CN207926559U - Meter bus slave computer circuit device - Google Patents
Meter bus slave computer circuit device Download PDFInfo
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- CN207926559U CN207926559U CN201820177492.5U CN201820177492U CN207926559U CN 207926559 U CN207926559 U CN 207926559U CN 201820177492 U CN201820177492 U CN 201820177492U CN 207926559 U CN207926559 U CN 207926559U
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- circuit
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- power supply
- slave computer
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Abstract
The utility model is related to a kind of meter bus slave computer circuit device, including filter rectifier, data receiver circuit, data transmission circuit and power supply circuit, filter rectifier is used to carry out EMS filtering with regard to rectification to bus；Data receiver circuit is used to carry out data acquisition by partial pressure mode；The data that data transmission circuit is used to complete electric current loop are sent；Power supply circuit connects the output end of data transmission circuit, power supply circuit one end ground connection, and another termination forward voltage realizes burning voltage output by diode and capacitance.The utility model can provide stable voltage, improve anti-interference ability, reduce maintenance difficulties.
Description
Technical field
The utility model is related to field of circuit technology, more particularly to a kind of meter bus slave computer circuit device.
Background technology
Two lines bus is one kind relative to four-wire system（Liang Gen supply lines, two communication lines）, by supply lines and signal
Line is combined into one, and realizes signal and power supply shares the technology of a bus.Two lines bus saves construction and cable cost, to existing
Field construction and later maintenance bring great convenience.In fire-fighting, instrument, sensor, the fields such as Industry Control are widely applied.
Typical double bus technology has M-BUS, fire-fighting bus etc..Current bus slave computer circuit in the prevalence of data waveform be distorted compared with
Greatly, the weak defect of anti-interference ability.
Utility model content
The purpose of this utility model is that improve the above-mentioned deficiency in the presence of the prior art, provide a kind of meter bus from
Machine circuit device, to reduce wave distortion in data transmission procedure and improve anti-interference ability.
In order to realize that above-mentioned purpose of utility model, the utility model embodiment provide following technical scheme：
A kind of meter bus slave computer circuit device, including filter rectifier, data receiver circuit, data transmission circuit and
Power supply circuit, wherein
One end connection electric energy end of filter rectifier, filter rectifier are used to carry out EMS filtering with regard to rectification to bus；
The other end of one end connection filter rectifier of data receiver circuit, data receiver circuit are used to pass through partial pressure side
Formula carries out data acquisition；
The other end of one end connection data receiver circuit of data transmission circuit, data transmission circuit is for completing electric current loop
Data send；
Power supply circuit connects the other end of data transmission circuit, and power supply circuit is realized by diode and storage capacitor to be stablized
Voltage output.
Further, in above-mentioned meter bus slave computer circuit device, the filter rectifier includes the TVS pipe of 50V, two
A filter capacitor and rectifier bridge, the both ends connection electric energy end of TVS pipe, rectifier bridge in parallel with TVS pipe after two filter capacitor series connection
Negative pole end be connected between two filter capacitors, the other end of two filter capacitors is connected to the exchange end of rectifier bridge.
The TVS of 50V can filter out the interference voltage for exceeding 50V voltages in bus, protect the device in bus, two filtering
Capacitance can filter out relatively narrow spike interference, improve the anti-interference ability of system.It is electrodeless that rectifier bridge can be such that bus has
Property the characteristics of, tie-in line can be regardless of positive and negative anodes, which reduces the wiring error probability of product during the installation process, also side
The later stage debugging and maintenance.
Further, in above-mentioned meter bus slave computer circuit device, the data receiver circuit include data receiver port,
Concatenated first divider resistance and the second divider resistance, the positive terminal of the other end connection rectifier bridge of the first divider resistance, second
The negative pole end of the other end connection rectifier bridge of divider resistance, data receiver port are connected between two divider resistances.Pass through this
The shunting of sample can be very good the data waveform received.
Further, in above-mentioned meter bus slave computer circuit device, the data transmission circuit includes triode, load electricity
The collector of resistance and data sending port, triode connects one end that the first divider resistance is used to connect rectifier bridge, triode
Emitter connects load resistance, and the base stage of triode connects data sending terminal mouth, the other end ground connection of load resistance.
Further, in above-mentioned meter bus slave computer circuit device, the power supply circuit includes diode and storage capacitor,
The negative pole end of the collector of the positive terminal connection triode of diode, diode connects forward voltage, and one end of storage capacitor connects
Connect the negative pole end of diode, other end ground connection.Electrically segmentation and energy storage are carried out by diode and storage capacitor, it is steady to obtain
Fixed power supply, realizes data well in this way and power supply shares the mode bus of 2 power cords.
Compared with prior art, the beneficial effects of the utility model：
The anti-interference ability of raising system.
The wiring error probability of product during the installation process is reduced, the debugging and maintenance in later stage are also convenient for.
Reduce data waveform distortion level.
It provides and stabilizes the output voltage for load.
Description of the drawings
It, below will be to required use in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore does not answer
It is counted as the restriction to range, for those of ordinary skill in the art, without creative efforts, also
Other relevant attached drawings can be obtained according to these attached drawings.
Fig. 1 is the electrical schematic diagram for the meter bus slave computer circuit device that the utility model embodiment provides.
Fig. 2 is that data waveform figure is received in the utility model embodiment.
Fig. 3 is the oscillogram in bus in the utility model embodiment.
Specific implementation mode
Below in conjunction with attached drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out clear
Chu is fully described by, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole realities
Apply example.The component of the utility model embodiment being usually described and illustrated herein in the accompanying drawings can be come with a variety of different configurations
Arrangement and design.Therefore, the detailed description of the embodiments of the present invention to providing in the accompanying drawings is not intended to limit below
Claimed the scope of the utility model, but it is merely representative of the selected embodiment of the utility model.Based on the utility model
Embodiment, the every other embodiment that those skilled in the art are obtained without making creative work, all
Belong to the range of the utility model protection.
It should be noted that：Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent attached drawing in a attached drawing.Meanwhile it is new in this practicality
In the description of type, term " first ", " second " etc. are only used for distinguishing description, are not understood to indicate or imply relatively important
Property.
Referring to Fig. 1, a kind of meter bus slave computer circuit device is provided in the present embodiment, the meter bus slave computer circuit
Device includes filter rectifier 10, data receiver circuit 20, data transmission circuit 30 and power supply circuit 40, wherein
One end connection electric energy end of filter rectifier 10, filter rectifier 10 are used to carry out EMS filtering just to bus
Rectification；
The other end of one end connection filter rectifier 10 of data receiver circuit 20, data receiver circuit 20 is for passing through
Partial pressure mode carries out data acquisition；
The other end of one end connection data receiver circuit 20 of data transmission circuit 30, data transmission circuit 30 is for completing
The data of electric current loop are sent；
Power supply circuit 40 connects the other end of data transmission circuit 30, and power supply circuit 40 is real by diode and storage capacitor
Existing burning voltage output.
Referring to Fig. 1, specifically, in the present embodiment, the filter rectifier 10 includes the TVS pipe D5 of 50V, two filters
Wave capacitance C4, C6 and rectifier bridge D4, TVS pipe use SMBJ50CA, rectifier bridge that MB6S, the both ends of TVS pipe is used to connect electric energy end,
In parallel with TVS pipe after C4, C6 series connection, the negative pole end of rectifier bridge is connected between C4, C6, and the other end of C4 is connected to rectifier bridge
The other end at one exchange end, C6 is connected to another exchange end of rectifier bridge.D5 is the TVS pipe that voltage is 50V, can be filtered out
The interference voltage for exceeding 50V voltages in bus protects the device in bus, C4, C6 that can filter out relatively narrow spike interference,
The anti-interference ability of raising system.D4 is rectifier bridge, bus can be made to have the characteristics that non-polar, tie-in line can part it is positive and negative
Pole, which reduces the wiring error probability of product during the installation process, have been also convenient for the debugging and maintenance in later stage.
Referring to Fig. 1, in the present embodiment, the data receiver circuit 20 includes data receiver port SLAVE_RX, first
Divider resistance R34 and the second divider resistance R36, resistance R34 are connected with R36, and the other end of the first divider resistance R34 connects rectification
The positive terminal of bridge, and forward voltage is connected, the negative pole end of the other end connection rectifier bridge of the second divider resistance R36, and be grounded, number
It is connected between resistance R34 and R36 according to receiving port SLAVE_RX.Herein, data acquisition is carried out by the partial pressure of R34 and R36,
Obtained data waveform is as shown in Fig. 2, the shunting that can be seen that in this way from the data waveform can be very good to be received
Data waveform.
Referring to Fig. 1, in the present embodiment, the data transmission circuit 30 includes triode Q11, load resistance R43 sum numbers
According to sending port SLAVE_TX, the collector of triode Q11 connects one end that the first divider resistance R34 is used to connect rectifier bridge,
The emitter of triode Q11 connects load resistance R43, and the base stage of triode Q11 connects data sending terminal mouth SLAVE_TX, load
The other end of resistance R43 is grounded.When host issues the periodic 8V of 0.2ms compared with low level, the transmission of slave data passes through
The break-make of SLAVE_TX port controlling triodes Q11, in controlling bus by electric current, allow host can be by detecting electricity
The mode of stream obtains data.But since the low level time of periodical 0.2ms is too short, so being sent in Host Detection to slave
Just need the 8V level of this 0.2ms temporarily to reach the 8V level of 0.5ms when the one or two binary data of data, so
It can make slave that the data of one byte are sent with the baud rate of 38400bit complete.Oscillogram in bus is as shown in Figure 3.
Referring to Fig. 1, in the present embodiment, the power supply circuit 40 includes diode D3 and storage capacitor C5, diode D3
Positive terminal connection triode Q11 collector, the negative pole end of diode D3 connects 24V forward voltages, the one of storage capacitor C5
The negative pole end of end connection diode D3, other end ground connection.When filter rectifier 10, data receiver circuit 20, data send electricity
Road 30 is after the sending and receiving and be put into bus of data, and the voltage of bus is unstable, here by the diode on slave
D3, storage capacitor C5 carry out electrically segmentation and energy storage, and the power supply to be stablized realizes that data and power supply share 2 electricity
The mode bus of source line.
Above description is only a specific implementation of the present invention, but the scope of protection of the utility model is not limited to
In this, any one skilled in the art within the technical scope disclosed by the utility model, can readily occur in variation
Or replace, it should be covered within the scope of the utility model.
Claims (5)
1. meter bus slave computer circuit device, which is characterized in that sent including filter rectifier, data receiver circuit, data
Circuit and power supply circuit, wherein
One end connection electric energy end of filter rectifier, filter rectifier are used to carry out EMS filtering with regard to rectification to bus；
Data receiver circuit one end connection filter rectifier the other end, data receiver circuit be used for by way of partial pressure into
Row data acquire；
The other end of one end connection data receiver circuit of data transmission circuit, data transmission circuit are used to complete the number of electric current loop
According to transmission；
Power supply circuit connects the other end of data transmission circuit, and power supply circuit realizes burning voltage by diode and storage capacitor
Output.
2. meter bus slave computer circuit device according to claim 1, which is characterized in that the filter rectifier includes
The TVS pipe of 50V, two filter capacitors and rectifier bridge, the both ends connection electric energy end of TVS pipe, after two filter capacitors series connection with TVS
Pipe is in parallel, and the negative pole end of rectifier bridge is connected between two filter capacitors, and the other ends of two filter capacitors is connected to whole
Flow the exchange end of bridge.
3. meter bus slave computer circuit device according to claim 2, which is characterized in that the data receiver circuit includes
The other end of data receiver port, concatenated first divider resistance and the second divider resistance, the first divider resistance connects rectifier bridge
Positive terminal, the second divider resistance the other end connection rectifier bridge negative pole end, data receiver port be connected to two partial pressure electricity
Between resistance.
4. meter bus slave computer circuit device according to claim 3, which is characterized in that the data transmission circuit includes
The collector of triode, load resistance and data sending port, triode connects the first divider resistance for connecting rectifier bridge
The emitter of one end, triode connects load resistance, and the base stage of triode connects data sending terminal mouth, the other end of load resistance
Ground connection.
5. meter bus slave computer circuit device according to claim 4, which is characterized in that the power supply circuit includes described
Diode and the storage capacitor, the collector of the positive terminal connection triode of diode, the negative pole end connection of diode are positive
Voltage, the negative pole end of one end connection diode of storage capacitor, other end ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820177492.5U CN207926559U (en) | 2018-02-01 | 2018-02-01 | Meter bus slave computer circuit device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820177492.5U CN207926559U (en) | 2018-02-01 | 2018-02-01 | Meter bus slave computer circuit device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207926559U true CN207926559U (en) | 2018-09-28 |
Family
ID=63602564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820177492.5U Expired - Fee Related CN207926559U (en) | 2018-02-01 | 2018-02-01 | Meter bus slave computer circuit device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207926559U (en) |
-
2018
- 2018-02-01 CN CN201820177492.5U patent/CN207926559U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180928 Termination date: 20210201 |