CN207473046U - A kind of test system of remote control circuitry plate - Google Patents
A kind of test system of remote control circuitry plate Download PDFInfo
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- CN207473046U CN207473046U CN201721221646.8U CN201721221646U CN207473046U CN 207473046 U CN207473046 U CN 207473046U CN 201721221646 U CN201721221646 U CN 201721221646U CN 207473046 U CN207473046 U CN 207473046U
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Abstract
The utility model provides a kind of test system of remote control circuitry plate in remote controler technical field of measurement and test, including tester, liftable test dials and several test position fix fixtures fixed and for clamping circuit board, it tests dials and is equipped with several one-to-one testing needles of test point with each circuit board, test dials is arranged on the surface of test position fix fixture, the test signal that circuit board is corresponded to test point by testing needle is transferred to tester by testing dials, and circuit board test tester and the test information of display circuit board；The utility model can test multiple circuit boards simultaneously, and high degree of automation can effectively ensure that test accuracy rate, improve testing efficiency.
Description
Technical field
The present invention relates to a kind of positioning fixtures, more particularly to a kind of to be used for positioning the tool for clamping pcb board.
Background technology
The prior art is using product model machine as standard, reads in its infrared code value and preserves, carries out product test pair again later
Than test, infrared decoding can only be carried out, manual operation and artificial is required for including projects such as button, electric current, pattern lamp, backlights
Judge, cause the operating time long and often occur the problem of easily erroneous judgement by accident, test accuracy rate can not ensure, a people can only test simultaneously
1 product, testing efficiency are low.
Invention content
For the defects in the prior art, it is an object of the invention to solve the low technology of testing efficiency in the prior art
Problem, provides a kind of test system of remote control circuitry plate, and high degree of automation of the invention can effectively ensure that test is accurate
Rate, testing efficiency are high.
The object of the present invention is achieved like this：A kind of test system of remote control circuitry plate, including tester, liftable
Test dials and several are fixed and for clamping test position fix fixtures of circuit board, if the test dials is equipped with
The dry one-to-one testing needle of test point with each circuit board, test dials are arranged on the surface of test position fix fixture,
The test signal that circuit board is corresponded to test point by the testing needle is transferred to tester by testing dials, and the tester includes
Main control chip U8, power circuit, voltage detecting circuit, power supply control power consumption detection circuit, warning circuit, analog matrix button electricity
Road and display screen, the power circuit is to power supply control power consumption detection circuit, warning circuit, display screen, main control chip U8 and electricity
Road plate power supply, the supply voltage of the voltage detecting circuit detection circuit plate are simultaneously transferred to main control chip U8, the main control chip
U8 controls the action of power supply control power consumption detection circuit, power supply control power consumption detection according to the supply voltage of the circuit board received
Circuit is discharged according to the control signal of main control chip U8 circuit board or current measurement, current measurement value are transferred to master control core
Piece U8；The analog matrix key circuit is used for the button in analog circuit board, and push button signalling transmission is fed back to master by circuit board
Control chip U8, the main control chip U8 is according to voltage detecting value, current measurement value and the push button signalling control alarm electricity received
The action on road, main control chip U8 will test information and be sent to display screen, the test information of display circuit board on display screen.
During present invention work, for voltage detecting circuit by the voltage of testing needle looping test circuit board, voltage detecting circuit will
The voltage signal detected is sent to main control chip, and whether the determining program in main control chip judges voltage in normal range (NR), if
When circuit abnormality causes output voltage higher or is relatively low, main control chip is by controlling power supply control power consumption detection circuit to make circuit board
Discharge condition is immediately entered, stops powering to circuit board, main control chip control warning circuit sound-light alarm；It is main during current measurement
Control chip controls power supply power consumption detection circuit, which enters current measurement state and current measurement value is sent to main control chip, carries out AD
Conversion obtains current value, and whether main control chip is abnormal according to the current value of current value decision circuitry plate received, if electric current is different
Often, main control chip control warning circuit sends out sound-light alarm；Analog matrix key circuit realizes analogue-key, and circuit board is by button
By sending infrared code to infrared receiving circuit, infrared receiving diode IR_IN receives infrared code signal and locates feedback signal
Main control chip is sent to after reason, main control chip judges whether button is normal according to the infrared signal received, if button is abnormal,
Main control chip control warning circuit sends out sound-light alarm；In above all of test, when it is all test by when, warning circuit
Always it does not work and shows screen display " pass " as long as there is a test not pass through, then warning circuit sound-light alarm, and show
Screen display " fail " and corresponding test do not pass through information；Compared with prior art, the present invention automatically testing of the present invention is more
It plants type and multiple circuit boards can be tested simultaneously, improve testing efficiency；Electric discharge, the voltage conversion of circuit board are controllable, improve test
Accuracy rate；Present invention can apply to test in the work of remote control circuitry plate.
In order to realize the electric signal transmission of circuit board and tester, if being detachably connected on the test position fix fixture
Dry accumulator, the accumulator are corresponded with circuit board, and accumulator is electrically connected with test dials, and the test dials passes through
Winding displacement U13 with 40 pins is electrically connected with tester, and the power circuit includes 5V regulator circuits and circuit board power supply electricity
Road, accumulator are consumed as 5V regulator circuits and the input power of circuit board power supply circuit, the 5V regulator circuits to power supply control
Power detection circuit, warning circuit, display screen and main control chip U8 power supplies, 5V regulator circuits output 5V voltages, 5V voltages Vcc tables
Show, the out-put supply Vdd of the circuit board power supply circuit powers to circuit board.
For the power consumption condition of control circuit board, the power supply control power consumption detection circuit includes optical coupling isolator U7, electricity
One end of source Vcc connection resistance R33, the cathode of the other end connection optical coupling isolator U7 of resistance R33, the optical coupling isolator U7
Anode connection main control chip U8 P3.6 ports, the one of the collector connection resistance R54 and resistance R59 of optical coupling isolator U7
End, the base stage of resistance R59 connection PNP type triodes Q2, the other end of power supply Vdd connection resistance R54, the emitter of triode Q2
With the anode of circuit board input power, cathode, the resistance R48 mono- of the collector connection circuit board input power of the triode Q2
End, the drain electrode of N-channel field-effect tube Q1 and resistance R51 one end, the same phase of the other end connection amplifier chip U9 of the resistance R51
Input terminal, grid connection resistance R49 one end of field-effect tube Q1, the P3.7 ports of resistance R49 other ends connection main control chip U8,
5V voltages are powered to amplifier chip U9, inverting input connection resistance R55 one end of amplifier chip U9, the output of amplifier chip U9
Mouth connects the P1.0 ports of resistance R55 one end, resistance R52 one end, capacitance C13 one end and main control chip U8, and the resistance R52 is another
One end connection variable resistance R5 one end, adjustable resistance R5 other ends connection resistance R55 one end, the resistance R48 other ends, field effect
Should source electrode, the resistance R50 other ends and the resistance R55 other ends of pipe Q1 be grounded.
Whether normal for the input supply voltage of detection circuit plate, the voltage detecting circuit includes resistance R80, circuit
Plate input power connection resistance R80 one end, the resistance R80 other ends connect one end of resistance R62 and resistance R81, and resistance R62 is another
The P1.1 ports of end connection main control chip U8, resistance R81 other ends ground connection；The main control chip U8 is according to the circuit board received
The break-make of the voltage signal control triode Q2 and field-effect tube Q1 of input power.
For the key testing of automatic imitation circuit board, the analog matrix key circuit selects 1 simulation to open including 28
Close chip U2 and U3, the enable port of P0.3 ports connection analog switch chip U2 of the main control chip U8 and analog switch core
The enable port of piece U3, common end of the common end of the analog switch chip U2 through resistance R5 connection analog switch chips U3,
The independent input port x 0 of analog switch chip U2, X1 ... the 1st pin of X8 difference connection cables U13, the 2nd pin ...
8th pin, the independent input port x 0 of the analog switch chip U3, X1 ... X8 connects the 9th pin of U13, the 10th respectively
Pin ..., the 16th pin, P0.0 ports, P0.1 ports and the P0.2 ports of main control chip U8 connect analog switch chip respectively
3 number selection ends of U2, P0.4 ports, P0.5 ports and the P0.6 ports of main control chip U8 connect analog switch chip respectively
3 number selection ends of U3.
In order to which whether the button on test circuit plate is normal, the tester further includes infrared receiving circuit, described infrared
Receiving circuit includes power Vcc, described power Vcc connection resistance R67 one end and capacitance C35 one end, the 35th pin of winding displacement U13
Connect resistance R75 one end, resistance R67 other ends connection resistance R68, resistance R70 and resistance R27 one end, the resistance R75 other ends and
The cathode of resistance R68 other ends connection resistance R69 one end, capacitance C36 one end and infrared receiving diode IR _ IN, the resistance
R69 connects the base stage of PNP type triode Q6, the current collection of the other end connecting triode Q6 of resistance R70 with the other end of capacitance C36
The base stage of pole, capacitance C37 one end and PNP type triode Q7, the collector and electricity of the resistance R27 other end connecting triodes Q7
Hinder R53 one end, the input terminal of the single NOT gate chip U14 of other end connection of the resistance R53, the input terminal of single NOT gate chip U15
With resistance R17 one end, output terminal connection resistance R21 one end of single NOT gate chip U14, resistance R21 other ends connection light-emitting diodes
The anode of pipe D1, the P3.2 ports of the other end connection main control chip U8 of the resistance R17, the list NOT gate chip U15's is defeated
The P3.3 ports of outlet connection main control chip U8；The anode of the infrared receiving diode IR _ IN, the emitter of triode Q6,
The cathode of the other end of capacitance C37, the emitter of triode Q7 and light emitting diode D1 is grounded.
In order to which whether the LED light tested on remote control circuitry plate works normally, the tester further includes several groups of LED and surveys
Circuit is tried, the LED test circuits include the negative of reception diode LED _ IN, 5V voltage connection reception diode LED _ IN
Pole, anode connection resistance R19 one end of diode (LED) _ IN and resistance R22 one end, the resistance R22 other ends connect master control core
The P1.2 ports of piece U8, the resistance R22 other ends are LED test signal input port, and the other end of resistance R19 is grounded；Difference group LED
The LED test signal input port I/0 mouthfuls of connections different from main control chip U8's of test circuit, the main control chip U8 is according to reception
It is abnormal whether the LED test signal decision circuitry onboard led lamp arrived shines.
In order to improve the alternative of test job, 4 mode selection buttons, institute are connected on the shell of the tester
It states mode selection button and push button signalling is transferred to main control chip U8, the main control chip U8 is according to push button signalling control display screen
The mode selecting information of upper display and the operation of test job.
Description of the drawings
Fig. 1 is the structure connection block diagram of the present invention.
Fig. 2 is the power supply control power consumption detection circuit figure in the present invention.
Fig. 3 is the infrared receiving circuit figure in the present invention.
Fig. 4 is the voltage detecting road figure in the present invention.
Fig. 5 is the LED test circuit figures in the present invention.
Fig. 6 is the pinouts of the winding displacement U13 in the present invention.
Fig. 7 is the analog matrix key circuit figure in the present invention.
Fig. 8 is the 5V regulator circuit figures in the present invention.
Fig. 9 is the circuit board power supply circuit in the present invention.
Specific embodiment
The present invention is further illustrated below in conjunction with the accompanying drawings.
Such as a kind of Fig. 1~test system of remote control circuitry plate shown in Fig. 9, including tester, liftable testing needle
Disk and several test position fix fixtures fixed and for clamping circuit board, test dials are equipped with several and each electricity
The one-to-one testing needle of test point of road plate, test dials are arranged on the surface of test position fix fixture, and testing needle is by circuit
Plate corresponds to the test signal of test point and is transferred to tester by testing dials, tester include main control chip U8, power circuit,
Voltage detecting circuit, power supply control power consumption detection circuit, warning circuit, analog matrix key circuit and display screen, power circuit
It powers to power supply control power consumption detection circuit, warning circuit, display screen, main control chip U8 and circuit board, voltage detecting circuit inspection
The supply voltage of slowdown monitoring circuit plate is simultaneously transferred to main control chip U8, and main control chip U8 is according to the supply voltage control of the circuit board received
The action of power supply control power consumption detection circuit processed, power supply control power consumption detection circuit is according to the control signal of main control chip U8 to electricity
Road plate is discharged or current measurement, and current measurement value is transferred to main control chip U8；Analog matrix key circuit is used for simulating electricity
Push button signalling transmission is fed back to main control chip U8 by the button on the plate of road, circuit board, and main control chip U8 is according to the voltage received
The action of detected value, current measurement value and push button signalling control warning circuit, main control chip U8 are sent to display by information is tested
Shield, the test information of display circuit board on display screen.
In order to realize the electric signal transmission of circuit board and tester, several are detachably connected on test position fix fixture
Accumulator, accumulator are corresponded with circuit board, and accumulator is electrically connected with test dials, and test dials is by having 40 pins
Winding displacement U13 be electrically connected with tester, power circuit include 5V regulator circuits and circuit board power supply circuit, accumulator it is steady as 5V
The input power of volt circuit and circuit board power supply circuit represents input power using Vcd, and 5V regulator circuits give power supply control power consumption
Detection circuit, warning circuit, display screen and main control chip U8 power supplies, 5V regulator circuits output 5V voltages, 5V voltages Vcc tables
Show, the out-put supply Vdd of circuit board power supply circuit powers to circuit board.
For the power consumption condition of control circuit board, power supply control power consumption detection circuit includes optical coupling isolator U7, power Vcc
One end of resistance R33, the cathode of the other end connection optical coupling isolator U7 of resistance R33 are connected, the anode of optical coupling isolator U7 connects
Meet the P3.6 ports of main control chip U8, one end of the collector connection resistance R54 and resistance R59 of optical coupling isolator U7, resistance R59
The base stage of PNP type triode Q2 is connected, the other end of power supply Vdd connection resistance R54, the emitter of triode Q2 and circuit board are defeated
Enter the anode of power supply, the cathode of the collector connection circuit board input power of triode Q2, resistance R48 one end, N-channel field-effect
The drain electrode of pipe Q1 and resistance R51 one end, the in-phase input end of the other end connection amplifier chip U9 of resistance R51, field-effect tube Q1
Grid connection resistance R49 one end, the P3.7 ports of resistance R49 other ends connection main control chip U8,5V voltages are to amplifier chip
U9 powers, inverting input connection resistance R55 one end of amplifier chip U9, the delivery outlet connection resistance R55 mono- of amplifier chip U9
End, resistance R52 one end, capacitance C13 one end and main control chip U8 P1.0 ports, resistance R52 other ends connection variable resistance R5
One end, adjustable resistance R5 other ends connection resistance R55 one end, the resistance R48 other ends, the source electrode of field-effect tube Q1, resistance R50 are another
One end and the resistance R55 other ends are grounded.
Whether normal for the input supply voltage of detection circuit plate, voltage detecting circuit includes resistance R80, and circuit board is defeated
Enter power supply connection resistance R80 one end, the resistance R80 other ends connect one end of resistance R62 and resistance R81, and the resistance R62 other ends connect
Connect the P1.1 ports of main control chip U8, resistance R81 other ends ground connection；Main control chip U8 is according to the circuit board input power received
Voltage signal control triode Q2 and field-effect tube Q1 break-make.
For the key testing of automatic imitation circuit board, analog matrix key circuit include 28 select 1 analog switch core
Piece U2 and U3, the enable port of P0.3 ports connection analog switch chip U2 of main control chip U8 and making for analog switch chip U3
Energy port, common end of the common end of analog switch chip U2 through resistance R5 connection analog switch chips U3, analog switch chip
The independent input port x 0 of U2, X1 ... the 1st pin of X8 difference connection cables U13, the 2nd pin ... the 8th pins of, simulation
The independent input port x 0 of switch chip U3, X1 ... X8 connect respectively the 9th pin of U13, the 10th pin ... the 16th draws
Foot, P0.0 ports, P0.1 ports and the P0.2 ports of main control chip U8 connect 3 number selections of analog switch chip U2 respectively
End, P0.4 ports, P0.5 ports and the P0.6 ports of main control chip U8 connect 3 number selections of analog switch chip U3 respectively
End.
In order to which whether the button on test circuit plate is normal, tester further includes infrared receiving circuit, infrared receiving circuit
Including resistance R67, power Vcc connection resistance R67 one end and capacitance C35 one end, the 35th pin connection resistance R75 of winding displacement U13
One end, resistance R67 other ends connection resistance R68, resistance R70 and resistance R27 one end, the resistance R75 other ends and resistance R68 are another
The cathode of end connection resistance R69 one end, capacitance C36 one end and infrared receiving diode IR _ IN, resistance R69 and capacitance C36's
The base stage of other end connection PNP type triode Q6, the collector of the other end connecting triode Q6 of resistance R70, capacitance C37 one end
With the base stage of PNP type triode Q7, the collector of resistance R27 other end connecting triodes Q7 and resistance R53 one end, resistance R53
The single NOT gate chip U14 of other end connection input terminal, the input terminal of single NOT gate chip U15 and resistance R17 one end, single NOT gate core
Output terminal connection resistance R21 one end of piece U14, the anode of resistance R21 other end connecting luminous diodes D1, resistance R17's is another
The P3.2 ports of one end connection main control chip U8, the P3.3 ports of the output terminal connection main control chip U8 of single NOT gate chip U15；It is red
The anode of outer reception diode IR _ IN, the emitter of triode Q6, the other end of capacitance C37, triode Q7 emitter and
The cathode of light emitting diode D1 is grounded.
In order to which whether the LED light tested on remote control circuitry plate works normally, tester further includes 4 groups of LED test circuits,
One of which LED test circuits include the cathode of reception diode LED _ IN, 5V voltage connection reception diode LED _ IN, and two
Anode connection resistance R19 one end of pole pipe LED_IN and resistance R22 one end, resistance R22 other ends connection main control chip U8's
P1.2 ports, the resistance R22 other ends are LED test signal input port, and the other end of resistance R19 is grounded；Each group LED test circuits
Principle it is identical, as shown in Figure 4；The LED test signal input port I/ different from main control chip U8's of difference group LED test circuits
0 mouthful of connection, it is abnormal whether main control chip U8 shines according to the LED test signal decision circuitry onboard led lamp received.
In order to improve the alternative of test job, 4 mode selection buttons, pattern choosing are connected on the shell of tester
It selects button and push button signalling is transferred to main control chip U8, main control chip U8 is according to the pattern shown in push button signalling control display screen
Select the operation of information and test job.
Wherein, as shown in figure 4, accumulator is as 5V regulator circuits and the input power Vcc, 5V of circuit board power supply circuit
Regulator circuit includes capacitance C20, and power Vcc connects the anode of electrolytic capacitor C20, one end of capacitance C18 and voltage stabilizing chip U11
Input terminal, the anode of output port connection diode D1 of voltage stabilizing chip U11 and one end of inductance L1, the other end of inductance L1 connect
Connect one end of the Voltage Feedback port of voltage stabilizing chip, the anode of electrolytic capacitor C33 and capacitance C13, the other end output of inductance L1
5V voltages, the grounding ports of voltage stabilizing chip U11, the cathode of electrolytic capacitor C20, the other end of capacitance C18, diode D1 it is negative
The other end of pole, the cathode of electrolytic capacitor C33 and capacitance C13 is grounded；The model LM2576S of voltage stabilizing chip U11.
Circuit board power supply circuit includes voltage stabilizing chip U12, one end of power Vcc connection capacitance C34 and voltage stabilizing chip U12's
Input port, the voltage of voltage stabilizing chip adjust port connection adjustable resistance R3 one end, capacitance C21 one end, resistance R61 one end, can
Adjust resistance R7 one end and adjustable resistance R4 one end, the other end, the electrolysis electricity of the voltage output port connection resistance R61 of voltage stabilizing chip
Hold the anode of C32 and one end of capacitance C24, the collector of the other end connection NPN type triode Q5 of adjustable resistance R7, triode
Base stage connection resistance R71 one end of Q5, the P1.6 ports of resistance R71 other ends connection main control chip U8, adjustable resistance R4's is another
The collector of one end connection NPN type triode Q4, one end of the base stage connection resistance R66 of triode Q4, the other end of resistance R66
Connect the P3.5 ports of main control chip U8, the other end of capacitance C34, the other end of adjustable resistance R3, capacitance C21 the other end,
The other end of the emitter of triode Q5, the emitter of triode Q4 and capacitance C24 is grounded, and the voltage of voltage stabilizing chip U12 is defeated
It is 2.2V-3.6V that exit port, which exports the voltage value of power supply Vdd, Vdd powered to circuit board,；The model of voltage stabilizing chip U12
LM317。
Test job prepares, and to system electrification, the program initialization of main control chip shows model information, use pattern choosing
Select button confirm type after, on display screen display pattern select information, mode selecting information include test pattern, debugging mode,
Point inspection pattern etc. is confirmed using 4 mode selection buttons and enters test pattern, and test job starts；Voltage detecting circuit passes through
The voltage of testing needle looping test circuit board, it is specific to be divided for voltage of the output to remote controler to be measured by R80 and R81
Acquirement output voltage values are AD converted into main control chip, the determining program in main control chip judges voltage whether just afterwards
Normal range, if circuit board obtains normal power supply, the low and high level point of main control chip control P3.6 ports and the output of P3.7 ports
Not so that Q1 conductings, Q2 cut-offs, if circuit abnormality causes output voltage higher or is relatively low, main control chip controls P3.6 ports
Cause Q1 cut-offs, Q2 conductings respectively with the low and high level of P3.7 ports output, circuit board immediately enters discharge condition, stop to
Circuit board is powered, main control chip control warning circuit sound-light alarm；During current measurement, main control chip control P3.6 ports and P3.7
The low and high level of port output causes Q1 cut-offs, Q2 cut-offs respectively, and the electric current of remote control circuitry plate generates pressure on resistance R48
Drop, is amplified into main control chip by amplifier U9 and is AD converted, obtain current value, main control chip is according to the electric current received
Whether the current value for being worth decision circuitry plate is abnormal, if current anomaly, main control chip control warning circuit sends out sound-light alarm；Master control
Chip passes through the enabled of P0.3 port controlling analog switch chips U2 and U3, analog switch chip U2 and analog switch chip U3 quilts
When enabled, analog switch chip work, main control chip is by controlling P0.0, P0.1, P0.2, P0.4, P0.5 and P0.6 port
Output realize analogue-key, such as P0.0, P0.1, P0.2 port output valve be 0 and P0.4, P0.5 and P0.6 port it is defeated
When going out value and being 0, to the corresponding button of the first row first row in analog circuit board, the corresponding button of the first row first row by by
Under, by button feedback signal by sending infrared code to infrared receiving circuit, infrared receiving diode IR_IN is received circuit board
Shape correction is carried out by NOT gate again after being amplified after infrared code signal by discrete component, the signal after Shape correction is more
Add complete signal, reduce the loss of signal, make signal more continuous, the signal after Shape correction passes through P3.2 and P3.3 ports
Main control chip is sent to, main control chip judges whether button is normal according to the infrared signal received, if button is abnormal, master control
Chip controls warning circuit sends out sound-light alarm；Other button principle of simulations are identical with more than, and details are not described herein；Circuit board
On in defined operation, such as button is pressed, and corresponding LED light is bright, and luminance signal is transferred to LED test electricity by LED light
Road, the reception diode in LED test circuits receive LED light luminance signal and are transmitted to main control chip, main control chip root
Judge whether LED light is working normally according to the luminance signal received, if LED light abnormal work, main control chip control alarm
Circuit sends out sound-light alarm；In above all of test, when it is all test by when, warning circuit does not work and shows always
Screen display " pass " is as long as there is a test not pass through, then warning circuit sound-light alarm, and show screen display " fail " and
Corresponding test does not pass through information；Compared with prior art, the present invention the present invention can test different types of machines and can test simultaneously more
A circuit board improves testing efficiency；Electric discharge, the voltage conversion of circuit board are controllable, realize the control of the arbitrary button of 8*8 matrixes,
By the setting of each circuit, dropout is fewer, and signal is more continuous, improves the accuracy rate of test；The present invention can apply
In the work of test remote control circuitry plate.
The invention is not limited in above-described embodiments, on the basis of technical solution disclosed by the invention, the skill of this field
For art personnel according to disclosed technology contents, one can be made to some of which technical characteristic by not needing to performing creative labour
A little to replace and deform, these are replaced and deformation all falls in the scope of protection of the present invention.
Claims (8)
1. a kind of test system of remote control circuitry plate, it is characterised in that：Including tester, liftable test dials and several
Test position fix fixture a fixed and for clamping circuit board, the test dials are equipped with several and each circuit board
The one-to-one testing needle of test point, test dials is arranged on the surface of test position fix fixture, and the testing needle is by circuit
The test signal that plate corresponds to test point is transferred to tester by testing dials, and the tester includes main control chip U8, power supply
Circuit, voltage detecting circuit, power supply control power consumption detection circuit, warning circuit, analog matrix key circuit and display screen, it is described
Power circuit is powered to power supply control power consumption detection circuit, warning circuit, display screen, main control chip U8 and circuit board, the electricity
It presses the supply voltage of detection circuit detection circuit plate and is transferred to main control chip U8, the main control chip U8 is according to the electricity received
The action of the supply voltage control power supply control power consumption detection circuit of road plate, power supply control power consumption detection circuit is according to main control chip
The control signal of U8 is discharged circuit board or current measurement, current measurement value are transferred to main control chip U8；The simulation square
Battle array key circuit is used for the button in analog circuit board, and push button signalling transmission is fed back to main control chip U8, the master by circuit board
Control chip U8 is according to the action of voltage detecting value, current measurement value and push button signalling control warning circuit received, master control core
Piece U8 will test information and be sent to display screen, the test information of display circuit board on display screen.
A kind of 2. test system of remote control circuitry plate according to claim 1, which is characterized in that the test position fix folder
Several accumulators are detachably connected on tool, the accumulator is corresponded with circuit board, accumulator and test dials electricity
Connection, the test dials are electrically connected by the winding displacement U13 with 40 pins with tester, and it is steady that the power circuit includes 5V
Volt circuit and circuit board power supply circuit, accumulator is as 5V regulator circuits and the input power of circuit board power supply circuit, the 5V
Regulator circuit is powered to power supply control power consumption detection circuit, warning circuit, display screen and main control chip U8, the output of 5V regulator circuits
5V voltages, 5V voltages represent that the out-put supply Vdd of the circuit board power supply circuit powers to circuit board with Vcc.
A kind of 3. test system of remote control circuitry plate according to claim 1, which is characterized in that the power supply control consumption
Power detection circuit includes optical coupling isolator U7, one end of power Vcc connection resistance R33, the other end connection optocoupler of resistance R33 every
Cathode from device U7, the P3.6 ports of the anode connection main control chip U8 of the optical coupling isolator U7, the collection of optical coupling isolator U7
Electrode connects one end of resistance R54 and resistance R59, the base stage of resistance R59 connection PNP type triodes Q2, power supply Vdd connection resistance
The anode of the other end of R54, the emitter of triode Q2 and circuit board input power, the collector connection electricity of the triode Q2
Cathode, resistance R48 one end, the drain electrode of N-channel field-effect tube Q1 and resistance R51 one end of road plate input power, the resistance R51
Other end connection amplifier chip U9 in-phase input end, grid connection resistance R49 one end of field-effect tube Q1, resistance R49 is another
The P3.7 ports of one end connection main control chip U8,5V voltages are powered to amplifier chip U9, and the inverting input of amplifier chip U9 connects
Connecting resistance R55 one end, delivery outlet connection resistance R55 one end, resistance R52 one end, capacitance C13 one end and the master control of amplifier chip U9
The P1.0 ports of chip U8, described resistance R52 other ends connection variable resistance R5 one end, adjustable resistance R5 other ends connection resistance
R55 one end, the resistance R48 other ends, the source electrode of field-effect tube Q1, the resistance R50 other ends and the resistance R55 other ends connect
Ground.
A kind of 4. test system of remote control circuitry plate according to claim 3, which is characterized in that the voltage detecting electricity
Road includes resistance R80, circuit board input power connection resistance R80 one end, resistance R80 other ends connection resistance R62 and resistance R81
One end, the P1.1 ports of resistance R62 other ends connection main control chip U8, resistance R81 other ends ground connection；The main control chip U8
The break-make of triode Q2 and field-effect tube Q1 is controlled according to the voltage signal of the circuit board input power received.
5. the test system of a kind of remote control circuitry plate according to claim 1, which is characterized in that the analog matrix is pressed
Key circuit include 28 select 1 analog switch chip U2 and U3, the P0.3 ports connection analog switch core of the main control chip U8
The enable port of piece U2 and the enable port of analog switch chip U3, the common end of the analog switch chip U2 connect through resistance R5
Connect the common end of analog switch chip U3, the independent input port x 0 of analog switch chip U2, X1 ... X8 distinguishes connection cable
The 1st pin of U13, the 2nd pin ... the 8th pins of, the independent input port x 0 of the analog switch chip U3, X1 ... X8
Respectively connection the 9th pin of U13, the 10th pin ... the 16th pins of, P0.0 ports, P0.1 ports and the P0.2 of main control chip U8
Port connects 3 number selection ends of analog switch chip U2, P0.4 ports, P0.5 ports and the P0.6 of main control chip U8 respectively
Port connects 3 number selection ends of analog switch chip U3 respectively.
6. the test system of a kind of remote control circuitry plate according to claim 2, which is characterized in that the tester also wraps
Infrared receiving circuit is included, the infrared receiving circuit includes power Vcc, described power Vcc connection resistance R67 one end and capacitance
C35 one end, the 35th pin connection resistance R75 one end of winding displacement U13, resistance R67 other ends connection resistance R68, resistance R70 and electricity
R27 one end is hindered, the resistance R75 other ends connect resistance R69 one end, capacitance C36 one end and infrared receiver two with the resistance R68 other ends
The cathode of pole pipe IR _ IN, the resistance R69 connect the base stage of PNP type triode Q6, resistance R70 with the other end of capacitance C36
The collector of other end connecting triode Q6, capacitance C37 one end and PNP type triode Q7 base stage, the resistance R27 is another
The collector of connecting triode Q7 and resistance R53 one end are held, the single NOT gate chip U14's of other end connection of the resistance R53 is defeated
Enter end, the input terminal of single NOT gate chip U15 and resistance R17 one end, the output terminal of single NOT gate chip U14 and connect resistance R21 one end,
The anode of resistance R21 other end connecting luminous diodes D1, the P3.2 ends of the other end connection main control chip U8 of the resistance R17
Mouthful, the P3.3 ports of the output terminal connection main control chip U8 of the list NOT gate chip U15；Infrared receiving diode IR _ the IN
Anode, the emitter of triode Q6, the other end of capacitance C37, the emitter of triode Q7 and light emitting diode D1 cathode
It is grounded.
7. the test system of a kind of remote control circuitry plate according to claim 1, which is characterized in that the tester also wraps
Several groups of LED test circuits are included, the LED test circuits include reception diode LED _ IN, 5V voltage and connect reception diode
The cathode of LED _ IN, anode connection resistance R19 one end of diode (LED) _ IN and resistance R22 one end, the resistance R22 are another
The P1.2 ports of end connection main control chip U8, the resistance R22 other ends are LED test signal input port, another termination of resistance R19
Ground；The LED test signal input port I/0 mouthfuls of connections different from main control chip U8's of difference group LED test circuits, the master control core
It is abnormal whether piece U8 shines according to the LED test signal decision circuitry onboard led lamp received.
8. the test system of a kind of remote control circuitry plate according to claim 1, which is characterized in that outside the tester
4 mode selection buttons are connected on shell, push button signalling is transferred to main control chip U8, the master control by the mode selection button
Chip U8 is according to the mode selecting information shown in push button signalling control display screen and the operation of test job.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721221646.8U CN207473046U (en) | 2017-09-22 | 2017-09-22 | A kind of test system of remote control circuitry plate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721221646.8U CN207473046U (en) | 2017-09-22 | 2017-09-22 | A kind of test system of remote control circuitry plate |
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| CN207473046U true CN207473046U (en) | 2018-06-08 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107526028A (en) * | 2017-09-22 | 2017-12-29 | 骏升科技（扬州）有限公司 | A kind of test system and method for testing of remote control circuitry plate |
| CN108776297A (en) * | 2018-07-26 | 2018-11-09 | 四川长虹网络科技有限责任公司 | Circuit board detection device and method |
| CN111474463A (en) * | 2020-04-27 | 2020-07-31 | Oppo（重庆）智能科技有限公司 | Circuit board test system, circuit board test host and circuit board test method |
-
2017
- 2017-09-22 CN CN201721221646.8U patent/CN207473046U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107526028A (en) * | 2017-09-22 | 2017-12-29 | 骏升科技（扬州）有限公司 | A kind of test system and method for testing of remote control circuitry plate |
| CN108776297A (en) * | 2018-07-26 | 2018-11-09 | 四川长虹网络科技有限责任公司 | Circuit board detection device and method |
| CN111474463A (en) * | 2020-04-27 | 2020-07-31 | Oppo（重庆）智能科技有限公司 | Circuit board test system, circuit board test host and circuit board test method |
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