CN201508318U - High-frequency pulse driver of non-contact oil-pollutant on-line detector - Google Patents
High-frequency pulse driver of non-contact oil-pollutant on-line detector Download PDFInfo
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- CN201508318U CN201508318U CN2009202541389U CN200920254138U CN201508318U CN 201508318 U CN201508318 U CN 201508318U CN 2009202541389 U CN2009202541389 U CN 2009202541389U CN 200920254138 U CN200920254138 U CN 200920254138U CN 201508318 U CN201508318 U CN 201508318U
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Abstract
The utility model discloses a high-frequency pulse driver of a non-contact oil-pollutant on-line detector. The high-frequency pulse driver consists of a pulse generation circuit, a pulse width control circuit, a voltage reference circuit, a constant-current circuit and a high-power optical generator, wherein the pulse generation circuit is used for generating pulse signals; the pulse width control circuit is used for converting the pulse signals into control signals; the constant-current circuit is used for leading the high-power optical generator to generate the steady light intensity; the output end of the pulse generation circuit is connected with the input end of the pulse width control circuit; a voltage reference signal output by the voltage reference circuit is connected with the input end of the constant-current circuit; and the outputs of the constant-current circuit and the pulse width control circuit are connected with the high-power optical generator. The driver can drive the high-power optical generator by the pulse of a high-frequency optical generator, and the optical generator is used for providing a stable and reliable high-frequency light source for a non-contact fluorescence on-line detector, therefore, the on-line detector can detect the water quality more accurately and conveniently, so as to reduce the affection of suspended particles in water to measurement to the maximum limit.
Description
Technical field
The utility model relates to the matching used high-frequency impulse driver of a kind of and contactless oil contaminants on-line detector.
Background technology
The method that is used for detecting the water oil content at present has following several, traditional method is to utilize single spectrophotometer method to measure, and measurement result just can obtain the concentration of measured matter through converting again, and this method operating process is loaded down with trivial details, introduce error easily, and can not site work.
The utility model content
For overcoming the defective that prior art exists, the utility model provides that a kind of cost is low, the high-frequency impulse driver of the contactless oil contaminants on-line detector of stable performance.
The utility model order is to realize like this, the high-frequency impulse driver of this contactless oil contaminants on-line detector is by the pulse generating circuit that produces pulse signal, pulse signal is converted to the pulse width control circuit of control signal, voltage reference circuit and be used for high-power optical generator and produce constant-current circuit and the high-power optical generator composition of stablize light intensity, the output terminal of described pulse generating circuit is connected with the input end of pulse width control circuit, the voltage reference signal of voltage reference circuit output is connected to the input end of constant-current circuit, and the output of constant-current circuit and pulse width control circuit is connected with high-power optical generator.
The technical progress that the utility model is obtained: the matching used high-frequency impulse driver of this utility model right and wrong contact fluorescent on-line detecting instrument.This driver comprises the pulse generating circuit that produces pulse signal, pulse signal is converted to the pulse width control circuit of control signal, provides the voltage reference circuit of reference voltage, the constant-current circuit that is used to that high-power optical generator is produced and stablizes light intensity and as the heavy-duty diode of light source for entire circuit, the output of constant-current circuit and pulse width control circuit is connected by triode and high-power optical generator, realizes high-power optical generator control.Promptly the frequency pulse with 1000Hz drives large-power light-emitting diodes, light emitting diode provides a reliable and stable high frequency light source for contactless fluorescent on-line detecting instrument, thereby make on-line detector more convenient, and thoroughly solved because the big deficiency of luminous intensity temperature influence of light emitting diode to water quality detection.Realized that simultaneously on-line detector water sample and sensor in measuring process do not have the sample mode that directly contacts, thereby reduced in the water suspended particle to greatest extent measuring the influence that produces.And on-line detector sample in measuring process need not pre-service such as extraction, separation, can make things convenient for the content of oil in the fast detecting water outlet.
Description of drawings
Fig. 1 is a block scheme of the present utility model.
Fig. 2 is the utility model electrical schematic diagram.
Embodiment
For further describing the utility model, be described further below in conjunction with accompanying drawing.
As shown in Figure 1, this high-frequency impulse driver is by the pulse generating circuit that produces pulse signal, pulse signal is converted to the pulse width control circuit of control signal, voltage reference circuit and be used for high-power optical generator and produce constant-current circuit and the high-power optical generator composition of stablize light intensity, the output terminal of described pulse generating circuit is connected with the input end of pulse width control circuit, the voltage reference signal of voltage reference circuit output is connected to the input end of constant-current circuit, the output of constant-current circuit and pulse width control circuit is connected with high-power optical generator, and high-power optical generator will provide a stable high-frequency pulse signal that can be high for the on-line monitoring instrument.Circuit structure that each part mentioned above is concrete and principle of work division are as follows:
As shown in Figure 2, above-mentioned pulse generating circuit is made up of crystal oscillator XT, capacitor C 1-C4, resistance R 1, R2, diode D1 and single-chip microcomputer U1, crystal oscillator XT and capacitor C 1, C2 constitute crystal oscillating circuit, as single-chip microcomputer U1 oscillation source, its output is connected to single-chip microcomputer U1 input end, the output terminal of single-chip microcomputer U1 produces the pulse signal that is higher than 1000Hz, export the input end of described pulse width control circuit simultaneously to, wherein capacitor C 3, C4 and resistance R 1, R2 and diode D1 are the peripheral cell of single-chip microcomputer U1.
Above-mentioned pulse width control circuit is made up of photoisolator Q2 and triode Q1 and resistance R 8-R10, the input end of described photoisolator Q2 receives the high-frequency signal from pulse generating circuit output, the base stage of the output termination triode Q1 of photoisolator Q2, the collector of triode Q1 links to each other with the negative pole of optical generator, and the emitter of triode Q1 constitutes the optical generator control loop by resistance R 10.Described optical generator present embodiment is a large-power light-emitting diodes D2.
Above-mentioned voltage reference circuit is made up of resistance R 3-R5, capacitor C 5 and diode D3, resistance R 3, R5 are connected in series with potentiometer R4 and constitute bleeder circuit, its bleeder circuit is formed voltage reference circuit with capacitor C 5 backs in parallel, promptly produce a stable voltage signal, this stable voltage signal exports the positive input of operational amplifier U2 in the constant-current circuit to.
Above-mentioned constant-current circuit is made up of operational amplifier U2, resistance R 6, R7 and capacitor C 6-C8, the positive input of operational amplifier U2 links to each other through the voltage signal of resistance R 6 with voltage reference circuit output, the reverse input end of operational amplifier U2 is through resistance R 9, R10 ground connection, the output terminal of operational amplifier U2 forms a feedback circuit, it exports the base stage that meets triode Q1 through resistance R 7, and the steady current output terminal that is produced gets anodal the connection with large-power light-emitting diodes D2.
Its course of work is as follows: crystal oscillator XT provides oscillation source for single-chip microcomputer U1, it is the high-frequency impulse of 1000Hz that the output terminal of single-chip microcomputer U1 produces frequency, high-frequency impulse is added to the input end of photoisolator Q2 as input signal, the output terminal of photoisolator Q2 is connected to the base stage of triode Q1, the collector of triode Q1 links to each other with the negative pole of large-power light-emitting diodes D2, and triode Q1 is linked in the circuit of control large-power light-emitting diodes D2 as controlled high-frequency impulse switch series.Simultaneously; supply voltage produces constant voltage formation voltage reference by the dividing potential drop effect of resistance R 3, R5 and potentiometer R4; voltage signal connects with the positive input terminal of operational amplifier U2 by protection diode D3, resistance R 6; by rectification; the constant current signal that produces is connected with the positive pole of large-power light-emitting diodes D2; can produce constant luminous intensity, this is the feed circuit of large-power light-emitting diodes D2.By the resistance of regulator potentiometer R4, can change the output voltage of voltage reference circuit, change the electric current of supplying with large-power light-emitting diodes D2 through constant-current circuit, thereby change the luminous intensity of large-power light-emitting diodes D2.
Claims (6)
1. the high-frequency impulse driver of a contactless oil contaminants on-line detector, it is characterized in that it is by the pulse generating circuit that produces pulse signal, pulse signal is converted to the pulse width control circuit of control signal, voltage reference circuit and be used for high-power optical generator and produce constant-current circuit and the high-power optical generator composition of stablize light intensity, the output terminal of described pulse generating circuit is connected with the input end of pulse width control circuit, the voltage reference signal of voltage reference circuit output is connected to the input end of constant-current circuit, and the output of constant-current circuit and pulse width control circuit is connected with high-power optical generator.
2. the high-frequency impulse driver of contactless oil contaminants on-line detector according to claim 1, it is characterized in that described pulse generating circuit is made up of crystal oscillator XT, capacitor C 1-C4, resistance R 1, R2, diode D1 and single-chip microcomputer U1, crystal oscillator XT and capacitor C 1, C2 constitute crystal oscillating circuit, its output is connected to single-chip microcomputer U1 input end, capacitor C 3, C4 and resistance R 1, R2 and diode D1 are the peripheral cell of single-chip microcomputer U1, and the output terminal of single-chip microcomputer U1 is exported a high-frequency pulse signal.
3. the high-frequency impulse driver of contactless oil contaminants on-line detector according to claim 1 and 2, it is characterized in that described pulse width control circuit is made up of photoisolator Q2 and triode Q1 and resistance R 8-R10, the input end of described photoisolator Q2 links to each other with the output terminal of pulse generating circuit, the base stage of its output termination triode Q1, the current collection of triode Q1 is the output terminal of pulse width control circuit very.
4. the high-frequency impulse driver of contactless oil contaminants on-line detector according to claim 3, it is characterized in that described voltage reference circuit is made up of resistance R 3-R5, capacitor C 5 and diode D3, resistance R 3, R5 are connected in series with potentiometer R4 and constitute bleeder circuit, and its bleeder circuit is formed voltage reference circuit with capacitor C 5 backs in parallel.
5. the high-frequency impulse driver of contactless oil contaminants on-line detector according to claim 1, it is characterized in that described constant-current circuit is made up of operational amplifier U2, resistance R 6, R7 and capacitor C 6-C8, the positive input of operational amplifier U2 links to each other with the output terminal of voltage reference circuit through resistance R 6, and the output terminal of operational amplifier U2 is the output terminal of constant-current circuit through resistance R 7.
6. the high-frequency impulse driver of contactless oil contaminants on-line detector according to claim 1 is characterized in that described high-power optical generator is a large-power light-emitting diodes D2, and it is connected to the output terminal of pulse width control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202541389U CN201508318U (en) | 2009-10-23 | 2009-10-23 | High-frequency pulse driver of non-contact oil-pollutant on-line detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202541389U CN201508318U (en) | 2009-10-23 | 2009-10-23 | High-frequency pulse driver of non-contact oil-pollutant on-line detector |
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| Publication Number | Publication Date |
|---|---|
| CN201508318U true CN201508318U (en) | 2010-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202541389U Expired - Fee Related CN201508318U (en) | 2009-10-23 | 2009-10-23 | High-frequency pulse driver of non-contact oil-pollutant on-line detector |
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| CN (1) | CN201508318U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109211900A (en) * | 2017-06-29 | 2019-01-15 | 宁夏软件工程院有限公司 | A kind of electrolyte polyion ingredient on-line measurement device based on Internet of Things |
-
2009
- 2009-10-23 CN CN2009202541389U patent/CN201508318U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109211900A (en) * | 2017-06-29 | 2019-01-15 | 宁夏软件工程院有限公司 | A kind of electrolyte polyion ingredient on-line measurement device based on Internet of Things |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100616 Termination date: 20121023 |