CN101980047A - Low-power consumption detection structure - Google Patents
Low-power consumption detection structure Download PDFInfo
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- CN101980047A CN101980047A CN201010502865XA CN201010502865A CN101980047A CN 101980047 A CN101980047 A CN 101980047A CN 201010502865X A CN201010502865X A CN 201010502865XA CN 201010502865 A CN201010502865 A CN 201010502865A CN 101980047 A CN101980047 A CN 101980047A
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Abstract
The invention discloses a low-power consumption detection structure, which comprises an ultrasonic detector and a frequency modulation circuit matched with the ultrasonic detector. The low-power consumption detection structure can overcome the defects of low transmitting frequency, high power consumption, energy waste and the like in the prior art so as to achieve the advantages of high transmitting frequency, low power consumption and energy conservation.
Description
Technical field
The present invention relates to the ultrasonic listening technology, particularly, relate to a kind of low-power consumption detecting structure.
Background technology
In the ultrasonic listening technology, ultrasonic detector is to utilize the unheard ultrasound wave of people's ear (more than the 20000Hz) to be used as the alarm detector of detection source, can be used for surveying the space probe of mobile object.
Structure and installation method according to ultrasonic detector, ultrasonic detector can be divided into two classes: ⑴ is installed in two ultrasonic transducers in the same housing, be that the type of putting is closed in sending and receiving, its principle of work is based on the Doppler effect of sound wave, is also referred to as Doppler type; The energy field distribution of this ultrasonic detector ultrasonic waves transmitted have certain directivity, is generally towards the ovalize energy field distribution of direction zone; ⑵ be placed on different positions respectively with two transducers, and promptly the sending and receiving separated set type is called sound field type detector, and its transmitter and receiver adopt non-directional type (being omni-directional) transducer or half to the type transducer more; Non-directional type transducer produces the energy field distribution pattern of dome-type, and half produces taper to type can the field distribution pattern.
Wherein, the ultrasonic detector fence coverage that sending and receiving split is big, several hectosteres of may command space, and many groups are used and can be guarded against bigger space.In addition, the space sealing requirement height of ultrasonic detector is installed, the jumbo air flow that do not have can not have too much door and window and need close; Should avoid ventilation equipment and gas flow; Space sound insulation value with the ultrasonic detector protection will be got well, to reduce the wrong report that outside noise causes; Ultrasound wave does not have penetrability to object, should avoid blocking of object when therefore using, and glass, dividing plate, door etc. are relatively poor to hyperacoustic reflection potential, therefore should be over against installation.As transmission medium, so the temperature of air and relative humidity can influence its detection sensitivity to ultrasound wave with air; When temperature be 21 ℃, during relative humidity 38%, hyperacoustic decay is the most serious, investigative range is also minimum.
At present, in the ultrasonic listening technology, the transmission frequency of ultrasonic detector is lower, and power consumption is bigger, is unfavorable for the saving of the energy.
As seen, in realizing process of the present invention, the inventor finds to exist at least in the prior art defectives such as transmission frequency is low, power consumption big and waste energy.
Summary of the invention
The objective of the invention is to,, propose a kind of low-power consumption detecting structure at the problems referred to above, with realize the transmission frequency height, power consumption is little and the advantage of energy savings.
For achieving the above object, the technical solution used in the present invention is: a kind of low-power consumption detecting structure, comprise ultrasonic detector, and the FM circuit that is equipped with described ultrasonic detector.
Further, described FM circuit comprises triode Q1, first to the two not gate N1-N2, Sheffer stroke gate N3, capacitor C 1, first resistance R 1 and first to the three resistance R 1-R3, wherein: the collector of described triode Q1 is connected with the detecting head of ultrasonic detector, emitter is through first resistance R 1, be connected with the emitting head of ultrasonic detector, and base stage is connected with the output terminal of the first not gate N1; The first input end of described Sheffer stroke gate N3 is connected with the reception head of ultrasonic detector, and second input end is through the 3rd resistance R 3 and second resistance R 2, be connected with the output terminal of Sheffer stroke gate N3, and output terminal is connected with the input end of the second not gate N2; The output terminal of the described second not gate N2 is connected with the input end of the first not gate N1, and through capacitor C 1, be connected with the common port of second resistance R 2 and the 3rd resistance R 3.
The low-power consumption detecting structure of various embodiments of the present invention, owing to comprise ultrasonic detector, and the FM circuit that is equipped with ultrasonic detector; Can after receiving signal, improve transmission frequency automatically, with energy savings; Transmission frequency in the prior art is low, power consumption is big and the defective that wastes energy thereby can overcome, with realize the transmission frequency height, power consumption is little and the advantage of energy savings.
Other features and advantages of the present invention will be set forth in the following description, and, partly from instructions, become apparent, perhaps understand by implementing the present invention.Purpose of the present invention and other advantages can realize and obtain by specifically noted structure in the instructions of being write, claims and accompanying drawing.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of instructions, is used from explanation the present invention with embodiments of the invention one, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the principle of work synoptic diagram of the low-power consumption detecting structure according to the present invention.
In conjunction with the accompanying drawings, Reference numeral is as follows in the embodiment of the invention:
The detecting head of 1-ultrasonic detector; The emitting head of 2-ultrasonic detector; The reception head of 3-ultrasonic detector.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the present invention, and be not used in qualification the present invention.
According to the embodiment of the invention, provide a kind of low-power consumption detecting structure.As shown in Figure 1, present embodiment comprises ultrasonic detector, and the FM circuit that is equipped with ultrasonic detector.
Particularly, in the above-described embodiments, FM circuit comprises triode Q1, first to the two not gate N1-N2, Sheffer stroke gate N3, capacitor C 1, first resistance R 1 and first to the three resistance R 1-R3, wherein: the collector of triode Q1 is connected with the detecting head of ultrasonic detector 1, emitter is through first resistance R 1, be connected with the emitting head 2 of ultrasonic detector, and base stage is connected with the output terminal of the first not gate N1; The first input end of Sheffer stroke gate N3 and the reception of ultrasonic detector 3 is connected, and second input end is through the 3rd resistance R 3 and second resistance R 2, be connected with the output terminal of Sheffer stroke gate N3, and output terminal is connected with the input end of the second not gate N2; The output terminal of the second not gate N2 is connected with the input end of the first not gate N1, and through capacitor C 1, be connected with the common port of second resistance R 2 and the 3rd resistance R 3.
In the above-described embodiments, after signal was received in the reception of ultrasonic detector 3, FM circuit can improve the transmission frequency of the emitting head 2 of ultrasonic detector automatically, helps energy savings.
In sum, the low-power consumption detecting structure of various embodiments of the present invention, owing to comprise ultrasonic detector, and the FM circuit that is equipped with ultrasonic detector; Can after receiving signal, improve transmission frequency automatically, with energy savings; Transmission frequency in the prior art is low, power consumption is big and the defective that wastes energy thereby can overcome, with realize the transmission frequency height, power consumption is little and the advantage of energy savings.
It should be noted that at last: the above only is the preferred embodiments of the present invention, be not limited to the present invention, although the present invention is had been described in detail with reference to previous embodiment, for a person skilled in the art, it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (2)
1. a low-power consumption detecting structure is characterized in that, comprises ultrasonic detector, and the FM circuit that is equipped with described ultrasonic detector.
2. low-power consumption detecting structure according to claim 1 is characterized in that, described FM circuit comprises triode Q1, first to the two not gate N1-N2, Sheffer stroke gate N3, capacitor C 1, first resistance R 1 and first to the three resistance R 1-R3, wherein:
The collector of described triode Q1 is connected with the detecting head of ultrasonic detector, and emitter is through first resistance R 1, be connected with the emitting head of ultrasonic detector, and base stage is connected with the output terminal of the first not gate N1;
The first input end of described Sheffer stroke gate N3 is connected with the reception head of ultrasonic detector, and second input end is through the 3rd resistance R 3 and second resistance R 2, be connected with the output terminal of Sheffer stroke gate N3, and output terminal is connected with the input end of the second not gate N2;
The output terminal of the described second not gate N2 is connected with the input end of the first not gate N1, and through capacitor C 1, be connected with the common port of second resistance R 2 and the 3rd resistance R 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010502865XA CN101980047A (en) | 2010-10-11 | 2010-10-11 | Low-power consumption detection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010502865XA CN101980047A (en) | 2010-10-11 | 2010-10-11 | Low-power consumption detection structure |
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| CN101980047A true CN101980047A (en) | 2011-02-23 |
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| CN201010502865XA Pending CN101980047A (en) | 2010-10-11 | 2010-10-11 | Low-power consumption detection structure |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1087437A (en) * | 1992-11-21 | 1994-06-01 | 来钢 | Method and apparatus with producing remote control command signal by dance movement |
| CN2269445Y (en) * | 1996-12-12 | 1997-12-03 | 刘兴田 | Anti-theft door bolt |
| CN201852935U (en) * | 2010-10-11 | 2011-06-01 | 无锡宏达重型锻压有限公司 | Detection structure with low power consumption |
-
2010
- 2010-10-11 CN CN201010502865XA patent/CN101980047A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1087437A (en) * | 1992-11-21 | 1994-06-01 | 来钢 | Method and apparatus with producing remote control command signal by dance movement |
| CN2269445Y (en) * | 1996-12-12 | 1997-12-03 | 刘兴田 | Anti-theft door bolt |
| CN201852935U (en) * | 2010-10-11 | 2011-06-01 | 无锡宏达重型锻压有限公司 | Detection structure with low power consumption |
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Application publication date: 20110223 |