CN105188009A - Earphone line short circuit automatic detection and repairing method and device - Google Patents
Earphone line short circuit automatic detection and repairing method and device Download PDFInfo
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- CN105188009A CN105188009A CN201510549709.1A CN201510549709A CN105188009A CN 105188009 A CN105188009 A CN 105188009A CN 201510549709 A CN201510549709 A CN 201510549709A CN 105188009 A CN105188009 A CN 105188009A
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Abstract
The invention discloses an earphone line short circuit automatic detection and repairing method and device. The device mainly comprises a 24V switch power supply, a 5V power supply conversion module, an earphone socket for accommodating an earphone insertion pin to be detected, a detection module and a repairing module for detecting and repairing earphones, a NO.1 relay group connected with the earphone socket, and a single-chip computer minimum system, wherein the 24V switch power supply is connected with an external AC; the output end of the 24V switch power supply is connected with the NO.1 relay group and the repairing module; the NO.1 relay group is connected with the detection module, the repairing module and the single-chip computer minimum system; and the single-chip computer minimum system is connected with a short circuit alarm light module. The detected short-circuit line is connected with quantitative current to carry out repairing by utilizing a method of connecting a large voltage, so that lapped thin wires in the short-circuit line are enabled to be fused to disconnect a short-circuit loop, and the purpose of repairing is achieved. Detection and repairing operation can be done easily and quickly without cutting off the line, thereby preventing waste of process and materials.
Description
Technical field
The present invention relates to the processing of earphone wire, detect and assembling service procedure, is the instrument that a kind of earphone wire for being short-circuited carries out automatic detection and rehabilitation.
Background technology
Earphone wire and earphone contact pin there will be connection not at the same level and cause short circuit when welding.Conventional method, when processing short circuit earphone wire, usually utilizes functional tester manually to detect the wire product be short-circuited, is then cut off by contact pin weld wire rod, then peels off plastic housing recovery contact pin.This complex procedures, and wire segment is scrapped because size is inadequate.
Summary of the invention
The technical problem to be solved in the present invention is, for the short circuit problem that earphone wire and earphone contact pin occur, a kind of automatic inspection and repair method of earphone wire short circuit and device are provided, automatically can detect the instrument also repairing short circuit wire rod, only need in the female seat of wire rod inserting instrument during use.After startup instrument, just start working, perform the operation such as detection, reparation successively, simple and fast, do not need wire rod to cut off, avoid the waste of operation and material.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is:
The automatic inspection and repair device of a kind of earphone wire short circuit, in outer case, hardware circuit is set, it is characterized in that: described hardware circuit mainly comprise 24V Switching Power Supply, 5V power transfer module, for hold earphone contact pin to be detected socket and headset, for detecting earphone with the detection module repaired and repairing a relay group being connected with socket and headset of module and single-chip minimum system, wherein, 24V Switching Power Supply is connected with external AC, the output of 24V Switching Power Supply respectively with a relay group, repair model calling; Relay group respectively with detection module, repair module, single-chip minimum system is connected, single-chip minimum system also connects short-circuit alarming lamp module; 5V power transfer module is connected with alternating current, and the output end power+5V of 5V power transfer module is connected with single-chip minimum system, detection module, reparation module, relay group, a short-circuit alarming lamp module respectively; A described relay group is often opened two normally closed relays by two 8 pins two and is formed; Socket and headset is for drawing the 4 piece wires corresponding with four of earphone plug wire branch roads, and these 4 wires are connected with 4 normally closed ports of a relay group.
In technique scheme, described outer case is provided with: with the earphone jack that socket and headset matches, with the corresponding red light of short-circuit alarming lamp module and green light, corresponding and for the push-button switch of control single chip computer and the circumscripted power line plug for introducing alternating current with single-chip minimum system.
In technique scheme, described single-chip minimum system comprises singlechip chip U1, the pin 1 of chip U1 respectively with one end of resistance R5 and reset switch SW ?one end of PB be connected, the other end of resistance R5 is connected with power supply+5V, reset switch SW ?the other end of PB be connected with power supply GND, the pin 18 of chip U1 is connected with one end of electric capacity C4 and one end of crystal oscillator Y1 respectively, the pin 19 of chip U1 is connected with one end of electric capacity C2 and the other end of crystal oscillator Y1 respectively, the other end of electric capacity C4 is all connected with power supply GND with the other end of electric capacity C2, the pin 9 of chip U1 is connected with one end of electric capacity C5 and one end of resistance R19 respectively, the other end of electric capacity C5 is connected with power supply+5V, the other end of resistance R19 is connected with power supply GND, the pin 20 of chip U1 is connected with power supply GND, the pin 35 of chip U1, pin 36, pin 37, pin 38, pin 39 is all connected with one end of pull-up resistor RP1, the other end of pull-up resistor RP1 is connected with power supply+5V, the pin 40 of chip U1 is connected with power supply+5V, input P20, P21, P22, P23 of output P20, P21, P22, P23 of chip U1 and input P24, P25, P26, P27 and detection module and output P24, P25, P26, P27 are corresponding is connected, the output P04 of chip U1 is connected with the input P04 of a relay group, output P00, P01, P02, P03 of chip U1 are corresponding with input P00, P01, P02, P03 of reparation module to be connected, and output P11, P13, P14 of chip U1 are corresponding with input P11, P13, P14 of short-circuit alarming lamp module to be connected.
In technique scheme, a described relay group comprises relay K 4, relay K 5, the pin 8 of relay K 4 is connected with the negative pole of diode D6 and power supply+5V respectively, the pin 1 of relay K 4 is connected with the positive pole of diode D6 and one end of resistance R31 respectively, the pin 8 of relay K 5 is connected with the negative pole of diode D7 and power supply+5V respectively, the pin 1 of relay K 5 is connected with the positive pole of diode D7 and one end of resistance R31 respectively, the other end of resistance R31 is connected with the collector electrode of triode Q11 and one end of electric capacity C7 respectively, the other end of electric capacity C7 is connected with the emitter of triode Q11 and power supply GND respectively, the emitter of triode Q11 is connected with power supply GND, the base stage of triode Q11 is connected with one end of resistance R32, two directions' inputing/output POINT1 ~ the POINT4 of a relay group is corresponding with the two directions' inputing/output POINT1 ~ POINT4 of socket and headset to be connected, output TEMP1 ~ the TEMP4 of a relay group is corresponding with the input TEMP1 ~ TEMP4 of detection module to be connected, and the input FIRE1 ~ FIRE4 of a relay group is corresponding with the output FIRE1 ~ FIRE4 repairing module to be connected.
In technique scheme, described detection module comprises optocoupler U3, optocoupler U5, optocoupler U8, optocoupler U9, the positive pole of optocoupler U3 output is connected with power supply+5V, the negative pole of optocoupler U3 output is connected with power supply GND by resistance R9, the negative pole of optocoupler U3 input is connected with power supply GND, the positive pole of optocoupler U3 input is connected with the emitter of triode Q1 and one end of resistance R7 respectively by resistance R6, the emitter of triode Q1 is connected with power supply GND by resistance R7, the collector electrode of triode Q1 is connected with power supply+5V, the base stage of triode Q1 is connected with one end of resistance R3, the positive pole of optocoupler U5 output is connected with power supply+5V, the negative pole of optocoupler U5 output is connected with power supply GND by resistance R18, the negative pole of optocoupler U5 input is connected with power supply GND, the positive pole of optocoupler U5 input is connected with the emitter of triode Q3 and one end of resistance R16 respectively by resistance R15, the emitter of triode Q3 is connected with power supply GND by resistance R16, the collector electrode of triode Q5 is connected with power supply+5V, the base stage of triode Q5 is connected with one end of resistance R13, the positive pole of optocoupler U8 output is connected with power supply+5V, the negative pole of optocoupler U8 output is connected with power supply GND by resistance R26, the negative pole of optocoupler U8 input is connected with power supply GND, the positive pole of optocoupler U8 input is connected with the emitter of triode Q6 and one end of resistance R25 respectively by resistance R24, the emitter of triode Q6 is connected with power supply GND by resistance R25, the collector electrode of triode Q6 is connected with power supply+5V, the base stage of triode Q6 is connected with one end of resistance R23, the positive pole of optocoupler U9 output is connected with power supply+5V, the negative pole of optocoupler U9 output is connected with power supply GND by resistance R30, the negative pole of optocoupler U9 input is connected with power supply GND, the positive pole of optocoupler U9 input is connected with the emitter of triode Q8 and one end of resistance R29 respectively by resistance R28, the emitter of triode Q8 is connected with power supply GND by resistance R29, the collector electrode of triode Q8 is connected with power supply+5V, the base stage of triode Q8 is connected with one end of resistance R27.
In technique scheme, described reparation module comprises relay K 1, relay K 2, relay K 3, relay K 6, the pin 5 of relay K 1 is connected with the negative pole of power supply+5V and diode D1 respectively, the pin 1 of relay K 1 is connected with the positive pole of diode D1 and one end of resistance R4 respectively, the other end of resistance R4 is connected with one end of electric capacity C1 and the collector electrode of triode Q2 respectively, the other end of electric capacity C1 is connected with the emitter of power supply GND and triode Q2 respectively, the emitter of triode Q2 is connected with power supply GND, the base stage of triode Q2 is connected with one end of resistance R1, the pin 2 of relay K 1 and power supply GND ?24 to be connected, the pin 3 of relay K 1 is connected with power supply+24V, the pin 5 of relay K 2 is connected with the negative pole of power supply+5V and diode D4 respectively, the pin 1 of relay K 2 is connected with the positive pole of diode D4 and one end of resistance R14 respectively, the other end of resistance R14 is connected with one end of electric capacity C3 and the collector electrode of triode Q4 respectively, the other end of electric capacity C3 is connected with the emitter of power supply GND and triode Q4 respectively, the emitter of triode Q4 is connected with power supply GND, the base stage of triode Q4 is connected with one end of resistance R11, the pin 2 of relay K 2 and power supply GND ?24 to be connected, the pin 3 of relay K 2 is connected with power supply+24V, the pin 5 of relay K 3 is connected with the negative pole of power supply+5V and diode D5 respectively, the pin 1 of relay K 3 is connected with the positive pole of diode D5 and one end of resistance R22 respectively, the other end of resistance R22 is connected with one end of electric capacity C6 and the collector electrode of triode Q7 respectively, the other end of electric capacity C6 is connected with the emitter of power supply GND and triode Q7 respectively, the emitter of triode Q7 is connected with power supply GND, the base stage of triode Q7 is connected with one end of resistance R20, the pin 2 of relay K 3 and power supply GND ?24 to be connected, the pin 3 of relay K 3 is connected with power supply+24V, the pin 5 of relay K 6 is connected with the negative pole of power supply+5V and diode D8 respectively, the pin 1 of relay K 6 is connected with the positive pole of diode D8 and one end of resistance R34 respectively, the other end of resistance R34 is connected with one end of electric capacity C8 and the collector electrode of triode Q9 respectively, the other end of electric capacity C8 is connected with the emitter of power supply GND and triode Q9 respectively, the emitter of triode Q9 is connected with power supply GND, the base stage of triode Q9 is connected with one end of resistance R33, the pin 2 of relay K 6 and power supply GND ?24 to be connected, the pin 3 of relay K 6 is connected with power supply+24V.
In technique scheme, described short-circuit alarming lamp module comprises buzzer, light-emitting diode D2, light-emitting diode D3; The positive pole of buzzer is connected with power supply+5V, the negative pole of buzzer is connected with the collector electrode of triode Q5, the base stage of triode Q5 is connected with one end of resistance R17, the emitter of triode Q5 is connected with power supply GND, the positive pole of light-emitting diode D2 is connected with power supply+5V by resistance R8, and the positive pole of light-emitting diode D3 is connected with power supply+5V by resistance R10.
The detection utilizing the automatic inspection and repair device of earphone wire short circuit of the present invention to carry out and/or restorative procedure, it is characterized in that: during control single chip computer minimum system microcontroller start detection module, four branch roads of the mode Test earphone plug wire of poll are adopted whether to have conducting phenomenon, if had, then represent that corresponding branch road there occurs short circuit, then exit trace routine immediately, and this branch road startup repair procedure is repaired.
In technique scheme, concrete steps are as follows:
(1) external power supply connected by instrument, program initialization, and indicator light display is green, represents that instrument is opened successfully;
(2) in earphone contact pin plugged earphone female seat, after pressing the button switch, single-chip microcomputer starts to perform detection: first single-chip microcomputer P2 mouth sends 4 ports that level signal scans a relay group, if be short-circuited between certain two-stage, then corresponding level signal is low; Single-chip microcomputer P2 mouth judges according to the level signal received the situation that is short-circuited between which two level again; If detect, level signal does not change, and illustrates that earphone wire is not short-circuited, and indicator light continues to give a green light, and earphone contact pin can be extracted, and waits for the detection of next product; If detect, level signal changes, then green light goes out, and red light lights;
(3) after detecting and being short-circuited, single-chip microcomputer P0 mouth controls the switch adhesive of a relay group, switch to and repair module and be connected and enter reparation link: after a relay group is connected with reparation module, single-chip microcomputer detects short-circuit conditions according in step (2), open and repair corresponding relay in module, make it to connect the large voltage of 24V, between the two-stage be short-circuited like this, can big current be passed through; Single-chip microcomputer keeps connecting large voltage, to prevent the faults such as the excessive equipment caused of electric current burns out by setting turn-on time; After setting turn-on time, Single-chip Controlling repairs the release of module repeat circuit switch, disconnects 24V voltage; Then control the release of a relay group switch, switch back to and be connected with single-chip microcomputer P2 mouth;
(4) detect after repairing: single-chip microcomputer P2 mouth sends detection signal again, judges the short-circuit conditions between contact pin level equally according to level signal; If do not have short circuit to occur, then show short circuit reparation success, red light goes out, green light; If still there is short circuit, then red light continues bright, and buzzer sounds simultaneously, and prompting short circuit reparation has been failed;
(5) after again detecting, earphone contact pin is extracted, Program reset, display green light; Continue to detect next product and/or repair.
In technique scheme, it is specific as follows that step (2) control single chip computer P2 mouth sends the process that signal carries out detecting; P2 mouth first sends level signal 0x0e, if the signal received is not 0x1e, then illustrate and be short-circuited between contact pin 1 grade and other levels, namely first group of situation, is marked with flag=1, and green light goes out simultaneously, when red; Then, P2 mouth sends level signal 0x0d, if the signal received is not 0x2d, then illustrate and be short-circuited between contact pin 2 grades and other levels, namely second group of situation, is marked with flag=2, and green light goes out simultaneously, when red; Last P2 mouth sends level signal 0x0b, if the signal received is not 0x4b, then illustrate and be short-circuited between contact pin 3 grades and other levels, namely the 3rd group of situation, is marked with flag=3, and green light goes out simultaneously, when red; If these the three groups of signals sent all do not detect short circuit, then marked with flag=0, green light continues bright, and earphone wire is judged as non-defective unit, after being extracted by contact pin, proceeds next contact pin and detects.
In technique scheme, after step (3) enters and repairs link: if the short circuit in first group of situation detected, then single-chip microcomputer P0.4 pin controls the action of a relay group, be connected with reparation module repeat circuit group, then P0.0 pin controls to repair module repeat circuit K1 action, to connect 24V voltage fusing short-circuit conductors; Reparation moment after setting completes turn-on time, first control the switch release of repairing module repeat circuit K1, disconnects with 24V Switching Power Supply, and then the switch controlling a relay group discharges and is connected with single-chip microcomputer P2 mouth, carries out follow-up detection; For the short circuit in second group of situation, then single-chip microcomputer P0.1 pin control K2 action; For the short circuit in the 3rd group of situation, then P0.2 pin control K3 action;
In technique scheme, described setting turn-on time is 20ms.
The present invention observes discovery by experiment, for the short circuit that thin copper wire causes, can be fused by the electric currents of several amperes.Thus, the present invention realizes short circuit reparation by the method connecing large voltage, mainly utilizes the folding of Single-chip Controlling relay to coordinate short-circuit detecting and repair process.Key technology of the present invention is isolated different voltage.The supply power voltage of single-chip microcomputer is 5V DC power supply; The coil voltage of relay is 5V, and coil current is 80mA, and specified pick-up current is 12A, switching voltage 440VAC/300VDC (minimum value), and the operating time is 15ms, and release time is 5ms; The Switching Power Supply of repairing is 500W direct current 24V.These two groups of power supplys all have corresponding switch to control.In order to prevent single-chip microcomputer or other components and parts from being damaged by 24V voltage, need the cabling in optimal design PCB, the both positive and negative polarity of the both positive and negative polarity of 5V DC power supply and 24V Switching Power Supply is separated completely.Single-chip microcomputer also has corresponding setting before working procedure, and after namely earphone contact pin is inserted, need press the button, single-chip microcomputer just starts executive program, and after contact pin is extracted, program is jumped out automatically, does not rerun.For detection, the P2 mouth of single-chip microcomputer for detect not at the same level between short circuit, between single-chip microcomputer 4 P2 mouths and earphone contact pin 4 levels, add photoelectrical coupler.In addition, in reparation link, must the time parameter of the switch adhesive of choose reasonable two group relay and release, if select improper meeting to cause 24V voltage and single-chip microcomputer P2 mouth to connect, cause the pin of single-chip microcomputer to burn out instantaneously.Concrete operations are the switch adhesive first controlling to repair module repeat circuit, disconnect, and then control the switch adhesive of a relay with the pin of single-chip microcomputer, connect 24V Switching Power Supply.After reparation completes instantaneously, first control the switch release of repairing module repeat circuit, disconnect with 24V Switching Power Supply, and then the switch release controlling a relay is connected with single-chip microcomputer P2 mouth, carries out secondary detection.
Compared with existing production status, the invention has the beneficial effects as follows:
1, do not need the wire rod be short-circuited to cut off, scrapping of earphone wire material can be reduced;
2, simple to operate, reduce labour intensity;
3, low voltage operating, safe and reliable;
4, automaticity is high, distinguishable go out to occur without short circuit earphone wire, short circuit but recoverable earphone wire and short circuit but this three classes situation of the earphone wire that can not repair.
Accompanying drawing explanation
Fig. 1 is the hardware elementary diagram of the automatic inspection and repair device of earphone wire short circuit of the present invention;
Fig. 2 is the circuit diagram of single-chip minimum system in the automatic inspection and repair device of earphone wire short circuit of the present invention;
Fig. 3 is the circuit diagram of a relay group in the automatic inspection and repair device of earphone wire short circuit of the present invention;
Fig. 4 is the circuit diagram of detection module in the automatic inspection and repair device of earphone wire short circuit of the present invention;
Fig. 5 is the circuit diagram repairing module in the automatic inspection and repair device of earphone wire short circuit of the present invention;
Fig. 6 is the circuit diagram of short circuit alarm lamp in the automatic inspection and repair device of earphone wire short circuit of the present invention;
Fig. 7 is the structural representation of an earphone wire short circuit of the invention process automatic inspection and repair device embodiment;
Fig. 8 is the automatic inspection and repair method flow diagram of earphone wire short circuit of the invention process.
Embodiment
Realize being described further to technology of the present invention below in conjunction with accompanying drawing.
According to a specific embodiment of the automatic inspection and repair device of earphone wire short circuit of the invention process as figure 1 ?shown in 8.
In the present embodiment: earphone wire short circuit of the present invention automatic inspection and repair device hardware elementary diagram as shown in Figure 1, comprises 24V Switching Power Supply 1,5V power transfer module 3, socket and headset 9, relay group 8, repairs module 6, detection module 7, MCU51 single-chip minimum system 5 and short-circuit alarming lamp 4 (be set to repair successfully, failed warning light).24V Switching Power Supply 1 is connected with 220V alternating current 2, the output of 24V Switching Power Supply 1 respectively with a relay group 8, repair module 6 and be connected, 5V power module 3 is connected with 220V alternating current 2, the output of 5V power module 3 respectively with MCU51 single-chip minimum system 5, detection module 7, repair module 6, relay group 8, short-circuit alarming lamp (repair successfully, failed warning light) 4 is connected.
The circuit diagram of single-chip minimum system as shown in Figure 2, wherein, socket and headset 9 is for drawing 4 wires, be connected with 4 normally closed ports of a relay group (namely 28 pins two often open two normally closed relays) 8, relay group 8 respectively with detection module 7, repair module 6, single-chip minimum system 5 is connected, MCU51 single-chip minimum system 5 respectively with detection module 7, repair module 6, short-circuit alarming lamp (repair successfully, failed warning light) 4 is connected.Single-chip minimum system 5 comprises MCU51 chip U1, the pin 1 of chip U1 respectively with one end of resistance R5 and reset switch SW ?one end of PB be connected, the other end of resistance R5 is connected with power supply+5V, reset switch SW ?the other end of PB be connected with power supply GND, the pin 18 of chip U1 is connected with one end of electric capacity C4 and one end of crystal oscillator Y1 respectively, the pin 19 of chip U1 is connected with one end of electric capacity C2 and the other end of crystal oscillator Y1 respectively, the other end of electric capacity C4 is all connected with power supply GND with the other end of electric capacity C2, the pin 9 of chip U1 is connected with one end of electric capacity C5 and one end of resistance R19 respectively, the other end of electric capacity C5 is connected with power supply+5V, the other end of resistance R19 is connected with power supply GND, the pin 20 of chip U1 is connected with power supply GND, the pin 35 of chip U1, pin 36, pin 37, pin 38, pin 39 is all connected with one end of pull-up resistor RP1, the other end of pull-up resistor RP1 is connected with power supply+5V, the pin 40 of chip U1 is connected with power supply+5V.
Input P20, P21, P22, P23 of output P20, P21, P22, P23 of chip U1 and input P24, P25, P26, P27 and detection module 7 and output P24, P25, P26, P27 are corresponding is connected, the output P04 of chip U1 is connected with the input P04 of a relay group 8, output P00, P01, P02, P03 of chip U1 are corresponding with input P00, P01, P02, P03 of reparation module 6 to be connected, and output P11, P13, P14 of chip U1 are corresponding with input P11, P13, P14 of short-circuit alarming lamp 4 to be connected.
As shown in Figure 3, a relay group 8 comprises relay K 4, relay K 5 to a relay group, the pin 8 of relay K 4 is connected with the negative pole of diode D6 and power supply+5V respectively, the pin 1 of relay K 4 is connected with the positive pole of diode D6 and one end of resistance R31 respectively, the pin 8 of relay K 5 is connected with the negative pole of diode D7 and power supply+5V respectively, the pin 1 of relay K 5 is connected with the positive pole of diode D7 and one end of resistance R31 respectively, the other end of resistance R31 is connected with the collector electrode of triode Q11 and one end of electric capacity C7 respectively, the other end of electric capacity C7 is connected with the emitter of triode Q11 and power supply GND respectively, the emitter of triode Q11 is connected with power supply GND, the base stage of triode Q11 is connected with one end of resistance R32, the input P04 of a relay group 8 is connected with the output P04 of single-chip minimum system 5, two directions' inputing/output POINT1 ~ the POINT4 of a relay group 8 is corresponding with the two directions' inputing/output POINT1 ~ POINT4 of socket and headset 9 to be connected, output TEMP1 ~ the TEMP4 of a relay group 8 is corresponding with the input TEMP1 ~ TEMP4 of detection module 7 to be connected, and the input FIRE1 ~ FIRE4 of a relay group 8 is corresponding with the output FIRE1 ~ FIRE4 repairing module 6 to be connected.
As shown in Figure 4, detection module 7 comprises optocoupler U3, optocoupler U5, optocoupler U8, optocoupler U9 to detection module, the positive pole of optocoupler U3 output is connected with power supply+5V, the negative pole of optocoupler U3 output is connected with power supply GND by resistance R9, the negative pole of optocoupler U3 input is connected with power supply GND, the positive pole of optocoupler U3 input is connected with the emitter of triode Q1 and one end of resistance R7 respectively by resistance R6, the emitter of triode Q1 is connected with power supply GND by resistance R7, the collector electrode of triode Q1 is connected with power supply+5V, the base stage of triode Q1 is connected with one end of resistance R3, the positive pole of optocoupler U5 output is connected with power supply+5V, the negative pole of optocoupler U5 output is connected with power supply GND by resistance R18, the negative pole of optocoupler U5 input is connected with power supply GND, the positive pole of optocoupler U5 input is connected with the emitter of triode Q3 and one end of resistance R16 respectively by resistance R15, the emitter of triode Q3 is connected with power supply GND by resistance R16, the collector electrode of triode Q5 is connected with power supply+5V, the base stage of triode Q5 is connected with one end of resistance R13, the positive pole of optocoupler U8 output is connected with power supply+5V, the negative pole of optocoupler U8 output is connected with power supply GND by resistance R26, the negative pole of optocoupler U8 input is connected with power supply GND, the positive pole of optocoupler U8 input is connected with the emitter of triode Q6 and one end of resistance R25 respectively by resistance R24, the emitter of triode Q6 is connected with power supply GND by resistance R25, the collector electrode of triode Q6 is connected with power supply+5V, the base stage of triode Q6 is connected with one end of resistance R23, the positive pole of optocoupler U9 output is connected with power supply+5V, the negative pole of optocoupler U9 output is connected with power supply GND by resistance R30, the negative pole of optocoupler U9 input is connected with power supply GND, the positive pole of optocoupler U9 input is connected with the emitter of triode Q8 and one end of resistance R29 respectively by resistance R28, the emitter of triode Q8 is connected with power supply GND by resistance R29, the collector electrode of triode Q8 is connected with power supply+5V, the base stage of triode Q8 is connected with one end of resistance R27, output P20 ~ the P23 of the input P20 ~ P23 of detection module 7 and output P24 ~ P27 and single-chip minimum system 5 and input P24 ~ P27 is corresponding is connected, the input TEMP1 ~ TEMP4 of detection module 7 is corresponding with the output TEMP1 ~ TEMP4 of a relay group 8 to be connected.
Repair module as shown in Figure 5, repair module 6 and comprise relay K 1, relay K 2, relay K 3, relay K 6, the pin 5 of relay K 1 is connected with the negative pole of power supply+5V and diode D1 respectively, the pin 1 of relay K 1 is connected with the positive pole of diode D1 and one end of resistance R4 respectively, the other end of resistance R4 is connected with one end of electric capacity C1 and the collector electrode of triode Q2 respectively, the other end of electric capacity C1 is connected with the emitter of power supply GND and triode Q2 respectively, the emitter of triode Q2 is connected with power supply GND, the base stage of triode Q2 is connected with one end of resistance R1, the pin 2 of relay K 1 and power supply GND ?24 to be connected, the pin 3 of relay K 1 is connected with power supply+24V, the pin 5 of relay K 2 is connected with the negative pole of power supply+5V and diode D4 respectively, the pin 1 of relay K 2 is connected with the positive pole of diode D4 and one end of resistance R14 respectively, the other end of resistance R14 is connected with one end of electric capacity C3 and the collector electrode of triode Q4 respectively, the other end of electric capacity C3 is connected with the emitter of power supply GND and triode Q4 respectively, the emitter of triode Q4 is connected with power supply GND, the base stage of triode Q4 is connected with one end of resistance R11, the pin 2 of relay K 2 and power supply GND ?24 to be connected, the pin 3 of relay K 2 is connected with power supply+24V, the pin 5 of relay K 3 is connected with the negative pole of power supply+5V and diode D5 respectively, the pin 1 of relay K 3 is connected with the positive pole of diode D5 and one end of resistance R22 respectively, the other end of resistance R22 is connected with one end of electric capacity C6 and the collector electrode of triode Q7 respectively, the other end of electric capacity C6 is connected with the emitter of power supply GND and triode Q7 respectively, the emitter of triode Q7 is connected with power supply GND, the base stage of triode Q7 is connected with one end of resistance R20, the pin 2 of relay K 3 and power supply GND ?24 to be connected, the pin 3 of relay K 3 is connected with power supply+24V, the pin 5 of relay K 6 is connected with the negative pole of power supply+5V and diode D8 respectively, the pin 1 of relay K 6 is connected with the positive pole of diode D8 and one end of resistance R34 respectively, the other end of resistance R34 is connected with one end of electric capacity C8 and the collector electrode of triode Q9 respectively, the other end of electric capacity C8 is connected with the emitter of power supply GND and triode Q9 respectively, the emitter of triode Q9 is connected with power supply GND, the base stage of triode Q9 is connected with one end of resistance R33, the pin 2 of relay K 6 and power supply GND ?24 to be connected, the pin 3 of relay K 6 is connected with power supply+24V, input P00 ~ the P03 repairing module 6 is corresponding with the output P00 ~ P03 of single-chip minimum system 5 to be connected, and the input FIRE1 ~ FIRE4 repairing module 6 is corresponding with the output FIRE1 ~ FIRE4 of a relay group 8 to be connected.
As shown in Figure 6, short-circuit alarming lamp module 4 comprises buzzer 17, light-emitting diode D2, light-emitting diode D3 to short-circuit alarming lamp module; The positive pole of buzzer 17 is connected with power supply+5V, the negative pole of buzzer 17 is connected with the collector electrode of triode Q5, the base stage of triode Q5 is connected with one end of resistance R17, the emitter of triode Q5 is connected with power supply GND, the positive pole of light-emitting diode D2 is connected with power supply+5V by resistance R8, and the positive pole of light-emitting diode D3 is connected with power supply+5V by resistance R10; Input P11, P13, P14 of short-circuit alarming lamp 4 are corresponding with output P11, P13, P14 of single-chip minimum system 5 to be connected.
Fig. 7 is the structural representation of an earphone wire short circuit of the invention process automatic inspection and repair device embodiment.The casing 18 of earphone wire short circuit automatic inspection and repair device is arranged each jack, opening and functional device (indicator light 11 (red light and green light), earphone jack 12 (only for earphone contact pin by rear plugged earphone female seat 9), push-button switch 13,5v mains switch 14, ventilating opening 15, external 220v power-line plug 16, buzzer 17, quiet fan 19).Casing 18 internal fixtion is equipped with each hardware circuit module.Push-button switch 13 is for the execution of control single chip computer U1 program.
As Fig. 8, the automatic inspection and repair device of earphone wire short circuit of the present invention, its concrete inspection and repair method is as follows:
Step 1: first switched on power by external 220V power-line plug 16, indicator light 11 green light;
Step 2: then insert earphone contact pin to be detected (4 grades of contact pins) to earphone jack 12, the socket and headset that earphone jack 12 connects, for drawing 4 wires, is connected with 4 normally closed ports of a relay group respectively; Press the button switch 13, send signal for control single chip computer P2 mouth; P2 mouth first sends level signal 0x0e, if the signal received is not 0x1e, then illustrate and be short-circuited between contact pin 1 grade and other levels, namely first group of situation, is marked with flag=1, and green light goes out simultaneously, when red; Then, P2 mouth sends level signal 0x0d, if the signal received is not 0x2d, then illustrate and be short-circuited between contact pin 2 grades and other levels, namely second group of situation, is marked with flag=2, and green light goes out simultaneously, when red; Last P2 mouth sends level signal 0x0b, if the signal received is not 0x4b, then illustrate and be short-circuited between contact pin 3 grades and other levels, namely the 3rd group of situation, is marked with flag=3, and green light goes out simultaneously, when red.If these the three groups of signals sent all do not detect short circuit, then marked with flag=0, green light continues bright, and earphone wire is judged as non-defective unit, after being extracted by contact pin, proceeds next contact pin and detects;
Step 3: when the short-circuit conditions detected in step 2, enter reparation link: if the short circuit in first group of situation detected, then single-chip microcomputer P0.4 pin controls the action of a relay group, be connected with reparation module repeat circuit group, then P0.0 pin controls to repair module repeat circuit K1 action, to connect 24V voltage fusing short-circuit conductors, connect duration for setting duration; Reparation moment after setting duration completes, first control the switch release of repairing module repeat circuit K1, disconnect with 24V Switching Power Supply, and then the switch release controlling a relay group is connected with single-chip microcomputer P2 mouth, carries out follow-up detection;
For the short circuit in second group of situation, then single-chip microcomputer P0.1 pin control K2 action; For the short circuit in the 3rd group of situation, then P0.2 pin control K3 action;
Step 4: detect again after reparation, connects in step 3 (being preferably set to 20ms) after the setting-up time of 24V voltage fusing short-circuit conductors, and single-chip microcomputer P0 mouth controls a relay group, repair module repeat circuit group switch is switched to normally closed point; Afterwards, with step 2, single-chip microcomputer again sends level signal and detects four of contact pin levels; If do not find short circuit, then illustrate that short-circuiting percentage repairs, red light goes out, green light; If still have short circuit, then no longer repair, red light keeps bright, and simultaneously buzzer sends sound and pointed out (repair module to start once at most, even if repair unsuccessful, also can not again repair same short circuit wire rod).
Step 5: after again detecting, earphone contact pin is extracted, continues to detect next product and/or repair.
In order to prevent single-chip microcomputer or other components and parts from being damaged by 24V voltage, need the cabling in optimal design PCB, the both positive and negative polarity of the both positive and negative polarity of 5V DC power supply and 24V Switching Power Supply is separated completely.Single-chip microcomputer also has corresponding setting before working procedure, and after namely earphone contact pin is inserted, need press the button, single-chip microcomputer just starts executive program, and after contact pin is extracted, program is jumped out automatically, does not rerun.For detection, the P2 mouth of single-chip microcomputer for detect not at the same level between short circuit, between single-chip microcomputer 4 P2 mouths and earphone contact pin 4 levels, add photoelectrical coupler.In addition, in reparation link, must the time parameter of the switch adhesive of choose reasonable two group relay and release, if select improper meeting to cause 24V voltage and single-chip microcomputer P2 mouth to connect, cause the pin of single-chip microcomputer to burn out instantaneously.Concrete operations are the switch adhesive first controlling to repair module repeat circuit, disconnect, and then control the switch adhesive of a relay with the pin of single-chip microcomputer, connect 24V Switching Power Supply.After reparation moment (setting-up time is 20ms) completes, first control the switch release of repairing module repeat circuit, disconnect with 24V Switching Power Supply, and then the switch release controlling a relay is connected with single-chip microcomputer P2 mouth, carries out secondary detection.
The mode that the present invention adopts Single-chip Controlling relay to connect large voltage repairs short circuit wire rod, and earphone production line has very large purposes.The earphone wire that every day produces, because thin copper wire overlaps the short circuit that causes about 10%, scrappage is very high.Use this instrument, short circuit earphone wire can be detected well, and by short circuit branch reparation, repair rate is high, decreases and scraps.For employee, reduce employee's fatigue strength, improve production efficiency, and simple to operate, fail safe is good.
Claims (9)
1. the automatic inspection and repair device of earphone wire short circuit, in outer case, hardware circuit is set, it is characterized in that: described hardware circuit mainly comprise 24V Switching Power Supply, 5V power transfer module, for hold earphone contact pin to be detected socket and headset, for detecting earphone with the detection module repaired and repairing a relay group being connected with socket and headset of module and single-chip minimum system, wherein, 24V Switching Power Supply is connected with external AC, the output of 24V Switching Power Supply respectively with a relay group, repair model calling; Relay group respectively with detection module, repair module, single-chip minimum system is connected, single-chip minimum system also connects short-circuit alarming lamp module; 5V power transfer module is connected with alternating current, and the output end power+5V of 5V power transfer module is connected with single-chip minimum system, detection module, reparation module, relay group, a short-circuit alarming lamp module respectively; A described relay group is often opened two normally closed relays by two 8 pins two and is formed; Socket and headset is for drawing the 4 piece wires corresponding with four of earphone plug wire branch roads, and these 4 wires are connected with 4 normally closed ports of a relay group.
2. the automatic inspection and repair device of earphone wire short circuit according to claim 1, is characterized in that: described outer case is provided with: with the earphone jack that socket and headset matches, with the corresponding red light of short-circuit alarming lamp module and green light, corresponding and for the push-button switch of control single chip computer and the circumscripted power line plug for introducing alternating current with single-chip minimum system.
3. the automatic inspection and repair device of earphone wire short circuit according to claim 1, is characterized in that: described single-chip minimum system comprises singlechip chip U1, the pin 1 of chip U1 is connected with one end of resistance R5 and one end of reset switch SW-PB respectively, the other end of resistance R5 is connected with power supply+5V, the other end of reset switch SW-PB is connected with power supply GND, the pin 18 of chip U1 is connected with one end of electric capacity C4 and one end of crystal oscillator Y1 respectively, the pin 19 of chip U1 is connected with one end of electric capacity C2 and the other end of crystal oscillator Y1 respectively, the other end of electric capacity C4 is all connected with power supply GND with the other end of electric capacity C2, the pin 9 of chip U1 is connected with one end of electric capacity C5 and one end of resistance R19 respectively, the other end of electric capacity C5 is connected with power supply+5V, the other end of resistance R19 is connected with power supply GND, the pin 20 of chip U1 is connected with power supply GND, the pin 35 of chip U1, pin 36, pin 37, pin 38, pin 39 is all connected with one end of pull-up resistor RP1, the other end of pull-up resistor RP1 is connected with power supply+5V, the pin 40 of chip U1 is connected with power supply+5V, input P20, P21, P22, P23 of output P20, P21, P22, P23 of chip U1 and input P24, P25, P26, P27 and detection module and output P24, P25, P26, P27 are corresponding is connected, the output P04 of chip U1 is connected with the input P04 of a relay group, output P00, P01, P02, P03 of chip U1 are corresponding with input P00, P01, P02, P03 of reparation module to be connected, and output P11, P13, P14 of chip U1 are corresponding with input P11, P13, P14 of short-circuit alarming lamp module to be connected,
A described relay group comprises relay K 4, relay K 5, the pin 8 of relay K 4 is connected with the negative pole of diode D6 and power supply+5V respectively, the pin 1 of relay K 4 is connected with the positive pole of diode D6 and one end of resistance R31 respectively, the pin 8 of relay K 5 is connected with the negative pole of diode D7 and power supply+5V respectively, the pin 1 of relay K 5 is connected with the positive pole of diode D7 and one end of resistance R31 respectively, the other end of resistance R31 is connected with the collector electrode of triode Q11 and one end of electric capacity C7 respectively, the other end of electric capacity C7 is connected with the emitter of triode Q11 and power supply GND respectively, the emitter of triode Q11 is connected with power supply GND, the base stage of triode Q11 is connected with one end of resistance R32, two directions' inputing/output POINT1 ~ the POINT4 of a relay group is corresponding with the two directions' inputing/output POINT1 ~ POINT4 of socket and headset to be connected, output TEMP1 ~ the TEMP4 of a relay group is corresponding with the input TEMP1 ~ TEMP4 of detection module to be connected, and the input FIRE1 ~ FIRE4 of a relay group is corresponding with the output FIRE1 ~ FIRE4 repairing module to be connected,
Described detection module comprises optocoupler U3, optocoupler U5, optocoupler U8, optocoupler U9, the positive pole of optocoupler U3 output is connected with power supply+5V, the negative pole of optocoupler U3 output is connected with power supply GND by resistance R9, the negative pole of optocoupler U3 input is connected with power supply GND, the positive pole of optocoupler U3 input is connected with the emitter of triode Q1 and one end of resistance R7 respectively by resistance R6, the emitter of triode Q1 is connected with power supply GND by resistance R7, the collector electrode of triode Q1 is connected with power supply+5V, the base stage of triode Q1 is connected with one end of resistance R3, the positive pole of optocoupler U5 output is connected with power supply+5V, the negative pole of optocoupler U5 output is connected with power supply GND by resistance R18, the negative pole of optocoupler U5 input is connected with power supply GND, the positive pole of optocoupler U5 input is connected with the emitter of triode Q3 and one end of resistance R16 respectively by resistance R15, the emitter of triode Q3 is connected with power supply GND by resistance R16, the collector electrode of triode Q5 is connected with power supply+5V, the base stage of triode Q5 is connected with one end of resistance R13, the positive pole of optocoupler U8 output is connected with power supply+5V, the negative pole of optocoupler U8 output is connected with power supply GND by resistance R26, the negative pole of optocoupler U8 input is connected with power supply GND, the positive pole of optocoupler U8 input is connected with the emitter of triode Q6 and one end of resistance R25 respectively by resistance R24, the emitter of triode Q6 is connected with power supply GND by resistance R25, the collector electrode of triode Q6 is connected with power supply+5V, the base stage of triode Q6 is connected with one end of resistance R23, the positive pole of optocoupler U9 output is connected with power supply+5V, the negative pole of optocoupler U9 output is connected with power supply GND by resistance R30, the negative pole of optocoupler U9 input is connected with power supply GND, the positive pole of optocoupler U9 input is connected with the emitter of triode Q8 and one end of resistance R29 respectively by resistance R28, the emitter of triode Q8 is connected with power supply GND by resistance R29, the collector electrode of triode Q8 is connected with power supply+5V, the base stage of triode Q8 is connected with one end of resistance R27,
Described reparation module comprises relay K 1, relay K 2, relay K 3, relay K 6, the pin 5 of relay K 1 is connected with the negative pole of power supply+5V and diode D1 respectively, the pin 1 of relay K 1 is connected with the positive pole of diode D1 and one end of resistance R4 respectively, the other end of resistance R4 is connected with one end of electric capacity C1 and the collector electrode of triode Q2 respectively, the other end of electric capacity C1 is connected with the emitter of power supply GND and triode Q2 respectively, the emitter of triode Q2 is connected with power supply GND, the base stage of triode Q2 is connected with one end of resistance R1, the pin 2 of relay K 1 is connected with power supply GND-24, the pin 3 of relay K 1 is connected with power supply+24V, the pin 5 of relay K 2 is connected with the negative pole of power supply+5V and diode D4 respectively, the pin 1 of relay K 2 is connected with the positive pole of diode D4 and one end of resistance R14 respectively, the other end of resistance R14 is connected with one end of electric capacity C3 and the collector electrode of triode Q4 respectively, the other end of electric capacity C3 is connected with the emitter of power supply GND and triode Q4 respectively, the emitter of triode Q4 is connected with power supply GND, the base stage of triode Q4 is connected with one end of resistance R11, the pin 2 of relay K 2 is connected with power supply GND-24, the pin 3 of relay K 2 is connected with power supply+24V, the pin 5 of relay K 3 is connected with the negative pole of power supply+5V and diode D5 respectively, the pin 1 of relay K 3 is connected with the positive pole of diode D5 and one end of resistance R22 respectively, the other end of resistance R22 is connected with one end of electric capacity C6 and the collector electrode of triode Q7 respectively, the other end of electric capacity C6 is connected with the emitter of power supply GND and triode Q7 respectively, the emitter of triode Q7 is connected with power supply GND, the base stage of triode Q7 is connected with one end of resistance R20, the pin 2 of relay K 3 is connected with power supply GND-24, the pin 3 of relay K 3 is connected with power supply+24V, the pin 5 of relay K 6 is connected with the negative pole of power supply+5V and diode D8 respectively, the pin 1 of relay K 6 is connected with the positive pole of diode D8 and one end of resistance R34 respectively, the other end of resistance R34 is connected with one end of electric capacity C8 and the collector electrode of triode Q9 respectively, the other end of electric capacity C8 is connected with the emitter of power supply GND and triode Q9 respectively, the emitter of triode Q9 is connected with power supply GND, the base stage of triode Q9 is connected with one end of resistance R33, the pin 2 of relay K 6 is connected with power supply GND-24, the pin 3 of relay K 6 is connected with power supply+24V.
4. the automatic inspection and repair device of earphone wire short circuit according to claim 1, is characterized in that: described short-circuit alarming lamp module comprises buzzer, light-emitting diode D2, light-emitting diode D3; The positive pole of buzzer is connected with power supply+5V, the negative pole of buzzer is connected with the collector electrode of triode Q5, the base stage of triode Q5 is connected with one end of resistance R17, the emitter of triode Q5 is connected with power supply GND, the positive pole of light-emitting diode D2 is connected with power supply+5V by resistance R8, and the positive pole of light-emitting diode D3 is connected with power supply+5V by resistance R10.
5. utilize the automatic inspection and repair method of earphone wire short circuit that one of claim 2-4 described earphone wire short circuit automatic inspection and repair device carries out, it is characterized in that: during control single chip computer minimum system microcontroller start detection module, four branch roads of the mode Test earphone plug wire of poll are adopted whether to have conducting phenomenon, if had, then represent that corresponding branch road there occurs short circuit, then exit trace routine immediately, and this branch road startup repair procedure is repaired.
6. the automatic inspection and repair method of earphone wire short circuit according to claim 5, is characterized in that: specifically comprise the steps:
(1) external power supply connected by instrument, program initialization, and indicator light display is green, represents that instrument is opened successfully;
(2) in earphone contact pin plugged earphone female seat, after pressing the button switch, single-chip microcomputer starts to perform detection: first single-chip microcomputer P2 mouth sends 4 ports that level signal scans a relay group, if be short-circuited between certain two-stage, then corresponding level signal is low; Single-chip microcomputer P2 mouth judges according to the level signal received the situation that is short-circuited between which two level again; If detect, level signal does not change, and illustrates that earphone wire is not short-circuited, and indicator light continues to give a green light, and earphone contact pin can be extracted, and waits for the detection of next product; If detect, level signal changes, then green light goes out, and red light lights;
(3) after detecting and being short-circuited, single-chip microcomputer P0 mouth controls the switch adhesive of a relay group, switch to and repair module and be connected and enter reparation link: after a relay group is connected with reparation module, single-chip microcomputer detects short-circuit conditions according in step (2), open and repair corresponding relay in module, make it to connect the large voltage of 24V, between the two-stage be short-circuited like this, can big current be passed through; Single-chip microcomputer keeps connecting large voltage, to prevent the faults such as the excessive equipment caused of electric current burns out by setting turn-on time; After setting turn-on time, Single-chip Controlling repairs the release of module repeat circuit switch, disconnects 24V voltage; Then control the release of a relay group switch, switch back to and be connected with single-chip microcomputer P2 mouth;
(4) detect after repairing: single-chip microcomputer P2 mouth sends detection signal again, judges the short-circuit conditions between contact pin level equally according to level signal; If do not have short circuit to occur, then show short circuit reparation success, red light goes out, green light; If still there is short circuit, then red light continues bright, and buzzer sounds simultaneously, and prompting short circuit reparation has been failed;
(5) after again detecting, earphone contact pin is extracted, Program reset, display green light; Continue to detect next product and/or repair.
7. the automatic inspection and repair method of earphone wire short circuit according to claim 6, is characterized in that: it is specific as follows that step (2) control single chip computer P2 mouth sends the process that signal carries out detecting; P2 mouth first sends level signal 0x0e, if the signal received is not 0x1e, then illustrate and be short-circuited between contact pin 1 grade and other levels, namely first group of situation, is marked with flag=1, and green light goes out simultaneously, when red; Then, P2 mouth sends level signal 0x0d, if the signal received is not 0x2d, then illustrate and be short-circuited between contact pin 2 grades and other levels, namely second group of situation, is marked with flag=2, and green light goes out simultaneously, when red; Last P2 mouth sends level signal 0x0b, if the signal received is not 0x4b, then illustrate and be short-circuited between contact pin 3 grades and other levels, namely the 3rd group of situation, is marked with flag=3, and green light goes out simultaneously, when red; If these the three groups of signals sent all do not detect short circuit, then marked with flag=0, green light continues bright, and earphone wire is judged as non-defective unit, after being extracted by contact pin, proceeds next contact pin and detects.
8. the automatic inspection and repair method of the earphone wire short circuit according to claim 6 or 7, it is characterized in that: after step (3) enters and repairs link: if the short circuit in first group of situation detected, then single-chip microcomputer P0.4 pin controls the action of a relay group, be connected with reparation module repeat circuit group, then P0.0 pin controls to repair module repeat circuit K1 action, to connect 24V voltage fusing short-circuit conductors; Reparation moment after setting completes turn-on time, first control the switch release of repairing module repeat circuit K1, disconnects with 24V Switching Power Supply, and then the switch controlling a relay group discharges and is connected with single-chip microcomputer P2 mouth, carries out follow-up detection; For the short circuit in second group of situation, then single-chip microcomputer P0.1 pin control K2 action; For the short circuit in the 3rd group of situation, then P0.2 pin control K3 action.
9. the automatic inspection and repair method of earphone wire short circuit according to claim 6, is characterized in that: described setting turn-on time is 20ms.
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| CN113466738A (en) * | 2021-05-31 | 2021-10-01 | 广东朝阳电子科技股份有限公司 | Short circuit detection circuit |
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