CN203349935U

CN203349935U - AT89C51 single chip microcomputer infrared temperature measuring system

Info

Publication number: CN203349935U
Application number: CN 201320374092
Authority: CN
Inventors: 赵晓东; 华海涛; 邹洪波
Original assignee: Hangzhou Dianzi University
Current assignee: Hangzhou Dianzi University
Priority date: 2013-06-26
Filing date: 2013-06-26
Publication date: 2013-12-18
Anticipated expiration: 2023-06-26

Abstract

The utility model discloses an AT89C51 single chip microcomputer infrared temperature measuring system. According to the existing tempering process, the heating temperature is required to be 205 +/- 5 DEG C, but according to the process, the heating voltage is controlled, and no temperature measuring device and record exist, so requirements of an ISO9000 quality system cannot be satisfied. The AT89C51 single chip microcomputer infrared temperature measuring system of the utility model comprises a power management module, a control module, a signal acquisition module, a programmable interface module, a scanning operation module and a temperature display module. According to the utility model, the acquisition of an external temperature of the signal acquisition module is converted into an analog signal and transmitted to a controller, and then the analog signal is converted into a digital signal through the controller and displayed on a Nixie tube, so that operators can clearly know the temperature of a heated device so as to adjust the temperature to make the process meet requirements better.

Description

AT89C51 single-chip microcomputer infrared temperature measurement system

Technical field

The utility model belongs to the Single Chip Microcomputer (SCM) system field, relates to a kind of temp measuring system, is specifically related to a kind of AT89C51 single-chip microcomputer infrared temperature measurement system.

Background technology

Along with the development that modern industry is produced, the use of mid freqency induction furnace is more and more extensive.Line-frequency induction tempering heating furnace adopts inductive heating principle to be heated.Bearing ring is placed in the inductive coil of enough power stages, under the effect of power frequency alternating magnetic field, the surface of workpiece forms powerful induction current, makes workpiece to heat up rapidly, thereby realizes the tempering of workpiece.The characteristics that the induction heating tempering stove is built design are except the workpiece heating-up temperature, other all technological parameters are all fixed, and heating-up temperature is to be determined by electric current by inductive coil, induction current is determined by induced voltage, control induction coil voltage and just can guarantee the temperature that workpiece reaches, between temperature and voltage, exist corresponding fixed relationship.Yet the temperature of tempering furnace is to carry out Regulation Control by the color of workpiece after the observation tempering.It is 205 ± 5 ℃ that existing tempering process requires heating-up temperature, but this operation is to control heating voltage, without temperature measuring equipment and record, does not meet the ISO9000 Quality System requirement.

Summary of the invention

The utility model, for the deficiencies in the prior art, has proposed a kind of AT89C51 single-chip microcomputer infrared temperature measurement system.

A kind of AT89C51 single-chip microcomputer of the utility model infrared temperature measurement system comprises power management module, control module, signal acquisition module, programmable interface module, scan operation module and temperature display module.

Power management module comprises power management chip IC1, the first anti-reverse diode D1, and the first electrolytic capacitor filter C1, the second electrolytic capacitor filter C2, the 3rd filter capacitor C3, the 4th filter capacitor C4, power management chip IC1 model is LM7508.

The anode of the first anti-reverse diode D1 connects given 12V power supply, the positive pole of the negative electrode of the first anti-reverse diode D1 and the first electrolytic capacitor filter C1, 1 pin of power management module IC1 connects, 2 pin of power management module IC1 and the positive pole of the second electrolytic capacitor filter C2, the end of the 3rd filter capacitor C3, the end of the C4 of the 4th filter capacitor connects and conduct+5V output port of power source, the negative pole of the negative pole of the first electrolytic capacitor filter C1 and the second electrolytic capacitor filter C2, the other end of the 3rd filter capacitor C3, the other end of the 4th filter capacitor C4, 3 pin of power management module IC1 connect and ground connection.

Control module comprises the first control module, the second control module and the 3rd control module, described the first control module comprises the first control chip IC2, the 5th filter capacitor C5, the 6th filter capacitor C6, the 7th electrolytic capacitor filter C7, the 8th electrolytic capacitor filter C8, the 9th filter capacitor C9, the first pull-up resistor R1, the second pull-up resistor R2, the 3rd pull-up resistor R3, the 4th pull-up resistor R4, the 5th pull-up resistor R5, the 6th pull-up resistor R6, the 7th pull-up resistor R7, the 8th pull-up resistor R8, the 9th divider resistance R9, clock crystal oscillator Y1, the first reset key S1, described the second control module comprises the second control chip IC3, the tenth electrolytic capacitor filter C10, the tenth filter capacitor C11, described the 3rd control module comprises the 3rd control chip IC4, the 12 filter capacitor C12, the 13 filter capacitor C13, the 14 filter capacitor C14, described the first control chip IC2 model is that AT89C51, the second control chip IC3 model are that 74LS373, the 3rd control chip IC4 model are 2764,

32 pin of the first control chip IC2, 33 pin, 34 pin, 35 pin, 36 pin, 37 pin, 38 pin, 39 pin respectively with the end of the 8th pull-up resistor R8, the end of the 7th pull-up resistor R7, the end of the 6th pull-up resistor R6, the end of the 5th pull-up resistor R5, the end of the 4th pull-up resistor R4, the end of the 3rd pull-up resistor R3, the end of the second pull-up resistor R2, the end of the first pull-up resistor R1 connects, the first pull-up resistor R1, the second pull-up resistor R2, the 3rd pull-up resistor R3, the 4th pull-up resistor R4, the 5th pull-up resistor R5, the 6th pull-up resistor R6, the 7th pull-up resistor R7, the other end of the 8th pull-up resistor R8 connect and with power management module IC1+the 5V output port of power source is connected,

9 pin of the first control chip IC2 are connected with the end of the first reset key S1, the negative pole of the 7th electrolytic capacitor filter C7 and the end of the 9th divider resistance R9, connect+5V of the positive pole of the other end of the first reset key S1, the 7th electrolytic capacitor filter C7 working power, the other end ground connection of the 9th divider resistance R9; 12 pin of the first control chip IC2 meet the chip IC 6(8279 of an anti-door and DLL (dynamic link library) module) 17 pin be connected; 16 pin of the first control chip IC2 are connected with 13 pin of the chip IC 5 of signal acquisition module by a Sheffer stroke gate with 27 pin of the first control chip IC2; 17 pin of the first control chip IC2 are connected with 12 pin of the chip IC 5 of signal acquisition module by a Sheffer stroke gate with 27 pin of the first control chip IC2; 18 pin of the first control chip IC2 are connected with the end of the end of crystal oscillator Y1 and the 6th filter capacitor C6,19 pin of the first control chip IC2 are connected with the end of the other end of crystal oscillator Y1 and the 5th filter capacitor C5, and the other end of the 5th filter capacitor C5 is connected with the other end of the 6th filter capacitor C6 and ground connection; The 20 pin ground connection of the first control chip IC2; The termination 5V working power of anodal and the 9th filter capacitor C9 of the 8th electrolytic capacitor filter C8, the other end ground connection of the negative pole of the 8th electrolytic capacitor filter C8 and the 9th filter capacitor C9, connect+5V of the 40 pin working power of the first control chip IC2.

The 11 pin ground connection of the second control chip IC3; One termination of anodal and the 11 filter capacitor C11 of the tenth electrolytic capacitor filter C10+5V working power, the other end ground connection of the negative pole of the tenth electrolytic capacitor filter C10 and the 11 filter capacitor C11, connect+5V of the 12 pin working power of the second control chip IC3; 14 pin of the 3rd control chip IC4 connect the 5V working power; The 15 pin ground connection of the 3rd control chip IC4; The end of the end of the 12 filter capacitor C12, the 13 filter capacitor C13 and the 14 filter capacitor C14 connects 5V working power, the end of the 12 filter capacitor C12, the 13 filter capacitor C13 and the other end ground connection of the 14 filter capacitor C14; 28 pin of the 3rd control chip IC4 connect the 5V working power.

32 pin of the first control chip IC2 are connected with 10 pin of the second control chip IC3 and 23 pin of IC4; 33 pin of the first control chip IC2 are connected with 9 pin of the second control chip IC3 and 22 pin of IC4; 34 pin of the first control chip IC2 are connected with 8 pin of the second control chip IC3 and 21 pin of IC4; 35 pin of the first control chip IC2 are connected with 7 pin of the second control chip IC3 and 20 pin of IC4; 36 pin of the first control chip IC2 are connected with 6 pin of the second control chip IC3 and 19 pin of IC4; 37 pin of the first control chip IC2 are connected with 5 pin of the second control chip IC3 and 18 pin of IC4; 38 pin of the first control chip IC2 are connected with 4 pin of the second control chip IC3 and 17 pin of IC4; 39 pin of the first control chip IC2 are connected with 3 pin of the second control chip IC3 and 16 pin of IC4; 13 pin of the second control chip IC3 are connected with 8 pin of the 3rd control chip IC4; 14 pin of the second control chip IC3 are connected with 7 pin of the 3rd control chip IC4; 15 pin of the second control chip IC3 are connected with 6 pin of the 3rd control chip IC4; 16 pin of the second control chip IC3 are connected with 5 pin of the 3rd control chip IC4; 17 pin of the second control chip IC3 are connected with 4 pin of the 3rd control chip IC4; 18 pin of the second control chip IC3 are connected with 3 pin of the 3rd control chip IC4; 19 pin of the second control chip IC3 are connected with 2 pin of the 3rd control chip IC4; 20 pin of the second control chip IC3 are connected with 1 pin of the 3rd control chip IC4; 30 pin of the first control chip IC2 are connected with 1 pin of the second control chip IC3; 21 pin of the first control chip IC2 are connected with 13 pin of the 3rd control chip IC4; 22 pin of the first control chip IC2 are connected with 12 pin of the 3rd control chip IC4; 23 pin of the first control chip IC2 are connected with 11 pin of the 3rd control chip IC4; 24 pin of the first control chip IC2 are connected with 10 pin of the 3rd control chip IC4; 25 pin of the first control chip IC2 are connected with 9 pin of the 3rd control chip IC4.All the other pins of the first control chip IC2, the second control chip IC3, the 3rd control chip IC4 are built on stilts.

Signal acquisition module comprises signals collecting chip IC 5, the 15 electrolytic capacitor filter C15, the 16 filter capacitor C16, the 21 electrolytic capacitor filter C21, the 22 filter capacitor C22.The model of signals collecting chip IC 5 is ADC0809.

18 pin of signals collecting chip IC 5 are connected and ground connection with the end of 17 pin of signals collecting chip, the 16 filter capacitor C16, the positive pole of the 15 electrolytic capacitor filter C15, the other end of the 16 filter capacitor C16 is connected and connect+5V working power with 16 pin of signals collecting chip IC 5, the negative pole of the 15 electrolytic capacitor filter C15, the termination 5V working power of anodal and the 22 filter capacitor C22 of the 21 electrolytic capacitor filter C21, the other end ground connection of the negative pole of the 21 electrolytic capacitor filter C21 and the 22 filter capacitor C22.

1 pin of signals collecting chip IC 5 is connected with 8 pin of the 3rd control chip IC4; 2 pin of signals collecting chip IC 5 are connected with 7 pin of the 3rd control chip IC4; 3 pin of signals collecting chip IC 5 are connected with 6 pin of the 3rd control chip IC4; 4 pin of signals collecting chip IC 5 are connected with 39 pin of the first control chip IC2; 5 pin of signals collecting chip IC 5 are connected with 38 pin of the first control chip IC2; 6 pin of signals collecting chip IC 5 are connected with 37 pin of the first control chip IC2; 7 pin of signals collecting chip IC 5 are connected with 36 pin of the first control chip IC2; 8 pin of signals collecting chip IC 5 are connected with 35 pin of the first control chip IC2; 9 pin of signals collecting chip IC 5 are connected with 34 pin of the first control chip IC2; 10 pin of signals collecting IC5 are connected with 33 pin of the first control chip IC2; 11 pin of signals collecting chip IC 5 are connected with 32 pin of the first control chip IC2; The external infrared temperature-test sensor of 27 pin of signals collecting chip IC 5.All the other pins of signals collecting chip IC 5 are built on stilts.

The programmable interface module comprises programmable interface chip IC6, the 17 filter capacitor C17, the 18 electrolytic capacitor filter C18, the second reset key S2, the tenth minute piezoresistance R10.Programmable interface chip IC6 model is 8279.

Connect+5V of the positive pole working power of the end of the 17 filter capacitor C17 and the 18 electrolytic capacitor filter C18, the other end of the 17 filter capacitor C17 and the minus earth of the 18 electrolytic capacitor filter C18; 31 pin of programmable interface chip IC6 connect the end of the second reset key S2, the end of the tenth minute piezoresistance R10 of another termination of the second reset key S2, another termination of the tenth minute piezoresistance R10+5V working power; The 32 pin ground connection of programmable interface chip IC6, connect+5V of the 1 pin working power of programmable interface chip IC6,8 pin of programmable interface chip IC6,9 pin, 10 pin, 11 pin, 12 pin, 13,14,15 pin are connected with 8 pin, 9 pin, 10 pin, 11 pin of the 3rd temperature display chip IC9A respectively, and 12 pin of programmable interface chip IC6,13 pin, 14 pin, 15 pin are connected with 8 pin, 9 pin, 10 pin, 11 pin of the 4th temperature display chip IC9B respectively; 30,29,28,27,26,25,24,23,19 pin of programmable interface chip IC6 are connected with 4 pin, 5 pin, 6 pin, 7 pin, 8 pin, 9 pin, 10 pin, 11 pin, 1 pin of signals collecting chip IC 5 respectively, 2 pin of programmable interface chip IC6,3 pin, 4 pin are connected with 11 pin, 12 pin, 13 pin of coding chip IC7 respectively, and all the other pins of programmable interface chip IC6 are built on stilts;

The scan operation module comprises coding chip IC7, the 19 electrolytic capacitor filter C19, the 20 filter capacitor C20 and keyboard scan.Keyboard scan comprises the 3rd button S3, the 4th button S4, the 5th button S5, the 6th button S6, the 7th button S7, the 8th button S8, the 9th button S9, the tenth button S10, the 11 button S11, the 12 button S12, the 13 button S13, the 14 button S14, the 15 button S15, the 16 button S16, the 17 button S17, the 18 button S18, the 19 button S19, the 20 button S20, the 21 button S21, the 22 button S22, the 23 button S23, the 24 button S24, the 25 button S25, the 26 button S26, the 11 pull-up resistor R11, the 12 pull-up resistor R12, the 13 pull-up resistor R13, the 14 pull-up resistor R14, the 15 pull-up resistor R15, the 16 pull-up resistor R16, the 17 pull-up resistor R17, the 18 pull-up resistor R18, the 19 divider resistance R19, the second ten minutes piezoresistance R20, the 21 divider resistance R21.The model of coding chip IC7 is 74LS138;

9 pin of coding chip IC7 are connected and connect the 5V working power with 10 pin of coding chip IC7, the termination 5V working power of anodal and the 20 filter capacitor C20 of the 19 electrolytic capacitor filter C19, the other end ground connection of negative pole the 20 filter capacitor C20 of the 19 electrolytic capacitor filter C19; 16 pin of 14 pin of coding chip IC7,15 pin of coding chip IC7 and coding chip IC7 are connected and ground connection; 1 pin of coding chip IC7 is connected with the end of the 3rd button S3, the 11 button S11, the 19 button S19 and the 11 pull-up resistor R11, another termination 5V working power of the 11 pull-up resistor R11; 2 pin of coding chip IC7 are connected with the end of the 4th button S4, the 12 button S12, the 20 button S20 and the 12 pull-up resistor R12, another termination 5V working power of the 12 pull-up resistor R12; 3 pin of coding chip IC7 are connected with the end of the 5th button S5, the 13 button S13, the 21 button S21 and the 13 pull-up resistor R13, another termination 5V working power of the 13 pull-up resistor R13; 4 pin of coding chip IC7 are connected with the end of the 6th button S6, the 14 button S14, the 22 button S22 and the 14 pull-up resistor R14, another termination 5V working power of the 14 pull-up resistor R14; 5 pin of coding chip IC7 are connected with the end of the 7th button S7, the 15 button S15, the 23 button S23 and the 15 pull-up resistor R15, another termination 5V working power of the 15 pull-up resistor R15; 6 pin of coding chip IC7 are connected with the end of the 8th button S8, the 16 button S16, the 24 button S24 and the 16 pull-up resistor R16, another termination 5V working power of the 16 pull-up resistor R16; 7 pin of coding chip IC7 are connected with the end of the 9th button S9, the 17 button S17, the 25 button S25 and the 17 pull-up resistor R17, another termination 5V working power of the 17 pull-up resistor R17; The end of the end of 8 pin of coding chip IC7 and the tenth button S10, the 18 button S18, the 26 button S26 and the 18 pull-up resistor R18, the end of the 19 divider resistance R19, the second ten minutes piezoresistance R20, the end of the 21 divider resistance R21 are connected, another termination 5V working power of the 18 pull-up resistor R18; The other end of the other end of the 19 divider resistance R19, the second ten minutes piezoresistance R20, the other end ground connection of the 21 divider resistance R21; 36 pin of coding chip IC7 connect the other end of the 3rd button S3, the 4th button S4, the 5th button S5, the 6th button S6, the 7th button S7, the 8th button S8, the 9th button S9 and the tenth button S10; 35 pin of coding chip IC7 connect the other end of the 11 button S11, the 12 button S12, the 13 button S13, the 14 button S14, the 15 button S15, the 16 button S16, the 17 button S17 and the 18 button S18; 34 pin of coding chip IC7 connect the other end of the 19 button S19, the 20 button S20, the 21 button S21, the 22 button S22, the 23 button S23, the 24 button S24, the 25 button S25 and the 26 button S26.

Temperature display module comprises the first temperature display chip IC8A, the second temperature display chip IC8B; Charactron DS1, charactron DS2, charactron DS3; The 3rd temperature display chip IC9A, the 4th temperature display chip IC9B; The 22 pull-up resistor R22, the 23 pull-up resistor R23, the 24 pull-up resistor R24, the 25 pull-up resistor R25, the 26 pull-up resistor R26, the 27 pull-up resistor R27, the 28 pull-up resistor R28, the 29 pull-up resistor R29; The 27 electrolytic capacitor filter C27, the 28 filter capacitor C28, the second time filtering electrochemical capacitor C29, the 30 filter capacitor C30.The first temperature display chip IC8A model is DS75451, and the second temperature display chip IC8B model is DS75451, and charactron DS1 model is CPS03211, and charactron DS2 model is CPS03211, and charactron DS3 model is CPS03211.

The termination 5V working power of anodal and the 28 filter capacitor C28 of the 27 electrolytic capacitor filter C27, the other end ground connection of the negative pole of the 27 electrolytic capacitor filter C27 and the 28 filter capacitor C28; The termination 5V working power of anodal and the 30 filter capacitor C30 of the 29 electrolytic capacitor filter C29, the other end ground connection of the negative pole of the 29 electrolytic capacitor filter C29 and the 30 filter capacitor C30; The 1 pin ground connection of chip IC 9A, 14 pin of chip IC 9A connect the 5V working power; The 1 pin ground connection of chip IC 9B, 14 pin of chip IC 9B connect the 5V working power; 7 pin of charactron DS1, charactron DS2 and charactron DS3 are connected with the end of 2 pin of chip IC 9A and the 29 pull-up resistor R29, another termination 5V working power of the 29 pull-up resistor R29; 3 pin of charactron DS1, charactron DS2 and charactron DS3 are connected with the end of 3 pin of chip IC 9A and the 28 pull-up resistor R28, another termination 5V working power of the 28 pull-up resistor R28; 2 pin of charactron DS1, charactron DS2 and charactron DS3 are connected with the end of 4 pin of chip IC 9A and the 27 pull-up resistor R27, another termination 5V working power of the 27 pull-up resistor R27; 4 pin of charactron DS1, charactron DS2 and charactron DS3 are connected with the end of 5 pin of chip IC 9A and the 26 pull-up resistor R26, another termination 5V working power of the 26 pull-up resistor R26; 5 pin of charactron DS1, charactron DS2 and charactron DS3 are connected with the end of 2 pin of chip IC 9B and the 25 pull-up resistor R25, another termination 5V working power of the 25 pull-up resistor R25; 8 pin of charactron DS1, charactron DS2 and charactron DS3 are connected with the end of 3 pin of chip IC 9B and the 24 pull-up resistor R24, another termination 5V working power of the 24 pull-up resistor R24; 9 pin of charactron DS1, charactron DS2 and charactron DS3 are connected with the end of 4 pin of chip IC 9B and the 23 pull-up resistor R23, another termination 5V working power of the 23 pull-up resistor R23; 10 pin of charactron DS1, charactron DS2 and charactron DS3 are connected with the end of 5 pin of chip IC 9B and the 22 pull-up resistor R22, another termination 5V working power of the 22 pull-up resistor R22; 1 pin of charactron DS1 is connected with 6 pin and connects 2 pin of chip IC 8A; 1 pin of charactron DS2 is connected with 6 pin and connects 4 pin of chip IC 8A; 1 pin of charactron DS3 is connected with 6 pin and connects 2 pin of chip IC 8B; 5 pin of chip IC 8A are connected with 1 pin of chip IC 7; 5 pin of chip IC 8B are connected with 8 pin of chip IC 7;

The utility model basis signal acquisition module collection of temperature to external world changes into simulating signal and passes to controller, then by controller, simulating signal is changed into to digital signal, be presented at charactron, allow operating personnel can clearly know the temperature of heater element, and then adjust temperature and make technique more to meet the requirements.

The accompanying drawing explanation

A kind of AT89C51 single-chip microcomputer of Fig. 1 infrared temperature measurement system structural representation block diagram;

A kind of AT89C51 single-chip microcomputer of Fig. 2 infrared temperature measurement system power management module circuit theory diagrams;

A kind of AT89C51 single-chip microcomputer of Fig. 3 infrared temperature measurement system control module circuit theory diagrams;

A kind of AT89C51 single-chip microcomputer of Fig. 4 infrared temperature measurement system signal acquisition module circuit theory diagrams;

A kind of AT89C51 single-chip microcomputer of Fig. 5 infrared temperature measurement system programmable interface modular circuit schematic diagram;

A kind of AT89C51 single-chip microcomputer of Fig. 6 infrared temperature measurement system scan operation modular circuit schematic diagram;

A kind of AT89C51 single-chip microcomputer of Fig. 7 infrared temperature measurement system temperature display module circuit theory diagrams.

Embodiment

As shown in Figure 1, a kind of AT89C51 single-chip microcomputer of the utility model infrared temperature measurement system comprises power management module 1, the first control module 2, the second control module 3, the 3rd control module 4, signal acquisition module 5, programmable interface module 6, scan operation module 7, temperature display module 8;

Figure 2 shows that the circuit theory diagrams of the power management module of this utility model: power management module comprises IC1(LM7508), the first anti-reverse diode D1, the first electrolytic capacitor filter C1, the second electrolytic capacitor filter C2, the 3rd filter capacitor C3, the 4th filter capacitor C4.

The anode of the first anti-reverse diode D1 connects 12 given total power supplies, and the negative electrode of the first anti-reverse diode D1 connects the positive pole of the first electrolytic capacitor filter C1 and 1 pin of power management module IC1, the minus earth of the first electrolytic capacitor filter C1; 2 pin of power management module IC1 connect the end of the C4 of the end of positive pole, the 3rd filter capacitor C3 of the second electrolytic capacitor filter C2 and the 4th filter capacitor, the other end ground connection of the other end of the negative pole of the second electrolytic capacitor filter C2, the 3rd filter capacitor C3 and the 4th filter capacitor C4.

Figure 3 shows that the circuit theory diagrams of the controller module of this utility model: control module comprises the first control chip IC2 (AT89C51), the 5th filter capacitor C5, the 6th filter capacitor C6, the 7th electrolytic capacitor filter C7, the 8th electrolytic capacitor filter C8, the 9th filter capacitor C9, the first pull-up resistor R1, the second pull-up resistor R2, the 3rd pull-up resistor R3, the 4th pull-up resistor R4, the 5th pull-up resistor R5, the 6th pull-up resistor R6, the 7th pull-up resistor R7, the 8th pull-up resistor R8, the 9th divider resistance R9, clock crystal oscillator Y1, the first reset key S1; The second control chip IC3 (74LS373), the tenth electrolytic capacitor filter C10, the tenth filter capacitor C11; The 3rd control chip IC4(2764), the 12 filter capacitor C12, the 13 filter capacitor C13, the 14 filter capacitor C14.

39 pin of the first control chip IC2 (AT89C51) are connected with the end of the first pull-up resistor R1, and the other end of the first pull-up resistor R1 connects the 5V working power that power module is supplied with; 38 pin of the first control chip IC2 are connected with the end of the second pull-up resistor R2, and the other end of the second pull-up resistor R2 connects the 5V working power that power module is supplied with; 37 pin of the first control chip IC2 are connected with the end of the 3rd pull-up resistor R3, and the other end of the 3rd pull-up resistor R3 connects the 5V working power that power module is supplied with; ; 36 pin of the first control chip IC2 are connected with the end of the 4th pull-up resistor R4, and the other end of the 4th pull-up resistor R4 connects the 5V working power that power module is supplied with; ; 35 pin of the first control chip IC2 are connected with the end of the 5th pull-up resistor R5, and the other end of the 5th pull-up resistor R5 connects the 5V working power that power module is supplied with; 34 pin of the one the first control chip IC2 are connected with the end of the 6th pull-up resistor R6, and the other end of the 6th pull-up resistor R6 connects the 5V working power that power module is supplied with; ; 33 pin of the first control chip IC2 are connected with the end of the 7th pull-up resistor R7, and the other end of the 7th pull-up resistor R7 connects the 5V working power that power module is supplied with; ; 32 pin of the first control chip IC2 are connected with the end of the 8th pull-up resistor R8, and the other end of the 8th pull-up resistor R8 connects the 5V working power that power module is supplied with; 9 pin of the first control chip IC2 are connected with the end of the first reset key S1, the negative pole of the 7th electrolytic capacitor filter C7 and the end of the 9th divider resistance R9, another termination 5 couchers of the first reset key S1 are made power supply, the positive pole of the 7th electrolytic capacitor filter C7 connects the 5V working power, the other end ground connection of the 9th divider resistance R9; 12 pin of the first control chip IC2 meet the chip IC 6(8279 of an anti-door and DLL (dynamic link library) module) 17 pin be connected; 27 pin of 16 pin of the first control chip IC2 and the first control chip IC2 are the chip IC 5(0809 with signal acquisition module by a Sheffer stroke gate) 13 pin be connected; 17 pin of the first control chip IC2 are connected with 12 pin of the chip IC 5 of signal acquisition module by a Sheffer stroke gate with 27 pin of the first control chip IC2; 18 pin of the first control chip IC2 are connected with the end of the end of crystal oscillator Y1 and the 6th filter capacitor C6,19 pin of the first control chip IC2 are connected with the end of the other end of crystal oscillator Y1 and the 5th filter capacitor C5, the other end ground connection of the 5th filter capacitor C5 and the 6th filter capacitor C6; The 20 pin ground connection of the first control chip IC2; The termination 5V working power of anodal and the 9th filter capacitor C9 of the 8th electrolytic capacitor filter C8, the other end ground connection of the negative pole of the 8th electrolytic capacitor filter C8 and the 9th filter capacitor C9,40 pin of the first control chip IC2 connect the 5V working power.

11 pin ground connection of chip IC 3; The termination 5V working power of anodal and the 11 filter capacitor C11 of the tenth electrolytic capacitor filter C10, the other end ground connection of the negative pole of the tenth electrolytic capacitor filter C10 and the 11 filter capacitor C11,12 pin of chip IC 3 connect the 5V working power; 14 pin of chip IC 4 connect the 5V working power; 15 pin ground connection of chip IC 4; The end of the end of the 12 filter capacitor C12, the 13 filter capacitor C13 and the 14 filter capacitor C14 connects 5V working power, the end of the 12 filter capacitor C12, the 13 filter capacitor C13 and the other end ground connection of the 14 filter capacitor C14; 28 pin of chip IC 4 connect the 5V working power.

32 pin of chip IC 2 are connected with 23 pin of 10 pin of chip IC 3 and IC4; 33 pin of chip IC 2 are connected with 22 pin of 9 pin of chip IC 3 and IC4; 34 pin of chip IC 2 are connected with 21 pin of 8 pin of chip IC 3 and IC4; 35 pin of chip IC 2 are connected with 20 pin of 7 pin of chip IC 3 and IC4; 36 pin of chip IC 2 are connected with 19 pin of 6 pin of chip IC 3 and IC4; 37 pin of chip IC 2 are connected with 18 pin of 5 pin of chip IC 3 and IC4; 38 pin of chip IC 2 are connected with 17 pin of 4 pin of chip IC 3 and IC4; 39 pin of chip IC 2 are connected with 16 pin of 3 pin of chip IC 3 and IC4; 13 pin of chip IC 3 are connected with 8 pin of chip IC 4; 14 pin of chip IC 3 are connected with 7 pin of chip IC 4; 15 pin of chip IC 3 are connected with 6 pin of chip IC 4; 16 pin of chip IC 3 are connected with 5 pin of chip IC 4; 17 pin of chip IC 3 are connected with 4 pin of chip IC 4; 18 pin of chip IC 3 are connected with 3 pin of chip IC 4; 19 pin of chip IC 3 are connected with 2 pin of chip IC 4; 20 pin of chip IC 3 are connected with 1 pin of chip IC 4; 30 pin of chip IC 2 are connected with 1 pin of chip IC 3.

Figure 4 shows that this utility model system signal acquisition module circuit theory diagrams: signal acquisition module comprises signals collecting chip IC 5(ADC0809), the 15 electrolytic capacitor filter C15, the 16 filter capacitor C16, the 21 electrolytic capacitor filter C21, the 22 filter capacitor C22.

18 pin of signals collecting chip IC 5 are connected with 17 pin of signals collecting chip; The end of the 16 filter capacitor C16 is connected with 18 pin of signals collecting chip IC 5 and the positive pole of the 15 electrolytic capacitor filter C15, the other end of ground 16 filter capacitor C16 is connected with 16 pin of signals collecting chip IC 5 and the negative pole of the 15 electrolytic capacitor filter C15, the end of the 16 filter capacitor C16 and the plus earth of the 15 electrolytic capacitor filter C15, the other end of the 16 filter capacitor C16 and the negative pole of the 15 electrolytic capacitor filter C15 connect the 5V working power; The termination 5V working power of anodal and the 22 filter capacitor C22 of the 21 electrolytic capacitor filter C21, the other end ground connection of the negative pole of the 21 electrolytic capacitor filter and the 22 filter capacitor C22.

1 pin of chip IC 5 is connected with 8 pin of chip IC 4; 2 pin of chip IC 5 are connected with 7 pin of chip IC 4; 3 pin of chip IC 5 are connected with 6 pin of chip IC 4; 4 pin of chip IC 5 are connected with 39 pin of chip IC 4; 5 pin of chip IC 5 are connected with 38 pin of chip IC 4; 6 pin of chip IC 5 are connected with 37 pin of chip IC 4; 7 pin of chip IC 5 are connected with 36 pin of chip IC 4; 8 pin of chip IC 5 are connected with 35 pin of chip IC 4; 9 pin of chip IC 5 are connected with 34 pin of chip IC 4; 10 pin of chip IC 5 are connected with 33 pin of chip IC 4; 11 pin of chip IC 5 are connected with 33 pin of chip IC 4; The external infrared temperature-test sensor of 27 pin of chip IC 5.

Figure 5 shows that this utility model system programmable interface module circuit theory diagrams: the programmable interface module comprises programmable interface chip IC6(8279), the 17 filter capacitor C17, the 18 electrolytic capacitor filter C18, the second reset key S2, the tenth minute piezoresistance R10.

The end of the 17 filter capacitor C17 of programmable interface chip IC6 and the positive pole of the 18 electrolytic capacitor filter C18 connect the 5V working power, the other end of the 17 filter capacitor C17 of programmable interface chip IC6 and the minus earth of the 18 electrolytic capacitor filter C18; 31 pin of programmable interface chip IC6 connect the end of the second reset key S2, the end of the tenth minute piezoresistance R10 of another termination of the second reset key S2, another termination 5V working power of the tenth minute piezoresistance R10; 32 pin ground connection of programmable interface chip.

Figure 6 shows that this utility model system scan operational module circuit theory diagrams: the scan operation module comprises coding chip IC7(74LS138), the 19 electrolytic capacitor filter C19, the 20 filter capacitor C20 and keyboard scan.Keyboard scan comprises the 3rd button S3, the 4th button S4, the 5th button S5, the 6th button S6, the 7th button S7, the 8th button S8, the 9th button S9, the tenth button S10, the 11 button S11, the 12 button S12, the 13 button S13, the 14 button S14, the 15 button S15, the 16 button S16, the 17 button S17, the 18 button S18, the 19 button S19, the 20 button S20, the 21 button S21, the 22 button S22, the 23 button S23, the 24 button S24, the 25 button S25, the 26 button S26, the 11 pull-up resistor R11, the 12 pull-up resistor R12, the 13 pull-up resistor R13, the 14 pull-up resistor R14, the 15 pull-up resistor R15, the 16 pull-up resistor R16, the 17 pull-up resistor R17, the 18 pull-up resistor R18, the 19 divider resistance R19, the second ten minutes piezoresistance R20, the 21 divider resistance R21.

9 pin of coding chip IC7 and 10 pin of coding chip IC7 are connected and connect the 5V working power, the termination 5V working power of anodal and the 20 filter capacitor C20 of the 19 electrolytic capacitor filter C19, negative pole the 20 filter capacitor C20's of the 19 electrolytic capacitor filter C19; Other end ground connection; 16 pin of 14 pin of coding chip IC7,15 pin of coding chip IC7 and coding chip IC7 are connected and ground connection; 1 pin of coding chip IC7 is connected with the end of the 3rd button S3, the 11 button S11, the 19 button S19 and the 11 pull-up resistor R11, another termination 5V working power of the 11 pull-up resistor R11; 2 pin of coding chip IC7 are connected with the end of the 4th button S4, the 12 button S12, the 20 button S20 and the 12 pull-up resistor R12, another termination 5V working power of the 12 pull-up resistor R12; 3 pin of coding chip IC7 are connected with the end of the 5th button S5, the 13 button S13, the 21 button S21 and the 13 pull-up resistor R13, another termination 5V working power of the 13 pull-up resistor R13; 4 pin of coding chip IC7 are connected with the end of the 6th button S6, the 14 button S14, the 22 button S22 and the 14 pull-up resistor R14, another termination 5V working power of the 14 pull-up resistor R14; 5 pin of coding chip IC7 are connected with the end of the 7th button S7, the 15 button S15, the 23 button S23 and the 15 pull-up resistor R15, another termination 5V working power of the 15 pull-up resistor R15; 6 pin of coding chip IC7 are connected with the end of the 8th button S8, the 16 button S16, the 24 button S24 and the 16 pull-up resistor R16, another termination 5V working power of the 16 pull-up resistor R16; 7 pin of coding chip IC7 are connected with the end of the 9th button S9, the 17 button S17, the 25 button S25 and the 17 pull-up resistor R17, another termination 5V working power of the 17 pull-up resistor R17; 8 pin of coding chip IC7 are connected with the end of the tenth button S10, the 18 button S18, the 26 button S26 and the 18 pull-up resistor R18, another termination 5V working power of the 18 pull-up resistor R18; 36 pin of coding chip IC7 connect the other end of the 3rd button S3, the 4th button S4, the 5th button S5, the 6th button S6, the 7th button S7, the 8th button S8, the 9th button S9 and the tenth button S10; 35 pin of coding chip IC7 connect the other end of the 11 button S11, the 12 button S12, the 13 button S13, the 14 button S14, the 15 button S15, the 16 button S16, the 17 button S17 and the 18 button S18; 34 pin of coding chip IC7 connect the other end of the 19 button S19, the 20 button S20, the 21 button S21, the 22 button S22, the 23 button S23, the 24 button S24, the 25 button S25 and the 26 button S26; The end of a termination the tenth button S10 of the 19 divider resistance R19, other end ground connection; The end of termination the 18 button S18 of the second ten minutes piezoresistance R20, other end ground connection; The end of termination the 26 button S26 of the 21 divider resistance R21, other end ground connection; 11 pin of coding chip IC7 connect 2 pin of programmable interface chip IC6; 12 pin of coding chip IC7 connect 3 pin of programmable interface chip IC6; 13 pin of coding chip IC7 connect 4 pin of programmable interface chip IC6.

Figure 7 shows that this utility model system temperature display module circuit theory diagrams: temperature display module comprises chip IC 8A(DS75451), chip IC 8B(DS75451); Charactron DS1(CPS03211), charactron DS2(CPS03211), charactron DS3(CPS03211); Chip IC 9A(7406), chip IC 9B(7406); The 22 pull-up resistor R22, the 23 pull-up resistor R23, the 24 pull-up resistor R24, the 25 pull-up resistor R25, the 26 pull-up resistor R26, the 27 pull-up resistor R27, the 28 pull-up resistor R28, the 29 pull-up resistor R29; The 27 electrolytic capacitor filter C27, the 28 filter capacitor C28, the second time filtering electrochemical capacitor C29, the 30 filter capacitor C30.

The termination 5V working power of anodal and the 28 filter capacitor C28 of the 27 electrolytic capacitor filter C27, other end ground connection; The termination 5V working power of anodal and the 30 filter capacitor C30 of the 29 electrolytic capacitor filter C29, other end ground connection; The 1 pin ground connection of chip IC 9A, 14 pin of chip IC 9A connect the 5V working power; The 1 pin ground connection of chip IC 9B, 14 pin of chip IC 9B connect the 5V working power; 7 pin of charactron DS1, charactron DS2 and charactron DS3 are connected with the end of 2 pin of chip IC 9A and the 29 pull-up resistor R29, another termination 5V working power of the 29 pull-up resistor R29; 3 pin of charactron DS1, charactron DS2 and charactron DS3 are connected with the end of 3 pin of chip IC 9A and the 28 pull-up resistor R28, another termination 5V working power of the 28 pull-up resistor R28; 2 pin of charactron DS1, charactron DS2 and charactron DS3 are connected with the end of 4 pin of chip IC 9A and the 27 pull-up resistor R27, another termination 5V working power of the 27 pull-up resistor R27; 4 pin of charactron DS1, charactron DS2 and charactron DS3 are connected with the end of 5 pin of chip IC 9A and the 26 pull-up resistor R26, another termination 5V working power of the 26 pull-up resistor R26; 5 pin of charactron DS1, charactron DS2 and charactron DS3 are connected with the end of 2 pin of chip IC 9B and the 25 pull-up resistor R25, another termination 5V working power of the 25 pull-up resistor R25; 8 pin of charactron DS1, charactron DS2 and charactron DS3 are connected with the end of 3 pin of chip IC 9B and the 24 pull-up resistor R24, another termination 5V working power of the 24 pull-up resistor R24; 9 pin of charactron DS1, charactron DS2 and charactron DS3 are connected with the end of 4 pin of chip IC 9B and the 23 pull-up resistor R23, another termination 5V working power of the 23 pull-up resistor R23; 10 pin of charactron DS1, charactron DS2 and charactron DS3 are connected with the end of 5 pin of chip IC 9B and the 22 pull-up resistor R22, another termination 5V working power of the 22 pull-up resistor R22; 1 pin of charactron DS1 is connected with 6 pin and connects 2 pin of chip IC 8A; 1 pin of charactron DS2 is connected with 6 pin and connects 4 pin of chip IC 8A; 1 pin of charactron DS3 is connected with 6 pin and connects 2 pin of chip IC 8B; 5 pin of chip IC 8A are connected with 1 pin of chip IC 7; 5 pin of chip IC 8B are connected with 8 pin of chip IC 7; 8 pin of chip IC 9A are connected with 8 pin of chip IC 6; 9 pin of chip IC 9A are connected with 9 pin of chip IC 6; 10 pin of chip IC 9A are connected with 10 pin of chip IC 6; 11 pin of chip IC 9A are connected with 11 pin of chip IC 6; 8 pin of chip IC 9B are connected with 12 pin of chip IC 6; 9 pin of chip IC 9B are connected with 13 pin of chip IC 6; 10 pin of chip IC 9B are connected with 14 pin of chip IC 6; 11 pin of chip IC 9B are connected with 15 pin of chip IC 6.

Power management module 1 is this system power module used, for each chip of system is carried the 5V operating voltage; Accept simulating signal from infrared temperature-test sensor and be converted into digital signal transfers to controller by the first control module 2, the second control module 3, the 3rd control module 4; Three 8 sections LED charactrons are for the display measurement temperature, but controller online modification parameters, and so that operation, the interface chip of monitor keyboard and microcontroller 89C51 adopts programmable interface chip 8279.8279 keyboard scan mode: sweep trace SL0 ~ SL2 show that after the 74LS138 decoder for decoding temperature display module 8 is connected to keyboard with sweep trace, with tropic RL0 ~ RL2, forms 24 key row.The IN0 mouth of ADC0809 receives the signal of temperature sensor, passes to controller and passes to controller AT89C51, and the data that controller will show are sent into 8279,8279 and coordinated demonstration information with charactron.The utility model is for the temperature survey lacked in the tempering process process and thermograph link, adopt the infrared thermometry method, measure, show, record, report to the police by AT89C51 chip microcontroller temperature, select the non-contact infrared measuring sonde, complete sampling by AT89C51 single-chip microcomputer and high-precision adc, the various calculating of non-linear correction and the data of surveying, the instantaneous value of displays temperature, adopt six LED to show, and there is interface to export binary-coded decimal, by printer time-write interval, measured value, alarm condition.

Claims

1.AT89C51 single-chip infrared temperature measurement system, including power management module, control module, signal acquisition module, programmable interface module, scanning operation module, temperature display module;

It is characterized in that: the power management module includes a power management chip IC1, a first anti-reverse connection diode D1, a first filter electrolytic capacitor C1, a second filter electrolytic capacitor C2, a third filter capacitor C3, a fourth filter capacitor C4, and a power management chip IC1 model is LM7508;

The anode of the first anti-reverse connection diode D1 is connected to a given 12V power supply, the cathode of the first anti-reverse connection diode D1 is connected to the anode of the first filter electrolytic capacitor C1, pin 1 of the power management module IC1, and 2 pins of the power management module IC1 The pin is connected to the positive pole of the second filter electrolytic capacitor C2, one end of the third filter capacitor C3, and one end of the fourth filter capacitor C4 as a +5V power output port, and the negative pole of the first filter electrolytic capacitor C1 is connected to the second filter electrolytic capacitor The negative pole of C2, the other end of the third filter capacitor C3, the other end of the fourth filter capacitor C4, and the pin 3 of the power management module IC1 are connected and grounded;

The control module includes a first control module, a second control module and a third control module; the first control module includes a first control chip IC2, a fifth filter capacitor C5, a sixth filter capacitor C6, and a seventh filter electrolytic capacitor C7 , the eighth filter electrolytic capacitor C8, the ninth filter capacitor C9, the first pull-up resistor R1, the second pull-up resistor R2, the third pull-up resistor R3, the fourth pull-up resistor R4, the fifth pull-up resistor R5, the Sixth pull-up resistor R6, seventh pull-up resistor R7, eighth pull-up resistor R8, ninth voltage divider resistor R9, clock crystal oscillator Y1, first reset button S1, the second control module includes a second control chip IC3 , the tenth filter electrolytic capacitor C10, the tenth filter capacitor C11; the third control module includes a third control chip IC4, a twelfth filter capacitor C12, a thirteenth filter capacitor C13, and a fourteenth filter capacitor C14; The model of the first control chip IC2 mentioned above is AT89C51, the model of the second control chip IC3 is 74LS373, and the model of the third control chip IC4 is 2764;

Pins 32, 33, 34, 35, 36, 37, 38, and 39 of the first control chip IC2 are respectively connected to one end of the eighth pull-up resistor R8, one end of the seventh pull-up resistor R7, and the first pull-up resistor R7. One end of the sixth pull-up resistor R6, one end of the fifth pull-up resistor R5, one end of the fourth pull-up resistor R4, one end of the third pull-up resistor R3, one end of the second pull-up resistor R2, the first pull-up resistor R1 The first pull-up resistor R1, the second pull-up resistor R2, the third pull-up resistor R3, the fourth pull-up resistor R4, the fifth pull-up resistor R5, the sixth pull-up resistor R6, the seventh pull-up resistor The other end of the resistor R7 and the eighth pull-up resistor R8 are connected to the +5V power output port of the power management module IC1;

Pin 9 of the first control chip IC2 is connected to one end of the first reset button S1, the negative pole of the seventh filter electrolytic capacitor C7 and one end of the ninth voltage dividing resistor R9, the other end of the first reset button S1, the seventh filter electrolytic capacitor The positive pole of C7 is connected to the +5V working power supply, and the other end of the ninth voltage dividing resistor R9 is grounded; the 12-pin of the first control chip IC2 is connected to an inverted gate and connected to the 17-pin of the chip IC6 (8279) of the programming interface module; the first control The 16 pins of the chip IC2 are connected with the 27 pins of the first control chip IC2 through a NAND gate and the 13 pins of the chip IC5 of the signal acquisition module; the 17 pins of the first control chip IC2 are connected with the 27 pins of the first control chip IC2 through a The NAND gate is connected to the 12 pins of the chip IC5 of the signal acquisition module; the 18 pins of the first control chip IC2 are connected to one end of the crystal oscillator Y1 and one end of the sixth filter capacitor C6; the 19 pins of the first control chip IC2 are connected to the crystal oscillator Y1 The other end is connected to one end of the fifth filter capacitor C5, and the other end of the fifth filter capacitor C5 is connected to the other end of the sixth filter capacitor C6 and grounded; the 20 pin of the first control chip IC2 is grounded; the eighth filter electrolytic capacitor C8 The positive pole and one end of the ninth filter capacitor C9 are connected to a 5V working power supply, the negative pole of the eighth filter electrolytic capacitor C8 and the other end of the ninth filter capacitor C9 are grounded, and pin 40 of the first control chip IC2 is connected to a +5V working power supply;

Pin 11 of the second control chip IC3 is grounded; the positive pole of the tenth filter electrolytic capacitor C10 and one end of the eleventh filter capacitor C11 are connected to +5V working power supply, the negative pole of the tenth filter electrolytic capacitor C10 and the other end of the eleventh filter capacitor C11 One end is grounded, the 12th pin of the second control chip IC3 is connected to the +5V working power supply; the 14th pin of the third control chip IC4 is connected to the 5V working power supply; the 15th pin of the third control chip IC4 is grounded; the twelfth filter capacitor C12, the thirteenth One end of the filter capacitor C13 and one end of the fourteenth filter capacitor C14 are connected to a 5V working power supply, one end of the twelfth filter capacitor C12, one end of the thirteenth filter capacitor C13, and the other end of the fourteenth filter capacitor C14 are grounded; the third The 28-pin of the control chip IC4 is connected to the 5V working power supply;

Pin 32 of the first control chip IC2 is connected to pin 10 of the second control chip IC3 and pin 23 of IC4; pin 33 of the first control chip IC2 is connected to pin 9 of the second control chip IC3 and pin 22 of IC4; the first Pin 34 of the control chip IC2 is connected to pin 8 of the second control chip IC3 and pin 21 of IC4; pin 35 of the first control chip IC2 is connected to pin 7 of the second control chip IC3 and pin 20 of IC4; the first control chip Pin 36 of IC2 is connected to pin 6 of the second control chip IC3 and pin 19 of IC4; pin 37 of the first control chip IC2 is connected to pin 5 of the second control chip IC3 and pin 18 of IC4; pin 18 of the first control chip IC2 Pin 38 is connected to pin 4 of the second control chip IC3 and pin 17 of IC4; pin 39 of the first control chip IC2 is connected to pin 3 of the second control chip IC3 and pin 16 of IC4; pin 13 of the second control chip IC3 It is connected with pin 8 of the third control chip IC4; pin 14 of the second control chip IC3 is connected with pin 7 of the third control chip IC4; pin 15 of the second control chip IC3 is connected with pin 6 of the third control chip IC4; Pin 16 of the second control chip IC3 is connected to pin 5 of the third control chip IC4; pin 17 of the second control chip IC3 is connected to pin 4 of the third control chip IC4; pin 18 of the second control chip IC3 is connected to the third control chip Pin 3 of IC4 is connected; pin 19 of the second control chip IC3 is connected to pin 2 of the third control chip IC4; pin 20 of the second control chip IC3 is connected to pin 1 of the third control chip IC4; pin 1 of the first control chip IC2 Pin 30 is connected to pin 1 of the second control chip IC3; pin 21 of the first control chip IC2 is connected to pin 13 of the third control chip IC4; pin 22 of the first control chip IC2 is connected to pin 12 of the third control chip IC4 ; The 23 pins of the first control chip IC2 are connected with the 11 pins of the third control chip IC4; the 24 pins of the first control chip IC2 are connected with the 10 pins of the third control chip IC4; the 25 pins of the first control chip IC2 are connected with the third The 9 pins of the control chip IC4 are connected; the remaining pins of the first control chip IC2, the second control chip IC3, and the third control chip IC4 are overhead;

The signal acquisition module includes a signal acquisition chip IC5, a fifteenth filter electrolytic capacitor C15, a sixteenth filter capacitor C16, a twenty-first filter electrolytic capacitor C21, and a twenty-second filter capacitor C22; the model of the signal acquisition chip IC5 is ADC0809;

Pin 18 of the signal acquisition chip IC5 is connected to pin 17 of the signal acquisition chip, one end of the sixteenth filter capacitor C16, and the positive pole of the fifteenth filter electrolytic capacitor C15 is connected to ground, and the other end of the sixteenth filter capacitor C16 is connected to the signal acquisition chip. Pin 16 of IC5, the negative electrode of the fifteenth filter electrolytic capacitor C15 are connected to the +5V working power supply, the positive electrode of the twenty-first filter electrolytic capacitor C21 and one end of the twenty-second filter capacitor C22 are connected to the 5V working power supply, and the twenty-first The negative electrode of a filter electrolytic capacitor C21 and the other end of the twenty-second filter capacitor C22 are grounded;

Pin 1 of the signal acquisition chip IC5 is connected to pin 8 of the third control chip IC4; pin 2 of the signal acquisition chip IC5 is connected to pin 7 of the third control chip IC4; pin 3 of the signal acquisition chip IC5 is connected to pin 3 of the third control chip IC4 The 6 pins are connected; the 4 pins of the signal acquisition chip IC5 are connected with the 39 pins of the first control chip IC2; the 5 pins of the signal acquisition chip IC5 are connected with the 38 pins of the first control chip IC2; the 6 pins of the signal acquisition chip IC5 are connected with the first The 37 pins of the control chip IC2 are connected; the 7 pins of the signal acquisition chip IC5 are connected with the 36 pins of the first control chip IC2; the 8 pins of the signal acquisition chip IC5 are connected with the 35 pins of the first control chip IC2; the 9 pins of the signal acquisition chip IC5 are connected. The pin is connected with the 34 pin of the first control chip IC2; the 10 pin of the signal acquisition IC5 is connected with the 33 pin of the first control chip IC2; the 11 pin of the signal acquisition chip IC5 is connected with the 32 pin of the first control chip IC2; the signal acquisition chip The 27 pins of IC5 are externally connected with an infrared temperature sensor; the remaining pins of the signal acquisition chip IC5 are overhead;

The programmable interface module includes a programmable interface chip IC6, a seventeenth filter capacitor C17, an eighteenth filter electrolytic capacitor C18, a second reset button S2, and a tenth voltage resistor R10; the model of the programmable interface chip IC6 is 8279;

One end of the seventeenth filter capacitor C17 and the positive pole of the eighteenth filter electrolytic capacitor C18 are connected to the +5V operating power supply, the other end of the seventeenth filter capacitor C17 and the negative pole of the eighteenth filter electrolytic capacitor C18 are grounded; programmable interface chip IC6 Pin 31 of the pin is connected to one end of the second reset button S2, the other end of the second reset button S2 is connected to one end of the 10th voltage resistor R10, and the other end of the 10th voltage resistor R10 is connected to +5V working power supply; programmable interface chip IC6 The 32 pins of the programmable interface chip IC6 are connected to the +5V working power supply, and the 8 pins, 9 pins, 10 pins, 11 pins, 12 pins, 13, 14, and 15 pins of the programmable interface chip IC6 are respectively connected to the third The 8 pins, 9 pins, 10 pins, and 11 pins of the temperature display chip IC9A are connected, and the 12 pins, 13 pins, 14 pins, and 15 pins of the programmable interface chip IC6 are respectively connected with the 8 pins, 9 pins, and 9 pins of the fourth temperature display chip IC9B. 10-pin and 11-pin connections; pins 30, 29, 28, 27, 26, 25, 24, 23, and 19 of the programmable interface chip IC6 are respectively connected to pins 4, 5, 6, and 7 of the signal acquisition chip IC5. 8-pin, 9-pin, 10-pin, 11-pin, 1-pin are connected, 2-pin, 3-pin, 4-pin of programmable interface chip IC6 are respectively connected with 11-pin, 12-pin, 13-pin of decoding chip IC7, programmable interface The remaining pins of chip IC6 are overhead;

The scanning operation module includes a decoding chip IC7, a nineteenth filter electrolytic capacitor C19, a twentieth filter capacitor C20 and a scanning keyboard; the scanning keyboard includes a third key S3, a fourth key S4, a fifth key S5, a sixth key S6, The seventh button S7, the eighth button S8, the ninth button S9, the tenth button S10, the eleventh button S11, the twelfth button S12, the thirteenth button S13, the fourteenth button S14, the fifteenth button S15, The sixteenth button S16, the seventeenth button S17, the eighteenth button S18, the nineteenth button S19, the twentieth button S20, the twenty-first button S21, the twenty-second button S22, the twenty-third button S23 , the twenty-fourth button S24, the twenty-fifth button S25, the twenty-sixth button S26; the eleventh pull-up resistor R11, the twelfth pull-up resistor R12, the thirteenth pull-up resistor R13, the fourteenth upper Pull-up resistor R14, 15th pull-up resistor R15, 16th pull-up resistor R16, 17th pull-up resistor R17, 18th pull-up resistor R18, 19th voltage divider R19, 20th voltage divider R20, the twenty-first voltage divider resistor R21; the model of the decoding chip IC7 is 74LS138;

Pin 9 of the decoding chip IC7 is connected to pin 10 of the decoding chip IC7 and connected to a 5V working power supply, the positive electrode of the nineteenth filter electrolytic capacitor C19 and one end of the twentieth filter capacitor C20 are connected to the 5V working power supply The other end of the negative pole of the capacitor C19 and the twentieth filter capacitor C20 are grounded; the 14 pins of the decoding chip IC7, the 15 pins of the decoding chip IC7 and the 16 pins of the decoding chip IC7 are connected and grounded; the 1 pin of the decoding chip IC7 is connected to the ground; The third button S3, the eleventh button S11, the nineteenth button S19 and one end of the eleventh pull-up resistor R11 are connected, and the other end of the eleventh pull-up resistor R11 is connected to a 5V working power supply; pin 2 of the decoding chip IC7 It is connected to one end of the fourth button S4, the twelfth button S12, the twentieth button S20 and the twelfth pull-up resistor R12, and the other end of the twelfth pull-up resistor R12 is connected to a 5V working power supply; 3 of the decoding chip IC7 The pin is connected to one end of the fifth button S5, the thirteenth button S13, the twenty-first button S21 and the thirteenth pull-up resistor R13, and the other end of the thirteenth pull-up resistor R13 is connected to a 5V working power supply; the decoding chip IC7 Pin 4 of the pin is connected to the sixth button S6, the fourteenth button S14, the twenty-second button S22 and one end of the fourteenth pull-up resistor R14, and the other end of the fourteenth pull-up resistor R14 is connected to a 5V working power supply; decoding Pin 5 of the chip IC7 is connected to the seventh button S7, the fifteenth button S15, the twenty-third button S23 and one end of the fifteenth pull-up resistor R15, and the other end of the fifteenth pull-up resistor R15 is connected to a 5V working power supply; Pin 6 of the decoding chip IC7 is connected to the eighth button S8, the sixteenth button S16, the twenty-fourth button S24 and one end of the sixteenth pull-up resistor R16, and the other end of the sixteenth pull-up resistor R16 is connected to 5V to work Power supply; pin 7 of the decoding chip IC7 is connected to one end of the ninth button S9, the seventeenth button S17, the twenty-fifth button S25 and the seventeenth pull-up resistor R17, and the other end of the seventeenth pull-up resistor R17 is connected to 5V working power supply; pin 8 of the decoding chip IC7 and the tenth button S10, the eighteenth button S18, the twenty-sixth button S26, one end of the eighteenth pull-up resistor R18, one end of the nineteenth voltage dividing resistor R19, One end of the twenty-first voltage dividing resistor R20 is connected to one end of the twenty-first voltage dividing resistor R21, and the other end of the eighteenth pull-up resistor R18 is connected to a 5V working power supply; the other end of the nineteenth voltage dividing resistor R19 is connected to the second The other end of the ten-point resistor R20 and the other end of the twenty-first divider resistor R21 are grounded; the pin 36 of the decoding chip IC7 is connected to the third button S3, the fourth button S4, the fifth button S5, the sixth button S6, The other end of the seventh button S7, the eighth button S8, the ninth button S9 and the tenth button S10; the pin 35 of the decoding chip IC7 is connected to the eleventh button S11, the twelfth button S12, the thirteenth button S13, the Fourteenth button S14, fifteenth button S15, sixteenth button S16, seventeenth button S17 and eighteenth button S1 The other end of 8; pin 34 of the decoding chip IC7 is connected to the nineteenth button S19, the twentieth button S20, the twenty-first button S21, the twenty-second button S22, the twenty-third button S23, the twenty-fourth button The other end of the button S24, the twenty-fifth button S25 and the twenty-sixth button S26;

The temperature display module includes the first temperature display chip IC8A, the second temperature display chip IC8B; the digital tube DS1, the digital tube DS2, the digital tube DS3; the third temperature display chip IC9A, the fourth temperature display chip IC9B; the twenty-second pull-up Resistor R22, twenty-third pull-up resistor R23, twenty-fourth pull-up resistor R24, twenty-fifth pull-up resistor R25, twenty-sixth pull-up resistor R26, twenty-seventh pull-up resistor R27, second The eighteenth pull-up resistor R28, the twenty-ninth pull-up resistor R29; the twenty-seventh filter electrolytic capacitor C27, the twenty-eighth filter capacitor C28, the second time filter electrolytic capacitor C29, the thirtieth filter capacitor C30; the first The model of the temperature display chip IC8A is DS75451, the model of the second temperature display chip IC8B is DS75451, the model of the digital tube DS1 is CPS03211, the model of the digital tube DS2 is CPS03211, and the model of the digital tube DS3 is CPS03211;

The positive pole of the twenty-seventh filter electrolytic capacitor C27 and one end of the twenty-eighth filter capacitor C28 are connected to a 5V operating power supply, the negative pole of the twenty-seventh filter electrolytic capacitor C27 and the other end of the twenty-eighth filter capacitor C28 are grounded; the second The positive electrode of the nineteenth filter electrolytic capacitor C29 and one end of the thirtieth filter capacitor C30 are connected to the 5V working power supply, the negative electrode of the twenty-ninth filter electrolytic capacitor C29 and the other end of the thirtieth filter capacitor C30 are grounded; pin 1 of the chip IC9A is grounded , the 14 pins of the chip IC9A are connected to the 5V working power supply; the 1 pins of the chip IC9B are connected to the ground, the 14 pins of the chip IC9B are connected to the 5V working power supply; One end of the twenty-ninth pull-up resistor R29 is connected, and the other end of the twenty-ninth pull-up resistor R29 is connected to a 5V working power supply; pin 3 of the digital tube DS1, digital tube DS2, and digital tube DS3 are connected to pin 3 of the chip IC9A and the second One end of the eighteenth pull-up resistor R28 is connected, and the other end of the twenty-eighth pull-up resistor R28 is connected to a 5V working power supply; pin 2 of the digital tube DS1, digital tube DS2, and digital tube DS3 are connected to pin 4 of the chip IC9A and pin 20 One end of the seven pull-up resistor R27 is connected, and the other end of the twenty-seventh pull-up resistor R27 is connected to a 5V working power supply; pin 4 of the digital tube DS1, digital tube DS2, and digital tube DS3 are connected to pin 5 of the chip IC9A and pin 26 One end of the pull-up resistor R26 is connected, and the other end of the twenty-sixth pull-up resistor R26 is connected to a 5V working power supply; pin 5 of the digital tube DS1, digital tube DS2, and digital tube DS3 are connected to pin 2 of the chip IC9B and the twenty-fifth upper pin One end of the pull-up resistor R25 is connected, and the other end of the twenty-fifth pull-up resistor R25 is connected to a 5V working power supply; pin 8 of the digital tube DS1, digital tube DS2, and digital tube DS3 are connected to pin 3 of the chip IC9B and the twenty-fourth pull-up One end of the resistor R24 is connected, and the other end of the twenty-fourth pull-up resistor R24 is connected to a 5V working power supply; pin 9 of the digital tube DS1, digital tube DS2, and digital tube DS3 are connected to pin 4 of the chip IC9B and the twenty-third pull-up resistor One end of R23 is connected, and the other end of the twenty-third pull-up resistor R23 is connected to a 5V working power supply; pin 10 of the digital tube DS1, digital tube DS2, and digital tube DS3 are connected to pin 5 of the chip IC9B and the twenty-second pull-up resistor R22 One end of the twenty-second pull-up resistor R22 is connected to the 5V working power supply; pin 1 of the digital tube DS1 is connected to pin 6 and connected to pin 2 of the chip IC8A; pin 1 of the digital tube DS2 is connected to pin 6 and connected to Pin 4 of chip IC8A; pin 1 of digital tube DS3 is connected to pin 6 and pin 2 of chip IC8B; pin 5 of chip IC8A is connected to pin 1 of chip IC7; pin 5 of chip IC8B is connected to pin 8 of chip IC7.