CN102614645A - Electronic display circuit for Taekwondo foot target - Google Patents
Electronic display circuit for Taekwondo foot target Download PDFInfo
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- CN102614645A CN102614645A CN2012100838325A CN201210083832A CN102614645A CN 102614645 A CN102614645 A CN 102614645A CN 2012100838325 A CN2012100838325 A CN 2012100838325A CN 201210083832 A CN201210083832 A CN 201210083832A CN 102614645 A CN102614645 A CN 102614645A
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Abstract
The invention discloses an electronic display circuit for a Taekwondo foot target. The signal system of the circuit consists of a sensor, a striking signal amplification link, a threshold value separation amplification link, an A/D conversion link, a data processing link, a drive amplification link and a display device and a driving module thereof. The working main body of the circuit is a signal processing/display/operating circuit which comprises a microcontroller chip, a digital potentiometer chip, an operational amplifier circuit, a display device driving module and a peripheral circuit thereof, which are in a serial interface mode. The sensor is connected with the striking signal amplification link through the strain gauge of the sensor, the striking signal amplification link is connected with the threshold value separation amplification link through a striking signal amplification output terminal, the A/D conversion link performs analog-digital conversion on the 'valid'-level and 'statistic'-level striking signals generated after separation by the threshold value separation amplification link respectively to generate 'valid'-level and 'statistic'-level striking force data respectively, and the data are processed by the data processing link and amplified by the drive amplification link and then displayed by the display device and the driving module thereof, and are displayed on the display device respectively.
Description
Technical field
The present invention relates to a kind of tae kwon do exercising device---the electronics display circuit of chicken tail target.
Background technology
Chicken tail target is tae kwon do and the similar project training apparatus commonly used that impacts.Yet the effect of chicken tail target at present is that the coaching staff makes in training and is used for obtaining sensation fully, the strike situation of judging and estimate the trainee with oneself sensation and experience then.This mode varies with each individual, and very big subjective factor is arranged, be difficult to accomplish objective, estimate training effect accurately, equitably.Therefore, demand urgently researching and developing a kind of can be used for objective, estimate boxing, tae kwon do and the similar method that impacts the project training effect accurately, equitably, and the enforcement of kind method, depending on simultaneously, exploitation has electronics checking system chicken tail target apparatus.This major part that has electronics checking system chicken tail target is exactly a kind of electronics display circuit.
Summary of the invention
Objective for realizing, estimate boxing, tae kwon do and the similar project training effect that impacts accurately, equitably, the present invention provides a kind of electronics display circuit of breaktest chicken tail target.The signal system of circuit by sensor, impact signal amplifying element, threshold value and separate amplifying element, A/D conversion links, data link, drive amplifying element and display and driver module thereof and form.The operative body of circuit is signal processing, demonstration and function circuit, and it is by microcontroller chip, digital regulation resistance chip, discharge circuit chip, and display driver module and peripheral circuit thereof are formed with serial interface mode.Sensor is connected to through its foil gauge lead-in wire and impacts the signal amplifying element; Impact the signal amplifying element and amplify lead-out terminal, separate amplifying element with threshold value and be connected through impacting signal; The A/D conversion links will be carried out analog-to-digital conversion respectively through " effectively " level after threshold value is separated the amplifying element separation and " statistics " level impact force signal, make it to become respectively " effectively " level and " statistics " level impact force data; These data are handled through the demonstration of display and driver module thereof after the amplifying element amplification is handled and driven to the data link, on display, show respectively.
The technical solution adopted for the present invention to solve the technical problems is:
The signal system of circuit by sensor, impact signal amplifying element, threshold value and separate amplifying element, A/D conversion links, data link, drive amplifying element and display and driver module thereof and form.The core of circuit is signal processing, demonstration and function circuit, and it is by microcontroller chip, digital regulation resistance chip, discharge circuit chip, and display driver module and peripheral circuit thereof are formed with serial interface mode.Microcontroller chip adopts ATMEGA8L type low-tension supply Low-Power CMOS device; The digital regulation resistance chip adopts AD5161 type low-tension supply device; The discharge circuit chip adopts OPA2333 type low pressure single supply double operational device, and display and driver module thereof adopt SO12864 type low-tension supply low energy-consumption electronic device.
Sensor is connected to and impacts the signal amplifying element through resistance two lead ends of preceding foil gauge and resistance two lead ends of back foil gauge; Impact the signal amplifying element and amplify lead-out terminal, will impact signal and send into threshold value separation amplifying element through impacting signal; Threshold value is separated the threshold value that the amplifying element utilization is provided with, and will impact signal and carry out " effectively " level and separate with " statistics " grade impact force signal; " effectively " level after the A/D conversion links will be separated is carried out analog-to-digital conversion respectively with " statistics " level impact force signal, makes it to become respectively " effectively " level and " statistics " level impact force data; " effectively " level and " statistics " level impact force data are handled through the demonstration of display driver module respectively after the data link is handled and driven amplifying element and amplifies, and keep off by " effectively " retaining and " statistics ", on display, show respectively.
At the head of target body, the sensor of accepting touching and impact force is installed, the face of sensor is forward; Middle afterbody hand thumb at target body can and be located, and is equipped with the power supply/demonstration change-over switch that is used for switching power supply/switching display and working state of system; In target body, below the change-over switch of afterbody, be equipped with the display that is used to show record, statistics or duty; In the afterbody front of target body, the numerical value that assembly is useful on the default value setting is provided with key.
At the sensor signal converter section, the ultra-thin prime substrate of an elastic metallic disc, the center has pressure transmission hole, and the Wai Yuan edge is welded on the Bottle & Can shape housing of signal conversion part and answers on the dialectal switching mouth neck inwall, and its one side outside mouth is closely pasted annulus dish type prime foil gauge; The Wai Yuan edge of level substrate is welded on the inwall of signal conversion part housing near the bottom after the one elastic metallic disc, and its one side outside mouth is closely pasted back level foil gauge; The resistance two ends of prime foil gauge and through the touching signal lead draw; The resistance two ends of back level foil gauge and draw through the impulse force signal lead.
The invention has the beneficial effects as follows: utilize the structure of existing chicken tail target and trainee's stroke; Obtain the impact force signal; Under the prerequisite that does not change capable chicken tail target structure, handle through signal digital, realized that detection, calculating, the demonstration of performance assessment criteria is integrated.In addition,, make clean and tidy, the simple in structure and very easily standardization of whole device because circuit adopted low energy-consumption electronic device, can be with multi-form, supporting as the index measuring ability of body standard equipment, body-building apparatus etc., produce in batches.
Description of drawings
Below in conjunction with embodiment shown in the drawings the present invention is further specified.
Fig. 1 is one embodiment of the present of invention---the positive facial contour sketch map of tae kwon do chicken tail target.
Fig. 2 is a tae kwon do chicken tail target electronics checking system structured flowchart of the present invention.
Fig. 3 is that touching of the present invention and impulse force detect and impact the signal amplification circuit structure chart.
Fig. 4 is signal processing of the present invention, demonstration and function circuit structure chart.
Fig. 5 is that the chicken tail target of embodiment of the invention structure is puted forth effort position A-A to analysing and observe partial schematic diagram.
Fig. 6 is the sensor construction side schematic view of the embodiment of the invention.
Fig. 7 is the signal conversion part structure cutaway view of sensor.
In Fig. 1～7: 1. target body, 1.1. matrix, 1.2. elastic inner layer, 1.3. elasticity top layer, 1.4. epidermis; 2. sensor, 2.1. notacoria, 2.2. cephacoria, 2.3. liquid, 2.4. connecting pipe; 2.5. the prime foil gauge, 2.5.1 prime substrate, 2.6. touches signal lead, level foil gauge behind the 2.7., level substrate behind the 2.7.1; 2.8. the impulse force signal lead, the 2.9. signal conversion part, 3. power supply/demonstration change-over switch, 4. numerical value is provided with key, 5. display.
In Fig. 2～7: a
1, b
1Be resistance two lead ends of preceding foil gauge 2.5, a
2, b
2Be resistance two lead ends of back foil gauge 2.7, A
mFor impacting the signal amplifying element, s amplifies lead-out terminal for impacting signal, and SD is that threshold value is separated amplifying element, and A/D is the A/D conversion links, and Pro is the data link, D
rA is for driving amplifying element, and U4 is display (a 5) driver module.In Fig. 3: R
S1Be preceding foil gauge brachium pontis balance resistance, R
S2Be back foil gauge brachium pontis balance resistance, U
0Be prime operational amplifier, R
S3Be operating point biasing resistance, R
S4Be feedback current bias resistance, R
eBe the virtual earth divider resistance, E/2 is a working power virtual ground potential point, and D is the TVS diode.
In Fig. 4: U1 is a microcontroller chip, and U2 is the digital regulation resistance chip, and U3 is the discharge circuit chip; X1 is a quartz crystal; C1 is first oscillating capacitance, and C2 is first filter capacitor, and C3 is the 3rd filter capacitor, and C4 is second oscillating capacitance, and C5 is a buffer capacitor; D1 is a discharge diode, and D2 is a catching diode, and D3 is a TVS diode, and D4 is the 2nd TVS diode; R1 is first pull-up resistor, and R2 is first coupling resistance, and R3 is second coupling resistance, and R4 is the 4th pull-up resistor; R5 is second filter resistance, and R6 is the filtering divider resistance, and R7 is a feedback resistance, and R8 is a divider resistance; R9 is the 9th pull-up resistor, and R10 is the tenth pull-up resistor, and R11 is the 11 pull-up resistor; R12 is the 12 pull-up resistor, and R13 is the 13 pull-up resistor, and E is a battery.
The specific embodiment
In the positive facial contour sketch map of the tae kwon do chicken tail target shown in the accompanying drawing 1:
At the head of target body 1, the sensor 2 of accepting touching and impact force is installed, the face of sensor 2 is forward; Middle afterbody hand thumb at target body 1 can and be located, and is equipped with the power supply/demonstration change-over switch 3 that is used for switching power supply/switching display and working state of system; In target body 1, below the change-over switch 3 of afterbody, be equipped with the display 5 that is used to show record, statistics or duty; In the afterbody front of target body 1, the numerical value that assembly is useful on the default value setting is provided with key 4.
Power supply/demonstration change-over switch 3 is for having flat three toggle switches of formula double-pole of dialling of anti-false touch, shockproof transmission mechanism; Numerical value is provided with key 4 and is wear-resistant conductive adhesive film double-pole unit button; Display 5 shows liquid crystal display for the dot matrix that is separated into front three numeral and back three bit digital with the ratio symbol.
When power supply/demonstration change-over switch 3 pushes " record " position, front three numeral " effectively " record of display 5, back three bit digital are represented " statistics " record; When power supply/demonstration change-over switch 3 pushes " threshold value " position; Numerical value is provided with key 4 actions and comes into force; Can intermittently cooperate through the operation length that numerical value is provided with key 4; Realize the setting of " effectively " and " statistics " threshold value, front three numeral " effectively " the impact force threshold value of display 5, back three bit digital are represented " statistics " impact force threshold value; When power supply/demonstration change-over switch 3 pushes " pass " position, display 5 blank screens.
In tae kwon do chicken tail target electronics checking system structured flowchart shown in Figure 2: system by sensor 2, impact signal amplifying element A
m, threshold value separates amplifying element SD, A/D conversion links A/D, data link Pro, drives amplifying element D
rA and display (5) driver module U4 forms.Sensor 2 is through the resistance two lead end a of preceding foil gauge 2.5
1, b
1Resistance two lead end a with back foil gauge 2.7
2, b
2, be connected to and impact signal amplifying element A
mImpact signal amplifying element A
mAmplify lead-out terminal s through impacting signal, will impact signal and send into threshold value separation amplifying element SD; Threshold value is separated amplifying element SD and is utilized the threshold value that is provided with, and will impact signal and carry out " effectively " level and separate with " statistics " grade impact force signal; " effectively " level after A/D conversion links A/D will separate is carried out analog-to-digital conversion respectively with " statistics " level impact force signal, makes it to become respectively " effectively " level and " statistics " level impact force data; Amplifying element D is handled and driven to " effectively " level with " statistics " level impact force data through data link Pro
rAfter A amplifies, handle through the demonstration of display (5) driver module U4 respectively, keep off by " effectively " retaining and " statistics ", show respectively on the display 5.
Detect and impact in the signal amplification circuit structure chart in touching shown in Figure 3 and impulse force: one of prime foil gauge 2.5 resistance of sensor 2 lead end a
1With impact signal amplifying element A
mPreceding foil gauge brachium pontis balance resistance R
S1An end connect its tie point and prime operational amplifier U
0"+" signal input part connect; Preceding foil gauge brachium pontis balance resistance R
S1The other end hold connection together; Two lead end b of prime foil gauge 2.5 resistance of sensor 2
1With impact signal amplifying element A
mAnodal connection of working power.One of back level foil gauge 2.7 resistance of sensor 2 lead end a
2Hold connection together; Two lead end b of back level foil gauge 2.7 resistance of sensor 2
2With impact signal amplifying element A
mBack foil gauge brachium pontis balance resistance R
S2An end connect its tie point and prime operational amplifier U
0"-" signal input part connect; Back foil gauge brachium pontis balance resistance R
S2The other end with impact signal amplifying element A
mAnodal connection of working power.Impacting signal amplifying element A
mIn, operating point biasing resistance R
S3An end and operational amplifier A
T"+" signal input part connect, the other end is connected with working power virtual ground potential point E/2; The feedback current bias resistance R
S4An end and operational amplifier A
T"-" signal input part connect the other end and operational amplifier A
TSignal output part connect; Operational amplifier A
TSignal output part amplify lead-out terminal s as impacting signal.Impacting signal amplifying element A
mThe anodal and working power virtual ground potential point E/2 of working power between, cross-over connection has virtual earth divider resistance R
eBetween working power virtual ground potential point E/2 held together, cross-over connection had TVS diode D, and the positive terminal tie point of TVS diode D promptly becomes working power virtual ground potential point E/2, is commonly and holds.
In signal processing shown in Figure 4, demonstration and function circuit structure chart:
Signal processing, demonstration and function circuit are by microcontroller chip U1, digital regulation resistance chip U2, discharge circuit chip U3, and display driver module U4 and peripheral circuit thereof are formed with serial interface mode.Microcontroller chip U1 adopts ATMEGA8L type low-tension supply Low-Power CMOS device; Digital regulation resistance chip U2 adopts AD5161 type low-tension supply device; Discharge circuit chip U3 adopts OPA2333 type low pressure single supply double operational device, and display (5) driver module U4 adopts SO12864 type low-tension supply low energy-consumption electronic device.
The two ends of quartz crystal X1 are connected respectively to the pin 9 and pin 10 of microcontroller chip U1, and are connected with the end of the first oscillating capacitance C1 and the end of the second oscillating capacitance C4 respectively; The equal ground connection of the other end of the other end of the first oscillating capacitance C1 and the second oscillating capacitance C4.The positive pole of discharge diode D1 is connected to the working power positive pole, and the negative pole of discharge diode D1 is connected with the end of buffer capacitor C5 and the end of the first pull-up resistor R1 simultaneously, and this tie point is connected to the pin 1 of microcontroller chip U1; The other end ground connection of buffer capacitor C5; The other end of the first pull-up resistor R1 is connected to the working power positive pole.
The pin 27 of microcontroller chip U1 is connected with the end of the 4th pull-up resistor R4 and the end of the 9th pull-up resistor R9 respectively with 28, and this two tie point is connected respectively to the pin 5 and 6 of digital regulation resistance chip U2; The other end of the other end of the 4th pull-up resistor R4 and the 9th pull-up resistor R9 all is connected to the working power positive pole; The pin 4 of microcontroller chip U1 is connected with the end of the tenth pull-up resistor R10 and the 11 pull-up resistor R11 respectively with 5, and this two tie point is connected respectively to the terminal 2 and terminal 3 that numerical value is provided with key 4; The pin 6 of microcontroller chip U1 is connected with the positive pole of a TVS diode D3 and the end of the first coupling resistance R2 simultaneously; The minus earth of the one TVS diode D3; The other end of the first coupling resistance R2 is connected to the pin 1 of discharge circuit chip U3; The pin 7,20 of microcontroller chip U1 all is connected to the working power positive pole; Pin 8, the 22 equal ground connection of microcontroller chip U1; The pin 13 of microcontroller chip U1 is connected to the pin 10 of digital regulation resistance chip U2; The pin 13 of microcontroller chip U1 is connected with the positive pole of the 2nd TVS diode D4 and the end of the second coupling resistance R3 simultaneously; The minus earth of the 2nd TVS diode D4; The other end of the second coupling resistance R3 is connected to the pin 7 of discharge circuit chip U3; The pin 18,19,23,24,25,26,2,3,11 and 21 of microcontroller chip U1 is all unsettled.
Numerical value is provided with the terminal 2 of key 4 and the terminal 6 and terminal 8 that terminal 3 is connected respectively to power supply/demonstration change-over switch 3.
The pin 4 of discharge circuit chip U3 is connected to the working power positive pole; Pin 2 ground connection of discharge circuit chip U3; The pin 3 of discharge circuit chip U3 is connected with the positive pole of catching diode D2; The negative pole of catching diode D2 is connected with the end of the 3rd filter capacitor C3, and this tie point is connected to the pin 7 of discharge circuit chip U3; The pin 5 of discharge circuit chip U3 is connected with the end of the first filter capacitor C2 and the end of the second filter resistance R5 simultaneously; The other end ground connection of the first filter capacitor C2; The pin 6 of discharge circuit chip U3 is connected with the end of the end of feedback resistance R7 and divider resistance R8 simultaneously, and the other end of feedback resistance R7 is connected to the pin 7 of discharge circuit chip U3; The other end ground connection of divider resistance R8; Pin 8 ground connection of discharge circuit chip U3.The other end of the second filter resistance R5 is connected with the end of filtering divider resistance R6 and the other end of the 3rd filter capacitor C3; The other end of filtering divider resistance R6 is connected to and impacts signal amplifying element A
mThe signal that impacts amplify lead-out terminal s.
The terminal 7 and the terminal 4 equal ground connection of power supply/demonstration change-over switch 3, the terminal 1 and the terminal 3 of power supply/demonstration change-over switch 3 all are connected to the working power positive pole, and the power supply/terminal 2 of demonstration change-over switch 3 is connected to the positive pole of battery E, the minus earth of battery E.
Put forth effort position A-A in analysing and observe partial schematic diagram and sensor construction side schematic view shown in Figure 3 at chicken tail target shown in Figure 5,, strengthen elastic inner layer 1.2 with plane adhesive rubber matter in the head front side of chicken tail target matrix 1.1; Elastic inner layer 1.2 is paraboloid of revolution shape by middle mind-set edge transition, by thick attenuation; The paraboloid of revolution top of elastic inner layer 1.2 is towards preceding, and processes the recess face of inlaying sensor 2; In elastic inner layer 1.2 front sides, with curved surface adhesive latex matter elasticity top layer 1.3, elasticity top layer 1.3 is expanded and is prolonged the target neck place that covers matrix 1.1; Leather matter epidermis 1.4 with said structure according to the target body shape parcel that compacts; Sensor 2 is embedded between elastic inner layer 1.2 and the elasticity top layer 1.3, and its notacoria 2.1 presses on the recess face that is bonded in elastic inner layer 1.2, and its cephacoria 2.2 presses bonding with elasticity top layer 1.3.
In sensor construction side schematic view shown in Figure 6, paraboloid of revolution shape notacoria 2.1 is processed for elastomeric material with paraboloid of revolution shape cephacoria 2.2, and connecting pipe 2.4 is processed for rigid material; The inner concave of the inner concave of notacoria 2.1 and cephacoria 2.2 closes button, and the top perforate of notacoria 2.1 is connected with an end transition of connecting pipe 2.4 with the hyperboloid shape; The other end of connecting pipe 2.4 answers dialectal switching to be connected with the Bottle & Can shape of signal conversion part 2.9; Notacoria 2.1, cephacoria 2.2, connecting pipe 2.4 constitute the water-tight closure cavity with signal conversion part 2.9, and inside is full of oil emulsion liquid 2.3.
In sensor signal converter section structure cutaway view shown in Figure 7; The ultra-thin prime substrate of one elastic metallic disc 2.5.1; The center has pressure transmission hole; The Wai Yuan edge is welded on the Bottle & Can shape housing of signal conversion part 2.9 and answers on the dialectal switching mouth neck inwall, and its one side outside mouth is closely pasted annulus dish type prime foil gauge 5; The Wai Yuan edge of level substrate 2.7.1 is welded on the inwall of signal conversion part 2.9 housings near the bottom after the one elastic metallic disc, and its one side outside mouth is closely pasted back level foil gauge 2.7; The resistance two ends a of prime foil gauge 2.5
1And b
1Draw through touching signal lead 2.6; The resistance two ends a of back level foil gauge 2.7
2And b
2Draw through impulse force signal lead 2.8.
Claims (1)
1. tae kwon do chicken tail target electronics display circuit is characterized in that: the signal system of circuit by sensor, impact signal amplifying element, threshold value and separate amplifying element, A/D conversion links, data link, drive amplifying element and display and driver module thereof and form; The core of circuit is signal processing, demonstration and function circuit, and it is by microcontroller chip, digital regulation resistance chip, discharge circuit chip, and display driver module and peripheral circuit thereof are formed with serial interface mode; Microcontroller chip adopts ATMEGA8L type low-tension supply Low-Power CMOS device; The digital regulation resistance chip adopts AD5161 type low-tension supply device; The discharge circuit chip adopts OPA2333 type low pressure single supply double operational device, and display and driver module thereof adopt SO12864 type low-tension supply low energy-consumption electronic device;
Sensor is connected to and impacts the signal amplifying element through resistance two lead ends of preceding foil gauge and resistance two lead ends of back foil gauge; Impact the signal amplifying element and amplify lead-out terminal, will impact signal and send into threshold value separation amplifying element through impacting signal; Threshold value is separated the threshold value that the amplifying element utilization is provided with, and will impact signal and carry out " effectively " level and separate with " statistics " grade impact force signal; " effectively " level after the A/D conversion links will be separated is carried out analog-to-digital conversion respectively with " statistics " level impact force signal, makes it to become respectively " effectively " level and " statistics " level impact force data; " effectively " level and " statistics " level impact force data are handled through the demonstration of display driver module respectively after the data link is handled and driven amplifying element and amplifies, and keep off by " effectively " retaining and " statistics ", on display, show respectively;
When power supply/demonstration change-over switch pushes " record " position, front three numeral " effectively " record of display, back three bit digital are represented " statistics " record; When power supply/demonstration change-over switch pushes " threshold value " position; Numerical value is provided with the key action and comes into force; Can intermittently cooperate through the operation length that numerical value is provided with key; Realize the setting of " effectively " and " statistics " threshold value, front three numeral " effectively " the impact force threshold value of display, back three bit digital are represented " statistics " impact force threshold value; When power supply/demonstration change-over switch pushes " pass " position, display 5 blank screens.
2 tae kwon do chicken tail target electronics checking systems according to claim 1 is characterized in that: one of prime foil gauge 2.5 resistance of sensor 2 lead end a
1With impact signal amplifying element A
mPreceding foil gauge brachium pontis balance resistance R
S1An end connect its tie point and prime operational amplifier U
0"+" signal input part connect; Preceding foil gauge brachium pontis balance resistance R
S1The other end hold connection together; Two lead end b of prime foil gauge 2.5 resistance of sensor 2
1With impact signal amplifying element A
mAnodal connection of working power; One of back level foil gauge 2.7 resistance of sensor 2 lead end a
2Hold connection together; Two lead end b of back level foil gauge 2.7 resistance of sensor 2
2With impact signal amplifying element A
mBack foil gauge brachium pontis balance resistance R
S2An end connect its tie point and prime operational amplifier U
0"-" signal input part connect; Back foil gauge brachium pontis balance resistance R
S2The other end with impact signal amplifying element A
mAnodal connection of working power; Impacting signal amplifying element A
mIn, operating point biasing resistance R
S3An end and operational amplifier A
T"+" signal input part connect, the other end is connected with working power virtual ground potential point E/2; The feedback current bias resistance R
S4An end and operational amplifier A
T"-" signal input part connect the other end and operational amplifier A
TSignal output part connect; Operational amplifier A
TSignal output part amplify lead-out terminal s as impacting signal; Impacting signal amplifying element A
mThe anodal and working power virtual ground potential point E/2 of working power between, cross-over connection has virtual earth divider resistance R
eBetween working power virtual ground potential point E/2 held together, cross-over connection had TVS diode D, and the positive terminal tie point of TVS diode D promptly becomes working power virtual ground potential point E/2, is commonly and holds.
3 tae kwon do chicken tail target electronics checking systems according to claim 1; It is characterized in that: pin 9 and the pin 10 of microcontroller chip U1 are connected respectively to the two ends of quartz crystal X1, and are connected with the end of the first oscillating capacitance C1 and the end of the second oscillating capacitance C4 respectively; The equal ground connection of the other end of the other end of the first oscillating capacitance C1 and the second oscillating capacitance C4; The positive pole of discharge diode D1 is connected to the working power positive pole, and the negative pole of discharge diode D1 is connected with the end of buffer capacitor C5 and the end of the first pull-up resistor R1 simultaneously, and this tie point is connected to the pin 1 of microcontroller chip U1; The other end ground connection of buffer capacitor C5; The other end of the first pull-up resistor R1 is connected to the working power positive pole;
The pin 27 of microcontroller chip U1 is connected with the end of the 4th pull-up resistor R4 and the end of the 9th pull-up resistor R9 respectively with 28, and this two tie point is connected respectively to the pin 5 and 6 of digital regulation resistance chip U2; The other end of the other end of the 4th pull-up resistor R4 and the 9th pull-up resistor R9 all is connected to the working power positive pole; The pin 4 of microcontroller chip U1 is connected with the end of the tenth pull-up resistor R10 and the 11 pull-up resistor R11 respectively with 5, and this two tie point is connected respectively to the terminal 2 and terminal 3 that numerical value is provided with key 4; The pin 6 of microcontroller chip U1 is connected with the positive pole of a TVS diode D3 and the end of the first coupling resistance R2 simultaneously; The minus earth of the one TVS diode D3; The other end of the first coupling resistance R2 is connected to the pin 1 of discharge circuit chip U3; The pin 7,20 of microcontroller chip U1 all is connected to the working power positive pole; Pin 8, the 22 equal ground connection of microcontroller chip U1; The pin 13 of microcontroller chip U1 is connected to the pin 10 of digital regulation resistance chip U2; The pin 13 of microcontroller chip U1 is connected with the positive pole of the 2nd TVS diode D4 and the end of the second coupling resistance R3 simultaneously; The minus earth of the 2nd TVS diode D4; The other end of the second coupling resistance R3 is connected to the pin 7 of discharge circuit chip U3; The pin 18,19,23,24,25,26,2,3,11 and 21 of microcontroller chip U1 is all unsettled.
4 tae kwon do chicken tail target electronics checking systems according to claim 1; It is characterized in that: pin 1, the 7 equal ground connection of display (5) driver module U4; The pin 2,3,4 and 5 of display (5) driver module U4 is connected respectively to the pin 14,15,16 and 17 of microcontroller chip U1, and the pin 6,8 of display (5) driver module U4 all is connected to the working power positive pole; All the other pins of display (5) driver module U4 are all unsettled.
5 tae kwon do chicken tail target electronics checking systems according to claim 1 is characterized in that: pin 2, the 3 equal ground connection of digital regulation resistance chip U2; The pin 10 of digital regulation resistance chip U2 is connected with the end of the 12 pull-up resistor R12 and the end of the 13 pull-up resistor R13 respectively with 8, and the other end of the 12 pull-up resistor R12 and the other end of the 13 pull-up resistor R13 are connected to the working power positive pole; The pin 9 of digital regulation resistance chip U2 is connected to the working power positive pole; Pin 7 ground connection of digital regulation resistance chip U2; The pin 1,4 of digital regulation resistance chip U2 is all unsettled.
6 tae kwon do chicken tail target electronics checking systems according to claim 1, it is characterized in that: the pin 4 of discharge circuit chip U3 is connected to the working power positive pole; Pin 2 ground connection of discharge circuit chip U3; The pin 3 of discharge circuit chip U3 is connected with the positive pole of catching diode D2; The negative pole of catching diode D2 is connected with the end of the 3rd filter capacitor C3, and this tie point is connected to the pin 7 of discharge circuit chip U3; The pin 5 of discharge circuit chip U3 is connected with the end of the first filter capacitor C2 and the end of the second filter resistance R5 simultaneously; The other end ground connection of the first filter capacitor C2; The pin 6 of discharge circuit chip U3 is connected with the end of the end of feedback resistance R7 and divider resistance R8 simultaneously, and the other end of feedback resistance R7 is connected to the pin 7 of discharge circuit chip U3; The other end ground connection of divider resistance R8; Pin 8 ground connection of discharge circuit chip U3; The other end of the second filter resistance R5 is connected with the end of filtering divider resistance R6 and the other end of the 3rd filter capacitor C3; The other end of filtering divider resistance R6 is connected to and impacts signal amplifying element A
mThe signal that impacts amplify lead-out terminal s.
7 tae kwon do chicken tail target electronics checking systems according to claim 1 is characterized in that: numerical value is provided with the terminal 2 of key 4 and the terminal 6 and terminal 8 that terminal 3 is connected respectively to power supply/demonstration change-over switch 3.
8 tae kwon do chicken tail target electronics checking systems according to claim 1; It is characterized in that: the terminal 7 and the terminal 4 equal ground connection of power supply/demonstration change-over switch 3; The terminal 1 and the terminal 3 of power supply/demonstration change-over switch 3 all are connected to the working power positive pole; Power supply/the terminal 2 of demonstration change-over switch 3 is connected to the positive pole of battery E, the minus earth of battery E.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210083832.5A CN102614645B (en) | 2012-03-27 | 2012-03-27 | Electronic display circuit for Taekwondo foot target |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210083832.5A CN102614645B (en) | 2012-03-27 | 2012-03-27 | Electronic display circuit for Taekwondo foot target |
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| CN102614645B CN102614645B (en) | 2014-07-02 |
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| CN102921164A (en) * | 2012-11-15 | 2013-02-13 | 江南大学 | Electronic assessment system of taekwondo cocktail target |
| CN105561568A (en) * | 2016-01-04 | 2016-05-11 | 南京铁道职业技术学院 | Weightlifting training force monitoring instrument and method thereof |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN102614645B (en) | 2014-07-02 |
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