CN103675937A - Photoelectric detection device - Google Patents
Photoelectric detection device Download PDFInfo
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- CN103675937A CN103675937A CN201310622618.7A CN201310622618A CN103675937A CN 103675937 A CN103675937 A CN 103675937A CN 201310622618 A CN201310622618 A CN 201310622618A CN 103675937 A CN103675937 A CN 103675937A
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Abstract
The invention discloses a photoelectric detection device which comprises an operational amplifier A1, a loudspeaker BL, a switch S, triodes T1, T2 and T3, resistors R1, R2, R3, R4, R5 and R6, capacitors C1, C2, C3, C4, C5, C6, C7, C8 and C9, and inductors L1 and L2. A collector electrode of the triode T1 is sequentially and serially connected with base electrodes of the inductor L1, the capacitor C1, the resistor R1 and the triode T2, the resistor R2 is connected between the collector electrode and a base electrode of the triode T1, the capacitor C2 is connected between the resistor R2 and a ground terminal of the triode T1, and an emitting electrode of the triode T1 is connected with an emitting electrode of the triode T2. The emitting electrode of the triode T1 is sequentially and serially connected with the inductor L2, the capacitor C3, the resistor R4, the capacitor R4, the resistor R6 and a ground terminal, and the resistor R5 is connected with a common terminal of the capacitor C3 and the resistor R4 as well as an emitting electrode and a ground terminal of the triode T3. Through the principle, metal parts such as underground metal pipelines, iron nail remaining in wood boards and the like can be positioned accurately, overhauling of the metal pipelines is benefitted, forest exploration people can be prevented from being injured by the metal part when using the photoelectric detection device, and the photoelectric detection device is high in practicality.
Description
Technical field
The present invention relates to photodetection field, be specifically related to Electro-Optical Sensor Set.
Background technology
Photodetector refers to by radiation and causes a kind of physical phenomenon that illuminated material electric conductivity changes.Photodetector has extensive use in the every field of military and national economy.At visible ray or near-infrared band, be mainly used in radionetric survey and detection, industry automatic control, Photometric Measurement etc.; At infrared band, be mainly used in the aspects such as missile guidance, infrared thermal imaging, infrared remote sensing.The Another Application of photoconductor is to do pick-up tube target surface with it.Photodetector can be converted to electric signal light signal.Different to the mechanism of the mode difference device work in other words of radiometric response according to device, photodetector can be divided into two large classes: a class is photon detector; Another kind of is thermal detector.Photodetector is based on photoelectric effect, and after thermal detector has absorbed optical radiation energy based on material, temperature raises, thereby has changed its electric property, and the maximum feature that it is different from photon detector is the wavelength non-selectivity to optical radiation.Existing pick-up unit cannot accurately be realized the detection to residual iron nail in plank in the searching location of underground metallic conduit and forest, be unfavorable for the maintenance of underground metallic conduit and be unfavorable for life safety in forest exploration personnel's use procedure, with potential safety hazard.
Summary of the invention
The present invention has overcome the deficiencies in the prior art, Electro-Optical Sensor Set is provided, adopt this circuit can accurately positioningly descend the metal parts such as residual iron nail in metallic conduit, plank, can avoid while being conducive to maintenance, the forest exploration librarian use of metallic conduit hurt by metal parts, practical.
For solving above-mentioned technical matters, the present invention is by the following technical solutions: Electro-Optical Sensor Set, comprise operational amplifier A 1, loudspeaker BL, switch S, triode T1, triode T2, triode T3, resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R 6, capacitor C 1, capacitor C 2, capacitor C 3, capacitor C 4, capacitor C 5, capacitor C 6, capacitor C 7, capacitor C 8, capacitor C 9, inductance L 1 and inductance L 2, the collector of described triode T1 is series inductance L1 successively, capacitor C 1, the basis set of resistance R 1 and triode T2, contact resistance R2 between the collector of triode T1 and basis set, between resistance R 2 and earth terminal, connect capacitor C 2, the emitter of triode T1 is connected with the emitter of triode T2, the emitter of described triode T1 is connected in series inductance L 2, capacitor C 3, resistance R 4, capacitor C 4, resistance R 6 and earth terminal successively, resistance R 5 connects the common port of capacitor C 3 and resistance R 4, emitter and the earth terminal of triode T3 simultaneously, between capacitor C 1 contact resistance R4 and the common port and earth terminal of capacitor C 4, described capacitor C 7 is connected to sliding end and in the same way between the input end of operational amplifier A 1 of resistance R 6, the output terminal of described operational amplifier A 1 is series capacitance C9, loudspeaker BL and earth terminal successively, described resistance R 3 connects the collector of inductance L 1, resistance R 2, triode T1, basis set and the collector of triode T3 simultaneously, the collector of triode T3 is tandem tap S, capacitor C 8 and earth terminal successively also, and described capacitor C 5 is connected between the collector and earth terminal of triode T3.
The reverse input end ground connection of described operational amplifier A 1.
The forward power end of described operational amplifier A 1 is connecting valve S also.
Described resistance R 6 is slide rheostat, and sliding end connects capacitor C 7.
The size of described inductance L 1 and the equal and opposite in direction of inductance L 2.
Compared with prior art, the invention has the beneficial effects as follows: by stating circuit, can positioningly descend accurately the metal parts such as residual iron nail in metallic conduit, plank, be applied in actual production, the maintenance that underground metallic conduit can convenient for maintaining personnel detected, in the plank of location, residual iron nail can be guaranteed forest exploration personnel's life safety, and this circuit is easy to use, practical.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further elaborated, and embodiments of the invention are not limited to this.
Embodiment:
As shown in Figure 1, the present invention includes operational amplifier A 1, loudspeaker BL, switch S, triode T1, triode T2, triode T3, resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R 6, capacitor C 1, capacitor C 2, capacitor C 3, capacitor C 4, capacitor C 5, capacitor C 6, capacitor C 7, capacitor C 8, capacitor C 9, inductance L 1 and inductance L 2, the reverse input end ground connection of operational amplifier A 1, the forward power end of operational amplifier A 1 is connecting valve S also, resistance R 6 is slide rheostat, sliding end connects capacitor C 7, the equal and opposite in direction of the size of inductance L 1 and inductance L 2.The collector of the triode T1 of the present embodiment is the basis set of series inductance L1, capacitor C 1, resistance R 1 and triode T2 successively, between the collector of triode T1 and basis set, between contact resistance R2, resistance R 2 and earth terminal, connect capacitor C 2, the emitter of triode T1 is connected with the emitter of triode T2; The emitter of described triode T1 is connected in series inductance L 2, capacitor C 3, resistance R 4, capacitor C 4, resistance R 6 and earth terminal successively, resistance R 5 connects the common port of capacitor C 3 and resistance R 4, emitter and the earth terminal of triode T3 simultaneously, between capacitor C 1 contact resistance R4 and the common port and earth terminal of capacitor C 4.The capacitor C 7 of the present embodiment is connected to sliding end and in the same way between the input end of operational amplifier A 1 of resistance R 6; The output terminal of operational amplifier A 1 is series capacitance C9, loudspeaker BL and earth terminal successively.The resistance R 3 of the present embodiment connects the collector of inductance L 1, resistance R 2, triode T1, basis set and the collector of triode T3 simultaneously, the collector of triode T3 is tandem tap S, capacitor C 8 and earth terminal successively also, and described capacitor C 5 is connected between the collector and earth terminal of triode T3.
This circuit comprises detecting oscillations device circuit, base frequency oscillation device circuit and audio-frequency amplifier circuit, detecting oscillations device circuit comprises the compositions such as triode T1, T2, inductance L 1 and capacitor C 1, base frequency oscillation device circuit comprises triode T1, T3, inductance L 2 and capacitor C 5 etc., audio-frequency amplifier circuit comprises operational amplifier A 1, slide rheostat R6 and capacitor C 7-C9 etc., when metal objects not detected, the frequency of operation of detecting oscillations device is identical with the frequency of operation of base frequency oscillation device, the emitter of triode T3 does not have sound signal output, voiceless sound in loudspeaker.When inductance L 1 detects, undergroundly have after metal object, the frequency of operation of detecting oscillations device uprises, a sound signal of emitter output of triode T3, and signal, after operational amplifier amplifies, drives loudspeaker BL sounding, and prompting user detects metal.By this circuit, the maintenance that underground metallic conduit can convenient for maintaining personnel detected, in the plank of location, residual iron nail can be guaranteed forest exploration personnel's life safety, practical.
Just can realize this invention as mentioned above.
Claims (5)
1. electric detection device, it is characterized in that: comprise operational amplifier A 1, loudspeaker BL, switch S, triode T1, triode T2, triode T3, resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R 6, capacitor C 1, capacitor C 2, capacitor C 3, capacitor C 4, capacitor C 5, capacitor C 6, capacitor C 7, capacitor C 8, capacitor C 9, inductance L 1 and inductance L 2, the collector of described triode T1 is series inductance L1 successively, capacitor C 1, the basis set of resistance R 1 and triode T2, contact resistance R2 between the collector of triode T1 and basis set, between resistance R 2 and earth terminal, connect capacitor C 2, the emitter of triode T1 is connected with the emitter of triode T2, the emitter of described triode T1 is connected in series inductance L 2, capacitor C 3, resistance R 4, capacitor C 4, resistance R 6 and earth terminal successively, resistance R 5 connects the common port of capacitor C 3 and resistance R 4, emitter and the earth terminal of triode T3 simultaneously, between capacitor C 1 contact resistance R4 and the common port and earth terminal of capacitor C 4, described capacitor C 7 is connected to sliding end and in the same way between the input end of operational amplifier A 1 of resistance R 6, the output terminal of described operational amplifier A 1 is series capacitance C9, loudspeaker BL and earth terminal successively, described resistance R 3 connects the collector of inductance L 1, resistance R 2, triode T1, basis set and the collector of triode T3 simultaneously, the collector of triode T3 is tandem tap S, capacitor C 8 and earth terminal successively also, and described capacitor C 5 is connected between the collector and earth terminal of triode T3.
2. Electro-Optical Sensor Set according to claim 1, is characterized in that: the reverse input end ground connection of described operational amplifier A 1.
3. Electro-Optical Sensor Set according to claim 1, is characterized in that: the forward power end of described operational amplifier A 1 is connecting valve S also.
4. Electro-Optical Sensor Set according to claim 1, is characterized in that: described resistance R 6 is slide rheostat, and sliding end connects capacitor C 7.
5. Electro-Optical Sensor Set according to claim 1, is characterized in that: the size of described inductance L 1 and the equal and opposite in direction of inductance L 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310622618.7A CN103675937A (en) | 2013-11-30 | 2013-11-30 | Photoelectric detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310622618.7A CN103675937A (en) | 2013-11-30 | 2013-11-30 | Photoelectric detection device |
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| Publication Number | Publication Date |
|---|---|
| CN103675937A true CN103675937A (en) | 2014-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310622618.7A Pending CN103675937A (en) | 2013-11-30 | 2013-11-30 | Photoelectric detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105607132A (en) * | 2015-12-17 | 2016-05-25 | 无锡信大气象传感网科技有限公司 | Oscillation detection-based metal detector |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4300097A (en) * | 1979-07-27 | 1981-11-10 | Techna, Inc. | Induction balance metal detector with ferrous and non-ferrous metal identification |
| US4334192A (en) * | 1979-01-29 | 1982-06-08 | Garrett Electronics | Metal detector circuit having automatic tuning with multiple rates |
| JP2004125487A (en) * | 2002-09-30 | 2004-04-22 | Nohmi Bosai Ltd | Pyroelectric element |
| CN103123334A (en) * | 2011-11-20 | 2013-05-29 | 常州先进制造技术研究所 | High-precision microparticle metal detection DDS (Direct Digital Synthesizer) circuit |
-
2013
- 2013-11-30 CN CN201310622618.7A patent/CN103675937A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4334192A (en) * | 1979-01-29 | 1982-06-08 | Garrett Electronics | Metal detector circuit having automatic tuning with multiple rates |
| US4300097A (en) * | 1979-07-27 | 1981-11-10 | Techna, Inc. | Induction balance metal detector with ferrous and non-ferrous metal identification |
| JP2004125487A (en) * | 2002-09-30 | 2004-04-22 | Nohmi Bosai Ltd | Pyroelectric element |
| CN103123334A (en) * | 2011-11-20 | 2013-05-29 | 常州先进制造技术研究所 | High-precision microparticle metal detection DDS (Direct Digital Synthesizer) circuit |
Non-Patent Citations (1)
| Title |
|---|
| 伊大成: "《微型金属探测器》", 《电子制作》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105607132A (en) * | 2015-12-17 | 2016-05-25 | 无锡信大气象传感网科技有限公司 | Oscillation detection-based metal detector |
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Application publication date: 20140326 |