CN108490343A - The driver circuit board test aging equipment of PCR instrument - Google Patents

The driver circuit board test aging equipment of PCR instrument Download PDF

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Publication number
CN108490343A
CN108490343A CN201810494429.9A CN201810494429A CN108490343A CN 108490343 A CN108490343 A CN 108490343A CN 201810494429 A CN201810494429 A CN 201810494429A CN 108490343 A CN108490343 A CN 108490343A
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China
Prior art keywords
pins
circuit
connect
singlechip
capacitance
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CN201810494429.9A
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CN108490343B (en
Inventor
胡炎昌
伊波
贾伟
童国军
石建军
贺贤汉
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HANGZHOU BIOER TECHNOLOGY Co Ltd
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HANGZHOU BIOER TECHNOLOGY Co Ltd
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/28—Testing of electronic circuits, e.g. by signal tracer
    • G01R31/2851—Testing of integrated circuits [IC]

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  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Tests Of Electronic Circuits (AREA)

Abstract

The invention discloses the driver circuit board test aging equipments of PCR instrument.Human factor influences big in the test process of the driver circuit board test device of PCR instrument.The present invention includes motherboard power supply, control mainboard and fictitious load group；The fictitious load group includes the first fictitious load, the second fictitious load, third fictitious load, the 4th fictitious load, the 5th fictitious load and the 6th fictitious load；The control mainboard includes power-switching circuit, main control singlechip circuit, current sampling circuit, output interface circuit, accessory channel output signal indicating circuit, storage unit display circuit, display button interface circuit, memory cell data processing circuit, data storage circuit, feedback signal conversion circuit and memory cell signal interface circuit；The present invention makes tested PCR driver circuits plate complete test and aging in a stringent working environment by powering up, loading.

Description

The driver circuit board test aging equipment of PCR instrument
Technical field
The invention belongs to drive board test aging technical field, and in particular to a kind of driver circuit board test of PCR instrument The device of aging.
Background technology
The common aging techniques of PCR domain-drivens wiring board are at present：Debugging carries out the offline high/low temperature of veneer after testing Then impact aging carries out testing reinspection and picking out not conforming to panel again.Such process does not carry out fatigue to component in plate Phase tests, and can not pick out the unstable veneer in operational process, operation process is also too loaded down with trivial details.Debug the people of test process It is excessive for factor.
Invention content
The purpose of the present invention is to provide a kind of devices of the driver circuit board test aging of PCR instrument.
The present invention includes motherboard power supply, control mainboard and fictitious load group；The fictitious load group includes the first simulation Load, the second fictitious load, third fictitious load, the 4th fictitious load, the 5th fictitious load and the 6th fictitious load；Described Control mainboard includes that power-switching circuit, main control singlechip circuit, current sampling circuit, output interface circuit, accessory channel are defeated Go out signal indicating circuit, storage unit display circuit, display button interface circuit, memory cell data processing circuit, data to deposit Memory circuit, feedback signal conversion circuit and memory cell signal interface circuit；Power-switching circuit by power voltage step down module, First voltage stabilizing chip and the second voltage stabilizing chip are master control single chip circuit, current sampling circuit, storage unit display circuit, storage Cell data processing circuit, data storage circuit and the power supply of feedback signal conversion circuit；Main control singlechip circuit passes through first Microcontroller sends drive signal to drive signal interface circuit；Current sampling circuit passes through the first digital voltage gauge outfit, the second number Word voltmeter head show respectively the first fictitious load, the second fictitious load both ends voltage value；Feedback signal conversion circuit passes through Photoelectrical coupler converts after switching value the voltage value received to and is transferred to memory cell data processing circuit；Number of memory cells It is connected with storage unit display circuit according to processing circuit.
Drive signal interface circuit is drive signal connecting terminal block；1 pin of drive signal connecting terminal block connects master control 4th data output end of single chip circuit, 3 pins connect the third data output end of main control singlechip circuit, and 5 pins connect master control First data output end of single chip circuit；9 pins connect the second data output end of main control singlechip circuit, and 13 pins connect master control 9th control output end of single chip circuit, 15 pins connect the 8th control output end of main control singlechip circuit, and 25 pins meet master Control the second control output end of single chip circuit, 26 pins connect the first control output end of main control singlechip circuit, 2,4,6,8, 10,12,14,16,18,20,22,24 and 29 pins connect the 3.3V output ends of power-switching circuit, and 17 pins connect master control list The third control output end on piece electromechanics road, 19 pins connect the 4th control output end of main control singlechip circuit, and 7 pins connect master control 7th control output end of single chip circuit, 27 pins connect the 6th control output end of main control singlechip circuit, and 28 pins connect 5th control output end of main control singlechip circuit, 35 pins ground connection.
Output interface circuit includes the first transmission connecting terminal block and output wiring terminal row.First transmission connecting terminal block The first terminals of 2,4 pins and the first fictitious load, the second fictitious load be respectively connected with, 9 pins connect main control singlechip electricity The signal interaction end on road, 10 pins connect the anode of motherboard power supply, the first wiring of 17,18,19,20 pins and third fictitious load It holds, the first terminals of the first terminals of the 4th fictitious load, the first terminals of the 5th fictitious load, the 6th fictitious load It is respectively connected with；The second wiring termination master of third fictitious load, the 4th fictitious load, the 5th fictitious load and the 6th fictitious load The anode of plate power supply.
1,2,9 and 10 pins of output wiring terminal row connect the second terminals of the first fictitious load, and 3,4,11 and 12 Pin connects the first terminals of the first fictitious load, and 5,6,13 and 14 pins connect the second terminals of the second fictitious load, 7,8,15 and 16 pins connect the first terminals of the second fictitious load.
Display button interface circuit includes the first communications line terminal block.First communications line terminal block 8,10,12, 14, one end of 16 pins and the first button, the second button, third button, the 4th button, the 5th button is respectively connected with；First presses Key, the second button, third button, the 4th button and the 5th button the other end be grounded；The 11 of first communications line terminal block And 13 pin connect the 5V output ends of power-switching circuit, 7 and 9 pins are grounded, 1,3,5 pins and storage unit display circuit The first signal input part, second signal input terminal, third signal input part be respectively connected with.
Memory cell signal interface circuit includes the second communications line terminal block and the second transmission connecting terminal block.Second is logical 7 and 9 pins of news connecting terminal block are grounded, and 11 and 13 pins connect the 5V output ends of power-switching circuit, 1,3,5 pins with The third of memory cell data processing circuit shows that output end, the second display output end, the first display output end are respectively connected with；The 9th signal of 2,4,6,8,10,12,14,16 pins and memory cell data processing circuit of two communication connecting terminal blocks inputs End to the 16th signal input part is respectively connected with.
9 pins of the second transmission connecting terminal block connect the signal interaction end of memory cell data processing circuit.Second transmission 1,3 pins of connecting terminal block and two third analog input ends of feedback signal conversion circuit are respectively connected with；Second transmission 2,4 pins of connecting terminal block are respectively connected with two the 4th analog input ends of feedback signal conversion circuit；Second transmission First analog input end of the reversed feedback signal conversion circuit of 10 pins of connecting terminal block；Second transmission connecting terminal block 17, four the second analog input ends of 18,19,20 pins and feedback signal conversion circuit are respectively connected with.
Drive signal interface circuit is drive signal connecting terminal block.1 pin of drive signal connecting terminal block connects master control 4th data output end of single chip circuit, 3 pins connect the third data output end of main control singlechip circuit, and 5 pins connect master control First data output end of single chip circuit；9 pins connect the second data output end of main control singlechip circuit, and 13 pins connect master control 9th control output end of single chip circuit, 15 pins connect the 8th control output end of main control singlechip circuit, and 25 pins meet master Control the second control output end of single chip circuit, 26 pins connect the first control output end of main control singlechip circuit, 2,4,6,8, 10,12,14,16,18,20,22,24 and 29 pins connect the 3.3V output ends of power-switching circuit, and 17 pins connect master control list The third control output end on piece electromechanics road, 19 pins connect the 4th control output end of main control singlechip circuit, and 7 pins connect master control 7th control output end of single chip circuit, 27 pins connect the 6th control output end of main control singlechip circuit, and 28 pins connect 5th control output end of main control singlechip circuit, 35 pins ground connection.
20 pins of 20 pins of the first transmission connecting terminal block and the second transmission connecting terminal block are with one 20 core wire beams are respectively connected with；20 pins of the first communications line terminal block draw with 20 of the second communications line terminal block Foot is respectively connected with a 20 core wire beams.
Further, the power-switching circuit includes the first voltage stabilizing chip, the second voltage stabilizing chip and power voltage step down mould Block；The model SUCS102412C of the power voltage step down module；The model SP1117M3- of first voltage stabilizing chip 3.3；The model NCP1117DT50G of second voltage stabilizing chip；1 pin of power voltage step down module connect motherboard power supply anode, One end of the cathode of 5th diode D5, the anode of the first capacitance C1 and the second capacitance C2,2,3 pins connect the negative of motherboard power supply Pole, the anode of the 5th diode D5, the cathode of the first capacitance C1 and the second capacitance C2 other ends, 4 pins connect the 7th capacitance C7's Anode, one end of third capacitance C3,1 pin of the first voltage stabilizing chip and the second voltage stabilizing chip 1 pin, 5 pins are hanging, and 6 draw Foot is connected and is grounded with the other end of the cathode of the 7th capacitance C7 and third capacitance C3；3 pins of the first voltage stabilizing chip connect the 4th The anode of one end of capacitance C4 and the 8th capacitance C8；2 pins of the first voltage stabilizing chip, the other end of the 4th capacitance C4 and the 8th electricity The cathode for holding C8 is grounded；3 pins of the second voltage stabilizing chip connect one end of the 6th capacitance C6 and the anode of the 9th capacitance C9；Second 2 pins, the other end of the 6th capacitance C6 and the cathode of the 9th capacitance C9 of voltage stabilizing chip are grounded；Draw the 3 of first voltage stabilizing chip Foot is the 3.3V output ends of power-switching circuit；3 pins of the second voltage stabilizing chip are the 5V output ends of power-switching circuit.
Further, main control singlechip circuit includes first singlechip；The model P89V51 of first singlechip；First is single 29 pins of piece machine connect the 5V output ends of power-switching circuit, 16 pins ground connection, and 38 pins connect the 5V outputs of power-switching circuit End, one end of the 5th capacitance C5, the first exclusion and the second exclusion common pin；The other end of 5th capacitance C5 is grounded；First Four normal pins of exclusion and 34,35,36,37 pins of first singlechip are respectively connected with；Four of second exclusion commonly draw Foot and 30,31,32,33 pins of first singlechip are respectively connected with；32,33 pins and the 6th button and the 7th of first singlechip One end of button is respectively connected with；The other end of 6th button and the 7th button is grounded；4 pins of first singlechip connect the first electricity Hinder one end of R1 and the cathode of the tenth capacitance C10；The other end of first resistor R1 is grounded；The anode of tenth capacitance C10 connects power supply The 5V output ends of conversion circuit；14 pins of first singlechip connect one end of the first crystal oscillator Z1 and the 11st capacitance C11,15 pins Connect the other end of the first crystal oscillator Z1 and one end of the 12nd capacitance C12；11st capacitance C11 and the 12nd capacitance C12 other ends It is grounded；12 pins of first singlechip connect the cathode of the first buzzer；The anode of first buzzer connects power-switching circuit 5V output ends；18 pins of first singlechip connect one end of the 7th resistance R7, the 9th luminous tube of another termination of the 7th resistance R7 The anode of D9, the cathode ground connection of the 9th luminous tube D9；19 pins of first singlechip connect one end of the 8th resistance R8, the 8th resistance The anode of the 8th luminous tube D8 of another termination of R8, the cathode ground connection of the 8th luminous tube D8；20 pins of first singlechip connect One end of nine resistance R9, the anode of the 7th luminous tube D7 of another termination of the 9th resistance R9, the cathode ground connection of the 7th luminous tube D7； 21 pins of first singlechip connect one end of the tenth resistance R10, and the 6th luminous tube D6 of another termination of the tenth resistance R10 is just Pole, the cathode ground connection of the 6th luminous tube D6；1,3,8,9,10,11,30,36,37 pins of first singlechip are respectively master control list First control output end on piece electromechanics road to the 9th control output end；Based on 41,42,43, the 44 pins difference of first singlechip Control the first data output end to the 4th data output end of single chip circuit；31 pins of first singlechip are main control singlechip electricity The signal interaction end on road；Remaining pin of first singlechip is hanging.
Further, current sampling circuit includes the first power conversion chip, second source conversion chip, the first number electricity Press gauge outfit and the second digital voltage gauge outfit；First power conversion chip, second source conversion chip model be NMK0505SAC；First digital voltage gauge outfit, the model of the second digital voltage gauge outfit are FY5140B；First power supply converts core Piece, second source conversion chip 1 pin connect the 5V output ends of power-switching circuit, 2 pins are grounded.
3 pins of the first power conversion chip connect the first terminals of the first fictitious load, the 37th resistance R37, One end of 20 capacitance C20,2 pins of the first digital voltage gauge outfit, one end of resistive element and movable contact in the first potentiometer；The 4 pins of one power conversion chip connect the other end of the 37th resistance R37 and 3 pins of the first digital voltage gauge outfit；First One end of the 29th resistance R29 of another termination of resistive element in potentiometer；29th resistance R29 and the 20th capacitance C20 The other end connect one end of the 33rd resistance R33 and 1 pin of the first digital voltage gauge outfit；33rd resistance R33's Second terminals of the first fictitious load of another termination.
3 pins of second source conversion chip connect the first terminals of the second fictitious load, the 38th resistance R38, One end of 21 capacitance C21,2 pins of the second digital voltage gauge outfit, one end of resistive element and movable contact in the second potentiometer； 4 pins of second source conversion chip connect the other end of the 38th resistance R38 and 3 pins of the second digital voltage gauge outfit；The One end of the 30th resistance R30 of another termination of the interior resistive element of two potentiometers；30th resistance R30 and the 21st capacitance The other end of C21 connects one end of the 34th resistance R34 and 1 pin of the second digital voltage gauge outfit；34th resistance R34 The second fictitious load of another termination the second terminals.
Further, accessory channel output signal indicating circuit include the 16th luminous tube D16, the 17th luminous tube D17, 18th luminous tube D18 and the 19th luminous tube D19.16th luminous tube D16, the 17th luminous tube D17, the 18th luminous tube Anode and eleventh resistor R11, twelfth resistor R12, thirteenth resistor R13, the 14th electricity of D18, the 19th luminous tube D19 One end of resistance R14 is respectively connected with；Eleventh resistor R11, twelfth resistor R12, thirteenth resistor R13 and the 14th resistance R14 The other end connect the anode of motherboard power supply, the 16th luminous tube D16, the 17th luminous tube D17, the 18th luminous tube D18, The cathode of 19 luminous tube D19 and the first terminals of third fictitious load, the first terminals of the 4th fictitious load, the 5th mould First terminals of quasi- load, the first terminals of the 6th fictitious load are respectively connected with.
Further, memory cell data processing circuit includes second singlechip.The model P89V51 of second singlechip. 29 pins of second singlechip connect the 5V output ends of power-switching circuit, 16 pins ground connection, and 38 pins connect power-switching circuit 5V output ends, one end of the 25th capacitance C25, third exclusion and the 4th exclusion common pin；25th capacitance C25's The other end is grounded；Four normal pins of third exclusion and 34,35,36,37 pins of second singlechip are respectively connected with；4th row Four normal pins of resistance and 30,31,32,33 pins of second singlechip are respectively connected with；4 pins of second singlechip connect the tenth One end of five resistance R15 and the cathode of the 26th capacitance C26；The other end of 15th resistance R15 is grounded；26th capacitance The anode of C26 connects the 5V output ends of power-switching circuit；14 pins of second singlechip connect the second crystal oscillator and the 27th capacitance One end of C27,15 pins connect the other end of the second crystal oscillator and one end of the 28th capacitance C28；27th capacitance C27 and The 28 capacitance C28 other ends are grounded；32 pins of second singlechip connect the cathode of the second buzzer；Second buzzer is just Pole connects the 5V output ends of power-switching circuit；Second singlechip 40,41,42,43,44,1,2,3,18,19,20,21,22, 23,24,25 pins are respectively the first signal input part to the 16th signal input part of memory cell data processing circuit；Second 30,31 pins of microcontroller are respectively the IIC clock ends of memory cell data processing circuit, IIC bi-directional datas end；Second monolithic 35,36,37 pins of machine are respectively the first display output end of memory cell data processing circuit, the second display output end, the Three display output ends；33 pins of second singlechip are the signal interaction end of memory cell data processing circuit.
Further, storage unit display circuit includes digital pipe driving chip sum number code pipe；Digital pipe driving chip Model TM1623；The model S02848A-B of charactron；9 and 25 pins of digital pipe driving chip connect the 24th electricity Hold one end of C24 and the 5V output ends of power-switching circuit；26,29,32 pins of digital pipe driving chip and the 24th electricity The other end for holding C24 is grounded；Digital pipe driving chip 10,11,12,14,15,16,17,18,19,20,23,24,27, 28,14,16,13,3,5,11,15,7,12,9,10,4,8,6,2,1 pin of 30,31 pins and charactron M1 is respectively connected with；Number 3,4,5 pins of code pipe driving chip be respectively the first signal input part of storage unit display circuit, second signal input terminal, Third signal input part.
Further, data storage circuit includes storage chip；The model 24C01 of storage chip；Storage chip 1,2,3,4 and 7 pins are grounded, and 8 pins connect one end of the 29th capacitance C29 and the 5V output ends of power-switching circuit；The The other end of 29 capacitance C29 is grounded；5,6 pins of storage chip and the two-way numbers of IIC of memory cell data processing circuit It is respectively connected with according to end, IIC clock ends.
Further, feedback signal conversion circuit includes four the first signal feedback units and two second signal feedbacks Member；First signal feedback unit includes the first optocoupler；The first input end of first optocoupler connects one end of the 45th resistance R45, First output end is grounded, and second output terminal connects one end of the 46th resistance R46；Another termination electricity of 46th resistance R46 The 5V output ends of power-switching circuit.
Second signal feedback unit includes the second optocoupler and third optocoupler.The first input end and third optocoupler of second optocoupler The second input terminal connect one end of the 16th resistance R16；First input of the second input terminal of the second optocoupler and third optocoupler End is connected；First output end of the second optocoupler and third optocoupler is grounded；The second output terminal of second optocoupler connects the 17th resistance One end of R17；The 5V output ends of another termination power-switching circuit of 17th resistance R17；The second output terminal of third optocoupler Connect one end of the 18th resistance R18；The 5V output ends of another termination power-switching circuit of 18th resistance R18.
That end far from the first optocoupler of the 45th resistance R45 links together in four the first signal feedback units, The first analog input end as feedback signal conversion circuit；The second of the first optocoupler is defeated in four the first signal feedback units Enter four the second analog input ends that end is respectively feedback signal conversion circuit；First light in four the first signal feedback units The second output terminal of coupling and the first signal input part to the fourth signal input terminal of memory cell data processing circuit are respectively connected with.
That end far from the second optocoupler of the 16th resistance R16 is respectively feedback signal in two second signal feedback units Two third analog input ends of conversion circuit；The second input terminal difference of second optocoupler in two second signal feedback units For two the 4th analog input ends of feedback signal conversion circuit；The second of second optocoupler in two second signal feedback units Output end, the second output terminal of third optocoupler and the 5th signal input part of memory cell data processing circuit are defeated to the 8th signal Enter end to be respectively connected with.
The invention has the advantages that：
The present invention makes tested PCR driver circuits plate be completed in a stringent working environment by powering up and loading Test and aging, enable not conform to panel and expose defect in advance, and the fatigue phase is spent in the component acceleration of instinct in its plate. Defective work is screened before engineering installation, improves stability of instrument and production efficiency.
Description of the drawings
Fig. 1 is the system block diagram of the present invention；
Fig. 2 is the circuit diagram of power-switching circuit in the present invention；
Fig. 3 is the circuit diagram of main control singlechip circuit in the present invention；
Fig. 4 is the circuit diagram of drive signal interface circuit in the present invention；
Fig. 5 is the circuit diagram of current sampling circuit in the present invention；
Fig. 6 is the wiring diagram of the first transmission connecting terminal block in the present invention；
Fig. 7 is the wiring diagram that output wiring terminal is arranged in the present invention；
Fig. 8 is the circuit diagram of accessory channel output signal indicating circuit in the present invention；
Fig. 9 is the circuit diagram of storage unit display circuit in the present invention；
Figure 10 is the circuit diagram of display button interface circuit in the present invention；
Figure 11 is the circuit diagram of memory cell data processing circuit in the present invention；
Figure 12 is the circuit diagram of data storage circuit in the present invention；
Figure 13 is the circuit diagram of the first signal feedback unit in the present invention；
Figure 14 is the circuit diagram of second signal feedback unit in the present invention；
Figure 15 is the wiring diagram of the second communications line terminal block in the present invention；
Figure 16 is the wiring diagram of the second transmission connecting terminal block in the present invention；
Figure 17 is the inductance match curve figure of the present invention.
Specific implementation mode
Below in conjunction with attached drawing, the invention will be further described.
As shown in Figure 1, the driver circuit board test aging equipment of PCR instrument, including motherboard power supply 3, control mainboard and mould Quasi- load group 4.Fictitious load group 4 include the first fictitious load, the second fictitious load, third fictitious load, the 4th fictitious load, 5th fictitious load, the 6th fictitious load.First fictitious load, the second fictitious load, third fictitious load, the 4th simulation are negative Load, the 5th fictitious load, the 6th fictitious load are all made of gold aluminum casing resistor.
Control mainboard includes power-switching circuit 101, main control singlechip circuit 102, drive signal interface circuit 103, electricity Flow sample circuit 104, output interface circuit 105, accessory channel output signal indicating circuit 106, storage unit display circuit 201, display button interface circuit 202, memory cell data processing circuit 203, data storage circuit 204, feedback signal turn Change circuit 205 and memory cell signal interface circuit 206.Power-switching circuit 101 is by power voltage step down module by motherboard power supply 3 The 24V voltages of output are converted into 12V, and convert the 12V voltages that power module exports to 3.3V by the first voltage stabilizing chip and be Drive signal interface circuit 103 is powered, and the 12V voltages that power voltage step down module exports are converted to 5V by the second voltage stabilizing chip U2 For master control single chip circuit 102, current sampling circuit 104, storage unit display circuit 201, memory cell data processing circuit 203, data storage circuit 204 and feedback signal conversion circuit 205 are powered.Main control singlechip circuit 102 passes through the first monolithic Machine sends drive signal to drive signal interface circuit 103.Drive signal interface circuit 103 and fictitious load group 4 with it is tested Plate 5 is connected.Current sampling circuit 104 shows the first simulation respectively by the first digital voltage gauge outfit, the second digital voltage gauge outfit It loads, the voltage value of the second fictitious load.The model of Board Under Test is transferred to storage by display button interface circuit 202 by button Cell data processing circuit 203.Output interface circuit 105 and memory cell signal interface circuit 206 are by the first fictitious load, Two fictitious loads, third fictitious load, the 4th fictitious load, the 5th fictitious load, the 6th fictitious load voltage value be transferred to Feedback signal conversion circuit 205.Feedback signal conversion circuit 205 is converted out the voltage value received to by photoelectrical coupler It is transferred to memory cell data processing circuit 203 after the amount of pass.Memory cell data processing circuit 203 will be sentenced by second singlechip Whether the switching value that disconnected 205 transmission of feedback signal conversion circuit comes is correct, and generates detection code or error code.Storage unit Display circuit 201 by numeral method memory cell data processing circuit 203 transmit come detection code or error code.It deposits Memory circuit 204 stores detection code or error code by storage chip.
As shown in Fig. 2, power-switching circuit 101 includes the first voltage stabilizing chip U1, the second voltage stabilizing chip U2 and power voltage step down Module U7.The model SUCS102412C of power voltage step down module U7.The model SU7117M3-3.3 of first voltage stabilizing chip U1. The model NCU7117DT50G of second voltage stabilizing chip U2.1 pin of power voltage step down module U7 connects 3 anode HV+ of motherboard power supply, One end of the cathode of five diode D5, the anode of the first capacitance C1 and the second capacitance C2,2,3 pins connect the negative of motherboard power supply 3 Pole HV-, the anode of the 5th diode D5, the cathode of the first capacitance C1 and the second capacitance C2 other ends, 4 pins meet the 7th capacitance C7 Anode, one end of third capacitance C3,1 pin of the first voltage stabilizing chip U1 and the second voltage stabilizing chip U2 1 pin, 5 pins are outstanding Sky, 6 pins are connected and are grounded with the other end of the cathode of the 7th capacitance C7 and third capacitance C3.Draw the 3 of first voltage stabilizing chip U1 Foot connects one end of the 4th capacitance C4 and the anode of the 8th capacitance C8；2 pins of first voltage stabilizing chip U1, the 4th capacitance C4 it is another The cathode of end and the 8th capacitance C8 are grounded；3 pins of second voltage stabilizing chip U2 connect one end and the 9th capacitance of the 6th capacitance C6 The anode of C9；2 pins, the other end of the 6th capacitance C6 and the cathode of the 9th capacitance C9 of second voltage stabilizing chip U2 is grounded.The 3 pins of one voltage stabilizing chip U1 are the 3.3V output ends+3.3V of power-switching circuit 101.3 pins of second voltage stabilizing chip U2 are 5V output ends+the 5V of power-switching circuit 101.
As shown in figure 3, main control singlechip circuit 102 includes first singlechip U3.The model of first singlechip U3 P89V51.29 pins of first singlechip U3 meet the 5V output ends+5V of power-switching circuit 101,16 pins ground connection, and 38 pins connect 5V output ends+the 5V of power-switching circuit 101, one end of the 5th capacitance C5, the first exclusion RR1 and the second exclusion RR2 it is public Pin.The other end of 5th capacitance C5 is grounded.Four normal pins of first exclusion RR1 with the 34 of first singlechip U3,35, 36,37 pins are respectively connected with.Four normal pins of second exclusion RR2 and 30,31,32,33 pins of first singlechip U3 point Xiang Lian not.One end of 32,33 pins and the 6th button S6 and the 7th button S7 of first singlechip U3 is respectively connected with.6th button The other end of S6 and the 7th button S7 are grounded.4 pins of first singlechip U3 connect one end and the tenth capacitance of first resistor R1 The cathode of C10.The other end of first resistor R1 is grounded.The anode of tenth capacitance C10 connects the 5V output ends of power-switching circuit 101 +5V；14 pins of first singlechip U3 connect one end of the first crystal oscillator Z1 and the 11st capacitance C11, and 15 pins meet the first crystal oscillator Z1 The other end and the 12nd capacitance C12 one end.11st capacitance C11 and the 12nd capacitance C12 other ends are grounded.First is single 12 pins of piece machine U3 connect the cathode of the first buzzer LS1.The anode of first buzzer LS1 meets the 5V of power-switching circuit 101 Output end+5V.18 pins of first singlechip U3 connect one end of the 7th resistance R7, and another termination the 9th of the 7th resistance R7 shines The anode of pipe D9, the cathode ground connection of the 9th luminous tube D9；19 pins of first singlechip U3 connect one end of the 8th resistance R8, and the 8th The anode of the 8th luminous tube D8 of another termination of resistance R8, the cathode ground connection of the 8th luminous tube D8；Draw the 20 of first singlechip U3 Foot connects one end of the 9th resistance R9, and the anode of the 7th luminous tube D7 of another termination of the 9th resistance R9, the 7th luminous tube D7's is negative Pole is grounded；21 pins of first singlechip U3 connect one end of the tenth resistance R10, and another termination the 6th of the tenth resistance R10 shines The anode of pipe D6, the cathode ground connection of the 6th luminous tube D6.1,3,8,9,10,11,30,36,37 pins of first singlechip U3 point Not Wei master control single chip circuit 102 the first control output end to the 9th control output end.First singlechip U3 41,42,43, 44 pins are respectively the first data output end to the 4th data output end of main control singlechip circuit 102.First singlechip U3's 31 pins are the signal interaction end of master control single chip circuit 102.Remaining pin of first singlechip U3 is hanging.
As shown in figure 4, drive signal interface circuit 103 is drive signal connecting terminal block J3.Drive signal connecting terminal Row J3 has 40.1 pin of drive signal connecting terminal block J3 meets the 4th data output end CLK of main control singlechip circuit 102, 3 pins meet the third data output end DIN of main control singlechip circuit 102, and 5 pins connect the first number of main control singlechip circuit 102 According to output end FS；9 pins meet the second data output end CS of main control singlechip circuit 102, and 13 pins connect main control singlechip circuit 102 the 9th control output end DIR1,15 pins connect the 8th control output end DIR2 of main control singlechip circuit 102,25 pins The second control output end L-HOTLID of main control singlechip circuit 102 is met, 26 pins connect the first control of main control singlechip circuit 102 Output end R-HOTLID processed, 2,4,6,8,10,12,14,16,18,20,22,24 and 29 pins connect power-switching circuit 101 3.3V output ends+3.3V, 17 pins meet the third control output end HEATER1 of main control singlechip circuit 102；Drive signal wiring 19 pins of terminal block J3 meet the 4th control output end HEATER2 of main control singlechip circuit 102., 7 pins connect main control singlechip 7th control output end DA_LOAD of circuit 102,27 pins meet the 6th control output end L- of main control singlechip circuit 102 PWM, 28 pins connect the 5th control output end R-PWM of main control singlechip circuit 102,35 pins ground connection.Drive signal terminals Remaining pin of son row J3 is hanging.
As shown in figure 5, current sampling circuit 104 include the first power conversion chip IC1, second source conversion chip IC2, First digital voltage gauge outfit BK1 and the second digital voltage gauge outfit BK2.First power conversion chip IC1, second source conversion chip The model of IC2 is NMK0505SAC.First digital voltage gauge outfit BK1, the second digital voltage gauge outfit BK2 model be FY5140B.First power conversion chip IC1, second source conversion chip IC2 1 pin meet the 5V of power-switching circuit 101 Output end+5V, 2 pins are grounded.
3 pins of first power conversion chip IC1 connect the first terminals TE1-, the 37th resistance of the first fictitious load R37, one end of the 20th capacitance C20,2 pins of the first digital voltage gauge outfit BK1, in the first potentiometer RP1 resistive element one End and movable contact.4 pins of first power conversion chip IC1 connect the other end and the first digital voltage of the 37th resistance R37 3 pins of gauge outfit BK1.One end of the 29th resistance R29 of another termination of resistive element in first potentiometer RP1.29th The other end of resistance R29 and the 20th capacitance C20 meet one end and the first digital voltage gauge outfit BK1 of the 33rd resistance R33 1 pin.Second terminals TE1+ of the first fictitious load of another termination of the 33rd resistance R33.
3 pins of second source conversion chip IC2 connect the first terminals TE2-, the 38th resistance of the second fictitious load R38, one end of the 21st capacitance C21,2 pins of the second digital voltage gauge outfit BK2, resistive element in the second potentiometer RP2 One end and movable contact.4 pins of second source conversion chip IC2 connect the other end and the second number electricity of the 38th resistance R38 Press 3 pins of gauge outfit BK2.One end of the 30th resistance R30 of another termination of the interior resistive element of second potentiometer RP2.30th The other end of resistance R30 and the 21st capacitance C21 connect one end and the second digital voltage gauge outfit of the 34th resistance R34 1 pin of BK2.Second terminals TE2+ of the second fictitious load of another termination of the 34th resistance R34.
As shown in Figures 6 and 7, output interface circuit 105 includes the first transmission connecting terminal block J19 and output wiring terminal row J21.2,4 pins of first transmission connecting terminal block J19 and the first terminals of the first fictitious load, the second fictitious load are distinguished It is connected, 9 pins meet the signal interaction end P0.6 of main control singlechip circuit 102, and 10 pins meet the positive HV+ of motherboard power supply, 17, 18, the first terminals OUT1 of 19,20 pins and third fictitious load, the first terminals OUT2 of the 4th fictitious load, the 5th First terminals OUT3 of fictitious load, the first terminals OUT4 of the 6th fictitious load are respectively connected with.First transmission terminals Remaining pin of son row J19 is hanging.Third fictitious load, the 4th fictitious load, the 5th fictitious load and the 6th fictitious load The second terminals meet the positive HV+ of motherboard power supply 3.
As shown in fig. 7,1,2,9 and 10 pins of output wiring terminal row J21 connect the second wiring of the first fictitious load TE1+, 3,4,11 and 12 pins is held to meet the first terminals TE1- of the first fictitious load, 5,6,13 and 14 pins connect second Second terminals TE2+ of fictitious load, 7,8,15 and 16 pins meet the first terminals TE2- of the second fictitious load.
As shown in figure 8, accessory channel output signal indicating circuit 106 includes the 16th luminous tube D16, the 17th luminous tube D17, the 18th luminous tube D18 and the 19th luminous tube D19.16th luminous tube D16, the 17th luminous tube D17, the 18th hair Anode and eleventh resistor R11, twelfth resistor R12, thirteenth resistor R13, the tenth of light pipe D18, the 19th luminous tube D19 One end of four resistance R14 is respectively connected with.Eleventh resistor R11, twelfth resistor R12, thirteenth resistor R13 and the 14th resistance The other end of R14 connects the positive HV+ of motherboard power supply, the 16th luminous tube D16, the 17th luminous tube D17, the 18th luminous tube D18, the 19th luminous tube D19 cathode and the first terminals OUT1 of third fictitious load, the first of the 4th fictitious load connect Line end OUT2, the first terminals OUT3 of the 5th fictitious load, the 6th fictitious load the first terminals OUT4 be respectively connected with.
As shown in figure 9, storage unit display circuit 201 includes number pipe driving chip U6 and charactron M1.Charactron drives The model TM1623 of dynamic chip U6.The model S02848A-B of charactron.9 and 25 pins of digital pipe driving chip U6 are equal Meet one end of the 24th capacitance C24 and the 5V output ends+5V of power-switching circuit 101.Digital pipe driving chip U6 26, 29, the other end of 32 pins and the 24th capacitance C24 are grounded.Digital pipe driving chip U6 10,11,12,14,15,16, 17,18,19,20,23,24,27,28,30,31 pins and charactron M1 14,16,13,3,5,11,15,7,12,9,10,4, 8,6,2,1 pin is respectively connected with.3,4,5 pins of digital pipe driving chip U6 are respectively the of storage unit display circuit 201 One signal input part DO, second signal input terminal CO, third signal input part SO.Remaining pin of digital pipe driving chip U6 is equal Vacantly.
As shown in Figure 10, display button interface circuit 202 includes the first communications line terminal block J4.First communications line end 8,10,12,14,16 pins of son row J4 are pressed with the first button S1, the second button S2, third button S3, the 4th button S4, the 5th One end of key S5 is respectively connected with.First button S1, the second button S2, third button S3, the 4th button S4 and the 5th button S5 The other end is grounded.11 and 13 pins of first communications line terminal block J4 connect the 5V output ends of power-switching circuit 101+ The pins of 5V, 7 and 9 are grounded, and 1,3,5 pins and the first signal input part DO of storage unit display circuit 201, second signal are defeated Enter to hold CO, third signal input part SO to be respectively connected with.Remaining pin of first communications line terminal block J4 is hanging.
As shown in figure 11, memory cell data processing circuit 203 includes second singlechip U4.The model of second singlechip U4 For P89V51.29 pins of second singlechip U4 connect the 5V output ends+5V of power-switching circuit 101,16 pins ground connection, 38 pins Meet 5V output ends+5V, one end of the 25th capacitance C25, third exclusion RR3 and the 4th exclusion RR4 of power-switching circuit 101 Common pin.The other end of 25th capacitance C25 is grounded.Four normal pins and second singlechip of third exclusion RR3 34,35,36,37 pins of U4 are respectively connected with.Four normal pins of 4th exclusion RR4 with the 30 of second singlechip U4,31, 32,33 pins are respectively connected with.4 pins of second singlechip U4 meet one end and the 26th capacitance C26 of the 15th resistance R15 Cathode.The other end of 15th resistance R15 is grounded.The anode of 26th capacitance C26 connects the 5V outputs of power-switching circuit 101 End+5V；14 pins of second singlechip U4 connect one end of the second crystal oscillator Z2 and the 27th capacitance C27, and 15 pins connect the second crystalline substance Shake the other end of Z2 and one end of the 28th capacitance C28.27th capacitance C27 and the 28th capacitance C28 other ends are equal Ground connection.32 pins of second singlechip U4 connect the cathode of the second buzzer LS2.The anode of second buzzer LS2 connects power supply conversion 5V output ends+the 5V of circuit 101.Second singlechip U4 40,41,42,43,44,1,2,3,18,19,20,21,22,23,24, 25 pins are respectively the first signal input part to the 16th signal input part of memory cell data processing circuit 203.Second is single 30,31 pins of piece machine U4 are respectively IIC clock end SCL2, the IIC bi-directional datas end of memory cell data processing circuit 203 SDA2.35,36,37 pins of second singlechip U4 are respectively the first display output end of memory cell data processing circuit 203 SI, the second display output end CI, third show output end DI.33 pins of second singlechip U4 are memory cell data processing electricity The signal interaction end F on road 203.Remaining pin of second singlechip U4 is hanging.
As shown in figure 12, data storage circuit 204 includes storage chip U5.The model 24C01 of storage chip U5.It deposits 1,2,3,4 and 7 pins of storage chip U5 are grounded, and 8 pins connect one end and the power-switching circuit 101 of the 29th capacitance C29 5V output ends+5V.The other end of 29th capacitance C29 is grounded.At 5,6 pins and memory cell data of storage chip U5 IIC bi-directional datas end SDA2, IIC clock end SCL2 of reason circuit 203 is respectively connected with.
As shown in Figs. 13 and 14, feedback signal conversion circuit 205 includes four the first signal feedback units and two second Signal feedback unit.First signal feedback unit includes the first optocoupler P1.The first input end of first optocoupler P1 connects the 45th One end of resistance R45, the first output end ground connection, second output terminal connect one end of the 46th resistance R46.46th resistance 5V output ends+the 5V of another termination power-switching circuit 101 of R46；
As shown in figure 14, second signal feedback unit includes the second optocoupler P2 and third optocoupler P3.The of second optocoupler P2 The second input terminal of one input terminal and third optocoupler P3 connect one end of the 16th resistance R16.The second input of second optocoupler P2 End is connected with the first input end of third optocoupler P3；The first output end of second optocoupler P2 and third optocoupler P3 are grounded；Second The second output terminal of optocoupler P2 connects one end of the 17th resistance R17.Another termination power-switching circuit of 17th resistance R17 101 5V output ends+5V；The second output terminal of third optocoupler P3 connects one end of the 18th resistance R18.18th resistance R18's 5V output ends+the 5V of another termination power-switching circuit 101.
That end far from the first optocoupler P1 of the 45th resistance R45 is connected to one in four the first signal feedback units It rises, the first analog input end as feedback signal conversion circuit 205.First optocoupler P1 in four the first signal feedback units The second input terminal be respectively feedback signal conversion circuit 205 four the second analog input ends.Four the first signal feedbacks The first signal input part to the 4th letter of the second output terminal of first optocoupler P1 and memory cell data processing circuit 203 in unit Number input terminal is respectively connected with.
That end far from the second optocoupler P2 of the 16th resistance R16 is respectively feedback letter in two second signal feedback units Two third analog input ends of number conversion circuit 205.The second of the second optocoupler P2 is defeated in two second signal feedback units Enter two the 4th analog input ends that end is respectively feedback signal conversion circuit 205.In two second signal feedback units 5th letter of the second output terminal of two optocoupler P2, the second output terminal of third optocoupler P3 and memory cell data processing circuit 203 Number input terminal to the 8th signal input part is respectively connected with.
As shown in figs, memory cell signal interface circuit 206 includes the second communications line terminal block J15 and the tenth Six connecting terminal block J16.7 and 9 pins of second communications line terminal block J15 are grounded, and 11 and 13 pins connect power supply conversion 5V output ends+the 5V of circuit 101, the third of 1,3,5 pins and memory cell data processing circuit 203 show output end DI, the Two display output end CI, the first display output end SI are respectively connected with.Second communications line terminal block J15 2,4,6,8,10,12, 14, the 9th signal input part to the 16th signal input part of 16 pins and memory cell data processing circuit 203 is respectively connected with.
As shown in figure 16,9 pins of the second transmission connecting terminal block J16 connect the letter of memory cell data processing circuit 203 Number interaction end.Two third analog quantitys of 1,3 pins and feedback signal conversion circuit 205 of the second transmission connecting terminal block J16 Input terminal is respectively connected with.Second transmits two the 4th of 2,4 pins of connecting terminal block J16 and feedback signal conversion circuit 205 Analog input end is respectively connected with, the first analog input end of the reversed feedback signal conversion circuit of 10 pins 205,17,18,19, Four the second analog input ends of 20 pins and feedback signal conversion circuit 205 are respectively connected with.Second communications line terminal block Remaining pin of the transmission connecting terminal blocks of J15 and second J16 is hanging.
20 pins of 20 pins of the first transmission connecting terminal block J19 and the second transmission connecting terminal block J16 It is respectively connected with a 20 core wire beams.20 pins and the second communications line terminal block of first communications line terminal block J4 20 pins of J15 are respectively connected with a 20 core wire beams
The principle of the present invention is as follows：
In power-switching circuit 101, the reversed protection of the 5th anti-power supplys of diode D5 is used, if power supply is reversed, moment handle Power supply short circuit is burnt, to protect subsequent circuit.First capacitance C1 and the second capacitance C2 is input filter capacitor, keeps input electric Pressure is more stablized.Power module U7 is isolation Voltage stabilizing module, the voltage and export to other circuits that it inputs motherboard power supply Voltage electric is kept apart, and makes motherboard power supply will not front and back interference with other circuits.And power module U7 can be defeated by 12V voltages Go out to the first voltage stabilizing chip U1 and the second voltage stabilizing chip U2.12V voltages are converted into 3.3V voltages by the first voltage stabilizing chip U1.Second 12V voltages are converted into 5V voltages by voltage stabilizing chip U2.Third capacitance C3, the 4th capacitance C4, the 6th capacitance C7, the 7th capacitance C7, 8th capacitance C8, the 9th capacitance C9 are filter capacitor.The module is the reliable supply voltage of other circuit with stable.
In main control singlechip circuit 102, first resistor R1 and the tenth capacitance C10 form electrification reset circuit, ensure first Microcontroller U3 restarts work after fully powered up.First crystal oscillator Z1, the 11st capacitance C11 and the 12nd capacitance C12 compositions system System clock, gives mono- stable machine cycle of first singlechip U3.First exclusion RR1 and the second exclusion RR2 is microcontroller U3 P0 mouthfuls of pull-up resistors, for giving P0 stomatopods enough promotion abilities.First buzzer LS1 for send out the 6th button S6 and the 7th by The operation indicating sound of key S7.User selects different working conditions by the operational order of the 6th button S6 and the 7th button S7. 6th luminous tube D6, the 7th luminous tube D7, the 8th luminous tube D8 and the 9th luminous tube D9 are used for display working condition, and make first Microcontroller U3 is run according to pre-set programs.
In current sampling circuit 104, because the electric power network of Board Under Test delivery outlet is floating ground structure, current sampling circuit 104 by the first power conversion chip IC1, second source conversion chip IC2 by the first digital voltage gauge outfit BK1, second number The power supply of voltmeter head BK2 respectively isolates.Because the output current for Board Under Test is very big, in order to ensure precision, output electricity Flow valuve converts after sampling out voltage from load both ends and gets.Reduction formula such as formula (1)：
In formula (1), U is the voltage value that digital voltage gauge outfit is shown；Ui is the voltage value at fictitious load both ends；RP is the 4th Potentiometer RP4, the 5th potentiometer RP5；Ra is with regard to the 29th resistance R29, the 30th resistance R30 in circuit；Rb is with regard in circuit The 33rd resistance R33, the 34th resistance R34.
Main channel output indicating circuit 105 is TE output indicating circuits.Independent output to connect the first fictitious load refers to For showing unit.If the voltage at the first fictitious load both ends is more than TVS pipe D1 parameter voltages values, 3rd resistor R3 and TVS pipe D1 forms a regulator circuit, and the 20th luminous tube D20 is driven after the 14th resistance R14 current limlitings with TVS pipe D1 parameter voltages With the 24th luminous tube D24；If the voltage at the first fictitious load both ends is less than TVS pipe D1 parameter voltages values, the first simulation The voltage for loading both ends is directly driven the 15th luminous tube D15 and second after 3rd resistor R3 and the 14th resistance R14 current limlitings 14 luminous tube D24.Because the voltage at the first fictitious load both ends has positive and negative values, the 20th luminous tube D20 and the 20th Four luminous tube D24 respectively show the working condition of reversal.
Load in cooling fan driving circuit 106, the selection of inductance L1 will according to the output voltage of switching regulator IC U7, The parameter selections such as maximum input voltage, maximum load current.Selection method is as follows：First, electricity is calculated according to formula (2) formula Press microsecond constant (ET)：
ET=(Vin-Vout) × Vout/Vin × 1000/f formulas (2)
In formula (2), it is the output of switching regulator IC U7 that Vin, which is the maximum input voltage of switching regulator IC U7, Vout, Voltage, f are the working oscillation frequency values (52kHz) of switching regulator IC U7.After ET is determined, according to corresponding electricity in Figure 17 Microsecond constant and load current curve is pressed to search the inductance value L of inductance L1.
The value meeting formula (3) of the capacitance C of 18th capacitance C18
C >=13300Vin/Vout × L formulas (3)
In formula (3), L is the inductance value of the first inductance L1, and unit is μ H.The pressure voltage of 18th capacitance C18 should be greater than 1.5~2 times of rated output voltage.For 12V voltage outputs, it is recommended to use pressure voltage is the capacitance of 25V.
The load current value of 28th diode D28 is more than 1.2 times of maximum load current, it is contemplated that load short circuits Maximum current of the load current value more than switching regulator IC U7 of situation, the 28th diode D28 limits.28th The backward voltage of pole pipe D28 is more than 1.25 times of switching regulator IC U7 maximum input voltages.In the present embodiment, the 28th Pole pipe D28 selects the Schottky diode of 1N582x series.
The voltage of motherboard power supply output by be directly inputted to after the 17th capacitance C17 filtering switching regulator IC U7 1, 3 pins；5 pins of switching regulator IC U7 are output Enable Pins, are set as effective after ground connection；4 pins are high impedance reference voltage End, 2 pins are output ends；6th connecting terminal block J6 connects the cooling fan of load；18th capacitance C18 and the 19th capacitance C19 is output filter capacitor；Second resistance R2, the 28th resistance R28 and the 5th potentiometer RP5 are output to heat dissipation with making adjustments The voltage of wind turbine is output to the specific voltage value Uo such as formulas (4) of cooling fan：
In formula (4), VREF is the reference voltage value of switching regulator IC U7, is herein 1.23V.
The present apparatus is suitble to the aging of the PCR driving plates of model BYQ5615, BYQ5071 and BYQ5078.Model There are three the PCR driving plates tools of BYQ5615 to external port, is control port, output port and power port respectively.Model There are four the PCR driving plates tools of BYQ5071 to external port, is control port, output port, auxiliary output terminal mouth and power supply respectively Port.There are three the PCR driving plates tools of model BYQ5071 to external port, is control port, output port and power end respectively Mouthful.
The present invention is as follows to the operation principle for being carried out aging by side plate of model BYQ5078：
Step 1: the control port of third connecting terminal block J3 and Board Under Test in drive signal interface circuit 103 is connected. The output port of output wiring terminal row J21 and Board Under Test in output interface circuit 105 are connected.By the power end of Board Under Test Mouth is connected with the positive HV+ of motherboard power supply, cathode HV-.
Step 2: user passes through the 6th button S6 and the 7th button S7 setting aging moulds in main control singlechip circuit 102 Formula.First singlechip U3 in main control singlechip circuit 102 connects according to pre-set programs to third in drive signal interface circuit 103 Line terminals row J3 controls signal accordingly, and Board Under Test is made to be powered up from output port to fictitious load.In current sampling circuit 104 One digital voltage gauge outfit BK1, the second digital voltage gauge outfit BK2 show current two-way electric current.Meanwhile the voltage on fictitious load Pass through the second communication in the first transmission connecting terminal block J19, memory cell signal interface circuit 206 in output interface circuit 105 Connecting terminal block J15 is transferred to feedback signal conversion circuit 205 and is converted into switching value, is transmitted further to memory cell data processing electricity Road 203 is handled, and includes on the charactron M1 of storage unit display circuit 201 by detection code if component is normal； If wrong, by the error code detected include on the charactron M1 of storage unit display circuit 201, and will detection To error code storage in storage chip U5 in data storage circuit 204, and in memory cell data processing circuit 203 Second buzzer LS2 sends out alarm.

Claims (9)

  1. The driver circuit board test aging equipment of 1.PCR instruments；Including motherboard power supply, control mainboard and fictitious load group；It is special Sign is：The fictitious load group is negative including the first fictitious load, the second fictitious load, third fictitious load, the 4th simulation Load, the 5th fictitious load and the 6th fictitious load；The control mainboard include power-switching circuit, main control singlechip circuit, Current sampling circuit, output interface circuit, accessory channel output signal indicating circuit, storage unit display circuit, display button Interface circuit, memory cell data processing circuit, data storage circuit, feedback signal conversion circuit and memory cell signal connect Mouth circuit；Power-switching circuit is main control singlechip electricity by power voltage step down module, the first voltage stabilizing chip and the second voltage stabilizing chip Road, current sampling circuit, storage unit display circuit, memory cell data processing circuit, data storage circuit and feedback letter The power supply of number conversion circuit；Main control singlechip circuit sends drive signal by first singlechip to drive signal interface circuit；Electricity Stream sample circuit shows the first fictitious load, the second simulation respectively by the first digital voltage gauge outfit, the second digital voltage gauge outfit Load the voltage value at both ends；After feedback signal conversion circuit converts the voltage value received to switching value by photoelectrical coupler It is transferred to memory cell data processing circuit；Memory cell data processing circuit is connected with storage unit display circuit；
    Drive signal interface circuit is drive signal connecting terminal block；1 pin of drive signal connecting terminal block connects master control monolithic 4th data output end on electromechanical road, 3 pins connect the third data output end of main control singlechip circuit, and 5 pins connect master control monolithic First data output end on electromechanical road；9 pins connect the second data output end of main control singlechip circuit, and 13 pins connect master control monolithic 9th control output end on electromechanical road, 15 pins connect the 8th control output end of main control singlechip circuit, and 25 pins connect master control list Second control output end on piece electromechanics road, 26 pins connect the first control output end of main control singlechip circuit, 2,4,6,8,10, 12,14,16,18,20,22,24 and 29 pins connect the 3.3V output ends of power-switching circuit, and 17 pins connect main control singlechip The third control output end of circuit, 19 pins connect the 4th control output end of main control singlechip circuit, and 7 pins connect master control monolithic 7th control output end on electromechanical road, 27 pins connect the 6th control output end of main control singlechip circuit, and 28 pins connect master control 5th control output end of single chip circuit, 35 pins ground connection；
    Output interface circuit includes the first transmission connecting terminal block, output wiring terminal row；2, the 4 of first transmission connecting terminal block First terminals of pin and the first fictitious load, the second fictitious load are respectively connected with, and 9 pins connect the letter of main control singlechip circuit Number interaction end, 10 pins connect the anode of motherboard power supply, the first terminals of 17,18,19,20 pins and third fictitious load, the The first terminals difference of first terminals of four fictitious loads, the first terminals of the 5th fictitious load, the 6th fictitious load It is connected；The second wiring termination mainboard electricity of third fictitious load, the 4th fictitious load, the 5th fictitious load and the 6th fictitious load The anode in source；
    1,2,9 and 10 pins of output wiring terminal row connect the second terminals of the first fictitious load, 3,4,11 and 12 pins Connect the first terminals of the first fictitious load, 5,6,13 and 14 pins connect the second terminals of the second fictitious load, 7,8, 15 and 16 pins connect the first terminals of the second fictitious load；
    Display button interface circuit includes the first communications line terminal block；8,10,12,14, the 16 of first communications line terminal block One end of pin and the first button, the second button, third button, the 4th button, the 5th button is respectively connected with；First button, Two buttons, third button, the 4th button and the 5th button the other end be grounded；Draw 11 and the 13 of first communications line terminal block Foot connects the 5V output ends of power-switching circuit, and 7 and 9 pins are grounded, 1,3,5 pins and the first of storage unit display circuit Signal input part, second signal input terminal, third signal input part are respectively connected with；
    Memory cell signal interface circuit includes the second communications line terminal block and the second transmission connecting terminal block；Second communication connects 7 and 9 pins of line terminals row are grounded, and 11 and 13 pins connect the 5V output ends of power-switching circuit, 1,3,5 pins and storage The third of cell data processing circuit shows that output end, the second display output end, the first display output end are respectively connected with；Second is logical 9th signal input part of 2,4,6,8,10,12,14,16 pins and memory cell data processing circuit of interrogating connecting terminal block is extremely 16th signal input part is respectively connected with；
    9 pins of the second transmission connecting terminal block connect the signal interaction end of memory cell data processing circuit；Second transmission wiring 1,3 pins of terminal block and two third analog input ends of feedback signal conversion circuit are respectively connected with；Second transmission wiring 2,4 pins of terminal block are respectively connected with two the 4th analog input ends of feedback signal conversion circuit；Second transmission wiring First analog input end of the reversed feedback signal conversion circuit of 10 pins of terminal block；Second transmission connecting terminal block 17,18, 19, four the second analog input ends of 20 pins and feedback signal conversion circuit are respectively connected with；
    Drive signal interface circuit is drive signal connecting terminal block；1 pin of drive signal connecting terminal block connects master control monolithic 4th data output end on electromechanical road, 3 pins connect the third data output end of main control singlechip circuit, and 5 pins connect master control monolithic First data output end on electromechanical road；9 pins connect the second data output end of main control singlechip circuit, and 13 pins connect master control monolithic 9th control output end on electromechanical road, 15 pins connect the 8th control output end of main control singlechip circuit, and 25 pins connect master control list Second control output end on piece electromechanics road, 26 pins connect the first control output end of main control singlechip circuit, 2,4,6,8,10, 12,14,16,18,20,22,24 and 29 pins connect the 3.3V output ends of power-switching circuit, and 17 pins connect main control singlechip The third control output end of circuit, 19 pins connect the 4th control output end of main control singlechip circuit, and 7 pins connect master control monolithic 7th control output end on electromechanical road, 27 pins connect the 6th control output end of main control singlechip circuit, and 28 pins connect master control 5th control output end of single chip circuit, 35 pins ground connection；
    Piece 20 cores of 20 pins for 20 pins of the first transmission connecting terminal block and the second transmission connecting terminal block Harness is respectively connected with；20 pins of the first communications line terminal block and 20 pins of the second communications line terminal block are used A piece 20 core wire beams are respectively connected with.
  2. 2. the driver circuit board test aging equipment of PCR instrument according to claim 1, it is characterised in that：The electricity Power-switching circuit includes the first voltage stabilizing chip, the second voltage stabilizing chip and power voltage step down module；The type of the power voltage step down module Number be SUCS102412C；The model SP1117M3-3.3 of first voltage stabilizing chip；The type of second voltage stabilizing chip Number be NCP1117DT50G；1 pin of power voltage step down module connects motherboard power supply anode, the cathode of the 5th diode D5, the first electricity Hold anode and one end of the second capacitance C2 of C1,2,3 pins connect the cathode of motherboard power supply, the anode of the 5th diode D5, the The cathode of one capacitance C1 and the second capacitance C2 other ends, 4 pins connect the anode of the 7th capacitance C7, one end of third capacitance C3, 1 pin of one voltage stabilizing chip and 1 pin of the second voltage stabilizing chip, 5 pins are hanging, the cathode and of 6 pins and the 7th capacitance C7 The other end of three capacitance C3 is connected and is grounded；3 pins of the first voltage stabilizing chip meet one end and the 8th capacitance C8 of the 4th capacitance C4 Anode；2 pins, the other end of the 4th capacitance C4 and the cathode of the 8th capacitance C8 of first voltage stabilizing chip are grounded；Second is steady 3 pins of pressure chip connect one end of the 6th capacitance C6 and the anode of the 9th capacitance C9；2 pins of the second voltage stabilizing chip, the 6th electricity The cathode of the other end and the 9th capacitance C9 that hold C6 is grounded；3 pins of the first voltage stabilizing chip are the 3.3V of power-switching circuit Output end；3 pins of the second voltage stabilizing chip are the 5V output ends of power-switching circuit.
  3. 3. the driver circuit board test aging equipment of PCR instrument according to claim 1, it is characterised in that：Master control monolithic Electromechanical road includes first singlechip；The model P89V51 of first singlechip；29 pins of first singlechip connect power supply conversion electricity The 5V output ends on road, 16 pins ground connection, 38 pins connect the 5V output ends of power-switching circuit, one end of the 5th capacitance C5, first The common pin of exclusion and the second exclusion；The other end of 5th capacitance C5 is grounded；Four normal pins and first of first exclusion 34,35,36,37 pins of microcontroller are respectively connected with；Four normal pins of the second exclusion and the 30 of first singlechip, 31,32, 33 pins are respectively connected with；One end of 32,33 pins and the 6th button and the 7th button of first singlechip is respectively connected with；6th presses The other end of key and the 7th button is grounded；4 pins of first singlechip meet one end and the tenth capacitance C10 of first resistor R1 Cathode；The other end of first resistor R1 is grounded；The anode of tenth capacitance C10 connects the 5V output ends of power-switching circuit；First is single 14 pins of piece machine connect one end of the first crystal oscillator Z1 and the 11st capacitance C11, and 15 pins connect the other end and of the first crystal oscillator Z1 One end of 12 capacitance C12；11st capacitance C11 and the 12nd capacitance C12 other ends are grounded；12 pins of first singlechip Connect the cathode of the first buzzer；The anode of first buzzer connects the 5V output ends of power-switching circuit；Draw the 18 of first singlechip Foot connects one end of the 7th resistance R7, and the anode of the 9th luminous tube D9 of another termination of the 7th resistance R7, the 9th luminous tube D9's is negative Pole is grounded；19 pins of first singlechip meet one end of the 8th resistance R8, the 8th luminous tube D8 of another termination of the 8th resistance R8 Anode, the 8th luminous tube D8 cathode ground connection；20 pins of first singlechip meet one end of the 9th resistance R9, the 9th resistance R9 The 7th luminous tube D7 of another termination anode, the 7th luminous tube D7 cathode ground connection；21 pins of first singlechip connect the tenth One end of resistance R10, the anode of the 6th luminous tube D6 of another termination of the tenth resistance R10, the cathode ground connection of the 6th luminous tube D6； 1,3,8,9,10,11,30,36,37 pins of first singlechip be respectively the first control output end of main control singlechip circuit extremely 9th control output end；41,42,43,44 pins of first singlechip are respectively the first data output of main control singlechip circuit It holds to the 4th data output end；31 pins of first singlechip are the signal interaction end of master control single chip circuit；First singlechip Remaining pin it is hanging.
  4. 4. the driver circuit board test aging equipment of PCR instrument according to claim 1, it is characterised in that：Current sampling Circuit includes the first power conversion chip, second source conversion chip, the first digital voltage gauge outfit and the second digital voltage gauge outfit； First power conversion chip, second source conversion chip model be NMK0505SAC；First digital voltage gauge outfit, the second number The model of word voltmeter head is FY5140B；First power conversion chip, second source conversion chip 1 pin connect power supply The 5V output ends of conversion circuit, 2 pins are grounded；
    3 pins of the first power conversion chip connect the first terminals of the first fictitious load, the 37th resistance R37, the 20th One end of capacitance C20,2 pins of the first digital voltage gauge outfit, one end of resistive element and movable contact in the first potentiometer；First electricity 4 pins of source conversion chip connect the other end of the 37th resistance R37 and 3 pins of the first digital voltage gauge outfit；First current potential One end of the 29th resistance R29 of another termination of resistive element in device；29th resistance R29's and the 20th capacitance C20 is another One end connects one end of the 33rd resistance R33 and 1 pin of the first digital voltage gauge outfit；33rd resistance R33's is another Terminate the second terminals of the first fictitious load；
    3 pins of second source conversion chip connect the first terminals of the second fictitious load, the 38th resistance R38, the 20th One end of one capacitance C21,2 pins of the second digital voltage gauge outfit, one end of resistive element and movable contact in the second potentiometer；Second 4 pins of power conversion chip connect the other end of the 38th resistance R38 and 3 pins of the second digital voltage gauge outfit；Second electricity One end of the 30th resistance R30 of another termination of the interior resistive element of position device；30th resistance R30's and the 21st capacitance C21 The other end connects one end of the 34th resistance R34 and 1 pin of the second digital voltage gauge outfit；34th resistance R34 it is another Second terminals of one the second fictitious load of termination.
  5. 5. the driver circuit board test aging equipment of PCR instrument according to claim 1, it is characterised in that：Accessory channel Output signal indicating circuit includes the 16th luminous tube D16, the 17th luminous tube D17, the hairs of the 18th luminous tube D18 and the 19th Light pipe D19；The anode of 16th luminous tube D16, the 17th luminous tube D17, the 18th luminous tube D18, the 19th luminous tube D19 It is respectively connected with one end of eleventh resistor R11, twelfth resistor R12, thirteenth resistor R13, the 14th resistance R14；Tenth One resistance R11, twelfth resistor R12, thirteenth resistor R13 and the 14th resistance R14 the other end connecing motherboard power supply just Pole, the 16th luminous tube D16, the 17th luminous tube D17, the 18th luminous tube D18, the cathode of the 19th luminous tube D19 and First terminals of three fictitious loads, the first terminals of the 4th fictitious load, the first terminals of the 5th fictitious load, the 6th First terminals of fictitious load are respectively connected with.
  6. 6. the driver circuit board test aging equipment of PCR instrument according to claim 1, it is characterised in that：Storage unit Data processing circuit includes second singlechip；The model P89V51 of second singlechip；29 pins of second singlechip connect power supply The 5V output ends of conversion circuit, 16 pins ground connection, 38 pins meet the 5V output ends of power-switching circuit, the 25th capacitance C25 One end, third exclusion and the 4th exclusion common pin；The other end of 25th capacitance C25 is grounded；The four of third exclusion 34,35,36,37 pins of a normal pins and second singlechip are respectively connected with；Four normal pins and second of 4th exclusion 30,31,32,33 pins of microcontroller are respectively connected with；4 pins of second singlechip connect one end and second of the 15th resistance R15 The cathode of 16 capacitance C26；The other end of 15th resistance R15 is grounded；The anode of 26th capacitance C26 connects power supply conversion electricity The 5V output ends on road；14 pins of second singlechip connect one end of the second crystal oscillator and the 27th capacitance C27, and 15 pins connect second One end of the other end of crystal oscillator and the 28th capacitance C28；27th capacitance C27 and the 28th capacitance C28 other ends are equal Ground connection；32 pins of second singlechip connect the cathode of the second buzzer；The anode of second buzzer meets the 5V of power-switching circuit Output end；40,41,42,43,44,1,2,3,18,19,20,21,22,23,24,25 pins of second singlechip are respectively to store First signal input part of cell data processing circuit is to the 16th signal input part；30,31 pins of second singlechip are distinguished IIC clock ends, IIC bi-directional datas end for memory cell data processing circuit；35,36,37 pins of second singlechip are distinguished Output end is shown for the first display output end, the second display output end, third of memory cell data processing circuit；Second monolithic 33 pins of machine are the signal interaction end of memory cell data processing circuit.
  7. 7. the driver circuit board test aging equipment of PCR instrument according to claim 1, it is characterised in that：Storage unit Display circuit includes digital pipe driving chip sum number code pipe；The model TM1623 of digital pipe driving chip；The model of charactron For S02848A-B；9 and 25 pins of digital pipe driving chip connect one end and the power-switching circuit of the 24th capacitance C24 5V output ends；26,29,32 pins of digital pipe driving chip and the other end of the 24th capacitance C24 are grounded；Charactron 10,11,12,14,15,16,17,18,19,20,23,24,27,28,30,31 pins of driving chip with the 14 of charactron M1, 16,13,3,5,11,15,7,12,9,10,4,8,6,2,1 pin is respectively connected with；3,4,5 pins of digital pipe driving chip are distinguished For the first signal input part, second signal input terminal, third signal input part of storage unit display circuit.
  8. 8. the driver circuit board test aging equipment of PCR instrument according to claim 1, it is characterised in that：Data store Device circuit includes storage chip；The model 24C01 of storage chip；1,2,3,4 and 7 pins of storage chip are grounded, 8 pins Connect one end of the 29th capacitance C29 and the 5V output ends of power-switching circuit；The other end of 29th capacitance C29 is grounded； 5,6 pins of storage chip are respectively connected with the IIC bi-directional datas end of memory cell data processing circuit, IIC clock ends.
  9. 9. the driver circuit board test aging equipment of PCR instrument according to claim 1, it is characterised in that：Feedback signal Conversion circuit includes four the first signal feedback units and two second signal feedback units；First signal feedback unit includes the One optocoupler；The first input end of first optocoupler connects one end of the 45th resistance R45, the first output end ground connection, second output terminal Connect one end of the 46th resistance R46；The 5V output ends of another termination power-switching circuit of 46th resistance R46；
    Second signal feedback unit includes the second optocoupler and third optocoupler；The first input end of second optocoupler and the of third optocoupler Two input terminals connect one end of the 16th resistance R16；Second input terminal of the second optocoupler and the first input end phase of third optocoupler Even；First output end of the second optocoupler and third optocoupler is grounded；The second output terminal of second optocoupler connects the 17th resistance R17's One end；The 5V output ends of another termination power-switching circuit of 17th resistance R17；The second output terminal of third optocoupler connects the tenth One end of eight resistance R18；The 5V output ends of another termination power-switching circuit of 18th resistance R18；
    That end far from the first optocoupler of the 45th resistance R45 links together in four the first signal feedback units, as First analog input end of feedback signal conversion circuit；Second input terminal of the first optocoupler in four the first signal feedback units Respectively four the second analog input ends of feedback signal conversion circuit；First optocoupler in four the first signal feedback units Second output terminal and the first signal input part to the fourth signal input terminal of memory cell data processing circuit are respectively connected with；
    That end far from the second optocoupler of the 16th resistance R16 is respectively feedback signal conversion in two second signal feedback units Two third analog input ends of circuit；The second input terminal of the second optocoupler is respectively anti-in two second signal feedback units Two the 4th analog input ends of feedback signal conversion circuit；Second output of the second optocoupler in two second signal feedback units It holds, the 5th signal input part to the 8th signal input part of the second output terminal and memory cell data processing circuit of third optocoupler It is respectively connected with.
CN201810494429.9A 2018-05-22 2018-05-22 Drive circuit board test aging device of PCR instrument Active CN108490343B (en)

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Cited By (4)

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Publication number Priority date Publication date Assignee Title
CN109817132A (en) * 2019-02-22 2019-05-28 重庆两江联创电子有限公司 Liquid crystal display die set test board
CN111289781A (en) * 2020-03-25 2020-06-16 滨州新大新机电科技有限公司 Terminal board detection interface
CN113489475A (en) * 2021-07-29 2021-10-08 深圳市德堡数控技术有限公司 Digital and PWM composite controller
WO2024119796A1 (en) * 2022-12-06 2024-06-13 浙江桃园智能科技有限公司 Digital communication protocol driving circuit

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CN206818851U (en) * 2017-04-17 2017-12-29 浙江机电职业技术学院 Portable LED lamp aging tester
CN208443970U (en) * 2018-05-22 2019-01-29 杭州博日科技有限公司 A kind of driver circuit plate aging test device of PCR instrument

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CN109817132A (en) * 2019-02-22 2019-05-28 重庆两江联创电子有限公司 Liquid crystal display die set test board
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WO2024119796A1 (en) * 2022-12-06 2024-06-13 浙江桃园智能科技有限公司 Digital communication protocol driving circuit

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