CN105744392A

CN105744392A - Sound-vibration double-control time-delay microphone

Info

Publication number: CN105744392A
Application number: CN201610216706.0A
Authority: CN
Inventors: 蔡华翔
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-04-06
Filing date: 2016-04-06
Publication date: 2016-07-06

Abstract

The invention relates to a sound-vibration double-control time-delay microphone, which is turned off in a time delay mode when no sound and vibration exist. Main technical problems are as follows: sound signals and vibration signals are accurately acquired; when the sound signals and vibration signals are strong, the microphone keeps turning on; when the sound signals and vibration signals are weak, the microphone is turned off in the time delay mode. Key points of the technical scheme provided by the invention are as follows: the sound signals are acquired by utilizing original circuits of the microphone; a vibration sensor is mounted at the head of the microphone and is used for acquiring the vibration signals; when the vibration sensor or a sound sensor acquires strong signals, a one-minute time-delay circuit outputs high level, a relay is switched on, and the microphone is turned on; if a user sounds at this time, decibel of a loudspeaker box is high, a second sound or vibration signal is acquired within one minute, and the relay is continuously switched on, thereby ensuring that the microphone is normally used; if no sound or vibration signal is acquired after one minute, the microphone is turned off; as long as a vibration signal is provided, such as patting the microphone, the microphone can be restarted. The sound-vibration double-control time-delay microphone is mainly applied to locations, such as classrooms, meeting rooms and the like, and is turned off in the time delay mode through the sound signals and vibration signals.

Description

Sound shakes dual control time delay microphone

Technical field:

The present invention relates to the microphone of a kind of time-delay closing, can pass through to judge sound and the vibration of environment, open microphone when having sound or vibration.

Background technology:

Along with the development of multimedia technology, microphone becomes the electroacoustic apparatus being seen everywhere, universal in the place such as school, company.But, traditional microphone only acquires sound wave, by producing voltage on acoustic wave action to electroacoustic component, then transfers electric energy to for, in various public address equipments, not having the ability being automatically switched off, usually wastes energy because user forgets closedown.It is focused primarily on the raising of the responding ability of frequency, tonequality about the existing patent of microphone, seldom has the function being automatically switched off.

Summary of the invention:

In order to really play the function of acoustical vibration two ore control, time-delay closing, it is achieved energy-conservation effect, this microphone must be accomplished claimed below:

1. can accurately catch acoustical signal and vibration signal, keep when signal intensity is enough microphone to open.

2., when microphonia friction, after time delay a period of time, close microphone.

3. the structural design of microphone answers hommization, meets the routine use custom of people.

The technical solution adopted for the present invention to solve the technical problems is:

Utilize the existing circuit of microphone (sound transducer, signal amplifier etc.) to obtain a level relevant to acoustical signal, and be amplified reducing to this signal.Meanwhile, installing an easy vibrating sensor at microphone head, available transmission-type light sensor makes, and obtains a level relevant to vibration.

Utilize TTL555 chip to build a 1min delay circuit, sound, two level signals of vibration are inputted 555 delay circuits by ' or ' circuit, cut-offfing of the output voltage control relay of delay circuit.When vibrating sensor captures vibration signal, or obtain one of sound transducer is when being better than acoustical signal microphones such as (i.e. in work) audio amplifiers of human body sounding, delay circuit obtains a high level, so that relay Guan Bi, microphone is opened, if now user sounding, the microphone such as audio amplifier sends the sound of bigger decibel.As long as second acoustical signal or vibration signal arrive within 1min, relay just can continue to close, it is ensured that the normal use of microphone；And still do not have second acoustical signal or vibration signal to arrive after 1min, then delay circuit output low level, make relay disconnect, close microphone.If needing again to enable microphone, only need to providing a vibration signal, as bounced microphone gently, this meets people and uses the custom of microphone.

The invention has the beneficial effects as follows, can when user be forgotten closedown power supply or has the long period not use microphone, microphone can be closed and save electric energy, reactivate microphone and only need to bounce microphone gently, people are when using microphone to run into fault now, also can attempt bouncing microphone, so, this design very hommization.

Accompanying drawing illustrates:

Below in conjunction with drawings and Examples, the present invention is further described.

Accompanying drawing 1 is the graph of a relation of each module of the present invention.

Accompanying drawing 2 is signal detection, time delay and cut-offs circuit.

Accompanying drawing 3 is the structural representation of vibrating sensor.

Accompanying drawing 4 is the installation position schematic diagram of vibrating sensor.

In figure,

1. acoustical signal detection and amplifying circuit

2. the sound transducer of microphone existing equipment

3. vibration signal detection and amplifying circuit

4. ' or ' door

5. TTL555 time delay 1min circuit

6. relay (breaking circuit)

7. the original basic circuit of microphone

8. transmission-type light sensor

9. spring leaf

10. dark slide

Detailed description of the invention:

Such as Fig. 1, the acoustical signal that the existing circuit of microphone receives after strengthening or weakening with vibration signal by ' or ' door input time delay circuit, delay circuit controls cut-offfing of relay.Physical circuit is shown in Fig. 2.In acoustical signal detection and amplifying circuit (1.), after the sound transducer (2.) of microphone existing equipment receives acoustical signal, being amplified by audion and obtain a voltage signal, this is the existing circuit of microphone.In order to judge the sound (decibel is different, and signal intensity is different) that the microphone such as voice or audio amplifier sends, it is necessary to this signal is done suitable enhancing or weakens.Vibration signal detection and amplifying circuit (3.) detection vibration signal, see Fig. 3, when there being vibration, spring leaf (9.) swings up and down, brake sack (10.) no longer can shading, transmission-type light sensor (8.) receives optical signal, thus exporting a high level.Acoustical signal detection and level and the vibration signal detection of amplifying circuit output and the level of amplifying circuit output input TTL555 time delay 1min circuit (5.) afterwards by ' or ' door (4.).When being high level when two signals have one, delay circuit is open-minded, simultaneously relay (6.) Guan Bi, as long as second acoustical signal or vibration signal arrive within 1min, relay just can continue to close, it is ensured that the normal use of microphone (7.).Fig. 4 is the installation position schematic diagram of vibrating sensor, and vibrating sensor is arranged on microphone head, only need to bounce microphone gently, it is possible to enable microphone.In the present invention, acoustical signal is mainly used in maintaining the normal use of microphone, and vibration signal is mainly used in reactivating of microphone.

Claims

1. sound shakes a dual control time delay microphone, is primarily characterized in that, cut-offs module including signal detection module and time delay.Wherein:

Described signal detection module, for detecting acoustical signal and the vibration signal in the external world.

Module is cut-off in described time delay, for controlling unlatching and the time-delay closing of microphone.

2. the sound according to claim one shakes dual control time delay microphone, it is characterized in that, signal detection module specifically includes:

Acoustical signal detection and amplifying circuit, for the increase and decrease of acoustical signal.

Vibration signal detection and amplifying circuit, for reception and the amplification of vibration signal.

' or ' door, for ' or ' of two signals.

3. the sound according to claim one shakes dual control time delay microphone, it is characterized in that, time delay is cut-off module and specifically included:

TTL555 time delay 1min circuit, for deciding whether open microphone or maintain the unlatching of microphone, and when no signal, time-delay closing microphone.

Relay turns off module, the breaking circuit when delay circuit output low level, closes microphone.

4. sound shakes a dual control time delay microphone, is primarily characterized in that, accepts sound and vibration signal simultaneously, and controls unlatching and the Guan Bi of microphone, as long as there being a signal, being switched on microphone, if not having second signal in 1 minute, then closing microphone.

5. sound shakes a dual control time delay microphone, is primarily characterized in that, is mounted with vibrating sensor at microphone head.