CN209517363U - A kind of wake-up circuit, monitor and infant's monitoring system - Google Patents
A kind of wake-up circuit, monitor and infant's monitoring system Download PDFInfo
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- CN209517363U CN209517363U CN201920392723.9U CN201920392723U CN209517363U CN 209517363 U CN209517363 U CN 209517363U CN 201920392723 U CN201920392723 U CN 201920392723U CN 209517363 U CN209517363 U CN 209517363U
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Abstract
The utility model relates to monitoring technology field more particularly to a kind of wake-up circuits, monitor and infant's monitoring system.Wake-up circuit, it includes capacitive microphone, microphone is connected to power supply by biasing circuit, the output end of microphone is connected with amplifying circuit, the output end of amplifying circuit is connected with power supply circuit by capacitor C3, and the power supply circuit includes switching tube, and the input terminal of switching tube connects to power supply, the control terminal of switching tube is connect with the output end of capacitor C3, and the output end of switching tube externally exports.The utility model avoids monitor from being constantly in working condition by setting wake-up circuit, saves electric energy.
Description
Technical field
The utility model relates to monitoring technology field more particularly to a kind of wake-up circuits, monitor and infant's monitoring
System.
Background technique
When looking after infant, since the sleeping time of infant is long, usually place it on shaking table, to prevent
Alarm infant, other things that caregiver can arrive next door or slightly remote place is hurried, while looking after and can go to see to the compartment time
Once or hear that crying sound is gone under processing；In order to grasp the situation of infant constantly, there are many monitoring systems on the market at present
System is obtained the image and peripheral sound of infant by monitor, then plays out viewing by receiver；Due to need by
The long-term opening of monitor, and the information that most of the time monitor obtains is invalid information；In order to save electric energy, monitoring is reduced
The working time of device certainly will need to design a kind of wake-up circuit.
Summary of the invention
The purpose of this utility model is that in view of the deficiencies of the prior art, a kind of wake-up circuit is provided, the wake-up circuit energy
Electric energy is enough saved, that reduces monitor uses the time.
The another object of the utility model is: providing a kind of monitor, which has above-mentioned wake-up circuit, can grow
Time is standby, reduces the working time, saves electric energy.
The a further object of the utility model is: providing a kind of infant's monitoring system, infant's monitoring system has upper
The monitor stated can effectively reduce the working time, save electric energy.
A kind of wake-up circuit comprising capacitive microphone, microphone are connected to power supply by biasing circuit, microphone
Output end be connected with amplifying circuit, the output end of amplifying circuit is connected with power supply circuit, the power supply circuit by capacitor C3
Including switching tube, the input terminal of switching tube is connected to power supply, and the control terminal of switching tube is connect with the output end of capacitor C3, switching tube
Output end externally export.
Further, the biasing circuit includes concatenated resistance R1, resistance R2 and resistance R3, the input terminal of resistance R1
It connects to power supply, the output end of resistance R2 is grounded by capacitor C1, and the output end of resistance R3 and the anode of microphone connect.
Further, the amplifying circuit includes preamplifying circuit, and the preamplifying circuit includes triode Q1, and three
The base stage of pole pipe Q1 is connected by the anode of concatenated capacitor C2, resistance R4 and microphone；The emitter of triode Q1 is grounded, and
The emitter of triode Q1 is connect by resistance R6 with the base stage of triode Q1, and the collector of triode Q1 passes through resistance R5 and three
The base stage of pole pipe Q1 connects, and the collector of triode Q1 is connect with the output end of resistance R1, and the collector of triode Q1 is externally defeated
Out.
Further, the amplifying circuit further includes rear class amplifying circuit, and rear class amplifying circuit includes triode Q2, prime
The output end of amplifying circuit is connect by capacitor C4 with the base stage of triode Q2, the emitter ground connection of triode Q2, triode Q2
Emitter connect with the base stage of triode Q2 by resistance R9, the collector of triode Q2 passes through resistance R8's and triode Q2
Base stage connection, the collector of triode Q2 externally export.
Further, the switching tube includes triode, metal-oxide-semiconductor or silicon-controlled.
A kind of monitor, including above-mentioned wake-up circuit further include camera, power supply, processor and the first wireless signal
Communicating circuit；Power supply respectively powers to camera, processor and the first wireless signal communication circuit by wake-up circuit, processing
Device is electrically connected with camera, microphone and the first wireless signal communication circuit respectively.
A kind of infant's monitoring system, including above-mentioned monitor, further include signal receiver, and the signal receiver includes
Second wireless singal communicating circuit receives processor, display screen and loudspeaker；Receive processor respectively with second wireless singal
Communicating circuit, display screen, loudspeaker electrical connection.
Further, first wireless communication apparatus, the second wireless communication apparatus be blue-tooth device, WIFI device or
Radio-frequency communication device.
The utility model has the beneficial effects that the utility model avoids monitor from being constantly in work by setting wake-up circuit
Make state, saves electric energy.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of wake-up circuit of the present embodiment.
Fig. 2 is the wake-up circuit another kind structural schematic diagram of the present embodiment.
Fig. 3 is infant's monitoring system operation principle schematic diagram of the present embodiment.
Specific embodiment
The utility model is described in detail below in conjunction with attached drawing.As shown in Figure 1 to Figure 3.
Embodiment: a kind of wake-up circuit comprising capacitive microphone, microphone are connected by biasing circuit and power supply
It connects, the output end of microphone is connected with amplifying circuit, and the output end of amplifying circuit is connected with power supply circuit by capacitor C3, described
Power supply circuit includes switching tube, and the input terminal of switching tube connects to power supply, and the control terminal of switching tube and the output end of capacitor C3 connect
It connects, the output end of switching tube externally exports.
Infant can generally cry after wakeing up, therefore the crying sound of infant is incuded by microphone；Work as infant
When issuing crying sound, the capacitor of microphone changes, and causes the variation of the voltage of input amplifier, and the voltage of variation is logical
After crossing amplifying circuit amplification, then it is applied to by capacitor C3 the control terminal of switching tube, switching tube formation access, power supply circuit is external
Power supply；When infant does not cry, when environment locating for infant is quieter, the capacitor of microphone has almost no change,
The voltage of the input terminal of amplifying circuit does not change, since capacitor C3 has the characteristic of the logical exchange of resistance direct current, switching tube
Control terminal potential is 0, and switching tube is in off state, and power supply circuit is in open circuit, and monitor is in standby.
Further, the biasing circuit includes concatenated resistance R1, resistance R2 and resistance R3, the input terminal of resistance R1
It connects to power supply, the output end of resistance R2 is grounded by capacitor C1, and the output end of resistance R3 and the anode of microphone connect.
Biasing circuit is used to adjust the operating voltage of MIC, and setting capacitor C1 can be filtered supply voltage, reduces back
Scape interference.
Further, the amplifying circuit includes preamplifying circuit, and the preamplifying circuit includes triode Q1, and three
The base stage of pole pipe Q1 is connected by the anode of concatenated capacitor C2, resistance R4 and microphone；The emitter of triode Q1 is grounded, and
The emitter of triode Q1 is connect by resistance R6 with the base stage of triode Q1, and the collector of triode Q1 passes through resistance R5 and three
The base stage of pole pipe Q1 connects, and the collector of triode Q1 is connect with the output end of resistance R1, and the collector of triode Q1 is externally defeated
Out.
Preamplifying circuit amplifies voltage change caused by microphone, directly can be applied to switch by capacitor C3
The control terminal of pipe.
Further, the amplifying circuit further includes rear class amplifying circuit, and rear class amplifying circuit includes triode Q2, prime
The output end of amplifying circuit is connect by capacitor C4 with the base stage of triode Q2, the emitter ground connection of triode Q2, triode Q2
Emitter connect with the base stage of triode Q2 by resistance R9, the collector of triode Q2 passes through resistance R8's and triode Q2
Base stage connection, the collector of triode Q2 externally export.
Rear class amplifying circuit again amplifies the voltage of variation, can effectively flutter the sound for grasping infant's local environment
Sound.Further, the switching tube includes triode, metal-oxide-semiconductor or silicon-controlled.
A kind of monitor, including above-mentioned wake-up circuit further include camera, power supply, processor and the first wireless signal
Communicating circuit；Power supply respectively powers to camera, processor and the first wireless signal communication circuit by wake-up circuit, processing
Device is electrically connected with camera, microphone and the first wireless signal communication circuit respectively.
Processor externally emits received image, voice signal by the first wireless signal communication circuit, to facilitate letter
Number receiver receives.
A kind of infant's monitoring system, including above-mentioned monitor, further include signal receiver, and the signal receiver includes
Second wireless singal communicating circuit receives processor, display screen and loudspeaker；Receive processor respectively with second wireless singal
Communicating circuit, display screen, loudspeaker electrical connection.
Signal receiver receives the image of the first wireless signal communication circuit transmission by second wireless singal communicating circuit
And voice signal, and it is transferred to that display screen is shown, loudspeaker plays out.
Further, first wireless communication apparatus, the second wireless communication apparatus be blue-tooth device, WIFI device or
Radio-frequency communication device.
The above content is only the preferred embodiment of the utility model, for those of ordinary skill in the art, according to this reality
With novel thought, there will be changes in the specific implementation manner and application range, and the content of the present specification should not be construed as
Limitations of the present invention.
Claims (7)
1. a kind of wake-up circuit, it is characterised in that: it includes capacitive microphone, and microphone is connected by biasing circuit and power supply
It connects, the output end of microphone is connected with amplifying circuit, and the output end of amplifying circuit is connected with power supply circuit by capacitor C3, described
Power supply circuit includes switching tube, and the input terminal of switching tube connects to power supply, and the control terminal of switching tube and the output end of capacitor C3 connect
It connects, the output end of switching tube externally exports.
2. a kind of wake-up circuit according to claim 1, it is characterised in that: the biasing circuit includes concatenated resistance
R1, resistance R2 and resistance R3, the input terminal of resistance R1 connect to power supply, and the output end of resistance R2 is grounded by capacitor C1, electricity
The anode of the output end and microphone that hinder R3 connects.
3. a kind of wake-up circuit according to claim 2, it is characterised in that: the amplifying circuit includes prime amplification electricity
Road, the preamplifying circuit include triode Q1, and the base stage of triode Q1 passes through concatenated capacitor C2, resistance R4 and microphone
Anode connection；The emitter of triode Q1 is grounded, and the emitter of triode Q1 passes through the base stage of resistance R6 and triode Q1
The collector of connection, triode Q1 is connect by resistance R5 with the base stage of triode Q1, the collector and resistance R1 of triode Q1
Output end connection, the collector of triode Q1 externally exports.
4. a kind of wake-up circuit according to claim 3, it is characterised in that: the amplifying circuit further includes rear class amplification electricity
Road, rear class amplifying circuit include triode Q2, and the output end of preamplifying circuit is connected by the base stage of capacitor C4 and triode Q2
It connects, the emitter ground connection of triode Q2, the emitter of triode Q2 is connect by resistance R9 with the base stage of triode Q2, triode
The collector of Q2 is connect by resistance R8 with the base stage of triode Q2, and the collector of triode Q2 externally exports.
5. a kind of wake-up circuit according to claim 1, it is characterised in that: the switching tube include triode, metal-oxide-semiconductor or
It is silicon-controlled.
6. a kind of monitor, it is characterised in that: further include camera shooting including a kind of any wake-up circuit of claim 1 to 5
Head, power supply, processor and the first wireless signal communication circuit；Power supply by wake-up circuit respectively to camera, processor with
And first wireless signal communication circuit power supply, processor respectively with camera, microphone and the first wireless signal communication circuit
Electrical connection.
7. a kind of infant's monitoring system, it is characterised in that: further include that signal receives including monitor as claimed in claim 6
Device, the signal receiver include second wireless singal communicating circuit, receive processor, display screen and loudspeaker；Receiving area
Reason device is electrically connected with second wireless singal communicating circuit, display screen, loudspeaker respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920392723.9U CN209517363U (en) | 2019-03-26 | 2019-03-26 | A kind of wake-up circuit, monitor and infant's monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920392723.9U CN209517363U (en) | 2019-03-26 | 2019-03-26 | A kind of wake-up circuit, monitor and infant's monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209517363U true CN209517363U (en) | 2019-10-18 |
Family
ID=68187849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920392723.9U Active CN209517363U (en) | 2019-03-26 | 2019-03-26 | A kind of wake-up circuit, monitor and infant's monitoring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209517363U (en) |
-
2019
- 2019-03-26 CN CN201920392723.9U patent/CN209517363U/en active Active
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