CN206249302U - It is applied to the host circuit device of power bus - Google Patents
It is applied to the host circuit device of power bus Download PDFInfo
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- CN206249302U CN206249302U CN201621283837.2U CN201621283837U CN206249302U CN 206249302 U CN206249302 U CN 206249302U CN 201621283837 U CN201621283837 U CN 201621283837U CN 206249302 U CN206249302 U CN 206249302U
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Abstract
Implementation method of the present utility model is related to a kind of host circuit device for being applied to power bus, including P MOSFET controls circuit, signal read circuits and bus signal control circuit.P MOSFET control circuits are used to realize the control that switches on and off of the power supply to the power of power bus, including P mosfet transistors and drive circuit using P mosfet transistors.Signal read circuits are used to read the current signal and/or voltage signal of slave passback on power bus, and carry out constant pressure treatment, including linear voltage-stabilizing circuit and its peripheral circuit to the current signal and/or voltage signal that read using linear voltage-stabilizing circuit.Bus signal control circuit is used for the transmission on power bus using positive-negative-positive large power triode driving data signal, including large power triode and its peripheral circuit.By the use of P mosfet transistors and large power triode, expand can power bus host computer side power range of application.
Description
Technical field
Implementation method of the present utility model be related to can power bus technical field, more particularly to one kind is applied to power
The host circuit device of bus.
Background technology
Fieldbus is more and more appeared in automation and the application of sensor, for data communication, such as is sent
Control signal.Can power bus supply line and bus can be passed through the technology that common circuit is realized as a kind of, so as to
Enough simplify site operation, reduce product cost, and increase system reliability.By modulating control signal on service cable, can
To substitute control cable and service cable that tradition is separate.Can power bus fire fighting monitoring, intelligent building, instrument and meter neck
The aspects such as domain, sensor network have many applications.
The bus system that can power at present generally uses two-wire system bus, more using the communication pattern of master-slave mode.Fig. 1 is existing
A kind of master-slave mode in technology can power the schematic diagram of bus communication system.It is common can power bus RS485 and M-Bus adopt
It is master-slave mode pattern.
Generally, in host computer side, when data are sent, user data can be being carried out using modulation technique in power bus
Modulation, modulated data load on to slave transmit electric signal in, then can be transmitted on power bus, this can
Completed with the communication chip by host computer side.From pusher side, while can power bus be connected to load, for supplying to load
Electricity, device is by modulated signal from the upper taking-up that can power then demodulated after filtering for another side, so that it may obtain former signal of communication, and
The user equipment from pusher side is sent to, to realize information transmission.
The working condition of M-Bus buses is divided into two kinds of data transmission state and vacant working mode.Data transmission state is again
Be divided into main frame to slave data transfer and slave to main frame data transfer.Power supply should be provided during host work to bus.It is main
Machine to the information of slave is transmitted by way of " main frame change bus voltage, from the machine testing change ".Slave to main frame letter
Breath is transmitted by way of " electric current, the Host Detection changes of slave change drain bus ".During bus free, host and slave processors are protected
Hold mark condition.In Chinese patent, the transmission principle that CN 202615602U are usually referred to M-BUS buses is disclosed.By drawing
This is incorporated into the patent is disclosed.
But, existing bussing technique of powering is substantially all the low-power applications for being less than such as 2A in host computer side, cannot
Realize bigger power demand.
Utility model content
Therefore the utility model implementation method the first purpose be propose one kind can expand can power bus in main frame
The scheme of the power range of application of side.
According to of the present utility model embodiment there is provided a kind of host circuit device for being applied to power bus, including
P-MOSFET controls circuit, signal read circuits and bus signal control circuit.P-MOSFET control circuits can be used for utilizing
P-MOSFET transistors realize the control that switches on and off of the power supply to the power of power bus, including the P-MOSFET brilliant
The drive circuit of body pipe and the P-MOSFET transistors.Signal read circuits can be used for reading slave on the power bus
The current signal and/or voltage signal of passback, and the current signal and/or voltage that read are believed using linear voltage-stabilizing circuit
Number carry out constant pressure treatment, including the linear voltage-stabilizing circuit and the peripheral circuit for the linear voltage-stabilizing circuit.Bus signals
Control circuit can be used for using transmission of the positive-negative-positive large power triode driving data signal on power bus, including described
Positive-negative-positive large power triode and the peripheral circuit for the positive-negative-positive large power triode.
In one embodiment, the drive circuit of P-MOSFET transistors may be constructed such that by the signal of low voltage
To drive the P-MOSFET transistors of high voltage.
In one embodiment, the drive circuit of P-MOSFET transistors may further include：Antihunt circuit, for making
The drive signal of the P-MOSFET transistors must be driven steady.
In one embodiment, the peripheral circuit for the linear voltage-stabilizing circuit can include：For linear with described
The constant voltage circuit that mu balanced circuit is combined and constituted, the constant voltage circuit is used for current signal and/or voltage letter to slave passback
Number carry out constant pressure treatment.
In one embodiment, the constant voltage circuit can be connected to the bus signal control circuit for described
The peripheral circuit of positive-negative-positive large power triode, the voltage for providing stabilization for the data-signal on power bus to be loaded into
Source.
In one embodiment, the peripheral circuit for the linear voltage-stabilizing circuit can include：Signaling conversion circuit, uses
Signal conversion is carried out in the current signal and/or voltage signal returned to slave, can be located to change to main-machine communication chip
The scope of reason.
According to the embodiment of the present invention, P-MOSFET transistors can for IRF9540, IRF4905, IRF9540 × 2,
The transistor of IRF4905 × 2 type.
According to the embodiment of the present invention, linear voltage-stabilizing circuit can be LM317 regulator blocks.
According to the embodiment of the present invention, positive-negative-positive large power triode can be MJD127 triodes or the poles of TIP127 tri-
Pipe.
According to the embodiment of the present invention, positive-negative-positive large power triode can be PNP Darlington triodes.
According to implementation method of the present utility model, by the use of P-MOSFET transistors and large power triode, can
Expand low pressure can power bus power range of application scheme.For example, by the P-MOSET for selecting to support to be up to 20A electric currents
Transistor, the utility model can exceed the bus driver structure of 20A in host computer side offer.
What general introduction above was merely exemplary, and be not intended to be limited by any way.By reference to accompanying drawing and
In addition to following detailed description, the scheme, embodiment and feature except examples described above, scheme in addition, implementation
Example and feature will become apparent.
Brief description of the drawings
By the detailed description for being given below in conjunction with the accompanying drawings and appended claims, the preceding feature of the disclosure and its
Its feature will become more fully apparent, in the accompanying drawings：
Fig. 1 is that a kind of master-slave mode of the prior art can power the schematic diagram of bus communication system；And
Fig. 2 show according to another embodiment of the present utility model be applied to can power bus host circuit dress
Put.
Specific embodiment
Some embodiments of present disclosure are reference will now be made in detail to now, and its example is shown in the drawings.It should be noted that attached
Figure describes the embodiment of present disclosure for illustration purposes only.Accompanying drawing is not construed as the limit to the utility model scope
System.Those skilled in the art will be easy to recognize from the following description the alternative of structure described herein and method
Can do not depart from embodiment described herein principle in the case of and used.
Data-signal to be sent can adjusted using main-machine communication chip often in host computer side in power bus, currently
And be loaded into can be on power bus, and from can obtain the feedback signal of slave on power bus, and for control signal
Send and receive sequential.
Term " large power triode " used herein is term commonly used in the art, generally refers to dissipation work
Triode of the rate more than 1w.
With reference to Fig. 2, it illustrates according to a kind of implementation method of the present utility model be applied to can power bus main frame
Circuit arrangement and main-machine communication chip 4.As shown in Fig. 2 the host circuit device includes the p-type metal-oxide of Part I
The signal read circuits 2 of semiconductor field effect transistor (P-MOSFET) control circuit 1, Part II and the bus of Part III
Signal control circuit 3.
P-MOSFET control circuits 1 can be used to realize that high-power P-MOSFET is quickly turned off and on, such that it is able to subtract
Few thermal losses.Conventional bus control is often using the structure of electric resistance partial pressure, it is impossible to realize that MOSFET is quickly turned off and on.Profit
Circuit is controlled with P-MOSFET, this circuit can provide simple, inexpensive, efficient control program.
Signal read circuits 2 can be used to realize reading the current and voltage signals of slave passback on power bus.Signal-obtaining
Circuit 2 includes that linear voltage-stabilizing circuit IC1 and its peripheral circuit are constituted, it is possible to achieve constant voltage, current limliting, voltage signal conversion,
And/or current signal conversion.In addition, so realize, it is with low cost and simple for structure.
Bus signal control circuit 3 can be used to realize the transmission of the driving data signal on power bus.Conventional art is past
Processed toward using modes such as resistance NPN triodes, due to directly driving, therefore driving power is small.Conventional art is when in face of big
When power drive often cannot effective drive signal, simple increase driving force can only cause transmission signal to distort,
Make slave None- identified.In fig. 2, using positive-negative-positive large power triode, and the constant voltage signal of signal read circuits 2 is coordinated to do
Driving is followed, and introduces negative-feedback, the signal of such driving will be more steady, believe to transmission in the case of high-power applications
Number provide stabilization driving power.
As shown in Fig. 2 P-MOSFET control circuits 1 are connected across dc source DCINOutput end and main-machine communication chip 4
Between bus marco pin CONH, including P-MOSFET transistors Q1 and its driving stage circuit.The source of P-MOSFET transistors Q1
Pole is connected to dc source DCINOutput end, the grid of P-MOSFET transistors Q1 is connected to the auxiliary of P-MOSFET control circuits 1
Circuit is helped, by the drain electrode of P-MOSFET transistors Q1 to bus-powered.In the accompanying drawings, power bus be expressed as by circuit L1 and
The two-wire bus that circuit L2 is constituted.As shown in Fig. 2 driving stage electricity routing resistance R1, R2, R3 and R4, triode T1, T2 and
T3, and electric capacity C1 is constituted, three terminals of the driving stage circuit be respectively connecting to the source electrode of P-MOSFET transistors Q1,
The bus marco pin CONH of grid and main-machine communication chip 4.R4, R2, T1 constitute signaling conversion circuit, by low-voltage signal
Be converted to the high-voltage signal that can drive P-MOSFET, T2, T3 constitute power amplifier, for realize drive MOSFET required for
High power, R1, R3, C1 composition damper, with cause drive signal it is more steady.
It should be appreciated that an implementation method of the present utility model is used as power bus and is holding using P-MOSFET transistors
Carry the switching switch between power and data-signal, described foregoing driving stage examples of circuits and nonrestrictive, this area
Skill personnel can build other feasible driving stage circuits for P-MOSFET transistors according to demand.Though it is also understood that
Be illustrate only in right accompanying drawing using a P-MOSFET transistor, but inventor has had contemplated that and can use two or more
The combination of multiple P-MOSFET transistors arranges to control from dc source DCINPower transmission.
As shown in Fig. 2 signal read circuits 2 are connected across dc source DCINBy the output end of P-MOSFET transistors Q1,
That is the bus marco pin CONM of the drain electrode of Q1 and main-machine communication chip 4, bus signal voltages detection pin ANV and bus signals
Between current detecting pin ANA, it is made up of linear voltage-stabilizing circuit IC1 and its peripheral circuit.Signal read circuits 2 are used for from being available for
The signal of one or more slaves transmission is read in electric bus, constant voltage and current limiting treatment can be carried out to the signal for reading.
As shown in Fig. 2 linear regulator circuit IC1 constitutes constant voltage circuit with R6, R7, T4, it is the electricity to slave passback
Stream signal and/or voltage signal provide the voltage source of stabilization, carry out constant pressure treatment, and provide power limit.Resistance R8, R9,
R10, R11, R12, triode T5, electric capacity C2, C3 constitute signaling conversion circuit, and current and voltage signals are converted into main-machine communication
The recognizable scope of digital circuit as chip 4, for the treatment of main-machine communication chip 4.Optional D1, D2 are protection circuit,
Prevent high-voltage signal incoming.
As an example, linear voltage-stabilizing circuit IC1 can use commercially available LM317 regulator blocks.The voltage of LM317 regulator blocks is defeated
Enter the operating voltage supply Vm that pin IN is connected to LM317, voltage output pin OUT is connected to through foregoing signaling conversion circuit
(and possible foregoing protection circuit) is connected to the power bus at the drain electrode of transistor Q1, and voltage-regulation pin ADJ passes through
Triode T4 and be connected to the bus marco pin CONM of main-machine communication chip 4.Linear voltage-stabilizing circuit IC1 can also be adopted alternatively
With any other appropriate voltage-stabilizing device.
As shown in Fig. 2 aforementioned signal change-over circuit is connected across power bus and the master being connected at the drain electrode of transistor Q1
Between the bus signal voltages detection pin ANV and bus signals current detecting pin ANA of machine communication chip 4, for coming from
The voltage signal and current signal of bus are changed.It should be appreciated, however, that depending on application scenario and/or main-machine communication
The disposal ability of chip 4, aforementioned signal change-over circuit can further simplify, such as, only including the circuit of conversion voltage signal
Part, or the only circuit part including switching current signal.
As shown in Fig. 2 bus signal control circuit 3 can be used to realize the transmission of the driving data signal on power bus,
Including large power triode Q2 and its peripheral drive circuit.Bus signal control circuit 3 is connected across the bus of main-machine communication chip 4
Between controlling switch CONL and the power bus represented by circuit L1 and circuit L2.The peripheral drive circuit include resistance R13,
R14, R15, R16, R17, triode T6 and T7.Realize the power for driving bus by data is activation by large power triode Q2
Onto bus.Linear regulator circuit IC1 can be connected to bus signal control circuit 3 with the constant voltage circuit of R6, R7, T4 composition
The peripheral circuit, for the data-signal of power bus to be loaded into provide stabilization voltage source.Common group of Q2, R16, R17, T7
Into the bus driving circuits of current limit, R13, R14, R15, T6 constitute drive signal process circuit, and and signal-obtaining
The constant pressure source that IC1 in circuit 2 is provided limits the scope that power tube Q2 drives in bus jointly.
It should be understood that, although be illustrate only in accompanying drawing using a large power triode Q2, but inventor has already envisaged for
Be controlled to that can be arranged using the combination of two or more large power triodes will from the power for realizing driving bus
Data is activation is in bus.
It is also understood that the aforementioned peripheral drive circuit of shown large power triode Q2 is only illustrative, rather than
Restricted, this area skill personnel can build other feasible peripheral driver electricity for large power triode Q2 according to demand
Road.
Aforementioned applications according to embodiment of the present invention in can the host circuit device of power bus work when, P-MOSFET
Control circuit 1 and the collective effect of bus signal control circuit 3, drive bus to produce a voltage signal, there is provided slave part leads to
News.If for example, driving a low level voltage, P-MOSFET control circuits 1 will rapidly switch off P-MOSFET, then, bus
Signal control circuit 3 drives triode Q2 to produce a low level signal, and then, P-MOSFET control circuits 1 turn on P- again
MOSFET continues as bus-powered.
Linear voltage-stabilizing circuit IC1 included by signal read circuits 2 produces the voltage of stabilization, when slave has current signal to become
When change, current signal is converted to by voltage signal by resistance R8, R9, T5, R11, C2 amplify this signal, and do level
Conversion, there is provided do electric current reading process to main-machine communication chip 4.Voltage signal can be converted directly into main frame by R10, C3, R12
The accessible low-voltage signal of communication chip 4, there is provided give its treatment.
According to implementation method of the present utility model, P-MOSFET transistors Q1 can be from crystalline substances such as IRF9540, IRF4905
Body pipe, using the arrangement form such as IRF9540 × 2, IRF4905 × 2.The follow current of these transistors can be 2A, 10A, very
To 20A etc. such that it is able to being provided in host computer side can exceed the bus driver structure of up to 20A.
According to implementation method of the present utility model, large power triode Q2 can select the triodes such as MJD127, TIP127,
Triode T1, T2, T3, T4, T5, T6, T7 can select the triode of the models such as MMBTA05, MMBTA55.Further, big work(
Rate triode Q2 can use PNP Darlington triodes.
In one embodiment, as shown in Fig. 2 Transient Suppression Diode can be arranged between power bus L1 and L2
TVS, suppresses with to the surge that power bus are surprisingly produced, the device included by protected host lateral circuit device.
In one embodiment, can be in dc source DCINOutput end and P-MOSFET transistors Q1 between connect
Fuse, to prevent the short circuit of host circuit device and reduce upper surge.Fuse can use resettable fuse PPCT
Or resistance etc..
In one embodiment, can be in dc source DCINOutput end and P-MOSFET transistors Q1 between connect
Electric capacity, to prevent bus voltage from falling.
It should be appreciated that such as preceding institute, the P-MOSFET controls in the aforementioned embodiments described by combination accompanying drawing in the disclosure
The arrangement and implementation of circuit processed 1, signal read circuits 2 and bus signal control circuit 3 are only illustrative, it is possible to use
Other feasible arrangements and implementation.As long as it is also understood that feasible, the foregoing spy described in single implementation method
Levying to be applied in combination, or wherein independent part can be used alone, to form different implementation methods.
Therefore, although have illustrated and described specific embodiment and the application of present disclosure, it should be appreciated that, this
Disclosure is not limited to the precision architecture and component of disclosure herein disclosed, and will be to those skilled in the art aobvious
And various modifications, change and the change being clear to can be in terms of the arrangement of disclosed device disclosed herein, operation and details
Make, without departing from spirit and scope of the present disclosure.
Claims (10)
1. a kind of host circuit device for being applied to power bus, it is characterised in that including：
P-MOSFET control circuit, for realized using P-MOSFET transistors connection from power supply to the power of power bus and
The control of disconnection, including the P-MOSFET transistors and the P-MOSFET transistors drive circuit；
Signal read circuits, for reading the current signal and/or voltage signal of slave passback on the power bus, and utilize
Linear voltage-stabilizing circuit carries out constant pressure treatment, including linear voltage stabilization electricity to the current signal and/or voltage signal that read
Road and the peripheral circuit for the linear voltage-stabilizing circuit；And
Bus signal control circuit, for the transmission using positive-negative-positive large power triode driving data signal on power bus,
Including the positive-negative-positive large power triode and the peripheral circuit for the high-power PNP type triode.
2. host circuit device according to claim 1, it is characterised in that the drive circuit of the P-MOSFET transistors
It is configured to be driven by the signal of low voltage the P-MOSFET transistors of high voltage.
3. host circuit device according to claim 1, it is characterised in that the drive circuit of the P-MOSFET transistors
Further include：
Antihunt circuit, for causing to drive the drive signal of the P-MOSFET transistors steady.
4. host circuit device according to claim 1, it is characterised in that described for the outer of the linear voltage-stabilizing circuit
Enclosing circuit includes：
For the constant voltage circuit for being combined and being constituted with the linear voltage-stabilizing circuit, the constant voltage circuit is used for the electricity to slave passback
Stream signal and/or voltage signal carry out constant pressure treatment.
5. host circuit device according to claim 4, it is characterised in that the constant voltage circuit is connected to the bus letter
Number control circuit the peripheral circuit for the high-power PNP type triode, for being the number on power bus to be loaded into
It is believed that the voltage source of number offer stabilization.
6. host circuit device according to claim 1, it is characterised in that described for the outer of the linear voltage-stabilizing circuit
Enclosing circuit includes：
Signaling conversion circuit, current signal and/or voltage signal for being returned to slave carry out signal conversion, so as to change to
The scope that main-machine communication chip can be processed.
7. the host circuit device according to any one of claim 1-6, it is characterised in that the P-MOSFET transistors
It is IRF9540 or IRF4905 transistors.
8. the host circuit device according to any one of claim 1-6, it is characterised in that the linear voltage-stabilizing circuit is
LM317 regulator blocks.
9. the host circuit device according to any one of claim 1-6, it is characterised in that the positive-negative-positive high-power three
Pole pipe is MJD127 triodes or TIP127 triodes.
10. the host circuit device according to any one of claim 1-6, it is characterised in that the positive-negative-positive high-power three
Pole pipe is PNP Darlington triodes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621283837.2U CN206249302U (en) | 2016-11-28 | 2016-11-28 | It is applied to the host circuit device of power bus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621283837.2U CN206249302U (en) | 2016-11-28 | 2016-11-28 | It is applied to the host circuit device of power bus |
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| Publication Number | Publication Date |
|---|---|
| CN206249302U true CN206249302U (en) | 2017-06-13 |
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ID=59002959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621283837.2U Active CN206249302U (en) | 2016-11-28 | 2016-11-28 | It is applied to the host circuit device of power bus |
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| CN (1) | CN206249302U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109815185A (en) * | 2018-12-13 | 2019-05-28 | 山东亚华电子股份有限公司 | A kind of host for realizing two-wire system bus |
| CN111506288A (en) * | 2019-01-31 | 2020-08-07 | 上海博泰悦臻电子设备制造有限公司 | Audio processing device, electronic equipment with same and moving object |
-
2016
- 2016-11-28 CN CN201621283837.2U patent/CN206249302U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109815185A (en) * | 2018-12-13 | 2019-05-28 | 山东亚华电子股份有限公司 | A kind of host for realizing two-wire system bus |
| CN109815185B (en) * | 2018-12-13 | 2022-03-15 | 山东亚华电子股份有限公司 | Host for realizing two-wire system bus |
| CN111506288A (en) * | 2019-01-31 | 2020-08-07 | 上海博泰悦臻电子设备制造有限公司 | Audio processing device, electronic equipment with same and moving object |
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