CN207340034U - A kind of front-end driven circuit of hand-held induced breakdown spectrograph - Google Patents
A kind of front-end driven circuit of hand-held induced breakdown spectrograph Download PDFInfo
- Publication number
- CN207340034U CN207340034U CN201721384515.1U CN201721384515U CN207340034U CN 207340034 U CN207340034 U CN 207340034U CN 201721384515 U CN201721384515 U CN 201721384515U CN 207340034 U CN207340034 U CN 207340034U
- Authority
- CN
- China
- Prior art keywords
- signal
- voltage source
- accurate voltage
- linear ccd
- level conversion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000015556 catabolic process Effects 0.000 title claims abstract description 17
- 238000006243 chemical reaction Methods 0.000 claims abstract description 41
- 230000003595 spectral effect Effects 0.000 claims abstract description 25
- 230000003750 conditioning effect Effects 0.000 claims abstract description 6
- 238000001228 spectrum Methods 0.000 claims description 6
- 238000003384 imaging method Methods 0.000 claims description 3
- 230000009467 reduction Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001782 photodegradation Methods 0.000 description 1
- 238000004451 qualitative analysis Methods 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
A kind of front-end driven circuit of hand-held induced breakdown spectrograph is the utility model is related to, including：Linear ccd image sensor, for linear CCD signal acquisition；Signal condition unit, signal condition is carried out by the spectral signal of collection；High speed serialization ADC converting units, digital signal output is converted into by the spectral signal after conditioning；Spectral signal level conversion unit, the signal that ADC converting units are exported carry out level conversion；Logic control signal level conversion unit, for being transmitted to linear ccd image sensor after the logic control signal level conversion that exports host computer；The accurate voltage source circuits of 7.5/4V, the accurate voltage source circuits of 7.5/2.5V, the accurate voltage source circuits of 7.5/5V.The utility model employs accurate voltage source circuit, ensure that the high accuracy of linear ccd image sensor signal acquisition, and accurately reference voltage is provided for signal conditioning circuit, and noise reduction is obvious, reduces the degree that signal is disturbed；High speed serialization ADC converting units have been used, have improved the precision and efficiency of data conversion.
Description
Technical field
Spectrometer technical field is the utility model is related to, more particularly to a kind of front end of hand-held induced breakdown spectrograph is driven
Dynamic circuit.
Background technology
Spectrometer is by the scientific instrument that the photodegradation of complicated component is spectrum line, is made of prism or diffraction grating etc.,
Using the light of the measurable body surface reflection of spectrometer, principle is：When light action is in test substance, reflection can be caused, inhaled
Phenomena such as receiving and scattering, so as to produce the change of incident optical signal, the change of incident optical signal directly reflects compound atom
Or uptake, volume reflection or the scattered quantum of molecular electromagnetic emission, spectral technique are exactly to measure its change, light absorbs, reflection are obtained
Or the spectrogram of scattering, so as to carry out qualitative or quantitative analysis, obtain relevant information.
Light resolves into spectrogram by spectrometer and develops in photographic negative, or displays on a display screen, in order to
Spectrogram is analyzed, spectral technique is widely used in the neck such as air pollution, water pollution, food hygiene, metal industry
In the detection in domain.
Utility model content
Technical problem to be solved in the utility model is to provide that a kind of spectroscopic data conversion speed is fast and signal acquisition is smart
Spend the front-end driven circuit of high hand-held induced breakdown spectrograph.
In order to solve the above technical problems, the technical solution of the utility model is：A kind of hand-held induced breakdown spectrograph
Front-end driven circuit, including：
Linear ccd image sensor, for linear CCD signal acquisition and output spectrum signal；
Signal condition unit, is electrically connected with the spectral signal output terminal of the linear ccd image sensor, by the spectrum
Signal carries out signal condition；
High speed serialization ADC converting units, are electrically connected with the signal condition unit, and the spectral signal after conditioning is converted into
Digital signal exports；
Spectral signal level conversion unit, is electrically connected, the signal that ADC converting units are exported with the ADC converting units
Host computer is transmitted to after carrying out level conversion；
Logic control signal level conversion unit, its input terminal and upper mechatronics, output terminal are electrically connected to the line
Property ccd image sensor, be transmitted to the linear CCD after carrying out level conversion for the logic control signal that exports host computer
Imaging sensor, controls the linear ccd image sensor；
Accurate voltage source circuit, including be the linear ccd image sensor and logic control signal level conversion unit
The accurate voltage source circuits of 7.5/4V of working power are provided, are carried for the ADC converting units and spectral signal level conversion unit
For the accurate voltage source circuits of 7.5/2.5V of working power, and provide for the signal condition unit 7.5/5V of reference voltage
Accurate voltage source circuit.
As preferable technical solution, the linear ccd image sensor is TCD1304.
As preferable technical solution, the signal condition unit includes the first amplifier and the second amplifier, the linear CCD
The spectral signal output terminal of imaging sensor is electrically connected to the noninverting input of first amplifier, the output of first amplifier
End is shorted to inverting input, and the output terminal of first amplifier is electrically connected with the inverting input of the second amplifier, and described 7.5/
The output terminal of the accurate voltage source circuits of 5V is respectively electrically connected to first amplifier and the power end of the second amplifier and the second fortune
The noninverting input put.
As preferable technical solution, the signal condition unit includes double operational chip ADA4896-2.
As preferable technical solution, the high speed serialization ADC converting units include modulus conversion chip AD7983.
As preferable technical solution, the spectral signal level conversion unit includes electrical level transferring chip
sn74avc4t774。
As preferable technical solution, the logic control signal level conversion unit includes electrical level transferring chip
TXB0104。
As preferable technical solution, the accurate voltage source circuits of 7.5/4V include accurate voltage source chip ADR434.
As preferable technical solution, the accurate voltage source circuits of 7.5/2.5V include accurate voltage source chip
ADR431B。
As preferable technical solution, the accurate voltage source circuits of 7.5/5V include accurate voltage source chip ADR435.
By adopting the above-described technical solution, the beneficial effects of the utility model are：The utility model employs accurate electricity
Source circuit, is respectively that each circuit unit provides accurately operating voltage, ensure that linear ccd image sensor signal is adopted
The high accuracy of collection；Accurately reference voltage is provided for signal conditioning circuit, noise reduction is obvious, reduces what signal was disturbed
Degree；High speed serialization ADC converting units have been used, compared with traditional Parallel ADC modular converter, have improved the essence of data conversion
Degree and efficiency.
Brief description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property
Put, other attached drawings can also be obtained according to these attached drawings.
Fig. 1 is the functional block diagram of the utility model embodiment；
Fig. 2 is linear ccd image sensor and the circuit diagram of signal condition unit in the utility model embodiment；
Fig. 3 is the electricity of the utility model embodiment high speed serial ADC converting unit and spectral signal level conversion unit
Road schematic diagram；
Fig. 4 is the circuit diagram of logic control signal level conversion unit.
Embodiment
It is common shown as shown in Figure 1 to Figure 4, a kind of front-end driven circuit of hand-held induced breakdown spectrograph, including：Linearly
Ccd image sensor TCD1304, signal condition unit, high speed serialization ADC converting units, spectral signal level conversion unit, is patrolled
Collect control signal level conversion unit, accurate voltage source circuit.
Accurate voltage source circuit includes providing work for linear ccd image sensor and logic control signal level conversion unit
Make the accurate voltage source circuits of 7.5/4V of power supply, working power is provided for ADC converting units and spectral signal level conversion unit
The accurate voltage source circuits of 7.5/2.5V, and provide for signal condition unit the 7.5/5V accurate voltage sources electricity of reference voltage
The accurate voltage source circuit in road, wherein 7.5/4V, as power supply chip, 7.5V voltages is turned using accurate voltage source chip ADR434
It is changed to 4V.
7.5/2.5V accurate voltage source circuit uses accurate voltage source chip ADR431B as power supply chip, by 7.5V electricity
Pressure is converted to 2.5V.
The accurate voltage source circuits of 7.5/5V, as power supply chip, 7.5V voltages are turned using accurate voltage source chip ADR435
It is changed to 2.5V.
Linear ccd image sensor TCD1304, for linear CCD signal acquisition and output spectrum signal.
Signal condition unit and spectral signal output terminal OS, that is, pin 21 of linear ccd image sensor TCD1304 are electrically connected
Connect, spectral signal is subjected to signal condition.
Signal condition unit carries out signal condition, including the first amplifier IC1 and second using double operational chip ADA4896-2
Amplifier IC2, spectral signal output terminal OS, that is, pin 21 of linear ccd image sensor are electrically connected to the in the same direction of the first amplifier IC1
The pin 3 of input terminal, that is, ADA4896-2, the output pin 1 of the first amplifier are shorted to inverting input i.e. pin 2, the first fortune
The output pin 1 for putting IC1 is electrically connected with the inverting input pin 6 of the second amplifier IC2, the accurate voltage source circuits of 7.5/5V
Output terminal is respectively electrically connected to the same of the i.e. 8 and second amplifier IC2 of pin of power end of the first amplifier IC1 and the second amplifier IC2
To input terminal, that is, pin 5.
High speed serialization ADC converting units carry out analog-to-digital conversion using modulus conversion chip AD7983, and the second amplifier IC2's is defeated
Outlet pin 7 is electrically connected to the pin 3 of modulus conversion chip AD7983, and modulus conversion chip AD7983 believes the spectrum after conditioning
Number CCD is converted into digital signal and passes through pin 6,7,8 exporting.
Spectral signal level conversion unit uses electrical level transferring chip sn74avc4t774, electrical level transferring chip
The pin 12,11,10 of sn74avc4t774 is electrically connected with the pin 6,7,8 of ADC converting units, that is, modulus conversion chip AD7983,
Signal that ADC converting units export is carried out to be transmitted to host computer by pin 1,2,3 after level conversion.
Logic control signal level conversion unit, after the logic control signal for host computer to be exported carries out level conversion
Linear ccd image sensor is transmitted to, to control linear ccd image sensor to work；Logic control signal level conversion unit
Using electrical level transferring chip TXB0104, its input terminal pin A1, A2, A3 and upper mechatronics, output pin B1, B2, B3
It is electrically connected to the pin 3,4,5 of linear ccd image sensor TCD1304.
The advantages of basic principle, main feature and the utility model of the utility model has been shown and described above.One's own profession
The technical staff of industry is it should be appreciated that the present utility model is not limited to the above embodiments, described in above embodiments and description
Simply illustrate the utility model principle, on the premise of not departing from the spirit and scope of the utility model, the utility model is also
Various changes and modifications are had, these various changes and improvements fall within the scope of the claimed invention.The utility model
Claimed scope is defined by the appending claims and its equivalent thereof.
Claims (10)
- A kind of 1. front-end driven circuit of hand-held induced breakdown spectrograph, it is characterised in that including：Linear ccd image sensor, for linear CCD signal acquisition and output spectrum signal；Signal condition unit, is electrically connected with the spectral signal output terminal of the linear ccd image sensor, by the spectral signal Carry out signal condition；High speed serialization ADC converting units, are electrically connected with the signal condition unit, and the spectral signal after conditioning is converted into numeral Signal output；Spectral signal level conversion unit, is electrically connected with the ADC converting units, and the signal that ADC converting units are exported carries out Host computer is transmitted to after level conversion；Logic control signal level conversion unit, its input terminal and upper mechatronics, output terminal are electrically connected to the linear CCD Imaging sensor, the logic control signal for host computer to be exported are transmitted to the linear ccd image after carrying out level conversion Sensor, controls the linear ccd image sensor；Accurate voltage source circuit, including provided for the linear ccd image sensor and logic control signal level conversion unit The accurate voltage source circuits of 7.5/4V of working power, work is provided for the ADC converting units and spectral signal level conversion unit Make the accurate voltage source circuits of 7.5/2.5V of power supply, and provide for the signal condition unit reference voltage 7.5/5V it is accurate Voltage source circuit.
- A kind of 2. front-end driven circuit of hand-held induced breakdown spectrograph as claimed in claim 1, it is characterised in that：It is described Linear ccd image sensor is TCD1304.
- A kind of 3. front-end driven circuit of hand-held induced breakdown spectrograph as claimed in claim 1, it is characterised in that：It is described Signal condition unit includes the first amplifier and the second amplifier, and the spectral signal output terminal of the linear ccd image sensor is electrically connected The noninverting input of first amplifier is connected to, the output terminal of first amplifier is shorted to inverting input, first fortune The output terminal put is electrically connected with the inverting input of the second amplifier, and the output terminal of the accurate voltage source circuits of 7.5/5V is electric respectively It is connected to the power end of first amplifier and the second amplifier and the noninverting input of the second amplifier.
- A kind of 4. front-end driven circuit of hand-held induced breakdown spectrograph as described in claim 1 or 3, it is characterised in that： The signal condition unit includes double operational chip ADA4896-2.
- A kind of 5. front-end driven circuit of hand-held induced breakdown spectrograph as claimed in claim 1, it is characterised in that：It is described High speed serialization ADC converting units include modulus conversion chip AD7983.
- A kind of 6. front-end driven circuit of hand-held induced breakdown spectrograph as claimed in claim 1, it is characterised in that：It is described Spectral signal level conversion unit includes electrical level transferring chip sn74avc4t774.
- A kind of 7. front-end driven circuit of hand-held induced breakdown spectrograph as claimed in claim 1, it is characterised in that：It is described Logic control signal level conversion unit includes electrical level transferring chip TXB0104.
- A kind of 8. front-end driven circuit of hand-held induced breakdown spectrograph as claimed in claim 1, it is characterised in that：It is described The accurate voltage source circuits of 7.5/4V include accurate voltage source chip ADR434.
- A kind of 9. front-end driven circuit of hand-held induced breakdown spectrograph as claimed in claim 1, it is characterised in that：It is described 7.5/2.5V accurate voltage source circuit includes accurate voltage source chip ADR431B.
- A kind of 10. front-end driven circuit of hand-held induced breakdown spectrograph as claimed in claim 1, it is characterised in that：Institute Stating the accurate voltage source circuits of 7.5/5V includes accurate voltage source chip ADR435.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721384515.1U CN207340034U (en) | 2017-10-25 | 2017-10-25 | A kind of front-end driven circuit of hand-held induced breakdown spectrograph |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721384515.1U CN207340034U (en) | 2017-10-25 | 2017-10-25 | A kind of front-end driven circuit of hand-held induced breakdown spectrograph |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207340034U true CN207340034U (en) | 2018-05-08 |
Family
ID=62362976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721384515.1U Active CN207340034U (en) | 2017-10-25 | 2017-10-25 | A kind of front-end driven circuit of hand-held induced breakdown spectrograph |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207340034U (en) |
-
2017
- 2017-10-25 CN CN201721384515.1U patent/CN207340034U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103645170B (en) | A kind of device utilizing Raman spectrum to detect tumour character | |
| CN106052871A (en) | Fast multi-channel spectrometer for LED full spectrum detection | |
| CN103399006A (en) | Color RGB (red, green and blue)-component-based urine analysis device and processing method thereof | |
| CN102980658A (en) | Micro optical fiber spectrograph | |
| CN105842537A (en) | Method and circuit for measuring phase difference based on integrated phase frequency discriminator | |
| CN207340034U (en) | A kind of front-end driven circuit of hand-held induced breakdown spectrograph | |
| CN110220907A (en) | A kind of detection system of the portable gold mark detector based on silicon photocell | |
| CN204462021U (en) | Fluorescence analyser | |
| CN201683892U (en) | Multi-element ear-point information data acquisition system | |
| CN203572772U (en) | Cloud traditional Chinese medicine quality detection system based on multi-wavelength LED fluorescence spectrum | |
| CN203364965U (en) | Light signal detection device based on equal precision frequency measurement | |
| CN107831358A (en) | A kind of current measurement device based on MAX4373HEUA | |
| CN101556244B (en) | Measurement method for chlorophyll content in cucumber leaves based on RGB chlorophyll meter | |
| CN213780205U (en) | Micro-current measuring device | |
| CN103462614B (en) | Noninvasive in vivo blood alcohol concentration detecting instrument based on multi-wavelength light beam and processing method | |
| CN207366633U (en) | plasma probe measurement and control system | |
| CN204133475U (en) | Jaundice tester | |
| CN103364083A (en) | Equal precision frequency measuring-based optical signal detection device and method | |
| CN203673058U (en) | Electric energy meter field inspecting apparatus | |
| CN101785678A (en) | Electronic grip tester | |
| Hu et al. | Low cost spectrometer accessory for cell phone based optical sensor | |
| CN201229297Y (en) | Intelligent color comparator for textiles | |
| CN205719959U (en) | Real silk based on near-infrared spectrum technique is traced to the source instrument | |
| CN204228596U (en) | Band automatic cleaning function nephelometer | |
| CN204008387U (en) | A kind of laser dust particle counter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |