CN203694544U - Intelligent table tennis bat - Google Patents
Intelligent table tennis bat Download PDFInfo
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- CN203694544U CN203694544U CN201320819149.3U CN201320819149U CN203694544U CN 203694544 U CN203694544 U CN 203694544U CN 201320819149 U CN201320819149 U CN 201320819149U CN 203694544 U CN203694544 U CN 203694544U
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Abstract
The utility model relates to an intelligent table tennis bat which comprises a handle, a left base plate and a right base plate, wherein the left base plate and the right base plate are oppositely arranged at the two sides of the handle; a gap is formed between the left base plate and the right base plate; a circuit board is arranged in the gap; a plurality of piezoelectric film sensors are respectively and evenly stuck on the inner surfaces of the left base plate and the right base plate at the sides facing to the circuit board; a main control micro-programmed control unit (MCU), a signal conditioning circuit, a memory and a communication interface circuit are welded on the circuit board; output ends of the piezoelectric film sensors are connected with an input end of the signal conditioning circuit; an output end of the signal conditioning circuit is connected with an input end of the main control MCU; an output end of the main control MCU has communication with an upper computer by the communication interface circuit. After the intelligent table tennis bat is used, the useful data and information can be obtained in the table tennis training process, so that an objective data source is provided for improving the training quality in the future; the intelligent table tennis bat can be used for acquiring the information such as table tennis hitting force, table tennis hitting position, table tennis hitting frequency and the like; the intelligent table tennis bat has the characteristics of being intelligent, low in power consumption and compact in structure.
Description
Technical field
The utility model relates to the headend equipment technical field of table tennis intelligent data acquisition and statistical system, and especially a kind of smart table tennis is clapped.
Background technology
At present, the contact-making surface of table tennis bat and table tennis adopts the plank of certain material as support conventionally, then, at the bonding rubber with particular characteristic in two sides that supports plank, is used for table tennis to carry out attack back and forth.At actual table tennis training and during the games, batter's box, dynamics and the batting frequency of table tennis directly affects the achievement of training and competition, but, common table tennis bat cannot provide the information such as batter's box in training and the training process especially of competing, dynamics, batting frequency, thereby objective related data is provided cannot to coach and sportsman, causes training to there is certain blindness.
Utility model content
The purpose of this utility model is to provide a kind of smart table tennis bat that can gather and analyze, improve the training degree of accuracy and training tool to data such as batter's box, batting dynamics, batting frequencies.
For achieving the above object, the utility model has adopted following technical scheme: a kind of smart table tennis is clapped, comprise handle and be oppositely disposed in a left side for its both sides, right substrate, left, gapped between right substrate, circuit board is arranged in this gap, left, right substrate is evenly pasted multiple piezoelectric film sensors on the inner surface of a side of circuit board, on circuit board, weld main control MCU, signal conditioning circuit, memory and communication interface circuit, the output of piezoelectric film sensor is connected with the input of signal conditioning circuit, the output of signal conditioning circuit is connected with the input of main control MCU, the input/output terminal of main control MCU is by communication interface circuit and upper machine communication.
On the outer surface of described left and right substrate, all paste rubber; Communication interface is offered in the end of described handle, and the cavity for holding lithium battery is offered in handle inside.
On the inner surface of described left substrate, evenly paste 9 piezoelectric film sensors, on the inner surface of described right substrate, evenly paste 9 piezoelectric film sensors.
The input/output terminal of described main control MCU is connected with the input/output terminal of memory, communication interface circuit respectively, and power circuit is respectively to main control MCU, signal conditioning circuit, communication interface circuit power supply, and described main control MCU adopts C8051F312 single-chip microcomputer.
Described signal conditioning circuit is made up of left substrate signal modulate circuit and right substrate signal modulate circuit, the signal input part of described main control MCU is connected with the output of left and right substrate signal modulate circuit respectively, the input of left substrate signal modulate circuit is connected with the output of the piezoelectric film sensor of pasting on left substrate, and its number is consistent with the number of the piezoelectric film sensor of pasting on left substrate; The input of right substrate signal modulate circuit is connected with the output of the piezoelectric film sensor of pasting on right substrate, and its number is consistent with the number of the piezoelectric film sensor of pasting on right substrate.
Described power circuit comprises three terminal regulator HT7330, the 3.6V direct current that its input termination lithium battery provides, its output is connected with 4 pin of C8051F312 single-chip microcomputer, the input of Π type filter circuit respectively, and the output of Π type filter circuit is connected with the power end of signal conditioning circuit.
Described signal conditioning circuit comprises amplifier U2A, its inverting input connects the positive pole of piezoelectric film sensor successively by resistance R 4, capacitor C 4, the normal phase input end of amplifier U2A is connected with the output of Π type filter circuit, the output of amplifier U2A connects the normal phase input end of amplifier U2B successively by resistance R 2, R3, the output of amplifier U2B is connected with 2 pin of C8051F312 single-chip microcomputer, and described amplifier U2A, U2B all adopt AD823 chip.
Described communication interface circuit is RS485 telecommunication circuit, RS485 telecommunication circuit comprises MAX3485 chip, 3,4,1 pin is connected with 28,30,29 pin of C8051F312 single-chip microcomputer respectively, 2,3 pin are connected, its 5 pin ground connection, its 8 pin is by capacitor C 10 ground connection, and 6,7 pin are respectively by resistance R 16, R17 and upper machine communication.
Described memory is eeprom memory, and eeprom memory adopts 24C256 chip, 1, the connected rear ground connection of 2,3,4 pin, and its 8 pin connects the output of power circuit, and 6,5 pin are connected with 7,8 pin of C8051F312 single-chip microcomputer respectively.
As shown from the above technical solution, first the utility model gathers the output signal of piezoelectric film sensor, the output signal of each piezoelectric film sensor is amplified by signal conditioning circuit, the processing such as filtering, obtained the measurement of striking point on the ball position and batting frequency by main control MCU, and be sent to memory stores, in the time that needs are processed these information, by RS485 bus by these data upload to host computer, by the relevant treatment of upper computer software, can obtain the useful data message in table tennis training process, provide objective data source for improve training quality in the future.The utility model can be realized obtaining information such as table tennis ball kicking dynamics, position and batting frequencies, there is intelligentized feature, in addition, the utility model utilizes the forward piezo-electric effect of piezoelectric film sensor, mechanical energy is converted to electric energy, and adopt the integrated chip of low-power consumption, realize the data acquisition process of super low-power consumption, low in energy consumption, compact conformation.
Brief description of the drawings
Fig. 1,2 is structural representation of the present utility model.
Fig. 3 is circuit block diagram of the present utility model.
Fig. 4,5,6,7,8 is respectively the circuit theory diagrams of main control MCU in the utility model, signal conditioning circuit, power circuit, eeprom memory, RS485 communication interface circuit.
Detailed description of the invention
Smart table tennis is clapped, comprise handle 3 and be oppositely disposed in a left side for its both sides, right substrate 1, 2, left, right substrate 1, gapped between 2, circuit board 4 is arranged in this gap, left, right substrate 1, on the inner surface of 2 sides towards circuit board 4, evenly paste multiple piezoelectric film sensors 5, on circuit board 4, weld main control MCU 9, signal conditioning circuit, memory and communication interface circuit, the output of piezoelectric film sensor 5 is connected with the input of signal conditioning circuit, the output of signal conditioning circuit is connected with the input of main control MCU 9, the input/output terminal of main control MCU 9 is by communication interface circuit and upper machine communication, as Fig. 1, shown in 2.
As shown in Figure 1, 2, on the outer surface of described left and right substrate 1,2, all paste rubber; Communication interface 6 is offered in the end of described handle 3, and the groove 7 for lithium battery is installed is offered in handle 3 inside.On the inner surface of described left substrate 1, evenly paste 9 piezoelectric film sensors 5, on the inner surface of described right substrate 2, evenly paste 9 piezoelectric film sensors 5.Each piezoelectric film sensor 5 output lines are two, be connected on circuit board 4, concrete operation principle is as follows: when left substrate 1 or right substrate 2 somewheres impact after table tennis, the signal of exporting apart from striking point on the ball piezoelectric film sensor 5 is the most nearby for maximum, the signal of the piezoelectric film sensor of other somes output simultaneously becomes linear approximate relationship with the distance apart from striking point on the ball, after fast A/D C conversion by signal conditioning circuit and main control MCU 9, by cumulative the signal of the each point batting dynamics that obtains, obtain the position of striking point on the ball according to linear interpolation algorithm simultaneously.Meanwhile, the batting number of times in certain hour interval is obtained to the frequency of batting, then relevant information is kept in eeprom memory 8, communication interface 6 realizes smart table tennis and claps and the communicating by letter of host computer, the chargeable dismountable lithium battery of the interior installation of groove 7.
As shown in Figure 3, the input/output terminal of described main control MCU 9 respectively with memory, the input/output terminal of communication interface circuit is connected, power circuit is respectively to main control MCU 9, signal conditioning circuit, communication interface circuit power supply, described signal conditioning circuit is made up of left substrate signal modulate circuit and right substrate signal modulate circuit, the signal input part of described main control MCU 9 respectively with a left side, the output of right substrate signal modulate circuit is connected, the input of left substrate signal modulate circuit is connected with the output of the piezoelectric film sensor 5 of pasting on left substrate 1, and its number is consistent with the number of the piezoelectric film sensor 5 of pasting on left substrate 1, the input of right substrate signal modulate circuit is connected with the output of the piezoelectric film sensor 5 of pasting on right substrate 2, and its number is consistent with the number of the piezoelectric film sensor 5 of pasting on right substrate 2, and left substrate signal modulate circuit is identical with the electric circuit constitute of right substrate signal modulate circuit.
As shown in Figure 4, described main control MCU 9 adopts C8051F312 single-chip microcomputer, and this single-chip microcomputer inside has abundant Resources on Chip, and the 10bit high-speed ADC that it has 21 passages is conducive to the Highgrade integration of internal circuit.Left substrate 1 and right substrate 2 18 road sensor signals are after 18 signal conditioning circuits are processed, and each ADC passage that the voltage signal of generation single-stage is sent into main control MCU 9 carries out AD conversion.The debugging interface of C8051F312 single-chip microcomputer is two-wire system C2 interface, is respectively C2CK interface and P3.0/C2D interface, the input that P0.0～P3.4 mouth can be ADC by the crossbar configuration of main control MCU 9 inside.The signal that piezoelectric film sensor 5 is exported by signal conditioning circuit---A00～A15 single-stage signal, is input to C8051F312 single-chip microcomputer P0.0～P0.3 mouth; P0.7～P2.2 mouth is as the positive polarity input of ADC, the negative polarity input of ADC is GND, ADC is operated under single-stage sexual norm, the inner relative program algorithm of carrying out of C8051F312 single-chip microcomputer, obtain the relevant informations such as relevant batting dynamics, batter's box and batting frequency by the collection of the output signal to piezoelectric film sensor 5, P0.4～P0.6 mouth is as RS485 interface, and oscillation source adopts inner high precision high stability RC oscillator.
As shown in Figure 5, described signal conditioning circuit comprises amplifier U2A, its inverting input connects the positive pole of piezoelectric film sensor 5 successively by resistance R 4, capacitor C 4, the normal phase input end of amplifier U2A is connected with the output of Π type filter circuit, the output of amplifier U2A connects the normal phase input end of amplifier U2B successively by resistance R 2, R3, the output of amplifier U2B is connected with 2 pin of C8051F312 single-chip microcomputer, and described amplifier U2A, U2B all adopt AD823 chip.Signal conditioning circuit converts the output charge signal of piezoelectric film sensor to voltage signal, formed by operational amplifier and feedback network, the operational amplifier adopting is the operational amplifier with high impedance---AD823 chip, its input impedance is 1013 ohm, bandwidth is 16MHz, is very suitable for the measuring circuit of piezoelectric film sensor.In order to ensure precision, the feedback capacity C1 of charge conversion part adopts stability and the high accurate electric capacity of CB series metal film of insulaion resistance, and the resistance of feedback resistance R1 is selected as the case may be, and general value is larger, in order to ensure the gain of circuit, feedback capacity C1 can not get too large simultaneously.The effect of capacitor C 4 is the drifts every direct sum isolation piezoelectric film sensor 5, and the effect of the RC parallel circuit that capacitor C 2 and resistance R 4 form is oscillation-damped and produces leading phase shift.After charge conversion voltage, have spike and burr, utilize the second order active low-pass filter of resistance R 2, R3, capacitor C 3, C5 and amplifier U2B composition to carry out filtering, can obtain good output voltage waveforms, the gain of second order active low-pass filter is determined by resistance R 8, R7.
As shown in Figure 6, described power circuit comprises three terminal regulator HT7330, the 3.6V direct current that its input termination lithium battery provides, its output is connected with 4 pin of C8051F312 single-chip microcomputer, the input of Π type filter circuit respectively, and the output of Π type filter circuit is connected with the power end of signal conditioning circuit.Internal circuit is powered by single-unit chargeable lithium cell, the lithium battery voltage of single-unit is 3.6VDC, power adjustment adopts the three terminal regulator HT7330 of ultralow quiescent current to produce the burning voltage of 3V, gives the internal circuit power supplies such as C8051F312 single-chip microcomputer and signal conditioning circuit.In order to allow analog circuit and digital circuit power supply and cabling separately respectively, analog circuit power supply 3VA, AGND and digital circuit 3VCC, GND are separated by Π type filter circuit and resistance R 10.The in-phase input end that the voltage that produces 1.5V by resistance R 11 and R14 is linked into amplifier U2A does not have the output voltage of amplifier when stressed as piezoelectric film sensor 5, capacitor C 11～C18 is as shunt capacitance, for the decoupling capacitance of amplifier U2A.
As shown in Figure 7, described memory is eeprom memory 8, and eeprom memory 8 adopts 24C256 chip, 1, the connected rear ground connection of 2,3,4 pin, and its 8 pin connects the output of power circuit, and 6,5 pin are connected with 7,8 pin of C8051F312 single-chip microcomputer respectively.Relevant information is stored in eeprom memory 8, eeprom memory 8 adopts 24C256 chip, the memory capacity of 24C256 chip is 256Kbit, memory capacity can meet the data storage in certain hour interval, resistance R 12, R13 are as pull-up resistor, and the clock of 24C256 chip is connected with P3.2 mouth with the P3.1 of C8051F312 single-chip microcomputer respectively with data terminal.
As shown in Figure 8, described communication interface circuit is RS485 communication interface circuit 10, RS485 communication interface circuit 10 comprises MAX3485 chip, 3,4,1 pin is connected with 28,30,29 pin of C8051F312 single-chip microcomputer respectively, 2,3 pin are connected, its 5 pin ground connection, its 8 pin is by capacitor C 10 ground connection, and 6,7 pin are respectively by resistance R 16, R17 and upper machine communication.MAX3485 chip is RS485 logic level transition chip, work in half duplex mode of communication, direction control signal DIR is wherein connected with the P0.6 of C8051F312 single-chip microcomputer, resistance R 15 is pull-up resistor, resistance R 18 is pull down resistor, resistance R 16, R17 are energy absorption resistance, and the stability of communicating by letter of RS485 bus can be provided by upper pull down resistor and energy absorption resistance, and communication protocol adopts the MODBUS rtu protocol of standard.
In sum, first the utility model gathers the output signal of piezoelectric film sensor 5, the output signal of each piezoelectric film sensor 5 is amplified by signal conditioning circuit, the processing such as filtering, obtained the measurement of striking point on the ball position and batting frequency by main control MCU 9, and be sent to memory stores, in the time that needs are processed these information, by RS485 bus by these data upload to host computer, by the relevant treatment of upper computer software, can obtain the useful data message in table tennis training process, provide objective data source for improve training quality in the future.The utility model can be realized the obtaining of the information such as table tennis ball kicking dynamics, position and batting frequency, and has intelligentized feature.
Claims (9)
1. smart table tennis is clapped, it is characterized in that: comprise handle (3) and be oppositely disposed in a left side for its both sides, right substrate (1, 2), left, right substrate (1, 2) gapped between, circuit board (4) is arranged in this gap, left, right substrate (1, 2) on the inner surface of a side of circuit board (4), evenly paste multiple piezoelectric film sensors (5), circuit board (4) upper welding main control MCU (9), signal conditioning circuit, memory and communication interface circuit, the output of piezoelectric film sensor (5) is connected with the input of signal conditioning circuit, the output of signal conditioning circuit is connected with the input of main control MCU (9), the input/output terminal of main control MCU (9) is by communication interface circuit and upper machine communication.
2. smart table tennis according to claim 1 is clapped, and it is characterized in that: on the outer surface of described left and right substrate (1,2), all paste rubber; Communication interface (6) is offered in the end of described handle (3), and the groove (7) for lithium battery is installed is offered in handle (3) inside.
3. smart table tennis according to claim 1 is clapped, and it is characterized in that: on the inner surface of described left substrate (1), evenly paste 9 piezoelectric film sensors (5), evenly paste 9 piezoelectric film sensors (5) on the inner surface of described right substrate (2).
4. smart table tennis according to claim 1 is clapped, it is characterized in that: the input/output terminal of described main control MCU (9) is connected with the input/output terminal of memory, communication interface circuit respectively, power circuit is respectively to main control MCU (9), signal conditioning circuit, communication interface circuit power supply, and described main control MCU (9) adopts C8051F312 single-chip microcomputer.
5. smart table tennis according to claim 1 is clapped, it is characterized in that: described signal conditioning circuit is made up of left substrate signal modulate circuit and right substrate signal modulate circuit, the signal input part of described main control MCU (9) is connected with the output of left and right substrate signal modulate circuit respectively, the input of left substrate signal modulate circuit is connected with the output of the upper piezoelectric film sensor (5) of pasting of left substrate (1), and its number is consistent with the number of the upper piezoelectric film sensor (5) of pasting of left substrate (1); The input of right substrate signal modulate circuit is connected with the output of the upper piezoelectric film sensor (5) of pasting of right substrate (2), and its number is consistent with the number of the upper piezoelectric film sensor (5) of pasting of right substrate (2).
6. smart table tennis according to claim 4 is clapped, it is characterized in that: described power circuit comprises three terminal regulator HT7330, the 3.6V direct current that its input termination lithium battery provides, its output is connected with 4 pin of C8051F312 single-chip microcomputer, the input of Π type filter circuit respectively, and the output of Π type filter circuit is connected with the power end of signal conditioning circuit.
7. smart table tennis according to claim 4 is clapped, it is characterized in that: described signal conditioning circuit comprises amplifier U2A, its inverting input connects the positive pole of piezoelectric film sensor (5) successively by resistance R 4, capacitor C 4, the normal phase input end of amplifier U2A is connected with the output of Π type filter circuit, the output of amplifier U2A connects the normal phase input end of amplifier U2B successively by resistance R 2, R3, the output of amplifier U2B is connected with 2 pin of C8051F312 single-chip microcomputer, and described amplifier U2A, U2B all adopt AD823 chip.
8. smart table tennis according to claim 4 is clapped, it is characterized in that: described communication interface circuit is RS485 communication interface circuit (10), RS485 communication interface circuit (10) comprises MAX3485 chip, 3,4,1 pin is connected with 28,30,29 pin of C8051F312 single-chip microcomputer respectively, 2,3 pin are connected, its 5 pin ground connection, its 8 pin is by capacitor C 10 ground connection, and 6,7 pin are respectively by resistance R 16, R17 and upper machine communication.
9. smart table tennis according to claim 4 is clapped, it is characterized in that: described memory is eeprom memory (8), eeprom memory (8) adopts 24C256 chip, 1, the connected rear ground connection of 2,3,4 pin, its 8 pin connects the output of power circuit, and 6,5 pin are connected with 7,8 pin of C8051F312 single-chip microcomputer respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320819149.3U CN203694544U (en) | 2013-12-13 | 2013-12-13 | Intelligent table tennis bat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320819149.3U CN203694544U (en) | 2013-12-13 | 2013-12-13 | Intelligent table tennis bat |
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| Publication Number | Publication Date |
|---|---|
| CN203694544U true CN203694544U (en) | 2014-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320819149.3U Expired - Fee Related CN203694544U (en) | 2013-12-13 | 2013-12-13 | Intelligent table tennis bat |
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| CN (1) | CN203694544U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103599630A (en) * | 2013-12-13 | 2014-02-26 | 张中举 | Intelligent table tennis bat |
| CN105879338A (en) * | 2016-06-29 | 2016-08-24 | 韩辉 | Table tennis bat for training |
| CN106492440A (en) * | 2016-12-05 | 2017-03-15 | 上海理工大学 | The acquisition processing device of ping-pong ball drop point data and analysis system |
| CN106492428A (en) * | 2016-11-28 | 2017-03-15 | 渭南师范学院 | A kind of table tennis bat of having electronic monitoring function |
| CN106621241A (en) * | 2016-10-18 | 2017-05-10 | 上海理工大学 | Table tennis ball pressure and placement analysis system |
-
2013
- 2013-12-13 CN CN201320819149.3U patent/CN203694544U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103599630A (en) * | 2013-12-13 | 2014-02-26 | 张中举 | Intelligent table tennis bat |
| CN103599630B (en) * | 2013-12-13 | 2016-09-21 | 张中举 | Smart table tennis is clapped |
| CN105879338A (en) * | 2016-06-29 | 2016-08-24 | 韩辉 | Table tennis bat for training |
| CN106621241A (en) * | 2016-10-18 | 2017-05-10 | 上海理工大学 | Table tennis ball pressure and placement analysis system |
| CN106492428A (en) * | 2016-11-28 | 2017-03-15 | 渭南师范学院 | A kind of table tennis bat of having electronic monitoring function |
| CN106492440A (en) * | 2016-12-05 | 2017-03-15 | 上海理工大学 | The acquisition processing device of ping-pong ball drop point data and analysis system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140709 Termination date: 20141213 |
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| EXPY | Termination of patent right or utility model |