CN201522520U - Abnormal voltage detector - Google Patents
Abnormal voltage detector Download PDFInfo
- Publication number
- CN201522520U CN201522520U CN2009201951117U CN200920195111U CN201522520U CN 201522520 U CN201522520 U CN 201522520U CN 2009201951117 U CN2009201951117 U CN 2009201951117U CN 200920195111 U CN200920195111 U CN 200920195111U CN 201522520 U CN201522520 U CN 201522520U
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- voltage
- abnormal
- abnormal voltage
- master chip
- detecting
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Abstract
The utility model belongs to the technical field of electrical appliances, in particular to an abnormal voltage detector, which comprises a power circuit, a voltage detection and comparison circuit which is connected on the power circuit, and a main chip which is connected with the power circuit and the voltage detection and comparison circuit, wherein detection signals in the voltage detection and comparison circuit are inputted into the main chip, an output end of the voltage detection and comparison circuit is connected with a check-out circuit with voltage signals of 50/60 Hz, the inside of the main chip is provided with an abnormal voltage detection procedure treatment module, the periphery of the main chip is also connected with an external memory device, the external memory device is used for information of abnormal check-out conditions when the voltage abnormal main chip cannot temporarily detect 50/60 Hz. The abnormal voltage detector has the advantages of being capable of effectively distinguish instantaneous power failure from abnormal voltages, checking out generation frequencies of abnormal voltages, properly controlling abnormal protection stop grades according to generation frequencies, ensuring safety and reliability of appliances, and substantially extending service lives of appliances.
Description
Technical field
The utility model relates to a kind of overvoltage protection, the abnormal voltage pick-up unit of using in particularly a kind of technical field of electric appliances.
Background technology
Electric equipment products in use, abnormal voltage is totally unfavorable to the influence of electric equipment products in the circuit, badly influences the normal use of electric equipment products.At present,, can in electric power loop, increase a voltage detecting and comparator circuit usually, when abnormal voltage takes place, can detect in real time by voltage detecting and comparator circuit in order to solve the adverse effect of abnormal voltage to product.And in the prior art; usually all be to judge by the 50/60Hz detecting circuit; like this; when abnormal voltage takes place; make the processing the same with instantaneous power-off; be after instantaneous power-off and abnormal voltage take place; the state that electric equipment products showed is identical; can not distinguish exactly is instantaneous power-off or abnormal voltage; thereby can't exactly instantaneous power-off or the different generation state of abnormal voltage be informed the user; also can't take corresponding to the generation of abnormal voltage in time; reasonably take precautions against safeguard measure, greatly influenced the usability of electric equipment products under the abnormal voltage situation, is greatly affected the serviceable life of electric equipment products.
The utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art; a kind of abnormal voltage pick-up unit is provided; this abnormal voltage pick-up unit can be distinguished effectively to instantaneous power-off and abnormal voltage; can in time the electric voltage exception situation be informed the user; in addition, can detect the occurrence frequency of abnormal voltage, can be according to the frequency that the takes place rank that stops of control abnormity protection suitably; guarantee the safe reliability that electric equipment products are used, greatly prolong the serviceable life of electric equipment products.
In order to realize above-mentioned technical purpose, the utility model is realized by following technical scheme:
A kind of abnormal voltage pick-up unit described in the utility model, comprise electric power loop, be connected voltage detecting and comparator circuit on the electric power loop, and the master chip that is connected with comparator circuit with electric power loop and voltage detecting, detection signal in described voltage detecting and the comparator circuit is input in the master chip, the output terminal of described voltage detecting and comparator circuit is connected with voltage signal 50/60Hz detecting circuit, also be provided with abnormal voltage trace routine processing module in the described master chip, described master chip periphery also is connected with external memory, and this external memory is used to remember the relevant information when unusually the detect situation of the temporary detection of electric voltage exception master chip during less than 50/60Hz.
In the utility model, correspondence is provided with the 50/60Hz pin that is used for detectable voltage signals on the described master chip, after described voltage signal 50/60Hz is input to master chip, detects by abnormal voltage trace routine processing module.
Further improvement as above-mentioned technology, described external memory is the EEPROM memory storage, being provided with when outage in the described master chip can write to the EEPROM writing module of EEPROM memory storage and the EEPROM that EEPROM memory storage institute data memory is delivered to master chip is read module detecting data accumulating.
Further improvement as above-mentioned technology, the temporary detection of described electric voltage exception master chip less than 50/60Hz detect situation unusually the time, remember the continuation time that this detects situation unusually by the EEPROM memory storage, can adjust abnormal voltage automatically and judge the time, unusual detection time, was judged as abnormal voltage and takes place when above in the judgement time of certain hour.
Further improvement as above-mentioned technology, the temporary detection of described electric voltage exception master chip less than 50/60Hz detect situation unusually the time, remember the number of times that this detects situation unusually and is taken place by the EEPROM memory storage, when the certain hour frequency surpasses set point number, be judged as abnormal voltage and take place.
In the utility model, can also be connected with display device or sound source that abnormal signal is exported and reported on the described master chip.Specifically, described display device is the LED lamp that turns round in the electric equipment products or/and LED lamp regularly; Described sound source is the hummer that is connected on the master chip.
In the utility model, described voltage detecting and comparator circuit comprise divider resistance R1, R2, R3, R4 and comparer; Electric power loop comprises interchange AC power supplies, transformer T1, bridge rectifier D B1, smoothing capacity C1 and 5V mu balanced circuit.
Compared with prior art, the beneficial effects of the utility model are:
(1) the utility model can be distinguished instantaneous power-off and abnormal voltage effectively effectively, carries out different control according to the instantaneous power-off situation occurred different with abnormal voltage then;
(2) in the utility model owing to by external EEPROM, make the occurrence frequency of abnormal voltage to detect, so the rank that the user can the control abnormity protection stop according to the frequency that takes place.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in detail:
Fig. 1 is abnormal voltage pick-up unit hardware-in-the-loop figure described in the utility model;
Fig. 2 a is the utility model instantaneous power-off and abnormal voltage decision flowchart;
Fig. 2 b be in the utility model because of the temporary detection of electric voltage exception master chip less than 50/60Hz detect situation unusually the time judge abnormal voltage generation process flow diagram one;
Fig. 2 c be in the utility model because of the temporary detection of electric voltage exception master chip less than 50/60Hz detect situation unusually the time judge abnormal voltage generation flowchart 2;
Fig. 3 is an abnormal detector structured flowchart described in the utility model.
Embodiment
As Fig. 1, shown in Figure 3, a kind of abnormal voltage pick-up unit described in the utility model, comprise electric power loop, be connected voltage detecting and comparator circuit 1 on the electric power loop, and the master chip that is connected with comparator circuit 1 with electric power loop and voltage detecting, detection signal in described voltage detecting and the comparator circuit 1 is input in the master chip, the output terminal of described voltage detecting and comparator circuit is connected with voltage signal 50/60Hz detecting circuit, in addition, be provided with abnormal voltage trace routine processing module in the master chip, the master chip periphery also is connected with external memory EEPROM memory storage, and this external memory EEPROM memory storage is used to remember the relevant information of the situation that detects unusually during less than 50/60Hz when the temporary detection of electric voltage exception master chip.
Specifically: the output terminal of voltage detecting and comparator circuit is connected with voltage signal 50/60Hz detecting circuit, the corresponding 50/60Hz pin that is used for detectable voltage signals that is provided with on the master chip, after voltage signal 50/60Hz is input to master chip, detect by abnormal voltage trace routine processing module, continuation time that then abnormal voltage is detected and the memory of the number of times of detection are in the EEPROM memory storage, be provided with in the master chip and read module detecting that data accumulating writes to the EEPROM writing module of EEPROM memory storage and EEPROM memory storage institute data memory being delivered letters to the EEPROM of master chip.
As shown in Figure 1, electric power loop comprises interchange AC power supplies, transformer T1, bridge rectifier D B1, smoothing capacity C1 and 5V mu balanced circuit, and normal voltage detecting loop comprises divider resistance R1, R2, R3, R4 and comparer.
In addition, in the utility model,, also be connected with on the master chip abnormal signal output and the display device reported or/and sound source for the detected abnormal conditions of master chip are informed the user.For the air-conditioning product, display device can be for the running LED lamp installed on the indoor apparatus of air conditioner or/and LED lamp regularly, sound source is to be installed on the indoor set and to be connected hummer on the master chip.Unusual flicker situation by the LED lamp or the sounding situation by hummer are reported the abnormal voltage situation to the user timely.
Fig. 2 a be utility model for instantaneous power-off and abnormal voltage decision flowchart, as known in the figure:
Go into power 50/60Hz pin by master chip and detect the 50/60Hz signal, when can't detect more than the continuous 32MS of 50/60Hz signal, begin to carry out the judgement of instantaneous power-off and abnormal voltage:
Idiographic flow is:
S1:50/60Hz signal A (does not detect step more than the A＞32ms);
Above-mentioned when being judged as Y, carry out step S2: abnormal voltage is judged, treatment step;
Above-mentioned when being judged as N, carry out step S3: carry out the following judgement above A of 32ms second, during for Y, carry out step S4 instantaneous power-off and judge, handle.
The principle of work of this flow process is: when master chip when continuously certain hour (A second) detects less than the 50/60Hz signal, be judged as abnormal voltage (power failure is not because of master chip has electricity yet, so do not judge) take place.
Fig. 2 b is that the process flow diagram that abnormal voltage takes place is judged in the continuation that the utility model utilization detects (because of the situation about unusually detecting of the temporary detection of electric voltage exception master chip less than 50/60Hz) unusually time memory, specifically:
S5: on 50/60Hz, detect unusual (temporary detecting) less than 50/60Hz;
S6: unusual memory continuous time, judgement time set-up procedure;
S7: more than the certain hour (B second);
S8: abnormal voltage is judged, treatment step.
Its principle of work is: can adjust abnormal voltage automatically and judge the time continuation time memory that will detect unusually behind the EEPROM memory storage, and unusual detection time when above, is judged as the abnormal voltage generation in the judgement time of certain hour (B second).
Fig. 2 c is that the number of times that the utility model utilization detects (because of the situation about unusually detecting of the temporary detection of electric voltage exception master chip less than 50/60Hz) is unusually remembered the process flow diagram of judging that abnormal voltage takes place, specifically:
S9: on 50/60Hz, detect unusual (temporary detecting) less than 50/60Hz;
S10: the abnormal voltage frequency is remembered in EEPROM;
S11: surpass set point number in the certain hour (C second);
S12: abnormal voltage is judged, treatment step.
This abnormal voltage detects resolution principle: the number of times of abnormality detection is remembered at the EEPROM memory storage, when certain hour (C second) frequency surpasses set point number, be judged as abnormal voltage and take place.
The utility model can be distinguished instantaneous power-off and abnormal voltage effectively; And; after master chip detects abnormal voltage, show or the pronunciation of hummer can be informed the user with these abnormal conditions in time by the LED lamp, make the user in good time take reasonably to take precautions against safeguard measure; guarantee the normal operation of electric equipment products, prolong its serviceable life.The utility model cost of manufacture is cheap, promptly just can realize the abnormal voltage measuring ability under the prerequisite that need not raise the cost, and is simple and convenient.
The utility model be because of the occurrence frequency of abnormal voltage can detect, and makes the rank that the user can come accurate control abnormity protection to stop according to this abnormal voltage occurrence frequency situation, the accuracy height.
Claims (10)
1. abnormal voltage pick-up unit, comprise electric power loop, be connected voltage detecting and comparator circuit on the electric power loop, and the master chip that is connected with comparator circuit with electric power loop and voltage detecting, detection signal in described voltage detecting and the comparator circuit is input in the master chip, the output terminal of described voltage detecting and comparator circuit is connected with voltage signal 50/60Hz detecting circuit, it is characterized in that: be provided with abnormal voltage trace routine processing module in the described master chip, described master chip periphery also is connected with external memory, and this external memory is used to remember the information when unusually the detect situation of the temporary detection of electric voltage exception master chip during less than 50/60Hz.
2. abnormal voltage pick-up unit according to claim 1, it is characterized in that: the corresponding 50/60Hz pin that is used for detectable voltage signals that is provided with on the described master chip, after described voltage signal 50/60Hz is input to master chip, detect by abnormal voltage trace routine processing module.
3. abnormal voltage pick-up unit according to claim 2, it is characterized in that: described external memory is the EEPROM memory storage, being provided with when outage in the described master chip can write to the EEPROM writing module of EEPROM memory storage and the EEPROM that EEPROM memory storage institute data memory is delivered to master chip is read module detecting data accumulating.
4. abnormal voltage pick-up unit according to claim 3, it is characterized in that: the temporary detection of described electric voltage exception master chip is during less than the situation about detecting unusually of 50/60Hz, remember the continuation time that this detects situation unusually by the EEPROM memory storage, can adjust abnormal voltage automatically and judge the time, unusual detection time, was judged as abnormal voltage and takes place when above in the judgement time of certain hour.
5. abnormal voltage pick-up unit according to claim 3, it is characterized in that: the temporary detection of described electric voltage exception master chip less than 50/60Hz detect situation unusually the time, remember the number of times that this detects situation unusually and is taken place by the EEPROM memory storage, when the certain hour frequency surpasses set point number, be judged as abnormal voltage and take place.
6. abnormal voltage pick-up unit according to claim 1 is characterized in that: also be connected with on the described master chip abnormal signal output and the display device reported or/and sound source.
7. abnormal voltage pick-up unit according to claim 6 is characterized in that: described display device is to turn round the LED lamp in the electric equipment products or/and timing LED lamp.
8. abnormal voltage pick-up unit according to claim 6 is characterized in that: described sound source is the hummer that is connected on the master chip.
9. abnormal voltage pick-up unit according to claim 1 is characterized in that: described voltage detecting and comparator circuit comprise divider resistance R1, R2, R3, R4 and comparer.
10. abnormal voltage pick-up unit according to claim 1 is characterized in that: described electric power loop comprises interchange AC power supplies, transformer T1, bridge rectifier D B1, smoothing capacity C1 and 5V mu balanced circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201951117U CN201522520U (en) | 2009-09-18 | 2009-09-18 | Abnormal voltage detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201951117U CN201522520U (en) | 2009-09-18 | 2009-09-18 | Abnormal voltage detector |
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| Publication Number | Publication Date |
|---|---|
| CN201522520U true CN201522520U (en) | 2010-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009201951117U Expired - Lifetime CN201522520U (en) | 2009-09-18 | 2009-09-18 | Abnormal voltage detector |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102478285A (en) * | 2010-11-25 | 2012-05-30 | Lg电子株式会社 | Air conditioner and method for controlling the same |
| CN102651614A (en) * | 2011-02-28 | 2012-08-29 | 株式会社理光 | Constant voltage power supply device |
| CN109557358A (en) * | 2017-09-27 | 2019-04-02 | 河南华盛隆源电气有限公司 | A kind of route has pressure decompression detection determination method |
| CN110927614A (en) * | 2019-12-12 | 2020-03-27 | 中车大连电力牵引研发中心有限公司 | Network voltage interruption detection method for single-phase four-quadrant rectifier |
| CN113643239A (en) * | 2021-07-15 | 2021-11-12 | 上海交通大学 | Abnormity detection method, device and medium based on memory mechanism |
-
2009
- 2009-09-18 CN CN2009201951117U patent/CN201522520U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102478285A (en) * | 2010-11-25 | 2012-05-30 | Lg电子株式会社 | Air conditioner and method for controlling the same |
| CN102478285B (en) * | 2010-11-25 | 2014-07-30 | Lg电子株式会社 | Air conditioner and method for controlling the same |
| CN102651614A (en) * | 2011-02-28 | 2012-08-29 | 株式会社理光 | Constant voltage power supply device |
| CN109557358A (en) * | 2017-09-27 | 2019-04-02 | 河南华盛隆源电气有限公司 | A kind of route has pressure decompression detection determination method |
| CN110927614A (en) * | 2019-12-12 | 2020-03-27 | 中车大连电力牵引研发中心有限公司 | Network voltage interruption detection method for single-phase four-quadrant rectifier |
| CN113643239A (en) * | 2021-07-15 | 2021-11-12 | 上海交通大学 | Abnormity detection method, device and medium based on memory mechanism |
| CN113643239B (en) * | 2021-07-15 | 2023-10-27 | 上海交通大学 | Abnormality detection method, device and medium based on memory mechanism |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100707 |