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 the single-chip microcomputer infrared temperature measurement system, comprise power management module, control module, signal acquisition module, programmable interface module, scan operation module, temperature display module;

It is characterized in that: power management module comprises power management chip IC1, 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, 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,

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;

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.