CN207798251U - Intelligent noise monitoring alarm device - Google Patents
Intelligent noise monitoring alarm device Download PDFInfo
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- CN207798251U CN207798251U CN201820169284.0U CN201820169284U CN207798251U CN 207798251 U CN207798251 U CN 207798251U CN 201820169284 U CN201820169284 U CN 201820169284U CN 207798251 U CN207798251 U CN 207798251U
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Abstract
The utility model discloses a kind of intelligent noise monitoring alarm device, including sound pick-up, noise analyzer, power module and alarm module, the alarm module includes prefix switch circuit, filter circuit, control circuit and multiple alarm lamp；The filter circuit includes the different filter unit of several frequency filterings, the control circuit includes quantity electric-controlled switch identical with filter unit quantity, and any of which road alarm lamp of multiple alarm lamp is serially connected with the switch terminals of electric-controlled switch, power module to connect；The utility model structure and principle are simple, while the intensity and frequency of measurement noise, can be embodied to the intensity of current noise by the light levels of the luminescence unit of alarm lamp, compared with the prior art the type of alarm is more convenient and intuitive.
Description
Technical field
The utility model is related to noise testings and alarm field, and in particular to a kind of intelligent noise monitoring alarm device.
Background technology
Noise monitoring is the technology of comparative maturity, generally sound is picked up by microphone, since one right built in microphone
The condenser type Electret condenser microphone of sound sensitive, sound wave make the electret film in microphone vibrate, and lead to the variation of capacitance, and generate
Be corresponding to it the small voltage of variation, (is usually single by mating analyzer to realize conversion of the voice signal to electric signal
Piece machine) acquisition after can be obtained noise figure.
Noise monitoring measurement noise intensity, that is, decibel value does not acquire the frequency of sound, and both of which is sound
Characteristic only could really distinguish noise according to intensity and frequency.The exceeded alarm technique of noise is at present using soft-sphere model side
Formula and microcontroller judge whether current noise figure is more than the alarm limits set, if it exceeds this result just starts alarm dress
It sets, and warning device generally uses fairly simple audible-visual annunciator etc., existing type of alarm that cannot embody exceeded specific
Noise frequency range is also just difficult to targetedly be handled, and the noise intensity standard of different frequency is also differed, in life
Direct reference frame cannot be all provided in terms of production test, Noise management.
Utility model content
Against the above deficiency, the utility model provides a kind of intelligent noise monitoring report distinguished with the exceeded frequency range of noise
Alarm device.
To solve the above-mentioned problems, the utility model uses following technical scheme：A kind of intelligent noise monitoring alarm device, packet
Sound pick-up, noise analyzer, power module and alarm module are included, the alarm module includes prefix switch circuit, filter electricity
Road, control circuit and multiple alarm lamp；The control terminal or triggering end of prefix switch circuit are connected with the output end of noise analyzer,
The output end of sound pick-up is connected by the switch working end of prefix switch circuit with the input terminal of filter circuit, prefix switch circuit
Output end connection filter circuit input terminal, the filter circuit includes the different filter unit of several frequency filterings,
The control circuit includes quantity electric-controlled switch identical with filter unit quantity, the output end of each filter unit respectively with it is automatically controlled
Triggering end or the control terminal one-to-one correspondence of switch, any of which road alarm lamp of multiple alarm lamp and the switch terminals of electric-controlled switch,
Power module, which is serially connected, to connect；Power module provides the required of sound pick-up, prefix switch circuit, filter circuit and control circuit
Electricity consumption；The sound pick-up and/or prefix switch circuit include linear amplification unit.
The filter unit includes operational amplifier 0p1, capacitance C1, capacitance C2, resistance R1, resistance R2, resistance R3, described
The inverting input of operational amplifier Op1 is connected serially to the output end of prefix switch circuit by capacitance C1 and resistance R1, with mutually defeated
Enter sequential series resistance R2 and capacitance C2 between end and operational amplifier output terminal, and in-phase input end also with circuit reference ground terminal
It is connected, resistance R3 is connected between inverting input and the output end of operational amplifier.
The electric-controlled switch includes triode and biasing resistor, and the base stage of triode is connected serially to filter by biasing resistor
The output end of circuit, the collector of triode are connect with any of which road alarm lamp of multiple alarm lamp, the emitter of triode
Ground connection.
The utility model obtains ambient sound by sound pick-up and converts voice signal to electric signal, when noise analysis instrument
It obtains and when the noise analyzed is exceeded, noise analysis instrument output signal triggers prefix switch circuit turn-on, and multiple filtering frequency ranges are not
After same filter unit receives voice signal, by audio-signal resolution for the noise signal of several frequency ranges, exceeded noise frequency
The signal of the corresponding filter unit output of section will trigger electric-controlled switch conducting, make alarm lamp electrified light emitting；When exceeded noise is strong
Degree is higher, then the triggering intensity of electric-controlled switch is higher, and the degree of saturation for the triode being connect with alarm lamp is higher, and tube voltage drop is got over
Low, alarm lamp is brighter.
Compared with prior art, the structure and principle of the utility model are simple, pass through the filter unit of several different frequency ranges, control
Circuit processed, alarm lamp are realized to being measured while current exceeded noise intensity and noise frequency range, and have carried out intuitive embodiment,
It is very clear for exceeded specific noise source frequency range；So as to directly or by other combinations such as photoelectric sensing module
Accurate match is to noise source and carries out feedback control.
Description of the drawings
Fig. 1 is the electrical block diagram of the utility model.
Fig. 2 is the structural schematic diagram of the filter unit of filter circuit.
The structural schematic diagram of Fig. 3 electric-controlled switch of circuit in order to control.
Specific implementation mode
It is right with reference to the accompanying drawings and examples in order to make those skilled in the art that the utility model may be better understood
Technical solutions of the utility model further illustrate.
As shown in Figure 1 to Figure 3, a kind of intelligent noise monitors alarm device, including sound pick-up, noise analyzer, power module
And alarm module, the alarm module include prefix switch circuit, filter circuit, control circuit and multiple alarm lamp；It is preposition
Switching circuit includes electric-controlled switch module；The control terminal or triggering end of prefix switch circuit and the output end phase of noise analyzer
Even, the output end of sound pick-up is connected by the switch working end of prefix switch circuit with the input terminal of filter circuit, prefix switch
The input terminal of the output end connection filter circuit of circuit, the filter circuit include the different filtering list of several frequency filterings
Member, the control circuit include quantity electric-controlled switch identical with filter unit quantity, the output end of each filter unit respectively with
The triggering end or control terminal of electric-controlled switch correspond, any of which road alarm lamp of multiple alarm lamp and the switch of electric-controlled switch
End, power module are serially connected and connect；Power module provides sound pick-up, prefix switch circuit, filter circuit and control circuit
Required electricity consumption；The sound pick-up and/or prefix switch circuit include linear amplification unit, the noise voltage obtained with amplification；
The electric-controlled switch module of the prefix switch circuit is metal-oxide-semiconductor with the electric-controlled switch in control circuit.
The filter unit includes operational amplifier 0p1, capacitance C1, capacitance C2, resistance R1, resistance R2, resistance R3, described
The inverting input of operational amplifier Op1 is connected serially to the output end of prefix switch circuit by capacitance C1 and resistance R1, with mutually defeated
Enter sequential series resistance R2 and capacitance C2 between end and operational amplifier output terminal, and in-phase input end also with circuit reference ground terminal
It is connected, resistance R3 is connected between inverting input and the output end of operational amplifier.Pass through different parameter selections so that filter
The frequency filtering section of wave unit is different.
The electric-controlled switch includes triode and biasing resistor, and the base stage of triode is connected serially to filter by biasing resistor
The output end of circuit, the collector of triode are connect with any of which road alarm lamp of multiple alarm lamp, the emitter of triode
Ground connection.The emitter of triode Q1 is the switch terminals for being equivalent to electric-controlled switch with collector.
The control circuit of this programme uses three road electric-controlled switch, multiple alarm lamp to use three-color light-emitting body, three tunnels automatically controlled
The switch terminals of switch are a pair of with the emitting red light unit of three-color light-emitting body, green emitting unit, blue-light-emitting unit one respectively
It should be connected in series in the feeder ear of power module；When work, environmental noise is converted to electric signal by sound pick-up, by noise analysis
Whether the noise parameters that instrument analysis obtains are whether noise range i.e. noise intensity is exceeded, when noise intensity is exceeded, noise point
Analyzer output signal triggers prefix switch closing of circuit so that the electric signal of sound pick-up output is by prefix switch circuit input filter
Device circuit, and the filter unit in filtered device circuit is decomposed into the different electric signal of multiple frequency ranges, when wherein some frequency range
Noise it is exceeded when, the electric signal of the filter unit output of corresponding frequency band is connected connected electric-controlled switch is triggered, and makes
The luminescence unit of the different colours of corresponding frequency band is lighted to obtain alarm signal.
Above-described embodiment is merely exemplary to illustrate the principle and effect of the utility model, new not for this practicality is limited
Type.Any person skilled in the art can all carry out above-described embodiment under the spirit and scope without prejudice to the utility model
Modifications and changes.Therefore, all those of ordinary skill in the art are without departing from the revealed spirit of the utility model
With all equivalent modifications completed under technological thought or change, should be covered by the claim of the utility model.
Claims (3)
1. a kind of intelligent noise monitoring alarm device, including sound pick-up, noise analyzer, power module and alarm module, special
Sign is：The alarm module includes prefix switch circuit, filter circuit, control circuit and multiple alarm lamp；Prefix switch
The control terminal or triggering end of circuit are connected with the output end of noise analyzer, and the output end of sound pick-up passes through prefix switch circuit
Switch working end is connected with the input terminal of filter circuit, the input terminal of the output end connection filter circuit of prefix switch circuit,
The filter circuit includes the different filter unit of several frequency filterings, and the control circuit includes quantity and filter unit number
Identical electric-controlled switch is measured, the output end of each filter unit is corresponded with the triggering end of electric-controlled switch or control terminal respectively, more
Any of which road alarm lamp of road alarm lamp is serially connected with the switch terminals of electric-controlled switch, power module to connect；Power module carries
For the required electricity consumption of sound pick-up, prefix switch circuit, filter circuit and control circuit；The sound pick-up and/or prefix switch electricity
Road includes linear amplification unit.
2. intelligent noise monitoring alarm device as described in claim 1, it is characterised in that：The filter unit includes that operation is put
Big device Op1, capacitance C1, capacitance C2, resistance R1, resistance R2, resistance R3, the inverting input of the operational amplifier Op1 pass through
Capacitance C1 and resistance R1 is connected serially to the output end of prefix switch circuit, sequence between in-phase input end and operational amplifier output terminal
Series resistance R2 and capacitance C2, and in-phase input end is also connected with circuit reference ground terminal, inverting input and operational amplifier
Resistance R3 is connected between output end.
3. intelligent noise monitoring alarm device as described in claim 1, it is characterised in that：The electric-controlled switch includes triode
And biasing resistor, the base stage of triode are connected serially to the output end of filter circuit by biasing resistor, the collector of triode with
Any of which road alarm lamp connection of multiple alarm lamp, the emitter ground connection of triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820169284.0U CN207798251U (en) | 2018-01-31 | 2018-01-31 | Intelligent noise monitoring alarm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820169284.0U CN207798251U (en) | 2018-01-31 | 2018-01-31 | Intelligent noise monitoring alarm device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207798251U true CN207798251U (en) | 2018-08-31 |
Family
ID=63267616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820169284.0U Active CN207798251U (en) | 2018-01-31 | 2018-01-31 | Intelligent noise monitoring alarm device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207798251U (en) |
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2018
- 2018-01-31 CN CN201820169284.0U patent/CN207798251U/en active Active
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