CN206993066U - A kind of electric charge release circuit and ultraviolet light detection module for ultraviolet phototube - Google Patents
A kind of electric charge release circuit and ultraviolet light detection module for ultraviolet phototube Download PDFInfo
- Publication number
- CN206993066U CN206993066U CN201720772074.6U CN201720772074U CN206993066U CN 206993066 U CN206993066 U CN 206993066U CN 201720772074 U CN201720772074 U CN 201720772074U CN 206993066 U CN206993066 U CN 206993066U
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- Prior art keywords
- electric charge
- ultraviolet
- resistance
- circuit
- phototube
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Abstract
The utility model discloses a kind of electric charge release circuit and ultraviolet light detection module for ultraviolet phototube, the electric charge release circuit includes sampling resistor, amplifying circuit, decision unit and on-off circuit.Pass through the equivalent voltage on sampling resistor of the quantity of electric charge for accumulating ultraviolet phototube, amplified circuit is amplified to the voltage on sampling resistor and obtains sampled signal, decision unit is according to the sampled signal, judge whether the electric charge of ultraviolet phototube accumulation reaches given threshold, reach the given threshold and then export enable signal to on-off circuit, on-off circuit is connected the negative electrode and anode of the ultraviolet phototube, and produce discharge current, so as to discharge the electric charge accumulated on the ultraviolet light photo tube cathode.Therefore, the utility model can ultraviolet phototube charge accumulated to a certain extent when, the electric charge that accumulates on ultraviolet phototube is discharged, so as to avoid the charge accumulated phenomenon due to ultraviolet phototube.
Description
Technical field
Ultraviolet technical field of light detection is the utility model is related to, more particularly to a kind of electric charge for ultraviolet phototube discharges
Circuit and ultraviolet light detection module.
Background technology
There is the accumulation phenomenon of electric charge in ultraviolet phototube, and the quantity of electric charge of the accumulation accumulates in the case of high voltage supply
After to a certain extent, will increase ultraviolet phototube background noise triggering probability, simultaneously as background noise triggering there is
Uncertainty, easily ultraviolet testing result is impacted.Therefore, it is necessary to which a kind of technical scheme, can effectively be eliminated ultraviolet
The charge accumulated phenomenon of photoelectric tube, so as to reduce the probability of ultraviolet phototube background noise triggering, ensure ultraviolet testing result
Accuracy.
Utility model content
The purpose of this utility model is：Solve the charge accumulated phenomenon that ultraviolet phototube occurs in high voltage supply, meeting
Increase the probability of ultraviolet phototube background noise triggering, make the triggering of ultraviolet phototube background noise be easier to influence ultraviolet detection knot
The technical problem of fruit.
In order to realize above-mentioned purpose of utility model, the utility model provides following technical scheme：
A kind of electric charge release circuit for ultraviolet phototube, it includes,
The cathode terminal of sampling resistor, its one end ground connection, one end and ultraviolet phototube connects；
Amplifying circuit, for being amplified to the voltage on the sampling resistor, and obtain sampled signal；
Decision unit, for according to the sampled signal, whether the quantity of electric charge for judging to accumulate on ultraviolet light photo tube cathode to reach
To given threshold, if reaching the given threshold, enable signal is exported；
On-off circuit, under the triggering of enable signal control, connecting the negative electrode and anode of ultraviolet phototube, and
Discharge current is produced, to discharge the electric charge accumulated on the ultraviolet light photo tube cathode.
According to a kind of specific embodiment, the utility model is used in the electric charge release circuit of ultraviolet phototube, described
Decision unit is micro-control module, and the micro-control module to the sampled signal by carrying out A/D conversions to obtain hits
According to, and judge whether the sampled data reaches the given threshold, and when the sampled data reaches the given threshold,
Export the enable signal.
According to a kind of specific embodiment, the utility model is used in the electric charge release circuit of ultraviolet phototube, described
Amplifying circuit includes operational amplifier U1, resistance R1 and resistance R2；Wherein, an input termination of the operational amplifier U1
Ground, its another input connect resistance R1 and resistance R2 one end respectively, and the resistance R2 other end is with operational amplifier U1's
Output end connects, and the resistance R1 other end connects the sampling resistor, the operational amplifier U1 output end output sampling letter
Number.
According to a kind of specific embodiment, the utility model is used in the electric charge release circuit of ultraviolet phototube, described
On-off circuit includes triode Q1, resistance R3 and resistance R4；Wherein, input of the resistance R3 one end as enable signal, its
Another is connected with triode Q1 base stage, and resistance R4 one end is connected with voltage source VCC, the source of its other end and triode Q1
Pole is connected, and one end that triode Q1 emitter stage is grounded with the sampling resistor is connected.
The utility model additionally provides a kind of ultraviolet light detection module, and the ultraviolet light detection module is used including the utility model
In the electric charge release circuit of ultraviolet phototube.
Compared with prior art, the beneficial effects of the utility model：The electric charge that the utility model is used for ultraviolet phototube is released
Discharge in road, by the equivalent voltage on sampling resistor of the quantity of electric charge for accumulating ultraviolet phototube, amplified circuit is to sampling
Ohmically voltage is amplified and obtains sampled signal, and decision unit judges that ultraviolet phototube accumulates according to the sampled signal
Electric charge whether reach given threshold, reach the given threshold and then export enable signal to on-off circuit, connect on-off circuit
The negative electrode and anode of the ultraviolet phototube, and discharge current is produced, so as to discharge the electric charge accumulated on the ultraviolet light photo tube cathode.
Therefore, the utility model can ultraviolet phototube charge accumulated to a certain extent when, discharge and accumulated on ultraviolet phototube
Electric charge, so as to avoid the charge accumulated phenomenon due to ultraviolet phototube, the probability of increase ultraviolet phototube background noise triggering, make
The situation that the triggering of ultraviolet phototube background noise is easier to influence ultraviolet testing result occurs.
Brief description of the drawings：
Fig. 1 is the structural representation for the electric charge release circuit that the utility model is used for ultraviolet phototube；
Fig. 2 is a kind of structural representation of embodiment of the present utility model；
Embodiment
The utility model is described in further detail with reference to test example and embodiment.But should not be by this
The scope for being interpreted as the above-mentioned theme of the utility model is only limitted to following embodiment, all to be realized based on the utility model content
Technology belongs to the scope of the utility model.
The utility model with reference to shown in Fig. 1 is used for the structural representation of the electric charge release circuit of ultraviolet phototube；Wherein,
The utility model is used for the electric charge release circuit of ultraviolet phototube, and it includes sampling resistor, amplifying circuit, decision unit and switch
Circuit.
Wherein, the cathode terminal of one end ground connection of sampling resistor, its other end and ultraviolet phototube connects.Once ultraviolet light photo
After producing charge accumulated on the negative electrode of pipe, electrical potential difference will be formed between sampling resistor, that is, forms voltage.And amplifying circuit passes through
Voltage on sampling resistor is amplified, and obtains sampled signal, the sampled signal that amplifying circuit is obtained is exported to sentencing
Certainly unit.For decision unit according to the sampled signal, whether the quantity of electric charge for judging to accumulate on ultraviolet light photo tube cathode reaches setting threshold
Value, if reaching the given threshold, exports enable signal to on-off circuit.On-off circuit controls in the triggering of enable signal
Under, the cathode terminal and anode tap of ultraviolet phototube are connected, the negative electrode and anode for making ultraviolet phototube produce discharge current, so as to release
Put the electric charge accumulated on ultraviolet light photo tube cathode.
A kind of structural representation of embodiment of the present utility model with reference to shown in Fig. 2；Wherein, decision unit is microcontroller
Module.Also, then micro-control module judges the sampling by carrying out A/D conversions to the sampled signal to obtain sampled data
Whether data reach given threshold, once the sampled data reaches given threshold, micro-control module then exports an enable signal
To on-off circuit, the on-off circuit is set to connect the cathode terminal and anode tap of ultraviolet phototube, so that the negative electrode of ultraviolet phototube
Discharge current is produced between anode, discharges the electric charge accumulated on ultraviolet light photo tube cathode.
Wherein, amplifying circuit includes operational amplifier U1, resistance R1 and resistance R2.Wherein, one of operational amplifier U1
Input end grounding, its another input connect resistance R1 and resistance R2 one end respectively, and resistance the R2 other end and computing are put
Big device U1 output end connection, the resistance R1 other end connect the sampling resistor, operational amplifier U1 output end output institute
State sampled signal.
On-off circuit includes triode Q1, resistance R3 and resistance R4；Wherein, resistance R3 one end is as the defeated of enable signal
Enter end, its another be connected with triode Q1 base stage, resistance R4 one end is connected with voltage source VCC, its other end and three poles
Pipe Q1 source electrode connection, one end that triode Q1 emitter stage is grounded with the sampling resistor is connected.
When micro-control module exports the base stage that enable signal reaches by resistance R2 triode Q1, make triode Q1 base
Pole produces high level, so as to turn-on transistor Q1.After triode Q1 conductings, the cathode terminal and anode tap of ultraviolet phototube are connected,
Make to produce discharge current between the negative electrode of ultraviolet phototube and anode, and the discharge current flows into earth terminal through triode Q1.
The utility model additionally provides a kind of ultraviolet light detection module, and the ultraviolet light detection module is used including the utility model
In the electric charge release circuit of ultraviolet phototube.
Claims (5)
- A kind of 1. electric charge release circuit for ultraviolet phototube, it is characterised in that including,The cathode terminal of sampling resistor, its one end ground connection, one end and ultraviolet phototube connects；Amplifying circuit, for being amplified to the voltage on the sampling resistor, and obtain sampled signal；Decision unit, for according to the sampled signal, whether the quantity of electric charge for judging to accumulate on ultraviolet light photo tube cathode, which reaches, to set Determine threshold value, if reaching the given threshold, export enable signal；On-off circuit, under the triggering of enable signal control, connecting the negative electrode and anode of ultraviolet phototube, generation is put Electric current, discharge the electric charge accumulated on the ultraviolet light photo tube cathode.
- 2. it is used for the electric charge release circuit of ultraviolet phototube as claimed in claim 1, it is characterised in that the decision unit is Micro-control module, wherein, the micro-control module obtains sampled data by carrying out A/D conversions to the sampled signal, and Judge whether the sampled data reaches the given threshold, and when the sampled data reaches the given threshold, output The enable signal.
- 3. it is used for the electric charge release circuit of ultraviolet phototube as claimed in claim 1, it is characterised in that the amplifying circuit bag Include operational amplifier U1, resistance R1 and resistance R2；Wherein, an input end grounding of the operational amplifier U1, its another Input connects resistance R1 and resistance R2 one end respectively, and the resistance R2 other end is connected with operational amplifier U1 output end, The resistance R1 other end connects the sampling resistor, and operational amplifier U1 output end exports the sampled signal.
- 4. it is used for the electric charge release circuit of ultraviolet phototube as claimed in claim 1, it is characterised in that the on-off circuit bag Include triode Q1, resistance R3 and resistance R4；Wherein, input of the resistance R3 one end as enable signal, its another with three Pole pipe Q1 base stage connection, resistance R4 one end are connected with voltage source VCC, and its other end is connected with triode Q1 source electrode, and three One end that pole pipe Q1 emitter stage is grounded with the sampling resistor is connected.
- 5. a kind of ultraviolet light detection module, it is characterised in that including being used for ultraviolet light photo as described in one of Claims 1 to 4 The electric charge release circuit of pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720772074.6U CN206993066U (en) | 2017-06-29 | 2017-06-29 | A kind of electric charge release circuit and ultraviolet light detection module for ultraviolet phototube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720772074.6U CN206993066U (en) | 2017-06-29 | 2017-06-29 | A kind of electric charge release circuit and ultraviolet light detection module for ultraviolet phototube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206993066U true CN206993066U (en) | 2018-02-09 |
Family
ID=61400345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720772074.6U Withdrawn - After Issue CN206993066U (en) | 2017-06-29 | 2017-06-29 | A kind of electric charge release circuit and ultraviolet light detection module for ultraviolet phototube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206993066U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107342744A (en) * | 2017-06-29 | 2017-11-10 | 成都旭光光电技术有限责任公司 | A kind of electric charge release circuit and ultraviolet light detection module for ultraviolet phototube |
-
2017
- 2017-06-29 CN CN201720772074.6U patent/CN206993066U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107342744A (en) * | 2017-06-29 | 2017-11-10 | 成都旭光光电技术有限责任公司 | A kind of electric charge release circuit and ultraviolet light detection module for ultraviolet phototube |
| CN107342744B (en) * | 2017-06-29 | 2023-08-15 | 成都紫外光电技术有限公司 | Charge release circuit for ultraviolet phototube and ultraviolet light detection module |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210331 Address after: No.2-13, Shiyang Road, Yangma Town, Jianyang City, Chengdu, Sichuan 610000 Patentee after: Chengdu ultraviolet photoelectric technology Co.,Ltd. Address before: No. 333, Xingong Avenue, East Industrial District, Xindu, Chengdu, Sichuan 610500 Patentee before: CHENGDU XUGUANG ELECTRONIC EQUIPMENTS Co.,Ltd. |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180209 Effective date of abandoning: 20230815 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20180209 Effective date of abandoning: 20230815 |