CN206040002U - Centripetal force experiment teaching demonstration instrument - Google Patents
Centripetal force experiment teaching demonstration instrument Download PDFInfo
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- CN206040002U CN206040002U CN201620645306.7U CN201620645306U CN206040002U CN 206040002 U CN206040002 U CN 206040002U CN 201620645306 U CN201620645306 U CN 201620645306U CN 206040002 U CN206040002 U CN 206040002U
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- centripetal force
- rotating disk
- guide rail
- bottom plate
- pedestal bottom
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Abstract
The utility model provides a centripetal force experiment teaching demonstration instrument relates to the teaching aid field, including the pedestal bottom plate, install in servo motor, the carousel of pedestal bottom plate and connect in a set of centrifugal guide rail of carousel, the carousel connect and to join in marriage the output shaft axle head of adorning in servo motor, still include the the control unit and the man -machine interface that have a bluetooth receiver that join in marriage the dress on the demonstration operation panel of pedestal bottom plate front end, the position department that corresponds centrifugal guide rail on the carousel joins in marriage and is equipped with force sensor, the ware is sent to the bluetooth, install the light screen on servo motor's output shaft, join in marriage with light screen corresponding position department on the pedestal bottom plate and adorn a set of correlation photoelectric switch, it is simple and direct to have the structure, produce with low costsly easily, intelligent degree of control is high, it is strong to demonstrate interest directly perceived, the outstanding advantage that the high teaching effects of experimental efficiency is good.
Description
Technical field
The utility model is related to a kind of centripetal force experiment teaching demonstration instrument, belongs to the technical field of instruments used for education, especially fits
Conjunction is used as experimental demonstration on physics teaching classroom, and it can help the centripetal force phenomenon that student's correct understanding particle is circled
And rule.
Background technology
It is understood that：Object is circled should possess two necessary conditions：1.. it has initial velocity；2.. it is subject to one
Size is constant, the direction active force for pointing to the center of circle vertical with speed（This active force for pointing to the center of circle is centripetal force）.It is even
Fast circular motion be exactly particle within equal time by a kind of simplest circular motion of equal arc length, object is made even
During fast circular motion, although its velocity magnitude（That is speed）Be it is constant, but the direction moment of speed all change, enter one
Step ground says, its centripetal acceleration size be it is constant, but the direction moment of centripetal acceleration all change.I other words, it is even
Fast circular motion is a kind of variable accelerated motion for studying carefully its essence, the change speed that centripetal force exactly object is subject to when circling
A kind of active force in sensing center of circle in degree direction, in physics teaching in secondary school outline, centripetal force formulae express is：
In above-mentioned formula：F is centripetal force, and quality of the m for object, a are centripetal acceleration, and v is the speed of circular motion,
Radiuses of the R for circular motion, π are pi, and T is the cycle of circular motion.
The universal Gongwei in physics teaching in secondary school practice：It is both focal points with regard to the chapters and sections of circular motion, is again
One teaching difficulty, teacher are difficult to explain description clearly on classroom " centripetal suffered by the object for circling
Active force ", student also be difficult to understanding perceive " the centripetal force phenomenon present in circular motion process ", it is more difficult to profound understanding to
The knowledge intension of mental and physical efforts physics law.Studying carefully its main cause is：At present, in existing physics teaching in secondary school also do not have a kind of energy straight
The experiment teaching aid for showing " there is centripetal force phenomenon when object is circled " is seen, does not also have to quantify to show " centripetal force and matter
The instruments used for education of amount, speed and radius related law ".This becomes a bottleneck of restriction physics teaching in secondary school quality, this
It is long campaigns physics teaching researcher and teaching aid manufacturing enterprise is intended to a Teaching subject solving, this practicality always
It is new to be just intended to solve this problem.
The content of the invention
The purpose of this utility model is directed to one kind and is mutually tied with pulling force sensor technology using Bluetooth communication intellectual technology
Conjunction forms the centripetal force experiment teaching demonstration instrument of new structure, and it can intuitively show that the centripetal force that object is circled is existing
As the knowledge intension of student's correct understanding centripetal force physics law can be helped, and have substantially effect to improving physics teaching in secondary school quality
Really.
The purpose of this utility model is realized according to following technical scheme：
A kind of centripetal force experiment teaching demonstration instrument, including pedestal bottom plate, the servomotor for being installed on pedestal bottom plate, rotating disk and
One group of centrifugation guide rail of rotating disk is connected to, described rotating disk connection is fitted to the output shaft end of servomotor, it is characterised in that：
Also including the control unit with Bluetooth Receiver and human-computer interaction interface being equipped with the demonstration console of pedestal bottom plate front end,
On rotating disk, correspondence is centrifuged at the position of guide rail and is fitted with pulling force sensor, bluetooth transmitters, on the output shaft of servomotor
Shadow shield is installed, and one group is equipped with pedestal bottom plate at the position corresponding with shadow shield to penetrating optoelectronic switch.It is right on rotating disk
Answer, steel ball of the quality for m is positioned over into centrifugation guide rail
Inside radius sends instruction by control unit and starts servo electricity for being fixed at the position of R and with drawstring and to mount on pulling force sensor
Machine is simultaneously rotated by given pace v by one group of centrifugation guide rail of driven by rotary disc, and steel ball can make circumference as centrifugation guide rail is rotated together
Motion, drawstring are the centripetal force that it circles to the pulling force of steel ball, and at the same time, drawstring also can be applied to pulling force sensor
With identical pulling force（It is numerically equal with centripetal force）, then the pulling force that pulling force sensor is sensed detection by bluetooth transmitters
Signal is sent to control unit, and the photoelectricity cycle T signal of detection is delivered to control unit, Jing control units to penetrating optoelectronic switch
Calculating can show the numerical value of centripetal force on human-computer interaction interface after processing.
Described control unit also includes control mainboard, servo controller, data processor, input/output interface and electricity
Source.The detection data that Jing Bluetooth Receivers are received enters data processor, data processor logarithm by input/output interface
According to processed and to human-computer interaction interface export operation result, by operate human-computer interaction interface input instruction entered mainboard
On central processing unit for processing, control instruction is sent to servo controller by input/output interface, servo controller is controlled again
Servomotor action processed.
Described human-computer interaction interface includes keyboard and LED display.
Described rotating disk is fixedly connected the output shaft end for being installed on servomotor by dish axle.
The interior sidewall surface delineation of the centrifugation guide rail is provided with radius sign chi.
The outer end of the centrifugation guide rail is provided with baffle plate.
The quantity of the centrifugation guide rail is four and is fixedly connected by symmetric position and is installed on the rotating disk.
Speed governing knob is fitted with the demonstration console and resets button.
The utility model has the advantage that：
First, a kind of centripetal force experiment teaching demonstration instrument that the utility model is provided, the placements drawing in one group of centrifugation guide rail
Rope mounts the steel ball in pulling force sensor, and pulling force signal when circled by steel ball sends single to control
Unit, by penetrating the photoelectricity cycle T signal input control unit that optoelectronic switch will be detected, you can shows in the LED of human-computer interaction interface
Show screen display centripetal force numerical value, it can press " different quality " or " different radii " or " different quality, different radii " simultaneously
Mode carries out multigroup experimental demonstration teaching, and experimental data has distinct control comparativity, can intuitively demonstrate " centripetal force physics
Phenomenon and rule ", improve classroom instruction conventional efficient, and this centripetal force experiment teaching demonstration instrument have structure it is simple and direct,
Produce the protrusion that easy low cost, intelligence degree are high, demonstrating visual is interesting by force, experimental data is accurate and teaching efficiency is good excellent
Point.
2nd, a kind of centripetal force experiment teaching demonstration instrument that the utility model is provided, control unit include servo controller, number
According to processor, input/output interface and power supply, it is easy to adjust control rotating speed, calculates with processing data in time and transmit control signal
And operation result, and structure composition is simple and clear, realizes various functions using the conventional equipment of prior art, easily realizes.
3rd, a kind of centripetal force experiment teaching demonstration instrument that the utility model is provided, human-computer interaction interface include keyboard and LED
Display screen, is convenient to rapidly input the operation of experimental data when classroom instruction is demonstrated；Rotating disk is fixedly connected by dish axle and is installed on
The output shaft end of servomotor, is convenient to the operation for being fixedly connected installation and removal maintenance activity of rotating disk；Centrifugation guide rail
Interior sidewall surface delineation is provided with radius sign chi, it is convenient and swift be accurately read that steel ball is circled in centrifugation guide rail half
Footpath data；The purpose for arranging baffle plate is torn or projects the accident hurted sb.'s feelings when steel ball breaks off relations to effectively prevent drawstring,
Ensure the safety of classroom instruction experiment；Four centrifugation guide rails are fixedly connected by symmetric position and are installed on rotating disk, can be carried out simultaneously
The experimental demonstration teaching of four groups " different qualities " or " different radii " or " different quality and different radii ", not only increases classroom
The conventional efficient of teaching, moreover it is possible to make four groups of experimental datas that there is control comparativity well；Speed governing is fitted with demonstration console
Knob, clearing button, can easily be adjusted rotating speed and the operation for resetting.
Description of the drawings
Fig. 1 is structural representation of the present utility model, and also make an abstract accompanying drawing.
Fig. 2 is the structural representation that guide rail is centrifuged（Amplify）, it is illustrated in the interior sidewall surface delineation radius sign of centrifugation guide rail
Chi and the structural representation in outer end setting baffle plate.
Fig. 3 is the A A views of Fig. 1（Amplify）, it is illustrated in centrifugation guide rail and places the experiment schematic diagram of steel ball.
Fig. 4 is the top view of Fig. 1, be illustrated on demonstration console arrange control unit, speed governing knob, LED display and
The arrangement schematic diagram of keyboard.
Fig. 5 is the operation principle module frame chart of control unit.
Description of symbols in accompanying drawing：
1 is pedestal bottom plate, and 2 is steel ball, and 3 are centrifugation guide rail, and 4 is drawstring, and 5 is pulling force sensor, and 6 is bluetooth transmitters, 7
For rotating disk, 8 is dish axle, and 9 is clamp nut, and 10 is shadow shield, and 11 is that, to penetrating optoelectronic switch, 12 is cable, and 13 is servomotor,
14 is screw, and 15 is that radius indicates chi, and 16 is baffle plate, and 17 is Bluetooth Receiver, and 18 is control unit, and 19 is keyboard, and 20 is clear
Zero button, 21 is attaching plug, and 22 are switch, and 23 is demonstration console, and 24 is speed governing knob, and 25 is LED display.
Specific embodiment
Below in conjunction with the accompanying drawings by several specific embodiments further illustrating the technical solution of the utility model, need
It is bright, realize that the technical scheme of the utility model purpose includes but is not limited to following specific embodiment.
Embodiment 1
Such as Fig. 1 to Fig. 5, a kind of centripetal force experiment teaching demonstration instrument including pedestal bottom plate 1, are installed on watching for pedestal bottom plate 1
Take motor 13, rotating disk 7 and be connected to one group of centrifugation guide rail 3 of rotating disk 7, the described connection of rotating disk 7 is fitted to servomotor 13
Output shaft end, it is characterised in that：Also including 1 front end of pedestal bottom plate demonstration console 23 on be equipped with Bluetooth Receiver
17 control unit 18 and human-computer interaction interface, be fitted with the position of correspondence centrifugation guide rail 3 on the rotating disk 7 pulling force sensor 5,
Bluetooth transmitters 6, install shadow shield 10 on the output shaft of servomotor 13, corresponding with shadow shield 10 on pedestal bottom plate 1
Position at be equipped with one group to penetrating optoelectronic switch 11.
This is most basic embodiment of the present utility model.Placement drawstring is mounted in pulling force in one group of centrifugation guide rail 3
The steel ball of sensor 5, pulling force signal when circled by steel ball are sent to control unit 18, by right
Penetrate the photoelectricity cycle T signal input control unit 18 that optoelectronic switch 11 will be detected, you can show centripetal on human-computer interaction interface
Power numerical value, it can carry out multigroup reality simultaneously in the way of " different quality " or " different radii " or " different quality, different radii "
Teaching demonstration is tested, experimental data has distinct control comparativity, can intuitively demonstrate " centripetal force physical phenomenon and rule ", carry
The conventional efficient of high classroom instruction.
Embodiment 2
Such as Fig. 1 to Fig. 5, a kind of centripetal force experiment teaching demonstration instrument including pedestal bottom plate 1, are installed on watching for pedestal bottom plate 1
Take motor 13, rotating disk 7 and be connected to one group of centrifugation guide rail 3 of rotating disk 7, the described connection of rotating disk 7 is fitted to servomotor 13
Output shaft end, it is characterised in that：Also including 1 front end of pedestal bottom plate demonstration console 23 on be equipped with Bluetooth Receiver
17 control unit 18 and human-computer interaction interface, be fitted with the position of correspondence centrifugation guide rail 3 on the rotating disk 7 pulling force sensor 5,
Bluetooth transmitters 6, install shadow shield 10 on the output shaft of servomotor 13, corresponding with shadow shield 10 on pedestal bottom plate 1
Position at be equipped with one group to penetrating optoelectronic switch 11.
Described control unit 18 also includes control mainboard, servo controller, data processor, input/output interface and electricity
Source.
This is a kind of preferred embodiment of the present utility model.In one group of centrifugation guide rail 3 placement drawstring mount in
The steel ball of pulling force sensor 5, pulling force signal when circled by steel ball are sent to control unit 18,
By to penetrating the photoelectricity cycle T signal input control unit 18 that optoelectronic switch 11 will be detected, you can show on human-computer interaction interface
Centripetal force numerical value, it can carry out many simultaneously in the way of " different quality " or " different radii " or " different quality, different radii "
Group experimental demonstration teaching, experimental data have distinct control comparativity, can intuitively demonstrate " centripetal force physical phenomenon and rule
Rule ", the conventional efficient for improving classroom instruction；Control unit 18 include servo controller, data processor, input/output interface and
Power supply, is easy to adjust control rotating speed, calculates with processing data in time and transmit control signal and operation result, and structure composition
Concisely, the equipment commonly used using prior art is easily realized realizing various functions.
Embodiment 3
Such as Fig. 1 to Fig. 5, a kind of centripetal force experiment teaching demonstration instrument including pedestal bottom plate 1, are installed on watching for pedestal bottom plate 1
Take motor 13, rotating disk 7 and be connected to one group of centrifugation guide rail 3 of rotating disk 7, the described connection of rotating disk 7 is fitted to servomotor 13
Output shaft end, it is characterised in that：Also including 1 front end of pedestal bottom plate demonstration console 23 on be equipped with Bluetooth Receiver
17 control unit 18 and human-computer interaction interface, be fitted with the position of correspondence centrifugation guide rail 3 on the rotating disk 7 pulling force sensor 5,
Bluetooth transmitters 6, install shadow shield 10 on the output shaft of servomotor 13, corresponding with shadow shield 10 on pedestal bottom plate 1
Position at be equipped with one group to penetrating optoelectronic switch 11.
Described control unit 18 includes control mainboard, servo controller, data processor, input/output interface and electricity
Source.
Described human-computer interaction interface includes keyboard 19 and LED display 25.
This is a kind of preferred embodiment of the present utility model.In one group of centrifugation guide rail 3 placement drawstring mount in
The steel ball of pulling force sensor 5, pulling force signal when circled by steel ball are sent to control unit 18,
By to penetrating the photoelectricity cycle T signal input control unit 18 that optoelectronic switch 11 will be detected, you can show on human-computer interaction interface
Centripetal force numerical value, it can carry out many simultaneously in the way of " different quality " or " different radii " or " different quality, different radii "
Group experimental demonstration teaching, experimental data have distinct control comparativity, can intuitively demonstrate " centripetal force physical phenomenon and rule
Rule ", the conventional efficient for improving classroom instruction；Control unit 18 include servo controller, data processor, input/output interface and
Power supply, is easy to adjust control rotating speed, calculates with processing data in time and transmit control signal and operation result, and structure composition
Concisely, the equipment commonly used using prior art is easily realized realizing various functions；Human-computer interaction interface includes 19 He of keyboard
LED display 25, is convenient to rapidly input the operation of experimental data when classroom instruction is demonstrated.
Embodiment 4
Such as Fig. 1 to Fig. 5, a kind of centripetal force experiment teaching demonstration instrument including pedestal bottom plate 1, are installed on watching for pedestal bottom plate 1
Take motor 13, rotating disk 7 and be connected to one group of centrifugation guide rail 3 of rotating disk 7, the described connection of rotating disk 7 is fitted to servomotor 13
Output shaft end, it is characterised in that：Also including 1 front end of pedestal bottom plate demonstration console 23 on be equipped with Bluetooth Receiver
17 control unit 18 and human-computer interaction interface, be fitted with the position of correspondence centrifugation guide rail 3 on the rotating disk 7 pulling force sensor 5,
Bluetooth transmitters 6, install shadow shield 10 on the output shaft of servomotor 13, corresponding with shadow shield 10 on pedestal bottom plate 1
Position at be equipped with one group to penetrating optoelectronic switch 11.
Described control unit 18 includes control mainboard, servo controller, data processor, input/output interface and electricity
Source.
Described human-computer interaction interface includes keyboard 19 and LED display 25.
Described rotating disk 7 is fixedly connected the output shaft end for being installed on servomotor 13 by dish axle 8.
This is a kind of preferred embodiment of the present utility model.In one group of centrifugation guide rail 3 placement drawstring mount in
The steel ball of pulling force sensor 5, pulling force signal when circled by steel ball are sent to control unit 18,
By to penetrating the photoelectricity cycle T signal input control unit 18 that optoelectronic switch 11 will be detected, you can show on human-computer interaction interface
Centripetal force numerical value, it can carry out many simultaneously in the way of " different quality " or " different radii " or " different quality, different radii "
Group experimental demonstration teaching, experimental data have distinct control comparativity, can intuitively demonstrate " centripetal force physical phenomenon and rule
Rule ", the conventional efficient for improving classroom instruction；Control unit 18 include servo controller, data processor, input/output interface and
Power supply, is easy to adjust control rotating speed, calculates with processing data in time and transmit control signal and operation result, and structure composition
Concisely, the equipment commonly used using prior art is easily realized realizing various functions；Human-computer interaction interface includes 19 He of keyboard
LED display 25, is convenient to rapidly input the operation of experimental data when classroom instruction is demonstrated；Rotating disk 7 is fixedly connected by dish axle 8
The output shaft end of servomotor 13 is installed on, the operation for being fixedly connected installation and removal maintenance activity of rotating disk is convenient to.
Embodiment 5
A kind of centripetal force experiment teaching demonstration instrument, including pedestal bottom plate 1, is installed on the servomotor 13 of pedestal bottom plate 1, turns
Disk 7 and one group of centrifugation guide rail 3 for being connected to rotating disk 7, the described connection of rotating disk 7 are fitted to the output shaft end of servomotor 13,
It is characterized in that：Also including the control list with Bluetooth Receiver 17 being equipped with the demonstration console 23 of 1 front end of pedestal bottom plate
Unit 18 and human-computer interaction interface, on rotating disk 7, correspondence is centrifuged at the position of guide rail 3 and is fitted with pulling force sensor 5, bluetooth transmitters
6, shadow shield 10 is installed on the output shaft of servomotor 13, is matched somebody with somebody at the position corresponding with shadow shield 10 on pedestal bottom plate 1
One group is filled to penetrating optoelectronic switch 11.
Described control unit 18 includes control mainboard, servo controller, data processor, input/output interface and electricity
Source.
Described human-computer interaction interface includes keyboard 19 and LED display 25.
Described rotating disk 7 is fixedly connected the output shaft end for being installed on servomotor 13 by dish axle 8.
The interior sidewall surface delineation of the centrifugation guide rail 3 is provided with radius sign chi 15.
This is a kind of preferred embodiment of the present utility model.In one group of centrifugation guide rail 3 placement drawstring mount in
The steel ball of pulling force sensor 5, pulling force signal when circled by steel ball are sent to control unit 18,
By to penetrating the photoelectricity cycle T signal input control unit 18 that optoelectronic switch 11 will be detected, you can show on human-computer interaction interface
Centripetal force numerical value, it can carry out many simultaneously in the way of " different quality " or " different radii " or " different quality, different radii "
Group experimental demonstration teaching, experimental data have distinct control comparativity, can intuitively demonstrate " centripetal force physical phenomenon and rule
Rule ", the conventional efficient for improving classroom instruction；Control unit 18 include servo controller, data processor, input/output interface and
Power supply, is easy to adjust control rotating speed, calculates with processing data in time and transmit control signal and operation result, and structure composition
Concisely, the equipment commonly used using prior art is easily realized realizing various functions；Human-computer interaction interface includes 19 He of keyboard
LED display 25, is convenient to rapidly input the operation of experimental data when classroom instruction is demonstrated；Rotating disk 7 is fixedly connected by dish axle 8
The output shaft end of servomotor 13 is installed on, the operation for being fixedly connected installation and removal maintenance activity of rotating disk is convenient to；From
The interior sidewall surface delineation of heart guide rail 3 is provided with radius sign chi 15, and the convenient and swift steel ball that is accurately read is made in centrifugation guide rail
The radius data of circular motion.
Embodiment 6
Such as Fig. 1 to Fig. 5, a kind of centripetal force experiment teaching demonstration instrument including pedestal bottom plate 1, are installed on watching for pedestal bottom plate 1
Take motor 13, rotating disk 7 and be connected to one group of centrifugation guide rail 3 of rotating disk 7, the described connection of rotating disk 7 is fitted to servomotor 13
Output shaft end, it is characterised in that：Also including 1 front end of pedestal bottom plate demonstration console 23 on be equipped with Bluetooth Receiver
17 control unit 18 and human-computer interaction interface, be fitted with the position of correspondence centrifugation guide rail 3 on the rotating disk 7 pulling force sensor 5,
Bluetooth transmitters 6, install shadow shield 10 on the output shaft of servomotor 13, corresponding with shadow shield 10 on pedestal bottom plate 1
Position at be equipped with one group to penetrating optoelectronic switch 11.
Described control unit 18 includes control mainboard, servo controller, data processor, input/output interface and electricity
Source.
Described human-computer interaction interface includes keyboard 19 and LED display 25.
Described rotating disk 7 is fixedly connected the output shaft end for being installed on servomotor 13 by dish axle 8.
The interior sidewall surface delineation of the centrifugation guide rail 3 is provided with radius sign chi 15.
The outer end of the centrifugation guide rail 3 is provided with baffle plate 16.
This is a kind of preferred embodiment of the present utility model.In one group of centrifugation guide rail 3 placement drawstring mount in
The steel ball of pulling force sensor 5, pulling force signal when circled by steel ball are sent to control unit 18,
By to penetrating the photoelectricity cycle T signal input control unit 18 that optoelectronic switch 11 will be detected, you can show on human-computer interaction interface
Centripetal force numerical value, it can carry out many simultaneously in the way of " different quality " or " different radii " or " different quality, different radii "
Group experimental demonstration teaching, experimental data have distinct control comparativity, can intuitively demonstrate " centripetal force physical phenomenon and rule
Rule ", the conventional efficient for improving classroom instruction；Control unit 18 include servo controller, data processor, input/output interface and
Power supply, is easy to adjust control rotating speed, calculates with processing data in time and transmit control signal and operation result, and structure composition
Concisely, the equipment commonly used using prior art is easily realized realizing various functions；Human-computer interaction interface includes 19 He of keyboard
LED display 25, is convenient to rapidly input the operation of experimental data when classroom instruction is demonstrated；Rotating disk 7 is fixedly connected by dish axle 8
The output shaft end of servomotor 13 is installed on, the operation for being fixedly connected installation and removal maintenance activity of rotating disk is convenient to；From
The interior sidewall surface delineation of heart guide rail 3 is provided with radius sign chi 15, and the convenient and swift steel ball that is accurately read is made in centrifugation guide rail
The radius data of circular motion；Arrange baffle plate 16 purpose be in order to effectively prevent drawstring be torn or steel ball break off relations when penetrate
It has the accident hurted sb.'s feelings, ensures the safety of classroom instruction experiment.
Embodiment 7
Such as Fig. 1 to Fig. 5, a kind of centripetal force experiment teaching demonstration instrument including pedestal bottom plate 1, are installed on watching for pedestal bottom plate 1
Take motor 13, rotating disk 7 and be connected to one group of centrifugation guide rail 3 of rotating disk 7, the described connection of rotating disk 7 is fitted to servomotor 13
Output shaft end, it is characterised in that：Also including 1 front end of pedestal bottom plate demonstration console 23 on be equipped with Bluetooth Receiver
17 control unit 18 and human-computer interaction interface, be fitted with the position of correspondence centrifugation guide rail 3 on the rotating disk 7 pulling force sensor 5,
Bluetooth transmitters 6, install shadow shield 10 on the output shaft of servomotor 13, corresponding with shadow shield 10 on pedestal bottom plate 1
Position at be equipped with one group to penetrating optoelectronic switch 11.
Described control unit 18 includes control mainboard, servo controller, data processor, input/output interface and electricity
Source.
Described human-computer interaction interface includes keyboard 19 and LED display 25.
Described rotating disk 7 is fixedly connected the output shaft end for being installed on servomotor 13 by dish axle 8.
The interior sidewall surface delineation of the centrifugation guide rail 3 is provided with radius sign chi 15.
The outer end of the centrifugation guide rail 3 is provided with baffle plate 16.
The quantity of the centrifugation guide rail 3 is four and is fixedly connected by symmetric position and is installed on the rotating disk 7.
This is a kind of preferred embodiment of the present utility model.In one group of centrifugation guide rail 3 placement drawstring mount in
The steel ball of pulling force sensor 5, pulling force signal when circled by steel ball are sent to control unit 18,
By to penetrating the photoelectricity cycle T signal input control unit 18 that optoelectronic switch 11 will be detected, you can show on human-computer interaction interface
Centripetal force numerical value, it can carry out many simultaneously in the way of " different quality " or " different radii " or " different quality, different radii "
Group experimental demonstration teaching, experimental data have distinct control comparativity, can intuitively demonstrate " centripetal force physical phenomenon and rule
Rule ", the conventional efficient for improving classroom instruction；Control unit 18 include servo controller, data processor, input/output interface and
Power supply, is easy to adjust control rotating speed, calculates with processing data in time and transmit control signal and operation result, and structure composition
Concisely, the equipment commonly used using prior art is easily realized realizing various functions；Human-computer interaction interface includes 19 He of keyboard
LED display 25, is convenient to rapidly input the operation of experimental data when classroom instruction is demonstrated；Rotating disk 7 is fixedly connected by dish axle 8
The output shaft end of servomotor 13 is installed on, the operation for being fixedly connected installation and removal maintenance activity of rotating disk is convenient to；From
The interior sidewall surface delineation of heart guide rail 3 is provided with radius sign chi 15, and the convenient and swift steel ball that is accurately read is made in centrifugation guide rail
The radius data of circular motion；Arrange baffle plate 16 purpose be in order to effectively prevent drawstring be torn or steel ball break off relations when penetrate
It has the accident hurted sb.'s feelings, ensures the safety of classroom instruction experiment；Four centrifugation guide rails 3 are fixedly connected by symmetric position and are installed on rotating disk
On 7, the experimental demonstration teaching of four group " different qualities " or " different radii " or " different quality and different radii " can be carried out simultaneously,
Not only increase the conventional efficient of classroom instruction, moreover it is possible to make four groups of experimental datas that there is control comparativity well.
Embodiment 8
Such as Fig. 1 to Fig. 5, a kind of centripetal force experiment teaching demonstration instrument including pedestal bottom plate 1, are installed on watching for pedestal bottom plate 1
Take motor 13, rotating disk 7 and be connected to one group of centrifugation guide rail 3 of rotating disk 7, the described connection of rotating disk 7 is fitted to servomotor 13
Output shaft end, it is characterised in that：Also including 1 front end of pedestal bottom plate demonstration console 23 on be equipped with Bluetooth Receiver
17 control unit 18 and human-computer interaction interface, be fitted with the position of correspondence centrifugation guide rail 3 on the rotating disk 7 pulling force sensor 5,
Bluetooth transmitters 6, install shadow shield 10 on the output shaft of servomotor 13, corresponding with shadow shield 10 on pedestal bottom plate 1
Position at be equipped with one group to penetrating optoelectronic switch 11.
Described control unit 18 includes control mainboard, servo controller, data processor, input/output interface and electricity
Source.
Described human-computer interaction interface includes keyboard 19 and LED display 25.
Described rotating disk 7 is fixedly connected the output shaft end for being installed on servomotor 13 by dish axle 8.
The interior sidewall surface delineation of the centrifugation guide rail 3 is provided with radius sign chi 15.
The outer end of the centrifugation guide rail 3 is provided with baffle plate 16.
The quantity of the centrifugation guide rail 3 is four and is fixedly connected by symmetric position and is installed on the rotating disk 7.
Speed governing knob 24 is fitted with the demonstration console 23 and resets button 20.
This is a kind of preferred embodiment of the present utility model.In one group of centrifugation guide rail 3 placement drawstring mount in
The steel ball of pulling force sensor 5, pulling force signal when circled by steel ball are sent to control unit 18,
By to penetrating the photoelectricity cycle T signal input control unit 18 that optoelectronic switch 11 will be detected, you can show on human-computer interaction interface
Centripetal force numerical value, it can carry out many simultaneously in the way of " different quality " or " different radii " or " different quality, different radii "
Group experimental demonstration teaching, experimental data have distinct control comparativity, can intuitively demonstrate " centripetal force physical phenomenon and rule
Rule ", the conventional efficient for improving classroom instruction；Control unit 18 include servo controller, data processor, input/output interface and
Power supply, is easy to adjust control rotating speed, calculates with processing data in time and transmit control signal and operation result, and structure composition
Concisely, the equipment commonly used using prior art is easily realized realizing various functions；Human-computer interaction interface includes 19 He of keyboard
LED display 25, is convenient to rapidly input the operation of experimental data when classroom instruction is demonstrated；Rotating disk 7 is fixedly connected by dish axle 8
The output shaft end of servomotor 13 is installed on, the operation for being fixedly connected installation and removal maintenance activity of rotating disk is convenient to；From
The interior sidewall surface delineation of heart guide rail 3 is provided with radius sign chi 15, and the convenient and swift steel ball that is accurately read is made in centrifugation guide rail
The radius data of circular motion；Arrange baffle plate 16 purpose be in order to effectively prevent drawstring be torn or steel ball break off relations when penetrate
It has the accident hurted sb.'s feelings, ensures the safety of classroom instruction experiment；Four centrifugation guide rails 3 are fixedly connected by symmetric position and are installed on rotating disk
On 7, the experimental demonstration teaching of four group " different qualities " or " different radii " or " different quality and different radii " can be carried out simultaneously,
Not only increase the conventional efficient of classroom instruction, moreover it is possible to make four groups of experimental datas that there is control comparativity well；Demonstration operation
Speed governing knob 24 is fitted with platform 23 and button 20 is reset, and can easily be adjusted rotating speed and the operation for resetting.
Embodiment 9
Such as Fig. 1 to Fig. 5, a kind of centripetal force experiment teaching demonstration instrument including pedestal bottom plate 1, are installed on watching for pedestal bottom plate 1
Take motor 13, rotating disk 7 and be connected to one group of centrifugation guide rail 3 of rotating disk 7, the described connection of rotating disk 7 is fitted to servomotor 13
Output shaft end, it is characterised in that：Also including 1 front end of pedestal bottom plate demonstration console 23 on be equipped with Bluetooth Receiver
17 control unit 18 and human-computer interaction interface, be fitted with the position of correspondence centrifugation guide rail 3 on the rotating disk 7 pulling force sensor 5,
Bluetooth transmitters 6, install shadow shield 10 on the output shaft of servomotor 13, corresponding with shadow shield 10 on pedestal bottom plate 1
Position at be equipped with one group to penetrating optoelectronic switch 11.
Described control unit 18 includes control mainboard, servo controller, data processor, input/output interface and electricity
Source, preset centripetal force formula in control unit 18：Calculation procedure.
Described human-computer interaction interface includes keyboard 19 and LED display 25.
Described rotating disk 7 is fixedly connected the output shaft end for being installed on servomotor 13 by dish axle 8.
The interior sidewall surface delineation of the centrifugation guide rail 3 is provided with radius sign chi 15.
The outer end of the centrifugation guide rail 3 is provided with baffle plate 16.
The quantity of the centrifugation guide rail 3 is four and is fixedly connected by symmetric position and is installed on the rotating disk 7.
Speed governing knob 24 is fitted with the demonstration console 23 and resets button 20.
It is to carry out centripetal force experiment teaching demonstration instrument operation as follows：
Firstth, worked out according to syllabus first《Experimental demonstration prospectus》, choose the steel ball 2 of four different qualities and divide
It is not designated as、、、, by quality it is、、、Four steel balls 2 be respectively placed in four centrifugation guide rails 3 and make
Four steel balls 2 are respectively positioned at the position of same radius R, are mounted in corresponding four pulling force sensors 5 respectively with drawstring 4
On.After errorless on inspection, plug in plug 21, presses switch 22 and is powered, after unit to be controlled 18 is initialized, shows in LED
" current date, time " is shown on screen 25, then 19 points four groups of operation keyboard is input into the quality of four steel balls 2 item by item、、、With the numerical value of radius R, that is, complete the preparation of experimental demonstration.
Secondth, experimental demonstration：Speed governing knob 24 is rotated, is sent to servomotor 13 by cable 12 from control unit 18 and is opened
Dynamic instruction, after servomotor 13 starts normally, the photoelectricity cycle T signal to penetrating the detection of optoelectronic switch 11 imports control by cable 12
Data processor in unit processed 18 is calculated, and can show the numerical value of " cycle T " on LED display 25, then accurate behaviour
Making the regulation rotating speed of speed governing knob 24 reaches the numerical value of " cycle T "《Experimental demonstration prospectus》Requirement, at this moment, control unit 18
Calculating process can be carried out according to the calculation procedure of preset centripetal force formula, correspondence steel can be shown on LED display 25 respectively
Ball quality is、、、With radius for R four groups " centripetal force theoretical values " numerical value, at the same time, in servomotor 13
Four centrifugation guide rails 3 are driven to press given pace v by rotating disk 7（In other words by the cycle T for adjusting setting）During rotation, four steel balls
2 will circle with centrifugation 3 one rotation of guide rail, and drawstring 4 is centripetal force to the pulling force of steel ball 2, and drawstring 4 can simultaneously to drawing
Force snesor 5 imposes identical pulling force（It is numerically equal with centripetal force）, the pulling force of four sensing detections of pulling force sensor 5
Signal will be sent to Bluetooth Receiver 17 by four bluetooth transmitters 6 respectively, then Jing after control unit 18 is processed by
On LED display 25, correspondence shows the numerical value of four groups " centripetal force experiment values ".
3rd, paired observation, the number of four groups of instruction of papil observed and recorded " centripetal force theoretical value " and " centripetal force experiment value "
According to and carry out comparative analysis, you can find per group, the numerical value of " centripetal force experiment value " is all very close to " centripetal force theoretical value "
Numerical value, such as exclude steel ball 2 and centrifugation guide rail 3 between there is stiction produced by experimental error, we can recognize completely
Fixed, per group, the numerical value of " centripetal force experiment value " is all equal with " centripetal force theoretical value ".
Can verify that by above-mentioned experimental demonstration：The conclusion of " centripetal force that object is circled is directly proportional to quality ".
We can also operate speed governing knob 24 to proceed experimental demonstration operation after rotating speed increasing is twice again, at this moment,
The numerical value of new " cycle T " can be shown on LED display 25, meanwhile, correspondence steel can be shown on LED display 25 respectively
Ball quality is、、、Numerical value, new " centripetal force experiment value " with four groups new " centripetal force theoretical values " that radius is R
Numerical value.It is observed that：The numerical value of new " cycle T " is reduced to 1/2nd of primitive period value, and new " centripetal force is theoretical
Value " numerical value is but increased to four times of former " centripetal force theoretical value "；New " centripetal force experiment value " numerical value similarly increases four times greater.And
And, the numerical value of per group new " centripetal force experiment value " is still equal with new " centripetal force theoretical value ".
So far, also can verify that by above-mentioned experimental demonstration：" centripetal force that object is circled and cycle square into anti-
Than " conclusion.
In the same manner, we can also adopt four phase homogenous quantities and be positioned over for the steel ball 2 of m in four centrifugation guide rails 3 and make four
Individual steel ball 2 at the position of different radii, the radius that the steel ball 2 of four phase homogenous quantities is located at diverse location is remembered respectively respectively
For、、、, then mounted on corresponding four pulling force sensors 5 respectively with drawstring 4.
Same operation is carried out according to above-mentioned experimental demonstration step, we are it has also been observed that on LED display 25
Can show：Four groups " centripetal force theoretical values " that the steel ball 2 of four phase homogenous quantities is circled in different radii position and " to
The data of mental and physical efforts experiment value ", be compared analysis after, we it is again seen that：" centripetal force experiment value " numerical value and " centripetal force per group
Theoretical value " is all equal.
So far, also ideally can be verified by above-mentioned experimental demonstration：" centripetal force that object is circled is with radius into just
Than " conclusion.
Finally press clearing button 20 and be zeroed out operation, lecture experiment can be terminated.
Claims (8)
1. a kind of centripetal force experiment teaching demonstration instrument, including pedestal bottom plate（1）, be installed on pedestal bottom plate（1）Servomotor
（13）, rotating disk（7）Be connected to rotating disk（7）One group of centrifugation guide rail（3）, described rotating disk（7）Connection is fitted to servomotor
（13）Output shaft end, it is characterised in that：Also include pedestal bottom plate（1）The demonstration console of front end（23）Upper equipped carries
Bluetooth Receiver（17）Control unit（18）And human-computer interaction interface, in rotating disk（7）Upper correspondence centrifugation guide rail（3）Position at
It is fitted with pulling force sensor（5）, bluetooth transmitters（6）, in servomotor（13）Output shaft on shadow shield is installed（10）, in base
Seat base plate（1）Upper and shadow shield（10）One group is equipped with corresponding position to penetrating optoelectronic switch（11）.
2. a kind of centripetal force experiment teaching demonstration instrument according to claim 1, it is characterised in that：Described control unit
（18）Also include control mainboard, servo controller, data processor, input/output interface and power supply.
3. a kind of centripetal force experiment teaching demonstration instrument according to claim 1, it is characterised in that：Described man-machine interaction circle
Face includes keyboard（19）And LED display（25）.
4. a kind of centripetal force experiment teaching demonstration instrument according to claim 1 and 2, it is characterised in that：Described rotating disk（7）
By dish axle（8）It is fixedly connected and is installed on servomotor（13）Output shaft end.
5. a kind of centripetal force experiment teaching demonstration instrument according to claim 1 and 2, it is characterised in that：Lead in the centrifugation
Rail（3）Interior sidewall surface delineation be provided with radius sign chi（15）.
6. a kind of centripetal force experiment teaching demonstration instrument according to claim 1 and 2, it is characterised in that：Lead in the centrifugation
Rail（3）Outer end be provided with baffle plate（16）.
7. a kind of centripetal force experiment teaching demonstration instrument according to claim 1 and 2, it is characterised in that：The centrifugation guide rail
（3）Quantity be four and be fixedly connected by symmetric position and be installed on the rotating disk（7）On.
8. a kind of centripetal force experiment teaching demonstration instrument according to claim 1 and 2, it is characterised in that：The demonstration operation
Platform（23）On be fitted with speed governing knob（24）With clearing button（20）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620645306.7U CN206040002U (en) | 2016-06-27 | 2016-06-27 | Centripetal force experiment teaching demonstration instrument |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620645306.7U CN206040002U (en) | 2016-06-27 | 2016-06-27 | Centripetal force experiment teaching demonstration instrument |
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| CN206040002U true CN206040002U (en) | 2017-03-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109360473A (en) * | 2018-12-05 | 2019-02-19 | 陕西理工大学 | A kind of intelligence centripetal force test demonstrator and intelligent demonstration method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109360473A (en) * | 2018-12-05 | 2019-02-19 | 陕西理工大学 | A kind of intelligence centripetal force test demonstrator and intelligent demonstration method |
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