CN107167745B - A kind of air-conditioning actuator voltage power sense circuit and method - Google Patents
A kind of air-conditioning actuator voltage power sense circuit and method Download PDFInfo
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- CN107167745B CN107167745B CN201710250895.8A CN201710250895A CN107167745B CN 107167745 B CN107167745 B CN 107167745B CN 201710250895 A CN201710250895 A CN 201710250895A CN 107167745 B CN107167745 B CN 107167745B
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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
- G01R31/40—Testing power supplies
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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
- G01R31/40—Testing power supplies
- G01R31/42—AC power supplies
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Abstract
The invention discloses a kind of air-conditioning actuator voltage power sense circuit and method, the circuit includes detection unit and processing unit, and detection unit includes positive test side, negative test side, the first one-way circuit, energy storage circuit, pressure-controlled spacing output circuit；Positive test side is successively connected to negative test side via first one-way circuit, energy storage circuit；Pressure-controlled spacing output circuit is in parallel with energy storage circuit, and the output end of pressure-controlled spacing output circuit is connect with processing unit；The present invention does not need to determine the specific value of input voltage, but it is combined first with one-way circuit and energy storage circuit, one-way circuit is connected entirely under d.c. current, in alternating current, turn-on frequency is consistent with ac frequency, the voltage of energy storage circuit can reflect the type of input voltage and the frequency of alternating current, then the voltage detection signal of the voltage type of reflection energy storage circuit and the frequency of alternating current, the configuration of the present invention is simple are exported by pressure-controlled spacing output circuit, it is at low cost, high reliablity.
Description
Technical field
The present invention relates to electric automobiles more particularly to a kind of air-conditioning actuator voltage power sense circuits and method.
Background technique
In the electronic refrigerator vehicle air-conditioning driver of dual power supply, refrigerator vehicle air-conditioning driver need and meanwhile support direct current with
And the input of electric main, it is therefore desirable to detect the frequency when type and exchange input of input power.Existing solution party
Case is to carry out partial pressure sampling using high resistant, but this scheme is unable to satisfy vehicle high-voltage insulating requirements, can reduce vehicle insulation.
Such to solve the problems, such as, another scheme improves this scheme, first carry out high resistance sectional pressure reuse linear optical coupling carry out every
From sampling, this scheme is at high cost due to being caused using linear optical coupling.
Summary of the invention
The technical problem to be solved in the present invention is that in view of the above drawbacks of the prior art, providing a kind of air-conditioning driver
Voltage power sense circuit and method.
The technical solution adopted by the present invention to solve the technical problems is: constructing a kind of air-conditioning actuator voltage source detection electricity
Road, is applied to dual power supply air-conditioning driver, including detection unit and processing unit, and the detection unit includes being used for and driver
The positive test side of the anode connection of voltage source, the negative test side for being connect with the cathode in actuator voltage source, the first unidirectional electricity
Road, energy storage circuit, pressure-controlled spacing output circuit；The positive test side is successively via first one-way circuit, the accumulation of energy
Circuit connection is to the negative test side；The pressure-controlled spacing output circuit is in parallel with the energy storage circuit, and described pressure-controlled
The output end of spacing output circuit is connect with the processing unit；
Wherein, first one-way circuit is at direct current or the actuator voltage source in the actuator voltage source
It is connected when the positive axis of alternating current, and ends when the actuator voltage source is in the negative semiaxis of alternating current；The storage
It can circuit accumulation of energy and generation and positively related voltage in actuator voltage source when first one-way circuit is connected；The pressure
The voltage output voltage detection signal that control formula spacing output circuit is generated according to the energy storage circuit；The processing unit is used for root
According to the voltage detection signal of the pressure-controlled spacing output circuit output determine the actuator voltage source type and
Power supply state, and the frequency of alternating current is determined when determining that the actuator voltage source is alternating current.
In air-conditioning actuator voltage power sense circuit of the present invention,
The voltage detection signal includes that the pressure-controlled spacing output circuit is not more than in the voltage of the energy storage circuit
The first level signal for being exported when the first preset value and/or when the voltage of the energy storage circuit is greater than first preset value it is defeated
Second electrical level signal out；
The processing unit is used for the first level signal and/or second according to the pressure-controlled spacing output circuit output
Level signal determines the type and power supply state in the actuator voltage source, and is determining the actuator voltage source for friendship
The frequency of alternating current is determined when galvanic electricity.
In air-conditioning actuator voltage power sense circuit of the present invention, the processing unit includes:
Power down determines subelement, for detecting that the pressure-controlled spacing output circuit persistently exports first level
When signal, actuator voltage source power down is determined；
Direct current determines subelement, for detecting that it is electric that the pressure-controlled spacing output circuit persistently exports described second
When ordinary mail, determine that the type in the actuator voltage source is direct current；
Alternating current and its frequency determine subelement, for detecting the pressure-controlled spacing output circuit interval output institute
When stating the first level signal, the second electrical level signal, determine that the type in the actuator voltage source is alternating current, and will be described
Frequency of the switching frequency of first level signal and the second electrical level signal as the alternating current.
In air-conditioning actuator voltage power sense circuit of the present invention, the detection circuit further includes the second unidirectional electricity
Road, the negative test side connect the positive test side via second one-way circuit；Second one-way circuit is in the drive
Dynamic device voltage source ends for direct current or when the actuator voltage source is in the positive axis of alternating current, and in the drive
Dynamic device voltage source is connected when being in the negative semiaxis of alternating current.
In air-conditioning actuator voltage power sense circuit of the present invention, the pressure-controlled spacing output circuit includes:
Voltage turn-on sub-circuit is more than to enter after the second preset value from off state for the voltage in the energy storage circuit
On state；
Isolation output sub-circuit, for exporting low level or high electricity when the voltage turn-on sub-circuit is in off state
The first flat level signal exports high level or low level second electricity when the voltage turn-on sub-circuit is in the conductive state
Ordinary mail number.
In air-conditioning actuator voltage power sense circuit of the present invention, the air-conditioning actuator voltage power sense circuit
It further include the first current-limiting resistance, first one-way circuit includes first diode, and second one-way circuit includes the two or two
Pole pipe, the energy storage circuit include capacitor, and the voltage turn-on sub-circuit includes the second current-limiting resistance, third diode, described
Isolation output sub-circuit includes photo-coupler, pull down resistor, and the photo-coupler includes the 4th diode and photosensitive semiconductor pipe；
The anode of second diode connects the negative test side, and the cathode of second diode is via described first
Current-limiting resistance is connected to the positive test side, and the anode of the first diode is connected to the cathode of second diode, institute
The cathode of first diode is stated via negative test side described in the capacitance connection, the cathode of the first diode is also via described
Second current-limiting resistance is connected to the cathode of third diode, and the anode of the third diode is connected to the 4th diode
Anode, the cathode of the 4th diode connect the negative test side, and the transmitting collection of the photosensitive semiconductor pipe connects the place
It manages unit and is grounded via the pull down resistor, the collector of the photosensitive semiconductor pipe connects internal electric source.
The air-conditioning actuator voltage source detection method based on the detection circuit that the invention also discloses a kind of, comprising:
According to the type in actuator voltage source and state output voltage detection signal；
According to the voltage detection signal, the type and power supply state in the actuator voltage source are determined, and true
The fixed actuator voltage source determines the frequency of the alternating current when being alternating current.
In the detection method of air-conditioning actuator voltage of the present invention source, the voltage detection signal includes the first level
Signal and/or second electrical level signal；
The type for determining the actuator voltage source includes: to determine and drive when detecting lasting output second electrical level signal
The type of dynamic device voltage source is direct current；When detecting interval output the first level signal, second electrical level signal, driving is determined
The type of device voltage source is alternating current.
In the detection method of air-conditioning actuator voltage of the present invention source, the power supply shape in the actuator voltage source is determined
State includes: to determine the power down of actuator voltage source when detecting the first level signal of lasting output.
In the detection method of air-conditioning actuator voltage of the present invention source, determine the alternating current frequency include: by
Frequency of the switching frequency of first level signal and the second electrical level signal as alternating current.
Implement air-conditioning actuator voltage power sense circuit and method of the invention, has the advantages that the present invention
The specific value of input voltage is not needed to determine, but is combined first with one-way circuit and energy storage circuit, one-way circuit is in direct current
The lower full conducting of electricity, in alternating current, turn-on frequency is consistent with ac frequency, and the voltage of energy storage circuit can reflect input voltage
Type and alternating current frequency, then by pressure-controlled spacing output circuit export reflection energy storage circuit voltage type and
The voltage detection signal of the frequency of alternating current, the configuration of the present invention is simple is at low cost, high reliablity.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings:
Fig. 1 is that the circuit of the detection unit in the preferred embodiment of air-conditioning actuator voltage power sense circuit of the invention is former
Reason figure.
Specific embodiment
To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawing
Give exemplary embodiments of the invention.But the invention can be realized in many different forms, however it is not limited to this paper institute
The embodiment of description.On the contrary, purpose of providing these embodiments is make it is more thorough and comprehensive to the disclosure.
It should be noted that herein presented word " equal ", " identical " " simultaneously " or other similar term, no
Be limited to it is absolute equal or identical in mathematical term, implement this patent described in right when, can be close on engineering significance
Or within an acceptable error range.Word " connected " or " connection " or other similar term not only include by two
A entity is connected directly, and also includes being indirectly connected by having other entities beneficial to improvement.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.
" first ", " second " used in this specification etc. includes that the term of ordinal number can be used for illustrating various constituent elements,
But these constituent elements are not limited by these terms.It is only that using the purpose of these terms and distinguishes a constituent element
In other constituent elements.For example, first constituent element can be named as under the premise of not departing from interest field of the invention
Two constituent elements, similarly, the second constituent element can also be named as the first constituent element.This term of "and/or" includes
A certain item in the multiple related record projects of the combination of multiple correlation record projects.
For a better understanding of the technical solution of the present invention, in conjunction with appended figures and specific embodiments
Technical solution of the present invention is described in detail, it should be understood that the specific features in the embodiment of the present invention and embodiment are
To the detailed description of technical scheme, rather than the restriction to technical scheme, in the absence of conflict, this
Technical characteristic in inventive embodiments and embodiment can be combined with each other.
In preferred embodiment, air-conditioning actuator voltage power sense circuit includes detection unit and processing unit, the detection list
Member is connected to processing unit.With reference to Fig. 1, in preferred embodiment, the detection unit include: positive test side L1, negative test side L2,
First one-way circuit 100, the second one-way circuit 200, energy storage circuit 300, pressure-controlled spacing output circuit 400.Wherein, positive detection
End L1 is successively connected to negative test side L2 via first one-way circuit 100, energy storage circuit 300；Negative test side L2 is via institute
It states the second one-way circuit 200 and connects positive test side L1；Pressure-controlled spacing output circuit 400 is in parallel with energy storage circuit 300 and voltage-controlled
The output end VOUT of formula spacing output circuit 400 is connect with processing unit.
Wherein, positive test side L1 is used to connect with the anode in actuator voltage source, and negative test side L2 is used for and driver electricity
The cathode of potential source connects；First one-way circuit 100 is that direct current or actuator voltage source are in exchange in actuator voltage source
It is connected when the positive axis of electricity, and ends when actuator voltage source is in the negative semiaxis of alternating current；Second one-way circuit 200 exists
Actuator voltage source is ended for direct current or when actuator voltage source is in the positive axis of alternating current, and in driver electricity
Potential source is connected when being in the negative semiaxis of alternating current；Energy storage circuit 300 accumulation of energy and generation and drive when the first one-way circuit 100 is connected
The dynamic positively related voltage of device voltage source；The voltage output that pressure-controlled spacing output circuit 400 is generated according to the energy storage circuit 300
Voltage detection signal；The processing unit is used for the voltage detection signal according to the pressure-controlled spacing output circuit output
It determines the type and power supply state in actuator voltage source, and determines alternating current when determining that actuator voltage source is alternating current
Frequency.
In the present embodiment, the voltage detection signal includes electricity of the pressure-controlled spacing output circuit 400 in energy storage circuit 300
The first level signal is exported when pressure is no more than the first preset value and/or when the voltage of energy storage circuit 300 is greater than the first preset value
Export second electrical level signal；The processing unit is used for the first level signal exported according to pressure-controlled spacing output circuit 400
And/or second electrical level signal, determine the type and power supply state in actuator voltage source, and determining that actuator voltage source is
The frequency of alternating current is determined when alternating current.
It should be noted that theoretically, it (does not include peak value electricity occur that the first preset value, which can be the positive axis in alternating current,
At the time of pressure) when the voltage value that will will appear of energy storage circuit 300.In order to ensure reliability, it generally takes and is in just half in alternating current
The crest voltage of axis 1/3 to 2/3 when energy storage circuit 300 caused by voltage.For example, if the crest voltage of alternating current is
300V, it is proposed that the first preset value takes when alternating current voltage reaches the arbitrary value between 100-200V produced by energy storage circuit 300
Voltage.Herein it should be noted that voltage caused by energy storage circuit 300 is not only related with the voltage of alternating current, also with
The relating to parameters of itself, thus specific first preset value be how many will also according to selected energy storage circuit 300 specifically determine.With
For voltage caused by energy storage circuit 300 is as the first preset value when alternating current voltage reaches 100V, if the capacitor chosen
As energy storage circuit 300, then at the time of alternating current changes to 100V from 0V, voltage caused by capacitor is first default
Value.
Wherein, the processing unit includes:
Power down determines subelement, for detecting that pressure-controlled spacing output circuit 400 persistently exports the first level signal
When, determine the power down of actuator voltage source；Such as the first level signal is low level in the present embodiment.
Direct current determines subelement, for detect pressure-controlled spacing output circuit 400 persistently export second electrical level letter
Number when, determine actuator voltage source type be direct current；Such as second electrical level signal is high level in the present embodiment.
Alternating current and its frequency determine subelement, for detecting pressure-controlled spacing output circuit 400 interval output the
When one level signal, second electrical level signal, determine that the type in actuator voltage source is alternating current, and by the first level signal and the
Frequency of the switching frequency of two level signals as alternating current.
Wherein, pressure-controlled spacing output circuit 400 includes:
Voltage turn-on sub-circuit is more than to enter after the second preset value from off state for the voltage in energy storage circuit 300
On state；
Isolation output sub-circuit, for output low level or high level when voltage turn-on sub-circuit be in off state
First level signal exports high level or low level second electrical level signal when voltage turn-on sub-circuit is in the conductive state.
In preferred embodiment, the air-conditioning actuator voltage power sense circuit further includes the first current-limiting resistance R1, and first is single
It include first diode D1 to circuit 100, the second one-way circuit 200 includes the second diode D2, and energy storage circuit 300 includes capacitor
C1, voltage turn-on sub-circuit include the second current-limiting resistance R2, third diode ZD1, and isolation output sub-circuit includes photo-coupler
U1, pull down resistor R3, the photo-coupler U1 include the 4th diode and photosensitive semiconductor pipe；Preferably, third diode ZD1
For Zener diode, the 4th diode is light emitting diode.
The anode of the second diode D2 connects negative test side L2, and the cathode of the second diode D2 is via first limit
Leakage resistance R1 is connected to positive test side L1, and the anode of first diode D1 is connected to the cathode of the second diode D2, the one or two pole
The cathode of pipe D1 is via the negative test side L2 of capacitor C1 connection, and the cathode of first diode D1 is also via the second current-limiting resistance R2
It is connected to the cathode of third diode ZD1, the anode of third diode ZD1 is connected to the anode of the 4th diode, the four or two pole
The cathode of pipe connects negative test side L2, and the transmitting collection of photosensitive semiconductor pipe connects processing unit and connects via pull down resistor R3
The collector on ground, photosensitive semiconductor pipe connects internal electric source VCC.
It should be noted that second preset value of the present embodiment is one of the first preset value in its theoretical value range
Feasible numerical value.In fact, second preset value of the present embodiment is determined by the specific structure of the present embodiment, because of the present embodiment
The on and off of middle voltage turn-on sub-circuit is actually the on and off control of Zener diode, so the second preset value
Voltage value when being connected for third diode ZD1 on capacitor C1, it is clear that the second preset value is the pressure drop of resistance R2, light emitting diode
Conduction voltage drop, the sum of the conduction voltage drop of third diode ZD1.
It is understood that the circuit of photosensitive semiconductor pipe side is not limited to this, such as can also be substituted with pull-up resistor
The collector of photosensitive semiconductor pipe is connected processing unit by pull down resistor R3, at the same by the collector of photosensitive semiconductor pipe via
Pull-up resistor connects internal electric source VCC, the emitter ground connection of photosensitive semiconductor pipe.Furthermore it is also possible in two one-way circuits
Current-limiting resistance is respectively set.
The working principle of preferred embodiment is:
When there is single-phase AC voltage input, by taking sinusoidal voltage as an example, in positive axis, diode D2 is cut sinusoidal voltage
Only, sinusoidal voltage passes through current-limiting resistance R1, is carrying out halfwave rectifier by diode D1, carries out energy storage in C1, when C1 voltage foot
When enough high, third diode ZD1, photo-coupler U1 conducting will be punctured, output VOUT level is got higher, when input voltage amplitude reduces
When, the upper voltage of C1 reduces, and third diode ZD1 cannot be connected, photo-coupler U1 shutdown, and output VOUT is lower level；Sinusoidal electricity
When being pressed in negative semiaxis, diode D1 cut-off, D2 is connected, and photo-coupler U1 continues off state.To sum up, when there is single phase ac
When voltage input, VOUT is the pulse square wave signal of one with input signal same frequency.VOUT signal gives the place of processing unit
Device is managed, can be detected the frequency for whether having that exchange inputs and exchange inputs.When not having voltage input, photo-coupler U1 cannot
Shutdown, VOUT signal is a lasting low level signal.When input is direct current, C1 voltage is constant DC voltage, light
Coupler U1 is constantly on, and VOUT signal is a lasting high level signal.
Based on the same inventive concept, the air-conditioning actuator voltage source inspection based on the detection circuit that the invention also discloses a kind of
Survey method, method include:
S100, type and state output voltage detection signal according to actuator voltage source；
S200, according to the voltage detection signal, determine the type and power supply state in actuator voltage source, and true
Fixed driver voltage source determines the frequency of alternating current when being alternating current.
In the present embodiment, the voltage detection signal includes the first level signal and/or second electrical level signal；
Wherein it is determined that the type in actuator voltage source includes: to determine and drive when detecting lasting output second electrical level signal
The type of dynamic device voltage source is direct current；When detecting interval output the first level signal, second electrical level signal, driving is determined
The type of device voltage source is alternating current.
Wherein it is determined that the power supply state in actuator voltage source includes: when detecting the first level signal of lasting output, really
Fixed driver voltage source power down.
Wherein it is determined that the frequency of alternating current include: using the switching frequency of the first level signal and second electrical level signal as
The frequency of alternating current.
In conclusion implementing air-conditioning actuator voltage power sense circuit and method of the invention, have below beneficial to effect
Fruit: the present invention does not need to determine the specific value of input voltage, but combines first with one-way circuit and energy storage circuit, unidirectional electricity
Road is connected entirely under d.c. current, and in alternating current, turn-on frequency is consistent with ac frequency, and the voltage of energy storage circuit can reflect
The type of input voltage and the frequency of alternating current, then the voltage for reflecting energy storage circuit is exported by pressure-controlled spacing output circuit
The voltage detection signal of type and the frequency of alternating current, the configuration of the present invention is simple is at low cost, high reliablity.
The embodiment of the present invention is described with above attached drawing, but the invention is not limited to above-mentioned specific
Embodiment, the above mentioned embodiment is only schematical, rather than restrictive, those skilled in the art
Under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, it can also make very much
Form, all of these belong to the protection of the present invention.
Claims (10)
1. a kind of air-conditioning actuator voltage power sense circuit is applied to dual power supply air-conditioning driver, which is characterized in that including detection
Unit and processing unit, the detection unit include for actuator voltage source anode connect positive test side, be used for
The negative test side of the cathode connection in actuator voltage source, the first one-way circuit, energy storage circuit, pressure-controlled spacing output circuit；Institute
It states positive test side and is successively connected to the negative test side via first one-way circuit, the energy storage circuit；It is described pressure-controlled
Spacing output circuit is in parallel with the energy storage circuit, and the output end of the pressure-controlled spacing output circuit and the processing unit
Connection；
Wherein, first one-way circuit is connected when the actuator voltage source is direct current；Alternatively, the described first unidirectional electricity
Road is connected when the actuator voltage source is in the positive axis of alternating current, is in the negative of alternating current in the actuator voltage source
End when semiaxis；
The energy storage circuit when first one-way circuit is connected accumulation of energy and generate it is positively related with the actuator voltage source
Voltage；The voltage output voltage detection signal that the pressure-controlled spacing output circuit is generated according to the energy storage circuit；The place
Reason unit is used to determine the actuator voltage according to the voltage detection signal of the pressure-controlled spacing output circuit output
The type and power supply state in source, and the frequency of alternating current is determined when determining that the actuator voltage source is alternating current.
2. air-conditioning actuator voltage power sense circuit according to claim 1, which is characterized in that the voltage detection signal
The first electricity exported including the pressure-controlled spacing output circuit when the voltage of the energy storage circuit is not more than the first preset value
Ordinary mail number and/or the second electrical level signal exported when the voltage of the energy storage circuit is greater than first preset value；
The processing unit is used for the first level signal and/or second electrical level according to the pressure-controlled spacing output circuit output
Signal determines the type and power supply state in the actuator voltage source, and is determining that the actuator voltage source is alternating current
When determine the frequency of alternating current.
3. air-conditioning actuator voltage power sense circuit according to claim 2, which is characterized in that the processing unit packet
It includes:
Power down determines subelement, for detecting that the pressure-controlled spacing output circuit persistently exports first level signal
When, determine actuator voltage source power down；
Direct current determines subelement, for detecting that the pressure-controlled spacing output circuit persistently exports second electrical level letter
Number when, determine the actuator voltage source type be direct current；
Alternating current and its frequency determine subelement, for detecting the pressure-controlled spacing output circuit interval output described the
When one level signal, the second electrical level signal, determine that the type in the actuator voltage source is alternating current, and by described first
Frequency of the switching frequency of level signal and the second electrical level signal as the alternating current.
4. air-conditioning actuator voltage power sense circuit according to claim 2, which is characterized in that the detection circuit is also wrapped
The second one-way circuit is included, the negative test side connects the positive test side via second one-way circuit；Described second is unidirectional
Circuit ends for direct current or when the actuator voltage source is in the positive axis of alternating current in the actuator voltage source,
And it is connected when the actuator voltage source is in the negative semiaxis of alternating current.
5. air-conditioning actuator voltage power sense circuit according to claim 4, which is characterized in that the pressure-controlled isolation is defeated
Circuit includes: out
Voltage turn-on sub-circuit is more than to enter conducting from off state after the second preset value for the voltage in the energy storage circuit
State；
Isolation output sub-circuit, for output low level or high level when the voltage turn-on sub-circuit be in off state
First level signal exports high level or low level second electrical level letter when the voltage turn-on sub-circuit is in the conductive state
Number.
6. air-conditioning actuator voltage power sense circuit according to claim 5, which is characterized in that the air-conditioning driver electricity
Potential source detection circuit further includes the first current-limiting resistance, and first one-way circuit includes first diode, the described second unidirectional electricity
Road includes the second diode, and the energy storage circuit includes capacitor, and the voltage turn-on sub-circuit includes the second current-limiting resistance, third
Diode, the isolation output sub-circuit include photo-coupler, pull down resistor, and the photo-coupler includes the 4th diode and light
Sensitive semiconductor pipe；
The anode of second diode connects the negative test side, and the cathode of second diode is via first current limliting
Resistance is connected to the positive test side, and the anode of the first diode is connected to the cathode of second diode, and described
The cathode of one diode is via negative test side described in the capacitance connection, and the cathode of the first diode is also via described second
Current-limiting resistance is connected to the cathode of third diode, and the anode of the third diode is being connected to the 4th diode just
Pole, the cathode of the 4th diode connect the negative test side, and the transmitting collection of the photosensitive semiconductor pipe connects the processing
It unit and is grounded via the pull down resistor, the collector of the photosensitive semiconductor pipe connects internal electric source.
7. a kind of air-conditioning actuator voltage source detection method based on detection circuit described in claim 1, which is characterized in that packet
It includes:
According to the type in actuator voltage source and state output voltage detection signal；
According to the voltage detection signal, the type and power supply state in the actuator voltage source are determined, and determining
State the frequency that the alternating current is determined when actuator voltage source is alternating current.
8. air-conditioning actuator voltage according to claim 7 source detection method, which is characterized in that the voltage detection signal
Including the first level signal and/or second electrical level signal；
The type for determining the actuator voltage source includes: to determine driver when detecting lasting output second electrical level signal
The type of voltage source is direct current；When detecting interval output the first level signal, second electrical level signal, driver electricity is determined
The type of potential source is alternating current.
9. air-conditioning actuator voltage according to claim 8 source detection method, which is characterized in that determine the driver electricity
The power supply state of potential source includes: to determine the power down of actuator voltage source when detecting the first level signal of lasting output.
10. air-conditioning actuator voltage according to claim 8 source detection method, which is characterized in that determine the alternating current
Frequency include: using the switching frequency of first level signal and the second electrical level signal as the frequency of alternating current.
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| CN201710250895.8A CN107167745B (en) | 2017-04-14 | 2017-04-14 | A kind of air-conditioning actuator voltage power sense circuit and method |
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| CN201710250895.8A CN107167745B (en) | 2017-04-14 | 2017-04-14 | A kind of air-conditioning actuator voltage power sense circuit and method |
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| CN107167745B true CN107167745B (en) | 2019-08-13 |
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| CN111090055A (en) * | 2019-12-27 | 2020-05-01 | 珠海格力电器股份有限公司 | Abnormal power failure detection circuit and method |
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| CN105259516A (en) * | 2015-11-11 | 2016-01-20 | 漳州科华技术有限责任公司 | A back-up type UPS input switch abnormity detection apparatus |
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2017
- 2017-04-14 CN CN201710250895.8A patent/CN107167745B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103701303A (en) * | 2013-12-29 | 2014-04-02 | 哈尔滨工业大学 | Switching power supply with testability function and testing method thereof |
| CN103728572A (en) * | 2014-01-10 | 2014-04-16 | 矽力杰半导体技术(杭州)有限公司 | Load test method and test circuit and switching power supply utilizing same |
| CN105137153A (en) * | 2015-08-21 | 2015-12-09 | 广东易事特电源股份有限公司 | Current detection circuit of switch power supply and switch power supply |
| CN105259516A (en) * | 2015-11-11 | 2016-01-20 | 漳州科华技术有限责任公司 | A back-up type UPS input switch abnormity detection apparatus |
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| CN107167745A (en) | 2017-09-15 |
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