CN104796840B - A kind of sound pick up equipment and self checking method with self-checking function - Google Patents
A kind of sound pick up equipment and self checking method with self-checking function Download PDFInfo
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- CN104796840B CN104796840B CN201510153325.8A CN201510153325A CN104796840B CN 104796840 B CN104796840 B CN 104796840B CN 201510153325 A CN201510153325 A CN 201510153325A CN 104796840 B CN104796840 B CN 104796840B
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Abstract
The present invention relates to a kind of sound pick up equipment and self checking method with self-checking function, the sound pick up equipment include rear end diagnosis host and one or more sound pick-ups, be the described method comprises the following steps：Sound pick-up generates self-test signal and exports to rear end diagnosis host；Rear end diagnosis host receives the self-test signal of the sound pick-up output and calculates the distortion factor of the self-test signal；Wherein, if the distortion factor of the self-test signal is more than default threshold, output alarm signal.The present invention exports self-test signal to rear end by sound pick-up and diagnoses host, and the self-test signal that rear end diagnosis host exports sound pick-up diagnoses.When sound pick-up failure, self-test signal is distorted, one alarm signal of output prompt sound pick-up failure after rear end diagnosis Host Detection arrives, can avoid because sound pick-up failure or wiring it is bad it is equal caused by recording loss problem.
Description
Technical field
The present invention relates to sound pick-up field more particularly to a kind of sound pick up equipments and self checking method with self-checking function.
Background technology
Sound pick-up also known as monitors head, is the device for collection site sound.Existing sound pick-up is normally only by microphone
(microphone) and audio amplifier circuit are constituted.Largely the sound at scene is monitored using sound pick-up in safe protection engineering.Pickup
Device is likely to occur aging, damage or the wiring failures such as fall off and causes the loss or serious distortion of recording after usage, this is just needed
Take measures the sound pick-up for finding to damage in time.However good method there is no to solve the problems, such as this at present, sound pick-up damage
After can not be found in time.
Such as many sites of Nanjing bank have been found that the sound pick-up of damage, and it is in terms of bank and ignorant.Only
It could be found until there is dispute inspection video recording with client.If important audio is not got off by record, it is likely to result in act
Difficulty on card.The present invention is exactly in order to solve this problem.
Invention content
The purpose of the present invention aim to solve the problem that in the prior art sound pick-up there are the problem of, a kind of there is self-test work(to provide
The sound pick up equipment and self checking method of energy.
In a first aspect, the present invention provides a kind of self checking method of sound pick up equipment, the sound pick up equipment includes that rear end is examined
Disconnected host and one or more sound pick-ups, the described method comprises the following steps：
Sound pick-up generates self-test signal and exports to rear end diagnosis host；
Rear end diagnosis host receives the self-test signal of the sound pick-up output and calculates the distortion factor of the self-test signal；Its
In, if the distortion factor of the self-test signal is more than default threshold, output alarm signal.
Preferably, the self-test signal is the sine wave signal of single-frequency, the sine wave signal of the single-frequency
Generation includes：
Whether the output end for detecting audio amplifier circuit by synchronous control circuit has audio signal output；
If no audio signal exports, synchronous control circuit triggers the sine wave that sine wave generating circuit generates single-frequency
Signal.
It is further preferred that the sine wave signal for the single-frequency that the sine wave generating circuit generates amplifies by audio
It is exported again to rear end after circuit amplification and diagnoses host.
Preferably, the calculating that the rear end diagnosis host carries out the self-test signal distortion factor specifically includes：
The self-test signal of the sound pick-up output is received by microcontroller；
The signal in self-test signal frequency is filtered out by trapper, and the harmonic signal except self-test signal frequency is sent into
Microcontroller；
Harmonic signal and self-test signal are carried out ratio fortune by microcontroller according to the harmonic signal and self-test signal of reception
It calculates, and then obtains the distortion factor of self-test signal.
Preferably, the output of the alarm signal passes through one kind or more in display screen, LED light, relay and buzzer
Kind is realized.
In second aspect, the present invention provides a kind of sound pick up equipments with self-checking function.The sound pick up equipment includes rear end
Host and one or more sound pick-ups are diagnosed, the sound pick-up connects with rear end diagnosis host, for generating self-test signal output
Host is diagnosed to rear end；The rear end diagnosis host is used to receive the self-test signal of the sound pick-up output and calculates the self-test
The distortion factor of signal；Wherein, if the distortion factor of the self-test signal is more than default threshold, rear end diagnoses host and exports alarm signal
Number.
Preferably, the sound pick-up includes：
Whether synchronous control circuit, the output end for detecting audio amplifier circuit have audio signal to export and control sine
Wave generation circuit working condition；
Sine wave generating circuit, for generating self-test signal, the self-test signal is the sine wave signal of single-frequency；
Audio amplifier circuit, output to rear end diagnoses after the sine wave signal amplification for generating sine wave generating circuit
Host.
It is further preferred that the sound pick-up further includes microphone, for acquiring external environmental sounds signal, and by sound
Signal is sent into the audio amplifier circuit after being converted into electric signal.
Preferably, the rear end diagnosis host includes：
Whether synchronous control circuit, the output end for detecting sound pick-up have audio signal output, and according to testing result
The working condition of control single chip computer；
Trapper is sent for filtering out the signal in self-test signal frequency, and by the harmonic signal except self-test signal frequency
Enter microcontroller；
Microcontroller, the harmonic signal of self-test signal and trapper output for receiving sound pick-up output, by harmonic signal
Ratio operation is carried out with self-test signal, and then obtains the distortion factor of self-test signal；
Alarm module is used for output alarm signal.
It is further preferred that the alarm module include one kind in display screen, LED light, relay and/or buzzer or
It is a variety of.
The present invention exports self-test signal to rear end by sound pick-up and diagnoses host, and rear end diagnosis host exports sound pick-up
Self-test signal is diagnosed.When sound pick-up failure, self-test signal is distorted, and rear end diagnosis Host Detection exports one after arriving
Alarm signal prompts sound pick-up failure, can avoid because sound pick-up failure or wiring it is bad it is equal caused by recording loss problem.
Description of the drawings
Fig. 1 is the structure principle chart of the sound pick up equipment according to the ... of the embodiment of the present invention with self-checking function；
Fig. 2 is the method flow diagram of sound pick up equipment self-test according to the ... of the embodiment of the present invention.
Specific implementation mode
In order to make those skilled in the art be better understood from the technical solution in the embodiment of the present invention, and make of the invention real
The above objects, features, and advantages for applying example can be more obvious and easy to understand, below by drawings and examples, to the technology of the present invention
Scheme is described in further detail.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creation
Property labour under the premise of all other embodiment for being obtained, shall fall within the protection scope of the present invention.
The present invention provides a kind of sound pick up equipment with self-checking function, which includes the pickup of exportable self-test signal
Device and rear end diagnose host, and host can connect one or more sound pick-up, and be diagnosed to the self-test signal of sound pick-up output.When
Sound pick-up break down when, self-test signal distortion, Host Detection to rear output alarm signal to prompt sound pick-up failure, avoid because
The caused loss problems of recording such as sound pick-up failure or wiring are bad.
Fig. 1 is the structure principle chart of the sound pick up equipment according to the ... of the embodiment of the present invention with self-checking function.
As shown in Figure 1, the sound pick up equipment of the embodiment includes sound pick-up 1 and rear end diagnosis host 2.Sound pick-up 1 is used for producing
Raw self-test signal, which is exported to rear end, diagnoses host 2.Rear end diagnoses the self-test signal that the reception sound pick-up 1 of host 2 exports and calculates and is somebody's turn to do
The distortion factor of self-test signal.If the distortion factor of the self-test signal is more than default threshold, rear end diagnosis host 2 exports alarm signal
Number, prompt sound pick-up 1 to break down.In one example, the default threshold of sound pick-up can be 10%, if the distortion factor is more than
10%, then it can determine that sound pick-up breaks down.
It should be noted that, although Fig. 1 is by taking a sound pick-up as an example, those skilled in the art will appreciate the present invention not only limits
In this, the quantity of sound pick-up is variable, is suitable for the situation of multiple sound pick-ups.
Specifically, sound pick-up 1 includes mainly synchronous control circuit 11, sine wave generating circuit 12, audio amplifier circuit 13
With microphone 14.Microphone 14 is connected with audio amplifier circuit 13, for acquiring the external sound signal around sound pick-up 1,
And the voice signal is converted into electric signal and is sent to audio amplifier circuit 13, it is exported after the amplification of audio amplifier circuit 13.Together
The input terminal of step control circuit 11 is connected with the output end of audio amplifier circuit 13, the output end of synchronous control circuit 11 and just
The input terminal of string wave phonation circuit 12 is connected, and whether the output end for detecting audio amplifier circuit 13 has audio signal defeated
Go out, if so, then controlling the work of sine wave generating circuit 12, if nothing, is operated without control.Sine wave generating circuit 12 it is defeated
Outlet is connected with the input terminal of audio amplifier circuit 13, is mainly used to be generated according to the control instruction of synchronous control circuit 11
The sine wave signal of single-frequency, the sine wave signal are added in the input terminal of audio amplifier circuit 13 as self-test signal.
Rear end diagnosis host 2 is mainly made of synchronous control circuit 21, microcontroller 22, trapper 23 and alarm module 24.
Synchronous control circuit 21 connects with the output end of sound pick-up 1, detection sound pick-up synchronous with the synchronous control circuit 11 in sound pick-up 1
Output end whether have audio signal output, if nothing, control single chip computer 22 work, if so, then without control operate.Trap
Device 23 is the filter of band logical, and input terminal is connected with the output end of sound pick-up 1, and output end is connected with microcontroller 22,
Resultant signal for receiving the output of sound pick-up 1, and the signal in self-test signal frequency is filtered out, it will be humorous except self-test signal frequency
Wave signal is sent into microcontroller 22.Microcontroller 22 is connected with alarm module 24, for being believed according to the harmonic signal of reception and self-test
Number, harmonic signal and self-test signal are subjected to ratio operation, and then obtain the distortion factor of self-test signal, are preset if the distortion factor is more than
Threshold then passes through 24 output alarm signal of alarm module.
Specific work process is：Synchronous control circuit 11 and synchronous control circuit 21 detect audio amplifier circuit 13 simultaneously
Whether output end has audio signal output, if so, then the triggering of synchronous control circuit 11 sine wave generating circuit 12 generates single frequency
Sine wave signal, that is, self-test signal of rate.It is sent into rear end diagnosis host 2 after amplifying sine wave signal by audio amplifier circuit 13.Together
It walks control circuit 23 and triggers the operation of microcontroller 22,22 machine of monolithic receives the self-test signal that sound pick-up 1 exports, while controlling trapper
23 operations, filter out the signal in self-test signal frequency by trapper 23, the harmonic signal except self-test signal frequency are sent to
Microcontroller 22.It is assumed that the sine wave signal frequency for the single-frequency that sound pick-up 1 exports is 100Hz, then trapper 23 filters out just
It is the signal of 100Hz, will be less than or the signal higher than 100Hz is sent to microcontroller 22,22 basis of microcontroller as harmonic signal
Harmonic signal and self-test signal are carried out ratio calculation, obtain the distortion of self-test signal by the harmonic signal and self-test signal of reception
Degree.If harmonic signal is 0, the distortion factor 0, sound pick-up is intact.In one example, if the sound pick-up distortion factor is 10%,
Judge sound pick-up break down, by alarm module output alarm signal, alarm module can be display screen, LED light, relay and
One kind in buzzer or in which arbitrary combination.
Fig. 2 is the method flow diagram of sound pick up equipment self-test according to the ... of the embodiment of the present invention.
In step 201, sound pick-up generates self-test signal and exports to rear end diagnosis host.
In step 202, rear end diagnosis host receives the self-test signal of sound pick-up output and calculates the distortion factor of self-test signal；
Wherein, if the distortion factor of self-test signal is more than default threshold, output alarm signal.
Wherein, the self-test signal in step 201 is the sine wave signal of single-frequency, the generation packet of the sine wave signal
It includes：
Whether the output end for detecting audio amplifier circuit by synchronous control circuit has audio signal output；If no audio letter
Number output, then synchronous control circuit triggering sine wave generating circuit generate single-frequency sine wave signal.Further, sinusoidal
The sine wave signal for the single-frequency that wave generation circuit generates is exported after audio amplifier circuit amplifies to rear end to diagnose and be led again
Machine.
Wherein, the calculating of the rear end diagnosis host progress self-test signal distortion factor specifically includes in step 202：
The resultant signal of the sound pick-up output is received by microcontroller；
The signal in self-test signal frequency is filtered out by trapper, and the harmonic signal except self-test signal frequency is sent into
Rear end diagnoses the microcontroller in host；
Harmonic signal and self-test signal are carried out ratio fortune by microcontroller according to the harmonic signal and self-test signal of reception
It calculates, and then obtains the distortion factor of self-test signal.
Further, the output of the alarm signal in step 202 can be by display screen, LED light, relay and buzzer
One or more combinations realize.
Professional should further appreciate that, described in conjunction with the examples disclosed in the embodiments of the present disclosure
Unit and algorithm steps, can be realized with electronic hardware, computer software, or a combination of the two, hard in order to clearly demonstrate
The interchangeability of part and software generally describes each exemplary composition and step according to function in the above description.
These functions are implemented in hardware or software actually, depend on the specific application and design constraint of technical solution.
Professional technician can use different methods to achieve the described function each specific application, but this realization
It should not be considered as beyond the scope of the present invention.
The step of method described in conjunction with the examples disclosed in this document or algorithm, can use hardware, processor to execute
The combination of software module or the two is implemented.Software module can be placed in random access memory (RAM), memory, read-only memory
(ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technical field
In any other form of storage medium well known to interior.
Above-described specific implementation mode has carried out further the purpose of the present invention, technical solution and advantageous effect
It is described in detail, it should be understood that the foregoing is merely the specific implementation mode of the present invention, is not intended to limit the present invention
Protection domain, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (6)
1. a kind of method of sound pick up equipment self-test, which is characterized in that the sound pick up equipment include rear end diagnosis host and one or
Multiple sound pick-ups, the described method comprises the following steps：
Sound pick-up generates self-test signal and exports to rear end diagnosis host；The self-test signal is the sine wave signal of single-frequency,
The generation of the sine wave signal of the single-frequency includes：The output end of audio amplifier circuit is detected by synchronous control circuit is
It is no to have audio signal output；If no audio signal exports, synchronous control circuit triggers sine wave generating circuit and generates single frequency
The sine wave signal of rate；
The self-test signal of the sound pick-up output is received by microcontroller；The letter in self-test signal frequency is filtered out by trapper
Number, and the harmonic signal except self-test signal frequency is sent into microcontroller；Microcontroller is according to the harmonic signal of reception and oneself
Signal is examined, harmonic signal and self-test signal are subjected to ratio operation, and then obtain the distortion factor of self-test signal；Wherein, if it is described
The distortion factor of self-test signal is more than default threshold, then output alarm signal.
2. according to the method described in claim 1, it is characterized in that, the sine wave generating circuit generate single-frequency just
String wave signal exports after audio amplifier circuit amplifies to rear end and diagnoses host again.
3. according to the method described in claim 1, it is characterized in that, the output of the alarm signal by display screen, LED light,
One or more realizations in relay and buzzer.
4. a kind of sound pick up equipment with self-checking function, which is characterized in that the sound pick up equipment includes rear end diagnosis host and one
A or multiple sound pick-ups；The sound pick-up includes：Whether synchronous control circuit, the output end for detecting audio amplifier circuit have
Audio signal exports and control sine wave generating circuit working condition；Sine wave generating circuit, it is described for generating self-test signal
Self-test signal is the sine wave signal of single-frequency；Audio amplifier circuit, the sine wave for generating sine wave generating circuit
Output to rear end diagnoses host after signal amplification；
The rear end diagnoses host：Whether synchronous control circuit, the output end for detecting sound pick-up have audio signal defeated
Go out, and the working condition of control single chip computer according to testing result；Trapper, for filtering out the signal in self-test signal frequency, and
Harmonic signal except self-test signal frequency is sent into microcontroller；Microcontroller, for receive sound pick-up output self-test signal and
Harmonic signal and self-test signal are carried out ratio operation, and then obtain the distortion of self-test signal by the harmonic signal of trapper output
Degree；Alarm module is used for output alarm signal；
The sound pick-up connects with rear end diagnosis host, is exported to rear end diagnosis host for generating self-test signal；The rear end
Diagnosis host is used to receive the self-test signal of the sound pick-up output and calculates the distortion factor of the self-test signal；Wherein, if institute
The distortion factor for stating self-test signal is more than default threshold, then rear end diagnoses host output alarm signal.
5. sound pick up equipment according to claim 4, which is characterized in that the sound pick-up further includes microphone, for acquiring
External environmental sounds signal, and voice signal is converted into be sent into the audio amplifier circuit after electric signal.
6. sound pick up equipment according to claim 4, which is characterized in that the alarm module include display screen, LED light, after
It is one or more in electric appliance and/or buzzer.
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| CN108983684A (en) * | 2017-05-31 | 2018-12-11 | 贺州思通信息技术有限公司 | A kind of lathe safety control system based on voice recognition |
| CN107947745B (en) * | 2017-12-12 | 2018-09-25 | 江苏海湾电气科技有限公司 | Audio-frequency power amplifier with self-checking function |
| CN111596254B (en) * | 2020-06-12 | 2021-11-09 | 杭州万高科技股份有限公司 | Anomaly detection method, device, equipment and medium for energy metering chip |
| CN112423195B (en) * | 2020-11-03 | 2021-11-23 | 广东公信智能会议股份有限公司 | Self-checking device and method for audio transmission |
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