CN203858375U - Position sensitive detector integration experimental instrument - Google Patents
Position sensitive detector integration experimental instrument Download PDFInfo
- Publication number
- CN203858375U CN203858375U CN201420272793.8U CN201420272793U CN203858375U CN 203858375 U CN203858375 U CN 203858375U CN 201420272793 U CN201420272793 U CN 201420272793U CN 203858375 U CN203858375 U CN 203858375U
- Authority
- CN
- China
- Prior art keywords
- sensitive detector
- signal processing
- signal
- module
- processing circuit
- 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.)
- Expired - Fee Related
Links
Landscapes
- Length Measuring Devices By Optical Means (AREA)
Abstract
The utility model discloses a position sensitive detector integration experimental instrument. The instrument comprises a detector adjusting mechanism, a signal processing circuit and an LCD display. The detector adjusting mechanism comprises an installation base. One end of the installation base is provided with a manual translation platform where an extension rod is disposed. A laser is fixed to the extension rod. The other end of the installation base is fixed with a position sensitive detector. A laser signal generated by the laser irradiates the position sensitive detector. The two signal lines of the position sensitive detector are connected to the signal processing circuit through signal wire interfaces. The instrument enables simple, visual, rapid and accurate positioning and tracking of a goal, guides students to be familiar with experiment principles, and exercises operational ability of students.
Description
Technical field
The utility model relates to experiment device for teaching technical field, relates in particular to a kind of Position-Sensitive Detector comprehensive test instrument.
Background technology
Position-Sensitive Detector (Position Sensitive Detector, PSD) is a kind of to inciding the photoelectric device of the energy central position sensitivity of hot spot on photosurface.With respect to the photoelectric sensor of other types, the major advantage of PSD is that it is the continuity device of non-blind area, and existence just can be made the possibility of large area system without extra device.Position-Sensitive Detector is widely used in the commercial and industrial of demand low cost or high speed position detection, the occasions such as photoelectric tracking such as contactless range observation, laser beam collimation and object, also be applied to precision optics collimation aspect, such as biologic medical application, robot, process control and location information system etc.But, the current Position-Sensitive Detector experiment teaching instrument for science and engineering specialties such as institution of higher learning's applied physics, optoelectronic information scientific and engineering, Electronics Science and Technology, Surveying Engineering, Mechatronic Engineering, Technology and Equipment of Observing and Controlling, mostly function is simple, expensive, is unfavorable for the raising of student to the understanding of photoelectric directional and practical application thereof and teachers ' teaching quality.
Utility model content
The technical problems to be solved in the utility model is for defects such as existing Position-Sensitive Detector experimental teaching instrument function in prior art are simple, expensive, a kind of Position-Sensitive Detector comprehensive test instrument for student experimenting is provided, this experimental provision and practical application are combined closely, diverse in function, simple to operate and to realize cost low.
The utility model solves the technical scheme that its technical matters adopts:
A kind of Position-Sensitive Detector comprehensive test instrument is provided, comprises detector governor motion, signal processing circuit and LCD display;
Wherein, detector governor motion comprises mount pad, and one end of mount pad is provided with manual translation platform, and manual translation platform is provided with extension bar, is fixed with laser instrument on extension bar, regulates the position of laser instrument on extension bar by manual translation platform;
The other end of mount pad is fixed with Position-Sensitive Detector, and laser instrument produces laser signal and is irradiated on Position-Sensitive Detector, and the two paths of signals line of Position-Sensitive Detector is connected with signal processing circuit by signal wire interface;
Signal processing circuit comprises power management module, signal processing module and data acquisition module, and power management module is connected with laser instrument, for it provides operating voltage; Signal processing module comprises operational amplifier, adder and substracter circuit and Circuit tuning, the two-way electric current of operational amplifier location sensitive detector output amplifies and I/V conversion, voltage signal after conversion carries out addition, subtraction operation by adder and substracter circuit, Circuit tuning carries out level lifting and phase place adjustment to the output signal of adder and substracter circuit, finally the signal after adjusting is sent into data acquisition module and carry out analog to digital conversion, and send to microprocessor;
Microprocessor is connected with LCD display, and microprocessor is provided with serial communication and program burn writing module, by this serial communication and program burn writing module, carries out program burn writing.
In Position-Sensitive Detector comprehensive test instrument described in the utility model, this signal processing circuit also comprises signal processing circuit test section.
In Position-Sensitive Detector comprehensive test instrument described in the utility model, this signal processing circuit also comprises regarded as output controlling module, and this regarded as output controlling module is provided with for user and builds the reserved individual devices of signal processing circuit and the interface corresponding with each individual devices.
In Position-Sensitive Detector comprehensive test instrument described in the utility model, this comprehensive test apparatus also comprises host computer, and microprocessor is provided with usb communication interface module, and this host computer is connected with microprocessor by usb communication interface module.
In Position-Sensitive Detector comprehensive test instrument described in the utility model, this comprehensive test apparatus also comprises voltage table and reometer.
In Position-Sensitive Detector comprehensive test instrument described in the utility model, operational amplifier is used LF353 to carry out signal amplification, and the feedback resistance in this operational amplifier is sliding resistance.
The beneficial effect that the utility model produces is: the utility model adopts Position-Sensitive Detector to produce the two-way electric signal corresponding with light signal, signal processing circuit by One Dimensional Position Sensitive Detectors is processed two path signal, can obtain light spot energy center.Photoelectric directional mode of the present utility model realizes intuitively, locates fast tracking target orientation.The data that gather can be used microprocessor to process and use LCD to carry out position display, also can use computing machine to carry out data processing and position display.Can realize and locate simply, intuitively, fast and accurately tracking target, combine closely with practical application, diverse in function, enlightening strong, simple to operate, to realize cost low, can be familiar with experimental principle by guiding student, the manipulative ability of exercise student ', inspire Students ' Innovation Spirit, can make teacher that book knowledge is combined with practice, improve teaching quality.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is the structured flowchart of the utility model embodiment Position-Sensitive Detector experiment instrument;
Fig. 2 is the structural representation of the utility model embodiment Position-Sensitive Detector experiment instrument;
Fig. 3 is the utility model embodiment signal processing circuit structure figure;
Fig. 4 is the utility model embodiment signal processing circuit simulation part schematic diagram;
Fig. 5 is the utility model embodiment signal processing circuit numerical portion schematic diagram;
Fig. 6 is the utility model embodiment usb communication process flow diagram.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Figure 1, Position-Sensitive Detector experiment instrument mainly comprises detector governor motion 11, signal processing circuit 12 and LCD display 13, use laser instrument to make light source, Position-Sensitive Detector is measured the information such as spot center position and light intensity as photodetection receiver.
Wherein, detector governor motion comprises mount pad 26, and one end of mount pad 26 is provided with manual translation platform 24, and manual translation platform 24 is provided with extension bar 23, is fixed with laser instrument 21 on extension bar 23, regulates the position of laser instrument on extension bar 23 by manual translation platform 24; In an embodiment of the present utility model, the outer laser instrument sleeve 27 that is provided with of laser instrument 21.The outer extension bar sleeve 210 that is provided with of extension bar 23.Laser instrument 21 can adopt 650nm ruddiness point-like laser instrument, and Position-Sensitive Detector 22 is used domestic HY0108, and effective photosensitive face length degree is 8mm.
Manual translation platform 24 can be selected the WN101TM13L of Beijing micro-nano Guang Ke Instrument Ltd., and horizontal direction stroke 13mm, minimum scale 0.01mm, precision 5um, can complete the fine adjustment to laser positions.Position-Sensitive Detector 22 is directly installed on mount pad 26, and it is highly unadjustable.
The other end of mount pad 26 is fixed with Position-Sensitive Detector 22, and laser instrument 21 produces laser signal and is irradiated on Position-Sensitive Detector 22, and the two paths of signals line of Position-Sensitive Detector 22 is connected with signal processing circuit by signal wire interface 25; Signal wire interface 25 comprises two paths of signals Xian Ji No. mono-power lead of ground wire, Position-Sensitive Detector 22 and provides the power lead of operating voltage for laser instrument.
Signal processing circuit comprises power management module 301, signal processing module 302 and data acquisition module 304, and power management module 301 is connected with laser instrument, for it provides operating voltage; Signal processing module 302 comprises operational amplifier, adder and substracter circuit and Circuit tuning, the two-way electric current of operational amplifier location sensitive detector 22 outputs amplifies and I/V conversion, voltage signal after conversion carries out addition, subtraction operation by adder and substracter circuit, Circuit tuning carries out level lifting and phase place adjustment to the output signal of adder and substracter circuit, finally the signal after adjusting is sent into data acquisition module 304 and carry out analog to digital conversion, and send to microprocessor;
Microprocessor is connected with LCD display, and microprocessor is provided with serial communication and program burn writing module 308, by this serial communication and program burn writing module 308, carries out program burn writing.
In an embodiment of the present utility model, as shown in Figure 3, this comprehensive test apparatus is also provided with independently voltage table 306 and reometer 307, for the voltage and current test of experimentation.This comprehensive test apparatus also comprises host computer, and microprocessor is provided with usb communication interface module 309, and this host computer is connected with microprocessor by usb communication interface module 309.
Laser instrument 21 produces laser signals and is irradiated on Position-Sensitive Detector 22, if make PSD be operated in reverse-bias state, establishing spot center is X apart from the distance of initial point, and the electric current that flows through N-type layer top electrode is I, and the electric current that flows through two electrodes is respectively I
1and I
2, PSD photosurface length is 2L, has following relation:
I＝I
1+I
2 (1)
From with co-relation, the output current of 22 liang of electrodes of Position-Sensitive Detector amplifies through suitable signal and calculation process can obtain reflecting the signal output of facula position, can measure light spot energy center for the position X at device center, and it only and electric current I
1and I
2with, poor and ratio is relevant, and irrelevant with total current.The total current I of Position-Sensitive Detector 22 is directly proportional to incident intensity, so PSD device can not only detect the position of spot center, and can detect the intensity of hot spot.Regulate manual translation platform 24 can change hot spot one-dimensional square to position, the two-way current signal of generation is transferred to signal by signal wire interface 25 and processes 12 modules and carry out follow-up signal and process.
Laser instrument 21 adopts direct drive mode, and its operating voltage provides from power management module 301.Signal processing module 302 adopts real-time current type interface circuit, it is the resistance feedback mutual conductance formula amplifying circuit being formed by operational amplifier and resistance, for preventing that by input stray capacitance, phase place being lagged behind causes vibration, adopt the mode of feedback resistance and a little Capacitance parallel connection to carry out phase compensation in this circuit.Operational amplifier is configured to can real time record input current and convert thereof into the circuit of Voltage-output, use LF353 to carry out signal amplification, feedback resistance is used sliding resistance, and enlargement factor is adjustable, the reserved independent test of output signal hole, builds circuit voluntarily for user.As shown in Figure 4, the same input end that totalizer 42 all accesses amplifier by two-way input signal is realized, the in-phase input end of subtracter 43You mono-road input signal access amplifier, and another road input signal access inverting input is realized.Be that signal processing circuit 12 is by the two-way output current I of Position-Sensitive Detector 22
1and I
2through prime amplifier amplify and I/V conversion 41 after give respectively totalizer 42 and subtracter 43, thereby complete I
1and I
2addition, subtraction operation.
The type of drive of consideration laser instrument 21 in the utility model is direct drive, so the photo-signal being produced by PSD is also direct current signal, adopts the low-pass filter circuit being produced by resistance and electric capacity can filter high frequency noise in circuit.Circuit tuning comprises level lifting circuit 44 and phase-adjusting circuit 45, and this Circuit tuning is first by input signal and the summation of+2.5V voltage inversion, then carries out anti-phasely, finally by low-pass filter, filters high frequency noise.Signal processing results is sent into data acquisition module 304 and is carried out using STC89C52RC to carry out data processing as processor after analog to digital conversion, calculate light spot energy center, and use the liquid crystal that model is LCD1602 to carry out result demonstration, can meet current demand and cheap.
STC89C52RC can carry out program burn writing by serial communication and program burn writing module 308, uses CH341USB to turn serial port chip.
Regarded as output controlling module 305, according to signal processing module 302 circuit theories, reserves amplifier LF353, resistance, the electric capacity of some, and for each individual devices reserves interface, can build PSD signal process required circuit according to reserved device.
In an embodiment of the present utility model, as shown in Figure 5, the numerical portion of signal processing circuit 12 comprises the software in analog to digital conversion 46, microprocessor unit 47, LCD demonstration 48, usb communication 49 and host computer.Microprocessor is controlled ADC module to plus and minus calculation result and is sampled, and control USB circuit and host computer communicates, by the data upload collecting to host computer, through upper computer software, calculate, complete the testing of light spot position, finally on display interface, show facula position and movement locus.Foregoing circuit also can further be simplified, and the data that collect are calculated by the software of MCU, and result of calculation is shown by LCD.The reserved individual devices of regarded as output controlling module 305, starts to build signal processing circuit voluntarily for user, is intended to take exercise user's manipulative ability and the understanding to signal processing method.
The software section of host computer, by developing instrument and MFC message map mechanism, is realized the design at system interaction interface.Interface, by the research to serial communication and usb communication method, utilizes button control to realize and control upper and lower computer data communication; After data transmission and processing, with text and two kinds of modes of analog coordinate, demonstrate the position of hot spot, and utilize file to preserve the historical information of facula position.This interface can accurate and visual ground display data analysis system related data, realize with user's close friend alternately, with other interface phase ratios of the same type, provide the respective handling of various model sensitive detection parts, there is stronger applicability.
As shown in Figure 6, upper computer software program mainly comprises the following steps: step 51 upper computer software program starts, step 52 is carried out system initialization, whether step 53 judgment device has carried out equipment connection, if step 53 fails to realize normal connection, entering step 58 has judged whether to exit command, if step 54 connects normal, judged whether to cease and desist order, have and enter step 58 and quit a program, without performing step 55, judge whether to start to receive data, step 56 reception & disposal data, and perform step 57 simultaneously data are shown, in execution step 58, judged whether to exit command, have and perform step 59 EOP (end of program), without restarting program loop.
Should be understood that, for those of ordinary skills, can be improved according to the above description or convert, and all these improvement and conversion all should belong to the protection domain of the utility model claims.
Claims (6)
1. a Position-Sensitive Detector comprehensive test instrument, is characterized in that, comprises detector governor motion, signal processing circuit and LCD display;
Wherein, detector governor motion comprises mount pad (26), one end of mount pad (26) is provided with manual translation platform (24), manual translation platform (24) is provided with extension bar (23), on extension bar (23), be fixed with laser instrument (21), by manual translation platform (24), regulate the position of the upper laser instrument of extension bar (23);
The other end of mount pad (26) is fixed with Position-Sensitive Detector (22), laser instrument (21) produces laser signal and is irradiated to Position-Sensitive Detector (22) above, and the two paths of signals line of Position-Sensitive Detector (22) is connected with signal processing circuit by signal wire interface;
Signal processing circuit comprises power management module (301), signal processing module (302) and data acquisition module (304), and power management module (301) is connected with laser instrument, for it provides operating voltage; Signal processing module (302) comprises operational amplifier, adder and substracter circuit and Circuit tuning, the two-way electric current of operational amplifier location sensitive detector (22) output amplifies and I/V conversion, voltage signal after conversion carries out addition, subtraction operation by adder and substracter circuit, Circuit tuning carries out level lifting and phase place adjustment to the output signal of adder and substracter circuit, finally the signal after adjusting is sent into data acquisition module (304) and carry out analog to digital conversion, and send to microprocessor;
Microprocessor is connected with LCD display, and microprocessor is provided with serial communication and program burn writing module (308), by this serial communication and program burn writing module (308), carries out program burn writing.
2. Position-Sensitive Detector comprehensive test instrument according to claim 1, is characterized in that, this signal processing circuit also comprises signal processing circuit test section (303).
3. Position-Sensitive Detector comprehensive test instrument according to claim 1, it is characterized in that, this signal processing circuit also comprises regarded as output controlling module (305), and this regarded as output controlling module (305) is provided with for user and builds the reserved individual devices of signal processing circuit and the interface corresponding with each individual devices.
4. Position-Sensitive Detector comprehensive test instrument according to claim 1, it is characterized in that, this comprehensive test apparatus also comprises host computer, and microprocessor is provided with usb communication interface module (309), and this host computer is connected with microprocessor by usb communication interface module (309).
5. Position-Sensitive Detector comprehensive test instrument according to claim 1, is characterized in that, this comprehensive test apparatus also comprises voltage table (306) and reometer (307).
6. Position-Sensitive Detector comprehensive test instrument according to claim 1, is characterized in that, operational amplifier is used LF353 to carry out signal amplification, and the feedback resistance in this operational amplifier is sliding resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420272793.8U CN203858375U (en) | 2014-05-26 | 2014-05-26 | Position sensitive detector integration experimental instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420272793.8U CN203858375U (en) | 2014-05-26 | 2014-05-26 | Position sensitive detector integration experimental instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203858375U true CN203858375U (en) | 2014-10-01 |
Family
ID=51608221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420272793.8U Expired - Fee Related CN203858375U (en) | 2014-05-26 | 2014-05-26 | Position sensitive detector integration experimental instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203858375U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108170168A (en) * | 2017-11-28 | 2018-06-15 | 北京航天易联科技发展有限公司 | A kind of laser angle tracing machine control system, method and test bracket |
| CN109975796A (en) * | 2019-04-11 | 2019-07-05 | 清华大学深圳研究生院 | Integrated position measurement and adjustment device and method |
| CN110927738A (en) * | 2018-09-20 | 2020-03-27 | 欧姆龙(上海)有限公司 | Signal processing device and method, and photoelectric detection system |
-
2014
- 2014-05-26 CN CN201420272793.8U patent/CN203858375U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108170168A (en) * | 2017-11-28 | 2018-06-15 | 北京航天易联科技发展有限公司 | A kind of laser angle tracing machine control system, method and test bracket |
| CN108170168B (en) * | 2017-11-28 | 2020-12-11 | 北京航天易联科技发展有限公司 | Laser angle tracker control system and method and test support |
| CN110927738A (en) * | 2018-09-20 | 2020-03-27 | 欧姆龙(上海)有限公司 | Signal processing device and method, and photoelectric detection system |
| CN110927738B (en) * | 2018-09-20 | 2022-06-03 | 欧姆龙(上海)有限公司 | Signal processing device and method, and photoelectric detection system |
| CN109975796A (en) * | 2019-04-11 | 2019-07-05 | 清华大学深圳研究生院 | Integrated position measurement and adjustment device and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203858375U (en) | Position sensitive detector integration experimental instrument | |
| CN205336202U (en) | All -weather solar position tracking means | |
| CN105259930B (en) | Round-the-clock solar azimuth tracking and device | |
| CN103927025A (en) | Handwriting digital achieving device and method | |
| CN103884355A (en) | Three-floating gyro calibration test system | |
| CN100386699C (en) | Experiment apparatus for magnetic levitation ball control system | |
| CN107238354A (en) | A kind of Angle Measuring Equipment and its measuring method based on PSD position sensors | |
| CN101603817B (en) | Detection equipment and detection method for thickness of glass | |
| CN203858786U (en) | Four-quadrant photoelectric detector integration experimental instrument | |
| CN104658364A (en) | Optical mechanical and electrical online monitoring and control teaching innovation experimental method | |
| CN104536625A (en) | Large touch screen based on continuous wave frequency modulation laser ranging | |
| CN2935225Y (en) | Experimental device of magnetism-levitation ball control system | |
| CN107764187A (en) | A kind of system and device for linear measure longimetry | |
| CN204439057U (en) | A kind of agricultural mechanical operation area measuring device | |
| CN103148779A (en) | Adjusting device of light source in position measurement equipment | |
| CN206075660U (en) | A kind of photoelectronic warfare analog systemss | |
| CN202092687U (en) | Rotameter and flow sensing system | |
| CN203732442U (en) | Turbidity measuring instrument based on microprocessor STM32F103 | |
| CN207396667U (en) | Ultraviolet partial discharge number of photons detection device based on laser radar range compensation | |
| CN106706123B (en) | A kind of intelligent solar radiation data measurement unit of Internet of Things | |
| CN205175389U (en) | Theodolite for road and bridge construction | |
| CN204406806U (en) | A kind of laser timing guide rail | |
| CN204406807U (en) | A kind of laser timing guide rail | |
| CN216694954U (en) | Measuring instrument for solar altitude | |
| CN205748410U (en) | A kind of device of outdoor demarcation sun sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141001 Termination date: 20150526 |
|
| EXPY | Termination of patent right or utility model |