CN105092991A - Wireless noise sensor - Google Patents
Wireless noise sensor Download PDFInfo
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- CN105092991A CN105092991A CN201410193251.6A CN201410193251A CN105092991A CN 105092991 A CN105092991 A CN 105092991A CN 201410193251 A CN201410193251 A CN 201410193251A CN 105092991 A CN105092991 A CN 105092991A
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- 238000001914 filtration Methods 0.000 claims abstract description 31
- 230000002093 peripheral effect Effects 0.000 claims abstract description 9
- 239000013078 crystal Substances 0.000 claims description 7
- 230000005059 dormancy Effects 0.000 claims description 7
- 230000002618 waking effect Effects 0.000 claims description 4
- 238000005259 measurement Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 11
- 238000012544 monitoring process Methods 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 4
- 239000000428 dust Substances 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 206010061245 Internal injury Diseases 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000004304 visual acuity Effects 0.000 description 1
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Abstract
The invention discloses a wireless noise sensor. The sensor includes a sound sensor, a signal retaining and filtering circuit, a control circuit, a wireless data transceiver and a power source. A differential AD circuit is integrated in the control circuit. The sound sensor is connected with the control circuit through the signal retaining and filtering circuit. The wireless data transceiver is connected with the control circuit. The power source is connected with the sound sensor, the signal retaining and filtering circuit, the control circuit and the wireless data transceiver. The wireless noise sensor only samples noise of working frequency or around frequency, so that a fact that the obtained data contains no noise waves and peripheral noise is ensured. Therefore, the measurement result becomes more accurate and the power consumption is extremely low.
Description
Technical field
The present invention relates to operation power noise of equipment field of measuring technique, particularly, relate to a kind of radio noise sensor.
Background technology
Along with the development of intelligent grid, the status monitoring of power equipment is become more and more important.Power equipment long-term work is when high-voltage large current, and inner a little damage just likely causes serious electric power accident, brings hidden danger to the safe operation of whole electrical network.And the internal injury of power equipment can not check out by the exploration of common maintenance means.
But run by audiomonitor the noise produced and effectively can monitor out power equipment and whether there is internal injury.The noise that good equipment produces when normal operation is very little, when device interior breaks down, due to the impact of its working environment, can produce the noise of high strength in narrow space.Therefore, the noise produced when running power equipment is monitored, and becomes important means and the mode of power equipment state monitoring.
At present the equipment such as SONOAN or noise-measuring instrument is generally adopted to the walkaway of power equipment, these equipment performance reliable measurements noise informations, but its monitoring is full wave noise information; Though monitoring range is large wide but but there is detection wave band, measures inaccurate problem, and be easily subject to the impact of external noise.In addition, usual this kind of equipment power dissipation is large, needs to use external power source, periodic replacement battery or charging, also needs to lay communication cable.This kind equipment limits by device structure, is not generally suitable in the environment such as high humidity, dust and uses.
Summary of the invention
The present invention be in order to overcome walkaway wave band in prior art wide, measure inaccurate defect, according to an aspect of the present invention, a kind of radio noise sensor is proposed.
According to a kind of radio noise sensor that the embodiment of the present invention proposes, comprising: sonic transducer, signal keep and filtering circuit, control circuit, wireless receiver and power supply; The inner integrated difference AD circuit of control circuit; Sonic transducer keeps being connected with control circuit with filtering circuit by signal, and wireless receiver is connected with control circuit, and power supply keeps being connected with filtering circuit, control circuit, wireless receiver with sonic transducer, signal respectively.
In technique scheme, control circuit adopts the discontinuous operation pattern of little dutycycle.
In technique scheme, when control circuit adopts the discontinuous operation pattern of little dutycycle, dutycycle is:
Wherein, D is dutycycle, T
1for waking the working time up, T
2for dormancy time.
In technique scheme, this radio noise sensor also comprises: upper cover and drain pan, and upper cover and drain pan are by screw or be welded and fixed connection;
Sonic transducer, signal keep with filtering circuit, control circuit, wireless receiver and power package in the space that upper cover and drain pan form.
In technique scheme, wireless receiver comprises radio-frequency receiving-transmitting integrated circuit, antenna and crystal resonator.
In technique scheme, sonic transducer is the high-precision sonic transducer of electret-type.
In technique scheme, signal keeps being connected with control circuit by AD interface with filtering circuit; Wireless receiver is connected with control circuit by SPI interface.
In technique scheme, control circuit comprises main control chip and peripheral circuit; Main control chip is MSP430 series monolithic chip.
In technique scheme, radio-frequency receiving-transmitting integrated circuit is NRF2401P chip.
A kind of radio noise sensor that the embodiment of the present invention provides, keeps only sampling power frequency and neighbouring frequency noise with filtering circuit by signal, guarantees to measure the data obtained not containing clutter and peripheral noise; Signal keeps measuring noise within the scope of power frequency with filtering circuit for the application-specific of electric power environmental, and measurement result is more accurate, and this radio noise sensor is specially adapted to detect power equipment.Control circuit adopts the discontinuous operation pattern of little dutycycle, radio noise biosensor power consumption is extremely low, also also can regularly send the data measuring gained by Long-Time Service when only using disposable battery, thus it is online for a long time and non-maintaining to realize radio noise sensor.Meanwhile, this radio noise sensor external is without interface and space, and water proof and dust proof is functional, can improve the IP grade of radio noise sensor; Can long continuous operation under powered battery condition, realize high reliability on-line monitoring noise.
Other features and advantages of the present invention will be set forth in the following description, and, partly become apparent from instructions, or understand by implementing the present invention.Object of the present invention and other advantages realize by structure specifically noted in write instructions, claims and accompanying drawing and obtain.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for instructions, together with embodiments of the present invention for explaining the present invention, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the structural drawing of radio noise sensor in the embodiment of the present invention;
Fig. 2 is the detailed structure view of radio noise sensor in the embodiment of the present invention;
Fig. 3 is dutycycle schematic diagram in the embodiment of the present invention;
Fig. 4 is the mounting structure figure of radio noise sensor in the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail, but is to be understood that protection scope of the present invention not by the restriction of embodiment.
According to the embodiment of the present invention, provide a kind of radio noise sensor, Fig. 1 is the structural drawing of radio noise sensor.This radio noise sensor comprises: sonic transducer 10, signal keep and filtering circuit 20, control circuit 30, wireless receiver 40 and power supply 50.Wherein, sonic transducer 10 keeps being connected with control circuit 30 with filtering circuit 20 by signal, wireless receiver 40 is connected with control circuit 30, and power supply 50 keeps with sonic transducer 10, signal being connected with filtering circuit 20, control circuit 30, wireless receiver 40 respectively.
In the embodiment of the present invention, sonic transducer 10 adopts the electret-type high precision sonic transducer with high-conversion rate, the feature that electret-type sonic transducer has wide frequency range, frequency response is straight, dynamic range is large, degree of distortion is little, highly sensitive, electromagnetic interference (EMI) is little and price is low, volume is little.
Signal keeps using high-precision bandwidth-limited circuit, for filtering out new number of clutter beyond power frequency with filtering circuit 20.Keep only sampling power frequency and neighbouring frequency noise with filtering circuit 20 by signal, guarantee to measure the data obtained not containing clutter and peripheral noise; Signal keeps measuring noise within the scope of power frequency with filtering circuit 20 for the application-specific of electric power environmental, and measurement result is more accurate.Meanwhile, signal keeps keeping function can also keep the noise signal collected with the signal of filtering circuit 20.
The inner integrated high resolving power difference AD circuit of control circuit 30.In the embodiment of the present invention, control circuit 30 specifically comprises main control chip and peripheral circuit, and this main control chip adopts the MSP430 series monolithic with 16 high-precision difference AD circuit.MSP430 series monolithic is a kind of 16 super low-power consumptions, has the mixed-signal processor of reduced instruction set computer.Each series of MSP430 series monolithic is all integrated with more rich interior peripheral hardware, is such as integrated with 16 above-mentioned high-precision difference AD circuit.MSP430 series monolithic has more I/O interface, such as AD interface, SPI (SerialPeripheralInterface, Serial Peripheral Interface (SPI)) interface etc.
Meanwhile, MSP430 series monolithic adopts ultralow Consumption, and what supply voltage adopted is 1.8-3.6V voltage.When it thus can be made to run under the Clock of 1MHz, the minimum meeting of electric current of chip is at 165 μ about A, and the lowest power consumption under RAM Holdover mode only has 0.1 μ A.In addition, adopt unique Clock System Design, produce the clock needed for CPU and each function by system clock system, and these clocks under the control of instruction, can open and close, thus realize the control to overall power consumption.
Wireless receiver 40 comprises radio-frequency receiving-transmitting integrated circuit 41, antenna 42 and crystal resonator 43, specifically shown in Figure 2.The bidirectional interface of radio-frequency receiving-transmitting integrated circuit 41 is connected with control circuit 30, realizes data double-way transmission; Antenna 42 is connected with radio-frequency receiving-transmitting integrated circuit 41 by feeder line; Crystal resonator 43 provides crystal oscillator clock for radio-frequency receiving-transmitting integrated circuit 41.In the embodiment of the present invention, radio-frequency receiving-transmitting integrated circuit 41 specifically can adopt NRF2401P chip, and this chip can realize the high-power remote transmission of wireless data.
In the embodiment of the present invention, power supply 50 can adopt disposable battery, for sonic transducer 10, signal keep providing electric energy with filtering circuit 20, control circuit 30, wireless receiver 40.
Preferably, in the embodiment of the present invention, control circuit 30 adopts the discontinuous operation pattern of little dutycycle.Shown in Figure 3, this dutycycle is specially:
Wherein, D is dutycycle, T
1for waking the working time up, T
2for dormancy time, T=T
1+ T
2, indication cycle's time.In the embodiment of the present invention, T
1<<T
2, namely dormancy time is far longer than and wakes the working time up.
The workflow of this radio noise sensor is specific as follows: under power supply 50 continued power, the work of control circuit 30 timing wake-up, and now control circuit 30 is in and wakes duty up; Control circuit 30 wakes sonic transducer 10 up, sonic transducer 10 acquisition noise information, and keeps this noise information being sent to control circuit 30, control circuit 30 and then noise information is sent to wireless receiver 40 with filtering circuit 20 by signal; The noise information received is sent by antenna 42 by wireless receiver 40; Radio noise sensor can enter dormant state after completing and measuring transmission task.
In the embodiment of the present invention, control circuit 30 adopts the discontinuous operation pattern of little dutycycle, and complete the time compole measuring transmission work short, dormancy time reaches 1,000 times with the time of waking the working time up than maximum.And the overall current consumption of radio noise sensor is microampere rank during dormancy.Therefore, whole radio noise biosensor power consumption extremely low (average current consumption is microampere order), also also can regularly send the data measuring gained by Long-Time Service when only using disposable battery.Thus it is online for a long time and non-maintaining to realize radio noise sensor.Meanwhile, in dormancy time section, signal keeps noise information to be kept a period of time with filtering circuit 20, thus makes the difference AD circuit of control circuit 30 inside complete analog to digital conversion smoothly.
Preferably, signal keeps being connected with control circuit 30 by AD interface with filtering circuit 20; Wireless receiver 40 is connected with control circuit 30 by SPI interface.When wireless receiver 40 comprises radio-frequency receiving-transmitting integrated circuit 41, antenna 42 and crystal resonator 43, the bidirectional interface of radio-frequency receiving-transmitting integrated circuit 41 is connected with control circuit 30 by SPI interface.
Preferably, radio noise sensor also comprises: upper cover 60 and drain pan 70, and upper cover 60 and drain pan 70 are by screw or be welded and fixed connection.Sonic transducer 10, signal keep being packaged in filtering circuit 20, control circuit 30, wireless receiver 40 and power supply 50 in the space that upper cover 60 and drain pan 70 form.Specifically shown in Figure 4, signal keeps being arranged on circuit board 80 with the radio-frequency receiving-transmitting integrated circuit 41 of filtering circuit 20, control circuit 30, wireless receiver 40 and crystal resonator 43, and circuit board 80 is fixed on drain pan 70; Antenna 42 is fixed on upper cover 60, and antenna 42 is connected with the radio-frequency receiving-transmitting integrated circuit 41 on circuit board 80 by feeder line 44; Feeder line 44 is welded on circuit board 80.
This radio noise sensor external is without interface and space, and water proof and dust proof is functional, can improve IP (IngressProtection, the degree of protection) grade of radio noise sensor; Can long continuous operation under powered battery condition, realize high reliability on-line monitoring noise.
A kind of radio noise sensor that the embodiment of the present invention provides, keeps only sampling power frequency and neighbouring frequency noise with filtering circuit by signal, guarantees to measure the data obtained not containing clutter and peripheral noise; Signal keeps measuring noise within the scope of power frequency with filtering circuit for the application-specific of electric power environmental, and measurement result is more accurate, and this radio noise sensor is specially adapted to detect power equipment.Control circuit adopts the discontinuous operation pattern of little dutycycle, radio noise biosensor power consumption is extremely low, also also can regularly send the data measuring gained by Long-Time Service when only using disposable battery, thus it is online for a long time and non-maintaining to realize radio noise sensor.Meanwhile, this radio noise sensor external is without interface and space, and water proof and dust proof is functional, can improve the IP grade of radio noise sensor; Can long continuous operation under powered battery condition, realize high reliability on-line monitoring noise.
The present invention can have multiple multi-form embodiment; above for Fig. 1-Fig. 4 by reference to the accompanying drawings to technical scheme of the present invention explanation for example; this does not also mean that the instantiation that the present invention applies can only be confined in specific flow process or example structure; those of ordinary skill in the art should understand; specific embodiments provided above is some examples in multiple its preferred usage, and the embodiment of any embodiment the claims in the present invention all should within technical solution of the present invention scope required for protection.
Last it is noted that the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment to invention has been detailed description, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a radio noise sensor, is characterized in that, comprising: sonic transducer, signal keep and filtering circuit, control circuit, wireless receiver and power supply; The inner integrated difference AD circuit of described control circuit;
Described sonic transducer keeps being connected with described control circuit with filtering circuit by described signal, described wireless receiver is connected with described control circuit, and described power supply keeps with described sonic transducer, described signal being connected with filtering circuit, described control circuit, described wireless receiver respectively.
2. radio noise sensor according to claim 1, is characterized in that, described control circuit adopts the discontinuous operation pattern of little dutycycle.
3. radio noise sensor according to claim 2, is characterized in that, when described control circuit adopts the discontinuous operation pattern of little dutycycle, described dutycycle is:
Wherein, D is dutycycle, T
1for waking the working time up, T
2for dormancy time.
4. radio noise sensor according to claim 1, is characterized in that, also comprise: upper cover and drain pan, described upper cover and described drain pan are by screw or be welded and fixed connection;
Described sonic transducer, described signal keep with filtering circuit, described control circuit, described wireless receiver and described power package in the space that described upper cover and described drain pan form.
5., according to the arbitrary described radio noise sensor of claim 1-4, it is characterized in that, described wireless receiver comprises radio-frequency receiving-transmitting integrated circuit, antenna and crystal resonator.
6., according to the arbitrary described radio noise sensor of claim 1-4, it is characterized in that, described sonic transducer is the high-precision sonic transducer of electret-type.
7. according to the arbitrary described radio noise sensor of claim 1-4, it is characterized in that, described signal keeps being connected with described control circuit by AD interface with filtering circuit;
Described wireless receiver is connected with described control circuit by SPI interface.
8., according to the arbitrary described radio noise sensor of claim 1-4, it is characterized in that, described control circuit comprises main control chip and peripheral circuit;
Described main control chip is MSP430 series monolithic chip.
9. radio noise sensor according to claim 5, is characterized in that, described radio-frequency receiving-transmitting integrated circuit is NRF2401P chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410193251.6A CN105092991A (en) | 2014-05-08 | 2014-05-08 | Wireless noise sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410193251.6A CN105092991A (en) | 2014-05-08 | 2014-05-08 | Wireless noise sensor |
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|---|---|
| CN105092991A true CN105092991A (en) | 2015-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410193251.6A Pending CN105092991A (en) | 2014-05-08 | 2014-05-08 | Wireless noise sensor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017036205A1 (en) * | 2015-09-01 | 2017-03-09 | 深圳Tcl数字技术有限公司 | Terminal screen shaking identification method and apparatus |
| CN111867025A (en) * | 2020-08-04 | 2020-10-30 | 隔空（上海）智能科技有限公司 | Low-power consumption microwave sensor and control circuit thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2529222Y (en) * | 2001-03-26 | 2003-01-01 | 上海电器科学研究所 | Digital vibration noise measuring instrument |
| US20060172784A1 (en) * | 2005-01-31 | 2006-08-03 | Hitachi, Ltd. | Sensor node, base station, and sensor network system |
| CN101021435A (en) * | 2007-03-23 | 2007-08-22 | 南京大学 | Multi-channel noise and libration testing method and tester |
| CN101545805A (en) * | 2008-12-12 | 2009-09-30 | Bcd半导体制造有限公司 | POP noise test system and method |
| CN101832813A (en) * | 2010-05-17 | 2010-09-15 | 南京大学 | Noise and Vibration-Measuring System based on virtual instrument technique |
| CN203260179U (en) * | 2013-05-24 | 2013-10-30 | 南京铁道职业技术学院 | Wireless high-speed train noise monitoring system |
-
2014
- 2014-05-08 CN CN201410193251.6A patent/CN105092991A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2529222Y (en) * | 2001-03-26 | 2003-01-01 | 上海电器科学研究所 | Digital vibration noise measuring instrument |
| US20060172784A1 (en) * | 2005-01-31 | 2006-08-03 | Hitachi, Ltd. | Sensor node, base station, and sensor network system |
| CN1815924A (en) * | 2005-01-31 | 2006-08-09 | 株式会社日立制作所 | Sensor node, base station, and sensor network system |
| CN101021435A (en) * | 2007-03-23 | 2007-08-22 | 南京大学 | Multi-channel noise and libration testing method and tester |
| CN101545805A (en) * | 2008-12-12 | 2009-09-30 | Bcd半导体制造有限公司 | POP noise test system and method |
| CN101832813A (en) * | 2010-05-17 | 2010-09-15 | 南京大学 | Noise and Vibration-Measuring System based on virtual instrument technique |
| CN203260179U (en) * | 2013-05-24 | 2013-10-30 | 南京铁道职业技术学院 | Wireless high-speed train noise monitoring system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017036205A1 (en) * | 2015-09-01 | 2017-03-09 | 深圳Tcl数字技术有限公司 | Terminal screen shaking identification method and apparatus |
| CN111867025A (en) * | 2020-08-04 | 2020-10-30 | 隔空（上海）智能科技有限公司 | Low-power consumption microwave sensor and control circuit thereof |
| CN111867025B (en) * | 2020-08-04 | 2023-01-24 | 隔空（上海）智能科技有限公司 | Low-power consumption microwave sensor and control circuit thereof |
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Application publication date: 20151125 |
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