CN109649115A - A kind of on-board air conditioner governor control circuit - Google Patents
A kind of on-board air conditioner governor control circuit Download PDFInfo
- Publication number
- CN109649115A CN109649115A CN201811269445.4A CN201811269445A CN109649115A CN 109649115 A CN109649115 A CN 109649115A CN 201811269445 A CN201811269445 A CN 201811269445A CN 109649115 A CN109649115 A CN 109649115A
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- Prior art keywords
- resistance
- capacitor
- triode
- operational amplifier
- voltage
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
- B60H1/00821—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being ventilating, air admitting or air distributing devices
- B60H1/00828—Ventilators, e.g. speed control
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/88—Optimized components or subsystems, e.g. lighting, actively controlled glasses
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
The present invention relates to a kind of on-board air conditioner governor control circuits, including resistance R10, resistance R11, capacitor C3, voltage follower U1-B, resistance R9, resistance R1, resistance R2, capacitor C2, operational amplifier U1-A, resistance R3, capacitor C4, resistance R12, resistance R7, resistance R8, resistance R6, triode Q2, resistance R5, resistance R4, triode Q1, resistance R13, resistance R14 and capacitor C4.Compared with prior art, the beneficial effects of the present invention are: 1. control circuits provided by the invention realize the purpose being adjusted to rotation speed of fan in such a way that PWM is adjusted the speed, rotation speed of fan can consecutive variations, there is no pause and transition in rhythm or melody senses existing for existing gear changing mode when use.2. the operational heat amount of control circuit provided by the invention is extremely low, it is not necessarily to finned, is more energy-saving and environmentally friendly.3. without serious electromagnetic radiation and electromagnetic interference.
Description
Technical field
The present invention relates to vehicle electronics technical fields, more particularly, to a kind of on-board air conditioner governor control circuit.
Background technique
Currently, the governor for being widely used in on-board air conditioner is generally mechanical resistance-type governor, mechanical resistance-type speed regulation
Device hardware circuit is simple, at low cost, facilitates maintenance, switches different resistance using silicon-controlled or relay, makes different big
Small electric current passes through air blower, realizes the speed of control blower speed.But the only a small amount of several fixed gears of this governor
Position is optional, bulky, and has serious electromagnetic radiation and electromagnetic interference, while having amount of heat on resistance and disappearing
Consumption.It is unfavorable for energy conservation.
Summary of the invention
The present invention be solve gear existing for the mechanical resistance-type governor that provides of the prior art is less, gear cannot be continuous
The technological deficiency of variation, not energy-efficient etc., provides a kind of on-board air conditioner governor control circuit.
To realize the above goal of the invention, the technical solution adopted is that:
A kind of on-board air conditioner governor control circuit, including resistance R10, resistance R11, capacitor C3, voltage follower U1-B, resistance
R9, resistance R1, resistance R2, capacitor C2, operational amplifier U1-A, resistance R3, capacitor C4, resistance R12, resistance R7, resistance R8, electricity
Hinder R6, triode Q2, resistance R5, resistance R4, triode Q1, resistance R13, resistance R14 and capacitor C5；
Wherein one end of resistance R10 is grounded by resistance R11, and the other end of resistance R10 is grounded by capacitor C3, resistance R10's
The other end is connect with the normal phase input end of the voltage follower U1-B；The inverting input terminal of voltage follower U1-B and voltage with
It is connected with the output end of device U1-B, the output end of voltage follower U1-B is passing through resistance R9 and the operational amplifier U1-A just
The connection of phase input terminal；The inverting input terminal of operational amplifier U1-A is grounded by resistance R2, and the reverse phase of operational amplifier U1-A is defeated
Enter end and power supply VCC1 is accessed by resistance R1, the inverting input terminal of operational amplifier U1-A passes through capacitor C2 and operational amplifier
The output end of U1-A connects, and the output end of operational amplifier U1-A passes through one end of resistance R3 and capacitor C4, the collection of triode Q1
Electrode connection, the other end ground connection of capacitor C4；The base stage of triode Q1 is connect by resistance R4 with the emitter of triode Q1, and three
The emitter of pole pipe Q1 is grounded；The base stage of triode Q1 is connect with one end of resistance R5；One end of resistance R8 and operational amplifier
The collector connection of the normal phase input end, triode Q2 of U1-A；The base stage of triode Q2 passes through the hair of resistance R6 and triode Q2
Emitter-base bandgap grading connection, the emitter ground connection of triode Q2, the base stage of triode Q2 are connect with one end of resistance R7, the other end of resistance R7
Power supply VCC2 is accessed by resistance R12；One end of the resistance R13 is connect with the other end of the resistance R8, and resistance R13's is another
One end passes through resistance R14, capacitor C5 ground connection respectively.
Control circuit provided by the invention is before use, by the PWM pin BLOWER_ of one end of resistance R10 and single-chip microcontroller
PWM is connected, by the air blower negative feedback voltage pin FAN-_ of the other end of resistance R8, one end of resistance R13 and single-chip microcontroller
FB is connected, and the pin FAN_STOP of the other end of resistance R7, the other end of resistance R5 and single-chip microcontroller is connected, will be electric
The other end and the ADC pin FAN-_FB_ADC of single-chip microcontroller for hindering R13 connect, and by the collector and list of triode Q1
The FAN_DR pin of piece machine connects.
Further, the voltage of the power supply VCC1 is 12V；The voltage of the power supply VCC2 is 5V.
It further, further include having capacitor C1, the power supply VCC1 is grounded by capacitor C1.
Its specifically used working principle is as follows:
The pulse square wave of the duty ratio of the PWM pin BLOWER_PWM output of single-chip microcontroller, by R10, C3 integrating circuit is converted into
Smooth level signal keeps apart the power supply 5V voltage and power supply 12V voltage that single-chip microcontroller is powered by voltage follower U1-B,
Simultaneously the signal after isolation is sent to the normal phase input end of operational amplifier U1_A, by the air blower negative feedback voltage of single-chip microcontroller
The ratio circuit and R3 and C2 composition integral of R8, R9 resistance composition after resistance R1, R2 and 12V partial pressure of pin FAN-_FB
Corresponding linear voltage is exported in the FAN_DR pin of single-chip microcontroller after circuit.This voltage is according to the variation of PWM frequency and duty ratio
Corresponding output variation is done, the builtin voltage of control speed adjusting module is removed, to achieve the purpose that reconcile rotation speed of fan automatically.
The negative feedback voltage pin FAN-_FB of single-chip microcontroller is sent into the ADC pin FAN-_ of single-chip microcontroller after being divided by R13 and R14
FB_ADC.ADC pin FAN-_FB_ADC detects that the mutation of negative feedback voltage pin FAN-_FB negative feedback voltage is lower than or surpasses
When crossing setting value, the pin FAN_STOP of single-chip microcontroller will become high level from low level, make FAN_DR pin and negative feedback voltage
Pin FAN-_FB is separately input to ground by triode Q1 and Q2, and blower stops operating at this time.Play the work of protection air blower
With.
Compared with prior art, the beneficial effects of the present invention are:
1. control circuit provided by the invention realizes the purpose being adjusted to rotation speed of fan, blower in such a way that PWM is adjusted the speed
Revolving speed can consecutive variations, there is no pause and transition in rhythm or melody senses existing for existing gear changing mode when use.
2. the operational heat amount of control circuit provided by the invention is extremely low, it is not necessarily to finned, is more energy-saving and environmentally friendly.
3. without serious electromagnetic radiation and electromagnetic interference.
Detailed description of the invention
Fig. 1 is the partial schematic diagram one of control circuit.
Fig. 2 is the partial schematic diagram two of control circuit.
Specific embodiment
The attached figures are only used for illustrative purposes and cannot be understood as limitating the patent；
Below in conjunction with drawings and examples, the present invention is further elaborated.
Embodiment 1
As shown in Figure 1, 2, a kind of on-board air conditioner governor control circuit, including resistance R10, resistance R11, capacitor C3, voltage with
With device U1-B, resistance R9, resistance R1, resistance R2, capacitor C2, operational amplifier U1-A, resistance R3, capacitor C4, resistance R12, electricity
Hinder R7, resistance R8, resistance R6, triode Q2, resistance R5, resistance R4, triode Q1, resistance R13, resistance R14 and capacitor C5；
Wherein one end of resistance R10 is grounded by resistance R11, and the other end of resistance R10 is grounded by capacitor C3, resistance R10's
The other end is connect with the normal phase input end of the voltage follower U1-B；The inverting input terminal of voltage follower U1-B and voltage with
It is connected with the output end of device U1-B, the output end of voltage follower U1-B is passing through resistance R9 and the operational amplifier U1-A just
The connection of phase input terminal；The inverting input terminal of operational amplifier U1-A is grounded by resistance R2, and the reverse phase of operational amplifier U1-A is defeated
Enter end and power supply VCC1 is accessed by resistance R1, the inverting input terminal of operational amplifier U1-A passes through capacitor C2 and operational amplifier
The output end of U1-A connects, and the output end of operational amplifier U1-A passes through one end of resistance R3 and capacitor C4, the collection of triode Q1
Electrode connection, the other end ground connection of capacitor C4；The base stage of triode Q1 is connect by resistance R4 with the emitter of triode Q1, and three
The emitter of pole pipe Q1 is grounded；The base stage of triode Q1 is connect with one end of resistance R5；One end of resistance R8 and operational amplifier
The collector connection of the normal phase input end, triode Q2 of U1-A；The base stage of triode Q2 passes through the hair of resistance R6 and triode Q2
Emitter-base bandgap grading connection, the emitter ground connection of triode Q2, the base stage of triode Q2 are connect with one end of resistance R7, the other end of resistance R7
Power supply VCC2 is accessed by resistance R12；One end of the resistance R13 is connect with the other end of the resistance R8, and resistance R13's is another
One end passes through resistance R14, capacitor C5 ground connection respectively.
Control circuit provided by the invention is before use, by the PWM pin BLOWER_ of one end of resistance R10 and single-chip microcontroller
PWM is connected, by the air blower negative feedback voltage pin FAN-_ of the other end of resistance R8, one end of resistance R13 and single-chip microcontroller
FB is connected, and the pin FAN_STOP of the other end of resistance R7, the other end of resistance R5 and single-chip microcontroller is connected, will be electric
The other end and the ADC pin FAN-_FB_ADC of single-chip microcontroller for hindering R13 connect, and by the collector and list of triode Q1
The FAN_DR pin of piece machine connects.
Further, the voltage of the power supply VCC1 is 12V；The voltage of the power supply VCC2 is 5V.
It further, further include having capacitor C1, the power supply VCC1 is grounded by capacitor C1.
Its specifically used working principle is as follows:
The pulse square wave of the duty ratio of the PWM pin BLOWER_PWM output of single-chip microcontroller, by R10, C3 integrating circuit is converted into
Smooth level signal keeps apart the power supply 5V voltage and power supply 12V voltage that single-chip microcontroller is powered by voltage follower U1-B,
Simultaneously the signal after isolation is sent to the normal phase input end of operational amplifier U1_A, by the air blower negative feedback voltage of single-chip microcontroller
The ratio circuit and R3 and C2 composition integral of R8, R9 resistance composition after resistance R1, R2 and 12V partial pressure of pin FAN-_FB
Corresponding linear voltage is exported in the FAN_DR pin of single-chip microcontroller after circuit.This voltage is according to the variation of PWM frequency and duty ratio
Corresponding output variation is done, the builtin voltage of control speed adjusting module is removed, to achieve the purpose that reconcile rotation speed of fan automatically.
The negative feedback voltage pin FAN-_FB of single-chip microcontroller is sent into the ADC pin FAN-_ of single-chip microcontroller after being divided by R13 and R14
FB_ADC.ADC pin FAN-_FB_ADC detects that the mutation of negative feedback voltage pin FAN-_FB negative feedback voltage is lower than or surpasses
When crossing setting value, the pin FAN_STOP of single-chip microcontroller will become high level from low level, make FAN_DR pin and negative feedback voltage
Pin FAN-_FB is separately input to ground by triode Q1 and Q2, and blower stops operating at this time.Play the work of protection air blower
With.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this
Made any modifications, equivalent replacements, and improvements etc., should be included in the claims in the present invention within the spirit and principle of invention
Protection scope within.
Claims (3)
1. a kind of on-board air conditioner governor control circuit, it is characterised in that: including resistance R10, resistance R11, capacitor C3, voltage with
With device U1-B, resistance R9, resistance R1, resistance R2, capacitor C2, operational amplifier U1-A, resistance R3, capacitor C4, resistance R12, electricity
Hinder R7, resistance R8, resistance R6, triode Q2, resistance R5, resistance R4, triode Q1, resistance R13, resistance R14 and capacitor C5；
Wherein one end of resistance R10 is grounded by resistance R11, and the other end of resistance R10 is grounded by capacitor C3, resistance R10's
The other end is connect with the normal phase input end of the voltage follower U1-B；The inverting input terminal of voltage follower U1-B and voltage with
It is connected with the output end of device U1-B, the output end of voltage follower U1-B is passing through resistance R9 and the operational amplifier U1-A just
The connection of phase input terminal；The inverting input terminal of operational amplifier U1-A is grounded by resistance R2, and the reverse phase of operational amplifier U1-A is defeated
Enter end and power supply VCC1 is accessed by resistance R1, the inverting input terminal of operational amplifier U1-A passes through capacitor C2 and operational amplifier
The output end of U1-A connects, and the output end of operational amplifier U1-A passes through one end of resistance R3 and capacitor C4, the collection of triode Q1
Electrode connection, the other end ground connection of capacitor C4；The base stage of triode Q1 is connect by resistance R4 with the emitter of triode Q1, and three
The emitter of pole pipe Q1 is grounded；The base stage of triode Q1 is connect with one end of resistance R5；One end of resistance R8 and operational amplifier
The collector connection of the normal phase input end, triode Q2 of U1-A；The base stage of triode Q2 passes through the hair of resistance R6 and triode Q2
Emitter-base bandgap grading connection, the emitter ground connection of triode Q2, the base stage of triode Q2 are connect with one end of resistance R7, the other end of resistance R7
Power supply VCC2 is accessed by resistance R12；One end of the resistance R13 is connect with the other end of the resistance R8, and resistance R13's is another
One end passes through resistance R14, capacitor C5 ground connection respectively.
2. on-board air conditioner governor control circuit according to claim 1, it is characterised in that: the voltage of the power supply VCC1
For 12V；The voltage of the power supply VCC2 is 5V.
3. on-board air conditioner governor control circuit according to claim 1, it is characterised in that: it further include having capacitor C1, institute
Power supply VCC1 is stated to be grounded by capacitor C1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811269445.4A CN109649115B (en) | 2018-10-29 | 2018-10-29 | Vehicle-mounted air conditioner speed regulator control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811269445.4A CN109649115B (en) | 2018-10-29 | 2018-10-29 | Vehicle-mounted air conditioner speed regulator control circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109649115A true CN109649115A (en) | 2019-04-19 |
| CN109649115B CN109649115B (en) | 2021-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811269445.4A Active CN109649115B (en) | 2018-10-29 | 2018-10-29 | Vehicle-mounted air conditioner speed regulator control circuit |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4408442A1 (en) * | 1994-03-12 | 1995-09-14 | Telefunken Microelectron | Circuit to control speed of universal motor e.g for vehicle air conditioner |
| CN201382008Y (en) * | 2009-04-22 | 2010-01-13 | 上海奉天电子有限公司 | Wind-speed gear control circuit of blast blower |
| CN203081825U (en) * | 2013-01-23 | 2013-07-24 | 北京汽车股份有限公司 | Automobile air conditioner wind speed control circuit |
| CN203084590U (en) * | 2012-12-26 | 2013-07-24 | 佛山市顺德区瑞德电子实业有限公司 | Improved-structure PWM linear voltage regulator circuit |
| CN105425884A (en) * | 2015-12-29 | 2016-03-23 | 吉林大学 | Bi-directional constant current source device based on dual negative feedback control |
| CN105539066A (en) * | 2015-12-25 | 2016-05-04 | 博耐尔汽车电气系统有限公司 | Air volume speed regulation circuit for automobile air conditioner |
| CN107806438A (en) * | 2017-12-12 | 2018-03-16 | 四川新驱科为科技有限公司 | A kind of intelligent air exhausting system for isolating rear class interference |
| CN107994822A (en) * | 2017-11-21 | 2018-05-04 | 武汉奥泽电子有限公司 | A kind of PWM speed adjusting modules |
-
2018
- 2018-10-29 CN CN201811269445.4A patent/CN109649115B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4408442A1 (en) * | 1994-03-12 | 1995-09-14 | Telefunken Microelectron | Circuit to control speed of universal motor e.g for vehicle air conditioner |
| CN201382008Y (en) * | 2009-04-22 | 2010-01-13 | 上海奉天电子有限公司 | Wind-speed gear control circuit of blast blower |
| CN203084590U (en) * | 2012-12-26 | 2013-07-24 | 佛山市顺德区瑞德电子实业有限公司 | Improved-structure PWM linear voltage regulator circuit |
| CN203081825U (en) * | 2013-01-23 | 2013-07-24 | 北京汽车股份有限公司 | Automobile air conditioner wind speed control circuit |
| CN105539066A (en) * | 2015-12-25 | 2016-05-04 | 博耐尔汽车电气系统有限公司 | Air volume speed regulation circuit for automobile air conditioner |
| CN105425884A (en) * | 2015-12-29 | 2016-03-23 | 吉林大学 | Bi-directional constant current source device based on dual negative feedback control |
| CN107994822A (en) * | 2017-11-21 | 2018-05-04 | 武汉奥泽电子有限公司 | A kind of PWM speed adjusting modules |
| CN107806438A (en) * | 2017-12-12 | 2018-03-16 | 四川新驱科为科技有限公司 | A kind of intelligent air exhausting system for isolating rear class interference |
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| Publication number | Publication date |
|---|---|
| CN109649115B (en) | 2021-08-06 |
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