CN203455972U - Demonstration device for principle of probability theory and mathematical statistics - Google Patents
Demonstration device for principle of probability theory and mathematical statistics Download PDFInfo
- Publication number
- CN203455972U CN203455972U CN201320562613.5U CN201320562613U CN203455972U CN 203455972 U CN203455972 U CN 203455972U CN 201320562613 U CN201320562613 U CN 201320562613U CN 203455972 U CN203455972 U CN 203455972U
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- theory
- probability
- circuit board
- probability theory
- light hole
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Abstract
The utility model relates to a demonstration device for the principle of probability theory and mathematical statistics. Currently, there is no teaching aid for the generation of the probability, which can visually helps students to understand the principle of knowledge points for the course of probability theory, so teachers can only employ coin throwing as explanation instances during the explanation of probability events. The demonstration device for the principle of probability theory and mathematical statistics comprises a shell (1) and a group of small balls (16), the top of the shell is connected with a display screen (2), the bottom of the shell is connected with a ball-containing tank (3), the front end of the shell is provided with a vertical plate (4), a group of blocking sticks (5) are vertically arranged on the surface of the vertical plate, the surface of the vertical plate is also provided with a group of light through holes (6), optical sensors (7) are arranged in the light through holes, the optical sensors are connected with a circuit board (8), the circuit board is arranged in the shell, and the blocking sticks are in T shapes. The demonstration device is applicable to the demonstration of the principle of probability theory and mathematical statistics.
Description
technical field:
the utility model relates to a kind of Probability Theory and Math Statistics presentation device of theory.
background technology:
as student, class learning is the major way of study, and teacher is said that knowledge awards student by Classroom Teaching.This branch of instruction in school of theory of probability is followed each stage of Students ' Learning, especially arrives university stage, and the related content of theory of probability is abundanter, and knowledge point is more.Teacher's explanation form becomes electronic courseware and teaches teaching, but still do not depart from uninteresting explanation knowledge point and do in a large number the process of these old stuff of exercise, also do not have at present a kind of generation of probability intuitively teaching aid to help student to understand the principle of this branch of instruction in school, teacher can only rely on and throw away coin as explanation example when explanation probability event.
summary of the invention:
the purpose of this utility model is to provide a kind of Probability Theory and Math Statistics presentation device of theory.
above-mentioned object realizes by following technical scheme:
a Probability Theory and Math Statistics presentation device of theory, its composition comprises: housing and one group of bead, described case top connects display screen, and described housing bottom connects contains ball groove, and described housing front end is installed riser; One group of gear rod at right angle setting is in described riser surface, and described riser surface also has one group of light hole, the inboard optical sensor of installing of described light hole, and described optical sensor is connected in circuit board, and described circuit board is arranged in described housing; Wherein, described gear rod is T-shaped.
described Probability Theory and Math Statistics presentation device of theory, in described housing, also there is accumulator, described accumulator is connected in described circuit board, on described circuit board, also have the display circuit, AD converter and the storer that are connected with process chip, described accumulator connects switch and the pilot lamp of surface of shell.
described Probability Theory and Math Statistics presentation device of theory, described gear rod forms the summit of equilateral triangle, and described light hole is arranged in equilateral triangle in the heart.
described Probability Theory and Math Statistics presentation device of theory, described optical sensor is positioned in the same level at described light hole place, to receive the light passing through in light hole.
the beneficial effects of the utility model:
1. the utility model utilization is arranged on riser surface gear rod and bead are made probability generator, and the device that record data occur is installed in the housing being connected with riser.When principle of probability demonstration starts, one group of bead falls between the gear rod at riser top, and T-shaped gear rod can guarantee that bead can not depart from gear rod and finally fall in Sheng ball groove; In bead dropping process, can there is light by the phenomenon of instantaneous trip during the light hole of process, the optical sensor that now install light hole the inside can produce the cut simulating signal of light, and the data of simulating signal after conversion are stored and show that by display screen each light hole is through the concrete numerical value of bead number of times.
the utility model is arranged to the gear rod that is arranged on riser surface T-shaped, and in bead dropping process, can not depart from the benefit of keeping off rod is the required time of experiment of saving, and bead is finally fallen and contained Qiu Caonei， Faculty and Students and also need not pick up frequently ball.There is exquisite appearance, advantage simple to operate simultaneously.
accompanying drawing explanation:
accompanying drawing 1 is the structural representation of the utility model when any two places' placement bead on housing top.
accompanying drawing 2 is local structure for amplifying schematic diagram of accompanying drawing 1.
accompanying drawing 3 is enclosure interior structural representations of the present utility model.
embodiment:
embodiment 1:
a Probability Theory and Math Statistics presentation device of theory, its composition comprises: housing 1 and one group of bead 16, described case top connects display screen 2, and described housing bottom connects contains ball groove 3, and described housing front end is installed riser 4; One group of gear rod 5 at right angle setting is in described riser surface, and described riser surface also has one group of light hole 6, the inboard optical sensor 7 of installing of described light hole, and described optical sensor is connected in circuit board 8, and described circuit board is arranged in described housing; Wherein, described gear rod is T-shaped.
embodiment 2:
probability Theory and Math Statistics presentation device of theory described in embodiment 1, in described housing, also there is accumulator 9, described accumulator is connected in described circuit board, on described circuit board, also have the display circuit 11, AD converter 12 and the storer 13 that are connected with process chip 10, described accumulator connects switch 14 and the pilot lamp 15 of surface of shell.
embodiment 3:
probability Theory and Math Statistics presentation device of theory described in embodiment 1 or 2, described gear rod forms the summit of equilateral triangle, and described light hole is arranged in equilateral triangle in the heart.
embodiment 4:
probability Theory and Math Statistics presentation device of theory described in embodiment 1 or 2, described optical sensor is positioned in the same level at described light hole place, to receive the light passing through in light hole.
Claims (4)
1.
a Probability Theory and Math Statistics presentation device of theory, its composition comprises: housing and one group of bead, is characterized in that: described case top connects display screen, and described housing bottom connects contains ball groove, and described housing front end is installed riser; One group of gear rod at right angle setting is in described riser surface, and described riser surface also has one group of light hole, the inboard optical sensor of installing of described light hole, and described optical sensor is connected in circuit board, and described circuit board is arranged in described housing; Wherein, described gear rod is T-shaped.
2.
probability Theory and Math Statistics presentation device of theory according to claim 1, it is characterized in that: in described housing, also there is accumulator, described accumulator is connected in described circuit board, on described circuit board, also have the display circuit, AD converter and the storer that are connected with process chip, described accumulator connects switch and the pilot lamp of surface of shell.
3.
probability Theory and Math Statistics presentation device of theory according to claim 1 and 2, is characterized in that: described gear rod forms the summit of equilateral triangle, and described light hole is arranged in equilateral triangle in the heart.
4.
probability Theory and Math Statistics presentation device of theory according to claim 1 and 2, is characterized in that: described optical sensor is positioned in the same level at described light hole place, to receive the light passing through in light hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320562613.5U CN203455972U (en) | 2013-09-11 | 2013-09-11 | Demonstration device for principle of probability theory and mathematical statistics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320562613.5U CN203455972U (en) | 2013-09-11 | 2013-09-11 | Demonstration device for principle of probability theory and mathematical statistics |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203455972U true CN203455972U (en) | 2014-02-26 |
Family
ID=50135833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320562613.5U Expired - Fee Related CN203455972U (en) | 2013-09-11 | 2013-09-11 | Demonstration device for principle of probability theory and mathematical statistics |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203455972U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105513462A (en) * | 2016-02-16 | 2016-04-20 | 南阳理工学院 | High-precision probability theory and mathematical statistical principle networked demonstration device |
| CN105761581A (en) * | 2016-05-14 | 2016-07-13 | 哈尔滨共阳科技咨询有限公司 | Probability teaching demonstration model |
| CN106846995A (en) * | 2017-04-11 | 2017-06-13 | 张馨之 | Stochastic finite element demonstration teaching aid |
| CN106981239A (en) * | 2017-01-24 | 2017-07-25 | 潍坊科技学院 | Mathematical statistics is distributed demo system |
-
2013
- 2013-09-11 CN CN201320562613.5U patent/CN203455972U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105513462A (en) * | 2016-02-16 | 2016-04-20 | 南阳理工学院 | High-precision probability theory and mathematical statistical principle networked demonstration device |
| CN105761581A (en) * | 2016-05-14 | 2016-07-13 | 哈尔滨共阳科技咨询有限公司 | Probability teaching demonstration model |
| CN106981239A (en) * | 2017-01-24 | 2017-07-25 | 潍坊科技学院 | Mathematical statistics is distributed demo system |
| CN106846995A (en) * | 2017-04-11 | 2017-06-13 | 张馨之 | Stochastic finite element demonstration teaching aid |
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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: 20140226 Termination date: 20140911 |
|
| EXPY | Termination of patent right or utility model |