CN207558259U - High-precision remote control Simple Pendulum Cycle Measurement Instrument - Google Patents

Abstract

The utility model discloses a kind of high-precisions to be remotely controlled Simple Pendulum Cycle Measurement Instrument, including single pendulum ball, further include single pendulum frame, pedestal box body, the single pendulum frame is fixed on pedestal box body, the single pendulum frame includes two vertical racks, a piece horizon bar, the horizon bar both ends are fixed on vertical rack, the single pendulum ball is hung on horizon bar, electronic stopclock is additionally provided on the pedestal box body, digital counting device, laser emitter, laser pickoff, the laser emitter, laser pickoff is equipped with single pendulum ball, the pedestal tray interior is equipped with control circuit board, the electronic stopclock, digital counting device, laser emitter, laser pickoff is connect with control circuit board, the control circuit board is equipped with the wireless communication module that can be connect with remote controler.The utility model is simple in structure, easy to use, can count automatically, without error, can be remotely controlled, and is suitble to class demonstration.

Description

High-precision remote control Simple Pendulum Cycle Measurement Instrument

Technical field

The utility model is related to impart knowledge to students that instrument and equipment technical field more particularly to a kind of high-precision remote control period of single pendulum is used to survey Measure instrument.

Background technology

In existing teaching and experiment equipment, the period for measuring single pendulum substantially uses：Single pendulum is allowed to swing certain number to reach After single pendulum is stablized, start to write down number of oscillations, while with timing is carried out manually with memory number counting method, determine single pendulum week in this way Phase；Because there are many number that single pendulum is swung, start timing with terminating timing by manual operation, so measuring the vibration period of single pendulum There are Railway Projects：1st, it is oral it is several need it is quite wholwe-hearted, it is easy to there is the mistake of number number, cause experimental result not just Really；2nd, stopwatch starts timing with terminating timing by manual operation, can generate artificial error；When the 3rd, measuring period institute's number number Between it is too long, be not suitable for retest；4th, eyes are susceptible to fatigue in measurement process, very high to the brains energy requirement of people.

Invention content

The utility model is artificial number number to be needed to measure in order to solve the existing teaching and experiment equipment for measuring period of single pendulum, Lead to human error and the problem of experimenter is easily tired, provide it is a kind of simple in structure, it is easy to use, can count, not have automatically There is error, the high-precision remote control Simple Pendulum Cycle Measurement Instrument that can be remotely controlled.

To achieve these goals, the utility model uses following technical scheme, and high-precision is remotely controlled Simple Pendulum Cycle Measurement Instrument, Including single pendulum ball, single pendulum frame, pedestal box body are further included, the single pendulum frame is fixed on pedestal box body, and the single pendulum frame includes Two vertical racks, a horizon bar, the horizon bar both ends are fixed on vertical rack, and the single pendulum ball is hung in water On flat bar, electronic stopclock, digital counting device, laser emitter, laser pickoff are additionally provided on the pedestal box body, it is described Laser emitter, laser pickoff and single pendulum ball are equipped with, and the pedestal tray interior is equipped with control circuit board, described Electronic stopclock, digital counting device, laser emitter, laser pickoff are connect with control circuit board, the control circuit board Equipped with the wireless communication module that can be connect with remote controler.

Preferably, the vertical rack supplies the fixed mounting hole of horizon bar equipped with multipair.

Preferably, the vertical rack is angle bar shape, the laser emitter, laser pickoff are respectively arranged on perpendicular Straight bracket two bottom sides, the vertical rack are equipped with the through-hole for laser light.

Preferably, the vertical rack lateral surface is equipped with graduated scale.

This programme is teaching and experiment equipment, is a kind of instrument for measuring period of single pendulum, single pendulum number of oscillations, single pendulum length； To the number of oscillations of single pendulum (number numbers or counting) using laser-correlation sensor, when cutting off laser beam during single pendulum spherical pendulum moves It is automatic as needed to count, and directly displayed with number；Timing uses electronic stopclock, and the timing of stopwatch starts to stop not with timing It is to be controlled by people, but laser beam moment is cut off by swing ball as needed and automatically begins to timing or result timing, improves timing Accuracy；The length of single pendulum is to be arranged on single pendulum vertical rack directly to read on stent using graduated scale, saves and uses ruler Son measures pendulum length.

Compared with prior art, this programme measures period of single pendulum and only measures once, and precision is signa；For damping The quick of period of single pendulum under environment, when amplitude of oscillation variation measures offer condition；Can fast verification cycloid length, gravity add The relationship of speed and period of single pendulum, particularly suitable class demonstration teaching.

Therefore, the utility model has the advantages that：(1) it is simple in structure, it is easy to use；(2) it can count, not have automatically There is error；(3) it can be remotely controlled, be suitble to class demonstration.

Description of the drawings

Fig. 1 is a kind of structure diagram of the utility model.

Fig. 2 is the vertical view of Fig. 1.

Fig. 3 is the control circuit schematic diagram of the utility model.

Fig. 4 is the remote control circuit schematic diagram of the utility model.

In figure：1st, single pendulum ball 2, single pendulum frame 3, pedestal box body 4, vertical rack

5th, horizon bar 6, electronic stopclock 7, digital counting device 8, laser emitter

9th, laser pickoff 10, mounting hole 11, graduated scale.

Specific embodiment

The utility model is further described below in conjunction with the accompanying drawings.

As Figure 1-Figure 4, high-precision remote control Simple Pendulum Cycle Measurement Instrument, including single pendulum ball 1, further includes single pendulum frame 2, pedestal Box body 3, single pendulum frame 2 are fixed on pedestal box body 3, and single pendulum frame 2 includes two vertical racks, 4, horizon bars 5,5 liang of horizon bar End is fixed on vertical rack 4, and single pendulum ball 1 is hung on horizon bar 5, and electronic stopclock 6, digital meter are additionally provided on pedestal box body 3 Number device 7, laser emitter 8, laser pickoff 9, laser emitter 8, laser pickoff 8 and single pendulum ball 1 are equipped with, base box Body 3 is internally provided with control circuit board, and electronic stopclock 6, digital counting device 7, laser emitter 8, laser pickoff 9 are electric with control Road plate connection, control circuit board are equipped with the wireless communication module that can be connect with remote controler；

Vertical rack 4 is equipped with multipair for the fixed mounting hole 10 of horizon bar；Vertical rack 4 be angle bar shape, laser emitter 8th, laser pickoff 9 is respectively arranged on 4 two bottom sides of vertical rack, and vertical rack 4 is equipped with the through-hole for laser light；Vertical rack 4 lateral surfaces are equipped with graduated scale 11.

Digital counting device 7 often counts 2 times as a period, counts and starts or terminate the switch K controlled by relay₁It determines, this The switch K of the relay control of utility model setting₁Series laser sensor is exported between counter signals input, K₁It closes (this circuit is low level) counter normally connects or connects signal and normally counts, K₁Cut-off signal stops counting.K₁When closing Meet low level pulse signal, single pendulum normally swings hour counter and normally counts, while also carries out condition to timing.

Specifically used process is to press remote controler, A point high level, IC₃The optocoupler effect of PC817 makes IC₁、IC₂Triggering electricity Road starts, J₁J₂It is attracted, at this moment LED₁、LED₂It all lights, K₁It is attracted digital counting device 7 normally to count, K₂Also it is attracted optocoupler IC₄Work Make, electronic stopclock 6 starts timing at this time.

After digital counting device 7 starts counting up, K₁Keep attracting state constant, the swing of single pendulum ball 1 continues to count, and passes through K₁ 7 control terminal negative level of digital counting device afterwards is input to IC₁- b makes IC₁- d low levels, R₁C₁Time-lag action, J₂It disconnects, J₂Relay Device is that single pendulum needs just to be powered once during timing, at this moment sees LED₁Bright LED₂It does not work, it is such to act on suitable electronic stopclock 6 On start button only by primary.

If stop counting timing, it is seen that single pendulum ball 1 presses remote controler knob when just having passed through equilbrium position, at this moment electronics Circuit is ready to stop counting timing, and counting timing is just automatically stopped when single pendulum ball 1 arrives again at equilbrium position.So Measure single pendulum a cycle, it is seen that Counter Value is 2 knobs for pressing remote controler, when the value of digital counting device 7 is shown as 3 With regard to stopping counting timing, the shown time is exactly the time of single pendulum a cycle.

Stop counting the operation principle of timing：When pressing remote controler knob for the second time, K₃、K₄It is attracted, does not at this moment count Signal IC₂- b is still high level, and when single pendulum ball 1 passes through equilbrium position, laser sensor generates count signal, IC₂- b is immediately Low level is converted by high level, makes triode V₂Cut-off, relay J₁Turn off K₁, the stopping counting of digital counting device 7.Due to R₅C₂'s Time-lag action ensures the final stage time with the reliability of count signal, K₄K while actuation₃Also it is attracted, is at this moment IC₄Action Preparatory condition, when 7 input terminal of digital counting device becomes low level, optocoupler work is primary, and electronic stopclock 6 stops knob and presses one Secondary, electronic stopclock 6 stops timing.

The time of electronic stopclock 6 is t, and digital counting device 7 is counted as n, the period of single pendulum

The utility model is suitble to senior middle school physics teaching Demonstrating, and the period in high school student's experiment and scientific research surveys Amount.

Claims (4)

1. a kind of high-precision is remotely controlled Simple Pendulum Cycle Measurement Instrument, including single pendulum ball, which is characterized in that further include single pendulum frame, base box Body, the single pendulum frame are fixed on pedestal box body, and the single pendulum frame includes two vertical racks, a horizon bar, described Horizon bar both ends are fixed on vertical rack, and the single pendulum ball is hung on horizon bar, is additionally provided on the pedestal box body Electronic stopclock, digital counting device, laser emitter, laser pickoff, the laser emitter, laser pickoff and single pendulum ball It is equipped with, the pedestal tray interior is equipped with control circuit board, the electronic stopclock, digital counting device, Laser emission Device, laser pickoff are connect with control circuit board, and the control circuit board is equipped with the wireless communication that can be connect with remote controler Module.

2. high-precision according to claim 1 is remotely controlled Simple Pendulum Cycle Measurement Instrument, it is characterized in that, the vertical rack is equipped with It is multipair to supply the fixed mounting hole of horizon bar.

3. high-precision according to claim 1 or 2 is remotely controlled Simple Pendulum Cycle Measurement Instrument, it is characterized in that, the vertical rack For angle bar shape, the laser emitter, laser pickoff are respectively arranged on vertical rack two bottom sides, and the vertical rack is equipped with For the through-hole of laser light.

4. high-precision according to claim 3 is remotely controlled Simple Pendulum Cycle Measurement Instrument, it is characterized in that, on the outside of the vertical rack Face is equipped with graduated scale.