CN201266410Y - Alarm device - Google Patents
Alarm device Download PDFInfo
- Publication number
- CN201266410Y CN201266410Y CNU2008201327379U CN200820132737U CN201266410Y CN 201266410 Y CN201266410 Y CN 201266410Y CN U2008201327379 U CNU2008201327379 U CN U2008201327379U CN 200820132737 U CN200820132737 U CN 200820132737U CN 201266410 Y CN201266410 Y CN 201266410Y
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- circuit
- alarm
- warning
- warning device
- switch member
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Abstract
The utility model discloses an alarm device, comprising a power supply circuit. The alarm device further comprises an alarm circuit for emitting an alarm; a switch part which is respectively connected with the power supply circuit and the alarm circuit and controls the alarm circuit to emit the alarm according to a received external optical signal and/or electric signal. The alarm device has simple circuit, low cost and wide usage and can emit the alarm by receiving the trigger of the optical and/or electric signal, thereby being capable of preventing electrical equipment from being detached illegally and preventing electrification of an outer shell of the electrical equipment; and the alarm device is applicable to the interior of the electrical equipment with better opacity.
Description
Technical field
The utility model relates to the opto-electronic conversion field, particularly a kind of warning device.
Background technology
Existing light alarm substantially all is to adopt optical sensor to respond to light source, and photodiode is the most frequently used optical sensor.Photodiode is worked under back-biased duty, unglazed according to the time, the same with general-purpose diode, inverse current very little (electric current is less than 1 μ A) is called the dark current of photodiode; When illumination was arranged, the charge carrier of described photodiode was excited, and produced electronics and hole, was called photocurrent carrier.Described photocurrent carrier participates in conduction under the effect of electric field outside, forms the inverse current more much bigger than dark current, and this inverse current is called photocurrent, makes the warning circuit of described light alarm start, and gives the alarm.
The size of described photocurrent is directly proportional with intensity of illumination, the problem that exists in the optical sensor is that the power of light signal is bigger to the influence of electric signal, when light signal is unstable, the voltage of output will be unstable, make described optical sensor can not well play the effect of switch, and need the illumination of duration just can get a desired effect.
Summary of the invention
One of the purpose of this utility model makes this alarm device when receiving light and/or electric signal for a kind of warning device is provided, and gives the alarm, and has watchful effect.
The utility model provides a kind of warning device, comprises power circuit, also comprises:
Warning circuit gives the alarm;
Switch member is connected with power circuit and warning circuit respectively, according to receiving outside light signal and/or electric signal, controls described warning circuit and gives the alarm.
Alarm device of the present utility model by the switch member that receives light and/or electric signal is set, makes described warning device can both give the alarm when receiving light and/or electric signal.
Description of drawings
Fig. 1 is the utility model first embodiment warning device structural representation;
Fig. 2 is the utility model second embodiment warning device structural representation.
The realization of the utility model purpose, functional characteristics and advantage will be in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
The utility model provides a kind of warning device, can give the alarm after receiving light and/or electric signal.
With reference to Fig. 1, a kind of warning device of the utility model first embodiment is proposed, comprise power circuit 11 and warning circuit 13, also comprise:
Described power circuit 11 comprises voltage stabilizing and rectifier cell, can provide stable operating voltage for warning device.
Described warning circuit 13 is connected with described power circuit 11 by switch member 12, and behind described switch member 12 receiving optical signals and/or electric signal, described power circuit 11 and described warning circuit 13 conductings make described warning circuit 13 give the alarm.
The present embodiment warning device can receive light and/or electric signal, gives the alarm.
The utility model second embodiment is based on above-mentioned first embodiment and proposes; with reference to Fig. 2; a kind of warning device is provided; this warning device also comprises holding circuit 14 on the basis of first embodiment; be used to absorb the surge voltage of described switch member 12; protect described switch member 12, make described warning device have better effect.Described surge voltage is meant owing to reasons such as jumbo electrical equipment are switched on or switched off, forms high-tension phenomenon in the short time in circuit.
Present embodiment, described switch member 12 is an example with the dual-purpose thyristor of photoelectricity, and the utility model is further specified.
The described warning device of present embodiment can be applied to hinder photosensitiveness consumer inside preferably; The power circuit 11 of described alarm device is connected with the power supply of described consumer, comprises the commutation diode, the resistance that is used for the current limliting step-down that are used for rectification, is used for the electric capacity of filtering and is used for diode of voltage stabilizing etc.; The stable DC electricity that this power circuit 11 can be exported about 9V uses for described warning device.
The dual-purpose thyristor of the described photoelectricity of present embodiment comprises anode, negative electrode, the control utmost point etc., and described anode is connected with negative pole with the positive pole of described power circuit 11 respectively with negative electrode, and the described control utmost point is connected with the shell of consumer; When the outer casing electrification of described consumer, the described control utmost point is owing to the electric signal that receives outer casing electrification is triggered the dual-purpose thyristor conducting of described photoelectricity; Perhaps, when the shell of described consumer is opened, the dual-purpose thyristor of described photoelectricity receives illumination, under the exciting of luminous energy, produces a large amount of electronics and hole, makes the dual-purpose thyristor conducting of this photoelectricity.
Described holding circuit 14 is connected with the dual-purpose thyristor of described photoelectricity, and this connection can be in parallel; Described holding circuit 14 can comprise elements such as electric capacity and resistance for RC absorbs circuit, absorbs the surge voltage in the warning device circuit, protects the dual-purpose thyristor of described photoelectricity.
Described warning circuit 13 is connected with the dual-purpose thyristor of described photoelectricity, and this connection can be series connection; Described warning circuit 13 comprises 555 timing circuits 131 and attention device 132; Described warning circuit 13 can constitute multivibrator, after the dual-purpose thyristor conducting of described photoelectricity, produces rect.p.; Described attention device 132 is hummer in the present embodiment, is connected with described 555 timing circuits 131, receives described rect.p., gives the alarm.
The present embodiment warning device also is provided with switch, because can automatic cutout after the dual-purpose thyristor conducting of the described photoelectricity of present embodiment, therefore need to use switch, with the circuit breaker of warning device, make hummer stop to give the alarm; After hummer stops to give the alarm, can use the circuit turn-on of switch with warning device.Described switch can be arranged between described power circuit 11 and the dual-purpose thyristor of photoelectricity.
The described warning device of present embodiment, circuit is simple, cost is low and of many uses; Described warning device can be applied to the higher environment of humidity, when the internal circuit of consumer is subjected to wet, is easy to take place the situation of zero line and live wire short circuit, at this moment, owing to produced light signal, can trigger the dual-purpose thyristor conducting of photoelectricity, gives the alarm; When electrical appliance breaks down, not keep in repair if there is outage just to take consumer apart, the irradiation of outside is gone into making the dual-purpose thyristor conducting of photoelectricity, gives the alarm; Also can prevent the illegal dismounting of thief and give the alarm; Outer casing electrification for consumer also can give the alarm.
Connection in this embodiment is all electric connection.
The above only is a preferred embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model instructions and accompanying drawing content to be done; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.
Claims (6)
1, a kind of warning device comprises power circuit, it is characterized in that, also comprises:
Warning circuit gives the alarm;
Switch member is connected with power circuit and warning circuit respectively, according to receiving outside light signal and/or electric signal, controls described warning circuit and gives the alarm.
2, warning device according to claim 1 is characterized in that, described switch member is the dual-purpose thyristor of photoelectricity.
3, warning device according to claim 1 is characterized in that, also comprises:
Holding circuit is connected with described switch member, absorbs the surge voltage in the switch member institute connecting circuit, protects described switch member.
4, warning device according to claim 3 is characterized in that, described holding circuit is that RC absorbs circuit.
5, according to the wherein any described warning device of claim 1 to 4, it is characterized in that described warning circuit comprises:
555 timing circuits and attention device are respectively applied for the formation multi-harmonic-oscillations, produce pulse and give the alarm.
6, warning device according to claim 5 is characterized in that, described attention device is a hummer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201327379U CN201266410Y (en) | 2008-08-12 | 2008-08-12 | Alarm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201327379U CN201266410Y (en) | 2008-08-12 | 2008-08-12 | Alarm device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201266410Y true CN201266410Y (en) | 2009-07-01 |
Family
ID=40832784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201327379U Expired - Fee Related CN201266410Y (en) | 2008-08-12 | 2008-08-12 | Alarm device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201266410Y (en) |
-
2008
- 2008-08-12 CN CNU2008201327379U patent/CN201266410Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090701 Termination date: 20150812 |
|
| EXPY | Termination of patent right or utility model |