CN202362989U - Apparatus for measuring Planck constant experiment by using photoelectric effect - Google Patents
Apparatus for measuring Planck constant experiment by using photoelectric effect Download PDFInfo
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- CN202362989U CN202362989U CN2011204498639U CN201120449863U CN202362989U CN 202362989 U CN202362989 U CN 202362989U CN 2011204498639 U CN2011204498639 U CN 2011204498639U CN 201120449863 U CN201120449863 U CN 201120449863U CN 202362989 U CN202362989 U CN 202362989U
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Abstract
The utility model provides an apparatus for measuring a Planck constant experiment by using the photoelectric effect, comprising a mercury lamp power supply, a mercury lamp, an optical filter, a diaphragm, a photoelectric tube, a tester integrated with a direct current voltmeter and a direct current microammeter, a circuit board embeded with a one-chip microcomputer, a bluetooth emission module, a display and a computer used for experiment data collection and real-time processing and configured with a bluetooth receiving module; the tester is in connection with the one-chip microcomputer. When a student measures a cut-off voltage and presses a ''recording'' button on the circuit board embedded with the one-chip microcomputer, the one-chip microcomputer can transmits cut-off voltage data to and display the cut-off voltage data on the display in connection with the one-chip microcomputer in real time; when the student finishes measuring all necessary data and presses a ''sending'' button on the circuit board embedded with the one-chip microcomputer, a data packet including the above data and a number and name of the student are sent to the computer through the bluetooth emission module and the computer performs storage and subsequent processing for the data.
Description
Technical field
The utility model relates to a kind of Experiment of College Physics device, relates generally to a kind ofly to measure Planck's constant collection of experiment data, transmission and real time processing system with photoelectric effect, belongs to the Experiment of College Physics instrument field.
Background technology
Photoelectric effect experiment has landmark meaning for the essence of understanding light and the development of early stage quantum theory, and therefore measuring the Planck's constant experiment with photoelectric effect becomes one of basic experiment of college physical experiment teaching.
When incident illumination is mapped on the phototube cathode; The photoelectron that photoelectric tube produces anode migration under effect of electric field constitutes photocurrent; Through changing impressed voltage; Can measure the size of photocurrent, can draw the VA characteristic curve of photoelectric tube, this is a ultimate principle of measuring the Planck's constant experiment with photoelectric effect.In the Experiment of College Physics, normally the student measures cut-off voltage, is recorded on the laboratory report paper, calculates Planck's constant with least square method then.
Yet there are three problems in such experimentation, and first: the experiment grasp degree for the student is difficult for understanding; As everyone knows; Plagiarism phenomenon between the student is ubiquitous, if the student has plagiarized other people experimental data after experiment, and submits laboratory report to this; Experiment teacher can not in time find this; Because student's data recording process is independent of teacher fully, to be exactly teacher grasp degree for student's experiment to the consequence that causes like this can not have one and well understand, and then cause deviation occurring for the assessment of quality of instruction; The second, time-consuming in data recording process, the effort of student, data are discrete to each other, are easy to generate mistake; The 3rd, to the processing of student data how by rule of thumb the experiment teacher deviation inevitably occurs in scoring process.
Summary of the invention
The utility model proposes to above-mentioned problem, provides a kind of and measures the Planck's constant experimental provision with photoelectric effect, and it can measure cut-off voltage, and convenience reads experimental data accurately, transmits data, handles experimental data in real time.In teaching, can change experiment content at any time according to the experiment needs, simple, easy row.
Embodiment according to the utility model; Provide a kind of and measured the Planck's constant experimental provision, having comprised: mercury lamp power supply, mercury lamp, optical filter, diaphragm, photoelectric tube, the tester that is integrated with D.C. voltmeter and DC microammeter, the circuit board that is embedded with single-chip microcomputer, Bluetooth wireless transmission module, LCD, the computing machine and the data processor that are used for the experimental data collection and handle in real time with photoelectric effect.
Measure the Planck's constant experiment with photoelectric effect, prior art is very ripe, wherein comprises DC microammeter and direct current voltage meter on the tester, no longer gives unnecessary details at this.The utility model is characterised in that: this is measured in the Planck's constant experimental provision with photoelectric effect; The same single-chip microcomputer of tester is connected; When the student measures cut-off voltage; Press " record " button on the circuit board that is embedded with single-chip microcomputer, single-chip microcomputer can send the cut-off voltage data in real time and be presented on the coupled LCD that connects.After the student all measured desired data, by " transmission " button, the packet that comprises above-mentioned data and student numbering and name sent to through the Bluetooth transmission module on teacher's the computing machine, by computing machine data is carried out subsequent treatment again.
Through said apparatus, just solve aforesaid problem, after whenever once testing; The student can both be real-time the experimental data of on display, seeing this time; Also be the data of cut-off voltage, if dissatisfied for experimental result, could be directly with data deletion; Again experimentize, what it was seen at last is whole experimental data of an integral body; Moreover after the each experiment of student finished, the experimental data that all needs to include personal information sent on teacher's the computing machine, can guarantee that teacher sees the experimental data that each student is original, has effectively prevented to plagiarize between the student generation of phenomenon; The 3rd, adopt this system, computer program with Data Processing in Experiment and storage after, can call at any time, as the objective basis of teacher when the given laboratory report mark, thereby carry out conveniently, just experimental evaluation.
Description of drawings
Fig. 1 measures Planck's constant experimental provision structural representation with photoelectric effect;
Fig. 2 is collection, transmission and a receiver module synoptic diagram of measuring Planck's constant experimental provision data with photoelectric effect;
In above-mentioned figure, 1 mercury lamp power supply, 2 expression mercury lamps; 3 expression optical filters, 4 expression diaphragms, 5 expression photoelectric tubes; 6 expressions are integrated with the tester of DC microammeter and D.C. voltmeter, 7 expression pedestals, 8 expression single-chip microcomputers; 9 expression displays, 10 expression Bluetooth transmission modules, 11 expressions are furnished with the computing machine of bluetooth receiver module.
Specific embodiment
Fig. 1 shows in the utility model the structural representation of measuring Planck's constant with photoelectric effect, and this part is with of the prior art consistent with photoelectric effect measurement Planck's constant experimental provision.
The utility model is characterised in that its collection that also comprises data, transmission and receiver module.Tester 6 is connected with single-chip microcomputer 8 in the utility model; When the student is 0 through the registration of observing DC microammeter, when measuring cut-off voltage, press " record " button on the circuit board that is embedded with single-chip microcomputer; Single-chip microcomputer can be with on this cut-off voltage data transmission to coupled display that connects; And, be embedded with on the circuit board of single-chip microcomputer and also be provided with " transmission " button and Bluetooth transmission module, said through pressing " transmission " button; Said Bluetooth transmission module can be sent to the bluetooth receiver module on teacher's computing machine with the packet that includes student information and above-mentioned data, receives back storage and processing on this computing machine.
Display: the data that the singlechip chip collection is come are all shown experiment content and data by 8 o'clock TFT LCD.The experimental data that the student observes through liquid crystal display has associative perception, can be through the data of contrast different measuring group, the operating mistake that possibly exist in the judgment experiment.For misdata, can directly delete by " deletion " key on the circuit board that is embedded with single-chip microcomputer.The user can also select LCD different, suitable dimension according to what difference of data in the experiment.
Display format on the display is as shown in table 1, and " for the first time "～" the 5th time " expression is repeatedly measured, and makes things convenient for follow-up data to handle to average.
Data transmit: experimental data is stored in the single-chip microcomputer temporarily, and the circuit board that is embedded with single-chip microcomputer is provided with " transmission " button, clicks this button, and then data send through the blue teeth wireless signal through bluetooth module.
Data Receiving: be inserted with Bluetooth adapter on the computing machine as the bluetooth receiver module, can receive Bluetooth signal.
Data in real time is handled: the program that writes is arranged on the computing machine, read the data that Bluetooth adapter receives, the storage experimental data is to being in the file of filename, as data backup with student's student number and name.Simultaneously; Computer program also can be handled experimental data, is presented on the computer screen experiment quality of doing with teacher's real-time judge student of convenient teaching during fructufy after the processing; And objective basis is provided for correcting laboratory report, make things convenient for the teacher to screen the accuracy of student data.
If want to change the part experiment content, only need in single-chip microcomputer write-in program again, adjustment liquid crystal display displaying contents is rewritten computer processing, can practice thrift big measuring appratus and upgrade and improvement expenses.
Table 1
Claims (3)
1. measure the Planck's constant experimental provision with photoelectric effect for one kind, comprising: mercury lamp power supply, mercury lamp, optical filter, diaphragm, photoelectric tube, the tester that is integrated with D.C. voltmeter and DC microammeter, the circuit board that is embedded with single-chip microcomputer, Bluetooth transmission module, display, be used for the computing machine that disposes the bluetooth receiver module that experimental data is collected and handled in real time; Tester simultaneous single-chip microcomputer is connected; When the student measures cut-off voltage; Press " record " button on the circuit board that is embedded with single-chip microcomputer; Single-chip microcomputer can after the student all measures desired data, be pressed " transmission " button on the circuit board that is embedded with single-chip microcomputer with on the display that the cut-off voltage data in real time sends to and is presented at single-chip microcomputer is connected; The packet that comprises above-mentioned data and student numbering and name sends on the said computing machine through the Bluetooth transmission module, by said computing machine data is stored and subsequent treatment again.
2. device according to claim 1, said display are LCD.
3. device according to claim 1 also is provided with " deletion " key on the said circuit board that is embedded with single-chip microcomputer, is used for the experimental data in experimentation deletion action mistake.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204498639U CN202362989U (en) | 2011-11-11 | 2011-11-11 | Apparatus for measuring Planck constant experiment by using photoelectric effect |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204498639U CN202362989U (en) | 2011-11-11 | 2011-11-11 | Apparatus for measuring Planck constant experiment by using photoelectric effect |
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| CN202362989U true CN202362989U (en) | 2012-08-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011204498639U Expired - Fee Related CN202362989U (en) | 2011-11-11 | 2011-11-11 | Apparatus for measuring Planck constant experiment by using photoelectric effect |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102509500A (en) * | 2011-11-11 | 2012-06-20 | 华北电力大学（保定） | Experimental device for measuring Planck constant through photoelectric effect |
| CN103559825A (en) * | 2013-10-23 | 2014-02-05 | 国家电网公司 | Experiment device for measuring Planck constant |
-
2011
- 2011-11-11 CN CN2011204498639U patent/CN202362989U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102509500A (en) * | 2011-11-11 | 2012-06-20 | 华北电力大学（保定） | Experimental device for measuring Planck constant through photoelectric effect |
| CN103559825A (en) * | 2013-10-23 | 2014-02-05 | 国家电网公司 | Experiment device for measuring Planck constant |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20120801 Termination date: 20121111 |