CN103093670B - Newton's third law experimental apparatus - Google Patents
Newton's third law experimental apparatus Download PDFInfo
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- CN103093670B CN103093670B CN201310032892.9A CN201310032892A CN103093670B CN 103093670 B CN103093670 B CN 103093670B CN 201310032892 A CN201310032892 A CN 201310032892A CN 103093670 B CN103093670 B CN 103093670B
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Abstract
Provided is a Newton's third law experimental apparatus. The Newton's third law experimental apparatus comprises a shell body, a cover plate, a first force probe, a second force probe, a connecting piece, a first pushing and pulling piece, a second pushing and pulling piece, a displaying device and a circuit board which is provided with a control circuit. The cover plate is detachably arranged on the shell body which is provided with a guide slot. The first force probe and the second force probe are slideably arranged inside the guide slot and arranged along a length direction of the guide slot. The first force probe is connected with the second force probe through the connecting piece, relatively far-away end faces of the first force probe and the second force probe are respectively provided with the first pushing and pulling piece and the second pushing and pulling piece. The circuit board and the displaying screen are arranged on the shell body. The Newton's third law experimental apparatus is convenient to use and the accuracy degree of the experimental results is high.
Description
Technical field
The present invention relates to a kind of Newton third law tester.
Background technology
The content of Newton third law is mainly: the acting force between two objects and reacting force always equal and opposite in direction, and direction is contrary, on same straight line.
Current DIS(digital information system, digital information system) experiment in, mainly comprise power probe, collector and computer three parts, during experiment, to two power probe applying power, the experimental data that two force snesor gather by collector is sent to by data line analysis and the display that computer carries out data respectively, so, will be difficult to the experiment condition realizing simultaneously producing acting force and reacting force.In addition, DIS experimental provision connects complicated, operation very loaded down with trivial details, and is subject to the restriction of laboratory environment, and computer must be relied on could to process experimental result, very inconvenient.Moreover, when push-and-pull two power probe, be difficult to the direction of guarantee two acting force on same straight line, obviously so can not accurately verify Newton third law.
Summary of the invention
For the deficiencies in the prior art, object of the present invention is intended to provide a kind of easy to use and Newton third law tester that experimental result degree of accuracy is high.
For achieving the above object, the present invention adopts following technical scheme:
A kind of Newton third law tester, it circuit board comprising housing, cover plate, the first power probe, the second power probe, web member, the first pull-push piece, the second pull-push piece, display device and be provided with control circuit;
Cover plate is removably installed on housing, this housing offers a gathering sill, first power probe and the second power probe are slidably mounted on the interior and length direction along gathering sill of gathering sill and arrange, first power probe by web member connect second power probe, first power probe and second power pop one's head in relative away from end face be respectively equipped with this first pull-push piece and the second pull-push piece; Circuit board and display device are all installed on housing;
This first power probe and the second power probe are used for respectively the acting force of the first pull-push piece and the second pull-push piece being converted to corresponding electric signal in real time; This control circuit generates experimental data for the electric signal sent of popping one's head according to the first power probe and the second power, and this display device is used for the experimental data that display control circuit generates.
This display device is installed between the left side wall of housing and the upper limb of right side wall, and the opening that a size and display device match offered by this cover plate, and this opening is just to this display device.
Newton third law tester also comprises an alarm module, this control circuit also compares with the permissible error scope preset for the difference of the electric signal by the first power probe and the second power probe, difference not at permissible error value range time, control circuit controls alarm module and to give the alarm signal; This control circuit, also for experimental data and the experimental error preset being compared, when experimental data exceeds experimental error, drives alarm module to sound the alarm.
This control circuit comprises the first signal amplification module, secondary signal amplification module, the first analog-to-digital conversion module and the second analog-to-digital conversion module, processor, rechargeable battery and power switch;
First power probe is successively by the first signal amplification module and the first analog-to-digital conversion module connection handling device, second power probe is successively by secondary signal amplification module and the second analog-to-digital conversion module connection handling device, and display device, alarm module, rechargeable battery are used for powering to tester by power switch;
The electric signal that first power is popped one's head in and the second power is popped one's head in be generated amplifies through signal and inputs to processor after analog to digital conversion, this processor generates curve map or the tables of data of reflection two acting force and time relationship according to received signal, and is shown by display device.
This control circuit also comprises the memory module be connected with processor, and memory module is used for the experimental data that storage of processor generates.
Alarm module is loudspeaker.
This control circuit also comprises the charging inlet be connected with rechargeable battery, the data transmission interface be connected with processor and wireless communication module.
First pull-push piece and the second pull-push piece pass two opposite end walls of housing respectively, and this first pull-push piece and the second pull-push piece are positioned on the same straight line being parallel to gathering sill length direction, the left side wall of housing offers two spaced strip first guide grooves along its length, the right side wall of housing offers the second guide groove that two sizes are mated with the first guide groove, and two the second guide grooves are respectively just to two the first guide grooves;
The left surface of the first power probe and the second power probe is respectively provided with two spaced first sliding parts, the right flank of the first power probe and the second power probe is respectively provided with two spaced second sliding parts, first sliding part of the first power probe and the second power probe is slidably mounted in two first guide grooves respectively, and the second sliding part of the first power probe and the second power probe is slidably mounted in two second guide grooves respectively; Offer an accommodating cavity in the diapire of housing, circuit board is contained in this accommodating cavity.
First sliding part and the second sliding part are formed by rotating shaft and the bearing be sheathed on outside rotating shaft; First pull-push piece and the second pull-push piece are pull bar; Web member is rigid connecting rod; The friction factor on each surface of this gathering sill is less than 0.01.
This display device comprises inputting interface and display interface; Inputting interface be provided with turn over button, under turn over button, start button, stop key, sampling rate button, playback button and switching key; This display device is liquid crystal touch screen.
Beneficial effect of the present invention is as follows:
1, the gathering sill of housing can make the first power probe and the second sensor keep on the same line, two opposite end walls of housing play support to the first and second pull-push piece respectively and position-limiting action keeps on the same line to make the acting force of the first and second pull-push piece as far as possible, thus experimental result can be made to meet acting force and the reacting force requirement on the same line of Newton third law, be conducive to improving experiment degree of accuracy.
2, this tester carries display device, and without the need to connecting computing machine, namely the experimental data detected shows intuitively by display device, very conveniently consults.The form of all right curve map of this display device or data drawing list switches display experimental data, and experimental period is set by sampling rate button, by on turn over button and consult upper one group of data, by under turn over button consult next group data, can stop receiving electric signal by control processor by stopping key, automatically each group of data can be sequentially shown by playback button, simple to operation, can conventional efficient be improved.
3, this tester can gather the experimental data of the acting force of the first pull bar and the second pull bar simultaneously, thus makes experimental result more meet Newton third law, improves experiment degree of accuracy.
4, be provided with the memory module for storing experimental data, this tester connects computing machine by data transmission interface, copies experimental data to computing machine process further, also by wireless communication module wireless connections computing machine, to simplify line to facilitate.
Accompanying drawing explanation
Fig. 1 is the stereographic map of the better embodiment of Newton third law tester of the present invention.
Fig. 2 is the stereographic map after the Newton third law tester of Fig. 1 takes off cover plate.
Fig. 3 is the stereographic map after the Newton third law tester of Fig. 1 takes off cover plate and display device.
Fig. 4 is the right view of the Newton third law tester of Fig. 1.
Fig. 5 is the module diagram of the Newton third law tester of Fig. 1.
Fig. 6 and Fig. 7 is the schematic diagram of the display device of the Newton third law tester of Fig. 1.
Component symbol
131, guide groove; 121, guide groove; 95, wireless communication module; 90, cover plate; 83, memory module; 82, power switch; 81, alarm module; 79, nulling switch; 78, the second analog-to-digital conversion module; 77, charging inlet; 76, rechargeable battery; 75, data transmission interface; 74, processor; 73, the first analog-to-digital conversion module; 72, secondary signal amplification module; 71, the first signal amplification module; 70, control circuit; 50, web member; 40, display device; 33, the second pull-push piece; 30, the second power probe; 28, the first sliding part; 24, the second sliding part; 23, the first pull-push piece; 20, the first power probe; 13, right side wall; 12, left side wall; 11, gathering sill; 10, housing.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is described further:
Refer to Fig. 1 to 5, the present invention relates to a kind of Newton third law tester, its better embodiment comprises housing 10, cover plate 90, first power probe 20, second power probe 30, web member 50, first pull-push piece 23, second pull-push piece 33, display device 40, alarm module 81, is provided with the circuit board of control circuit 70.
Cover plate 90 is removably installed on housing 10, this housing 10 offers a strip gathering sill 11, the left side wall 12 of housing 10 offers two spaced strip guide grooves 121 along its length, the right side wall 13 of housing 10 offers the guide groove 131 that two sizes are mated with guide groove 121, and two guide grooves 131 are respectively just to two guide grooves 121.
Length direction in the gathering sill 11 that first power probe 20 and the second power probe 30 are installed on housing 10 and along gathering sill 11 arranges, the left surface of the first power probe 20 and the second power probe 30 is respectively provided with two spaced first sliding parts 28, the right flank of the first power probe 20 and the second power probe 30 is respectively provided with two spaced second sliding parts 24, first sliding part 28 of the first power probe 20 and the second power probe 30 is slidably mounted in two guide grooves 121 respectively, second sliding part 24 of the first power probe 20 and the second power probe 30 is slidably mounted in two guide grooves 131 respectively, to make the first power probe 20 and the second power probe 30 can along the length direction relative sliding of gathering sill 11, first power probe 20 and second power probe 30 relative away from end face be respectively provided with this first pull-push piece 23 and the second pull-push piece 33, first pull-push piece 23 and the second pull-push piece 33 pass two opposite end walls of housing 10 respectively, first power probe 20 and the second power 30 relative end faces of popping one's head in are connected by web member 50.
In the present embodiment, this first sliding part 28 and the second sliding part 24 are formed by rotating shaft and the bearing be sheathed on outside rotating shaft.First pull-push piece 23 and the second pull-push piece 33 are pull bar.Web member 50 is rigid connecting rod.In the present embodiment, the friction factor on this each surface of gathering sill 11 is less than 0.01, with make the first power probe 20 and the second power pop one's head in 30 respective guide slot 11 relative sliding time the resistance that produces can ignore, thus improve experimental result degree of accuracy.
This display device 82 is installed between the left side wall 12 of housing 10 and the upper limb of right side wall 13, the opening that a size and display device 82 match offered by this cover plate 90, and this opening is just to this display device 82, so, experimenter can pass through the experimental result of opening viewing shown by display device 82 of cover plate 90, very intuitively.This display device 40 comprises inputting interface and display interface.Inputting interface be provided with turn over button, under turn over button, start button, stop key, sampling rate button, playback button and switching key.This display device 40 can be LCDs or touch-screen.
Offer an accommodating cavity in the diapire of housing 10, circuit board is contained in this accommodating cavity.
This control circuit 70 comprises the first signal amplification module 71 and secondary signal amplification module 72, first analog-to-digital conversion module 73 and the second analog-to-digital conversion module 78, processor 74, data transmission interface 75, rechargeable battery 76, memory module 83, charging inlet 77, nulling switch 79 and power switch 82.
First power probe 20 is successively by the first signal amplification module 71 and the first analog-to-digital conversion module 73 connection handling device 74, second power probe 30 is successively by secondary signal amplification module 72 and the second analog-to-digital conversion module 78 connection handling device 74, display device 40, data transmission interface 75, memory module 83, nulling switch 79, alarm module 81, rechargeable battery 76 connect charging inlet 77, and rechargeable battery 76 is for powering to tester by power switch 82.
This data transmission interface 75 and charging inlet 77 are all located on the left side wall 12 of housing 10.In the present embodiment, data transmission interface 75 and charging inlet 77 are RJ11 interface.
This alarm module 81 is loudspeaker.
Below the principle of work of better embodiment of the present invention is described:
Tester is started by power switch 82, push away or pull the first pull-push piece 23 and the second pull-push piece 33, first power probe 20 and the second power probe 30 respectively real-time acting force by the first pull-push piece 23 and the second pull-push piece 33 are converted to corresponding electric signal, electric signal is exaggerated and input processor 74 after analog to digital conversion then, processor 74 by received signal storage in memory module 83, and the difference of acting force and reacting force is compared with the permissible error scope (such as 2% measured value) preset, in difference not at permissible error value range, alarm module 81 is then driven to sound the alarm, prompting operator's checking experiment device and standardized experiment operation.After completing an experimental period, processor 74 such as reflects curve map or the tables of data (as Fig. 6 and Fig. 7) of two acting forces and time relationship according to received signal generation experimental data, and judge whether the relation of two acting forces exceeds default experimental error, when exceeding experimental error, alarm module 81 is then driven to sound the alarm, to remind this failure of an experiment of operator, re-start experiment.
Trigger the startup button of display device 40, display device 40 can show to come curve map or the tables of data of self processor 74 in real time, operator switches display curve map or tables of data (as Fig. 6 and Fig. 7) by switching key in display device 40, by sampling rate button, can experimental period be set, by on turn over button and can consult upper one group of data, by under turn over button can consult next group data, can stop receiving electric signal by control processor 74 by stopping key, automatically can sequentially show each group of data by playback button.So, can consult experimental data without the need to connecting computing machine, very convenient.
Experimental data need be copied to computing machine when processing further, by data line connection data transmission interface 75 and computing machine, can the experimental data that memory module 83 li stores be copied to computing machine.Certainly, the experimental data of memory module 83 can also directly be shown by display device 40, to carry out historical review and analysis.
For simplifying line, this control circuit 70 also comprises one for the wireless communication module 95 of wireless connections intelligent electronic device, so, namely experimental data the mode of wireless transmission can be sent to intelligent electronic device as computer, panel computer, smart mobile phone etc. by this tester.
Certainly, due to electronic product self in use error can become large, before starting each experimental period, carry out zero setting calibration by nulling switch 79.
For a person skilled in the art, according to technical scheme described above and design, other various corresponding change and distortion can be made, and all these change and distortion all should belong within the protection domain of the claims in the present invention.
Claims (10)
1. a Newton third law tester, is characterized in that: it circuit board comprising housing, cover plate, the first power probe, the second power probe, web member, the first pull-push piece, the second pull-push piece, display device and be provided with control circuit;
Cover plate is removably installed on housing, this housing offers a gathering sill, first power probe and the second power probe are slidably mounted on the interior and length direction along gathering sill of gathering sill and arrange, first power probe by web member connect second power probe, first power probe and second power pop one's head in relative away from end face be respectively equipped with this first pull-push piece and the second pull-push piece; Circuit board and display device are all installed on housing;
This first power probe and the second power probe are used for respectively the acting force of the first pull-push piece and the second pull-push piece being converted to corresponding electric signal in real time; This control circuit generates experimental data for the electric signal sent of popping one's head according to the first power probe and the second power, and this display device is used for the experimental data that display control circuit generates.
2. Newton third law tester as claimed in claim 1, it is characterized in that: this display device is installed between the left side wall of housing and the upper limb of right side wall, the opening that a size and display device match offered by this cover plate, and this opening is just to this display device.
3. Newton third law tester as claimed in claim 1, it is characterized in that: Newton third law tester also comprises an alarm module, this control circuit also compares with the permissible error scope preset for the difference of the electric signal by the first power probe and the second power probe, difference not at permissible error value range time, control circuit controls alarm module and to give the alarm signal; This control circuit, also for experimental data and the experimental error preset being compared, when experimental data exceeds experimental error, drives alarm module to sound the alarm.
4. Newton third law tester as claimed in claim 3, is characterized in that: this control circuit comprises the first signal amplification module, secondary signal amplification module, the first analog-to-digital conversion module and the second analog-to-digital conversion module, processor, rechargeable battery and power switch;
First power probe is successively by the first signal amplification module and the first analog-to-digital conversion module connection handling device, second power probe is successively by secondary signal amplification module and the second analog-to-digital conversion module connection handling device, and rechargeable battery is used for powering to tester by power switch;
The electric signal that first power is popped one's head in and the second power is popped one's head in be generated amplifies through signal and inputs to processor after analog to digital conversion, this processor generates curve map or the tables of data of reflection two acting force and time relationship according to received signal, and is shown by display device.
5. Newton third law tester as claimed in claim 4, is characterized in that: this control circuit also comprises the memory module be connected with processor, and memory module is used for the experimental data that storage of processor generates.
6. Newton third law tester as claimed in claim 4, is characterized in that: alarm module is loudspeaker.
7. Newton third law tester as claimed in claim 4, is characterized in that: this control circuit also comprises the charging inlet be connected with rechargeable battery, the data transmission interface be connected with processor and wireless communication module.
8. Newton third law tester as claimed in claim 1, it is characterized in that: the first pull-push piece and the second pull-push piece pass two opposite end walls of housing respectively, and this first pull-push piece and the second pull-push piece are positioned on the same straight line being parallel to gathering sill length direction, the left side wall of housing offers two spaced strip first guide grooves along its length, the right side wall of housing offers the second guide groove that two sizes are mated with the first guide groove, and two second guide grooves are respectively just to two first guide grooves; The left surface of the first power probe and the second power probe is respectively provided with two spaced first sliding parts, the right flank of the first power probe and the second power probe is respectively provided with two spaced second sliding parts, first sliding part of the first power probe and the second power probe is slidably mounted in two first guide grooves respectively, and the second sliding part of the first power probe and the second power probe is slidably mounted in two second guide grooves respectively; Offer an accommodating cavity in the diapire of housing, circuit board is contained in this accommodating cavity.
9. Newton third law tester as claimed in claim 7, is characterized in that: the first sliding part and the second sliding part are formed by rotating shaft and the bearing be sheathed on outside rotating shaft; First pull-push piece and the second pull-push piece are pull bar; Web member is rigid connecting rod.
10. Newton third law tester as claimed in claim 1, is characterized in that: this display device comprises inputting interface and display interface; Inputting interface be provided with turn over button, under turn over button, start button, stop key, sampling rate button, playback button and switching key; This display device is liquid crystal touch screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310032892.9A CN103093670B (en) | 2013-01-28 | 2013-01-28 | Newton's third law experimental apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310032892.9A CN103093670B (en) | 2013-01-28 | 2013-01-28 | Newton's third law experimental apparatus |
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| Publication Number | Publication Date |
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| CN103093670A CN103093670A (en) | 2013-05-08 |
| CN103093670B true CN103093670B (en) | 2015-04-15 |
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| CN201310032892.9A Active CN103093670B (en) | 2013-01-28 | 2013-01-28 | Newton's third law experimental apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2772746Y (en) * | 2004-11-24 | 2006-04-19 | 东南大学 | Gloves with power feedback data |
| CN200965742Y (en) * | 2006-04-07 | 2007-10-24 | 陈忠煜 | Interactive force and overweight and zero gravity demonstrator |
| CN202929916U (en) * | 2012-12-01 | 2013-05-08 | 湖州师范学院 | Acting force and counterforce demonstration device |
| CN203242218U (en) * | 2013-01-28 | 2013-10-16 | 深圳市申议实业有限公司 | Integrated Newton's third law tester |
| CN203204892U (en) * | 2013-02-22 | 2013-09-18 | 江苏艾迪生教育发展有限公司 | Object interaction tester |
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| CN103093670A (en) | 2013-05-08 |
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Address after: Longgang District of Shenzhen City, Guangdong province 518000 Bantian street gang snow road No. 2018, Cheonan cloud Valley an industrial park building 3 floor B block 21 unit 2103 Patentee after: Shenzhen Labplus Science and Education Culture Co., Ltd. Address before: 518000 Guangdong city of Shenzhen province Baoan District Longhua streets Hua Ning Road new Wai Industrial Zone second fifth three or four floor Patentee before: Shenzhen Seneasy Industrial Co., Ltd. |