CN105391026A - Overvoltage alarm - Google Patents
Overvoltage alarm Download PDFInfo
- Publication number
- CN105391026A CN105391026A CN201510954817.7A CN201510954817A CN105391026A CN 105391026 A CN105391026 A CN 105391026A CN 201510954817 A CN201510954817 A CN 201510954817A CN 105391026 A CN105391026 A CN 105391026A
- Authority
- CN
- China
- Prior art keywords
- voltage
- input
- resistance
- electrically connected
- piezo
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/20—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention provides an overvoltage alarm. The overvoltage alarm comprises an input voltage and an electricity load, a reaction unit and an alarm unit, wherein the input voltage is electrically connected with the electricity load; the reaction unit is capable of timely giving protection reaction when the voltage is instantaneously high; and the alarm nit is capable of alarming to prompt the instantaneous high voltage. The overvoltage alarm has the benefits of rapidly responding when the voltage in the circuits is instantaneously high, protecting the electricity load from breakdown by high voltage, giving alarms, feeding back the frequencies with high voltage, and helping to adjusting the circuits.
Description
Technical field
The invention belongs to voltage monitoring warning device field, especially relate to a kind of over voltage alarm device.
Background technology
Piezo-resistance is the overpressure-proof type semiconductor element with nonlinear wind vibration; it is the over-pressure safety device of electronic product; there is the function preventing the instantaneous overvoltage such as surge current and thunder and lightning damage electric loading; but the overvoltage protector in existing electronic device does not often possess timely warning function; be difficult to remind overpressure situation to occur in time; user is difficult to the frequency knowing overpressure situation generation, can not obtain feedback result in time and check on this basis and regulating circuit.
Summary of the invention
In view of this, the present invention is intended to propose a kind of over voltage alarm device, when voltage transient is too high in circuit, can respond fast, and timely protection electric loading is not by too high voltage breakdown and give the alarm, and the frequency that feedback voltage is too high, helps Circuit tuning.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of over voltage alarm device, comprise electrical connection input voltage and by electric loading, also comprise the reaction member that can make protective reaction when voltage transient is excessive in time and the excessive alarm unit of alarm voltage transient.
Further, described reaction member comprises piezo-resistance RV, fuse FU and push-button switch S, the input of described piezo-resistance RV and output are connected with the positive pole of described input voltage and negative electricity respectively, and described fuse FU and described push-button switch S is electrically connected between the positive pole of described input voltage and the input of described piezo-resistance RV after connecting.
Further, described alarm unit comprises controllable silicon SCR, electromagnetic relay K, buzzer and light-emitting diode D1, the anode of described controllable silicon SCR and negative electrode are electrically connected with the input of described piezo-resistance RV and the input of described electromagnetic relay K respectively, between the output being electrically connected on described electromagnetic relay K after described buzzer and light-emitting diode D1 connect and the negative pole of described input voltage.
Further, the control pole of described controllable silicon SCR is electrically connected to the input of described piezo-resistance by charging capacitor C1.
Further, the normally closed switch KM-1 being controlled by described electromagnetic relay K is electrically connected with between the output of described electric loading and the negative pole of described input voltage.
Relative to prior art, over voltage alarm utensil of the present invention has following advantage:
After closed push-button switch S of the present invention, once there is overvoltage phenomenon, the piezo-resistance RV of reaction member of the present invention can input voltage instantaneous too high time make protective reaction, absorb the spike of overvoltage, reduce to flow through the electric current by electric loading, charge to charging capacitor C1 simultaneously, electric discharge after charging capacitor C1 charges, the control electrode conductance of the controllable silicon SCR of the alarm unit be electrically connected with it leads to, controllable silicon SCR conduction is opened, electromagnetic relay K, buzzer and light-emitting diode D1 are conducted, buzzer and light-emitting diode D1 send buzzing warning and luminous alarm respectively, user can sum up problem according to the frequency of warning circuit overpressure situation, timely Circuit tuning, the normally closed switch KM-1 being controlled by electromagnetic relay K disconnects, ensure now to disconnect with the energized circuit of electric loading and input voltage, protection electric loading is not punctured by too high electric current, once the scope of circuit overvoltage exceed piezo-resistance RV bear the limit, excessive electric current can fuse wire FU, disconnects the electrical connection in whole loop.
Accompanying drawing explanation
The accompanying drawing forming a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is embodiment of the present invention electrical block diagram.
Description of reference numerals:
1-input voltage, 2-electric loading, 3-reaction member, 4-alarm unit.
Embodiment
It should be noted that, when not conflicting, the embodiment in the present invention and the feature in embodiment can combine mutually.
Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
As shown in Figure 1, the invention provides a kind of over voltage alarm device, comprise electrical connection input voltage 1 and by electric loading 2, also comprise the reaction member 3 that can make protective reaction when voltage transient is excessive in time and the excessive alarm unit 4 of alarm voltage transient.
Described reaction member 3 comprises piezo-resistance RV, fuse FU and push-button switch S, the input of described piezo-resistance RV and output are connected, between the positive pole that described fuse FU and described push-button switch S is electrically connected on described input voltage 1 after connecting and the input of described piezo-resistance RV with the positive pole of described input voltage 1 and negative electricity respectively.
Described alarm unit 4 comprises controllable silicon SCR, electromagnetic relay K, buzzer and light-emitting diode D1, the anode of described controllable silicon SCR and negative electrode are electrically connected with the input of described piezo-resistance RV and the input of described electromagnetic relay K respectively, between the output being electrically connected on described electromagnetic relay K after described buzzer and light-emitting diode D1 connect and the negative pole of described input voltage 1.
The control pole of described controllable silicon SCR is electrically connected to the input of described piezo-resistance by charging capacitor C1.
The normally closed switch KM-1 being controlled by described electromagnetic relay K is electrically connected with between the output of described electric loading 2 and the negative pole of described input voltage 1.
The course of work of this example: after closed push-button switch S of the present invention, once there is overvoltage phenomenon, the piezo-resistance RV of reaction member 3 of the present invention can input voltage instantaneous too high time make protective reaction, absorb the spike of overvoltage, reduce to flow through the electric current by electric loading 2, charge to charging capacitor C1 simultaneously, electric discharge after charging capacitor C1 charges, the control electrode conductance of the controllable silicon SCR of the alarm unit 4 be electrically connected with it leads to, controllable silicon SCR conduction is opened, electromagnetic relay K, buzzer and light-emitting diode D1 are conducted, buzzer and light-emitting diode D1 send buzzing warning and luminous alarm respectively, the normally closed switch KM-1 being simultaneously controlled by electromagnetic relay K disconnects, ensure now to disconnect with the energized circuit of electric loading 2 and input voltage 1, protection electric loading 2 is not punctured by too high electric current, once the scope of circuit overvoltage exceed piezo-resistance RV bear the limit, excessive electric current can fuse wire FU, disconnects the electrical connection in whole loop
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. an over voltage alarm device, is characterized in that: comprise electrical connection input voltage and by electric loading, also comprise the reaction member that can make protective reaction when voltage transient is excessive in time and the excessive alarm unit of alarm voltage transient.
2. over voltage alarm device according to claim 1, it is characterized in that: described reaction member comprises piezo-resistance (RV), fuse (FU) and push-button switch (S), the input of described piezo-resistance (RV) and output are connected with the positive pole of described input voltage and negative electricity respectively, are electrically connected between the positive pole of described input voltage and the input of described piezo-resistance (RV) after described fuse (FU) and described push-button switch (S) series connection.
3. over voltage alarm device according to claim 2, it is characterized in that: described alarm unit comprises controllable silicon (SCR), electromagnetic relay (K), buzzer and light-emitting diode (D1), the anode of described controllable silicon (SCR) and negative electrode are electrically connected with the input of described piezo-resistance (RV) and the input of described electromagnetic relay (K) respectively, between the output that described buzzer and light-emitting diode (D1) are electrically connected on described electromagnetic relay (K) after connecting and the negative pole of described input voltage.
4. over voltage alarm device according to claim 3, is characterized in that: the control pole of described controllable silicon (SCR) is electrically connected to the input of described piezo-resistance by charging capacitor (C1).
5. over voltage alarm device according to claim 3, is characterized in that: be electrically connected with the normally closed switch (KM-1) being controlled by described electromagnetic relay (K) between the output of described electric loading and the negative pole of described input voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510954817.7A CN105391026A (en) | 2015-12-15 | 2015-12-15 | Overvoltage alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510954817.7A CN105391026A (en) | 2015-12-15 | 2015-12-15 | Overvoltage alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105391026A true CN105391026A (en) | 2016-03-09 |
Family
ID=55422995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510954817.7A Pending CN105391026A (en) | 2015-12-15 | 2015-12-15 | Overvoltage alarm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105391026A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2286537Y (en) * | 1995-03-08 | 1998-07-22 | 杨福真 | Excess voltage protector for power supply |
| CN2473791Y (en) * | 2001-03-23 | 2002-01-23 | 烟台玛斯特电气有限公司 | Over voltage protector |
| EP1267468A2 (en) * | 2001-06-15 | 2002-12-18 | Circuit Breaker Industries Limited | Surge protective device |
| CN2914443Y (en) * | 2006-06-20 | 2007-06-20 | 烽火通信科技股份有限公司 | Surge protector of AC power supply |
| CN202906436U (en) * | 2012-11-19 | 2013-04-24 | 重庆盾之王实业有限公司 | Overvoltage automatic power off protector |
| CN103368157A (en) * | 2012-04-06 | 2013-10-23 | 上海微电子装备有限公司 | Surge protection device |
| CN204697310U (en) * | 2015-05-26 | 2015-10-07 | 苏州福利恒电子科技有限公司 | A kind of electric blanket circuit with defencive function |
-
2015
- 2015-12-15 CN CN201510954817.7A patent/CN105391026A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2286537Y (en) * | 1995-03-08 | 1998-07-22 | 杨福真 | Excess voltage protector for power supply |
| CN2473791Y (en) * | 2001-03-23 | 2002-01-23 | 烟台玛斯特电气有限公司 | Over voltage protector |
| EP1267468A2 (en) * | 2001-06-15 | 2002-12-18 | Circuit Breaker Industries Limited | Surge protective device |
| CN2914443Y (en) * | 2006-06-20 | 2007-06-20 | 烽火通信科技股份有限公司 | Surge protector of AC power supply |
| CN103368157A (en) * | 2012-04-06 | 2013-10-23 | 上海微电子装备有限公司 | Surge protection device |
| CN202906436U (en) * | 2012-11-19 | 2013-04-24 | 重庆盾之王实业有限公司 | Overvoltage automatic power off protector |
| CN204697310U (en) * | 2015-05-26 | 2015-10-07 | 苏州福利恒电子科技有限公司 | A kind of electric blanket circuit with defencive function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160309 |
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| RJ01 | Rejection of invention patent application after publication |