CN208188826U - A kind of high-precision signal transmission conversion device - Google Patents
A kind of high-precision signal transmission conversion device Download PDFInfo
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- CN208188826U CN208188826U CN201820876697.2U CN201820876697U CN208188826U CN 208188826 U CN208188826 U CN 208188826U CN 201820876697 U CN201820876697 U CN 201820876697U CN 208188826 U CN208188826 U CN 208188826U
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Abstract
The utility model discloses a kind of high-precision signals to transmit conversion device, and the USB including DC power supply socket, the voltage stabilizing chip of model L7805, USB interface, the single-chip microcontroller of model STC15W204S, 16 analog-digital chips of model AD5420, model C H340G turns TTL chip, current output interface, three resistance, ten capacitors；Compared with prior art, the utility model is designed reasonably, cost is relatively low and can be used for digital-to-analogue conversion, the electric current that 4-20mA is converted to when can receive 16 digits that spread out ofs by RS232 of X86 computer factually exports, improve signal transfer efficiency, it lays the foundation, has the value of popularization and application for the research and development of electronic product.
Description
Technical field
The utility model relates to design of electronic circuits technical fields more particularly to a kind of high-precision signal to transmit conversion device.
Background technique
The use of digital analog converter is on the market mostly at present 10, it is less have 16 digit mode converters it is not direct with
APS instrument is connected directly, larger to replace its difficult design.
Utility model content
The purpose of this utility model be that solve the above-mentioned problems and provide it is a kind of design rationally, cost is relatively low and can
To transmit conversion device for the high-precision signal of digital-to-analogue conversion, which can receive 16 that X86 computer is spread out of by RS232
Data are converted to the electric current output of 4-20mA in real time.
The utility model achieves the above object through the following technical schemes:
The utility model includes DC power supply socket, the voltage stabilizing chip of model L7805, USB interface, model STC15W204S
Single-chip microcontroller, 16 analog-digital chips of model AD5420, model C H340G USB turn TTL chip, current output interface, three
A resistance, ten capacitors；
The DC power supply that the DC power supply socket access power supply electricity is 12V/1A, the 1 foot connection power supply of DC power supply socket is just
Pole, 2 feet connect power cathode, the capacitor of 1 foot connection 10uF is followed by power cathode, and 1 foot of voltage stabilizing chip connects positive pole, 2
The capacitor that foot connection power cathode, 3 feet connect 10uF is followed by power cathode, 3 foot output+5V power supplys；
2 feet of the single-chip microcontroller connect 5V power supply, and 4 feet connect power cathode, are arranged between the end VCC and the end GND of single-chip microcontroller and hold
Amount is the capacitor of 1uF；
16 feet that the USB turns TTL chip connect 5V power supply, 1 foot meets GND, 2 feet connect 5 feet of single-chip microcontroller, 3 feet connect single-chip microcontroller
6 feet, between 4 feet and power cathode the capacitor of 0.1uF is set, 3 feet, 6 feet of 5 feet access USB interface connect 2 feet of USB interface,
7 feet and 8 feet are separately connected one 12M crystal oscillator of connection between the capacitor to power cathode, 7 feet and 8 feet of a 22pF；
24 feet of 16 analog-digital chips are connected on 12V power supply, and 1 foot, 4 feet, 5 feet, 11 feet, 12 feet connect
It is connected on power cathode, the capacitor of a 0.1uF is provided between 2 feet and power cathode, one is connected between 2 feet and 3 feet
The resistance of 10K, 7 feet connect 1 foot of single-chip microcontroller, and 8 feet connect 8 feet of single-chip microcontroller, and 9 feet connect 7 feet of single-chip microcontroller, 16 feet connection one
The resistance of a 15K is followed by power cathode and is connected with 2 feet of current output interface, connection 0.1uF electricity after 14 feet and 15 feet are connected
Hold and then connect power cathode, is connected after the resistance in 19 feet connection, 100 Europe with 1 foot of current output interface, 21 feet, 22 feet connect respectively
The capacitor for meeting 22pF is followed by 12V power supply.
The utility model has the beneficial effects that:
The utility model is a kind of high-precision signal transmission conversion device, and compared with prior art, the utility model design is closed
Reason, cost is relatively low and can be used for digital-to-analogue conversion, converts when can receive 16 digits that spread out of by RS232 of X86 computer factually
It is exported for the electric current of 4-20mA, improves signal transfer efficiency, laid the foundation for the research and development of electronic product, there is the valence promoted and applied
Value.
Detailed description of the invention
Fig. 1 is that the single-chip microcontroller of the utility model, 16 analog-digital chips, USB turn the circuit structure principle of TTL chip
Figure；
Fig. 2 is the usb circuit structure principle chart of the utility model；
Fig. 3 is the DC power supply socket circuit structure principle chart of the utility model.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing:
It is as shown in Figure 1, Figure 2 and Figure 3: including DC power supply socket, the voltage stabilizing chip of model L7805, USB interface, model
The single-chip microcontroller of STC15W204S, 16 analog-digital chips of model AD5420, model C H340G USB turn TTL chip, electric current
Output interface, three resistance, ten capacitors；The utility model rationally uses design of electronic circuits and connection technology, can
16 position digital signals to be quickly converted to the current signal for 4-20mA, conversion rate can achieve 100HZ or more.
DC power supply socket: entire circuit obtains power supply, and supply voltage is 12-24V power supply DC power supply.
USB interface: by X86 computer access interface, for the 16 position digital signal sources that the interface is circuit；
Single-chip microcontroller STC15W204S: measuring core at the data of entire circuit, the instruction obtained from CH340G, and completes data
Processing is sent to AD5420 analog-digital chip；
AD5420: after getting 16 position digital signals from STC15W204S, the current signal of 4-20mA is converted thereof into.
CH340G: usb signal is converted into TTL signal and is sent to single-chip microcontroller STC15W204S.
DC power supply socket access power supply electricity be 12V/1A DC power supply, DC power supply socket 1 foot connection positive pole+
12V, 2 feet connect power cathode GND, the capacitor of 1 foot+12V connection 10uF is followed by power cathode GND, 1 foot VCC of voltage stabilizing chip
Connection positive pole+12V, 2 foot GND connection power cathode GND, 3 foot OUT connection 10uF capacitor be followed by power cathode GND, 3
Foot output+5V power supply.
2 feet (VCC) of processor STC15W204S single-chip microcontroller connect 5V power supply, and 4 foot GND meet power cathode GND,
The capacitor that capacity is 1uF is set between the end VCC and the end GND of STC15W204S single-chip microcontroller.
The 16 foot VCC that USB turns TTL chip connect 5V power supply, 1 foot GND meets GND, 2 foot TXD meet 5 foot P3.0/ of single-chip microcontroller
RXD, 3 foot RXD meet capacitor, the 5 foot UD+ that 0.1uF is arranged between the 6 foot P3.1/TXD, 4 foot V3 and power cathode GND of single-chip microcontroller
The 2 foot D-, 7 foot XI and 8 foot XO that 3 foot D+, the 6 foot UD- of access USB interface connect USB interface are separately connected the capacitor of a 22pF
A 12M crystal oscillator is connected between to power cathode GND, 7 feet and 8 feet.
24 foot AVDD of 16 analog-digital chips are connected on 12V power supply, and 1 foot, 4 feet, 5 feet, 11 feet, 12 feet connect
It is connected on power cathode GND, the capacitor of a 0.1uF, 2 foot DVCC and 3 feet is provided between 2 foot DVCC and power cathode GND
The resistance of a 10K, 1 foot (P5.4) of 7 foot LATCH connection single-chip microcontrollers, 8 foot CLOCK connection single-chip microcontrollers are connected between FAULT
8 foot P3.3,9 feet (SDIN) connect 7 foot P3.2 of single-chip microcontroller, after 0.1% resistance of high-precision of 16 one 15K of foot RSET connection
It meets power cathode GND and is connected with 2 feet of current output interface SIP2,14 foot REFIN and 15 foot REFOUT are connected after being connected
Then 0.1uF capacitor meets power cathode GND, be connected after the resistance in 19 foot IOUT connection, 100 Europe with 1 foot of current output interface,
The capacitor that 21 foot CAP1,22 foot CAP2 are separately connected 22pF is followed by 12V power supply.
When DC interface or power supply after internal power unit export by capacitor filtering the burning voltage of 12V-24V,
L7805, which starts to work, exports 5V power supply STC15W204S, CH340 power supply.The power supply that AD5420 also obtains 12V-24V simultaneously starts
Work.If USB interface does not connect X86 computer or do not get data at this time, single-chip microcontroller STC15W204S will send and export
For the SPI data of 4mA to AD5420, the electric current exported at this time is 4mA；After USB interface accesses computer and gets data, the number
It is sent to single-chip microcontroller STC15W204S according to that can pass through CH340 and be converted to TTL signal, whether the monolithic opportunity identification data meet association
It assesses a bid for tender standard, is that can be converted to meet 16 SPI data of AD5420 standard and be sent to AD5420 in 1mS if standard signal,
AD5420 can also be converted into current signal output simultaneously；If the data that single-chip microcontroller receives do not meet consensus standard and will be rejected.
The advantages of basic principles and main features and the utility model of the utility model have been shown and described above.Current row
The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments
Only illustrate the principles of the present invention, on the premise of not departing from the spirit and scope of the utility model, the utility model is also
It will have various changes and improvements, these various changes and improvements fall within the scope of the claimed invention.The utility model
Claimed range is defined by the appending claims and its equivalent thereof.
Claims (1)
1. a kind of high-precision signal transmits conversion device, it is characterised in that: including DC power supply socket, model L7805 voltage stabilizing chip,
USB interface, the single-chip microcontroller of model STC15W204S, 16 analog-digital chips of model AD5420, model C H340G USB turn
TTL chip, current output interface, three resistance, ten capacitors；
The DC power supply that the DC power supply socket access power supply electricity is 12V/1A, 1 foot of DC power supply socket connect positive pole, 2
The capacitor that foot connection power cathode, 1 foot connect 10uF is followed by power cathode, and 1 foot connection positive pole, 2 feet of voltage stabilizing chip connect
Connect power cathode, the capacitor of 3 feet connection 10uF is followed by power cathode, 3 foot output+5V power supplys；
2 feet of the single-chip microcontroller connect 5V power supply, and 4 feet connect power cathode, and capacity is arranged between the end VCC and the end GND of single-chip microcontroller and is
The capacitor of 1uF；
16 feet that the USB turns TTL chip connect 5V power supply, 1 foot meets GND, 2 feet connect 5 feet of single-chip microcontroller, 3 feet connect the 6 of single-chip microcontroller
3 feet, 6 feet of capacitor, 5 feet access USB interface that 0.1uF is arranged between foot, 4 feet and power cathode connect 2 feet of USB interface, 7 feet
And 8 foot be separately connected between the capacitor to power cathode, 7 feet and 8 feet of a 22pF one 12M crystal oscillator of connection；
24 feet of 16 analog-digital chips are connected on 12V power supply, and 1 foot, 4 feet, 5 feet, 11 feet, 12 feet are all connected to
On power cathode, it is provided with the capacitor of a 0.1uF between 2 feet and power cathode, is connected to a 10K's between 2 feet and 3 feet
Resistance, 7 feet connect 1 foot of single-chip microcontroller, and 8 feet connect 8 feet of single-chip microcontroller, and 9 feet connect 7 feet of single-chip microcontroller, and 16 feet connect a 15K
Resistance be followed by power cathode and be connected with 2 feet of current output interface, connection 0.1uF capacitor is then after 14 feet and 15 feet are connected
Power cathode is connect, is connected after the resistance in 19 feet connection, 100 Europe with 1 foot of current output interface, 21 feet, 22 feet are separately connected 22pF
Capacitor be followed by 12V power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820876697.2U CN208188826U (en) | 2018-06-07 | 2018-06-07 | A kind of high-precision signal transmission conversion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820876697.2U CN208188826U (en) | 2018-06-07 | 2018-06-07 | A kind of high-precision signal transmission conversion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208188826U true CN208188826U (en) | 2018-12-04 |
Family
ID=64429053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820876697.2U Expired - Fee Related CN208188826U (en) | 2018-06-07 | 2018-06-07 | A kind of high-precision signal transmission conversion device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208188826U (en) |
-
2018
- 2018-06-07 CN CN201820876697.2U patent/CN208188826U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181204 |
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| CF01 | Termination of patent right due to non-payment of annual fee |