CN207895037U - A kind of detection device of step-down switching type integrated voltage-stabilized chip - Google Patents
A kind of detection device of step-down switching type integrated voltage-stabilized chip Download PDFInfo
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- CN207895037U CN207895037U CN201820142086.5U CN201820142086U CN207895037U CN 207895037 U CN207895037 U CN 207895037U CN 201820142086 U CN201820142086 U CN 201820142086U CN 207895037 U CN207895037 U CN 207895037U
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- 101100443250 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) DIG1 gene Proteins 0.000 claims description 3
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- 101100421134 Schizosaccharomyces pombe (strain 972 / ATCC 24843) sle1 gene Proteins 0.000 claims description 3
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- 230000006837 decompression Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
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- 238000004088 simulation Methods 0.000 description 7
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Abstract
The utility model is related to a kind of detection devices of step-down switching type integrated voltage-stabilized chip, belong to detection technique field.The utility model include power module, external circuit module, IC, pin handover module, voltage sample module, microcontroller, key-press module, LCD MODULE and controlled by sound and light module；Power module, external circuit module, voltage sample module, microcontroller are sequentially connected, IC, pin handover module, external circuit module be sequentially connected, pin handover module, key-press module, LCD MODULE and controlled by sound and light module are connect with microcontroller simultaneously；The utility model inputs chip model by key-press module, and the quality of chip is prompted by liquid crystal display and sound and light signal, it is capable of the quality of quickly and conveniently detection chip, when avoiding in circuit using multimeter detection chip quality, the accident of wafer damage is caused to occur due to inadvertent, meanwhile it is simple in structure, it is easy to operate.
Description
Technical field
The utility model is related to a kind of detection devices of step-down switching type integrated voltage-stabilized chip, belong to switch power technology neck
Domain.
Background technology
Currently, in switch power technology field, the application of step-down switching integrated voltage-stabilized chip is more frequent, and is being depressured
The failure occurred in circuit build process is more, and people survey the current potential of each pin of chip to judge chip usually using multimeter
Quality, still, in detection process, since distance is closer between chip pin, people are short by adjacent pin due to error
Road and so that the thing of wafer damage is happened occasionally, so as to cause circuit malfunction, bring certain economic loss.
Invention content
The technical problems to be solved in the utility model is：The utility model provides a kind of step-down switching type integrated voltage-stabilized chip
Detection device, for solve the problems, such as step-down switching integrated voltage-stabilized chip quality detect；It avoids and uses general-purpose in circuit
When table detection chip quality, the accident of wafer damage is caused to occur due to inadvertent.
The utility model people input chip model to microcontroller, monolithic by key-press module and 1602 LCD MODULEs
The pin of machine output control signal switching chip is simultaneously accessed external circuit, so that chip is worked under the cooperation of external circuit, monolithic
Machine judges the quality of chip by the voltage signal between each pin of A/D sampling A/D chips, and in liquid crystal display screen display core
The working condition of piece, and prompt according to sound and light signal the quality of chip.
Technical solutions of the utility model are：A kind of detection device of step-down switching type integrated voltage-stabilized chip, including power supply mould
Block 1, external circuit module 2, IC seats 3, pin handover module 4, voltage sample module 5, IAP microcontrollers 6, key-press module 7,1602 liquid
Brilliant display module 8 and controlled by sound and light module 9；The power module 1, external circuit module 2, voltage sample module 5, IAP microcontrollers 6
It is sequentially connected, IC seats 3, pin handover module 4, external circuit module 2 are sequentially connected, pin handover module 4, key-press module 7,1602
LCD MODULE 8 and controlled by sound and light module 9 are connect with IAP microcontrollers 6 simultaneously；
The power module 1 includes transformer 10, rectifier bridge 11, capacitance C1, C2, LM7812 integrated stable voltage circuit 12；Institute
State 220V alternating currents pass sequentially through after the decompression of transformer 10,11 rectification of rectifier bridge, capacitance C1, C2 filtering with LM7812 integrated voltage-stabilizeds
1 foot of circuit 12 and the connection of 2 feet, the voltage of output+12V is as external circuit between 3 feet and 2 feet of LM7812 integrated stable voltage circuits 12
The power supply of module 2；
The external circuit module 2 include capacitance C3, C4, C5, C6, Schottky diode IN5822, inductance L, resistance R1,
R2；In parallel capacitance C3, C4 successively between 3 feet and 2 feet of the LM7812 integrated stable voltage circuits 12, Schottky diode IN5822
Cathode connect with one end of inductance L, the plus earth of Schottky diode IN5822；Between the other end and ground of inductance L successively
In parallel filter capacitor C5, C6, are connected in parallel on the both ends of capacitance C6, the both ends after resistance R1, R2 series connection are made after resistance R1, R2 series connection
For the output end Uo of external circuit module 2, one end of resistance R1 is connect with the anode of output end Uo, one end of resistance R2 and output end
The cathode of Uo connects；
The pin handover module 4 includes mono- 8 channels mono- 8 channel number word control simulant electronic switch I, the CD4051 of CD4051
Digital control mono- 8 channel number word of simulant electronic switch II, CD4051 controls mono- 8 channel number word of simulant electronic switch III, CD4051
Control the mono- 8 channel number word control simulant electronic switch V of simulant electronic switch IV, CD4051；The mono- 8 channel number word controls of CD4051
The ends COM of simulant electronic switch I, II, III, IV, V processed are connect with the terminal of IC seats 31,2,3,4,5 respectively；CD4051 mono- 8 is logical
The vdd terminal of road digital control simulant electronic switch I, II, III, IV, V are connect after connecting simultaneously with+5V power supplys, and CD4051 mono- 8 is logical
The ends VEE, the ends VSS, the ends INH of road digital control simulant electronic switch I, II, III, IV, V are grounded after connecting simultaneously；CD4051 is mono-
It is connect with one end of capacitance C4 after the ends the Y0 connection of 8 channel number words control simulant electronic switch I, II, III, IV, V, capacitance C4's
The other end is grounded；It is grounded after the ends the Y1 connection of mono- 8 channel number word control simulant electronic switch I, II, III, IV, the V of CD4051,
After the ends the Y2 connection of CD4051 mono- 8 channel number word control simulant electronic switches I, II, III, IV, V with two pole of IN5822 Schottky
The cathode of pipe connects, the ends Y3 of mono- 8 channel number word control simulant electronic switch I, II, III, IV, the V of CD4051 connect after with resistance
The connecting pin of R1, R2 connect, and the ends Y4 of mono- 8 channel number word control simulant electronic switch I, II, III, IV, the V of CD4051 connect successively
It connects；A, B of CD4051 mono- 8 channel number word control simulant electronic switches I, C-terminal respectively connected IAP microcontrollers 6 P2.5,
The end P2.4, P2.3 connects, and A, B of the mono- 8 channel number word control simulant electronic switch II of CD4051, C-terminal respectively connected IAP monolithics
The end P2.2, P2.1, P2.0 of machine 6 connects, and A, B of the mono- 8 channel number word control simulant electronic switch III of CD4051, C-terminal connect respectively
Then the end P4.5, P2.7, P2.6 connection of IAP microcontrollers 6, the A of the mono- 8 channel number word control simulant electronic switch IV of CD4051,
B, C-terminal respectively connected the end P3.4, P3.3, P3.2 connection of IAP microcontrollers 6, and mono- 8 channel number words of CD4051 control simulation electronic
A, B of switch V, C-terminal respectively connected the end P1.7, P1.6, P1.5 connection of IAP microcontrollers 6；
The end Y0, Y1, Y2, Y3, Y4 of described mono- 8 channel number word control simulant electronic switch I, II, III, IV, V of CD4051
It is connect respectively with the input terminal of external circuit module 2, ground terminal, output end, feedback end, control terminal；（Specific connection type is shown in upper one
Section and next section in specific descriptions）；
The voltage sample module 5 includes resistance R3, R4, R5, R6；It is connected in parallel on external circuit after resistance R3, R4 series connection
The both ends of 2 output end Uo of module, the connecting pin of resistance R3, R4 are connect with the ends P1.2 of IAP microcontrollers 6, IAP microcontrollers 6
The ends P1.0 are connect with the connecting pin of resistance R1, R2；The mono- 8 channel number word control simulations of CD4051 are connected in parallel on after resistance R5, R6 series connection
The ends Y4 and the ends Y1 of electronic switch I, II, III, IV, V, the connecting pin of resistance R5, R6 are connect with the ends P1.1 of IAP microcontrollers 6.
The key-press module 7 include CH452 driving chips 13, button KEY0, KEY1, KEY2, KEY3, KEY4, KEY5,
KEY6, KEY7, KEY8, KEY9, KEY10, KEY11, resistance R8, R9, R10, R11, R12, R13, R14, R15, R16, R17；Institute
Connected by the ends SEG0 of resistance R15 and CH452 driving chips 13 after stating one end connection of button KEY0, KEY1, KEY2, KEY3
It connects, is connected by the ends SEG1 of resistance R16 and CH452 driving chips 13 after one end connection of button KEY4, KEY5, KEY6, KEY7
It connects, passes through the ends SEG2 of resistance R17 and CH452 driving chips 13 after one end connection of button KEY8, KEY9, KEY10, KEY11
Connection；Connected by the ends DIG3 of resistance R14 and CH452 driving chips 13 after the other end connection of button KEY0, KEY4, KEY8
It connects, is connect with the ends DIG2 of CH452 driving chips 13 by resistance R13 after the other end connection of button KEY1, KEY5, KEY9,
It is connect, is pressed with the ends DIG1 of CH452 driving chips 13 by resistance R12 after the other end connection of button KEY2, KEY6, KEY10
It is connect with the ends DIG0 of CH452 driving chips 13 by resistance R11 after the other end connection of key KEY3, KEY7, KEY11, CH452
The ends H3L2 of driving chip 13, the ends GND ground connection, the ends ADRR, the ends VCC of CH452 driving chips 13 are connect with+5V power ends,
The ends INT of CH452 driving chips 13, the ends SDA, the ends SCL respectively by the ends P3.7 of resistance R8, R9, R10 and IAP microcontroller 6,
The ends P1.4, the connection of the ends P1.3.
The ends D0 of 1602 liquid crystal display 8, the ends D1, the ends D2, the ends D3, the ends D4, the ends D5, the ends D6, the ends D7, the ends RS, RW
End, the ends E respectively with the ends P0.0 of IAP microcontrollers 6, the ends P0.1, the ends P0.2, the ends P0.3, the ends P0.4, the ends P0.5, the ends P0.6, P0.7
End, the ends P4.4, the ends P4.2, the connection of the ends P4.1；With 1602 after being filtered by shunt capacitance C8, C9 successively between+5V power ends and ground
The vdd terminal of liquid crystal display 8 is connected with the ends VSS, the vdd terminals of 1602 liquid crystal displays 8 and the ends BLA with connect, the ends VSS with
The ends BLK connect, and the vdd terminal of 1602 liquid crystal displays 8, the ends VL, the ends VSS are connect with 1 foot of potentiometer RW, 2 feet, 3 feet respectively.
The controlled by sound and light module 9 includes buzzer 14, LED light, capacitance C7, resistance R7, triode T；+ the 5V
By being connect with the ends VCC of IAP microcontrollers 6 and the ends GND after shunt capacitance C7 between power end and ground, the ends P5.5 of IAP microcontrollers 6
It is connect simultaneously with the base stage of the anode of LED light, triode T by resistance R7, the minus earth of LED light, triode T
Emitter ground connection, the collector of triode T connect by buzzer 14 with+5V power ends.
Working principle of the present invention is as follows：
The present invention inputs the chip model of step-down switching type integrated voltage-stabilized chip to be detected by key-press module 7 to IAP
Microcontroller 6, IAP microcontrollers 6 export corresponding low and high level signal control pin handover module 4 and switch pin so that IC seats 3
Corresponding with the external circuit module 2 port connection respectively of 5 pins, make chip to be detected under the cooperation of outer circuit module 2
Work, IAP microcontrollers 6 by A/D sample the voltage signal between each pin of chip to be detected to judge the quality of chip, and
The working condition of display chip on 1602 liquid crystal displays 8, and prompt according to sound and light signal the quality of chip.
The reason of pin switching is carried out in the utility model is：Due to the step-down switching type integrated voltage-stabilized core of different model
Piece its pin function definition is different, but its external circuit tested is identical, in order in the same external circuit mould
The quality that step-down switching type integrated voltage-stabilized chip is tested in block 2, needs pin handover module 4 to step-down switching type integrated voltage-stabilized core
The pin of piece switches over.
The utility model has the beneficial effects that：
The utility model provides a kind of detection device of step-down switching type integrated voltage-stabilized chip, and people are defeated by key-press module
Enter chip model, and prompts the quality of chip by liquid crystal display and sound and light signal, it being capable of quickly and conveniently detection chip
Quality, avoid in circuit use multimeter detection chip quality when, the thing of wafer damage is caused due to inadvertent
Therefore occur, meanwhile, it is simple in structure, it is easy to operate.
Description of the drawings
Fig. 1 is the principles of the present invention block diagram；
Fig. 2 is the circuit diagram of the utility model.
Each label in Fig. 1~2：1- power modules, 2- external circuit module, 3-IC, 4- pins handover module, 5- voltages adopts
Egf block, 6-IAP microcontrollers, 7- key-press modules, 8-1602 LCD MODULEs, 9- controlled by sound and light module, 10- transformers, 11-
Rectifier bridge, 12-LM7812 integrated stable voltage circuits, 13-CH452 driving chips, 14- buzzers, LED-LED indicator lights, R1~
R17- resistance, C1~C9- capacitances, KEY0~KEY11- buttons, L- inductance, IN5822- Schottky diodes, CD4051- mono- 8 are logical
The digital control simulant electronic switch in road, T- triodes, RW- potentiometers.
Specific implementation mode
Utility model will be further explained below with reference to the attached drawings and specific embodiments.
Embodiment 1：As shown in Fig. 1~2, a kind of detection device of step-down switching type integrated voltage-stabilized chip, including power supply mould
Block 1, external circuit module 2, IC seats 3, pin handover module 4, voltage sample module 5, IAP microcontrollers 6, key-press module 7,1602 liquid
Brilliant display module 8 and controlled by sound and light module 9；The power module 1, external circuit module 2, voltage sample module 5, IAP microcontrollers 6
It is sequentially connected, IC seats 3, pin handover module 4, external circuit module 2 are sequentially connected, pin handover module 4, key-press module 7,1602
LCD MODULE 8 and controlled by sound and light module 9 are connect with IAP microcontrollers 6 simultaneously；
The power module 1 includes transformer 10, rectifier bridge 11, capacitance C1, C2, LM7812 integrated stable voltage circuit 12；Institute
State 220V alternating currents pass sequentially through after the decompression of transformer 10,11 rectification of rectifier bridge, capacitance C1, C2 filtering with LM7812 integrated voltage-stabilizeds
1 foot of circuit 12 and the connection of 2 feet, the voltage of output+12V is as external circuit between 3 feet and 2 feet of LM7812 integrated stable voltage circuits 12
The power supply of module 2；
The external circuit module 2 include capacitance C3, C4, C5, C6, Schottky diode IN5822, inductance L, resistance R1,
R2；In parallel capacitance C3, C4 successively between 3 feet and 2 feet of the LM7812 integrated stable voltage circuits 12, Schottky diode IN5822
Cathode connect with one end of inductance L, the plus earth of Schottky diode IN5822；Between the other end and ground of inductance L successively
In parallel filter capacitor C5, C6, are connected in parallel on the both ends of capacitance C6, the both ends after resistance R1, R2 series connection are made after resistance R1, R2 series connection
For the output end Uo of external circuit module 2, one end of resistance R1 is connect with the anode of output end Uo, one end of resistance R2 and output end
The cathode of Uo connects；
The pin handover module 4 includes mono- 8 channels mono- 8 channel number word control simulant electronic switch I, the CD4051 of CD4051
Digital control mono- 8 channel number word of simulant electronic switch II, CD4051 controls mono- 8 channel number word of simulant electronic switch III, CD4051
Control the mono- 8 channel number word control simulant electronic switch V of simulant electronic switch IV, CD4051；The mono- 8 channel number word controls of CD4051
The ends COM of simulant electronic switch I, II, III, IV, V processed are connect with the terminal of IC seats 31,2,3,4,5 respectively；CD4051 mono- 8 is logical
The vdd terminal of road digital control simulant electronic switch I, II, III, IV, V are connect after connecting simultaneously with+5V power supplys, and CD4051 mono- 8 is logical
The ends VEE, the ends VSS, the ends INH of road digital control simulant electronic switch I, II, III, IV, V are grounded after connecting simultaneously；CD4051 is mono-
It is connect with one end of capacitance C4 after the ends the Y0 connection of 8 channel number words control simulant electronic switch I, II, III, IV, V, capacitance C4's
The other end is grounded；It is grounded after the ends the Y1 connection of mono- 8 channel number word control simulant electronic switch I, II, III, IV, the V of CD4051,
After the ends the Y2 connection of CD4051 mono- 8 channel number word control simulant electronic switches I, II, III, IV, V with two pole of IN5822 Schottky
The cathode of pipe connects, the ends Y3 of mono- 8 channel number word control simulant electronic switch I, II, III, IV, the V of CD4051 connect after with resistance
The connecting pin of R1, R2 connect, and the ends Y4 of mono- 8 channel number word control simulant electronic switch I, II, III, IV, the V of CD4051 connect successively
It connects；A, B of CD4051 mono- 8 channel number word control simulant electronic switches I, C-terminal respectively connected IAP microcontrollers 6 P2.5,
The end P2.4, P2.3 connects, and A, B of the mono- 8 channel number word control simulant electronic switch II of CD4051, C-terminal respectively connected IAP monolithics
The end P2.2, P2.1, P2.0 of machine 6 connects, and A, B of the mono- 8 channel number word control simulant electronic switch III of CD4051, C-terminal connect respectively
Then the end P4.5, P2.7, P2.6 connection of IAP microcontrollers 6, the A of the mono- 8 channel number word control simulant electronic switch IV of CD4051,
B, C-terminal respectively connected the end P3.4, P3.3, P3.2 connection of IAP microcontrollers 6, and mono- 8 channel number words of CD4051 control simulation electronic
A, B of switch V, C-terminal respectively connected the end P1.7, P1.6, P1.5 connection of IAP microcontrollers 6；
The end Y0, Y1, Y2, Y3, Y4 of described mono- 8 channel number word control simulant electronic switch I, II, III, IV, V of CD4051
It is connect respectively with the input terminal of external circuit module 2, ground terminal, output end, feedback end, control terminal；（Specific connection type is shown in upper one
Section and next section in specific descriptions）；
The voltage sample module 5 includes resistance R3, R4, R5, R6；It is connected in parallel on external circuit after resistance R3, R4 series connection
The both ends of 2 output end Uo of module, the connecting pin of resistance R3, R4 are connect with the ends P1.2 of IAP microcontrollers 6, IAP microcontrollers 6
The ends P1.0 are connect with the connecting pin of resistance R1, R2；The mono- 8 channel number word control simulations of CD4051 are connected in parallel on after resistance R5, R6 series connection
The ends Y4 and the ends Y1 of electronic switch I, II, III, IV, V, the connecting pin of resistance R5, R6 are connect with the ends P1.1 of IAP microcontrollers 6.
Further, the key-press module 7 include CH452 driving chips 13, button KEY0, KEY1, KEY2, KEY3,
KEY4, KEY5, KEY6, KEY7, KEY8, KEY9, KEY10, KEY11, resistance R8, R9, R10, R11, R12, R13, R14, R15,
R16、R17；Pass through resistance R15 and CH452 driving chips 13 after one end connection of described button KEY0, KEY1, KEY2, KEY3
The ends SEG0 connect, and pass through resistance R16 and CH452 driving chips 13 after one end connection of button KEY4, KEY5, KEY6, KEY7
The ends SEG1 connect, and pass through resistance R17 and CH452 driving chip 13 after one end connection of button KEY8, KEY9, KEY10, KEY11
The ends SEG2 connection；Pass through resistance R14 and CH452 driving chips 13 after the other end connection of button KEY0, KEY4, KEY8
The ends DIG3 connect, and pass through the DIG2 of resistance R13 and CH452 driving chips 13 after the other end connection of button KEY1, KEY5, KEY9
End connection passes through the ends DIG1 of resistance R12 and CH452 driving chips 13 after the other end connection of button KEY2, KEY6, KEY10
Connection is connected after the other end connection of button KEY3, KEY7, KEY11 by the ends DIG0 of resistance R11 and CH452 driving chips 13
It connects, the ends H3L2 of CH452 driving chips 13, the ends GND ground connection, the ends ADRR, the ends VCC and the+5V power ends of CH452 driving chips 13
Connection, the ends INT, the ends SDA, the ends SCL of CH452 driving chips 13 pass through resistance R8, R9, R10 and IAP microcontroller 6 respectively
The ends P3.7, the ends P1.4, the connection of the ends P1.3.
Further, the ends D0, the ends D1, the ends D2, the ends D3, the ends D4, the ends D5, the ends D6 of 1602 liquid crystal display 8, D7
End, the ends RS, the ends RW, the ends E respectively with the ends P0.0 of IAP microcontrollers 6, the ends P0.1, the ends P0.2, the ends P0.3, the ends P0.4, the ends P0.5,
The ends P0.6, the ends P0.7, the ends P4.4, the ends P4.2, the connection of the ends P4.1；It is filtered by shunt capacitance C8, C9 successively between+5V power ends and ground
Connect with the vdd terminal of 1602 liquid crystal displays 8 and the ends VSS after wave, the vdd terminals of 1602 liquid crystal displays 8 and the ends BLA with connect,
Its end VSS is connect with the ends BLK, the vdd terminals of 1602 liquid crystal displays 8, the ends VL, the ends VSS respectively with 1 foot of potentiometer RW, 2 feet, 3
Foot connects.
Further, the controlled by sound and light module 9 includes buzzer 14, LED light, capacitance C7, resistance R7, triode
T；By being connect with the ends VCC of IAP microcontrollers 6 and the ends GND after shunt capacitance C7 between the+5V power ends and ground, IAP microcontrollers
6 ends P5.5 are connect with the base stage of the anode of LED light, triode T simultaneously by resistance R7, and the cathode of LED light connects
Ground, the emitter ground connection of triode T, the collector of triode T are connect by buzzer 14 with+5V power ends.
Working principle of the present invention is as follows：
The present invention inputs the chip model of step-down switching type integrated voltage-stabilized chip to be detected by key-press module 7 to IAP
Microcontroller 6, IAP microcontrollers 6 export corresponding low and high level signal control pin handover module 4 and switch pin so that IC seats 3
Corresponding with the external circuit module 2 port connection respectively of 5 pins, make chip to be detected under the cooperation of outer circuit module 2
Work, IAP microcontrollers 6 by A/D sample the voltage signal between each pin of chip to be detected to judge the quality of chip, and
The working condition of display chip on 1602 liquid crystal displays 8, and prompt according to sound and light signal the quality of chip.
The reason of pin switching is carried out in the utility model is：Due to the step-down switching type integrated voltage-stabilized core of different model
Piece its pin function definition is different, but its external circuit tested is identical, in order in the same external circuit mould
The quality that step-down switching type integrated voltage-stabilized chip is tested in block 2, needs pin handover module 4 to step-down switching type integrated voltage-stabilized core
The pin of piece switches over.
Further, the specific work process of the present invention is as follows：
A, 6 storage inside of the IAP microcontrollers pin information of a variety of step-down switching type integrated voltage-stabilized chips；
B, by the IC of the insertion in order seats 3 of step-down switching type integrated voltage-stabilized chip；
C, power on, the model for being detected chip is inputted on key-press module 7, and on 1602 LCD MODULEs 8
The inputted chip model of display；
D, IAP microcontrollers 6 export corresponding low and high level signal according to the chip model that key-press module 7 is inputted and control
A, B, C-terminal in pin handover module 4, to pin handover module 4 switch pin make 5 pins of IC seats 3 respectively with outside
Corresponding port connection in circuit module 2；
The end Y0, Y1, Y2, Y3, Y4 of pin handover module 4 respectively with the input terminal, ground terminal, output of external circuit module 2
End, feedback end, control terminal connection；If desired the ends COM of the mono- 8 channel number word control simulant electronic switches of CD4051 are connect with the ends Y0
When, 2 corresponding ports of IAP microcontrollers output signal to A, B of the mono- 8 channel number word control simulant electronic switches of CD4051, C-terminal,
A, B of the mono- 8 channel number word control simulant electronic switches of CD4051, C-terminal are respectively low level, low level, low level signal；If needing
When the ends COM of the mono- 8 channel number word control simulant electronic switches of CD4051 being wanted to be connect with the ends Y1, the output of 2 corresponding ports of IAP microcontrollers
Signal controls A, B of simulant electronic switch, C-terminal, the mono- 8 channel number word control simulation electricity of CD4051 to mono- 8 channel number words of CD4051
A, B of sub switch, C-terminal are respectively high level, low level, low level signal；If desired the mono- 8 channel number word control simulations of CD4051
When the ends COM of electronic switch are connect with the ends Y2,2 corresponding ports of IAP microcontrollers output signal to the mono- 8 channel number word controls of CD4051
A, B of simulant electronic switch, C-terminal, A, B of CD4051 mono- 8 channel number word control simulant electronic switches, C-terminal be respectively low level,
High level, low level signal；If desired when the ends COM of the mono- 8 channel number word control simulant electronic switches of CD4051 are connect with the ends Y3,
2 corresponding ports of IAP microcontrollers output signal to A, B of the mono- 8 channel number word control simulant electronic switches of CD4051, C-terminal, CD4051
A, B of single 8 channel number words control simulant electronic switch, C-terminal are respectively high level, high level, low level signal；If desired
When the ends COM of the mono- 8 channel number word control simulant electronic switches of CD4051 are connect with the ends Y4,2 corresponding ports of IAP microcontrollers output letter
A, B, C-terminal number to CD4051 mono- 8 channel number word control simulant electronic switches, the mono- 8 channel number word control simulation electronics of CD4051
A, B of switch, C-terminal are respectively low level, low level, high level signal；
Since the permutation and combination situation of chip pin there are 25 kinds, the progress of one of which chip situation is accordingly enumerated
Illustrate, it is specific as follows：
When detected chip pin 1~5 is respectively input terminal, ground terminal, output end, feedback end, control terminal, IAP
The end P2.5, P2.4, P2.3 of microcontroller 6 exports low level, low level, low level signal and gives CD4051 mono- 8 channel number words respectively
A, B, the C-terminal of simulant electronic switch I are controlled, the ends COM of single 8 channel number words control simulant electronic switch I and Y0 terminations are logical；IAP
The end P2.2, P2.1, P2.0 of microcontroller 6 exports high level, low level, low level signal and gives CD4051 mono- 8 channel number words respectively
A, B, the C-terminal of simulant electronic switch II are controlled, the ends COM of single 8 channel number words control simulant electronic switch II and Y1 terminations are logical；
The end P4.5, P2.7, P2.6 of IAP microcontrollers 6 exports low level, high level, low level signal and gives CD4051 mono- 8 port numbers respectively
Word controls A, B of simulant electronic switch III, C-terminal, and the ends COM of single 8 channel number words control simulant electronic switch III are terminated with Y2
It is logical；It is logical to CD4051 mono- 8 that the end P3.4, P3.3, P3.2 of IAP microcontrollers 6 exports high level, high level, low level signal respectively
A, B of the digital control simulant electronic switch IV in road, C-terminal, the ends COM and the ends Y3 of single 8 channel number words control simulant electronic switch IV
It connects；The end P1.7, P1.6, P1.5 of IAP microcontrollers 6 exports low level, low level, high level signal to CD4051 mono- 8 respectively
Channel number word controls A, B of simulant electronic switch V, C-terminal, the ends COM and the ends Y4 of single 8 channel number words control simulant electronic switch V
It connects；
E, the voltage sampled is transmitted to IAP microcontrollers 6 by voltage sample module 5, if the control terminal for being detected chip is height
Level is effective, is shown when the ends P1.1 of IAP microcontrollers 6 detect high level signal, on 1602 LCD MODULEs 8 and is detected core
The voltage of piece control terminal, detected chip can work normally；Then, the ends P1.0 of IAP microcontrollers 6 detect 1.2V~1.5V
Level signal when, illustrate that the feedback terminal voltage of chip under test is correct, the ends P1.2 of IAP microcontrollers 6 detect+4V~+6V electricity
When pressure, illustrate that the output voltage of chip under test is correct, at this point, the ends P5.5 of IAP microcontrollers 6 export low level signal, LED indication
Lamp do not shine, buzzer not sounding, and " SUCCESS " is shown on 1602 LCD MODULEs 8, illustrate it is tested correctly；If IAP monolithics
The signal that the ends P1.0, the ends P1.2 of machine 2 detect is unsatisfactory for above-mentioned condition, then the ends the P5.5 output high level letter of IAP microcontrollers 6
Number, LED light shines, buzzer sends out prompting sound, shows " ERROR " on 1602 LCD MODULEs 8, illustrates chip under test
Damage；
If the control terminal for being detected chip is that high level is effective, but the ends P1.1 of IAP microcontrollers 6 detect that low level is believed
Number when, on 1602 LCD MODULEs 8 display be detected the voltage of chip controls end, detected chip is turned off, and chip cannot
The ends P5.5 of normal work, IAP microcontrollers 6 export high level signal, and LED light shines, buzzer sends out prompting sound, and 1602
" ERROR " is shown on LCD MODULE 8, illustrates that chip under test damages；
F, it is completed, closes power supply.
Specific embodiment of the utility model is explained in detail above in conjunction with attached drawing, but the utility model and unlimited
In above-described embodiment, within the knowledge of a person skilled in the art, the utility model can also not departed from
Various changes can be made under the premise of objective.
Claims (4)
1. a kind of detection device of step-down switching type integrated voltage-stabilized chip, it is characterised in that：Including power module（1）, external circuit
Module（2）, IC（3）, pin handover module（4）, voltage sample module（5）, IAP microcontrollers（6）, key-press module（7）、1602
LCD MODULE（8）With controlled by sound and light module（9）；The power module（1）, external circuit module（2）, voltage sample module
（5）, IAP microcontrollers（6）It is sequentially connected, IC（3）, pin handover module（4）, external circuit module（2）It is sequentially connected, pin is cut
Change the mold block（4）, key-press module（7）, 1602 LCD MODULEs（8）With controlled by sound and light module（9）Simultaneously with IAP microcontrollers（6）
Connection；
The power module（1）Including transformer（10）, rectifier bridge（11）, capacitance C1, C2, LM7812 integrated stable voltage circuit
（12）；The 220V alternating currents pass sequentially through transformer（10）Decompression, rectifier bridge（11）After rectification, capacitance C1, C2 filtering with
LM7812 integrated stable voltage circuits（12）1 foot and 2 feet connection, LM7812 integrated stable voltage circuits（12）3 feet and 2 feet between output+
The voltage of 12V is as external circuit module（2）Power supply；
The external circuit module（2）Including capacitance C3, C4, C5, C6, Schottky diode IN5822, inductance L, resistance R1, R2；
The LM7812 integrated stable voltage circuits（12）3 feet and 2 feet between in parallel capacitance C3, C4 successively, Schottky diode IN5822
Cathode connect with one end of inductance L, the plus earth of Schottky diode IN5822；Between the other end and ground of inductance L successively
In parallel filter capacitor C5, C6, are connected in parallel on the both ends of capacitance C6, the both ends after resistance R1, R2 series connection are made after resistance R1, R2 series connection
For external circuit module（2）Output end Uo, one end of resistance R1 connect with the anode of output end Uo, one end of resistance R2 and output
Hold the cathode connection of Uo；
The pin handover module（4）Mono- 8 port number of simulant electronic switch I, CD4051 is controlled including mono- 8 channel number words of CD4051
Word controls mono- 8 channel number word of simulant electronic switch II, CD4051 and controls the mono- 8 channel number word control of simulant electronic switch III, CD4051
The mono- 8 channel number word control simulant electronic switch V of simulant electronic switch IV, CD4051 processed；The mono- 8 channel number word controls of CD4051
The ends COM of simulant electronic switch I, II, III, IV, V respectively with IC（3）Terminal 1,2,3,4,5 connect；CD4051 mono- 8 is logical
The vdd terminal of road digital control simulant electronic switch I, II, III, IV, V are connect after connecting simultaneously with+5V power supplys, and CD4051 mono- 8 is logical
The ends VEE, the ends VSS, the ends INH of road digital control simulant electronic switch I, II, III, IV, V are grounded after connecting simultaneously；CD4051 is mono-
It is connect with one end of capacitance C4 after the ends the Y0 connection of 8 channel number words control simulant electronic switch I, II, III, IV, V, capacitance C4's
The other end is grounded；It is grounded after the ends the Y1 connection of mono- 8 channel number word control simulant electronic switch I, II, III, IV, the V of CD4051,
After the ends the Y2 connection of CD4051 mono- 8 channel number word control simulant electronic switches I, II, III, IV, V with two pole of IN5822 Schottky
The cathode of pipe connects, the ends Y3 of mono- 8 channel number word control simulant electronic switch I, II, III, IV, the V of CD4051 connect after with resistance
The connecting pin of R1, R2 connect, and the ends Y4 of mono- 8 channel number word control simulant electronic switch I, II, III, IV, the V of CD4051 connect successively
It connects；A, B of the mono- 8 channel number word control simulant electronic switch I of CD4051, C-terminal respectively connected IAP microcontrollers（6）P2.5,
The end P2.4, P2.3 connects, and A, B of the mono- 8 channel number word control simulant electronic switch II of CD4051, C-terminal respectively connected IAP monolithics
Machine（6）The connection of the end P2.2, P2.1, P2.0, A, B of CD4051 mono- 8 channel number word control simulant electronic switches III, C-terminal are distinguished
It is connected to IAP microcontrollers（6）The connection of the end P4.5, P2.7, P2.6, mono- 8 channel number words of CD4051 control simulant electronic switch IV
A, B, C-terminal respectively connected IAP microcontrollers（6）The connection of the end P3.4, P3.3, P3.2, CD4051 mono- 8 channel number word control moulds
A, B of quasi- electronic switch V, C-terminal respectively connected IAP microcontrollers（6）The end P1.7, P1.6, P1.5 connection；
The voltage sample module（5）Including resistance R3, R4, R5, R6；It is connected in parallel on external circuit mould after resistance R3, R4 series connection
Block（2）The both ends of output end Uo, the connecting pin of resistance R3, R4 and IAP microcontrollers（6）The ends P1.2 connection, IAP microcontrollers（6）
The ends P1.0 connect with the connecting pin of resistance R1, R2；The mono- 8 channel number word control moulds of CD4051 are connected in parallel on after resistance R5, R6 series connection
The ends Y4 of quasi- electronic switch I, II, III, IV, V and the ends Y1, the connecting pin of resistance R5, R6 and IAP microcontrollers（6）The ends P1.1 connect
It connects.
2. the detection device of step-down switching type integrated voltage-stabilized chip according to claim 1, it is characterised in that：The button
Module（7）Including CH452 driving chips（13）, button KEY0, KEY1, KEY2, KEY3, KEY4, KEY5, KEY6, KEY7,
KEY8, KEY9, KEY10, KEY11, resistance R8, R9, R10, R11, R12, R13, R14, R15, R16, R17；The button KEY0,
Pass through resistance R15 and CH452 driving chip after one end connection of KEY1, KEY2, KEY3（13）The ends SEG0 connection, button
Pass through resistance R16 and CH452 driving chip after one end connection of KEY4, KEY5, KEY6, KEY7（13）The ends SEG1 connection, press
Pass through resistance R17 and CH452 driving chip after one end connection of key KEY8, KEY9, KEY10, KEY11（13）The ends SEG2 connect
It connects；Pass through resistance R14 and CH452 driving chip after the other end connection of button KEY0, KEY4, KEY8（13）The ends DIG3 connect
It connects, passes through resistance R13 and CH452 driving chip after the other end connection of button KEY1, KEY5, KEY9（13）The ends DIG2 connect
It connects, passes through resistance R12 and CH452 driving chip after the other end connection of button KEY2, KEY6, KEY10（13）The ends DIG1 connect
It connects, passes through resistance R11 and CH452 driving chip after the other end connection of button KEY3, KEY7, KEY11（13）The ends DIG0 connect
It connects, CH452 driving chips（13）The ends H3L2, the ends GND ground connection, CH452 driving chips（13）The ends ADRR, the ends VCC and+5V electricity
Source connects, CH452 driving chips（13）The ends INT, the ends SDA, the ends SCL pass through resistance R8, R9, R10 and IAP microcontroller respectively
（6）The ends P3.7, the ends P1.4, the ends P1.3 connection.
3. the detection device of step-down switching type integrated voltage-stabilized chip according to claim 1, it is characterised in that：Described 1602
Liquid crystal display（8）The ends D0, the ends D1, the ends D2, the ends D3, the ends D4, the ends D5, the ends D6, the ends D7, the ends RS, the ends RW, the ends E respectively with IAP
Microcontroller（6）The ends P0.0, the ends P0.1, the ends P0.2, the ends P0.3, the ends P0.4, the ends P0.5, the ends P0.6, the ends P0.7, the ends P4.4,
The ends P4.2, the connection of the ends P4.1；Between+5V power ends and ground by shunt capacitance C8, C9 successively filter after with 1602 liquid crystal displays
（8）Vdd terminal connected with the ends VSS, 1602 liquid crystal displays（8）Vdd terminal and the ends BLA with connect, the ends VSS connect with the ends BLK
It connects, 1602 liquid crystal displays（8）Vdd terminal, the ends VL, the ends VSS connect with 1 foot of potentiometer RW, 2 feet, 3 feet respectively.
4. the detection device of step-down switching type integrated voltage-stabilized chip according to claim 1, it is characterised in that：The acousto-optic
Control module（9）Including buzzer（14）, LED light, capacitance C7, resistance R7, triode T；Between+5V the power ends and ground
By after shunt capacitance C7 with IAP microcontrollers（6）The ends VCC connected with the ends GND, IAP microcontrollers（6）The ends P5.5 pass through resistance
R7 is connect with the base stage of the anode of LED light, triode T simultaneously, the minus earth of LED light, the emitter of triode T
Ground connection, the collector of triode T pass through buzzer（14）It is connect with+5V power ends.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108303637A (en) * | 2018-01-29 | 2018-07-20 | 昆明理工大学 | A kind of detection device and method of step-down switching type integrated voltage-stabilized chip |
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