CN109118911B - Equipotential line exploring instrument capable of being recycled - Google Patents
Equipotential line exploring instrument capable of being recycled Download PDFInfo
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- CN109118911B CN109118911B CN201811113088.2A CN201811113088A CN109118911B CN 109118911 B CN109118911 B CN 109118911B CN 201811113088 A CN201811113088 A CN 201811113088A CN 109118911 B CN109118911 B CN 109118911B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/18—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism
- G09B23/181—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism for electric and magnetic fields; for voltages; for currents
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- Theoretical Computer Science (AREA)
- Measuring Magnetic Variables (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention discloses a recyclable equipotential line exploring instrument which comprises a base, a display board, a detecting needle, conductive paper, soft magnetic paper, a fixed frame, conductive metal and magnetic particles with concave cavities, wherein the soft magnetic board and the conductive paper are sequentially laminated on the display board, the soft magnetic paper and the conductive paper are clamped between the fixed frame and the display board, an electrode mounting part is arranged on the conductive paper, the conductive metal is arranged on the electrode mounting part, a clamping groove is formed in the base, the display board is clamped in the clamping groove, a display screen is arranged on the display board, and a control chip and a voltage detection chip are arranged in the display screen. The exploring instrument adopts the combination of the soft magnetic plate and the magnetic particles to replace the traditional combination of the duplicating paper and the white paper, and the equipotential lines are visually embodied on the soft magnetic plate through the magnetic particles, so that the soft magnetic paper and the magnetic particles can be recycled, the material waste is avoided, and the experimental cost is saved.
Description
Technical Field
The invention relates to a teaching instrument, in particular to a recyclable equipotential line exploring instrument.
Background
The equipotential lines are lines composed of points of equal electric potential in the electric field, and are virtual lines for convenience of study, and are not actually present. The equipotential lines are regularly arranged in the electric field, and according to the definition of the equipotential lines, the equipotential lines can be formed only by measuring the points with equal potential in the electric field through an instrument and then connecting the points.
The structure of the traditional equipotential line exploring instrument is as follows: and (3) the surface of the conductive paper tape with the conductive substance faces upwards, the lower part of the conductive paper is sequentially padded with the duplicating paper and the white paper, and finally the conductive paper, the duplicating paper and the white paper are fixed on the wood board by using drawing pins.
The using method of the traditional equipotential line exploring instrument comprises the following steps: the probe of the voltmeter is directly moved on the conductive paper, after an waiting test point is found, the probe is used for extruding the duplicating paper, the indentation is left on the white paper, after the test is finished, the electrode is detached, the white paper is taken out, and a smooth curve is drawn according to a plurality of indentations, namely, an equipotential line required to be drawn in the test.
The traditional equipotential line exploring instrument mainly has the following problems: the probe moves on the conductive paper directly, the conductive paper is easy to scratch, the conductive material is unevenly distributed, and the equipotential lines are inaccurate; after the experiment is finished, the electrodes are detached, white paper is taken out, the distribution situation of the equipotential lines can be seen only after the points with equal potential are connected by a pen, the experiment process is troublesome, and the distribution situation of the equipotential lines cannot be intuitively reflected; every time an experiment is completed, the conductive paper and the white paper need to be replaced, the operation is troublesome, and the material waste is caused.
In view of this, the present inventors have conducted intensive studies on the above problems, and have produced the present invention.
Disclosure of Invention
The invention aims to provide a equipotential line exploring instrument which is simple and convenient to operate, can be recycled and can intuitively embody equipotential lines.
In order to achieve the above purpose, the present invention adopts the following technical scheme: the utility model provides a equipotential line research instrument of circulated use, includes base, show board and probe needle, equipotential line research instrument still includes conductive paper, soft magnetic paper, fixed frame, conductive metal and has the magnetism grain of cavity, soft magnetic plate with conductive paper stacks gradually on the show board, just soft magnetic paper with conductive paper is held fixed frame with between the show board, be equipped with electrode installation department on the conductive paper, install on the electrode installation department conductive metal, be equipped with the draw-in groove on the base, the show board card is located in the draw-in groove, install the display screen on the show board, install control chip and voltage detection chip in the display screen, voltage detection chip's input with the probe needle links to each other, control chip's input with voltage detection chip's output links to each other, control chip's output with the input of display screen links to each other.
Preferably, the display board is provided with an alarm bell, a first key and a second key, the input end of the alarm bell is connected with the output end of the control chip, and the output ends of the first key and the second key are respectively connected with the input end of the control chip.
Preferably, the first probe and the second probe comprise a probe head and a connecting part which are mutually connected through a wire, and the connecting parts of the first probe and the second probe are respectively connected with the input end of the voltage detection chip.
Preferably, the electrode mounting portion is a contact surface between the fixing frame and the conductive paper.
Preferably, the electrode mounting part is one or two electrode mounting holes which are coaxially arranged and are respectively arranged on the display board, the conductive paper and the soft magnetic paper.
Preferably, the conductive metal is a metal copper bar or a circular copper sheet.
Preferably, the display screen and the alarm bell are respectively connected with an external power supply.
By adopting the design scheme, the invention has the beneficial effects that: the exploring instrument adopts the combination of the soft magnetic plate and the magnetic particles to replace the traditional combination of the duplicating paper and the white paper, and the equipotential lines are visually embodied on the soft magnetic plate through the magnetic particles, so that the complicated operation of replacing the white paper is avoided, the exploring experiment operation of the equipotential lines is simpler and more convenient, the soft magnetic paper and the magnetic particles can be recycled, the material waste is avoided, and the experiment cost is saved.
Drawings
FIG. 1 is a schematic structural view of embodiment 1 of the present invention;
fig. 2 is a schematic structural diagram of a probe according to embodiment 1 of the present invention;
FIG. 3 is a side sectional view of embodiment 1 of the present invention;
FIG. 4 is a schematic structural view of embodiment 2 of the present invention;
FIG. 5 is a schematic structural view of embodiment 3 of the present invention;
in the figure: 1. the display board, 2, soft magnetic paper, 3, conductive paper, 4, a first electrode, 5, a second electrode, 6, a fixed frame, 7, a base, 8, a display screen, 9, an alarm bell, 10, a first key, 11, a second key, 12, a first detection needle, 121, a first detection head, 122, a first connecting part, 13, a second detection needle, 131, a second detection head, 132, a second connecting part, 14 and magnetic particles.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The specific application of the equipotential line exploring instrument in exploring equipotential line experiments of uniform strong electric field, point charge electric field and equal amount of heterogeneous charge electric field is respectively illustrated by the following 3 examples.
Example 1
As shown in fig. 1-3, the equipotential line exploring instrument comprises a base 7, a display board 1, a probe, conductive paper 3, soft magnetic paper 2, a fixed frame 6, conductive metal and magnetic particles with concave cavities. In the embodiment, two metal copper bars are adopted as conductive metals, the metal copper bars are respectively adopted as a first electrode 4 and a second electrode 5, soft magnetic paper 2 and conductive paper 3 are sequentially stacked on a display board 1 from bottom to top, the contact surface of the conductive paper 3 and a fixed frame 6 is adopted as an electrode mounting part, the first electrode 4 and the second electrode 5 are respectively stacked on the electrode mounting part, then bolts and nuts are adopted as fasteners, the soft magnetic paper 2 and the conductive paper 3 are clamped between the fixed frame 6 and the display board 1 through the cooperation of the square fixed frame 6 and the bolts and nuts, and finally, the display board 1 is clamped in a clamping groove 71 of a base 7, so that the display board 1 is erected on the base 7.
The display board 1 positioned below the fixed frame 6 is provided with a display screen 8, an alarm bell 9, a first key 10 and a second key 11, a control chip and a voltage detection chip are arranged in the display screen 8, the output end of the voltage detection chip is connected with the input end of the control chip, the input ends of the display screen 8 and the alarm bell 9 are respectively connected with the output end of the control chip, the output ends of the first key 10 and the second key 11 are respectively connected with the input end of the control chip, the voltage value required to be measured in the experiment is input through the first key 10 and the second key 11, the voltage value preset by the control chip is assumed to be 1V, the measured voltage value is reduced by pressing the first key 10, the measured voltage value is increased by pressing the second key 11, and the input voltage value is displayed on the display screen 8.
The probe further comprises a first probe 12 and a second probe 13, the first probe 12 comprises a first probe head 121 and a first connecting part 122 which are mutually connected through wires, the second probe 13 comprises a second probe head 131 and a second connecting part 132 which are mutually connected through wires, the first connecting part 122 and the second connecting part 132 are respectively connected with the input end of the voltage detection chip, and the voltage value measured by the first probe head 121 and the second probe head 131 is transmitted to the voltage detection chip and is transmitted to the display screen 8 through the control chip.
The probe further comprises a magnet 14 having a cavity, the cavity of the magnet 14 being matched to the first probe head 121 of the first probe 12 and the second probe head 131 of the second probe 13, respectively.
The exploring instrument explores the equipotential lines of the uniform strong electric field and uses the method: the first electrode 4 and the second electrode 5 are respectively connected with the positive electrode and the negative electrode of a 9V experimental power supply through wires, and the distribution of an electrostatic field is simulated by using an electric field with constant current, so that the experimental electric field is a uniform and strong electric field. The voltage measured for the input experiment through the first key 10 and the second key 11 is 3V, for example.
The voltage value of the position of the first electrode 4 and the position of the magnetic particle 14 is measured by the first probe 11 and the second probe 12 and transmitted to the control chip through the voltage detection chip, the control chip displays the voltage value on the display screen 8, when the voltage value of the position of the first electrode 4 and the position of the magnetic particle 14 is measured by the first probe 11 and the second probe 12 at a certain position, 3V is measured by the first electrode 11 and the second probe 12, the alarm bell 9 gives out warning sound, the magnetic particle 14 is pressed at the position through external force, then the second probe 12 is taken down, the operation is repeated at different positions of the conductive paper 3, a plurality of position points which are 3V with the voltage of the first electrode 4 are found, the marks of the magnetic particle 14 are placed, and even potential line distribution of the electric field is intuitively observed through the rule of the magnetic particle 14.
Example 2
This embodiment differs from embodiment 1 in that: as shown in fig. 4, this embodiment is applied to exploring equipotential lines of a point charge electric field, and in this embodiment, two coaxially arranged electrode mounting holes are respectively formed in a display board 1, a soft magnetic paper 2 and a conductive paper 3 as electrode mounting portions, one electrode mounting hole is located at a central position of a fixed frame 6, the other electrode mounting hole is located at a lower edge of the fixed frame 6, two metal copper strips and one annular copper strip are used as conductive metals, the two metal copper strips are respectively used as a first electrode 4 and a second electrode 5, a through hole corresponding to the electrode mounting hole is formed in the annular copper strip, the through hole is not an inner hole enclosed by the annular copper strip, the first electrode 4 is mounted in the electrode mounting hole located at the central position of the fixed frame 6, the annular copper strip is mounted on a contact surface of the conductive paper and the fixed frame 6, and the second electrode 5 is arranged on the through hole of the annular copper strip in a penetrating manner.
Example 3
This embodiment differs from embodiment 1 in that: as shown in fig. 5, this embodiment is applied to the exploration of equipotential lines in electric fields of equal amounts of heterogeneous charges, and the embodiment uses two coaxially arranged electrode mounting holes as electrode mounting portions respectively opened at both sides of the display board 1, the soft magnetic paper 2 and the conductive paper 3 in the transverse direction, and metal copper strips are respectively mounted in the electrode mounting holes as the first electrode 4 and the second electrode 5 respectively.
The invention utilizes the attraction effect of the magnetic particles 14 and the soft magnetic paper 2, intuitively presents equipotential lines on the display board 1, can be recycled, avoids material waste and saves experiment cost.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a equipotential line exploration instrument of circulated use, includes base, show board and surveys the needle, its characterized in that: the equipotential line exploring instrument further comprises conductive paper, soft magnetic paper, a fixed frame, conductive metal and magnetic particles with concave cavities, wherein the soft magnetic plate and the conductive paper are sequentially laminated on the display plate, the soft magnetic paper and the conductive paper are clamped between the fixed frame and the display plate, an electrode installation part is arranged on the conductive paper, the conductive metal is installed on the electrode installation part, a clamping groove is formed in the base, the display plate is clamped in the clamping groove, a display screen is installed on the display plate, a control chip and a voltage detection chip are installed in the display screen, the input end of the voltage detection chip is connected with the detection needle, the input end of the control chip is connected with the output end of the voltage detection chip, and the output end of the control chip is connected with the input end of the display screen.
2. A recyclable equipotential line probe according to claim 1 wherein: the display board is provided with an alarm bell, a first key and a second key, the input end of the alarm bell is connected with the output end of the control chip, and the output ends of the first key and the second key are respectively connected with the input end of the control chip.
3. A recyclable equipotential line probe according to claim 1 wherein: the first detection needle and the second detection needle comprise detection heads and connecting parts which are mutually connected through wires, and the connecting parts of the first detection needle and the second detection needle are respectively connected with the input end of the voltage detection chip.
4. A recyclable equipotential line probe according to claim 1 wherein: the electrode mounting part is a contact surface between the fixed frame and the conductive paper.
5. A recyclable equipotential line probe according to claim 1 wherein: the electrode mounting part is one or two electrode mounting holes which are coaxially arranged and are respectively formed in the display board, the conductive paper and the soft magnetic paper.
6. A recyclable equipotential line probe according to claim 1 wherein: the conductive metal is a metal copper strip or a ring copper sheet.
7. A recyclable equipotential line probe according to claim 2 wherein: the display screen and the alarm bell are respectively connected with an external power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811113088.2A CN109118911B (en) | 2018-09-25 | 2018-09-25 | Equipotential line exploring instrument capable of being recycled |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811113088.2A CN109118911B (en) | 2018-09-25 | 2018-09-25 | Equipotential line exploring instrument capable of being recycled |
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| Publication Number | Publication Date |
|---|---|
| CN109118911A CN109118911A (en) | 2019-01-01 |
| CN109118911B true CN109118911B (en) | 2023-11-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811113088.2A Active CN109118911B (en) | 2018-09-25 | 2018-09-25 | Equipotential line exploring instrument capable of being recycled |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB555196A (en) * | 1941-08-28 | 1943-08-10 | William John Jarrard | Improvements in or relating to method and apparatus for plotting equipotential linesand surfaces |
| CN2108974U (en) * | 1991-07-27 | 1992-07-01 | 李振华 | Multifunctional demonstration for electrostatic field |
| CN2485734Y (en) * | 2001-03-16 | 2002-04-10 | 陈楚南 | Page turning and drawer style demonstrator for electrostatic field and potential |
| CN2694401Y (en) * | 2004-03-25 | 2005-04-20 | 王乐安 | Power line distribution testing instrument |
| CN1707558A (en) * | 2005-05-19 | 2005-12-14 | 中国地质大学（武汉） | Simulated electrostatic field mapping system positioned by touch screen |
| CN101937624A (en) * | 2009-06-29 | 2011-01-05 | 西华师范大学 | Electrostatic field tracer |
| RU2012115135A (en) * | 2012-04-16 | 2013-10-27 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования Военно-космическая академия имени А.Ф. Можайского Министерства обороны Российской Федерации | INSTALLATION FOR RESEARCH OF ELECTROSTATIC FIELD |
| CN203786986U (en) * | 2014-05-07 | 2014-08-20 | 宁波华茂文教股份有限公司 | Equipotential line drawing experimental instrument |
| CN104050854A (en) * | 2014-06-24 | 2014-09-17 | 安徽农业大学 | Experimental box used for students to research constant temperature control principle and application |
| CN204695651U (en) * | 2015-05-29 | 2015-10-07 | 江苏六鑫科教仪器设备有限公司 | A kind of equipotential line describes experimental apparatus |
| CN209281714U (en) * | 2018-09-25 | 2019-08-20 | 杨利 | A kind of equipotential lines exploring instrument that can be recycled |
-
2018
- 2018-09-25 CN CN201811113088.2A patent/CN109118911B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB555196A (en) * | 1941-08-28 | 1943-08-10 | William John Jarrard | Improvements in or relating to method and apparatus for plotting equipotential linesand surfaces |
| CN2108974U (en) * | 1991-07-27 | 1992-07-01 | 李振华 | Multifunctional demonstration for electrostatic field |
| CN2485734Y (en) * | 2001-03-16 | 2002-04-10 | 陈楚南 | Page turning and drawer style demonstrator for electrostatic field and potential |
| CN2694401Y (en) * | 2004-03-25 | 2005-04-20 | 王乐安 | Power line distribution testing instrument |
| CN1707558A (en) * | 2005-05-19 | 2005-12-14 | 中国地质大学（武汉） | Simulated electrostatic field mapping system positioned by touch screen |
| CN101937624A (en) * | 2009-06-29 | 2011-01-05 | 西华师范大学 | Electrostatic field tracer |
| RU2012115135A (en) * | 2012-04-16 | 2013-10-27 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования Военно-космическая академия имени А.Ф. Можайского Министерства обороны Российской Федерации | INSTALLATION FOR RESEARCH OF ELECTROSTATIC FIELD |
| CN203786986U (en) * | 2014-05-07 | 2014-08-20 | 宁波华茂文教股份有限公司 | Equipotential line drawing experimental instrument |
| CN104050854A (en) * | 2014-06-24 | 2014-09-17 | 安徽农业大学 | Experimental box used for students to research constant temperature control principle and application |
| CN204695651U (en) * | 2015-05-29 | 2015-10-07 | 江苏六鑫科教仪器设备有限公司 | A kind of equipotential line describes experimental apparatus |
| CN209281714U (en) * | 2018-09-25 | 2019-08-20 | 杨利 | A kind of equipotential lines exploring instrument that can be recycled |
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| CN109118911A (en) | 2019-01-01 |
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