CN203588521U - A microcomputer simple pendulum experimental instrument - Google Patents
A microcomputer simple pendulum experimental instrument Download PDFInfo
- Publication number
- CN203588521U CN203588521U CN201320238528.3U CN201320238528U CN203588521U CN 203588521 U CN203588521 U CN 203588521U CN 201320238528 U CN201320238528 U CN 201320238528U CN 203588521 U CN203588521 U CN 203588521U
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- pendulum
- microcomputer
- swing ball
- experimental instrument
- plate
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Abstract
A microcomputer simple pendulum experimental instrument is mainly used for teaching demonstration, and the microcomputer simple pendulum experimental instrument can enable the following experiments to be carried out in a quantification mode: 1, that a period T is unrelated to an amplitude when an oscillation angle of oscillation of a simple pendulum is in the range of 10 degrees is researched; 2, that the T is unrelated to the mass a pendulum ball is researched; 3, that the T is directly proportional to a square root of a pendulum length L is researched; and 4, a gravitational acceleration g value is measured. The microcomputer simple pendulum experimental instrument is composed of a master control circuit and an assembly. The master control circuit realizes laser probe information acquisition and nixie tube displaying; communication with a computer is realized through a USB interface; and input of pendulum times and the pendulum length and functions of automatic counting, timing, result calculating and displaying are realized through C language programming. The simple pendulum assembly is composed of a pedestal, a symmetrical type triangle support, cycloids, the pendulum ball and a level gauge. The symmetrical type triangle support is formed by two sets of symmetrical supports which are connected through a cross bar on the top. Specifically, each set of the supports is formed in the way that a trapezoidal plate is perpendicular to the pedestal as a support plate, and besides that, a triangle plate is employed as a reinforcing plate which is perpendicular to the pedestal and perpendicular to the support plate.
Description
Technical field
The utility model relates to teaching, demonstration equipment field, and specifically a kind of antijamming capability is strong, and timing, counting accurately, are measured and changed swing ball and demonstrate convenient electrical type pendulum experimental instrument.
Background technology
At present, the electrical type pendulum experimental instrument using adopts photoelectricity door to be subject to extraneous light to disturb large (photoelectricity door adopts photoresistance, disturbed by natural light); Can not change experiment swing ball (experiment with simple pendulum in physics relate to use the object of different densities, volume to do experiment can verify that this experiment is affected by aerostatic buoyancy); Show data inconvenience, not vivid (only adopting several charactrons or monochromatic LCD screen); Connect computer inconvenience (serial ports has been no longer computer standard configuration interface, as current notebook) experiment instrument (comprising current non-electronic class pendulum experimental instrument) bracing frame shakiness, strengthen experimental error.
Summary of the invention
In order to overcome in existing electrical type pendulum experimental instrument, be easily disturbed, can not change swing ball, show the drawback of data inconvenience and experiment instrument bracing frame shakiness, it is that singlechip technology is observed swing ball by laser probe that the utility model is used microcomputer, there is writing time, number of times to calculate the function of gravity acceleration value, can follow compunlcation by USB interface, pendulum length, pendulum be can on experiment instrument or computer, input, pendulum length, pendulum, change in process time, gravity acceleration value and hunting period also can on experiment instrument and computer, be shown simultaneously; Can conveniently realize the replacing of multiple different quality, volume bead; The bracing frame that adopts triangle principle design experiment instrument, makes support more firm, and experimental data is more accurate.
The utility model solves the technical scheme that its technical matters adopts: microcomputer pendulum experimental instrument is an entirety, single pendulum assembly and single chip machine controlling circuit, consists of.
Single chip machine controlling circuit adopts single-chip microcomputer as center control chip, realize laser probe information acquisition, charactron show, by USB interface follow that compunlcation, C Programming with Pascal Language complete that pendulum is inferior, the function of the input of pendulum length and Auto-counting, timing, result of calculation, demonstration.At single pendulum instrument floor installation, there are USB interface, 4*4 matrix keyboard, laser probe, 5 groups of charactrons (4 of 3 charactrons of 6 charactrons of pendulum length, pendulum, time 7 charactrons, cycle 5 charactrons, gravity acceleration value).
Single pendulum assembly consists of base, symmetrical expression triangular supports, cycloid, swing ball, spirit-leveling instrument.Base is as supporting bracket and cover circuit board, and spirit-leveling instrument and horizon adjustable screw are housed simultaneously.Symmetrical expression triangular supports is to be connected and composed by the cross bar at top by the support of two groups of symmetries, specifically wherein a pack support by a trapezoidal plate as back up pad perpendicular to base, adopt in addition a triangular plate to form perpendicular to base and perpendicular to back up pad as stiffening plate.The angle that plays pendulum for the ease of experiment swing ball has been carved with swinging on the trapezoidal plate of symmetrical expression triangular supports.On the cross bar of symmetrical expression triangular supports, there is the degree of tightness pressing plate of adjusting by screw, fixing cycloid, cycloid hangs down, and end has swing ball.Swing ball is designed with Liang Ge center and has female spiral shell, and the symmetrical hemisphere of fluted radius, and reeded hollow public spiral shell, install to public spiral shell by the bead of cycloid end, is screwed into symmetrical hemisphere composition swing ball.
Whole experiment instrument can connect by USB extended line the USB interface of computer, the power adapter device power supply of 5V for power acquisition.
The beneficial effects of the utility model are that employing coding laser probe, realizes anti-strong jamming; By the more convenient realization of USB interface and at present conventional computer real-time Communication for Power; Have self-defined pendulum length, the inferior input of pendulum, replaceable swing ball, improves the flexibility ratio of experiment; Symmetrical expression triangular supports can improve the stability of experiment instrument, thereby improves the precision of experimental data; With compunlcation, can realize in computer end input and show data, improve the convenience of teaching demonstration.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described further
Fig. 1 is circuit diagram of the present utility model
Fig. 2 is the utility model example structure composition diagram
Fig. 3 is cycloid, the swing ball cut-away view of Fig. 2
In figure 1, laser probe, 2, input keyboard, 3, USB interface, 4, symmetrical expression triangular supports, 5, cross bar, 6, swing rope, 7, swing ball, 8, hollow public spiral shell, 9, starting point angle carve measuring device, 10, power switch, 11, show charactron, 12, spirit-leveling instrument, 13, base, 14, power interface, 15, horizon adjustable screw.
Embodiment
In Fig. 1 institute example embodiment, single-chip microcomputer STC12C5A60S2, digital pipe display circuit, Laser emission receiving circuit, keyboard circuit, the observation bead of usb circuit composition, timing, counting, input show and USB connects compunlcation control system.(1) laser probe, photoelectric commutator is measured: adopt modulator tube as laser code, receiving tube is as decoding output signal.(2) input keyboard, 0 ~ 9 numerical value input keyboard, determines key, and cancel key above moves and moves down key, and (3) USB interface connects computer USB interface.Software adopts modular design, point master routine, and interrupt routine, judges whether to connect computer after master routine initialization, if do not connect computer, call and show charactron module, keyboard scan load module.If connected computer, call and read computer input parameter module.Master routine obtains after parameter, carries out charactron demonstration, with dataphone.Interrupt routine is responsible for counting, and right of priority is the highest.
In embodiment illustrated in fig. 2, symmetrical expression triangular supports (4) is comprised of two groups of identical assemblies and cross bar, wherein one group of assembly is that 10mm is thick, 65cm is high, upper terraced 25cm, the trapezoidal acrylic board of descending stair 40cm as back up pad perpendicular to base (13), the three limit length of sides that 10mm is thick be in addition the triangle acrylic board of 65cm, 20cm, 68cm as stiffening plate perpendicular to base (13) simultaneously perpendicular to back up pad; Other one group is arranged on the other one end apart from 13cm in symmetrical expression mode, and long by two groups of assembly tops is 13.8cm, and the cylindrical crossbar (5) that radius is 10mm connects into symmetrical formula triangular supports (4); It is upper that laser probe (1) is installed symmetrical expression triangular supports (4), apart from base plate (13) 5mm, comprises transmitting probe and receiving transducer; Swing rope (6) is by a cord, and end is vertically hung radius 2mm thermosetting plastics bead composition, and swing ball (7) hangs on the end of swing rope (6); Swing ball (7) is comprised of two parts: two radius 1cm also have the hemisphere of radius 0.5mm groove, the hollow public spiral shell (8) of long 5mm radius 4mm; Starting point angle is carved measuring device (9) part in the back up pad of symmetrical expression triangular supports (4), take cross bar contact point as the center of circle; Input keyboard (2), power switch (10), show charactron (11), that spirit-leveling instrument (12) is distributed in 10mm is thick, 53cm is long, on the wide acrylic material base (13) of 40cm; 5V power interface (14), USB interface (3), horizon adjustable screw (15) are distributed in the bottom of base (13).
Operation steps:
1, use the good pendulum length of ruler amount, swing rope is hung on to cross bar place, choose the swing ball needing and twist by screw thread, be contained in swing rope end;
2, regulate the three pieces of horizontal screws in bottom, make the bubble of spirit-leveling instrument be positioned at the central, circular central point of spirit-leveling instrument;
3, connect with the mains, opening switch (receiving computer USB interface by USB extended line as need connect computer), inputs pendulum length, pendulum (if connect computer by keyboard, input on computers pendulum length, pendulum), remove swing ball to required angle, by determining button, unclamp bead;
4, wait for that experiment is complete, record data.
Claims (2)
1. microcomputer pendulum experimental instrument, it is characterized in that it by base, be arranged on the symmetrical expression triangular supports on base and hang over the swing ball module composition on symmetrical expression triangular supports cross bar, by being arranged on laser probe in symmetrical expression triangular supports, connect single-chip microcomputer, keyboard, USB interface and the digital display tube composition on main control board; Wherein symmetrical expression triangular supports is to be connected and composed by the cross bar at top by two groups of the same bracing frames, specifically wherein one group of bracing frame by a trapezoidal plate as back up pad perpendicular to base, adopt in addition a triangular plate to form perpendicular to base and perpendicular to back up pad as stiffening plate; And swing ball assembly is wherein comprised of swing ball and cycloid, between swing ball and cycloid, adopt design for disassembly, swing ball is comprised of symmetrical hemisphere, and center has female spiral shell, groove radius, by the hollow public spiral shell of groove, links together; Cycloid is that end is hung bead, can pack in hollow public spiral shell.
2. microcomputer pendulum experimental instrument according to claim 1, is characterized in that having the USB interface that can directly connect with computer, and can input on computers and show experimental data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320238528.3U CN203588521U (en) | 2013-05-07 | 2013-05-07 | A microcomputer simple pendulum experimental instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320238528.3U CN203588521U (en) | 2013-05-07 | 2013-05-07 | A microcomputer simple pendulum experimental instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203588521U true CN203588521U (en) | 2014-05-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320238528.3U Expired - Fee Related CN203588521U (en) | 2013-05-07 | 2013-05-07 | A microcomputer simple pendulum experimental instrument |
Country Status (1)
| Country | Link |
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| CN (1) | CN203588521U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107247009A (en) * | 2017-06-16 | 2017-10-13 | 内蒙古科技大学 | A kind of pipe clamp photoelectricity door determines coefficient of viscosity experiment instrument |
| CN108172078A (en) * | 2018-02-08 | 2018-06-15 | 缪庚平 | A kind of resonance demonstration instrument device |
-
2013
- 2013-05-07 CN CN201320238528.3U patent/CN203588521U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107247009A (en) * | 2017-06-16 | 2017-10-13 | 内蒙古科技大学 | A kind of pipe clamp photoelectricity door determines coefficient of viscosity experiment instrument |
| CN108172078A (en) * | 2018-02-08 | 2018-06-15 | 缪庚平 | A kind of resonance demonstration instrument device |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140507 Termination date: 20160507 |