CN109143063A - A kind of detection device and method of air-conditioning high and low voltage switch - Google Patents
A kind of detection device and method of air-conditioning high and low voltage switch Download PDFInfo
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- CN109143063A CN109143063A CN201811296400.6A CN201811296400A CN109143063A CN 109143063 A CN109143063 A CN 109143063A CN 201811296400 A CN201811296400 A CN 201811296400A CN 109143063 A CN109143063 A CN 109143063A
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- voltage switch
- low tension
- low
- air
- switch gear
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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
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
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- General Physics & Mathematics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses the detection devices and method of a kind of air-conditioning high and low voltage switch, the detection device includes: high and low voltage switch signal acquisition module, it is connected respectively with the high-voltage switch gear of air-conditioner set and low tension switch, for obtaining the high-voltage switch gear signal of the high-voltage switch gear of air-conditioner set at runtime and the low tension switch signal of the low tension switch；Air conditioner operation parameters obtain module, for obtaining the temperature parameter at pressure parameter and the high-voltage switch gear of the air-conditioner set at runtime at the low tension switch；Judgment module, for according to the temperature parameter at the pressure parameter and the high-voltage switch gear at the low tension switch respectively with the corresponding relationship of the low tension switch signal and the high-voltage switch gear signal come judge the high-voltage switch gear and the low tension switch whether normal operation.The detection device and method of air-conditioning high and low voltage switch of the invention can detect automatically whether air-conditioning high and low voltage switch is operating abnormally.
Description
Technical field
The present invention relates to field of air conditioning more particularly to a kind of detection devices and method of air-conditioning high and low voltage switch.
Background technique
High and low voltage switch is the pressure protection device for air-conditioning system, and high and low voltage switch was installed in production process at present
Artificial plug wire docking is carried out using to patch piece in journey, needs manually to dock twice in operating process.Long-time operation is easy
Existing high and low voltage switch, which does not connect, perhaps to be occurred going out when other failures cause air conditioner when detecting or client's family use
Existing failure.
Summary of the invention
The purpose of the present invention is in view of the above-mentioned drawbacks of the prior art, air-conditioning high-low pressure can be detected automatically by providing one kind
Switch whether the detection device and method of normal air-conditioning high and low voltage switch.
In the embodiment of the present invention, a kind of detection device of air-conditioning high and low voltage switch is provided comprising:
High and low voltage switch signal acquisition module is connected, for obtaining respectively with the high-voltage switch gear of air-conditioner set and low tension switch
The high-voltage switch gear signal of the high-voltage switch gear of air-conditioner set at runtime and the low tension switch signal of the low tension switch；
Air conditioner operation parameters obtain module, for obtain pressure parameter at the low tension switch of air-conditioner set at runtime and
Temperature parameter at the high-voltage switch gear；
Judgment module, for according to the temperature parameter at the pressure parameter and the high-voltage switch gear at the low tension switch respectively with
The corresponding relationship of the low tension switch signal and the high-voltage switch gear signal judges the high-voltage switch gear and the low tension switch
Whether normal operation.
In the embodiment of the present invention, the detection device of the air-conditioning high and low voltage switch further include:
Power module obtains module and described with the high and low voltage switch signal acquisition module, the air conditioner operation parameters respectively
Judgment module is connected, for obtaining module and institute for the high and low voltage switch signal acquisition module, the air conditioner operation parameters
State judgment module power supply.
In the embodiment of the present invention, the detection device of the air-conditioning high and low voltage switch further include:
Alarm module, for alarming when judging that the high-voltage switch gear and the low tension switch are operating abnormally.
In the embodiment of the present invention, the alarm module is buzzer.
In the embodiment of the present invention, the judgment module uses chip microcontroller.
In the embodiment of the present invention, the pressure parameter at the low tension switch is lower than the opening pressure threshold of the low tension switch
When value, if the low tension switch signal of the low tension switch is to disconnect, and then the pressure parameter at the low tension switch rises
After on to the clossing pressure threshold value of the low tension switch, the low tension switch signal of the low tension switch is converted to from disconnection is led
Logical, the judgment module determines the low tension switch normal operation, otherwise determines that the low tension switch is operating abnormally.
In the embodiment of the present invention, the temperature parameter at the high-voltage switch gear is higher than the break-off signal threshold of the high-voltage switch gear
When value, if the high-voltage switch gear signal of the high-voltage switch gear is to disconnect, and then the temperature parameter at the high-voltage switch gear declines
To under the closed temperature threshold value of the high-voltage switch gear, the high-voltage switch gear signal of the high-voltage switch gear is converted to conducting from disconnection,
The judgment module determines the high-voltage switch gear normal operation, otherwise determines that the high-voltage switch gear is operating abnormally.
In the embodiment of the present invention, a kind of detection method of air-conditioning high and low voltage switch is additionally provided comprising:
Parameters acquiring procedure: the high-voltage switch gear signal of the high-voltage switch gear of air-conditioner set at runtime, the low pressure of low tension switch are obtained
Temperature ginseng at pressure parameter and the high-voltage switch gear at the low tension switch of switching signal, air-conditioner set at runtime
Number；
Judgment step: according to the temperature parameter at the pressure parameter and the high-voltage switch gear at the low tension switch respectively with it is described
The corresponding relationship of low tension switch signal and the high-voltage switch gear signal judges whether are the high-voltage switch gear and the low tension switch
Normal operation.
In the embodiment of the present invention, the detection method of the air-conditioning high and low voltage switch further include:
Alarming step: it alarms when judging that the high-voltage switch gear and the low tension switch are operating abnormally.
In the embodiment of the present invention, in the judgment step, the pressure parameter at the low tension switch is lower than the low pressure
When the opening pressure threshold value of switch, if the low tension switch signal of the low tension switch is disconnection, and the then low tension switch
After the pressure parameter at place rises on the clossing pressure threshold value of the low tension switch, the low tension switch signal of the low tension switch
Conducting is converted to from disconnection, then determines the low tension switch normal operation, otherwise determines that the low tension switch is operating abnormally.
In the embodiment of the present invention, in the judgment step, the temperature parameter at the high-voltage switch gear is higher than the high pressure
When the break-off signal threshold value of switch, if the high-voltage switch gear signal of the high-voltage switch gear is disconnection, and the then high-voltage switch gear
The temperature parameter at place drops under the closed temperature threshold value of the high-voltage switch gear, the high-voltage switch gear signal of the high-voltage switch gear from
Disconnection is converted to conducting, then determines the high-voltage switch gear normal operation, otherwise determines that the high-voltage switch gear is operating abnormally.
Compared with prior art, in the detection device and method of air-conditioning high and low voltage switch of the invention, air conditioner is obtained
The group high-voltage switch gear signal of high-voltage switch gear at runtime, the low tension switch signal of low tension switch, air-conditioner set are at runtime
The temperature parameter at pressure parameter and the high-voltage switch gear at the low tension switch, and according to the pressure at the low tension switch
Temperature parameter at parameter and the high-voltage switch gear is corresponding with the low tension switch signal and the high-voltage switch gear signal respectively
Relationship come judge the high-voltage switch gear and the low tension switch whether normal operation, so as to quickly be found in air conditioner test
Whether air-conditioning high and low voltage switch there is exception.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the detection device of the air-conditioning high and low voltage switch of the embodiment of the present invention；
Fig. 2 is the flow chart of the detection method of the air-conditioning high and low voltage switch of the embodiment of the present invention.
Specific embodiment
As shown in Figure 1, providing a kind of detection device of air-conditioning high and low voltage switch in the embodiment of the present invention comprising high
Low tension switch signal acquisition module 11, air conditioner operation parameters obtain module 12, judgment module 13, power module 14 and alarm module
15.It is described in detail separately below.
The high and low voltage switch signal acquisition module 11, respectively with the low tension switch 21 of air-conditioner set 20 and high-voltage switch gear 22
It is connected, for obtaining the low tension switch signal and the high-voltage switch gear of the low tension switch 21 of air-conditioner set 20 at runtime
22 high-voltage switch gear signal.
The air conditioner operation parameters obtain module 12, for obtaining the low tension switch 21 of air-conditioner set 20 at runtime
Temperature parameter at the pressure parameter at place and the high-voltage switch gear 22.
The judgment module 13, at according to the pressure parameter and the high-voltage switch gear 22 at the low tension switch 21
Temperature parameter and the low tension switch signal, the high-voltage switch gear signal corresponding relationship judge the low tension switch 21 and institute
State high-voltage switch gear 22 whether normal operation.
It should be noted that low tension switch can be disconnected in pressure lower than certain pressure value (such as 0.05Mpa) automatically, work as low pressure
(0.15MPa) restores closed state automatically after pressure rises to certain pressure value.High-voltage switch gear is a kind of protective switch of air-conditioning,
It is equivalent to a relay, shutdown can be disconnected, automatically when outdoor machine of air-conditioner leaving air temp is too high for protecting compressor；Work as sky
When adjusting the decline of outer machine leaving air temp, high-voltage switch gear can automatically reply closed state.
In the embodiment of the present invention, the pressure parameter at the low tension switch 21 is lower than the disconnection pressure of the low tension switch 21
When force threshold, if the low tension switch signal of the low tension switch 21 is disconnection, and the then pressure at the low tension switch 21
After parameter rises on the clossing pressure threshold value of the low tension switch 21, the low tension switch signal of the low tension switch 21 is from disconnected
It opens and is converted to conducting, the judgment module determines 21 normal operation of low tension switch, otherwise determines that the low tension switch 21 is transported
Row is abnormal.When temperature parameter at the high-voltage switch gear 22 is higher than the break-off signal threshold value of the high-voltage switch gear 22, if institute
The high-voltage switch gear signal of high-voltage switch gear 22 is stated to disconnect, and then the temperature parameter at the high-voltage switch gear 22 drops to the height
Under the 22 closed temperature threshold value that compresses switch, the high-voltage switch gear signal of the high-voltage switch gear 22 is converted to conducting from disconnection, described
Judgment module 13 determines 22 normal operation of high-voltage switch gear, otherwise determines that the high-voltage switch gear 22 is operating abnormally.
In the embodiment of the present invention, chip microcontroller is can be used in the judgment module 13.
The power module 14 is obtained with the high and low voltage switch signal acquisition module 11, the air conditioner operation parameters respectively
Modulus block 12 is connected with the judgment module 14, for transporting for the high and low voltage switch signal acquisition module 11, the air-conditioning
Row parameter acquisition module 12 and the judgment module 13 are powered.
The alarm module 15 is connected with the judgment module 13, for judging the height in the judgment module 13
Compress switch or the low tension switch be operating abnormally when, according to the judgment module 13 issue signal alarm.It is described
Alarm module 15 can be buzzer.
As shown in Fig. 2, additionally providing a kind of detection method of air-conditioning high and low voltage switch in the embodiment of the present invention comprising:
Step S1, high-voltage switch gear signal, the low tension switch of the high-voltage switch gear of air-conditioner set at runtime parameters acquiring procedure: are obtained
Low tension switch signal, the temperature at pressure parameter and the high-voltage switch gear at the low tension switch of air-conditioner set at runtime
Spend parameter；
Step S2, judgment step: according to the temperature parameter at the pressure parameter and the high-voltage switch gear at the low tension switch point
The high-voltage switch gear and the low pressure are not judged with the corresponding relationship of the low tension switch signal and the high-voltage switch gear signal
Switch whether normal operation.
Step S3, it alarming step: alarms when judging that the high-voltage switch gear and the low tension switch are operating abnormally.
It should be noted that the pressure parameter at the low tension switch is lower than the low pressure in the judgment step
When the opening pressure threshold value of switch, if the low tension switch signal of the low tension switch is disconnection, and the then low tension switch
After the pressure parameter at place rises on the clossing pressure threshold value of the low tension switch, the low tension switch signal of the low tension switch
Conducting is converted to from disconnection, then determines the low tension switch normal operation, otherwise determines that the low tension switch is operating abnormally.Work as institute
When stating temperature parameter at high-voltage switch gear and being higher than the break-off signal threshold value of the high-voltage switch gear, if the high pressure of the high-voltage switch gear
Switching signal is to disconnect, and then the temperature parameter at the high-voltage switch gear drops to the closed temperature threshold value of the high-voltage switch gear
Under, the high-voltage switch gear signal of the high-voltage switch gear is converted to conducting from disconnection, then determines the high-voltage switch gear normal operation, no
Then determine that the high-voltage switch gear is operating abnormally.
In conclusion obtaining air-conditioner set in the detection device and method of air-conditioning high and low voltage switch of the invention and running
When the high-voltage switch gear signal of high-voltage switch gear, the low tension switch signal of low tension switch, the low pressure of air-conditioner set at runtime
The temperature parameter at pressure parameter and the high-voltage switch gear at switch, and according at the low tension switch pressure parameter and institute
The temperature parameter at high-voltage switch gear is stated to sentence with the corresponding relationship of the low tension switch signal and the high-voltage switch gear signal respectively
Break the high-voltage switch gear and the low tension switch whether normal operation, so as to quickly find air-conditioning height in air conditioner test
It compresses switch and whether exception occurs.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (11)
1. a kind of detection device of air-conditioning high and low voltage switch characterized by comprising
High and low voltage switch signal acquisition module is connected, for obtaining respectively with the high-voltage switch gear of air-conditioner set and low tension switch
The high-voltage switch gear signal of the high-voltage switch gear of air-conditioner set at runtime and the low tension switch signal of the low tension switch；
Air conditioner operation parameters obtain module, for obtaining pressure parameter and institute of the air-conditioner set at runtime at the low tension switch
State the temperature parameter at high-voltage switch gear；
Judgment module, for according to the temperature parameter at the pressure parameter and the high-voltage switch gear at the low tension switch respectively with
The corresponding relationship of the low tension switch signal and the high-voltage switch gear signal judges the high-voltage switch gear and the low tension switch
Whether normal operation.
2. the detection device of air-conditioning high and low voltage switch as described in claim 1, which is characterized in that further include:
Power module obtains module and described with the high and low voltage switch signal acquisition module, the air conditioner operation parameters respectively
Judgment module is connected, for obtaining module and institute for the high and low voltage switch signal acquisition module, the air conditioner operation parameters
State judgment module power supply.
3. the detection device of the air-conditioning high and low voltage switch as claimed in claim 1 or 2, which is characterized in that further include:
Alarm module, for alarming when judging that the high-voltage switch gear and the low tension switch are operating abnormally.
4. the detection device of air-conditioning high and low voltage switch as claimed in claim 3, which is characterized in that the alarm module is buzzing
Device.
5. the detection device of air-conditioning high and low voltage switch as claimed in claim 3, which is characterized in that the judgment module is using single
Piece machine is realized.
6. the detection device of air-conditioning high and low voltage switch as described in claim 1, which is characterized in that at the low tension switch
When pressure parameter is lower than the opening pressure threshold value of the low tension switch, if the low tension switch signal of the low tension switch is disconnected
It opens, and after then the pressure parameter at the low tension switch rises on the clossing pressure threshold value of the low tension switch, it is described
The low tension switch signal of low tension switch is converted to conducting from disconnection, and the judgment module determines the low tension switch normal operation,
Otherwise determine that the low tension switch is operating abnormally.
7. the detection device of air-conditioning high and low voltage switch as described in claim 1, which is characterized in that at the high-voltage switch gear
When temperature parameter is higher than the break-off signal threshold value of the high-voltage switch gear, if the high-voltage switch gear signal of the high-voltage switch gear is disconnected
It opens, and then the temperature parameter at the high-voltage switch gear drops under the closed temperature threshold value of the high-voltage switch gear, the height
The high-voltage switch gear signal to compress switch is converted to conducting from disconnection, and the judgment module determines the high-voltage switch gear normal operation, no
Then determine that the high-voltage switch gear is operating abnormally.
8. a kind of detection method of air-conditioning high and low voltage switch characterized by comprising
Parameters acquiring procedure: obtaining air-conditioner set, the high-voltage switch gear signal of high-voltage switch gear, the low pressure of low tension switch are opened at runtime
The temperature parameter at pressure parameter and the high-voltage switch gear at OFF signal, the low tension switch；
Judgment step: according to the temperature parameter at the pressure parameter and the high-voltage switch gear at the low tension switch respectively with it is described
The corresponding relationship of low tension switch signal and the high-voltage switch gear signal judges whether are the high-voltage switch gear and the low tension switch
Normal operation.
9. the detection method of the air-conditioning high and low voltage switch as claimed in claim 8, which is characterized in that further include:
Alarming step: it alarms when judging that the high-voltage switch gear and the low tension switch are operating abnormally.
10. the detection method of air-conditioning high and low voltage switch as claimed in claim 8 or 9, which is characterized in that the judgment step
In, when the pressure parameter at the low tension switch is lower than the opening pressure threshold value of the low tension switch, if the low pressure is opened
The low tension switch signal of pass is to disconnect, and then the pressure parameter at the low tension switch rises to the closure of the low tension switch
After on pressure threshold, the low tension switch signal of the low tension switch is converted to conducting from disconnection, then determines the low tension switch
Otherwise normal operation determines that the low tension switch is operating abnormally.
11. the detection method of air-conditioning high and low voltage switch as described in claim 1, which is characterized in that in the judgment step, when
When temperature parameter at the high-voltage switch gear is higher than the break-off signal threshold value of the high-voltage switch gear, if the height of the high-voltage switch gear
OFF signal is pressed off to disconnect, and then the temperature parameter at the high-voltage switch gear drops to the closed temperature threshold of the high-voltage switch gear
Under value, the high-voltage switch gear signal of the high-voltage switch gear is converted to conducting from disconnection, then determines the high-voltage switch gear normal operation,
Otherwise determine that the high-voltage switch gear is operating abnormally.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811296400.6A CN109143063B (en) | 2018-11-01 | 2018-11-01 | Detection device and method for high-low voltage switch of air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811296400.6A CN109143063B (en) | 2018-11-01 | 2018-11-01 | Detection device and method for high-low voltage switch of air conditioner |
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| CN109143063A true CN109143063A (en) | 2019-01-04 |
| CN109143063B CN109143063B (en) | 2023-09-12 |
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| CN201811296400.6A Active CN109143063B (en) | 2018-11-01 | 2018-11-01 | Detection device and method for high-low voltage switch of air conditioner |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110749030A (en) * | 2019-10-29 | 2020-02-04 | 益阳欣达天马电器设备制造有限公司 | Detection device and method for high-low voltage switch of air conditioner |
| CN111412683A (en) * | 2020-04-07 | 2020-07-14 | 南京天加环境科技有限公司 | Optimized high-voltage/low-voltage protection control method for air conditioner |
| CN111623484A (en) * | 2020-05-13 | 2020-09-04 | 青岛海尔空调电子有限公司 | Air conditioner, control method thereof and computer readable storage medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104635719A (en) * | 2013-11-13 | 2015-05-20 | 广州汽车集团股份有限公司 | Automotive air conditioning failure diagnosis method, device and system |
| CN104729030A (en) * | 2013-12-24 | 2015-06-24 | 珠海格力电器股份有限公司 | Air-conditioner disorder detecting method and server |
| CN105091215A (en) * | 2015-07-24 | 2015-11-25 | 珠海格力电器股份有限公司 | Fluorine lack start-up detection method and device for multi-split air-conditioner |
| CN105181357A (en) * | 2015-10-16 | 2015-12-23 | 北汽福田汽车股份有限公司 | Vehicle air-conditioning system detection method and device |
| CN107091517A (en) * | 2017-06-30 | 2017-08-25 | 珠海格力电器股份有限公司 | Protection control method, device and the air-conditioner set of air-conditioner set |
-
2018
- 2018-11-01 CN CN201811296400.6A patent/CN109143063B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104635719A (en) * | 2013-11-13 | 2015-05-20 | 广州汽车集团股份有限公司 | Automotive air conditioning failure diagnosis method, device and system |
| CN104729030A (en) * | 2013-12-24 | 2015-06-24 | 珠海格力电器股份有限公司 | Air-conditioner disorder detecting method and server |
| CN105091215A (en) * | 2015-07-24 | 2015-11-25 | 珠海格力电器股份有限公司 | Fluorine lack start-up detection method and device for multi-split air-conditioner |
| CN105181357A (en) * | 2015-10-16 | 2015-12-23 | 北汽福田汽车股份有限公司 | Vehicle air-conditioning system detection method and device |
| CN107091517A (en) * | 2017-06-30 | 2017-08-25 | 珠海格力电器股份有限公司 | Protection control method, device and the air-conditioner set of air-conditioner set |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110749030A (en) * | 2019-10-29 | 2020-02-04 | 益阳欣达天马电器设备制造有限公司 | Detection device and method for high-low voltage switch of air conditioner |
| CN111412683A (en) * | 2020-04-07 | 2020-07-14 | 南京天加环境科技有限公司 | Optimized high-voltage/low-voltage protection control method for air conditioner |
| CN111412683B (en) * | 2020-04-07 | 2021-10-26 | 南京天加环境科技有限公司 | Optimized high-voltage/low-voltage protection control method for air conditioner |
| CN111623484A (en) * | 2020-05-13 | 2020-09-04 | 青岛海尔空调电子有限公司 | Air conditioner, control method thereof and computer readable storage medium |
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| CN109143063B (en) | 2023-09-12 |
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