input to be converted to voltage signal by input voltage circuit, and carry out analog-to-digital conversion by MSP430 single-chip microcontroller, and the Multipath digital quantity signal after conversion is accumulated in together.The flow simulation amount signal that multichannel uploads is ultimately converted to digital quantity all the way by data conversion module by the utility model, and digital quantity signal is uploaded to sampler for data by 485 ports, it is adopted in the case of instrument do not receive analog signals to meet number, guarantees the timeliness and accuracy that upload data.
Description
Technical field
The present invention relates to a kind of data transmission devices for analog quantity being converted into digital quantity, belong to data transmission set skill
Art field.
Background technique
With the development of society, population collection city is more and more, the sewage for generation of living increases therewith, while water resource
It pollutes increasingly severe.For the living environment for improving us, country payes attention to urban environmental protection further, to increase a city to sewage
Processing capacity and supervision, this requires existing sewage treatment plants in the discharge mark premise for strictly deferring to national requirements
The lower ability for increasing sewage treatment.
Presently, there are many sewage treatment plants to need extending capacity reformation, is changed to what multichannel was intake from the original main pipe of water inlet all the way
Main pipe, for the detection of flow of inlet water, there are no small problems.Environmental Protection Agency mainly passes through number and adopts instrument terminal and receive feed water flow at present
Data are measured, and requirement can only upload a flow of inlet water and a water flow, as there are multichannel water inlet so gesture after dilatation
Must will lead to each data can not upload simultaneously, there is very big drawback to the metering of sewage plant processing water rate in this way.
Therefore, to solve the above problems, researching and developing a kind of converting transmission intelligence between flowmeter and sampler for data
Module, i.e., a kind of data transmission device that multi-analog is converted into digital quantity are very important.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the present invention, which provides, a kind of to be converted into analog quantity
The data transmission device of digital quantity is ultimately converted to the flow simulation amount signal that multichannel uploads all the way by data conversion module
Digital quantity, and data communication is carried out by standard agreement and sampler for data by 485 ports, digital quantity signal is uploaded to number
Environment protection digital center is uploaded to according to sampling instrument, and then by network.
Technical solution: to achieve the above object, the technical solution adopted by the present invention are as follows:
A kind of data transmission device analog quantity being converted into digital quantity, including several signal isolators, data conversion
Module, sampler for data；
Wherein, the signal isolator be respectively used to receive acquisition single channel flow simulation amount signal, and export two-way every
From flow simulation amount signal, wherein the flow simulation amount signal after being isolated all the way is transmitted to data conversion module, another way is passed
It is sent to DCS central control system monitoring site flow status；
The data conversion module includes MSP430 single-chip microcontroller, input voltage circuit and the power circuit for power supply, is led to
It crosses input voltage circuit the flow simulation amount signal of input is converted into voltage signal and be transmitted to MSP430 single-chip microcontroller；It is described
MSP430 single-chip microcontroller is used to carry out the analog-to-digital conversion of input voltage signal, and the Multipath digital quantity signal after conversion is accumulated in one
It rises, it will be by the accumulated value of standard communication protocol (sum number adopts instrument matching) (cumulative obtained digital quantity signal) by 485 ports
It is uploaded to sampler for data, and then environment protection digital center is uploaded to by network.
Further, it is connected with for providing the reference voltage circuit of reference voltage, mainly on the MSP430 single-chip microcontroller
For what is compared, because can all have comparator inside ADC/DAC, for comparing input voltage and reference voltage, obtains and compare
As a result, being then converted into the simulation benchmark input pin (AREF) of corresponding numerical value access single-chip microcontroller.Reference voltage, generally monolithic
Machine carries circuit.
Further, the jtag port for realizing on-line debugging is also connected on the MSP430 single-chip microcontroller, it is main to use
The matched communications protocol of instrument is adopted in debugging modification sum number.
Further, it is also connected on the MSP430 single-chip microcontroller and uploads flow and communication baud rate in real time for showing
Digital display module.
Further, the digital display module uses LED charactrons.
The utility model has the advantages that a kind of data transmission device for analog quantity being converted into digital quantity provided by the invention, passes through number
The flow simulation amount signal that multichannel uploads is ultimately converted to digital quantity all the way according to conversion module, and by 485 ports by mark
Quasi- agreement and sampler for data carry out data communication, digital quantity signal are uploaded to sampler for data, so that meeting number adopts instrument not
In the case of receiving analog signals, guarantee the timeliness and accuracy that upload data.
Detailed description of the invention
Fig. 1 is the circuit topology schematic diagram of the embodiment of the present invention；
Fig. 2 is the circuit structure schematic diagram of data conversion module in the embodiment of the present invention；
Specific embodiment
The present invention will be further explained with reference to the accompanying drawings and embodiments.
As shown in Figs. 1-2 be a kind of data transmission device for analog quantity being converted into digital quantity, including several signals every
From device, data conversion module, sampler for data；
Wherein, the signal isolator be respectively used to receive acquisition single channel flow simulation amount signal, and export two-way every
From flow simulation amount signal, wherein all the way be isolated after flow simulation amount signal be transmitted to data conversion module；
The data conversion module includes MSP430 single-chip microcontroller, input voltage circuit and the power circuit for power supply, is led to
It crosses input voltage circuit the flow simulation amount signal of input is converted into voltage signal and be transmitted to MSP430 single-chip microcontroller；It is described
MSP430 single-chip microcontroller is used to carry out the analog-to-digital conversion of input voltage signal, and the Multipath digital quantity signal after conversion is accumulated in one
It rises, the accumulated value after standard communication protocol is uploaded to sampler for data by 485 ports.
In the present embodiment, it is connected on the MSP430 single-chip microcontroller for providing the reference voltage circuit of reference voltage；Institute
State the jtag port being also connected on MSP430 single-chip microcontroller for realizing on-line debugging；It is also connected on the MSP430 single-chip microcontroller
For showing that the digital display module for uploading flow and communication baud rate in real time, digital display module use LED charactrons；485
Instrument communication interface, serial communication parameter (interface type: RS485, baud rate: 1200-115200bps, number are adopted as sum number in port
According to position: 8, even-odd check: none, stop position: 1, communications protocol Modbus RTU).
A specific embodiment of the invention is as follows:
Each flow simulation amount signal is coupled on signal isolator, separates the identical flow of two-way by signal isolator
Analog signals are used for monitoring site flow status wherein being connected in DCS system all the way；Another way is connected to conversion module
On tetra- channels AI01+, AI01-, AI02+, AI02-, AI03+, AI03-, AI04+, AI04-；It is defeated in data conversion module
The flow simulation amount signal entered is voltage signal by input voltage circuit conversion, and then passes through MSP430 chip microcontroller modulus
It converts and is accumulated in together the Multipath digital quantity signal after conversion, number is connected to by conversion module output port 485+, 485-
According on 485 mouthfuls of sampling instrument, while being shown by digital display module and uploading flow and communication baud rate in real time.
The above is only a preferred embodiment of the present invention, it should be pointed out that: for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (5)
1. a kind of data transmission device for analog quantity being converted into digital quantity, which is characterized in that including several signal isolators,
Data conversion module, sampler for data；
Wherein, the signal isolator is respectively used to receive the single channel flow simulation amount signal of acquisition, and exports two-way isolation
Flow simulation amount signal, wherein the flow simulation amount signal after being isolated all the way is transmitted to data conversion module；
The data conversion module includes MSP430 single-chip microcontroller, input voltage circuit and the power circuit for power supply, by defeated
Enter potential circuit the flow simulation amount signal of input be converted to voltage signal to be transmitted to MSP430 single-chip microcontroller；The MSP430 is mono-
Piece machine is used to carry out the analog-to-digital conversion of input voltage signal, and the Multipath digital quantity signal after conversion is accumulated in together, and passes through
Accumulated value after standard communication protocol is uploaded to sampler for data by 485 ports.
2. a kind of data transmission device for analog quantity being converted into digital quantity according to claim 1, which is characterized in that
It is connected on the MSP430 single-chip microcontroller for providing the reference voltage circuit of reference voltage.
3. a kind of data transmission device for analog quantity being converted into digital quantity according to claim 1, which is characterized in that
The jtag port for realizing on-line debugging is also connected on the MSP430 single-chip microcontroller.
4. a kind of data transmission device for analog quantity being converted into digital quantity according to claim 1, which is characterized in that
It is also connected on the MSP430 single-chip microcontroller for showing the digital display module for uploading flow and communication baud rate in real time.
5. a kind of data transmission device for analog quantity being converted into digital quantity according to claim 4, which is characterized in that
The digital display module uses LED charactrons.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821946346.0U CN209345136U (en) | 2018-11-25 | 2018-11-25 | A kind of data transmission device analog quantity being converted into digital quantity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821946346.0U CN209345136U (en) | 2018-11-25 | 2018-11-25 | A kind of data transmission device analog quantity being converted into digital quantity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209345136U true CN209345136U (en) | 2019-09-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821946346.0U Active CN209345136U (en) | 2018-11-25 | 2018-11-25 | A kind of data transmission device analog quantity being converted into digital quantity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209345136U (en) |
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2018
- 2018-11-25 CN CN201821946346.0U patent/CN209345136U/en active Active
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