CN210170807U - Ball-out frequency measuring device of table tennis service robot - Google Patents
Ball-out frequency measuring device of table tennis service robot Download PDFInfo
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- CN210170807U CN210170807U CN201920639728.7U CN201920639728U CN210170807U CN 210170807 U CN210170807 U CN 210170807U CN 201920639728 U CN201920639728 U CN 201920639728U CN 210170807 U CN210170807 U CN 210170807U
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Abstract
The utility model discloses a table tennis service robot's play ball frequency measuring device, including measuring device body, infrared emission module, infrared receiving module, level comparison circuit, controller and display module, the service robot body top is located to the measuring device body, the ball mouth both sides of serving the ball of service robot body are located respectively to infrared emission module and infrared receiving module, level comparison circuit's input is connected to infrared receiving module's output, level comparison circuit's output connection director's input, display module's input is connected to the output of controller. The embodiment of the utility model discloses a service frequency signal that obtains the service robot body through infrared emission module and infrared receiving module belongs to the non-contact measurement, can not influence the normal work of service robot body when obtaining service frequency signal, and the rate of accuracy is high, but wide application in measuring device technical field.
Description
Technical Field
The utility model belongs to the technical field of measuring device technique and specifically relates to a table tennis service robot's play ball frequency measurement device.
Background
China is one of the most popular countries of table tennis, and the development of table tennis greatly promotes the development of table tennis sports equipment, wherein a table tennis service robot is the most well-known equipment for project enthusiasts and athletes. There are many parameters that can be adjusted by the table tennis service robot, such as the ball-out frequency, the ball-out speed, the rotation, etc., wherein the ball-out frequency is an important parameter for inspecting the table tennis service robot, and it can be used to measure the efficiency of the whole operation system of the service robot, and it is generally considered that the wider the adjustable range of the ball-out frequency is, the better the performance is. Therefore, manufacturers usually mark this parameter and strive to improve it by optimizing the structural design of the equipment.
In order to verify whether the parameters of the ball-serving frequency provided by the table tennis ball serving machine are accurate, a corresponding measuring device is required, but relatively few reports are reported for measuring the ball-serving frequency of the table tennis ball serving machine from the current searched documents. In the technology of timing processing of pulse signals, usually, timing accumulation is directly performed on a lower computer to obtain required statistical data, but for long-time timing, the method increases the time accumulation error and reduces the accuracy.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the present invention provides a high-accuracy ball output frequency measuring device for a table tennis ball serving machine.
The embodiment of the utility model provides a table tennis service robot's play ball frequency measuring device, including measuring device body, infrared emission module, infrared receiving module, level comparison circuit, controller and display module, service robot body top is located to the measuring device body, the ball mouth both sides of serving the ball of service robot body are located respectively to infrared emission module and infrared receiving module, level comparison circuit's input is connected to infrared receiving module's output, level comparison circuit's output connection director's input, display module's input is connected to the output of controller.
Further, still include communication module, communication module connects the controller.
Further, the mobile terminal is further included and connected with the communication module.
Furthermore, the infrared transmitting module and the infrared receiving module are arranged on the same axis.
And the output end of the power supply module is respectively connected with the power input end of the infrared transmitting module, the power input end of the infrared receiving module, the power input end of the level comparison circuit, the power input end of the controller and the power input end of the display module.
Further, the infrared emission module comprises an infrared diode and a seventh resistor, wherein the anode of the infrared diode is connected with the power supply end, and the cathode of the infrared diode is grounded through the seventh resistor.
Further, the infrared receiving module comprises an infrared receiving tube, a third capacitor, a fourth capacitor, a fifth resistor, a sixth resistor and TLV3501 chips, wherein an anode of the infrared receiving tube is connected with one end of the fourth capacitor, the other end of the fourth capacitor is connected with one end of the sixth resistor and 3 pins of the TLV3501 chips, a cathode of the infrared receiving tube is connected with one end of the sixth resistor, the other end of the sixth resistor is connected with one end of the third capacitor, the other end of the third capacitor is connected with one end of the fifth resistor, the other end of the fifth resistor is respectively connected with 2 pins and a power supply end of the TLV3501 chips, and the other end of the third capacitor, the anode of the infrared receiving tube, 4 pins of the TLV3501 chips and 8 pins of the TLV3501 chips are all grounded.
Further, the communication module is a Bluetooth module.
Above-mentioned the utility model discloses technical scheme in the embodiment has following advantage: the embodiment of the utility model discloses a service frequency signal that obtains the service robot body through infrared emission module and infrared receiving module belongs to the non-contact measurement, can not influence the normal work of service robot body when obtaining service frequency signal, and the rate of accuracy is high.
Drawings
Fig. 1 is a block diagram of the overall structure of a ball-discharging frequency measuring device of a table tennis service robot of the present invention;
fig. 2 is a schematic structural diagram of a measuring device body according to an embodiment of the present invention;
fig. 3 is a schematic circuit diagram of a power module according to an embodiment of the present invention;
fig. 4 is a schematic circuit diagram of an infrared emission module according to an embodiment of the present invention;
fig. 5 is a schematic circuit diagram of an infrared receiving module according to an embodiment of the present invention;
fig. 6 is a schematic circuit diagram of a controller and a communication module according to an embodiment of the present invention.
Detailed Description
Referring to fig. 1, the embodiment of the utility model provides a table tennis service robot's play ball frequency measuring device, including measuring device body, infrared emission module, infrared receiving module, level comparison circuit, controller and display module, service robot body top is located to the measuring device body, the ball mouth both sides of serving the ball the body are located respectively to infrared emission module and infrared receiving module, level comparison circuit's input is connected to infrared receiving module's output, level comparison circuit's output connection director's input, display module's input is connected to the output of controller.
Wherein, the service robot body is used for launching the table tennis.
And the infrared transmitting module is used for transmitting infrared irradiation light in real time so that the infrared receiving module can receive the infrared emission light. The infrared emission module of the present invention can be realized by using the circuit shown in fig. 4.
And the infrared receiving module is used for receiving the infrared irradiation light emitted by the infrared emitting module in real time. The infrared receiving module of the present invention can be realized by using a circuit as shown in fig. 5. The utility model discloses an infrared receiving module and infrared transmitting module realize the real-time response to the table tennis to export corresponding analog signal.
And the level comparison circuit is used for receiving the analog signal sent by the infrared receiving module and then feeding back a TTL level pulse signal to the controller. Specifically, the utility model discloses a level comparison circuit compares infrared receiving tube's signal and threshold level, obtains TTL level pulse signal. The utility model discloses a level comparison circuit can adopt current level comparison circuit to realize, no longer gives unnecessary details here.
And the controller is used for triggering corresponding control signals to the display module, the communication module and the like according to the TTL level pulse signals sent by the level comparison circuit. The controller of the present invention can be implemented by using the existing MCU, for example, the STC8F2K16S2 chip shown in fig. 6.
And the display module is used for displaying contents according to the control signal of the controller, such as displaying a ball frequency value.
As shown in fig. 2, the measuring device body of the present embodiment is placed on the top end of the pitching machine body by a jig.
Further as a preferred embodiment, the system further comprises a communication module, and the communication module is connected with the controller.
The communication module is used for realizing data communication between the controller and the remote mobile terminal. As shown in fig. 6, in this embodiment, an external interrupt IO interface P3.7 of the MCU controller with model STC8F2K16S2 receives a digital pulse signal, and then sends the pulse signal to the bluetooth module through a serial port, and the bluetooth module transmits the signal to the mobile phone, and the measurement result can be displayed on the LCD.
After receiving the signal sent by the MCU, the mobile phone obtains the clock signal of the mobile phone to time for 1 minute, and figures in each minute are calculated in a counting mode, wherein the figures are the ball output frequency of the table tennis service robot. The embodiment can obtain the ball outlet frequency through the mobile phone end, greatly reduce the complexity of the measuring device and improve the portability and the accuracy of the measuring device.
Further as a preferred embodiment, the system further comprises a mobile terminal, and the mobile terminal is connected with the communication module.
The mobile terminal includes, but is not limited to, a smart phone, a tablet computer, a notebook computer, a smart band, and the like.
Further preferably, the infrared emitting module and the infrared receiving module are disposed on the same axis.
Specifically, the infrared transmitting module and the infrared receiving module of this embodiment are arranged on the same axis of the pitching machine body, so that the receiving accuracy of the infrared light signal is improved.
Referring to fig. 1, as a further preferred embodiment, the infrared receiving device further includes a power supply module, and an output end of the power supply module is respectively connected to a power input end of the infrared transmitting module, a power input end of the infrared receiving module, a power input end of the level comparing circuit, a power input end of the controller, and a power input end of the display module.
The power module is configured to provide a working power supply for the infrared transmitting module, the infrared receiving module, the level comparing circuit, the controller, the display module, and the like, and the power module of this embodiment may be implemented by using a circuit as shown in fig. 3.
Specifically, as shown in fig. 3, the measuring device of the present embodiment is powered by a lithium battery, and the voltage is stabilized to 3.3 v through ADP3339, and meanwhile, an AZ809 is used to realize a low voltage alarm of the lithium battery; when the voltage is lower than a certain threshold value, the pin 2 of the AZ809 outputs a low level, the LED is lightened, and the lithium battery is low in electric quantity and needs to be charged in time.
Referring to fig. 4, in a further preferred embodiment, the infrared emitting module includes an infrared diode D1 and a seventh resistor R7, an anode of the infrared diode D1 is connected to a power supply terminal, and a cathode of the infrared diode D1 is grounded through the seventh resistor R7.
Referring to fig. 5, further as a preferred embodiment, the infrared receiving module includes an infrared receiving tube D2, a third capacitor C3, a fourth capacitor C4, a fifth resistor R5, a sixth resistor R6 and TLV3501 chips, an anode of the infrared receiving tube D2 is connected to one end of a fourth capacitor C4, the other end of the fourth capacitor C4 is connected to one end of a sixth resistor R6 and a 3 pin of a TLV3501 chip, a cathode of the infrared receiving tube D2 is connected to one end of a sixth resistor R6, the other end of the sixth resistor R6 is connected to one end of the third capacitor C3, the other end of the third capacitor C3 is connected to one end of a fifth resistor R5, the other end of the fifth resistor R5 is connected to a 2 pin and a power supply terminal of a TLV3501 chip, and the other ends of the third capacitor C3, the infrared receiving tube D2, the 4 pin of the TLV 1 chip and the 8 pin of the TLV3501 chip are all grounded.
The infrared diode shown in fig. 4 is kept normally bright after being powered on, and when the signal of the infrared receiving tube is shielded by the ping-pong ball, there is only a very small dark current, so the level of the pin 3 of the high-speed comparator TLV3501 is pulled up to 3.3 v by the pull-up resistor. When the infrared receiving tube is not shielded by the table tennis ball, the infrared receiving tube has larger leakage current to form photocurrent, and the level of the pin 3 is pulled down. The voltage signal of the infrared receiving tube when the infrared receiving tube is shielded or not shielded is compared with the level of the TLV3501 pin 2, so that a high-low pulse signal of TTL level is output, and the threshold level can be adjusted through the adjustable resistor R5.
Further preferably, the communication module is a bluetooth module.
The following detailed description the utility model relates to a table tennis service robot's play ball frequency measuring device's specific working process:
the service robot body is at the course of the work, and when table tennis flew out the ball mouth, the infrared geminate transistors that set up in ball mouth both sides received the play ball signal of table tennis, then will play ball signal transmission to level comparison circuit, level comparison circuit feeds back TTL level pulse signal to the controller, and the controller control display module carries out the data show. Simultaneously, the controller still sends corresponding signal to mobile terminal through communication module, the utility model discloses can obtain out ball frequency value through mobile terminal, and then return to the controller, finally carry out the data show through display module.
To sum up, the utility model relates to a table tennis service robot's play ball frequency measuring device has following advantage:
1. the embodiment of the utility model discloses a service frequency signal that obtains the service robot body through infrared emission module and infrared receiving module belongs to the non-contact measurement, can not influence the normal work of service robot body when obtaining service frequency signal, and the rate of accuracy is high.
2. The utility model discloses can obtain out the ball frequency through the cell-phone end, can reduce measuring device's complexity greatly, improve measuring device's portability and accuracy.
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 as defined by the appended claims.
Claims (8)
1. The utility model provides a table tennis service robot's play ball frequency measuring device which characterized in that: including measuring device body, infrared emission module, infrared receiving module, level comparison circuit, controller and display module, the pitching machine body top is located to the measuring device body, the ball mouth both sides of pitching machine body are located respectively to infrared emission module and infrared receiving module, level comparison circuit's input is connected to infrared receiving module's output, level comparison circuit's output connection director's input, display module's input is connected to the output of controller.
2. The ball-out frequency measuring device of table tennis serving machine according to claim 1, characterized in that: the intelligent control system also comprises a communication module, and the communication module is connected with the controller.
3. The ball-out frequency measuring device of table tennis serving machine according to claim 2, characterized in that: the mobile terminal is connected with the communication module.
4. The ball-out frequency measuring device of table tennis serving machine according to claim 1, characterized in that: the infrared transmitting module and the infrared receiving module are arranged on the same axis.
5. The ball-out frequency measuring device of table tennis serving machine according to claim 1, characterized in that: the output end of the power supply module is respectively connected with the power input end of the infrared transmitting module, the power input end of the infrared receiving module, the power input end of the level comparison circuit, the power input end of the controller and the power input end of the display module.
6. The ball-out frequency measuring device of table tennis serving machine according to claim 1, characterized in that: the infrared emission module comprises an infrared diode and a seventh resistor, wherein the anode of the infrared diode is connected with a power supply end, and the cathode of the infrared diode is grounded through the seventh resistor.
7. The ball-out frequency measuring device of table tennis serving machine according to claim 1, characterized in that: the infrared receiving module comprises an infrared receiving tube, a third capacitor, a fourth capacitor, a fifth resistor, a sixth resistor and TLV3501 chips, wherein an anode of the infrared receiving tube is connected with one end of the fourth capacitor, the other end of the fourth capacitor is connected with one end of the sixth resistor and 3 pins of the TLV3501 chip, a cathode of the infrared receiving tube is connected with one end of the sixth resistor, the other end of the sixth resistor is connected with one end of the third capacitor, the other end of the third capacitor is connected with one end of the fifth resistor, the other end of the fifth resistor is respectively connected with 2 pins and a power supply end of the TLV3501 chip, and the other end of the third capacitor, the anode of the infrared receiving tube, 4 pins of the TLV3501 chip and 8 pins of the TLV3501 chip are all grounded.
8. The ball-out frequency measuring device of table tennis serving machine according to claim 2, characterized in that: the communication module is a Bluetooth module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920639728.7U CN210170807U (en) | 2019-05-05 | 2019-05-05 | Ball-out frequency measuring device of table tennis service robot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920639728.7U CN210170807U (en) | 2019-05-05 | 2019-05-05 | Ball-out frequency measuring device of table tennis service robot |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210170807U true CN210170807U (en) | 2020-03-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920639728.7U Expired - Fee Related CN210170807U (en) | 2019-05-05 | 2019-05-05 | Ball-out frequency measuring device of table tennis service robot |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210170807U (en) |
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2019
- 2019-05-05 CN CN201920639728.7U patent/CN210170807U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200923 Address after: 510000 No. 729 Dongfeng East Road, Guangdong, Guangzhou Patentee after: GUANGDONG University OF TECHNOLOGY Address before: 510006 Xiaoguwei Street, Panyu District, Guangzhou City, Guangdong Province, No. 100, West Ring Road, Guangzhou University Town, Eastern Living District, Guangdong University of Technology Patentee before: Chen Taowen |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200324 |