CN205643661U - Undervoltage power detection device and have its air conditioner - Google Patents
Undervoltage power detection device and have its air conditioner Download PDFInfo
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- CN205643661U CN205643661U CN201620320449.0U CN201620320449U CN205643661U CN 205643661 U CN205643661 U CN 205643661U CN 201620320449 U CN201620320449 U CN 201620320449U CN 205643661 U CN205643661 U CN 205643661U
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Abstract
The utility model discloses an undervoltage power detection device and have its air conditioner, undervoltage power detection device includes: the power detecting end is used for connecting alternating current power supply, opto -coupler detection module's input links to each other with the power detecting end, and opto -coupler detection module includes the opto -coupler chip, and opto -coupler detection module passes through opto -coupler chip assay alternating current power supply's voltage state to voltage state according to alternating current power supply generates the detected signal, control module links to each other with opto -coupler detection module's output, and control module judges according to the detected signal whether under -voltage alternating current power supply's voltage is to send out police dispatch and accuse information when the voltage of judging alternating current power supply is under -voltage, thereby whether can effectively detect the power through opto -coupler detection module under -voltage, improve product operational reliability, can effectively protect the product and accuse information through a police dispatch, promote the product quality.
Description
Technical field
The present invention relates to air-conditioner technical field, particularly to a kind of line under-voltage detection device and a kind of air-conditioner with it.
Background technology
In electronic product, each parts have certain limit requirement to running voltage, if beyond its operating voltage range, being easily caused product failure, the most accidents caused.Power sense circuit in correlation technique typically uses operational amplifier to realize comparator function, to detect the voltage of power supply.But, correlation technique has the drawback that, circuit structure is complicated.
Therefore, correlation technique needs to improve.
Summary of the invention
It is contemplated that one of technical problem solved the most to a certain extent in correlation technique.To this end, it is an object of the present invention to propose a kind of line under-voltage detection device, it is the most under-voltage that this device can effectively detect power supply, improves product operational reliability.
Further object is that a kind of air-conditioner of proposition.
For reaching above-mentioned purpose, a kind of line under-voltage detection device that one aspect of the present invention embodiment proposes, including: power detecting end, described power detecting end is used for connecting alternating current power supply；Optocoupler detection module, the input of described optocoupler detection module is connected with described power detecting end, described optocoupler detection module includes opto-coupler chip, described optocoupler detection module detects the voltage status of described alternating current power supply by described opto-coupler chip, and generates detection signal according to the voltage status of described alternating current power supply；Control module, described control module is connected with the outfan of described optocoupler detection module, according to described detection signal, described control module judges that the voltage of described alternating current power supply is the most under-voltage, and the information that gives a warning when judging the under-voltage of described alternating current power supply.
The line under-voltage detection device proposed according to embodiments of the present invention; voltage status by optocoupler detection module detection alternating current power supply; and generate detection signal according to the voltage status of alternating current power supply; and then according to detection signal, control module judges that the voltage of alternating current power supply is the most under-voltage; and when judging the under-voltage of alternating current power supply; give a warning information; thus; it is the most under-voltage that this device can effectively detect power supply by optocoupler detection module; improve product operational reliability; and can effectively protect product, improving product quality by the information of giving a warning.
According to one embodiment of present invention, described optocoupler detection module also includes: rectification unit, and described rectification unit is connected with described power detecting end and carries out rectification with the voltage to described alternating current power supply；First resistance, described first resistor coupled in parallel is between first pin and the second pin of described opto-coupler chip, wherein, the three-prong of described opto-coupler chip is connected with default power supply, and the 4th pin of described opto-coupler chip is connected with described control module as the outfan of described optocoupler detection module.
According to one embodiment of present invention, described power detecting end has first input end and the second input terminal, described rectification unit includes the first diode, the anode of described first diode is connected with described first input end, the negative electrode of described first diode is connected with the first pin of described opto-coupler chip, and described second input terminal is connected with the second pin of described opto-coupler chip.
According to one embodiment of present invention, described optocoupler detection module also includes: the second diode, and the negative electrode of described second diode is connected with the first pin of described opto-coupler chip, and the anode of described second diode is connected with the second pin of described opto-coupler chip.
According to one embodiment of present invention, described optocoupler detection module also includes: the second resistance, and described second resistance is connected between described first diode and the first pin of described opto-coupler chip.
According to one embodiment of present invention, described optocoupler detection module also includes: filter unit, and described filter unit is connected with the 4th pin of described opto-coupler chip, is filtered with the described detection signal detection signal exporting optocoupler detection module.
According to one embodiment of present invention, described filter unit includes: the 3rd resistance, and described one end of 3rd resistance is connected with the 4th pin of described opto-coupler chip, the other end ground connection of described 3rd resistance；First electric capacity, one end of described first electric capacity is connected with the 4th pin of described opto-coupler chip, the other end ground connection of described first electric capacity.
According to one embodiment of present invention, the 4th pin of described opto-coupler chip is connected with described control module also by the 4th resistance.
For reaching above-mentioned purpose, a kind of air-conditioner that another aspect of the present invention embodiment proposes, including described line under-voltage detection device.
The air-conditioner proposed according to embodiments of the present invention, can effectively detect power supply by optocoupler detection module the most under-voltage, improves product operational reliability, and can effectively protect product, improving product quality by the information of giving a warning.
Accompanying drawing explanation
Fig. 1 is the block diagram of line under-voltage detection device according to embodiments of the present invention；
Fig. 2 is the circuit theory diagrams of line under-voltage detection device according to an embodiment of the invention；
The waveform diagram of signal is detected when Fig. 2 a is the most under-voltage；
The waveform diagram of signal is detected when Fig. 2 b is the most under-voltage；And
Fig. 3 is the flow chart of the under-voltage detection method of line under-voltage detection device according to an embodiment of the invention.
Reference:
Power detecting end 1, optocoupler detection module 2 and control module 3；
Opto-coupler chip IC1, rectification unit the 20, first resistance R1, the sub-IN1 of first input end, the second input terminal IN2, the first diode D1, the second diode D2, the second resistance R2, filter unit the 21, the 3rd resistance R3, the first electric capacity C1 and the 4th resistance R4.
Detailed description of the invention
Embodiments of the invention are described below in detail, and the example of described embodiment is shown in the drawings, and the most same or similar label represents same or similar element or has the element of same or like function.The embodiment described below with reference to accompanying drawing is exemplary, it is intended to is used for explaining the present invention, and is not considered as limiting the invention.
Below with reference to the accompanying drawings the line under-voltage detection device that the embodiment of the present invention proposes and the air-conditioner with it are described in detail.
Fig. 1 is the block diagram of line under-voltage detection device according to embodiments of the present invention.As it is shown in figure 1, this line under-voltage detection device includes: power detecting end 1, optocoupler detection module 2 and control module 3.
Wherein, power detecting end 1 is used for connecting alternating current power supply V；The input of optocoupler detection module 2 is connected with power detecting end 1, and optocoupler detection module 2 includes opto-coupler chip IC1, and optocoupler detection module 2 is by the voltage status of opto-coupler chip IC1 detection alternating current power supply V, and generates detection signal according to the voltage status of alternating current power supply V；Control module 3 is connected with the outfan of optocoupler detection module 2, and according to detection signal, control module 3 judges that the voltage of alternating current power supply V is the most under-voltage, and the information that gives a warning when judging the under-voltage of alternating current power supply V.
That is, control module 3 is after receiving the detection signal of output of optocoupler detection module 2, i.e. can determine whether whether the voltage of alternating current power supply V exists undervoltage condition, if there is undervoltage condition, control module 3 then gives a warning information, this warning message is provided to the protection circuit of product so that product is protected by protection circuit, and this warning message is also provided to the cue circuit of product to be pointed out to user by cue circuit, it is thus possible to effectively detection power supply is the most under-voltage, and effectively protect product, improve product operation stability, improving product quality.
According to one embodiment of present invention, control module 3 is judging that the detection signal each working cycle in multiple continuous working cycle judges that the voltage of alternating current power supply V is the most under-voltage when there is high level or rising edge；Control module 3 is judging that detection signal at least one working cycle in multiple continuous working cycle judges the under-voltage of alternating current power supply V when there is low level.Wherein, working cycle can be a cycle of the alternating current that alternating current power supply V provides.
Specifically, as it is shown on figure 3, according to following steps, control module 3 can judge whether the voltage of alternating current power supply V is in under-voltage condition:
S1: judge whether N continuous time detects rising edge or high level to control module 3.
Wherein, N is the integer more than or equal to 1, and N can be determined according to reality application and result of the test.
If it is, perform step S2；If it is not, then perform step S3.
The voltage of S2: alternating current power supply V is the most under-voltage.
The under-voltage of S3: alternating current power supply V, control module 3 gives a warning information.
Describing the concrete structure of optocoupler detection module 2 of inventive embodiments, operation principle below in conjunction with Fig. 2, Fig. 2 a and Fig. 2 b, wherein, alternating current power supply V can be 220V civil power.
According to one embodiment of present invention, as in figure 2 it is shown, optocoupler detection module 2 also includes: rectification unit 20 and the first resistance R1.
Wherein, rectification unit 20 is connected with power detecting end 1 and carries out rectification with the voltage to alternating current power supply V；First resistance R1 is connected in parallel between the first pin A of opto-coupler chip IC1 and the second pin B, wherein, the three-prong C of opto-coupler chip IC1 is connected with default power supply VCC, and the 4th pin D of opto-coupler chip IC4 is connected with control module 3 as the outfan of optocoupler detection module 2.
It should be noted that the type selecting of the first resistance R1 is directly connected to the on or off of opto-coupler chip IC1, thus affect under-voltage detection, and opto-coupler chip IC1 is for controlling and buffer action.If the voltage at the first resistance R1 two ends is less than opto-coupler chip IC1 forward running voltage, then the input unit of opto-coupler chip IC1 cannot be luminous, and then the output unit cut-off of opto-coupler chip IC1, the 4th pin D output low level of opto-coupler chip IC4；If the voltage at the first resistance R1 two ends is higher than opto-coupler chip IC1 forward running voltage, then the input unit of opto-coupler chip IC1 is luminous, and then the output unit conducting of opto-coupler chip IC1, and the 4th pin D of opto-coupler chip IC4 exports high level.
Specifically, if the voltage peak of alternating current is less than predeterminated voltage such as 198V, then illustrate that this alternating current is under-voltage, whereas if the voltage peak of alternating current is higher than predeterminated voltage, then illustrate that this alternating current is normal.Thus, when control module 3 N continuous time detects rising edge or high level, illustrating that the voltage of alternating current power supply V exists the situation higher than predeterminated voltage, control module 3 can determine whether that alternating current power supply V is normal；When control module 3 is continuously detected low level, illustrating that the voltage of alternating current power supply V is always below predeterminated voltage, control module 3 can determine whether that alternating current power supply V is under-voltage.
It should be noted that be; first resistance R1 is used for shunting; the resistance of the first resistance R1 is the least; the shunt current i1 flowing through the first resistance R1 is the biggest; the electric current i2 flowing through opto-coupler chip IC1 is the least; shunting thus by the first resistance R1 can protect opto-coupler chip IC1, prevents opto-coupler chip IC1 from damaging because crossing stream.
Further, as shown in Figure 2, power detecting end 1 has the sub-IN1 of first input end and the second input terminal IN2, rectification unit 20 includes the first diode D1, the anode IN1 with first input end of the first diode D1 is connected, the negative electrode of the first diode D1 is connected with the first pin A of opto-coupler chip IC1, and the second pin B of the second input terminal IN2 and opto-coupler chip IC1 is connected.
According to one embodiment of present invention, as shown in Figure 2, optocoupler detection module 2 also includes: the negative electrode of the second diode D2 is connected with the first pin A of opto-coupler chip IC1, the anode of the second diode D2 is connected with the second pin B of opto-coupler chip IC1, i.e. says that the second diode D2 is also connected in parallel between the first pin A of opto-coupler chip IC1 and the second pin B.Wherein, the second diode D2 is possible to prevent between the first pin A of opto-coupler chip IC1 and the second pin B to occur backward voltage, protects opto-coupler chip IC1.
According to one embodiment of present invention, as in figure 2 it is shown, optocoupler detection module 2 also includes: the second resistance R2 is connected between the first pin A of the first diode D1 and opto-coupler chip IC1.Wherein, the second resistance R2 plays metering function, is used for protecting opto-coupler chip IC1.
Specifically; when optocoupler detection module 2 is operated; alternating current power supply provides alternating current to be supplied to opto-coupler chip IC1 after the rectification of the first diode D1 and the current limliting of the second resistance R2; wherein; first diode D1 can ensure that the positive half period that opto-coupler chip IC1 is only possible at alternating current is open-minded; and in the negative half-cycle cut-off of alternating current; thus reduce the heating of the second resistance R2; reduce power attenuation; and avoid occurring between the first pin A of opto-coupler chip IC1 and the second pin B reverse pressure drop, protect opto-coupler chip IC1.
Further, as in figure 2 it is shown, optocoupler detection module 2 also includes filter unit 21.Wherein, filter unit 21 is connected with the 4th pin D of opto-coupler chip IC1, is filtered with the detection signal detection signal exporting optocoupler detection module 2.
Further, as in figure 2 it is shown, filter unit 21 includes: the 3rd resistance R3 and the first electric capacity C1.
Wherein, one end of the 3rd resistance R3 is connected with the 4th pin D of opto-coupler chip IC1, the other end ground connection of the 3rd resistance R3；One end of first electric capacity C1 is connected with the 4th pin D of opto-coupler chip IC1, the other end ground connection of the first electric capacity C1.
As in figure 2 it is shown, the 4th pin D of opto-coupler chip IC1 is connected with control module 3 also by the 4th resistance R4.
Specifically; when control module 3 receives the detection signal of the 4th pin D output of opto-coupler chip IC1; judge whether the voltage of alternating current power supply V is in under-voltage condition according to detection signal, and the information that gives a warning when judging the under-voltage of alternating current power supply V is to protect or to remind.
The waveform of the detection signal of opto-coupler chip IC1 output can be as shown in Figure 2 a and 2 b.Wherein, as shown in Figure 2 a, when the voltage of alternating current power supply V is normal, opto-coupler chip IC1 is by the conducting when the voltage of alternating current power supply V is more than predeterminated voltage such as 198V, and control module 3 can detect that high level；As shown in Figure 2 b, when the voltage of alternating current power supply V is in under-voltage condition, the voltage peak of alternating current power supply V is less than predeterminated voltage such as 198V, and opto-coupler chip IC1 ends always, and control module 3 is continuously detected low level.
In other words, alternating current power supply V is connected to optocoupler detection module 2 by power detecting end 1, optocoupler detection module 2 is according to the voltage turn-on of alternating current power supply V or cut-off, and then output detections signal is to control module 3, wherein, if control module 3 detects high level or rising edge, then can determine whether that alternating current power supply V is the most under-voltage；If control module 3 is not detected by high level or rising edge, then can determine whether that the under-voltage of alternating current power supply V, control module 3 give a warning information.It is to be appreciated that optocoupler detection module 2 should not be limited to the circuit structure of above-described embodiment, may also include other detection feedback circuits based on opto-coupler chip IC1.
To sum up; the line under-voltage detection device proposed according to embodiments of the present invention; voltage status by optocoupler detection module detection alternating current power supply; and generate detection signal according to the voltage status of alternating current power supply; and then according to detection signal, control module judges that the voltage of alternating current power supply is the most under-voltage; and when judging the under-voltage of alternating current power supply; give a warning information; thus; it is the most under-voltage that this device can effectively detect power supply by optocoupler detection module; improve product operational reliability, and can effectively protect product, improving product quality by the information of giving a warning.
The embodiment of the present invention also proposed a kind of air-conditioner, and the line under-voltage including above-described embodiment detects device.
To sum up, the air-conditioner proposed according to embodiments of the present invention, detects device by the line under-voltage of above-described embodiment; power supply can be effectively detected the most under-voltage by optocoupler detection module; improve product operational reliability, and can effectively protect product by the information of giving a warning, promote air-conditioner quality.
In describing the invention, it will be appreciated that, term " " center ", " longitudinally ", " laterally ", " length ", " width ", " thickness ", on " ", D score, " front ", " afterwards ", " left ", " right ", " vertically ", " level ", " push up ", " end " " interior ", " outward ", " clockwise ", " counterclockwise ", " axially ", " radially ", orientation or the position relationship of the instruction such as " circumferential " are based on orientation shown in the drawings or position relationship, it is for only for ease of the description present invention and simplifies description, rather than indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not considered as limiting the invention.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or implicitly include at least one this feature.In describing the invention, " multiple " are meant that at least two, such as two, three etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, term " is installed ", " being connected ", " connection ", the term such as " fixing " should be interpreted broadly, and connects for example, it may be fixing, it is also possible to be to removably connect, or integral；Can be to be mechanically connected, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, can be connection or the interaction relationship of two elements of two element internals, unless otherwise clear and definite restriction.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or be merely representative of fisrt feature level height higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be fisrt feature immediately below second feature or obliquely downward, or be merely representative of fisrt feature level height less than second feature.
In the description of this specification, the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means that the specific features, structure, material or the feature that combine this embodiment or example description are contained at least one embodiment or the example of the present invention.In this manual, the schematic representation of above-mentioned term is necessarily directed to identical embodiment or example.And, the specific features of description, structure, material or feature can be to combine in one or more embodiments in office or example in an appropriate manner.Additionally, in the case of the most conflicting, the feature of the different embodiments described in this specification or example and different embodiment or example can be combined and combine by those skilled in the art.
Although above it has been shown and described that embodiments of the invention, it is understandable that, above-described embodiment is exemplary, it is impossible to be interpreted as limitation of the present invention, and above-described embodiment can be changed, revises, replace and modification by those of ordinary skill in the art within the scope of the invention.
Claims (9)
1. a line under-voltage detection device, it is characterised in that including:
Power detecting end, described power detecting end is used for connecting alternating current power supply；
Optocoupler detection module, the input of described optocoupler detection module is connected with described power detecting end, described
Optocoupler detection module includes opto-coupler chip, and described optocoupler detection module detects described friendship by described opto-coupler chip
The voltage status of stream power supply, and generate detection signal according to the voltage status of described alternating current power supply；
Control module, described control module is connected with the outfan of described optocoupler detection module, described control mould
According to described detection signal, tuber judges that the voltage of described alternating current power supply is the most under-voltage, and judging described alternating current
Give a warning during the under-voltage in source information.
Line under-voltage the most according to claim 1 detection device, it is characterised in that described optocoupler is examined
Survey module also to include:
Rectification unit, described rectification unit is connected with described power detecting end with the voltage to described alternating current power supply
Carry out rectification；
First resistance, described first resistor coupled in parallel the first pin of described opto-coupler chip and the second pin it
Between, wherein, the three-prong of described opto-coupler chip is connected with default power supply, the 4th pipe of described opto-coupler chip
Foot is connected with described control module as the outfan of described optocoupler detection module.
Line under-voltage the most according to claim 2 detection device, it is characterised in that described power supply is examined
Surveying end and have first input end and the second input terminal, described rectification unit includes the first diode, described
The anode of the first diode is connected with described first input end, the negative electrode of described first diode and described light
First pin of coupling chip is connected, and described second input terminal is connected with the second pin of described opto-coupler chip.
Line under-voltage the most according to claim 3 detection device, it is characterised in that described optocoupler is examined
Surveying module also to include: the second diode, the negative electrode of described second diode is managed with the first of described opto-coupler chip
Foot is connected, and the anode of described second diode is connected with the second pin of described opto-coupler chip.
Line under-voltage the most according to claim 4 detection device, it is characterised in that described optocoupler is examined
Surveying module also to include: the second resistance, described second resistance is connected to described first diode and described optocoupler core
Between first pin of sheet.
Line under-voltage the most according to claim 2 detection device, it is characterised in that described optocoupler is examined
Survey module also to include:
Filter unit, described filter unit is connected with the 4th pin of described opto-coupler chip, to detect optocoupler
The described detection signal detection signal of module output is filtered.
Line under-voltage the most according to claim 6 detection device, it is characterised in that described filtering list
Unit includes:
3rd resistance, described one end of 3rd resistance is connected with the 4th pin of described opto-coupler chip, and described
The other end ground connection of three resistance；
First electric capacity, one end of described first electric capacity is connected with the 4th pin of described opto-coupler chip, and described
The other end ground connection of one electric capacity.
Line under-voltage the most according to claim 2 detection device, it is characterised in that described optocoupler core
4th pin of sheet is connected with described control module also by the 4th resistance.
9. an air-conditioner, it is characterised in that include according to the electricity according to any one of claim 1-8
Source is under-voltage detection device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620320449.0U CN205643661U (en) | 2016-04-14 | 2016-04-14 | Undervoltage power detection device and have its air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620320449.0U CN205643661U (en) | 2016-04-14 | 2016-04-14 | Undervoltage power detection device and have its air conditioner |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106597075A (en) * | 2016-12-13 | 2017-04-26 | 合肥美的暖通设备有限公司 | Alternating voltage detection device and method |
| CN107395136A (en) * | 2017-08-31 | 2017-11-24 | 成都四威功率电子科技有限公司 | A kind of protection circuit applied to gallium nitride and GaAs Power amplifier |
| CN110286336A (en) * | 2019-07-04 | 2019-09-27 | 北京市速连科通信设备有限责任公司 | A kind of power detector |
| CN113466735A (en) * | 2021-09-06 | 2021-10-01 | 西安热工研究院有限公司 | Variable power supply monitoring circuit |
-
2016
- 2016-04-14 CN CN201620320449.0U patent/CN205643661U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106597075A (en) * | 2016-12-13 | 2017-04-26 | 合肥美的暖通设备有限公司 | Alternating voltage detection device and method |
| CN106597075B (en) * | 2016-12-13 | 2019-04-19 | 合肥美的暖通设备有限公司 | A kind of alternating voltage detection device and method |
| CN107395136A (en) * | 2017-08-31 | 2017-11-24 | 成都四威功率电子科技有限公司 | A kind of protection circuit applied to gallium nitride and GaAs Power amplifier |
| CN110286336A (en) * | 2019-07-04 | 2019-09-27 | 北京市速连科通信设备有限责任公司 | A kind of power detector |
| CN113466735A (en) * | 2021-09-06 | 2021-10-01 | 西安热工研究院有限公司 | Variable power supply monitoring circuit |
| CN113466735B (en) * | 2021-09-06 | 2022-02-11 | 西安热工研究院有限公司 | Variable power supply monitoring circuit |
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