CN205810101U - A kind of M bus based on discrete component is from terminal circuit - Google Patents
A kind of M bus based on discrete component is from terminal circuit Download PDFInfo
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- CN205810101U CN205810101U CN201620740125.2U CN201620740125U CN205810101U CN 205810101 U CN205810101 U CN 205810101U CN 201620740125 U CN201620740125 U CN 201620740125U CN 205810101 U CN205810101 U CN 205810101U
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Abstract
This utility model relates to the system of main frame MBUS data acquisition; particularly relate to a kind of M bus based on discrete component from terminal circuit; including the input protection circuit being sequentially connected with, rectification circuit, constant voltage circuit, signal receiving circuit and signal transmission circuit; also include voltage detecting circuit; described signal receiving end connects the receiving terminal of single-chip microcomputer; described signal transmitting terminal connects the transmitting terminal of single-chip microcomputer, and the input of described voltage detecting circuit connects the outfan of constant voltage circuit.This utility model is based on discrete component, and circuit design is simple, and low cost is low in energy consumption；By input protection circuit, rectification circuit, constant voltage circuit and voltage detecting circuit, performance is more stable, uses safer.
Description
Technical field
This utility model relates to the system of main frame MBUS data acquisition, particularly relates to a kind of based on discrete component
M-bus is from terminal circuit.
Background technology
Meter bus (Meter Bus, M-bus) is a kind of New Bus structure, M-bus be mainly characterized by with two electrodeless
Property transmission line power and transmitting serial data simultaneously, and each substation (confirming with different ID) is connected in parallel in MBUS bus.
Utilize MBUS can be greatly simplified residential quarters, the wiring of the energy consumption intellectualized management systems such as office space and connection, and there is knot
The feature that structure is simple, cheap, reliability is high.
At present, existing M-bus transmitting-receiving control circuit is the most more complicated, uses integrated chip, and cost is high, and power consumption is big.Its
Secondary, existing M-bus transmitting-receiving control circuit does not has constant current, constant voltage circuit, input instability, uses dangerous.It addition, it is existing
M-bus transmitting-receiving control circuit does not has voltage detecting circuit, uses dangerous.
Summary of the invention
In order to solve the problems referred to above, this utility model provides a kind of M-bus based on discrete component from terminal circuit.
Technical solutions of the utility model are: a kind of M-bus based on discrete component is from terminal circuit, including be sequentially connected with
Input protection circuit, rectification circuit, constant voltage circuit, signal receiving circuit and signal transmission circuit, also include voltage detecting electricity
Road, described signal receiving end connects the receiving terminal of single-chip microcomputer, and described signal transmitting terminal connects the transmitting terminal of single-chip microcomputer, described voltage
The input of testing circuit connects the outfan of constant voltage circuit.
Further, described signal receiving circuit includes electric capacity C1, resistance R3, R7, diode V4, audion V5, three poles
The emitter stage of pipe V5 connects constant voltage circuit outfan, and the colelctor electrode of audion V5 connects the receiving terminal of single-chip microcomputer, resistance R7, resistance
The other end ground connection of R7, the emitter stage of the two ends of diode V4 connecting triode V5 respectively and base stage, resistance R3 and electric capacity C1 goes here and there
Being connected on the base stage of audion V5, the other end of electric capacity C1 connects the outfan of rectification circuit.
Further, described signal transmission circuit includes resistance R6, R10, R11, R12, electric capacity C4, audion V8, described
The base stage of audion V8 connects the transmitting terminal of single-chip microcomputer by resistance R11, and the emitter stage series resistor R10 of audion V8 is followed by
Ground, the collector series connection resistance R6 of audion V8 is followed by the outfan of rectification circuit, and resistance R12 concatenates with electric capacity C4, resistance R12
The other end connect the emitter stage of other end connecting triode V8 of resistance R6, electric capacity C4, the two ends of resistance R6, R12 are the most mutually
Connect.
Further, described voltage detecting circuit includes resistance R4, R8, and described resistance R4, R8 concatenate, another of resistance R4
End connects constant voltage circuit outfan, and the other end of resistance R8 connects constant-current circuit input, and the intermediate node of resistance R4, R8 is inspection
Survey end to be connected with single-chip microcomputer.
Further, described input protection circuit includes current input terminal, resistance R5, R9 and bi-directional voltage stabilizing diode
V9, described resistance R5, R9 be serially connected in current input terminal respectively, the two ends of described bi-directional voltage stabilizing diode connect respectively resistance R5,
The outfan of R9.
Further, described rectification circuit is bridge rectifier.
Further, described constant-current circuit includes resistance R1, R2, audion V1, V2, Zener diode V6 and diode
The base stage of the two ends of C2, described resistance R1 connecting triode V1 respectively and colelctor electrode, the colelctor electrode of audion V1 connects rectified current
The outfan on road, the base stage of the emitter stage connecting triode V2 of audion V1, the colelctor electrode connecting triode V1's of audion V2
Base stage, the base stage of the two ends of resistance R2 connecting triode V2 respectively and emitter stage, the negative pole connecting triode of Zener diode V6
The emitter stage of V2, the plus earth of Zener diode V6, electric capacity C2 and Zener diode V6 also connects.
Further, described constant voltage circuit includes the GND end ground connection of voltage stabilizing chip D1, voltage stabilizing chip D1, and Vin terminates constant current
The outfan of circuit, Vout termination voltage testing circuit input.
The beneficial effects of the utility model are: M-bus is from terminal circuit based on discrete component, and circuit design is simple, cost
Low, low in energy consumption；By input protection circuit, rectification circuit, constant voltage circuit and voltage detecting circuit, performance is more stable, makes
With safer.
Accompanying drawing explanation
With detailed description of the invention, this utility model is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is this utility model circuit connection diagram.
Detailed description of the invention
Below in conjunction with accompanying drawing, the technical solution of the utility model is further described, but this utility model does not limit
In these embodiments.
In conjunction with accompanying drawing 1, a kind of M-bus based on discrete component is from terminal circuit, including the input protection electricity being sequentially connected with
Road, rectification circuit, constant voltage circuit, signal receiving circuit and signal transmission circuit, also include voltage detecting circuit, described signal
Receiving terminal connects the receiving terminal of single-chip microcomputer, and described signal transmitting terminal connects the transmitting terminal of single-chip microcomputer, described voltage detecting circuit
Input connects the outfan of constant voltage circuit.
Signal receiving circuit includes electric capacity C1, resistance R3, R7, diode V4, audion V5, and the emitter stage of audion V5 is even
Connecing constant voltage circuit outfan, the colelctor electrode of audion V5 connects the receiving terminal of single-chip microcomputer, resistance R7, another termination of resistance R7
Ground, the emitter stage of the two ends of diode V4 connecting triode V5 respectively and base stage, resistance R3 and electric capacity C1 is serially connected in audion V5
Base stage, the other end of electric capacity C1 connects the outfan of rectification circuit.
Signal transmission circuit includes resistance R6, R10, R11, R12, electric capacity C4, audion V8, the base stage of described audion V8
The transmitting terminal of single-chip microcomputer, ground connection after the emitter stage series resistor R10 of audion V8, the collection of audion V8 is connected by resistance R11
Electrode array connecting resistance R6 is followed by the outfan of rectification circuit, and resistance R12 concatenates with electric capacity C4, and the other end of resistance R12 connects electricity
The emitter stage of the other end connecting triode V8 of resistance R6, electric capacity C4, the two ends of resistance R6, R12 mutual connection respectively.
Voltage detecting circuit includes resistance R4, R8, and described resistance R4, R8 concatenate, and the other end of resistance R4 connects constant voltage electricity
Road outfan, the other end of resistance R8 connects constant-current circuit input, and the intermediate node of resistance R4, R8 is test side and single-chip microcomputer
Connect.The output voltage of voltage detecting circuit detection constant voltage circuit, it is judged that whether it exception occurs.
Input protection circuit includes current input terminal, resistance R5, R9 and bi-directional voltage stabilizing diode V9, described resistance R5,
R9 is serially connected in current input terminal respectively, and the two ends of described bi-directional voltage stabilizing diode connect the outfan of resistance R5, R9 respectively.
Rectification circuit is bridge rectifier.
Constant-current circuit includes resistance R1, R2, audion V1, V2, Zener diode V6 and diode C2, described resistance R1
The base stage of two ends respectively connecting triode V1 and colelctor electrode, the colelctor electrode of audion V1 connects the outfan of rectification circuit, three
The base stage of the emitter stage connecting triode V2 of pole pipe V1, the base stage of the colelctor electrode connecting triode V1 of audion V2, resistance R2's
The base stage of two ends connecting triode V2 respectively and emitter stage, the emitter stage of the negative pole connecting triode V2 of Zener diode V6, surely
The plus earth of pressure diode V6, electric capacity C2 and Zener diode V6 also connects.Its constant output current is made by constant-current circuit.
Constant voltage circuit includes the GND end ground connection of voltage stabilizing chip D1, voltage stabilizing chip D1, and Vin terminates the outfan of constant-current circuit,
Vout termination voltage testing circuit input.It is made to export electric current pressure by constant voltage circuit constant
Maximum input voltage 42V is carried out limiting protection by input protection circuit；Rectification circuit makes M-bus signal regardless of just
Negative pole；Constant-current circuit and constant voltage circuit provide 0.6mA/3.8V power supply after processing；The voltage signal that main website launches connects through signal
Receive circuit to export to single-chip microcomputer process；The current signal that slave station is responded is transferred to signal transmission circuit by single-chip microcomputer and produces.
Specific embodiment described herein is only to this utility model spirit explanation for example.This utility model institute
Belong to those skilled in the art described specific embodiment to make various amendment or supplement or use similar
Mode substitute, but without departing from spirit of the present utility model or surmount scope defined in appended claims.
Claims (7)
1. a M-bus based on discrete component is from terminal circuit, it is characterised in that: include the input protection electricity being sequentially connected with
Road, rectification circuit, constant voltage circuit, signal receiving circuit and signal transmission circuit, also include voltage detecting circuit, described signal
Receiving terminal connects the receiving terminal of single-chip microcomputer, and described signal transmitting terminal connects the transmitting terminal of single-chip microcomputer, described voltage detecting circuit
Input connects the outfan of constant voltage circuit.
M-bus based on discrete component the most according to claim 1 is from terminal circuit, it is characterised in that: described signal connects
Receiving circuit and include electric capacity C1, resistance R3, R7, diode V4, audion V5, the emitter stage of audion V5 connects constant voltage circuit output
End, the colelctor electrode of audion V5 connects the receiving terminal of single-chip microcomputer, resistance R7, the other end ground connection of resistance R7, the two of diode V4
The emitter stage of end connecting triode V5 respectively and base stage, resistance R3 and electric capacity C1 is serially connected in the base stage of audion V5, electric capacity C1's
The other end connects the outfan of rectification circuit.
M-bus based on discrete component the most according to claim 1 is from terminal circuit, it is characterised in that: described signal is sent out
Radio road includes resistance R6, R10, R11, R12, electric capacity C4, audion V8, and the base stage of described audion V8 is by resistance R11 even
Connect the transmitting terminal of single-chip microcomputer, ground connection after the emitter stage series resistor R10 of audion V8, the collector series connection resistance R6 of audion V8
Being followed by the outfan of rectification circuit, resistance R12 concatenates with electric capacity C4, and the other end of resistance R12 connects resistance R6, and electric capacity C4's is another
The emitter stage of one end connecting triode V8, the two ends of resistance R6, R12 mutual connection respectively.
M-bus based on discrete component the most according to claim 1 is from terminal circuit, it is characterised in that: described voltage is examined
Slowdown monitoring circuit includes resistance R4, R8, and described resistance R4, R8 concatenate, and the other end of resistance R4 connects constant voltage circuit outfan, resistance R8
The other end connect constant-current circuit input, the intermediate node of resistance R4, R8 is that test side is connected with single-chip microcomputer.
M-bus based on discrete component the most according to claim 1 is from terminal circuit, it is characterised in that: described input is protected
Protection circuit includes current input terminal, resistance R5, R9 and bi-directional voltage stabilizing diode V9, and described resistance R5, R9 are serially connected in electricity respectively
Stream input, the two ends of described bi-directional voltage stabilizing diode connect the outfan of resistance R5, R9 respectively.
M-bus based on discrete component the most according to claim 1 is from terminal circuit, it is characterised in that: described rectified current
Road is bridge rectifier.
M-bus based on discrete component the most according to claim 1 is from terminal circuit, it is characterised in that: described constant voltage electricity
Road includes the GND end ground connection of voltage stabilizing chip D1, voltage stabilizing chip D1, and the outfan of Vin termination constant-current circuit, Vout termination voltage is examined
Slowdown monitoring circuit input.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620740125.2U CN205810101U (en) | 2016-07-12 | 2016-07-12 | A kind of M bus based on discrete component is from terminal circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620740125.2U CN205810101U (en) | 2016-07-12 | 2016-07-12 | A kind of M bus based on discrete component is from terminal circuit |
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| Publication Number | Publication Date |
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| CN205810101U true CN205810101U (en) | 2016-12-14 |
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| CN201620740125.2U Active CN205810101U (en) | 2016-07-12 | 2016-07-12 | A kind of M bus based on discrete component is from terminal circuit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107370518A (en) * | 2017-07-24 | 2017-11-21 | 深圳安德勒电气科技有限公司 | A kind of two-wire system constant-current source carrier communication bidirectional transmit-receive circuit |
| CN108989910A (en) * | 2018-09-07 | 2018-12-11 | 瑞纳智能设备股份有限公司 | A kind of low-power consumption bus takes electric MBUS communication interface circuit |
| RU2742628C2 (en) * | 2018-08-24 | 2021-02-09 | Николай Николаевич Милюшин | Discrete input of microprocessor control unit |
-
2016
- 2016-07-12 CN CN201620740125.2U patent/CN205810101U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107370518A (en) * | 2017-07-24 | 2017-11-21 | 深圳安德勒电气科技有限公司 | A kind of two-wire system constant-current source carrier communication bidirectional transmit-receive circuit |
| RU2742628C2 (en) * | 2018-08-24 | 2021-02-09 | Николай Николаевич Милюшин | Discrete input of microprocessor control unit |
| CN108989910A (en) * | 2018-09-07 | 2018-12-11 | 瑞纳智能设备股份有限公司 | A kind of low-power consumption bus takes electric MBUS communication interface circuit |
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