CN209961795U - Tennis speed measuring device - Google Patents
Tennis speed measuring device Download PDFInfo
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- CN209961795U CN209961795U CN201920837911.8U CN201920837911U CN209961795U CN 209961795 U CN209961795 U CN 209961795U CN 201920837911 U CN201920837911 U CN 201920837911U CN 209961795 U CN209961795 U CN 209961795U
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- sensor
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- speed measuring
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Abstract
The utility model discloses a tennis speed sensor, include: the device comprises a shell, a power supply, a main control device, a sensor device and a transmission device; the sensor device includes a first sensor device and a second sensor device, the first sensor device including: first fixed plate and a plurality of first inductive transducer that are vertical range, second sensor device includes: the transmitting ends of the first inductive sensors and the second inductive sensors are on the same vertical plane, so that the accuracy of speed detection is improved; the casing is connected with the second fixing plate in a sliding mode, and the transmission device is connected with the second fixing plate in a meshed mode, so that the second fixing plate has a telescopic function and drives the second induction sensors to move, the tennis ball detection range is enlarged, the use range and the tennis ball speed detection accuracy are improved, the size of the speed measuring device is reduced, and the speed measuring device is convenient to move and carry.
Description
Technical Field
The utility model relates to a speed sensor technical field, concretely relates to tennis speed sensor.
Background
At present, tennis is generally carried out in a two-player-to-player mode or a four-player-to-player mode, tennis serving equipment is available on the market for meeting the requirement of single-player tennis training, and the function of playing tennis by a single player is provided. The existing tennis ball speed measuring device is large in size, generally placed at the same position to measure the speed of tennis balls, and is inconvenient to move and carry; and the detection height and range of the existing tennis ball speed measuring device are fixed, so that the tennis ball speed measuring device has poor adaptability to tennis ball serving devices of different models, and the accuracy of tennis ball speed detection is low.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problem, an object of the utility model is to provide a tennis speed sensor, the device have flexible function, can change the height and the scope that detect to adapt to the tennis service equipment of different models, improve the accuracy that tennis speed detected, and be convenient for remove and carry.
The utility model provides a technical scheme that its problem adopted is:
the utility model provides a tennis speed sensor, include: the device comprises a shell, a power supply, a main control device, a sensor device and a transmission device; the sensor device includes a first sensor device and a second sensor device, the first sensor device including: first fixed plate and a plurality of first inductive transducer of setting vertical range on first fixed plate, second sensor device includes: the first fixing plate and the second fixing plate are arranged in a vertical mode, and the transmitting ends of the first inductive sensors and the transmitting ends of the second inductive sensors are arranged on the same vertical plane; the shell is connected with a power supply, a main control device, a transmission device and a first fixing plate respectively, the shell is connected with a second fixing plate in a sliding mode, the transmission device is connected with the second fixing plate in a meshing mode, and the power supply is connected with the main control device, the sensor device and the transmission device respectively; the main control device is respectively connected with the first inductive sensors, the second inductive sensors and the transmission device.
Further, transmission includes motor, transmission shaft, gear and is used for controlling the knob of motor work, the lower extreme and the motor of transmission shaft are connected, the upper end and the gear connection of transmission shaft, the gear is connected with the vertical limit meshing of second fixed plate, the motor is connected with main control unit and power respectively, the knob is connected with main control unit, the knob sets up the surface at the casing.
Further, a first vertical guide groove and a second vertical guide groove for guiding the second fixing plate to vertically slide are arranged on the shell.
Further, the lower extreme of first vertical guide way is provided with the first short slot that is used for putting the gear, the gear is connected through the vertical limit meshing of first short slot and second fixed plate.
Further, the second sensor device further comprises a first nut and a second nut, a plurality of fixing holes for fixing the second induction sensors are formed in the second fixing plate, and the first nut and the second nut are respectively in threaded connection with the surfaces of the second induction sensors on two sides of the fixing holes so as to achieve fixed connection of the second induction sensors and the second fixing plate.
Further, the second inductive sensor adopts an infrared sensor or an ultrasonic sensor.
Further, the surface of casing is provided with the display screen, the display screen is connected with power and master control set respectively.
The embodiment of the utility model provides an in the technical scheme who provides, following beneficial effect has at least: the shell is connected with the second fixing plate in a sliding mode, and the transmission device is connected with the second fixing plate in a meshed mode, so that the second fixing plate has a telescopic function and drives the second induction sensors to move, the tennis ball detection range is enlarged, the adaptability to tennis ball serving equipment of different models is strong, the use range and the accuracy of tennis ball speed detection are improved, the size of the speed measuring device is reduced, and the speed measuring device is convenient to move and carry; a plurality of first inductive sensor are vertical to be arranged on first fixed plate, and a plurality of second inductive sensor are vertical to be arranged on the second fixed plate, and a plurality of first inductive sensor and a plurality of second inductive sensor's transmitting terminal all are in same vertical face, guarantee that first inductive sensor and second inductive sensor detect the tennis in same vertical face, reduce the detection error because of the position difference brings, improve the accuracy that speed detected.
Drawings
The invention is further described with reference to the following figures and examples.
Fig. 1 is an exploded structural view of an embodiment of the tennis ball speed measuring device of the present invention;
fig. 2 is an overall structure diagram of an embodiment of the tennis ball speed measuring device of the present invention;
fig. 3 is a block diagram of one embodiment of a sensor device of the present invention.
Detailed Description
The existing tennis ball speed measuring device is large in size, generally placed at the same position to measure the speed of tennis balls, and is inconvenient to move and carry; and the detection height and range of the existing tennis ball speed measuring device are fixed, so that the tennis ball speed measuring device has poor adaptability to tennis ball serving devices of different models, and the accuracy of tennis ball speed detection is low.
Based on this, the utility model provides a tennis speed sensor, the device have flexible function, can change the height and the scope that detect to adapt to the tennis service equipment of different models, improve the accuracy that tennis speed detected, and be convenient for remove and carry.
The embodiments of the present invention will be further explained with reference to the drawings.
Referring to fig. 1 and 2, an embodiment of the present invention provides a tennis ball speed measuring device, including: the housing 100, the power supply 200, the main control device 300, the sensor device 400 and the transmission device 500; the sensor device 400 comprises a first sensor device 410 and a second sensor device 420, the first sensor device 410 comprising: a first fixing plate 411 and a plurality of first inductive sensors 412 vertically arranged on the first fixing plate 411, wherein the second sensor device 420 comprises: the second fixing plate 421 and the plurality of second inductive sensors 422 are vertically arranged on the second fixing plate 421, and the transmitting ends of the plurality of first inductive sensors 412 and the plurality of second inductive sensors 422 are on the same vertical plane; the housing 100 is respectively connected with the power supply 200, the main control device 300, the transmission device 500 and the first fixing plate 411, the housing 100 is slidably connected with the second fixing plate 421, the transmission device 500 is engaged with the second fixing plate 421, and the power supply 200 is respectively connected with the main control device 300, the sensor device 400 and the transmission device 500; the main control device 300 is connected to the first inductive sensors 412, the second inductive sensors 422 and the transmission device 500 respectively.
In this embodiment, the housing 100 is slidably connected to the second fixing plate 421, and the transmission device 500 is engaged with the second fixing plate 421, so that the second fixing plate 421 has a telescopic function to drive the second sensing sensors 422 to move, thereby reducing the volume of the speed measuring device and facilitating moving and carrying; the tennis serving devices of different models have different heights of serving ports, so that the movement heights of tennis balls after the tennis balls are sent are different, the detection height and range of the second induction sensor 422 are increased due to the telescopic function of the second fixing plate 421, the height requirements of the tennis serving devices of different models can be met, the adaptability is high, and the accuracy and the application range of tennis ball speed detection are improved. A plurality of first inductive sensors 412 are vertically arranged on first fixing plate 411, a plurality of second inductive sensors 422 are vertically arranged on second fixing plate 421, and the transmitting ends of the first inductive sensors 412 and the second inductive sensors 422 are all on the same vertical surface, so that tennis balls can be detected by the first inductive sensors 412 and the second inductive sensors 422 in the same vertical surface, detection errors caused by position differences are reduced, and accuracy of speed detection is improved.
The first inductive sensors 412 and the second inductive sensors 422 can be vertically distributed in the vertical direction, so that the emitting ends of the first inductive sensors 412 and the emitting ends of the second inductive sensors 422 are on the same vertical line to form a light curtain, when a tennis ball passes through the light curtain, the light curtain detects the tennis ball within a period of continuous time, and the first inductive sensors 412 and/or the second inductive sensors 422 generate second trigger signals; the master control device 300 stores information related to tennis balls, such as the diameter of the tennis ball, and the master control device 300 obtains a second driving signal including information on the serving speed of the tennis ball based on a second trigger signal. The light curtain passed by the tennis ball may be formed by the first inductive sensor 412, the second inductive sensor 422, or both the first inductive sensor 412 and the second inductive sensor 422, i.e. the moving path of the tennis ball is unpredictable, resulting in inconsistent path through the light curtain.
The plurality of first inductive sensors 412 and the plurality of second inductive sensors 422 can also be distributed in parallel in the same vertical plane, so that the emitting ends of the plurality of first inductive sensors 412 and the emitting ends of the plurality of second inductive sensors 422 are distributed in parallel to form two light curtains, when a tennis ball contacts the two light curtains respectively, the first inductive sensors 412 generate a third trigger signal, and the second inductive sensors 422 generate a fourth trigger signal, and transmit the fourth trigger signal to the main control device 300; the main control device 300 stores the distance information between the first induction sensor 412 and the second induction sensor 422, that is, the distance information between the two light curtains, so that the main control device 300 can obtain a third driving signal containing tennis ball serving speed information according to the third trigger signal and the fourth trigger signal. The speed measuring device can receive the second driving signal or the third driving signal by arranging a terminal device, a loudspeaker or a display screen 130 and the like, so that the speed of the tennis ball can be known by a user.
The power supply 200 is used for supplying power to the main control device 300, the sensor device 400 and the transmission device 500; the main control device 300 is used for measuring the serving speed of the tennis ball; the housing 100 is used for accommodating and connecting the power supply 200, the main control device 300, the transmission device 500, the first fixing plate 411, the first induction sensor 412, the second fixing plate 421 and the second induction sensor 422. The shape of the housing 100 and the position arrangement of the above components in the housing 100 or on the housing 100 are not limited, and preferably, the housing 100 may be arranged into two accommodating spaces, one of which is stepped for accommodating the power supply 200 and the main control device 300, and the other of which is rectangular for accommodating the first fixing plate 411, the first inductive sensor 412, the second fixing plate 421 and the second inductive sensor 422; the two spaces are fixedly connected with each other, a connection position is provided with a walking slot hole, and the first induction sensor 412 and the second induction sensor 422 are connected with the power supply 200 and the main control device 300 through the walking slot hole. The transmission 500 may be disposed within the housing 100 or within the housing 100.
Further, another embodiment of the present invention also provides a tennis speed measuring device, wherein, the transmission device 500 includes a motor 510, a transmission shaft 520, a gear 530 and a knob 540 for controlling the motor 510 to work, the lower end of the transmission shaft 520 is connected with the motor 510, the upper end of the transmission shaft 520 is connected with the gear 530, the gear 530 is engaged with the vertical edge of the second fixing plate 421, the motor 510 is respectively connected with the main control device 300 and the power supply 200, the knob 540 is connected with the main control device 300, and the knob 540 is disposed on the surface of the housing 100.
In this embodiment, the lower end of the transmission shaft 520 is connected to the motor 510, the motor 510 can drive the transmission shaft 520 to rotate, and the upper end of the transmission shaft 520 is connected to the gear 530, that is, the motor 510 can drive the gear 530 to rotate; the gear 530 is engaged with the vertical side of the second fixing plate 421, so that the motor 510 can drive the second fixing plate 421 to move in the vertical direction, the second inductive sensor 422 and the first inductive sensor 412 are vertically distributed in the vertical direction, the emitting end of the first inductive sensor 412 and the emitting end of the second inductive sensor 422 are on the same vertical line, a light curtain is formed, and the serving speed of tennis balls is measured. The knob 540 is used for controlling the work of the motor 510, the rotation direction of the knob 540 can drive the rotation direction of the motor 510, and the rotation degree of the knob 540 can adjust the work time of the motor 510; the main control device 300 is respectively connected with the knob 540 and the motor 510, when the knob 540 is rotated, the knob 540 sends a first trigger signal to the main control device 300, the main control device 300 outputs a first driving signal to the motor 510 according to the first trigger signal, and the motor 510 receives the first driving signal and performs corresponding rotation operation; the driving arrangement between the knob 540 and the motor 510 is simple, the operation is convenient, and the difficulty of use is reduced.
Further, another embodiment of the present invention also provides a tennis ball speed measuring device, wherein the housing 100 is provided with a first vertical guiding groove 110 and a second vertical guiding groove 120 for guiding the second fixing plate 421 to slide vertically.
In this embodiment, the first vertical guide slot 110 and the second vertical guide slot 120 are disposed so that the second fixing plate 421 can slide vertically on the housing 100, and the second fixing plate 421 is prevented from shifting in position during the sliding process, so that the emitting ends of the first inductive sensor 412 and the second inductive sensor 422 are not on the same vertical line, thereby improving the accuracy of detecting the tennis serving speed.
Further, referring to fig. 3, another embodiment of the present invention further provides a tennis ball speed measuring device, wherein the lower end of the first vertical guiding groove 110 is provided with a first short groove 111 for placing a gear 530, and the gear 530 is engaged with the vertical edge of the second fixing plate 421 through the first short groove 111.
In this embodiment, the lower end of the first vertical guide slot 110 is provided with a first short slot 111 for placing the gear 530, preferably, the first short slot 111 is close to the bottom end of the first vertical guide slot 110, so that the contact range between the gear 530 and the second fixing plate 421 is the largest, that is, the moving distance of the second fixing plate 421 is the largest, and thus the vertical length of the light curtain formed by the emitting end of the first inductive sensor 412 and the emitting end of the second inductive sensor 422 is the largest, the tennis ball detection range is increased, and the detection accuracy is improved.
Further, referring to fig. 1, another embodiment of the present invention further provides a tennis ball speed measuring device, wherein the second sensor device 420 further includes a first nut 423 and a second nut 424, a plurality of fixing holes for fixing a plurality of second inductive sensors 422 are provided on the second fixing plate 421, the first nut 423 and the second nut 424 are respectively connected with the surface threads of the second inductive sensors 422 through both sides of the fixing holes, so as to realize the fixed connection between the second inductive sensors 422 and the second fixing plate 421.
In this embodiment, be provided with a plurality of fixed orifices on the second fixed plate 421, first nut 423 and second nut 424 are respectively through the surface threaded connection at the both sides of fixed orifices and second inductive sensor 422 for second inductive sensor 422 is fixed on second fixed plate 421, and fixed connection is simple, convenient operation. Meanwhile, the first inductive sensor 412 may also be fixed on the first fixing plate 411 by the above-mentioned screw connection.
Further, another embodiment of the present invention also provides a tennis ball speed measuring device, wherein the second inductive sensor 422 adopts an infrared sensor 4221 or an ultrasonic sensor 4222.
In the present embodiment, the infrared sensor 4221 is a sensor that performs measurement using physical properties of infrared rays. The infrared ray is also called as infrared ray, and has the properties of reflection, refraction, scattering, interference, absorption and the like; any substance can radiate infrared rays as long as it has a certain temperature (higher than absolute zero). Therefore, infrared rays emitted by the infrared sensors 4221 form an infrared light curtain, the infrared light curtain can effectively detect tennis balls, the measuring speed is high, the sensitivity is high, and the accuracy of tennis ball serving speed detection is improved.
The ultrasonic sensor 4222 is a sensor developed by utilizing the characteristics of ultrasonic waves. The ultrasonic wave is a mechanical wave with vibration frequency higher than that of sound wave, is generated by the vibration of the transduction wafer under the excitation of voltage, and has the characteristics of high frequency, short wavelength, good directivity, capability of being directionally propagated as rays and the like. Ultrasonic waves have high penetrating power to liquid and solid, and particularly opaque solid can generate obvious reflection to form echo waves, so that the ultrasonic sensor 4222 can effectively detect tennis balls, and the tennis ball detection device is high in sensitivity and accurate in detection. Meanwhile, the first inductive sensor 412 may also be an infrared sensor or an ultrasonic sensor 4222.
Further, another embodiment of the present invention further provides a tennis speed measuring device, wherein the surface of the casing 100 is provided with a display screen 130, and the display screen 130 is connected with the power supply 200 and the main control device 300 respectively.
In this embodiment, the display screen 130 is configured to receive a third driving signal sent by the main control device 300, and display the serve speed of the tennis ball according to the third driving signal, and the display screen 130 is disposed on the surface of the housing 100, so that a user can obtain tennis ball speed information conveniently, and more professional training is brought to a tennis player.
In addition, referring to fig. 1-3, another embodiment of the present invention further provides a tennis ball speed measuring device. This tennis speed sensor includes: the infrared sensing device comprises a shell 100, a power supply 200, a main control device 300, a motor 510, a transmission shaft 520, a gear 530, a knob 540 for controlling the motor 510 to work, a first fixing plate 411, a plurality of first infrared sensors 412 vertically arranged on the first fixing plate 411, a second fixing plate 421, a plurality of second infrared sensors 4221 vertically arranged on the second fixing plate 421, a first nut 423 and a second nut 424; the emission ends of the first infrared sensors 412 and the second infrared sensors 4221 are on the same vertical plane.
The housing 100 is provided with a first vertical guide groove 110 and a second vertical guide groove 120 for guiding the second fixing plate 421 to vertically slide; a first short groove 111 for placing a gear 530 is arranged at the lower end of the first vertical guide groove 110, and the gear 530 is engaged with the vertical edge of the second fixing plate 421 through the first short groove 111; the surface of the housing 100 is provided with a display screen 130 and a knob 540; a plurality of fixing holes for fixing a plurality of second infrared sensors 4221 are formed in the second fixing plate 421, and the first nut 423 and the second nut 424 are respectively in threaded connection with the surface of the second induction sensor 422 through two sides of the fixing holes, so that the second infrared sensors 4221 are fixedly connected with the second fixing plate 421; the lower end of the transmission shaft 520 is connected with the motor 510, and the upper end of the transmission shaft 520 is connected with the gear 530.
The housing 100 is respectively connected with the power supply 200, the main control device 300, the motor 510, the gear 530, the knob 540, the first fixing plate 411 and the second fixing plate 421, the housing 100 is slidably connected with the second fixing plate 421, the gear 530 is engaged with the second fixing plate 421, and the power supply 200 is respectively connected with the main control device 300, the motor 510, the knob 540, the first infrared sensor 412, the second infrared sensor 4221 and the display screen 130; the main control device 300 is respectively connected with the motor 510, the knob 540, the first infrared sensor 412, the second infrared sensor 4221 and the display screen 130.
In this embodiment, the housing 100 is slidably connected to the second fixing plate 421, the gear 530 is engaged with the second fixing plate 421, and the motor 510 drives the gear 530 to rotate, so that the second fixing plate 421 has a telescopic function, and drives the plurality of second infrared sensors 4221 to move, thereby increasing a detection range of tennis balls, having a strong adaptability to tennis serving devices of different models, improving accuracy of tennis ball speed detection, reducing a size of the speed measuring device, and facilitating movement and carrying. The plurality of first infrared sensors 412 are vertically arranged on the first fixing plate 411, the plurality of second infrared sensors 4221 are vertically arranged on the second fixing plate 421, and the emitting ends of the plurality of first infrared sensors 412 and the plurality of second infrared sensors 4221 are all on the same vertical line to form a light curtain; when the tennis ball passes through the light curtain, the light curtain detects the tennis ball within a continuous time, the first infrared sensor 412 and/or the second infrared sensor 4221 generate a second trigger signal and transmit the second trigger signal to the main control device 300, the main control device 300 outputs a second driving signal to the display screen 130 according to the second trigger signal, and the display screen 130 receives the second driving signal and displays the tennis ball serving speed; the arrangement of the light curtain in the vertical direction reduces detection errors caused by position difference and improves the accuracy of speed detection.
While the preferred embodiments of the present invention have been described, the present invention is not limited to the above embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications or substitutions are intended to be included within the scope of the present invention defined by the appended claims.
Claims (7)
1. A tennis speed measuring device, characterized by, includes: the device comprises a shell, a power supply, a main control device, a sensor device and a transmission device; the sensor device includes a first sensor device and a second sensor device, the first sensor device including: first fixed plate and a plurality of first inductive transducer of setting vertical range on first fixed plate, second sensor device includes: the first fixing plate and the second fixing plate are arranged in a vertical mode, and the transmitting ends of the first inductive sensors and the transmitting ends of the second inductive sensors are arranged on the same vertical plane; the shell is connected with a power supply, a main control device, a transmission device and a first fixing plate respectively, the shell is connected with a second fixing plate in a sliding mode, the transmission device is connected with the second fixing plate in a meshing mode, and the power supply is connected with the main control device, the sensor device and the transmission device respectively; the main control device is respectively connected with the first inductive sensors, the second inductive sensors and the transmission device.
2. The tennis speed measuring device of claim 1, wherein: the transmission device comprises a motor, a transmission shaft, a gear and a knob for controlling the motor to work, the lower end of the transmission shaft is connected with the motor, the upper end of the transmission shaft is connected with the gear, the gear is meshed with the vertical edge of the second fixing plate and is connected with a main control device and a power supply, the knob is connected with the main control device, and the knob is arranged on the surface of the shell.
3. The tennis speed measuring device of claim 2, wherein: the shell is provided with a first vertical guide groove and a second vertical guide groove which are used for guiding the second fixing plate to vertically slide.
4. A tennis ball speed measuring device according to claim 3, wherein: the lower extreme of first vertical guide way is provided with the first short slot that is used for putting the gear, the gear passes through the vertical limit meshing connection of first short slot and second fixed plate.
5. The tennis speed measuring device of claim 1, wherein: the second sensor device further comprises a first nut and a second nut, a plurality of fixing holes for fixing the second induction sensors are formed in the second fixing plate, and the first nut and the second nut are respectively in threaded connection with the surfaces of the second induction sensors on two sides of the fixing holes so as to fixedly connect the second induction sensors with the second fixing plate.
6. The tennis speed measuring device of claim 1, wherein: the second induction sensor adopts an infrared sensor or an ultrasonic sensor.
7. The tennis speed measuring device of claim 1, wherein: the surface of the shell is provided with a display screen, and the display screen is connected with a power supply and a main control device respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920837911.8U CN209961795U (en) | 2019-06-04 | 2019-06-04 | Tennis speed measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920837911.8U CN209961795U (en) | 2019-06-04 | 2019-06-04 | Tennis speed measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209961795U true CN209961795U (en) | 2020-01-17 |
Family
ID=69247164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920837911.8U Expired - Fee Related CN209961795U (en) | 2019-06-04 | 2019-06-04 | Tennis speed measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209961795U (en) |
-
2019
- 2019-06-04 CN CN201920837911.8U patent/CN209961795U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200117 Termination date: 20210604 |
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| CF01 | Termination of patent right due to non-payment of annual fee |