CN202939862U - Temperature sensing principle demonstration instrument - Google Patents
Temperature sensing principle demonstration instrument Download PDFInfo
- Publication number
- CN202939862U CN202939862U CN 201220613828 CN201220613828U CN202939862U CN 202939862 U CN202939862 U CN 202939862U CN 201220613828 CN201220613828 CN 201220613828 CN 201220613828 U CN201220613828 U CN 201220613828U CN 202939862 U CN202939862 U CN 202939862U
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- fuel tank
- students
- test platform
- integrated circuit
- chip microcomputer
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- Investigating Or Analyzing Materials Using Thermal Means (AREA)
- Instructional Devices (AREA)
Abstract
The utility model provides a temperature sensing principle demonstration instrument, comprising an oil tank filled with oil, and a platinum resistor, a bridge circuit, an amplification circuit, an A/D converter, a one-chip microcomputer, and a display connected in sequence. A temperature sensor is connected with the A/D converter. Data and curves displayed on a LCD of the demonstration instrument can preferably demonstrate relations between resistance values and measured physical quantities, so that students can visually see that when external measured quantities change, how output (resistance values) of sensor changes, how physical laws work in books work, and what application does the relations have in actual field. In addition, in manufacturing and development of demonstrative experiment devices, students can participate in scientific manufacturing activities which are beneficial for motivating students' personality development, so that students receive basic training of scientific research, and scientific literacy and comprehensive abilities of students can be improved in an all-round manner.
Description
Technical field
The utility model relates to the educational facilities field, and a kind of temperature sensing principle demonstration instrument is provided.
Background technology
College Physics is an experimental science, and learning physics be unable to do without experiment. and under the overall situation of current innovative education, the physics demonstration experiment teaching is indispensable important teaching means in college physics teaching, can play immeasurable effect.
Due to the physics demonstration experiment employing is the method for " performance experiment ", be different from other any experiments, it is that the teacher performs operation, give the student with lively distinctness and deep visual impression. and the use of comprehensive demonstration device not only can improve the student to the understanding of various physical phenomenons, key concept.See that in sensor, reigning physics law works under what conditions with making student's true feeling; And can also be punctured into the practical application in various engineerings in experiment, developing student's outlook is one of a kind of the most effective object teaching method of student's acquire knowledge, tempers and cultivate student's spirit of exploration and creative quality.
The utility model content
The purpose of this utility model is to provide a kind of temperature sensing principle demonstration instrument.
The utility model is for achieving the above object by the following technical solutions:
A kind of temperature sensing principle demonstration instrument is characterized in that: comprise integrated circuit part, external part of detecting and service test platform;
Described integrated circuit partly comprises bridge diagram, amplifying circuit, A/D converter, single-chip microcomputer, the display that is linked in sequence;
Described external part of detecting comprises fuel tank, is arranged on temperature sensor and platinum resistance in fuel tank;
Described integrated circuit part and external part of detecting all are arranged on the service test platform; Described fuel tank is arranged on service test platform surface level, described display is arranged on the service test platform, be provided with the shift knob of whole system on described service test platform, also comprise thermal resistance and be connected regulating the control module of heating of heating resistor heating intensity control knob, be used for connecting the jack of the partly integrated circuit part of integrated circuit and external part of detecting circuit;
Platinum resistance is submerged in fuel tank, bridge diagram is converted to the variation of the resistance value of platinum resistance and gives amplifying circuit after magnitude of voltage and amplify and then give the A/D converter and carry out analog to digital conversion, voltage signal after the logarithmic mode conversion is given single-chip microcomputer and is processed the resistance value that is converted to platinum resistance, and display will show the resistance value of photoresistance; Described platinum resistance is provided with for the control module of heating of regulating the heating resistor heating intensity, the temperature sensor that gathers oil liquid temperature in fuel tank is given single-chip microcomputer with the temperature signal that collects, and after the signal that single-chip microcomputer collects temperature sensor is processed, oil liquid temperature is presented on display.
Be provided with leakage fluid dram in described fuel tank.
The utlity model has following beneficial effect:
the data of liquid crystal screen display of the present utility model and curve can well be demonstrated out the relation between resistance value and measurand, allow the student see intuitively, but during extraneous measured changing, how the output of sensor (resistance) changes, how the physical law that books are said and physics law work, what has use in practical field, the making of demonstrating experiment device exploitation in addition, can also allow the student participate in scientific and technological creative activity, be conducive to excite student's personality development. allow the student be subject to the propaedeutics of research work, improve student's scientific literacy and integration capability comprehensively.
Description of drawings
Fig. 1 is the utility model service test platform mechanism map;
In figure, 1 for system drives button, and in figure, 2 are that system closes button, in figure 3 in intensification control knob, figure 4 for cooling control in that girl, figure 5 be in display, figure 6 in jack, figure 7 for 8 being leakage fluid dram in fuel tank, figure.
Embodiment
A kind of temperature sensing principle demonstration instrument comprises integrated circuit part, external part of detecting and service test platform;
Described integrated circuit partly comprises bridge diagram, amplifying circuit, A/D converter, single-chip microcomputer, the display that is linked in sequence;
Described external part of detecting comprises fuel tank, is arranged on temperature sensor and platinum resistance in fuel tank;
Described integrated circuit part and external part of detecting all are arranged on the service test platform; Described fuel tank is arranged on service test platform surface level, described display is arranged on the service test platform, be provided with the shift knob of whole system on described service test platform, also comprise thermal resistance and be connected regulating the control module of heating of heating resistor heating intensity control knob, be used for connecting the jack of the partly integrated circuit part of integrated circuit and external part of detecting circuit;
Platinum resistance is submerged in fuel tank, bridge diagram is converted to the variation of the resistance value of platinum resistance and gives amplifying circuit after magnitude of voltage and amplify and then give the A/D converter and carry out analog to digital conversion, voltage signal after the logarithmic mode conversion is given single-chip microcomputer and is processed the resistance value that is converted to platinum resistance, and display will show the resistance value of photoresistance; Described platinum resistance is provided with for the control module of heating of regulating the heating resistor heating intensity, the temperature sensor that gathers oil liquid temperature in fuel tank is given single-chip microcomputer with the temperature signal that collects, and after the signal that single-chip microcomputer collects temperature sensor is processed, oil liquid temperature is presented on display.
Be provided with leakage fluid dram in described fuel tank.
the data of this apparatus for demonstrating liquid crystal screen display and curve can well be demonstrated out the relation between resistance value and measurand, allow the student see intuitively, but during extraneous measured changing, how the output of sensor (resistance) changes, how the physical law that books are said and physics law work, what has use in practical field, the making of demonstrating experiment device exploitation in addition, can also allow the student participate in scientific and technological creative activity, be conducive to excite student's personality development. allow the student be subject to the propaedeutics of research work, improve student's scientific literacy and integration capability comprehensively.
Claims (2)
1. a temperature sensing principle demonstration instrument, is characterized in that: comprise integrated circuit part, external part of detecting and service test platform;
Described integrated circuit partly comprises bridge diagram, amplifying circuit, A/D converter, single-chip microcomputer, the display that is linked in sequence;
Described external part of detecting comprises fuel tank, is arranged on temperature sensor and platinum resistance in fuel tank; Described integrated circuit part and external part of detecting all are arranged on the service test platform; Described fuel tank is arranged on service test platform surface level, described display is arranged on the service test platform, be provided with the shift knob of whole system on described service test platform, also comprise thermal resistance and be connected regulating the control module of heating of heating resistor heating intensity control knob, be used for connecting the jack of the partly integrated circuit part of integrated circuit and external part of detecting circuit;
Platinum resistance is submerged in fuel tank, bridge diagram is converted to the variation of the resistance value of platinum resistance and gives amplifying circuit after magnitude of voltage and amplify and then give the A/D converter and carry out analog to digital conversion, voltage signal after the logarithmic mode conversion is given single-chip microcomputer and is processed the resistance value that is converted to platinum resistance, and display will show the resistance value of photoresistance; Described platinum resistance is provided with for the control module of heating of regulating the heating resistor heating intensity, the temperature sensor that gathers oil liquid temperature in fuel tank is given single-chip microcomputer with the temperature signal that collects, and after the signal that single-chip microcomputer collects temperature sensor is processed, oil liquid temperature is presented on display.
2. a kind of temperature sensing principle demonstration instrument according to claim 1, is characterized in that: be provided with leakage fluid dram in fuel tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220613828 CN202939862U (en) | 2012-11-20 | 2012-11-20 | Temperature sensing principle demonstration instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220613828 CN202939862U (en) | 2012-11-20 | 2012-11-20 | Temperature sensing principle demonstration instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202939862U true CN202939862U (en) | 2013-05-15 |
Family
ID=48324089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220613828 Expired - Fee Related CN202939862U (en) | 2012-11-20 | 2012-11-20 | Temperature sensing principle demonstration instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202939862U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104409002A (en) * | 2014-12-15 | 2015-03-11 | 南京化工职业技术学院 | Thermal resistance property demonstration device |
| CN109883574A (en) * | 2019-03-21 | 2019-06-14 | 辽宁科技大学 | A kind of thermistor temp characteristic measuring device based on embedded system |
-
2012
- 2012-11-20 CN CN 201220613828 patent/CN202939862U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104409002A (en) * | 2014-12-15 | 2015-03-11 | 南京化工职业技术学院 | Thermal resistance property demonstration device |
| CN109883574A (en) * | 2019-03-21 | 2019-06-14 | 辽宁科技大学 | A kind of thermistor temp characteristic measuring device based on embedded system |
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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: 20130515 Termination date: 20131120 |