CN106842019B - A kind of inner-outer circulation motor open detection circuit of air-conditioner controller - Google Patents
A kind of inner-outer circulation motor open detection circuit of air-conditioner controller Download PDFInfo
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- CN106842019B CN106842019B CN201611208609.3A CN201611208609A CN106842019B CN 106842019 B CN106842019 B CN 106842019B CN 201611208609 A CN201611208609 A CN 201611208609A CN 106842019 B CN106842019 B CN 106842019B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
- G01R31/343—Testing dynamo-electric machines in operation
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Abstract
The present invention provides a kind of inner-outer circulation motor open detection circuits of air-conditioner controller, including MCU Main Processing Unit, the MCU Main Processing Unit is equipped with interior loop control signal output end and outer circulation control signal output, and the interior loop control signal output end and outer circulation control signal output are separately connected the interior loop control signal input part and outer circulation control signal input of the motor drive ic；The MCU Main Processing Unit is additionally provided with open circuit detection enable end and open circuit test side, and the open circuit detection enable end connects open circuit diagnostic circuit with open circuit test side, and the open circuit diagnostic circuit is equipped with triode.The inner-outer circulation motor open detection circuit for implementing a kind of air-conditioner controller provided by the invention, with motor with being set in air-conditioner controller pcb board external circuit, overall cost is lower, and the development cycle is short, it is easy to operate, detection efficiency is high and detection is accurate with surveying with inspection without dismantling air-conditioning system case.
Description
Technical field
The present invention relates to air-conditioner controller detection technique field more particularly to a kind of inner-outer circulation motors of air-conditioner controller
Open detection circuit.
Background technique
It is equipped with inner-outer circulation motor in air-conditioner controller system at present, but client is to save cost, is not provided with pair
The feedback circuit of inner-outer circulation motor.In the production process of vehicle, if inner-outer circulation motor and connector disconnect, and
The open detection circuit outside air-conditioner controller pcb board that circuit itself does not detect the folding of inner-outer circulation motor,
It will cause client to be difficult to find the problem a little, generally require to dismantle air-conditioning system case, check inner-outer circulation motor and linear speed, make
At the working condition taken considerable time in vehicle assembling production process with manpower inspection inner-outer circulation motor.It is asked for this
Topic, part producing quotient, uses driving chip or external operational amplifier circuit to detect the size of inner-outer circulation current of electric, comes at present
Judge whether motor opens a way, but this inspection policies are more demanding to motor drive ic, cost is more expensive, and needs to adjust repeatedly
Examination confirms driving current, and the development cycle is longer, cost is more expensive.
Summary of the invention
The present invention provides a kind of inner-outer circulation motor open detection circuit of air-conditioner controller, solves in inner-outer circulation electricity
The open circuit diagnostic circuit comprising triode and divider resistance is equipped between the driving signal input and MCU Main Processing Unit of machine to examine
The technical issues of surveying inner-outer circulation motor open circuit.
In order to solve the above technical problems, the present invention provides a kind of inner-outer circulation motor open circuit detection electricity of air-conditioner controller
Road, the first driving signal input and the second driving signal input of the inner-outer circulation motor are separately connected motor driven core
The interior circulation driving signal output end and outer circulation driving signal output end of piece, the inner-outer circulation motor open detection circuit packet
MCU Main Processing Unit is included, the MCU Main Processing Unit is equipped with interior loop control signal output end and outer circulation control signal output,
The interior loop control signal output end and outer circulation control signal output are separately connected the interior of the motor drive ic and follow
Ring control signal input and outer circulation control signal input；
The MCU Main Processing Unit is additionally provided with open circuit detection enable end and open circuit test side, open circuit detection enable end with
Open circuit test side connection open circuit diagnostic circuit, the open circuit diagnostic circuit are equipped with triode；The emitter of the triode accesses
Circuit power supply, the open circuit that base stage connects detect enable end, and collector connects the second driving of the inner-outer circulation motor
Signal input part, the second driving signal input of the inner-outer circulation motor are also connected with the open circuit test side.
Further, it is described open circuit diagnostic circuit be additionally provided be connected to the inner-outer circulation motor the first driving signal it is defeated
Enter the motor divider resistance between end and ground；The resistance value of the motor divider resistance is 2000 Ω.
Further, the divider resistance is set on the Internal PCB of the air-conditioner controller.
Further, the open circuit of the second driving signal input of the inner-outer circulation motor and the MCU Main Processing Unit
The first protective circuit of voltage regulation is connected between test side.
Further, first protective circuit of voltage regulation is equipped with the first protective resistance, Opposite direction connection is examined in the open circuit
Survey the first zener diode and first filter capacitor in parallel with first zener diode between end and ground；Described first
Protective resistance is series at the second driving signal input of the inner-outer circulation motor and the cathode of first zener diode
Between end.
Further, between the second driving signal input of the inner-outer circulation motor and the collector of the triode
It is connected with the second protective circuit of voltage regulation.
Further, second protective circuit of voltage regulation is equipped with Opposite direction connection in the collector and ground of the triode
Between the second zener diode and be connected to the inner-outer circulation motor the second driving signal input and second pressure stabilizing
Second protective resistance of the negative pole end of diode.
Further, it is connected between the base stage of the triode and the open circuit of MCU Main Processing Unit detection enable end
Third protective resistance.
A kind of inner-outer circulation motor open detection circuit of air-conditioner controller provided by the invention, passes through MCU Main Processing Unit
It controls the inner-outer circulation motor and motor drive ic disconnects and enters diagnostic mode, further turn-on transistor, exports 5V
Operating voltage give inner-outer circulation motor, further detect inner-outer circulation motor the second driving signal input voltage value
Determine whether inner-outer circulation motor opens a way, entire inner-outer circulation motor open detection circuit is equipped on MCU air-conditioner controller
Main control unit has also used the electronic component of the low cost such as triode and a small amount of resistance, capacitor, diode, same with motor
In air-conditioner controller pcb board external circuit, overall cost is lower, and the development cycle is short, without dismantling air-conditioning system case, with
It surveys with inspection, it is easy to operate, detection efficiency is high and detection is accurate.
Detailed description of the invention
Fig. 1 is that a kind of overall circuit of the inner-outer circulation motor open detection circuit of air-conditioner controller provided by the invention is former
Reason figure；
Fig. 2 is under a kind of open-circuit condition of inner-outer circulation motor open detection circuit of air-conditioner controller provided by the invention
Circuit diagram.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description.The value size of following component is only preferred embodiment, does not constitute limiting the scope of the invention.
It is a kind of circuit of the inner-outer circulation motor open detection circuit of air-conditioner controller provided by the invention referring to Fig. 1
Schematic diagram.In the present embodiment, the inner-outer circulation motor open detection circuit of a kind of air-conditioner controller, it is described inside and outside to follow
The the first driving signal input m1 and the second driving signal input m2 of ring motor M is separately connected motor drive ic
The interior circulation driving signal output end REC_Out of BD16910 and outer circulation driving signal output end FRE_Out, it is described inside and outside to follow
Ring motor M open detection circuit includes MCU Main Processing Unit, and the MCU Main Processing Unit 10 is equipped with interior loop control signal output end
It REC_Ctrl and outer circulation control signal output FRE_Ctrl, the interior loop control signal output end REC_Ctrl and follows outside
Ring control signal output FRE_Ctrl is separately connected the interior loop control signal input part of the motor drive ic BD16910
REC and outer circulation control signal input FRE；
The MCU Main Processing Unit 10 is additionally provided with open circuit detection enable end Motor Diag Open_EN and open circuit test side,
The open circuit detection enable end Motor Diag Open_EN connects open circuit with open circuit test side Motor Diag Open AD and examines
Deenergizing 20, the open circuit diagnostic circuit 20 are equipped with triode Q1；The emitter e of the triode Q1 accesses circuit power supply
VCC, the base stage b connection open circuit detect enable end Motor Diag Open_EN, the collector c connection inner-outer circulation motor
The second driving signal input m2, the second driving signal input m2 of the inner-outer circulation motor M of M is also connected with the open circuit
Test side Motor Diag Open AD.
In the present embodiment, the open circuit diagnostic circuit 20 is additionally provided with the first drive for being connected to the inner-outer circulation motor M
Motor divider resistance R1 between dynamic signal input part m1 and ground；The motor divider resistance R1 is set to the air-conditioner controller
On Internal PCB.
The second driving signal input m2 of the inner-outer circulation motor M and the open circuit of the MCU Main Processing Unit 10 detect
The first protective circuit of voltage regulation 21 is connected between the Motor Diag Open AD of end；First protective circuit of voltage regulation 21 is equipped with the
Two pole of the first pressure stabilizing of one protective resistance R2, Opposite direction connection between the open circuit test side Motor Diag Open AD and ground
The pipe D1 and first filter capacitor C1 in parallel with the first zener diode D1；The first protective resistance R2 is series at described
Between the second driving signal input m2 of inner-outer circulation motor M and the negative pole end of the first zener diode D1.
Connect between the collector c of the second driving signal input m2 and the triode Q1 of the inner-outer circulation motor M
It is connected to the second protective circuit of voltage regulation 22；Second protective circuit of voltage regulation 22 is equipped with Opposite direction connection in the current collection of the triode Q1
The second zener diode D2 between pole c and ground and the second driving signal input m2 for being connected to the inner-outer circulation motor M
With the second protective resistance R3 of the negative pole end of the second zener diode D2.
The open circuit of the base stage b of the triode Q1 and the MCU Main Processing Unit 10 detects enable end Motor Diag
Third protective resistance R4 is connected between Open_EN.
In the present embodiment, as MCU Main Processing Unit 10 output FRE_Ctrl=1, REC_Ctrl=0, pass through motor driven
Chip BD16910 driving, loop direction operates motor M outward.When MCU Main Processing Unit 10 exports FRE_Ctrl=0, REC_Ctrl
Loop direction operates inside by=1, motor M.When MCU exports FRE_Ctrl=1, REC_Ctrl=1, Motor Diag Open_EN
=1, motor M enter diagnosis tool formula, at this moment the interior circulation driving signal output end REC_Out of motor drive ic BD16910 and
Outer circulation driving signal output end FRE_Out exports a high resistant signal, and motor drive ic BD16910 stops driving.At this time
MCU Main Processing Unit 10 starts to detect, and MCU Main Processing Unit 10 signals to control triode Q1, when the open circuit of MCU Main Processing Unit 10 is examined
Enable end Motor Diag Open_EN output low level (0V), triode Q1 conducting are surveyed, M obtains the operating voltage VCC of 5V, by
In the voltage of triode Q1 saturation conduction, therefore A point be also close to 5V, if motor M open a way, i.e., as shown in Fig. 2, motor driven core
Piece BD16910 and motor M is disconnected, and since the voltage of so A point is as B point, therefore MCU detects Motor Diag Open AD net
Network signal (i.e. B point voltage) be also be 5V, it is contemplated that figure 2 above element performance under high/low temperature has difference, needs to consider public affairs
Poor 0.5V, therefore if detect Motor Diag Open AD detect voltage be (4.5V, 5V) this range it may determine that
For motor open circuit.If motor is not opened a way, in the diagnostic mode, since armature of direct current motor resistance is smaller, commonly use interior
Outer circulation armature resistance is generally 30 Europe between 40 Europe, therefore 2000 Europe of resistance value of motor divider resistance R1 adds and powers on
The resistance of machine is about 2.04K, we are just R1 this equivalent resistance1, therefore if motor M does not open a way, in diagnostic mode
Under, resistance R11It can be divided with the second protective resistance R3, the second driving signal input of the motor M according to voltage divider principle
The voltage for holding m2 is 5* (2.04/ (2.04+10))=0.85V, since this voltage is less than the first zener diode D1 pressure drop
The voltage of 5.6V, the second driving signal input m2 are equal to the voltage of open circuit test side Motor Diag Open AD, consider Fig. 2
Element performance under high/low temperature has difference, needs to be arranged tolerance, and current tolerance is set as 0.3V, i.e., if in diagnostic mode
Under, the voltage that the open circuit test side Motor Diag Open AD of MCU Main Processing Unit is detected is in (0.55V, 1.15V) condition
Under, it can judge that motor is to connect in the normal mode.
If in the diagnostic mode, triode Q1 is not turned on, the counter electromotive force of normal driving motor is damaged in order to prevent
The second protective resistance R3 and the second zener diode D2 (voltage-stabiliser tube 5.6V) is arranged in bad triode Q1 or MCU chip here,
It prevents counter electromotive force of motor from damaging triode Q1, the first protective resistance R2 and the first zener diode D1 (voltage-stabiliser tube 5.6V), prevents
Only counter electromotive force of motor damages MCU.
In summary shown in, if MCU Main Processing Unit provides control signal FRE_Ctrl=1, REC_Ctrl=1, Motor
Diag Open_EN=1,
When Motor Diag Open AD end voltage is between (4.5V, 5V), motor M opens a way.
When Motor Diag Open AD end voltage is between (0.55V, 1.15V), motor M is normal.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (8)
1. a kind of inner-outer circulation motor open detection circuit of air-conditioner controller, the first driving signal of the inner-outer circulation motor
Input terminal and the second driving signal input are separately connected the interior circulation driving signal output end and outer circulation of motor drive ic
Driving signal output end, which is characterized in that including MCU Main Processing Unit, it is defeated that the MCU Main Processing Unit is equipped with interior loop control signal
Outlet and outer circulation control signal output, the interior loop control signal output end and outer circulation control signal output difference
Connect the interior loop control signal input part and outer circulation control signal input of the motor drive ic；
The MCU Main Processing Unit is additionally provided with open circuit detection enable end and open circuit test side, the open circuit detection enable end and open circuit
Test side connection open circuit diagnostic circuit, the open circuit diagnostic circuit are equipped with triode；The emitter of the triode accesses circuit
Power supply, base stage connect the open circuit and detect enable end, and collector connects the second driving signal of the inner-outer circulation motor
Input terminal, the second driving signal input of the inner-outer circulation motor are also connected with the open circuit test side.
2. a kind of inner-outer circulation motor open detection circuit of air-conditioner controller as described in claim 1, it is characterised in that: institute
State the motor that open circuit diagnostic circuit is additionally provided between the first driving signal input and ground for being connected to the inner-outer circulation motor
Divider resistance；The resistance value of the motor divider resistance is 2000 Ω.
3. a kind of inner-outer circulation motor open detection circuit of air-conditioner controller as claimed in claim 2, it is characterised in that: institute
Divider resistance is stated on the Internal PCB of the air-conditioner controller.
4. a kind of inner-outer circulation motor open detection circuit of air-conditioner controller as described in claim 1, it is characterised in that: institute
It states and is connected with first between the second driving signal input of inner-outer circulation motor and the open circuit test side of the MCU Main Processing Unit
Protective circuit of voltage regulation.
5. a kind of inner-outer circulation motor open detection circuit of air-conditioner controller as claimed in claim 4, it is characterised in that: institute
State first pressure stabilizing of first protective circuit of voltage regulation equipped with the first protective resistance, Opposite direction connection between the open circuit test side and ground
Diode and first filter capacitor in parallel with first zener diode；First protective resistance is series at described inside and outside
Between second driving signal input of circulation motor and the negative pole end of first zener diode.
6. a kind of inner-outer circulation motor open detection circuit of air-conditioner controller as described in claim 1, it is characterised in that: institute
It states and is connected with the second voltage-stabilizing protection between the second driving signal input of inner-outer circulation motor and the collector of the triode
Circuit.
7. a kind of inner-outer circulation motor open detection circuit of air-conditioner controller as claimed in claim 6, it is characterised in that: institute
State the second protective circuit of voltage regulation equipped with second zener diode of the Opposite direction connection between the collector and ground of the triode and
It is connected to the second of the second driving signal input of the inner-outer circulation motor and the negative pole end of second zener diode
Protective resistance.
8. a kind of inner-outer circulation motor open detection circuit of air-conditioner controller as described in claim 1, it is characterised in that: institute
It states and is connected with third protective resistance between the base stage of triode and the open circuit detection enable end of the MCU Main Processing Unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611208609.3A CN106842019B (en) | 2016-12-23 | 2016-12-23 | A kind of inner-outer circulation motor open detection circuit of air-conditioner controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611208609.3A CN106842019B (en) | 2016-12-23 | 2016-12-23 | A kind of inner-outer circulation motor open detection circuit of air-conditioner controller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106842019A CN106842019A (en) | 2017-06-13 |
| CN106842019B true CN106842019B (en) | 2019-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611208609.3A Active CN106842019B (en) | 2016-12-23 | 2016-12-23 | A kind of inner-outer circulation motor open detection circuit of air-conditioner controller |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108050083A (en) * | 2017-12-07 | 2018-05-18 | 惠州市德赛西威汽车电子股份有限公司 | A kind of band protection and the water pump driving circuit of diagnostic function |
| CN113687225B (en) * | 2021-08-13 | 2024-04-19 | 江铃汽车股份有限公司 | Folding motor full diagnosis circuit of outer rearview mirror |
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| CN201489073U (en) * | 2009-03-26 | 2010-05-26 | 深圳市凌宝电子有限公司 | Improved open circuit detection circuit of CO sensor |
| CN102967793A (en) * | 2012-11-23 | 2013-03-13 | 深圳市航盛电子股份有限公司 | Open-circuit short-circuit detection circuit of car-mounted terminal antenna |
| CN203027172U (en) * | 2012-12-17 | 2013-06-26 | 芜湖博耐尔汽车电气***有限公司 | Direct-current motor driving circuit |
| CN203588068U (en) * | 2013-11-18 | 2014-05-07 | 惠州华阳通用电子有限公司 | Low-side drive output feedback detection device for air controller |
| CN205562760U (en) * | 2016-02-05 | 2016-09-07 | 杭州益泰科汽车电器有限公司 | On -vehicle air conditioner circulating motor dysfunction detection device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016179707A (en) * | 2015-03-23 | 2016-10-13 | ダイハツ工業株式会社 | Vehicular air conditioner |
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2016
- 2016-12-23 CN CN201611208609.3A patent/CN106842019B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201489073U (en) * | 2009-03-26 | 2010-05-26 | 深圳市凌宝电子有限公司 | Improved open circuit detection circuit of CO sensor |
| CN102967793A (en) * | 2012-11-23 | 2013-03-13 | 深圳市航盛电子股份有限公司 | Open-circuit short-circuit detection circuit of car-mounted terminal antenna |
| CN203027172U (en) * | 2012-12-17 | 2013-06-26 | 芜湖博耐尔汽车电气***有限公司 | Direct-current motor driving circuit |
| CN203588068U (en) * | 2013-11-18 | 2014-05-07 | 惠州华阳通用电子有限公司 | Low-side drive output feedback detection device for air controller |
| CN205562760U (en) * | 2016-02-05 | 2016-09-07 | 杭州益泰科汽车电器有限公司 | On -vehicle air conditioner circulating motor dysfunction detection device |
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| CN106842019A (en) | 2017-06-13 |
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