CN202511881U - Circuit for conditioning and amplifying light intensity of laser - Google Patents
Circuit for conditioning and amplifying light intensity of laser Download PDFInfo
- Publication number
- CN202511881U CN202511881U CN2012201526025U CN201220152602U CN202511881U CN 202511881 U CN202511881 U CN 202511881U CN 2012201526025 U CN2012201526025 U CN 2012201526025U CN 201220152602 U CN201220152602 U CN 201220152602U CN 202511881 U CN202511881 U CN 202511881U
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- capacitor
- diode
- amplifier
- resistor
- circuit
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Abstract
The utility model relates to a circuit for conditioning and amplifying light intensity of a laser. The circuit comprises a voltage end accessed into the circuit, wherein the voltage end is connected with one end of a pull-up resistor for ensuring that the circuit has a potential value; the other end of the pull-up resistor is connected with a diode D1 and a diode D2 in parallel; the diode D1 and the diode D2 are connected with a resistor R2 for ensuring that the potential differences of the diode D1 and the diode D2 are equal; an inductor L1 is connected with the part between the pull-up resistor and the diode D1; an inductor L2 is connected with the part between the pull-up resistor and the diode D2; the inductor L1 and the inductor L2 are commonly connected with one end of an amplifier; the other end of the amplifier is serially connected with a capacitor C4; the other end of the amplifier is also connected with a capacitor C3 and a capacitor C4 for outputting signal filter action; the capacitor C3 is connected with the capacitor C4 in parallel; a voltage output end Vout is connected with the part between the amplifier and the capacitor C3, and a quasi voltage value Vref for outputting a signal is connected with the part between the amplifier and the capacitor C4. The circuit disclosed by the utility model has the advantages that an interference signal is restrained, so that the output signal obtains a high-precision value.
Description
Technical field
The utility model relates to a kind of laser intensity conditioning amplifying circuit.
Background technology
Stress because light intensity signal is very faint signal, to be very small signal in the reason amplifier circuit at laser in the past; As long as the outside has some to disturb a little, directly the signal to the laser intensity collection has very big interference, through common amplifying circuit; And output signal that causes and undesired signal are amplified simultaneously; The signal bias normal value that makes output falls the signal conductively-closed that is lower than interference value, thereby causes measuring error to strengthen.
Summary of the invention
The purpose of the utility model is in order to overcome above deficiency, to provide a kind of undesired signal that makes to be inhibited, exporting the laser intensity conditioning amplifying circuit that signal obtains the high precision value thereby make.
The purpose of the utility model realizes through following technical scheme: a kind of laser intensity conditioning amplifying circuit; Said amplifying circuit comprises the voltage end of place in circuit; Voltage end links to each other with an end of pull-up resistor, and the other end of pull-up resistor is connected in parallel to diode D1 and diode D2, and diode D1 and diode D2 all are connected with resistance R 2; Position between pull-up resistor and the diode D1 is connected with inductance L 1; Position between pull-up resistor and the diode D2 is connected with inductance L 2, and inductance L 1 and inductance L 2 are connected with an end of amplifier jointly, and the other end of amplifier is in series with capacitor C 4; The other end of amplifier also is connected with capacitor C 3 and capacitor C 4; Capacitor C 3 and capacitor C 4 parallel connections, the position between amplifier and the capacitor C 3 is connected with voltage output end Vout, and the position between amplifier and the capacitor C 4 is connected with the accurate magnitude of voltage Vref that is used to export signal.
The further improvement of the utility model is: the position between said inductance L 1 and the amplifier is connected with the filtering circuit of capacitor C 2 and resistance R 5 compositions, capacitor C 2 and resistance R 5 parallel connections.
The further improvement of the utility model is: the position between said inductance L 2 and the amplifier is connected with the filtering circuit of capacitor C 1 and resistance R 4 compositions, capacitor C 1 and resistance R 4 parallel connections.
The further improvement of the utility model is: said amplifier also is connected with adjustable resistor R7.
The utility model compared with prior art has the following advantages: in the laser intensity Acquisition Circuit, before input signal, add Filtering Processing, also done corresponding adjustment at the conditioning amplifying circuit; Laser light intensity signal is got in the light intensity conditioning amplifying circuit, the undesired signal in the input signal is inhibited, amplify through signal; Make the output signal obtain quite high-precision value; The precision of testing result is increased, guaranteeing the jamproof while, measuring accuracy is compared and has been improved 3%.
Description of drawings:
Fig. 1 is the structural representation of the utility model;
Label among the figure: 1-voltage end, 2-pull-up resistor, 3-diode D1,4-diode D2,5-resistance R 2,6-inductance L 1,7-inductance L 2,8-amplifier, 9-capacitor C 4,10-capacitor C 3,11-voltage output end Vout, the accurate magnitude of voltage Vref of 12-, 13-capacitor C 2,14-resistance R 5,15-capacitor C 1,16-resistance R 4,17-resistor R 7.
Embodiment:
In order to deepen understanding to the utility model, will combine embodiment and accompanying drawing that the utility model is done further to detail below, this embodiment only is used to explain the utility model, does not constitute the qualification to the utility model protection domain.
Show a kind of embodiment that the utility model laser intensity is nursed one's health amplifying circuit like Fig. 1, said amplifying circuit comprises the voltage end 1 of place in circuit, and voltage end 1 links to each other with an end of pull-up resistor 2; The other end of pull-up resistor 2 is connected in parallel to diode D1 and diode D2, and diode D1 and diode D2 all are connected with resistance R 2, and the position between pull-up resistor 2 and the diode D1 is connected with inductance L 1; Position between pull-up resistor 2 and the diode D2 is connected with inductance L 2; Inductance L 1 and inductance L 2 are connected with an end of amplifier 8 jointly, and the other end of amplifier 8 is in series with capacitor C 4, and the other end of amplifier 8 also is connected with capacitor C 3 and capacitor C 4; Capacitor C 3 and capacitor C 4 parallel connections; Position between amplifier 8 and the capacitor C 3 is connected with voltage output end Vout, and the position between amplifier 8 and the capacitor C 4 is connected with the accurate magnitude of voltage Vref that is used to export signal, and the position between inductance L 1 and the amplifier is connected with the filtering circuit of capacitor C 2 and resistance R 5 compositions; Capacitor C 2 and resistance R 5 parallel connections; Position between inductance L 2 and the amplifier 8 is connected with the filtering circuit of capacitor C 1 and resistance R 4 compositions, capacitor C 1 and resistance R 4 parallel connections, and amplifier 8 also is connected with adjustable resistor R7.
Diode D1 and diode D2 all are high frequency light electric diodes in the described amplifying circuit of the utility model, and wherein diode D1 is used to receive outside laser intensity, and diode D2 is used for receiving light power degree benchmark; Change the light intensity of laser through outside gas circuit, the received signal source generation of diode D1 relevant numerical is changed, the reference signal with diode D2 Phase Receiver compares again; Input to inductance L 1 and said inductance L 2 as input signal, wherein pull-up resistor is used to guarantee that circuit has certain potential value, and the resistance value of two resistance R 2 equates; Thereby guaranteed that diode D1 is the same with the potential difference (PD) of diode D2; Inductance L 1 is that the light intensity diode receives the Signal Processing element with inductance L 2, carries out the signal filtering effect, eliminates the undesired signal of a part; Guarantee the elimination burr of signal; The filtering circuit that the rearmounted capacitor C 2 of inductance L 1 and inductance L 2 and resistance R 5 and capacitor C 1 and resistance R 4 are formed guarantees in the light intensity conditioning amplifying circuit that amplifier can operate as normal, can not receive external interference and influences the work of conditioning amplifier; The changing value of light intensity is through behind the inductor filter; Send into the conditioning amplification that carries out signal in the light intensity conditioning amplifier 8 to signal, resistor R 7 plays the signal amplification in the conditioning amplifying circuit, makes amplifying signal after the output reach the desired value of later stage collector; Capacitor C 3 plays the filter action of output signal with capacitor C 4 at output terminal, thereby has guaranteed the accuracy requirement of final output signal.
The described amplifying circuit of the utility model applies in the laser light intensity signal condition amplification in the Inhalable Particulates in Urban Ambient Air detection system precision of testing result increased, and is guaranteeing the jamproof while, and measuring accuracy is compared and improved 3%.
Claims (4)
1. a laser intensity is nursed one's health amplifying circuit; It is characterized in that: said amplifying circuit comprises the voltage end (1) of place in circuit; Said voltage end (1) links to each other with an end of pull-up resistor (2); The other end of said pull-up resistor (2) is connected in parallel to diode D1 (3) and diode D2 (4); Said diode D1 (3) and said diode D2 (4) all are connected with resistance R 2 (5); Position between said pull-up resistor (2) and the said diode D1 (3) is connected with inductance L 1 (6); Position between said pull-up resistor (2) and the said diode D2 (4) is connected with inductance L 2 (7), and said inductance L 1 (6) and said inductance L 2 (7) are connected with an end of amplifier (8) jointly, and the other end of said amplifier (8) is in series with capacitor C 4 (9); The other end of said amplifier (8) also is connected with capacitor C 3 (10) and capacitor C 4 (9); Said capacitor C 3 (10) and 4 (9) parallel connections of said capacitor C, the position between said amplifier (8) and the said capacitor C 3 (10) is connected with voltage output end Vout (11), and the position between said amplifier (8) and the said capacitor C 4 (9) is connected with the accurate magnitude of voltage Vref (12) that is used to export signal.
2. according to the said laser intensity conditioning of claim 1 amplifying circuit; It is characterized in that: the position between said inductance L 1 (6) and the said amplifier (8) is connected with filtering circuit, said capacitor C 2 (13) and 5 (14) parallel connections of said resistance R of capacitor C 2 (13) and resistance R 5 (14) compositions.
3. according to claim 1 or 2 said laser intensity conditioning amplifying circuits; It is characterized in that: the position between said inductance L 2 (7) and the said amplifier (8) is connected with filtering circuit, said capacitor C 1 (15) and resistance R 4 (16) parallel connections of capacitor C 1 (15) and resistance R 4 (16) compositions.
4. according to the said laser intensity conditioning of claim 3 amplifying circuit, it is characterized in that: said amplifier (8) also is connected with adjustable resistor R7 (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201526025U CN202511881U (en) | 2012-04-12 | 2012-04-12 | Circuit for conditioning and amplifying light intensity of laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201526025U CN202511881U (en) | 2012-04-12 | 2012-04-12 | Circuit for conditioning and amplifying light intensity of laser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202511881U true CN202511881U (en) | 2012-10-31 |
Family
ID=47064360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201526025U Withdrawn - After Issue CN202511881U (en) | 2012-04-12 | 2012-04-12 | Circuit for conditioning and amplifying light intensity of laser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202511881U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102636255A (en) * | 2012-04-12 | 2012-08-15 | 南通润邦电气工程有限公司 | Laser light intensity dispatching and amplifying circuit |
-
2012
- 2012-04-12 CN CN2012201526025U patent/CN202511881U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102636255A (en) * | 2012-04-12 | 2012-08-15 | 南通润邦电气工程有限公司 | Laser light intensity dispatching and amplifying circuit |
| CN102636255B (en) * | 2012-04-12 | 2013-12-04 | 南通润邦电气工程有限公司 | Laser light intensity dispatching and amplifying circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121031 Effective date of abandoning: 20131204 |
|
| RGAV | Abandon patent right to avoid regrant |