CN207425182U - A kind of digital experimental provision - Google Patents
A kind of digital experimental provision Download PDFInfo
- Publication number
- CN207425182U CN207425182U CN201720858723.4U CN201720858723U CN207425182U CN 207425182 U CN207425182 U CN 207425182U CN 201720858723 U CN201720858723 U CN 201720858723U CN 207425182 U CN207425182 U CN 207425182U
- Authority
- CN
- China
- Prior art keywords
- pressure cooker
- digital
- temperature sensor
- microcontroller
- digital temperature
- 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
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Abstract
A kind of digital experimental provision, air gauge is mounted on pressure cooker top, inflator is connected by gas nozzle with pressure cooker, one-way exhaust valve is installed in gas nozzle, valve inside is commonly called as, digital temperature sensor is placed in pressure cooker, and digital temperature sensor is connected by conducting wire with microcontroller, the charactron of display high pressure kettle temperature beside microcontroller is installed and is attached thereto, pressure cooker top is also equipped with pressure reducing valve.The experimental demonstration device of the utility model, easy to operate, safety and environmental protection, the accurate variation for showing gas interior temperature, so as to reflect the change of gas internal energy, ornamental value is good, overcomes the failure of an experiment phenomenon often occurred in former experiment.
Description
Technical field
The utility model is related to physics teaching experimental device, i.e., a kind of digital experimental provision.
Background technology
People teaches the physics demonstration experiment " air pressure increase and decrease changes interior energy " of version ninth grade in two sub-sections：Air is compressed
When interior energy increase, temperature rise, the cotton burning for causing to be moistened with ether；Air pressure decline, interior energy reduction, temperature when bottle stopper takeoffs
It reduces, vapor liquefaction becomes small water droplet, makes white haze occur in the bottle equipped with a small amount of water.But teacher demonstrate when, experiment be difficult into
Work(or experimental phenomena unobvious, until many teachers is made to abandon the demonstration of the experiment.
The content of the invention
The shortcomings that in order to which above-mentioned experiment is overcome to be difficult successfully, the utility model proposes a kind of digital experimental provisions.
This digital experimental provision, including pressure cooker, inflator, air gauge, digital temperature sensor, microcontroller sum number
Code pipe, which is characterized in that air gauge is mounted on pressure cooker top, and inflator is connected with pressure cooker by gas nozzle, pacified in gas nozzle
Equipped with one-way exhaust valve, valve inside is commonly called as, digital temperature sensor is placed in pressure cooker, and digital temperature sensor passes through conducting wire
It is connected with microcontroller, the charactron of display high pressure kettle temperature is installed beside microcontroller and is attached thereto, pressure cooker top is also
Pressure reducing valve is installed.
Digital temperature sensor is Da Nasi digital temperature sensors.
The application method of the utility model：
A, the exhaust pipe of inflator is connected with valve inside；
B, the conducting wire on digital temperature sensor is connected with microcontroller；
C, the switch on microcontroller is opened；
D, inflated with inflator in pressure cooker, allow observation of students inflate during air pressure meter reading rising and number
Pipe temperature reading becomes larger.
E, lift safety valve artificially to deflate, observe the decline of air pressure and the reduction of temperature in deflation course.
F, thought deeply according to experiment and air pressure increase and decrease, gradient of temperature, the relation changed with gas internal energy are discussed.
The experimental demonstration device of the utility model, easy to operate, safety and environmental protection is not required to chemicals, can substitute former test
Two covering devices that scheme must be used show the increase and decrease of air pressure, with charactron dynamic, accurate display gas interior temperature with air gauge
The variation of degree, so as to reflect the change of gas internal energy, ornamental value is good, overcomes the failure of an experiment often occurred in former experiment and shows
As.
Description of the drawings
Fig. 1 is the structure chart of the utility model
Fig. 2 is the circuit diagram of the utility model
In figure：1st, pressure cooker, 2, inflator, 3, air gauge, 4, digital temperature sensor, 5, microcontroller, 6, charactron, 7,
Gas nozzle, 8, conducting wire, 9, pressure reducing valve.
Specific embodiment
To the utility model, detailed description are as follows below in conjunction with the accompanying drawings：
In Fig. 1：This digital experimental provision, including pressure cooker 1, inflator 2, air gauge 3, digital temperature sensor
4th, microcontroller 5 and charactron 6, air gauge 3 are mounted on 1 top of pressure cooker, and inflator 2 is connected by gas nozzle 7 with pressure cooker 1,
One-way exhaust valve is installed in gas nozzle 7, is commonly called as valve inside（It is not drawn into）, digital temperature sensor 4 is placed in pressure cooker 1, several
Word temperature sensor 4 is connected by conducting wire 8 with microcontroller 5, and 5 side of microcontroller is equipped with the charactron of display high pressure kettle temperature
It 6 and is attached thereto, 1 top of pressure cooker is also equipped with pressure reducing valve 9.
Digital temperature sensor is Da Nasi digital temperature sensors.
Fig. 2 is the temperature measurement circuit schematic diagram of the utility model, and circuit theory is as follows：
After switch K2 closes, the regulator circuit that is made of integrated circuit 7805, C4 and C5, by the cell voltage of 6V through becoming
The DC voltage of 5V works for microcontroller；
The CPU internal circuits of capacitance C2, C3 and crystal oscillator Y1 and AT89S52 form the work clock of microcontroller, work
Working frequency is 12M.31 feet of AT89S52 connect high level, when so that the microcontroller is worked in performing chip ROM program；
Capacitance C1 and R2 composition start automatic reset circuit；K1 is manual reset switch, this experimental provision can be made to work
During, it needs to reset at any time according to operation；
Q5, Q6, Q7, Q8, Q9 and Q10 are respectively the position selected control system driving triode of six common-anode charactrons, six
The Duan Xuanduan of LED charactrons is connected to the P0 mouths of AT89S52 in the form of bus, and six common-anode charactrons are using Dynamic Announce
Mode shows measured temperature；
R1 provides normal operating voltage for the digital temperature sensor of DS18B20；
R3, R4, Q11 and B1 form buzzer alarm circuit；When the work of DS18B20 digital temperature sensors is abnormal,
B1 can send alarm, to notify operator.
Claims (2)
1. a kind of digital experimental provision, including pressure cooker, inflator, air gauge, digital temperature sensor, microcontroller and number
Pipe, which is characterized in that air gauge is mounted on pressure cooker top, and inflator is connected with pressure cooker by gas nozzle, is installed in gas nozzle
Have one-way exhaust valve, be commonly called as valve inside, digital temperature sensor is placed in pressure cooker, digital temperature sensor by conducting wire and
Microcontroller is connected, and the charactron of display high pressure kettle temperature is equipped with beside microcontroller and is attached thereto, pressure cooker top is also pacified
Equipped with pressure reducing valve.
A kind of 2. digital experimental provision according to claim 1, which is characterized in that digital temperature sensor Da Nasi
Digital temperature sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720858723.4U CN207425182U (en) | 2017-07-16 | 2017-07-16 | A kind of digital experimental provision |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720858723.4U CN207425182U (en) | 2017-07-16 | 2017-07-16 | A kind of digital experimental provision |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207425182U true CN207425182U (en) | 2018-05-29 |
Family
ID=62398232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720858723.4U Expired - Fee Related CN207425182U (en) | 2017-07-16 | 2017-07-16 | A kind of digital experimental provision |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207425182U (en) |
-
2017
- 2017-07-16 CN CN201720858723.4U patent/CN207425182U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180529 Termination date: 20190716 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |