CN204990557U - Adopt alarm system of reputation early warning design - Google Patents
Adopt alarm system of reputation early warning design Download PDFInfo
- Publication number
- CN204990557U CN204990557U CN201520735831.3U CN201520735831U CN204990557U CN 204990557 U CN204990557 U CN 204990557U CN 201520735831 U CN201520735831 U CN 201520735831U CN 204990557 U CN204990557 U CN 204990557U
- Authority
- CN
- China
- Prior art keywords
- transistor
- resistance
- early warning
- electric capacity
- circuit
- 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.)
- Expired - Fee Related
Links
Landscapes
- Led Devices (AREA)
Abstract
The utility model discloses an adopt alarm system of reputation early warning design, including light early warning circuit and sound early warning circuit, light early warning circuit connection sound early warning circuit, light early warning circuit includes resistance R6, emitting diode LED1, emitting diode LED2, resistance R7 and transistor Q4, sound early warning circuit is connecting resistance R6's first end respectively, resistance R7's first end, resistance R6's second end is connected with transistor Q4's first end through emitting diode LED1 and the emitting diode LED2 who establishes ties each other, transistor Q4's second end is connected with resistance R7's second end, not transistor Q4's third termination ground, it is simple relatively to design a structure, nevertheless has the early warning function, utilizes the synchronous mode of reminding of sound and light to carry out the system that reports to the police, under the condition of the sound pest in the protected area or toy incomparable to driveeing out, utilizes the lofty nature of light to frighten pest or toy walk.
Description
Technical field
The utility model relates to the technical fields such as electronics science, acoustics, optics, specifically, is a kind of warning system adopting acousto-optic early warning to design.
Background technology
555 timers (during NE555 base chip) cost is low, and dependable performance only needs external several resistance, electric capacity, just can realize multivibrator, monostalbe trigger and Schmidt trigger isopulse and produce and translation circuit.
Its inside comprises two voltage comparators, three equivalent series resistances, a rest-set flip-flop, a discharge tube T and power output stage.It provides two reference voltage V CC/3 and 2VCC/3.
The function of 555 timers determines primarily of two comparers.The output voltage control rest-set flip-flop of two comparers and the state of discharge tube.Between power supply and ground, add voltage, when 5 pin are unsettled, then the voltage of the in-phase input end of voltage comparator I is 2VCC/3, and the voltage of the inverting input of voltage comparator II is VCC/3.If the voltage of trigger input TR is less than VCC/3, then the output of voltage comparator II is 0, rest-set flip-flop can be made to put 1, make output terminal OUT=1.If the voltage of threshold value input TH is greater than 2VCC/3, the voltage of TR end is greater than VCC/3 simultaneously, then the output of voltage comparator I is 0, and the output of voltage comparator II is 1, rest-set flip-flop can be set to 0, and makes output be low level.
Warning circuit, and appearance harm or after testing after, just by the device that automatically carries out reporting to the police or equipment or circuit after there is exceeding the situation of reservation threshold, and existing warning circuit or equipment design the effect that too simply can not play early warning often; Or adopt high cost investment to design the extremely powerful warning circuit of function, make this kind of circuit intelligence for places such as such as fire-fighting, interlock management and control, and the place such as prompting of insect, toy can not be used for.
Utility model content
The purpose of this utility model is to provide a kind of warning system adopting acousto-optic early warning to design; design a kind of structure relatively simple; but there is early warning and alarming function; the mode utilizing sound and light synchronously to remind carries out the system of reporting to the police; when sound is not enough to expel insect in institute protection zone or toy; utilize the lofty property of light insect or toy scaring can be walked, its scientific and reasonable principle of work is functional with practicality, is subject to liking of numerous users.
The utility model is achieved through the following technical solutions: a kind of warning system adopting acousto-optic early warning to design, comprises light early warning circuit and sound early warning circuit, and described light early warning circuit connects sound early warning circuit; Described light early warning circuit comprises resistance R6, LED 1, LED 2, resistance R7 and transistor Q4, described sound early warning circuit is the first end of contact resistance R6, the first end of resistance R7 respectively, second end of described resistance R6 is connected with the first end of LED 2 with transistor Q4 by the LED 1 of series connection mutually, second end of described transistor Q4 is connected with second end of resistance R7, the 3rd end ground connection of described transistor Q4.
Further for better to realize the utility model, acoustic pattern can be adopted to carry out early warning, be provided with following structure especially: described sound early warning circuit is primarily of piezoelectric transduction circuit, time base circuit, audio frequency processing circuit composition, described piezoelectric transduction circuit connects time base circuit, and described time base circuit connects audio frequency processing circuit; The first end of described resistance R6, the first end of resistance R7 are all connected with audio frequency processing circuit.
Further for better to realize the utility model, be provided with following structure especially: described piezoelectric transduction circuit comprises piezoelectric buzzer HTD, transistor Q1, resistance R2 and electric capacity C1, first end second end of contact resistance R1 and second end of transistor Q1 respectively of described piezoelectric buzzer HTD, second end of described piezoelectric buzzer HTD and the three-terminal link of transistor Q1; The first end of described transistor Q1 is connected with the first end of second end of resistance R1, the first end of resistance R2 and electric capacity C1 respectively, and the 3rd end of the first end of described resistance R2, second end of electric capacity C1 and transistor Q1 is all connected with time base circuit.
Further for better to realize the utility model, be provided with following structure especially: base chip IC, electric capacity C2, potentiometer W, electric capacity C3, resistance R4, resistance R5, inductance L and electric capacity C4 when described time base circuit comprises, 4 pin of base chip IC and 8 pin short circuits time described; Time described, 2 pin of base chip IC connect second end of electric capacity C1, and time described, 5 pin of base chip IC are by electric capacity C2 ground connection, and time described, 6 pin of base chip IC are by electric capacity C3 ground connection, time described base chip IC 6 pin by potentiometer W with time base chip 8 pin be connected; The first end of 3 pin contact resistance R4 of base chip IC time described, the first end of the second end contact resistance R5 of described resistance R4, second end of described resistance R5 connects the first end of inductance L, and the second end of described inductance L connects the first end of electric capacity C4, the second end ground connection of described electric capacity C4.
Further for better to realize the utility model, be provided with following structure especially: described audio frequency processing circuit comprises transistor Q2, transistor Q3, electric capacity C5 and loudspeaker B, the first end of described transistor Q2 is connected with second end of transistor Q3, the first end of described transistor Q3 is connected with the first end of resistance R4, and the first end of described resistance R5 passes through the three-terminal link of electric capacity C5 and transistor Q3; Second end of described transistor Q2 connects the first end of inductance L, the 3rd end ground connection of described transistor Q2; 3rd end of described transistor Q3 is connected with speaker circuit; 3rd end of described transistor Q3 is connected with the first end of loudspeaker B, the second end ground connection of described loudspeaker B; The first end of described resistance R6 is connected with the first end of transistor Q3, the first end of described resistance R7 and the three-terminal link of transistor Q3.
Further for better to realize the utility model, be provided with following structure especially: also comprise feed circuit, described feed circuit comprise power supply DC and K switch 1, the minus earth of described power supply DC, and the positive pole of power supply DC is connected by 4 pin of K switch 1 and the timely base chip IC of the first end of resistance R2 and 8 pin.
Further for better to realize the utility model, be provided with following structure especially: the positive pole of described LED 1 is connected with second end of resistance R6; The negative pole of described LED 1 is connected with the positive pole of LED 2, and the negative pole of LED 2 is connected with the first end of transistor Q4; 1 pin ground connection of base chip IC time described, and time 6 pin of base chip IC and 7 pin short circuits.
Further for better to realize the utility model, be provided with following structure especially: described electric capacity C1, electric capacity C3, electric capacity C4 are electrochemical capacitor, and the positive pole of electric capacity C1 is connected with the first end of transistor Q1, the positive pole of electric capacity C3 with time base chip IC 6 pin be connected, the positive pole of electric capacity C4 is connected with the second end of inductance L.
Further for better to realize the utility model, be provided with following structure especially: the first end of described transistor Q1, transistor Q2, transistor Q3 and transistor Q4, the second end and the 3rd end are collector, base stage and emitter all respectively.
Further for better to realize the utility model, be provided with following structure especially: described inductance L is core inductance.
The utility model compared with prior art, has the following advantages and beneficial effect:
It is relatively simple that the utility model designs a kind of structure; but there is early warning and alarming function; the mode utilizing sound and light synchronously to remind carries out the system of reporting to the police; when sound is not enough to expel insect in institute protection zone or toy; utilize the lofty property of light insect or toy scaring can be walked; its scientific and reasonable principle of work is functional with practicality, is subject to liking of numerous users.
The utility model adopts light emitting diode as light launcher, and its superpower luminosity and ultralow power consumption, can make whole system when energy-conserving and environment-protective, not lose its serviceability.
The utility model adopts piezoelectric buzzer to carry out acoustic control early warning, can effectively to whole system put the beings such as insect in place or toy and carry out scaring prompting, the protected animals and plants in region are not damaged by insect or toy.
When the utility model utilizes, base chip composition oscillatory circuit, effectively can control phonation time, avoid occurring long-term sounding, affect the rest of surrounding user.
Accompanying drawing explanation
Fig. 1 is fundamental diagram of the present utility model.
Embodiment
Below in conjunction with embodiment, the utility model is described in further detail, but embodiment of the present utility model is not limited thereto.
Embodiment 1:
A kind of warning system adopting acousto-optic early warning to design, design a kind of structure relatively simple, but there is early warning and alarming function, the mode utilizing sound and light synchronously to remind carries out the system of reporting to the police, when sound is not enough to expel insect in institute protection zone or toy, utilize the lofty property of light insect or toy scaring can be walked, its scientific and reasonable principle of work is functional with practicality, be subject to liking of numerous users, as shown in Figure 1, be provided with following structure especially: comprise light early warning circuit and sound early warning circuit, described light early warning circuit connects sound early warning circuit, described light early warning circuit comprises resistance R6, LED 1, LED 2, resistance R7 and NPN triode Q4, described sound early warning circuit is the first end of contact resistance R6, the first end of resistance R7 respectively, second end of described resistance R6 is connected with the collector of LED 2 with NPN triode Q4 by the LED 1 of series connection mutually, the base stage of described NPN triode Q4 is connected with second end of resistance R7, the grounded emitter of described NPN triode Q4.
Embodiment 2:
The present embodiment is at the enterprising one-step optimization in the basis of above-described embodiment, further for better to realize the utility model, acoustic pattern can be adopted to carry out early warning, as shown in Figure 1, be provided with following structure especially: described sound early warning circuit is primarily of piezoelectric transduction circuit, time base circuit, audio frequency processing circuit composition, described piezoelectric transduction circuit connects time base circuit, and described time base circuit connects audio frequency processing circuit; The first end of described resistance R6, the first end of resistance R7 are all connected with audio frequency processing circuit.
Embodiment 3:
The present embodiment is at the enterprising one-step optimization in the basis of above-described embodiment, further for better to realize the utility model, as shown in Figure 1, be provided with following structure especially: described piezoelectric transduction circuit comprises piezoelectric buzzer HTD, NPN triode Q1, resistance R2 and electrochemical capacitor C1, first end second end of contact resistance R1 and the base stage of NPN triode Q1 respectively of described piezoelectric buzzer HTD, second end of described piezoelectric buzzer HTD is connected with the emitter of NPN triode Q1; The collector of described NPN triode Q1 is connected with the positive pole of second end of resistance R1, the first end of resistance R2 and electrochemical capacitor C1 respectively, and the emitter of the first end of described resistance R2, the negative pole of electrochemical capacitor C1 and NPN triode Q1 is all connected with time base circuit.
Embodiment 4:
The present embodiment is at the enterprising one-step optimization in the basis of above-described embodiment, further for better to realize the utility model, as shown in Figure 1, be provided with following structure especially: base chip IC, electric capacity C2, potentiometer W, electrochemical capacitor C3, resistance R4, resistance R5, inductance L and electrochemical capacitor C4 when described time base circuit comprises NE555,4 pin of base chip IC and 8 pin short circuits during described NE555; During described NE555,2 pin of base chip IC connect the negative pole of electrochemical capacitor C1, during described NE555,5 pin of base chip IC are by electric capacity C2 ground connection, during described NE555,6 pin of base chip IC are by electrochemical capacitor C3 ground connection, and during NE555,6 pin of base chip IC connect the positive pole of electrochemical capacitor C3; During described NE555 base chip IC 6 pin by potentiometer W with time base chip 8 pin be connected; The first end of 3 pin contact resistance R4 of base chip IC during described NE555, the first end of the second end contact resistance R5 of described resistance R4, second end of described resistance R5 connects the first end of inductance L, and the second end of described inductance L connects the positive pole of electric capacity C4, the minus earth of described electric capacity C4.
NE555 is a kind of model wherein of the timing IC belonging to 555 series, the pin function of 555 serial IC and to use be all compatible, just model different because of its price its degree of stability different, power saving, producible oscillation frequency also not quite identical; And 555 are one and have many uses and quite general timing IC, only need resistance and the electric capacity of minority, just can produce the pulse wave signal of the various different frequencies needed for digit circuit.
Each pin function of NE555 is as follows:
Pin1 (ground connection)-ground wire (or common ground), is connected to circuit common ground usually.
Pin2 (trigger point)-this pin position triggers NE555 to make it start its time cycle.Trigger pip upper limb voltage must be greater than 2/3VCC, and lower edge must lower than 1/3VCC.
Pin3 (output)-start the output pin position of 555 when the time cycle, moves to the noble potential of fewer than supply voltage 1.7 volts.The end in cycle exports the electronegative potential getting back to O volt left and right.The about 200mA of maximum output current when noble potential.
Pin4 (replacement)-one low logic level can reset timer and make output get back to an electronegative potential when delivering to this pin position.It is usually connected to positive supply or ignores need not.
Pin5 (control)-this pin permits being changed by external voltage triggering and lock voltage limit.When timer operation is under function mode that is stable or that vibrate, this input can be used for changing or adjustment output frequency.
Pin6 (resetting locking)-Pin6 resets and locks and make output be low state.When this pin voltage from 1/3VCC voltage to be displaced downwardly to more than 2/3VCC time start this action.
Pin7 (electric discharge)-this pin and main output connecting pin have identical current output capability, when output is for being LOW during ON, are Low ESR over the ground, when output is for being HIGH during OFF, are high impedance over the ground.
Pin8 (V+)-this is the positive voltage end of 555 timer IC.The scope of supply voltage is+4.5 volts (minimum value) to+16 volts (maximal value).
Embodiment 5:
The present embodiment is at the enterprising one-step optimization in the basis of above-described embodiment, further for better to realize the utility model, as shown in Figure 1, be provided with following structure especially: described audio frequency processing circuit comprises NPN triode Q2, NPN triode Q3, electric capacity C5 and loudspeaker B, the collector of described NPN triode Q2 is connected with the base stage of NPN triode Q3, the collector of described NPN triode Q3 is connected with the first end of resistance R4, and the first end of described resistance R5 is connected with the emitter of NPN triode Q3 by electric capacity C5; The base stage of described NPN triode Q2 connects the first end of inductance L, the grounded emitter of described NPN triode Q2; The emitter of described NPN triode Q3 is connected with speaker circuit; The emitter of described NPN triode Q3 is connected with the positive pole of loudspeaker B, the minus earth of described loudspeaker B; The first end of described resistance R6 is connected with the collector of NPN triode Q3, and the first end of described resistance R7 is connected with the emitter of NPN triode Q3.
Embodiment 6:
The present embodiment is at the enterprising one-step optimization in the basis of above-described embodiment, further for better to realize the utility model, as shown in Figure 1, be provided with following structure especially: also comprise feed circuit, described feed circuit comprise power supply DC and K switch 1, the minus earth of described power supply DC, and the positive pole of power supply DC is connected by 4 pin of K switch 1 and the timely base chip IC of the first end of resistance R2 and 8 pin.
Embodiment 7:
The present embodiment is at the enterprising one-step optimization in the basis of above-described embodiment, further for better to realize the utility model, as shown in Figure 1, is provided with following structure especially: the positive pole of described LED 1 is connected with second end of resistance R6; The negative pole of described LED 1 is connected with the positive pole of LED 2, and the negative pole of LED 2 is connected with the collector of NPN triode Q4; 1 pin ground connection of base chip IC time described, and time 6 pin of base chip IC and 7 pin short circuits.
The above; it is only preferred embodiment of the present utility model; not do any pro forma restriction to the utility model, every any simple modification, equivalent variations done above embodiment according to technical spirit of the present utility model, all falls within protection domain of the present utility model.
Claims (10)
1. the warning system adopting acousto-optic early warning to design, is characterized in that: comprise light early warning circuit and sound early warning circuit, and described light early warning circuit connects sound early warning circuit; Described light early warning circuit comprises resistance R6, LED 1, LED 2, resistance R7 and transistor Q4, described sound early warning circuit is the first end of contact resistance R6, the first end of resistance R7 respectively, second end of described resistance R6 is connected with the first end of LED 2 with transistor Q4 by the LED 1 of series connection mutually, second end of described transistor Q4 is connected with second end of resistance R7, the 3rd end ground connection of described transistor Q4.
2. a kind of warning system adopting acousto-optic early warning to design according to claim 1, it is characterized in that: described sound early warning circuit is primarily of piezoelectric transduction circuit, time base circuit, audio frequency processing circuit composition, described piezoelectric transduction circuit connects time base circuit, and described time base circuit connects audio frequency processing circuit; The first end of described resistance R6, the first end of resistance R7 are all connected with audio frequency processing circuit.
3. a kind of warning system adopting acousto-optic early warning to design according to claim 2, it is characterized in that: described piezoelectric transduction circuit comprises piezoelectric buzzer HTD, transistor Q1, resistance R2 and electric capacity C1, first end second end of contact resistance R1 and second end of transistor Q1 respectively of described piezoelectric buzzer HTD, second end of described piezoelectric buzzer HTD and the three-terminal link of transistor Q1; The first end of described transistor Q1 is connected with the first end of second end of resistance R1, the first end of resistance R2 and electric capacity C1 respectively, and the 3rd end of the first end of described resistance R2, second end of electric capacity C1 and transistor Q1 is all connected with time base circuit.
4. a kind of warning system adopting acousto-optic early warning to design according to claim 3, it is characterized in that: base chip IC, electric capacity C2, potentiometer W, electric capacity C3, resistance R4, resistance R5, inductance L and electric capacity C4 when described time base circuit comprises, 4 pin of base chip IC and 8 pin short circuits time described; Time described, 2 pin of base chip IC connect second end of electric capacity C1, and time described, 5 pin of base chip IC are by electric capacity C2 ground connection, and time described, 6 pin of base chip IC are by electric capacity C3 ground connection, time described base chip IC 6 pin by potentiometer W with time base chip 8 pin be connected; The first end of 3 pin contact resistance R4 of base chip IC time described, the first end of the second end contact resistance R5 of described resistance R4, second end of described resistance R5 connects the first end of inductance L, and the second end of described inductance L connects the first end of electric capacity C4, the second end ground connection of described electric capacity C4.
5. a kind of warning system adopting acousto-optic early warning to design according to claim 4, it is characterized in that: described audio frequency processing circuit comprises transistor Q2, transistor Q3, electric capacity C5 and loudspeaker B, the first end of described transistor Q2 is connected with second end of transistor Q3, the first end of described transistor Q3 is connected with the first end of resistance R4, and the first end of described resistance R5 passes through the three-terminal link of electric capacity C5 and transistor Q3; Second end of described transistor Q2 connects the first end of inductance L, the 3rd end ground connection of described transistor Q2; 3rd end of described transistor Q3 is connected with speaker circuit; 3rd end of described transistor Q3 is connected with the first end of loudspeaker B, the second end ground connection of described loudspeaker B; The first end of described resistance R6 is connected with the first end of transistor Q3, the first end of described resistance R7 and the three-terminal link of transistor Q3.
6. a kind of warning system adopting acousto-optic early warning to design according to claim 5, it is characterized in that: also comprise feed circuit, described feed circuit comprise power supply DC and K switch 1, the minus earth of described power supply DC, and the positive pole of power supply DC is connected by 4 pin of K switch 1 and the timely base chip IC of the first end of resistance R2 and 8 pin.
7. a kind of warning system adopting acousto-optic early warning to design according to claim 6, is characterized in that: the positive pole of described LED 1 is connected with second end of resistance R6; The negative pole of described LED 1 is connected with the positive pole of LED 2, and the negative pole of LED 2 is connected with the first end of transistor Q4; 1 pin ground connection of base chip IC time described, and time 6 pin of base chip IC and 7 pin short circuits.
8. a kind of warning system adopting acousto-optic early warning to design according to claim 7, it is characterized in that: described electric capacity C1, electric capacity C3, electric capacity C4 are electrochemical capacitor, and the positive pole of electric capacity C1 is connected with the first end of transistor Q1, the positive pole of electric capacity C3 with time base chip IC 6 pin be connected, the positive pole of electric capacity C4 is connected with the second end of inductance L.
9. a kind of warning system adopting acousto-optic early warning to design according to claim 8, is characterized in that: the first end of described transistor Q1, transistor Q2, transistor Q3 and transistor Q4, the second end and the 3rd end are collector, base stage and emitter all respectively.
10. a kind of warning system adopting acousto-optic early warning to design according to claim 9, is characterized in that: described inductance L is core inductance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520735831.3U CN204990557U (en) | 2015-09-22 | 2015-09-22 | Adopt alarm system of reputation early warning design |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520735831.3U CN204990557U (en) | 2015-09-22 | 2015-09-22 | Adopt alarm system of reputation early warning design |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204990557U true CN204990557U (en) | 2016-01-20 |
Family
ID=55124902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520735831.3U Expired - Fee Related CN204990557U (en) | 2015-09-22 | 2015-09-22 | Adopt alarm system of reputation early warning design |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204990557U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105139558A (en) * | 2015-09-22 | 2015-12-09 | 成都乐维斯科技有限公司 | Alarming system adopting acousto-optic early warning design |
-
2015
- 2015-09-22 CN CN201520735831.3U patent/CN204990557U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105139558A (en) * | 2015-09-22 | 2015-12-09 | 成都乐维斯科技有限公司 | Alarming system adopting acousto-optic early warning design |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE60334324D1 (en) | COMPUTER-CONTROLLED ELECTRONIC ANIMAL TRAP WITH HIGH VOLTAGE | |
| CN204155383U (en) | The anti-lost alarm of bluetooth | |
| CN204990557U (en) | Adopt alarm system of reputation early warning design | |
| CN201974894U (en) | Anti-theft alarm circuit | |
| CN102592396A (en) | Electronic early warning device for small seism | |
| CN105139558A (en) | Alarming system adopting acousto-optic early warning design | |
| CN104012495A (en) | Intelligent pairing mosquito eradication device | |
| CN103766321B (en) | A kind of transforming plant protecting Apparatus and system | |
| CN207689675U (en) | A kind of intelligence old man's positioning system | |
| CN204969111U (en) | Can be used to piezoelectricity acoustic control alarm system that early warning was reported | |
| CN108109297A (en) | A kind of alarm system designed using acousto-optic early warning | |
| CN204047743U (en) | Ultrasonic rat repellent | |
| CN104880980B (en) | A kind of sound control circuit | |
| CN203773700U (en) | Power-failure alarm device | |
| CN204215531U (en) | Based on the baby bed-wetting reminding circuit of Bluetooth transmission | |
| CN203302135U (en) | Wireless dog leash | |
| CN203673603U (en) | Household anti-theft alarm | |
| CN203748522U (en) | Transformer substation protection device and system | |
| CN202454044U (en) | Small-earthquake electronic prewarning device | |
| CN205665819U (en) | A report to police and remind circuit for avoiding theft person steals | |
| CN105145540A (en) | Piezoelectric voice control alarming system used for early warning and broadcasting | |
| CN205333747U (en) | A direct current lightning protection module for photovoltaic equipment | |
| CN204884060U (en) | Protection against electric shock warning circuit and intelligent bracelet that has protection against electric shock function | |
| CN209806943U (en) | High-voltage-free electronic mouse killer circuit | |
| CN204270448U (en) | A kind of simple type anti-theft warning circuit |
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: 20160120 Termination date: 20160922 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |