CN204216871U - A kind of sound and vibration sensing switch circuit - Google Patents
A kind of sound and vibration sensing switch circuit Download PDFInfo
- Publication number
- CN204216871U CN204216871U CN201420519993.9U CN201420519993U CN204216871U CN 204216871 U CN204216871 U CN 204216871U CN 201420519993 U CN201420519993 U CN 201420519993U CN 204216871 U CN204216871 U CN 204216871U
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Abstract
The utility model discloses a kind of sound and vibration sensing switch circuit, be mainly used on running recording instrument of automobile or other warning device, comprise voltage input, voltage stabilizing circuit, amplifying circuit, under-voltage detection protective circuit, voltage sample circuit, MCU and A/D translation interface composition control circuit and Intelligent Measurement control circuit, it is characterized in that described under-voltage detection protective circuit is made up of voltage sample circuit and control circuit, accurately can measure cell voltage; Described Intelligent Measurement control circuit is made up of amplifier, MCU, stabilized voltage power supply, output circuit; Described amplifying circuit comprises vibration signal amplifying circuit and amplifier circuit for sound frequency signal; Described amplifying circuit is provided with rectifier diode and filter capacitor, for MCU provides rectifying and wave-filtering signal after receiving vibration signal and voice signal; Be provided with isolating diode between described amplifier circuit for sound frequency signal and vibration signal amplifying circuit, effectively can transmit the signal from different directions, and interference-free mutually.
Description
Technical field
The utility model relates to video monitoring and warning device switching circuit technical field, particularly relates to the induction of a kind of sound and vibration sensing switch circuit.
Background technology
Existing driving recording warning device majority adopts independent sound inductive switch circuit start to report to the police or independent use vibration sensing switch circuit start is reported to the police, or uses Vibration induction to add sound sensor circuit.Which kind of mode all has following defect, first, single type sensor circuit, mode of operation is single, and reliability is poor; Compound sensor circuit, owing to using the elements such as ceramic piezo and snap switch, although induction comprehensively, complex manufacturing, production efficiency is low, and cost is high, is also not suitable for producing in enormous quantities.In addition, traditional under-voltage protecting circuit be comparator, like this, need the peripheral cell of more complicated, produce product sequence complicated, cost is high.The sound induction alarm of existing product, Vibration induction report to the police and the production efficiency of circuit arrangement of under-voltage protection merit lower, modern production demand can not be adapted to completely, greatly limit the application space of traveling alarm field of video monitoring.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art; the utility model provides and a kind ofly substitutes ceramic piezo by ball vibration sensing switch as the core parts of Vibration induction; also under-voltage protecting circuit is improved simultaneously; be transformed into by traditional comparator monitoring voltage and carry out monitoring cell voltage with the A/D translation interface of MCU; this way; economize on resources, reduce costs, greatly increase production efficiency simultaneously, be suitable for sound and the vibration sensing switch circuit of batch production.
The technical scheme that the utility model adopts is: a kind of sound and vibration sensing switch circuit, comprise voltage input, voltage stabilizing circuit, amplifying circuit, under-voltage detection protective circuit, voltage sample circuit, MCU and A/D translation interface composition control circuit and Intelligent Measurement control circuit, it is characterized in that: described under-voltage detection protective circuit is made up of voltage sample circuit and control circuit, accurately can measure cell voltage, ensure that supplying cell normally works; Described Intelligent Measurement control circuit is made up of amplifier, MCU, stabilized voltage power supply, output circuit; Described amplifying circuit comprises vibration signal amplifying circuit and amplifier circuit for sound frequency signal; Described amplifying circuit is provided with rectifier diode and filter capacitor, for MCU provides rectifying and wave-filtering signal after receiving vibration signal and voice signal; Be provided with isolation resistance between described amplifier circuit for sound frequency signal and vibration signal amplifying circuit, effectively can transmit the signal from different directions.
Described voltage input: input voltage divides two-way, a road is for discharge circuit work, and another road is for MCU circuit working.
Described voltage stabilizing circuit: be provided with lowering and stabilizing blood pressure diode, triode in circuit; voltage stabilizing IC and filter; the voltage that input is come in exports as stable operating voltage after this diode, triode voltage stabilizing process and capacitor filtering; stable voltage is powered to MCU control circuit and discharge circuit, simultaneously for under-voltage detection protective circuit provides stable reference voltage.
Described vibration signal amplifying circuit: ball-type sensitive switch, RC network and amplifier A form.When receiving vibration signal, vibration switch will produce shake, and break-make situation appears in switch, after coupling capacitance receives this signal, signal is sent to amplifier A and carries out amplification process; Described amplifier circuit for sound frequency signal: be made up of miaow head, RC network and amplifier B.When receiving voice signal, signal is sent to amplifier B by receiving the signal come by after the amplitude of RC network adjustment induced voltage by miaow head, and signal is carried out amplification process by amplifier B.
Described sound induced signal and Vibration induction signal carry out convergeing to a bit after reception is amplified to signal through amplifying circuit, before point, acoustic reception amplifying circuit and vibrations receive amplifying circuit and are provided with a diode respectively and isolate, and the effect of this diode effectively shields interfering with each other between two kinds of circuit signals and impact.
Described sample circuit: detect voltage in under-voltage protecting circuit whether between set scope.
Described under-voltage detection protective circuit: be made up of the A/D input interface of voltage sampling network and MCU, when cell voltage meets condition of work, MCU controls whole circuit and runs well; When cell voltage is lower than rated value, MCU automatic cut-off power, closes output circuit, enters battery saving mode.
Described Intelligent Measurement control circuit: comprise amplifier, MCU, stabilized voltage power supply, output circuit, through diode rectification filtering after induced signal is amplified by amplifier, forms stable level signal, enter MCU intelligent chip, analyze through MCU, judge, finally export control command.
Described output circuit: after MUC receives effective induced signal, export electronic switch and be opened, the equipment such as electric power system, video camera of video circuit is activated, and report to the police, or video monitoring is started working.
Good effect of the present utility model is: be provided with isolating diode current rectifying and wave filtering circuit by vibration signal amplifying circuit and amplifier circuit for sound frequency signal outlet chamber, signal through amplifying process converts a metastable direct current signal at this, MCU is facilitated to read, be conducive to the interference eliminating moment simultaneously, achieve driving recording warning device satisfied not only by sound induction but also by Vibration induction warning demand; When the A/D of MCU change input port detect that cell voltage is too low time, circuit automatically shuts down, and enters resting state, reduces the power consumption of battery, be conducive to like this automobile in secondary startup; The vibrations components and parts of this programme adopt ball vibrations to replace ceramic piezo, and under-voltage protection is without the need to comparator, and the production technology for product is more simple and cost-saving, improves productivity ratio.
accompanying drawing illustrates:
Fig. 1 is the utility model integrated circuit frame diagram.
Fig. 2 is the utility model sound and Vibration induction control circuit frame diagram.
Fig. 3 is that the utility model Vibration induction receives amplifying circuit block diagram.
Fig. 4 is that the induction of the utility model sound receives amplifying circuit block diagram.
embodiment:
Below in conjunction with the drawings and specific embodiments, the utility model is further described.
Please refer to Fig. 1, Fig. 2, a kind of sound and vibration sensing switch circuit, comprise the circuit such as voltage input, voltage stabilizing circuit, reception amplifying circuit, under-voltage sample circuit, intelligent control circuit and output switch, wherein receive amplifying circuit and comprise sound induction reception amplifying circuit and Vibration induction reception amplifying circuit.
Voltage inputs: input voltage range is that DC11.6V-13V(also can adjust voltage range according to the actual requirements), voltage divides two-way, the first via flows through voltage stabilizing circuit and (is provided with a lowering and stabilizing blood pressure triode in voltage stabilizing circuit, a voltage stabilizing IC and multiple filter, the operating voltage that the voltage that input is come in exports as 5V is stable after this triode voltage stabilizing process and filtering is powered for main circuit, especially be Intelligent Measurement control circuit, output circuit and amplifying circuit are powered), second road is to undervoltage detection circuit comparative voltage, during electric voltage exception, MCU turns off sensor circuit, play the object of protection battery and delay battery life.
After described vibration signal amplifying circuit receives vibration signal, amplification process is carried out to signal; After described acoustic reception amplifying circuit receives voice signal, amplification process is carried out to signal; After described Vibration induction reception amplifying circuit and described sound induction reception amplifying circuit carry out amplification process to signal, meet at a bit, after point, acoustic reception amplifying circuit and vibrations receive amplifying circuit and are respectively arranged with a diode and isolate, and diode effectively can shield interfering with each other between two kinds of circuit signals and impact.
Described under-voltage detection protective circuit: when sample circuit detects input voltage lower than the 11.6V specified; the A/D converter of MCU; under-voltage signal detected; the instruction of MCU starting protection; sensor circuit enters Sleep protection state; inductor not work, until cell voltage returns to normal condition.
Described intelligent control circuit: comprise amplifier, MCU, stabilized voltage power supply, output circuit etc.Through diode rectification filtering after induced signal is amplified by amplifier, form stable level signal, enter MCU intelligent chip, analyze through MCU, judge, finally export control command.
With reference to Fig. 3, Fig. 4, vibration signal amplifying circuit is made up of ball type vibration switch (also claiming ball-type sensitive switch) RC network and amplifier A.When vibration switch receives vibration signal, vibrations spring can produce shake, at this moment will form faint voltage signal on piezoelectricity ball, this voltage signal is by being sent to amplifier A by signal after the amplitude of RC network adjustment induced voltage, and signal is carried out amplification process by amplifier A; Amplifier circuit for sound frequency signal: be made up of miaow head, RC network and amplifier B.When miaow head receives voice signal input, at this moment will form faint voltage signal, this voltage signal is by being sent to amplifier B by signal after the amplitude of RC network adjustment induced voltage, and signal is carried out amplification process by amplifier B.
Preferred described vibration signal amplifying circuit and amplifier circuit for sound frequency signal operating voltage are 5V.
Such scheme is only the one in the utility model preferred version, and described input voltage can be set in any range between 12V to 48V as required.
Claims (3)
1. sound and a vibration sensing switch circuit, comprise voltage input, voltage stabilizing circuit, amplifying circuit, under-voltage detection protective circuit, voltage sample circuit, MCU and A/D translation interface composition control circuit and Intelligent Measurement control circuit, it is characterized in that:
Described under-voltage detection protective circuit is made up of voltage sample circuit and control circuit, accurately can measure cell voltage, cuts off the electricity supply when ensureing supplying cell low voltage, thus protection battery can not be too fast and impaired because of electric discharge;
Described Intelligent Measurement control circuit is made up of amplifier, MCU, stabilized voltage power supply, output circuit;
Described amplifying circuit comprises vibration signal amplifying circuit and amplifier circuit for sound frequency signal;
Described amplifying circuit is provided with rectifier diode and filter capacitor, for MCU provides rectifying and wave-filtering signal after receiving vibration signal and voice signal;
Be provided with isolation resistance between described amplifier circuit for sound frequency signal and vibration signal amplifying circuit, effectively can transmit the signal from different directions, simultaneously mutually interference-free.
2. a kind of sound according to claim 1 and vibration sensing switch circuit, is characterized in that: described vibration signal amplifying circuit is made up of ball-type vibration sensing switch and RC network and amplifier A.
3. a kind of sound according to claim 1 and vibration sensing switch circuit, is characterized in that: described amplifier circuit for sound frequency signal is by high sensitivity miaow head, and RC network and amplifier B form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420519993.9U CN204216871U (en) | 2014-09-11 | 2014-09-11 | A kind of sound and vibration sensing switch circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420519993.9U CN204216871U (en) | 2014-09-11 | 2014-09-11 | A kind of sound and vibration sensing switch circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204216871U true CN204216871U (en) | 2015-03-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420519993.9U Expired - Fee Related CN204216871U (en) | 2014-09-11 | 2014-09-11 | A kind of sound and vibration sensing switch circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204216871U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105376529A (en) * | 2015-10-23 | 2016-03-02 | 卢军 | Intelligent vehicular radar monitoring and triggering apparatus and system |
-
2014
- 2014-09-11 CN CN201420519993.9U patent/CN204216871U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105376529A (en) * | 2015-10-23 | 2016-03-02 | 卢军 | Intelligent vehicular radar monitoring and triggering apparatus and system |
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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: 20150318 Termination date: 20150911 |
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| EXPY | Termination of patent right or utility model |