CN203278720U - Port reusing circuit of microprocessor and applied direct-current brushless motor of port reusing circuit - Google Patents
Port reusing circuit of microprocessor and applied direct-current brushless motor of port reusing circuit Download PDFInfo
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- CN203278720U CN203278720U CN 201320307234 CN201320307234U CN203278720U CN 203278720 U CN203278720 U CN 203278720U CN 201320307234 CN201320307234 CN 201320307234 CN 201320307234 U CN201320307234 U CN 201320307234U CN 203278720 U CN203278720 U CN 203278720U
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Abstract
The utility model discloses a port reusing circuit of a microprocessor and an applied direct-current brushless motor of the port reusing circuit. An I/O port is connected with a positive input port of a comparative circuit; an output port of a reference voltage setting circuit is connected with a negative input port of the comparative circuit; and an external input signal is directly connected to the positive input port of the comparative circuit. The port reusing circuit has a simple structure, is capable of solving a problem of insufficient I/O ports of the microprocessor to some extent and is low in cost and high in reliability. The applied direct-current brushless motor of the port reusing circuit of the microprocessor comprises a motor and a motor controller; the motor controller comprises a control box and a control circuit board; and the microprocessor, an inversion unit and a detection circuit unit are arranged on the control circuit board, and the I/O port is connected with the port reusing circuit. The port reusing circuit is simple in structure, and the I/O port is reused, so there is no need to expand the I/O port or update the microprocessor, and cost is reduced.
Description
Technical field:
The utility model relates to a kind of port multiplexing circuit of microprocessor and the dc brushless motor of application thereof.
Background technology:
Microprocessor is widely used among various electric machine controllers as core parts, on microprocessor, each module of I/O port and electric machine controller is connected microprocessor by being arranged on, but the situation that often occurs the lazy weight of I/O port when using, the general method that adopts of prior art is expansion I/O port or upgrading microprocessor, such way no doubt can realize the requirement that designs, but but greatly increased cost, therefore need a kind of circuit that can realize the I/O multiplexed port, solve the situation of the I/O port deficiency of microprocessor.
Summary of the invention:
The purpose of this utility model is to provide a kind of port multiplexing circuit of microprocessor and the dc brushless motor of application thereof, this port multiplexing circuit is simple in structure, can solve to a certain extent the situation of the I/O port deficiency of microprocessor, and cost is low, reliability is high, this DC brushless motor structure is simple, multiplexing by to the I/O port do not need to expand I/O port or upgrading microprocessor, reduces costs.
The purpose of this utility model is achieved by following technical proposals.
A kind of port multiplexing circuit of microprocessor, comprise microprocessor, microprocessor arranges the I/O port, it also comprises a comparison circuit and reference voltage initialization circuit, the I/O port is connected with the positive input terminal of comparison circuit, the output of reference voltage initialization circuit connects the negative input end of comparison circuit, external input signal directly is connected to the positive input terminal of comparison circuit, when the I/O port during as input port, external input signal directly is input to signal the I/O port, during as output port, the I/O port is exported by comparison circuit when the I/O port.
Microprocessor described above is single-chip microprocessor MCU or digital signal processor DSP.
Reference voltage initialization circuit described above comprises the first resistance, the second resistance and the first electric capacity, the first resistance be connected that two ends connect respectively the first power input and ground after the resistance crossfire, at second resistance two ends the first electric capacity in parallel, the negative input end of comparison circuit is connected between the first resistance and the second resistance.
External input signal described above is voltage input signal, and this voltage input signal is to be produced by the bleeder circuit that two resistance are connected in series.
Bleeder circuit described above comprises the 3rd resistance and the 4th resistance, and the 3rd resistance connects respectively second source input and ground in two ends afterwards with the 4th resistance series connection, and the positive input terminal of comparison circuit is connected between the 3rd resistance and the 4th resistance.
Comparison circuit described above mainly is comprised of amplifier.
a kind of dc brushless motor, comprise motor entity and electric machine controller, wherein the motor entity comprises shell, be arranged on stator module and the rotor assembly of housings, electric machine controller comprises control box and is arranged on the control circuit board of control box the inside, wherein on control circuit board, microprocessor is set, inversion unit and testing circuit unit, testing circuit unit inspection rotor-position signal or phase current signal are also delivered to microprocessor, microprocessor is controlled energising or the outage of the coil windings of stator module the inside by inversion unit, microprocessor arranges the I/O port and communicates by letter with extraneous foundation, the I/O port connects a port multiplexing circuit, port multiplexing circuit comprises a comparison circuit and reference voltage initialization circuit, the I/O port is connected with the positive input terminal of comparison circuit, the output of reference voltage initialization circuit connects the negative input end of comparison circuit, external input signal directly is connected to the positive input terminal of comparison circuit, when the I/O port during as input port, external input signal directly is input to signal the I/O port, when the I/O port during as output port, the I/O port is exported by comparison circuit.
Microprocessor described above is single-chip microprocessor MCU or digital signal processor DSP.
Reference voltage initialization circuit described above comprises the first resistance, the second resistance and the first electric capacity, the first resistance be connected that two ends connect respectively the first power input and ground after the resistance crossfire, at second resistance two ends the first electric capacity in parallel, the negative input end of comparison circuit is connected between the first resistance and the second resistance, and described comparison circuit mainly is comprised of amplifier.
External input signal described above is voltage input signal, this voltage input signal is to be produced by the bleeder circuit that two resistance are connected in series, described bleeder circuit comprises the 3rd resistance and the 4th resistance, the 3rd resistance connects respectively second source input and ground in two ends afterwards with the 4th resistance series connection, and the positive input terminal of comparison circuit is connected between the 3rd resistance and the 4th resistance.
the utility model compared with prior art, have following effect: 1) the I/O port is connected with the positive input terminal of comparison circuit, the output of reference voltage initialization circuit connects the negative input end of comparison circuit, external input signal directly is connected to the positive input terminal of comparison circuit, when the I/O port during as input port, external input signal directly is input to signal the I/O port, when the I/O port during as output port, the I/O port is exported by comparison circuit, this is simple in structure, can solve to a certain extent the situation of the I/O port deficiency of microprocessor, and cost is low, reliability is high, 2) the reference voltage initialization circuit comprises the first resistance, the second resistance and the first electric capacity, the first resistance be connected that two ends connect respectively the first power input and ground after the resistance crossfire, at second resistance two ends the first electric capacity in parallel, the negative input end of comparison circuit is connected between the first resistance and the second resistance, this is simple in structure, the reference voltage that produces is stable, and reliability is high, 3) motor entity and electric machine controller, electric machine controller comprises control box and is arranged on the control circuit board of control box the inside, microprocessor, inversion unit and testing circuit unit wherein are set on control circuit board, microprocessor arranges the I/O port and communicates by letter with extraneous foundation, the I/O port connects a port multiplexing circuit, port multiplexing circuit comprises a comparison circuit and reference voltage initialization circuit, this is simple in structure, can solve to a certain extent the situation of dc brushless motor I/O port deficiency, satisfy design or instructions for use, and cost is low, reliability is high.
Description of drawings:
Fig. 1 is circuit diagram of the present utility model.
Fig. 2 is the structural representation of dc brushless motor of the present utility model.
Embodiment:
Also by reference to the accompanying drawings the utility model is described in further detail below by specific embodiment.
embodiment one: as shown in Figure 1, the utility model is a kind of port multiplexing circuit of microprocessor, comprise microprocessor, microprocessor arranges the I/O port, it also comprises a comparison circuit and reference voltage initialization circuit, the I/O port is connected with the positive input terminal of comparison circuit, the output of reference voltage initialization circuit connects the negative input end of comparison circuit, external input signal INA directly is connected to the positive input terminal of comparison circuit, when the I/O port during as input port, external input signal INA directly is input to signal the I/O port, when the I/O port during as output port, the I/O port is exported by comparison circuit.
Microprocessor is single-chip microprocessor MCU or digital signal processor DSP.
The reference voltage initialization circuit comprises the first resistance R 1, the second resistance R 2 and the first capacitor C 1, the first resistance R 1 be connected that two ends connect respectively the first power input Vcc1 and ground after resistance R 2 crossfires, in second resistance R 2 two ends the first capacitor C 1 in parallel, the negative input end of comparison circuit is connected between the first resistance R 1 and the second resistance R 2.
External input signal INA is voltage input signal, this voltage input signal INA is produced by the bleeder circuit that two resistance are connected in series, distinguish the motor of different large fraction horsepowers by bleeder circuit, can be 0.5P, 1P or 3P, perhaps other, and the size by two resistance is regulated the size of this voltage input signal INA than row.
Bleeder circuit comprises that the 3rd resistance R 3 and the 4th resistance R 4, the three resistance R 3 connect respectively second source input Vcc2 and ground in two ends afterwards with the 4th resistance R 4 series connection, and the positive input terminal of comparison circuit is connected between the 3rd resistance R 3 and the 4th resistance R 4.
Comparison circuit mainly is comprised of amplifier.
Principle of the present utility model is: the I/O port is connected with the positive input terminal of comparison circuit, the output of reference voltage initialization circuit connects the negative input end of comparison circuit, external input signal INA directly is connected to the positive input terminal of comparison circuit, when the I/O port during as input port, external input signal INA directly is input to signal the I/O port, when the I/O port during as output port, the I/O port is exported by comparison circuit, this is simple in structure, can solve to a certain extent the situation of the I/O port deficiency of microprocessor, and cost is low, reliability is high.
embodiment two: as shown in Figure 2, the utility model is a kind of dc brushless motor of using the port multiplexing circuit of microprocessor described above, comprise motor entity and electric machine controller, wherein the motor entity comprises shell, be arranged on stator module and the rotor assembly of housings, electric machine controller comprises control box and is arranged on the control circuit board of control box the inside, wherein on control circuit board, microprocessor is set, inversion unit and testing circuit unit, testing circuit unit inspection rotor-position signal or phase current signal are also delivered to microprocessor, microprocessor is controlled energising or the outage of the coil windings of stator module the inside by inversion unit, microprocessor arranges the I/O port and communicates by letter with extraneous foundation, the I/O port connects a port multiplexing circuit, port multiplexing circuit comprises a comparison circuit and reference voltage initialization circuit, the I/O port is connected with the positive input terminal of comparison circuit, the output of reference voltage initialization circuit connects the negative input end of comparison circuit, external input signal INA directly is connected to the positive input terminal of comparison circuit, when the I/O port during as input port, external input signal INA directly is input to signal the I/O port, when the I/O port during as output port, the I/O port is exported by comparison circuit.
Microprocessor is single-chip microprocessor MCU or digital signal processor DSP.
The reference voltage initialization circuit comprises the first resistance R 1, the second resistance R 2 and the first capacitor C 1, the first resistance R 1 be connected that two ends connect respectively the first power input Vcc1 and ground after resistance R 2 crossfires, in second resistance R 2 two ends the first capacitor C 1 in parallel, the negative input end of comparison circuit is connected between the first resistance R 1 and the second resistance R 2, and described comparison circuit mainly is comprised of amplifier.
External input signal INA is voltage input signal, this voltage input signal INA is produced by the bleeder circuit that two resistance are connected in series, described bleeder circuit comprises the 3rd resistance R 3 and the 4th resistance R 4, the 3rd resistance R 3 connects respectively second source input Vcc2 and ground in two ends afterwards with the 4th resistance R 4 series connection, and the positive input terminal of comparison circuit is connected between the 3rd resistance R 3 and the 4th resistance R 4.
Principle of the present utility model is: motor entity and electric machine controller, electric machine controller comprises control box and is arranged on the control circuit board of control box the inside, microprocessor, inversion unit and testing circuit unit wherein are set on control circuit board, microprocessor arranges the I/O port and communicates by letter with extraneous foundation, the I/O port connects a port multiplexing circuit, port multiplexing circuit comprises a comparison circuit and reference voltage initialization circuit, this is simple in structure, multiplexing by to the I/O port, do not need to expand I/O port or upgrading microprocessor, reduce costs.
Claims (10)
1. the port multiplexing circuit of a microprocessor, comprise microprocessor, microprocessor arranges the I/O port, it is characterized in that: it also comprises a comparison circuit and reference voltage initialization circuit, the I/O port is connected with the positive input terminal of comparison circuit, the output of reference voltage initialization circuit connects the negative input end of comparison circuit, external input signal (INA) directly is connected to the positive input terminal of comparison circuit, when the I/O port during as input port, external input signal (INA) directly is input to signal the I/O port, when the I/O port during as output port, the I/O port is exported by comparison circuit.
2. the port multiplexing circuit of a kind of microprocessor according to claim 1, it is characterized in that: described microprocessor is single-chip microprocessor MCU or digital signal processor DSP.
3. the port multiplexing circuit of a kind of microprocessor according to claim 1 and 2, it is characterized in that: described reference voltage initialization circuit comprises the first resistance (R1), the second resistance (R2) and the first electric capacity (C1), the first resistance (R1) be connected that two ends connect respectively the first power input (Vcc1) and ground after resistance (R2) crossfire, at the second resistance (R2) two ends the first electric capacity (C1) in parallel, the negative input end of comparison circuit is connected between the first resistance (R1) and the second resistance (R2).
4. the port multiplexing circuit of a kind of microprocessor according to claim 1, it is characterized in that: external input signal (INA) is voltage input signal, this voltage input signal (INA) is to be produced by the bleeder circuit that two resistance are connected in series.
5. the port multiplexing circuit of a kind of microprocessor according to claim 4, it is characterized in that: described bleeder circuit comprises the 3rd resistance (R3) and the 4th resistance (R4), the 3rd resistance (R3) connects respectively second source input (Vcc2) and ground in two ends afterwards with the 4th resistance (R4) series connection, and the positive input terminal of comparison circuit is connected between the 3rd resistance (R3) and the 4th resistance (R4).
6. the port multiplexing circuit of a kind of microprocessor according to claim 1 and 2, it is characterized in that: described comparison circuit mainly is comprised of amplifier.
7. an application rights requires the dc brushless motor of the port multiplexing circuit of 1 described microprocessor, comprise motor entity and electric machine controller, wherein the motor entity comprises shell, be arranged on stator module and the rotor assembly of housings, electric machine controller comprises control box and is arranged on the control circuit board of control box the inside, wherein on control circuit board, microprocessor is set, inversion unit and testing circuit unit, testing circuit unit inspection rotor-position signal or phase current signal are also delivered to microprocessor, microprocessor is controlled energising or the outage of the coil windings of stator module the inside by inversion unit, microprocessor arranges the I/O port and communicates by letter with extraneous foundation, it is characterized in that: the I/O port connects a port multiplexing circuit, port multiplexing circuit comprises a comparison circuit and reference voltage initialization circuit, the I/O port is connected with the positive input terminal of comparison circuit, the output of reference voltage initialization circuit connects the negative input end of comparison circuit, external input signal (INA) directly is connected to the positive input terminal of comparison circuit, when the I/O port during as input port, external input signal (INA) directly is input to signal the I/O port, when the I/O port during as output port, the I/O port is exported by comparison circuit.
8. a kind of dc brushless motor according to claim 7, it is characterized in that: described microprocessor is single-chip microprocessor MCU or digital signal processor DSP.
9. according to claim 7 or 8 described a kind of dc brushless motors, it is characterized in that: described reference voltage initialization circuit comprises the first resistance (R1), the second resistance (R2) and the first electric capacity (C1), the first resistance (R1) be connected that two ends connect respectively the first power input (Vcc1) and ground after resistance (R2) crossfire, at the second resistance (R2) two ends the first electric capacity (C1) in parallel, the negative input end of comparison circuit is connected between the first resistance (R1) and the second resistance (R2), and described comparison circuit mainly is comprised of amplifier.
10. a kind of dc brushless motor according to claim 7, it is characterized in that: external input signal (INA) is voltage input signal, this voltage input signal (INA) is to be produced by the bleeder circuit that two resistance are connected in series, described bleeder circuit comprises the 3rd resistance (R3) and the 4th resistance (R4), the 3rd resistance (R3) connects respectively second source input (Vcc2) and ground in two ends afterwards with the 4th resistance (R4) series connection, and the positive input terminal of comparison circuit is connected between the 3rd resistance (R3) and the 4th resistance (R4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320307234 CN203278720U (en) | 2013-05-30 | 2013-05-30 | Port reusing circuit of microprocessor and applied direct-current brushless motor of port reusing circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320307234 CN203278720U (en) | 2013-05-30 | 2013-05-30 | Port reusing circuit of microprocessor and applied direct-current brushless motor of port reusing circuit |
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| Publication Number | Publication Date |
|---|---|
| CN203278720U true CN203278720U (en) | 2013-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320307234 Expired - Lifetime CN203278720U (en) | 2013-05-30 | 2013-05-30 | Port reusing circuit of microprocessor and applied direct-current brushless motor of port reusing circuit |
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| Country | Link |
|---|---|
| CN (1) | CN203278720U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104318952A (en) * | 2014-09-30 | 2015-01-28 | 山东华芯半导体有限公司 | Circuit and method for reducing number of voltage ports in DRAM |
| CN109633248A (en) * | 2019-02-02 | 2019-04-16 | 华润新能源(大同阳高)风能有限公司 | A kind of observation circuit in direct current output circuit |
-
2013
- 2013-05-30 CN CN 201320307234 patent/CN203278720U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104318952A (en) * | 2014-09-30 | 2015-01-28 | 山东华芯半导体有限公司 | Circuit and method for reducing number of voltage ports in DRAM |
| CN104318952B (en) * | 2014-09-30 | 2017-11-10 | 西安紫光国芯半导体有限公司 | A kind of circuit and method for reducing voltage port in DRAM |
| CN109633248A (en) * | 2019-02-02 | 2019-04-16 | 华润新能源(大同阳高)风能有限公司 | A kind of observation circuit in direct current output circuit |
| CN109633248B (en) * | 2019-02-02 | 2024-03-19 | 华润新能源(大同阳高)风能有限公司 | Monitoring circuit of direct current output loop |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131106 |
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| CX01 | Expiry of patent term |