CN102802279B - Over-distance wireless sensor network circuit receiving terminal - Google Patents
Over-distance wireless sensor network circuit receiving terminal Download PDFInfo
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- CN102802279B CN102802279B CN201210271708.1A CN201210271708A CN102802279B CN 102802279 B CN102802279 B CN 102802279B CN 201210271708 A CN201210271708 A CN 201210271708A CN 102802279 B CN102802279 B CN 102802279B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention discloses an over-distance wireless sensor network circuit which comprises a receiving terminal microcontroller, a receiving terminal minimum system periphery circuit, a receiving terminal antenna impedance matching circuit, a receiving terminal data storage circuit, a receiving terminal bugging interface circuit, a receiving terminal power supply voltage stabilizing circuit, a receiving terminal LED (Light Emitting Diode) interface circuit, a receiving terminal buzzer interface circuit and a receiving terminal RS232 serial interface circuit. The is strong in pertinence and is specially used in an over-distance wireless sensor communication network; and as an embedded microprocessor 430/868/915MHz three-section single wireless transceiving chip of an enhanced 51 kernel is adopted, the circuit is low in cost and good in performance, is ultra-low in energy consumption, and can be supplied with power through a battery.
Description
Technical field
The invention belongs to wireless technical field, be specifically related to a kind of overlength distance wireless sensor network circuit receiving terminal.
Background technology
Information age, the development of the communication technology mainly concentrates on broadband communications technologies and wireless communication technology two aspect.
Wireless sensor network technology (WSN, wireless sensor networks) is a kind of novel network communications technology that development in recent years is got up.It currently to receive much concern in the world, relates to the integrated hot research field, forward position of multidisciplinary height intersection, knowledge height.It is integrated with sensor technology, computer technology, the communication technology etc., can real-time perception, collection, various environment and monitoring target information in transmission and process network monitoring region.Wireless sensor network has the features such as cost is low, power consumption is little, easy realization, so have very wide application prospect, can be applied to the numerous areas such as military affairs, environment, medical treatment & health, automated production.
The wireless sensor network with perception, computing capability and communication capacity combines sensor technology, embedding people's formula computing technique, distributed information processing and the communication technology, can the information of various environment collaboratively in Real-Time Monitoring, perception and collection network distributed areas or monitoring target, and these information are processed, obtain detailed and information accurately, be sent to the user needing these information.
WSN, with minimum cost and maximum flexibility, connects any terminal equipment having communication requirement, image data, sends instruction.If each transducer of WSN or performance element equipment are considered as " bean or pea ", by one " bean or pea " (possibility 100, even thousands of grain) shed out arbitrarily, through limited " implantation time ", the information that just can obtain other any " bean or pea " from a certain grain " bean or pea " there organizes bidirectional communication network certainly as wireless, sensing network can complete the various transducer of irregular distribution and the networking of Controlling vertex automatically with maximum flexibility, has certain locomotivity and dynamic adjustment capability simultaneously.
Wireless sensor network is from sensor network, sensor network experienced by development course as shown in Figure 1, first generation sensor network appears at 20 century 70s, use the traditional sensors with simple information signal acquisition ability, adopt point-to-point transmission, connect sensing controler formation sensor network; Second generation sensor network, has the integration capability obtaining much information signal, adopts string, and interface (as R8-232, RS-485) and sensing controler are connected, and are configured with the sensor network of comprehensive much information; Third generation sensor network appears at the later stage nineties 20th century and the beginning of this century, with the transducer with intelligence acquisition much information signal, adopts fieldbus to connect sensing controler, forms LAN, become intellectualized sensor network; Forth generation sensor network is is researched and developed, the product that current shaping is also come into operation in a large number does not also occur, with a large amount of transducers with multi-functional multi information signal acquisition ability, adopts ad-hoc wireless access network, be connected with sensor network controller, form wireless sensor network.Wireless sensor network involved in the present invention just refers to forth generation sensor network.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, propose a kind of overlength distance wireless sensor network circuit receiving terminal.
The present invention solves the concrete technical scheme that its technical problem takes:
Complete overlength distance wireless sensor network circuit comprises receiving terminal and several transmitting terminals, and receiving terminal comprises receiving terminal microcontroller, receiving terminal minimum system peripheral circuit, receiving terminal antenna impedance matching, receiving terminal data storage circuitry, receiving terminal debug i/f circuit, receiving terminal power supply stabilization circuit, receiving terminal LED interface circuit, receiving terminal buzzer interface circuit, receiving terminal RS232 serial interface circuit.Transmitting terminal comprises transmitting terminal microcontroller, transmitting terminal minimum system peripheral circuit, transmitting terminal antenna impedance matching, transmitting terminal data storage circuitry, transmitting terminal debug i/f circuit, Temperature Humidity Sensor circuit, transmitting terminal power supply stabilization circuit, transmitting terminal LED interface circuit, transmitting terminal buzzer interface circuit, relay interface circuit.When overlength distance wireless sensor network transmitting terminal circuit working, transmitting terminal microcontroller is processed by the data constantly reading Temperature Humidity Sensor, then analog data signal is sent out by impedance antenna, detect humiture with or without the scope exceeding setting simultaneously, exceed if having, then reported to the police by buzzer.
Described receiving terminal microcontroller and transmitting terminal micro controller all adopt the model of Nordic VLSI company to be the chip of nRF9E5.
Overlength distance wireless sensor network receiving terminal comprises receiving terminal microcontroller, receiving terminal minimum system peripheral circuit, receiving terminal antenna impedance matching, receiving terminal data storage circuitry, receiving terminal debug i/f circuit, receiving terminal power supply stabilization circuit, receiving terminal LED interface circuit, receiving terminal buzzer interface circuit, receiving terminal RS232 serial interface circuit.
Receiving terminal minimum system peripheral circuit comprises the reference current pin AREF that outside provides, microcontroller U1, the first crystal oscillator build-out resistor R1, second current-limiting resistance R2, the 3rd current-limiting resistance R3, the first crystal oscillator matching capacitance C1, second crystal oscillator matching capacitance C2, the 4th filter capacitor C4, the 5th filter capacitor C5,6th filter capacitor C6,7th filter capacitor C7, the 8th filter capacitor C8, the 9th filter capacitor C9, the passive crystal oscillator X1 of tenth filter capacitor C10,16MHZ, the model of described microcontroller U1 is nRF9E5, the one end of the reference current pin AREF that outside provides is connected with one end of the 3rd current-limiting resistance R3, the other end of the 3rd current-limiting resistance R3 and one end of the 9th filter capacitor C9, one end of tenth filter capacitor C10, 30 pin of micro controller U1 connect, the other end of the 9th filter capacitor C9 and the other end ground connection of the tenth filter capacitor C10, 4 pin of microcontroller U1 are connected with one end of the 8th filter capacitor C8 and are connected with power supply VCC, 5 pin of microcontroller U1 are connected with the other end of the 8th filter capacitor C8 and ground connection, one end of 14 pin of microcontroller U1 and the passive crystal oscillator X1 of 16MHZ, one end of first crystal oscillator build-out resistor R1, one end of first crystal oscillator matching capacitance C1 connects, the other end of 15 pin of microcontroller U1 and the passive crystal oscillator X1 of 16MHZ, the other end of the first crystal oscillator build-out resistor R1, one end of second crystal oscillator matching capacitance C2 connects, the other end grounding connection of the first crystal oscillator matching capacitance C1, the other end grounding connection of the second crystal oscillator matching capacitance C2, 16 pin of microcontroller U1 and 18 pin, 22 pin, 24 pin, grounding connection, 17 pin of microcontroller U1 are connected with power supply VCC, 19 pin of microcontroller U1 are connected with one end of the 4th filter capacitor C4, the other end grounding connection of the 4th filter capacitor C4, 23 pin of microcontroller U1 are connected with one end of the second current-limiting resistance R2, the other end grounding connection of the second current-limiting resistance R2, 25 pin of microcontroller U1 and power supply VCC, one end of 5th filter capacitor C5, one end of 6th filter capacitor C6 connects, the other end ground connection of the 5th filter capacitor C5 and the other end grounding connection of the 6th filter capacitor C6, 31 pin of microcontroller U1 are connected with one end of the 7th filter capacitor C7, the other end grounding connection of the 7th filter capacitor C7,
Receiving terminal antenna impedance matching comprises the 3rd impedance matching capacitances C3, first impedance matching inductance L 1, second impedance matching inductance L the 2, three impedance matching inductance L the 3, the 13 impedance matching capacitances C13,14 impedance matching capacitances C14,25 filter capacitor C25, the 26 filter capacitor C26, the 15 filter capacitor C15,12 filter capacitor C12,50 Europe impedance matching antennal interfaces.21 pin of microcontroller U1 and one end of the 3rd impedance matching capacitances C3, one end of 25 filter capacitor C25, one end of first impedance matching inductance L 1 is connected with one end of the second impedance matching inductance L 2, 20 pin of microcontroller U1 and the other end of the 3rd impedance matching capacitances C3, one end of 26 filter capacitor C26, the other end of the first impedance matching inductance L 1 is connected with one end of the 3rd impedance matching inductance L 3, the other end of the 25 filter capacitor C25 and the other end grounding connection of the 26 filter capacitor C26, the other end of the second impedance matching inductance L 2 is connected with one end of the 13 impedance matching capacitances C13, the other end of the 13 impedance matching capacitances C13 is connected with one end of one end of the 12 filter capacitor C12 and 50 Europe impedance matching antennal interfaces, the other end grounding connection of the 12 filter capacitor C12, the other end of the 3rd impedance matching inductance L 3 is connected with one end of the 15 filter capacitor C15 and one end of the 14 impedance matching capacitances C14, the other end grounding connection of the 15 filter capacitor C15, the other end grounding connection of the 14 impedance matching capacitances C14,
Receiving terminal data storage circuitry comprises storage chip U2, the 5th resistance R5, the 4th resistance R4, the 11 filter capacitor C11.Described storage chip U2 model is 25LC320, 1 pin of storage chip U2 is connected with 13 pin of microcontroller U1, 2 pin of storage chip U2 are connected with 11 pin of microcontroller U1, 6 pin of storage chip U2 are connected with 12 pin of microcontroller U1, 5 pin of storage chip U2 are connected with 10 pin of microcontroller U1, 8 pin of storage chip U2 and power supply VCC, 4th resistance R4 one end is connected with one end of the 11 filter capacitor C11, the two ends of the 5th resistance R5 are connected with 3 pin of storage chip U2 and 4 pin, the 4 pin grounding connections of storage chip U2, the 4th resistance R4 other end is connected with 7 pin of storage chip U2, the other end grounding connection of the 11 filter capacitor C11,
Receiving terminal debug i/f circuit comprises 5X2 and arranges pin JP1, and a 9X1 arranges pin J1, and the 2nd 9X1 arranges pin J2.1 pin that 5X2 arranges pin JP1 is connected with 10 pin of microcontroller U1,2 pin that 5X2 arranges pin JP1 connect power supply, 5 foot rests that 5X2 arranges pin JP1 are empty, 7 pin that 5X2 arranges pin JP1 are connected with 12 pin of microcontroller U1,9 pin that 5X2 arranges pin JP1 are connected with 11 pin of microcontroller U1, and 5X2 arranges 4 pin, 6 pin, 8 pin, the equal grounding connection of 10 pin of pin JP1.1 pin that one 9X1 arranges pin J1 connects power supply, 2 pin that one 9X1 arranges pin J1 are connected with 32 pin of microcontroller U1, 3 pin that one 9X1 arranges pin J1 are connected with 1 pin of microcontroller U1, 4 pin that one 9X1 arranges pin J1 are connected with 2 pin of microcontroller U1, 5 pin that one 9X1 arranges pin J1 are connected with 3 pin of microcontroller U1, 6 pin that one 9X1 arranges pin J1 are connected with 6 pin of microcontroller U1, 7 pin that one 9X1 arranges pin J1 are connected with 7 pin of microcontroller U1, 8 pin that one 9X1 arranges pin J1 are connected with 8 pin of microcontroller U1, 9 pin that one 9X1 arranges pin J1 are connected with 9 pin of microcontroller U1, 2nd 9X1 arranges the 1 pin ground connection of pin J2, 2 pin that 2nd 9X1 arranges pin J2 are connected with 13 pin of microcontroller U1, 3 pin that 2nd 9X1 arranges pin J2 are connected with 12 pin of microcontroller U1, 4 pin that 2nd 9X1 arranges pin J2 are connected with 11 pin of microcontroller U1, 5 pin that 2nd 9X1 arranges pin J2 are connected with 10 pin of microcontroller U1, 6 pin that 2nd 9X1 arranges pin J2 are connected with 26 pin of microcontroller U1, 7 pin that 2nd 9X1 arranges pin J2 are connected with 27 pin of microcontroller U1, 8 pin that 2nd 9X1 arranges pin J2 are connected with 28 pin of microcontroller U1, 9 pin that 2nd 9X1 arranges pin J2 are connected with 29 pin of microcontroller U1.
Receiving terminal power supply stabilization circuit comprises USBJ3, single-pole single-throw switch (SPST) S2, single-pole double-throw switch (SPDT) S1, fuse F, the 24 electrolytic capacitor filter C24,23 filter capacitor C23, general-purpose diode D3, voltage stabilizing chip U3, the 21 electrolytic capacitor filter C21,22 filter capacitor C22, battery J5.The model of described voltage stabilizing chip U3 is the model of 3.3V voltage stabilizing chip AMS1117, general-purpose diode D3 is 1N4007.USBJ3 first pin grounding connection, USBJ3 second pin is connected with one end of single-pole single-throw switch (SPST) S2, the other end of single-pole single-throw switch (SPST) S2 is connected with one end of fuse F, the other end of fuse F and 1 pin of voltage stabilizing chip U3, the positive pole of the 24 electrolytic capacitor filter C24 and one end of the 23 filter capacitor C23 connect, the minus earth of the 24 electrolytic capacitor filter C24 connects, the other end grounding connection of the 23 filter capacitor C23, 2 pin of voltage stabilizing chip U3 are connected with the anode of general-purpose diode D3, the minus earth of general-purpose diode D3 connects, 3 pin of voltage stabilizing chip U3 and the positive pole of the 21 electrolytic capacitor filter C21, one end of 22 filter capacitor C22 and a joint of single-pole double-throw switch (SPDT) S1 connect, 21 electrolytic capacitor filter C21 minus earth connects, the other end grounding connection of the 22 filter capacitor C22, the another one joint of single-pole double-throw switch (SPDT) S1 is connected with the positive pole of battery J5, the minus earth of battery J5 connects, the movable termination power VCC of single-pole double-throw switch (SPDT) S1,
Receiving terminal LED interface circuit comprises the first Light-Emitting Diode D1, second Light-Emitting Diode D2,4th Light-Emitting Diode D4,5th Light-Emitting Diode D5, the 6th Light-Emitting Diode D6, the 7th current-limiting resistance R7,8th current-limiting resistance R8,11 current-limiting resistance R11, the 14 current-limiting resistance R14, the 15 current-limiting resistance R15.The anode of the first Light-Emitting Diode D1 is connected with the anode of the second Light-Emitting Diode D2 and meets power supply VCC, the negative electrode of the first Light-Emitting Diode D1 is connected with one end of the 7th current-limiting resistance R7, the other end of the 7th current-limiting resistance R7 is connected with 1 pin of microcontroller U1, the negative electrode of the second Light-Emitting Diode D2 is connected with one end of the 8th current-limiting resistance R8, the other end of the 8th current-limiting resistance R8 is connected with 2 pin of microcontroller U1, the anode of the 4th Light-Emitting Diode D4 meets power supply VCC, the negative electrode of the 4th Light-Emitting Diode D4 is connected with one end of the 11 current-limiting resistance R11, the other end grounding connection of the 11 current-limiting resistance R11, the anode of the 5th Light-Emitting Diode D5 is connected with the anode of the 6th Light-Emitting Diode D6 and meets power supply VCC, the negative electrode of the 5th Light-Emitting Diode D5 is connected with one end of the 14 current-limiting resistance R14, the other end of the 14 current-limiting resistance R14 is connected with 7 pin of microcontroller U1, the negative electrode of the 6th Light-Emitting Diode D6 is connected with one end of the 15 current-limiting resistance R15, the other end of the 15 current-limiting resistance R15 is connected with 8 pin of microcontroller U1,
Receiving terminal buzzer interface circuit comprises buzzer U4, NPN triode Q, the 13 current-limiting resistance R13.The positive pole of buzzer U4 meets power supply VCC, the negative pole of buzzer U4 is connected with the collector electrode of NPN triode Q, the grounded emitter of NPN triode Q, the base stage of NPN triode Q is connected with one end of the 13 current-limiting resistance R13, and the other end of the 13 current-limiting resistance R13 is connected with 3 pin of microcontroller U1;
Receiving terminal RS232 serial interface circuit comprises physical chip U6, the 16 filter capacitor C16, the 17 multiplication of voltage charge pump capacitor C17, tenth octuple pressure charge pump capacitor C18,19 filter capacitor C19, the 20 filter capacitor C20, RS232 interface circuit 9 needle interface DB9, the model of described physical chip U6 is MAX3232, the positive pole of the 17 multiplication of voltage charge pump capacitor C17 is connected with 1 pin of physical chip U6, the negative pole of the 17 multiplication of voltage charge pump capacitor C17 is connected with 3 pin of physical chip U6, the positive pole of the 16 filter capacitor C16 is connected with 2 pin of physical chip U6, the minus earth of the 16 filter capacitor C16, the tenth octuple pressure positive pole of charge pump capacitor C18 is connected with 4 pin of physical chip U6, the tenth octuple pressure negative pole of charge pump capacitor C18 is connected with 5 pin of physical chip U6, the negative pole of the 19 filter capacitor C19 is connected with 6 pin of physical chip U6, the plus earth of the 19 filter capacitor C19, 9 pin of physical chip U6 are connected with 1 pin of microcontroller U1, 10 pin of physical chip U6 are connected with 2 pin of microcontroller U1, 8 pin of physical chip U6 are connected with 3 pin of RS232 interface circuit 9 needle interface DB9, 7 pin of physical chip U6 are connected with 2 pin of RS232 interface circuit 9 needle interface DB9, 15 pin of physical chip U6, one end ground connection of the 20 filter capacitor C20, 16 pin of physical chip U6, another termination power VCC of the 20 filter capacitor C20, the 9 pin ground connection of RS232 interface circuit 9 needle interface DB9, 11 pin of physical chip U6, 12 pin, 13 pin, 14 pin are unsettled, 1 pin of RS232 interface circuit 9 needle interface DB9, 4 pin, 5 pin, 6 pin, 7 pin, 8 pin are unsettled.
Beneficial effect of the present invention:
(1) with strong points, be specifically designed to remote-wireless sensor communication network;
(2) adopt embedding microprocessor 430/868/915MHz tri-sections of single-chip transceiver chips of enhancement mode 51 kernel, cost is low, and performance is good;
(3) super low-power consumption, can powered battery.
Accompanying drawing explanation
Fig. 1 is the developing history of wireless sensor network;
Fig. 2 is the structural representation of complete overlength distance wireless sensor network;
Fig. 3 is circuit module schematic diagram of the present invention;
Fig. 4 is the circuit diagram of receiving terminal minimum system peripheral circuit;
Fig. 5 is the circuit diagram of receiving terminal antenna impedance matching;
Fig. 6 is the circuit diagram of receiving terminal data storage circuitry;
Fig. 7 is the circuit diagram of receiving terminal debug i/f circuit;
Fig. 8 is the circuit diagram of receiving terminal power supply stabilization circuit;
Fig. 9 is the circuit diagram of receiving terminal LED interface circuit;
Figure 10 is the circuit diagram of receiving terminal buzzer interface circuit;
Figure 11 is the circuit diagram of RS232 serial interface circuit.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 2, complete overlength distance wireless sensor network circuit comprises receiving terminal and several transmitting terminals, and receiving terminal comprises receiving terminal microcontroller 1-9, receiving terminal minimum system peripheral circuit 1-1, receiving terminal antenna impedance matching 1-2, receiving terminal data storage circuitry 1-3, receiving terminal debug i/f circuit 1-4, receiving terminal power supply stabilization circuit 1-5, receiving terminal LED interface circuit 1-6, receiving terminal buzzer interface circuit 1-7, receiving terminal RS232 serial interface circuit 1-8.Transmitting terminal comprises transmitting terminal microcontroller 2-10, transmitting terminal minimum system peripheral circuit 2-1, transmitting terminal antenna impedance matching 2-2, transmitting terminal data storage circuitry 2-3, transmitting terminal debug i/f circuit 2-4, Temperature Humidity Sensor circuit 2-5, transmitting terminal power supply stabilization circuit 2-6, transmitting terminal LED interface circuit 2-7, transmitting terminal buzzer interface circuit 2-8, relay interface circuit 2-9.When overlength distance wireless sensor network transmitting terminal circuit working, transmitting terminal microcontroller is processed by the data constantly reading Temperature Humidity Sensor, then analog data signal is sent out by impedance antenna, detect humiture with or without the scope exceeding setting simultaneously, exceed if having, then reported to the police by buzzer.
Described receiving terminal microcontroller and transmitting terminal micro controller all adopt the model of Nordic VLSI company to be the chip of nRF9E5.
As shown in Figure 3, overlength distance wireless sensor network receiving terminal comprises receiving terminal microcontroller 1-9, receiving terminal minimum system peripheral circuit 1-1, receiving terminal antenna impedance matching 1-2, receiving terminal data storage circuitry 1-3, receiving terminal debug i/f circuit 1-4, receiving terminal power supply stabilization circuit 1-5, receiving terminal LED interface circuit 1-6, receiving terminal buzzer interface circuit 1-7, receiving terminal RS232 serial interface circuit 1-8.
As shown in Figure 4, receiving terminal minimum system peripheral circuit 1-1 comprises the reference current pin AREF that outside provides, microcontroller U1, first crystal oscillator build-out resistor R1, the second current-limiting resistance R2, the 3rd current-limiting resistance R3, first crystal oscillator matching capacitance C1, the second crystal oscillator matching capacitance C2, the 4th filter capacitor C4,5th filter capacitor C5, the 6th filter capacitor C6, the 7th filter capacitor C7,8th filter capacitor C8,9th filter capacitor C9, the passive crystal oscillator X1 of the tenth filter capacitor C10,16MHZ, the model of described microcontroller U1 is nRF9E5, the one end of the reference current pin AREF that outside provides is connected with one end of the 3rd current-limiting resistance R3, the other end of the 3rd current-limiting resistance R3 and one end of the 9th filter capacitor C9, one end of tenth filter capacitor C10, 30 pin of micro controller U1 connect, the other end of the 9th filter capacitor C9 and the other end ground connection of the tenth filter capacitor C10, 4 pin of microcontroller U1 are connected with one end of the 8th filter capacitor C8 and are connected with power supply VCC, 5 pin of microcontroller U1 are connected with the other end of the 8th filter capacitor C8 and ground connection, one end of 14 pin of microcontroller U1 and the passive crystal oscillator X1 of 16MHZ, one end of first crystal oscillator build-out resistor R1, one end of first crystal oscillator matching capacitance C1 connects, the other end of 15 pin of microcontroller U1 and the passive crystal oscillator X1 of 16MHZ, the other end of the first crystal oscillator build-out resistor R1, one end of second crystal oscillator matching capacitance C2 connects, the other end grounding connection of the first crystal oscillator matching capacitance C1, the other end grounding connection of the second crystal oscillator matching capacitance C2, 16 pin of microcontroller U1 and 18 pin, 22 pin, 24 pin, grounding connection, 17 pin of microcontroller U1 are connected with power supply VCC, 19 pin of microcontroller U1 are connected with one end of the 4th filter capacitor C4, the other end grounding connection of the 4th filter capacitor C4, 23 pin of microcontroller U1 are connected with one end of the second current-limiting resistance R2, the other end grounding connection of the second current-limiting resistance R2, 25 pin of microcontroller U1 and power supply VCC, one end of 5th filter capacitor C5, one end of 6th filter capacitor C6 connects, the other end ground connection of the 5th filter capacitor C5 and the other end grounding connection of the 6th filter capacitor C6, 31 pin of microcontroller U1 are connected with one end of the 7th filter capacitor C7, the other end grounding connection of the 7th filter capacitor C7, microcontroller U1 reads humiture data by 6 pin constantly from microcontroller U1 by Temperature Humidity Sensor, then after data processing, export analog and digital signal from artificial antenna delivery outlet 20 pin of microcontroller U1,21 pin, send out humiture data through receiving terminal antenna impedance matching 1-2 via 50 Europe impedance antenna interfaces.
As shown in Figure 5, receiving terminal antenna impedance matching 1-2 comprises the 3rd impedance matching capacitances C3, the first impedance matching inductance L 1, second impedance matching inductance L 2,3rd impedance matching inductance L 3,13 impedance matching capacitances C13, the 14 impedance matching capacitances C14, the 25 filter capacitor C25,26 filter capacitor C26,15 filter capacitor C15, the 12 filter capacitor C12,50 Europe impedance matching antennal interfaces.21 pin of microcontroller U1 and one end of the 3rd impedance matching capacitances C3, one end of 25 filter capacitor C25, one end of first impedance matching inductance L 1 is connected with one end of the second impedance matching inductance L 2, 20 pin of microcontroller U1 and the other end of the 3rd impedance matching capacitances C3, one end of 26 filter capacitor C26, the other end of the first impedance matching inductance L 1 is connected with one end of the 3rd impedance matching inductance L 3, the other end of the 25 filter capacitor C25 and the other end grounding connection of the 26 filter capacitor C26, the other end of the second impedance matching inductance L 2 is connected with one end of the 13 impedance matching capacitances C13, the other end of the 13 impedance matching capacitances C13 is connected with one end of one end of the 12 filter capacitor C12 and 50 Europe impedance matching antennal interfaces, the other end grounding connection of the 12 filter capacitor C12, the other end of the 3rd impedance matching inductance L 3 is connected with one end of the 15 filter capacitor C15 and one end of the 14 impedance matching capacitances C14, the other end grounding connection of the 15 filter capacitor C15, the other end grounding connection of the 14 impedance matching capacitances C14,
As shown in Figure 6, receiving terminal data storage circuitry 1-3 comprises storage chip U2, the 5th resistance R5, the 4th resistance R4, the 11 filter capacitor C11.Described storage chip U2 model is 25LC320, 1 pin of storage chip U2 is connected with 13 pin of microcontroller U1, 2 pin of storage chip U2 are connected with 11 pin of microcontroller U1, 6 pin of storage chip U2 are connected with 12 pin of microcontroller U1, 5 pin of storage chip U2 are connected with 10 pin of microcontroller U1, 8 pin of storage chip U2 and power supply VCC, 4th resistance R4 one end is connected with one end of the 11 filter capacitor C11, the two ends of the 5th resistance R5 are connected with 3 pin of storage chip U2 and 4 pin, the 4 pin grounding connections of storage chip U2, the 4th resistance R4 other end is connected with 7 pin of storage chip U2, the other end grounding connection of the 11 filter capacitor C11, receiving terminal data storage circuitry 1-3 follows SPI protocol, for storing the program of receiving terminal microcontroller.
As shown in Figure 7, receiving terminal debug i/f circuit 1-4 comprises 5X2 and arranges pin JP1, and a 9X1 arranges pin J1, and the 2nd 9X1 arranges pin J2.1 pin that 5X2 arranges pin JP1 is connected with 10 pin of microcontroller U1,2 pin that 5X2 arranges pin JP1 connect power supply, 5 foot rests that 5X2 arranges pin JP1 are empty, 7 pin that 5X2 arranges pin JP1 are connected with 12 pin of microcontroller U1,9 pin that 5X2 arranges pin JP1 are connected with 11 pin of microcontroller U1, and 5X2 arranges 4 pin, 6 pin, 8 pin, the equal grounding connection of 10 pin of pin JP1.1 pin that one 9X1 arranges pin J1 connects power supply, 2 pin that one 9X1 arranges pin J1 are connected with 32 pin of microcontroller U1, 3 pin that one 9X1 arranges pin J1 are connected with 1 pin of microcontroller U1, 4 pin that one 9X1 arranges pin J1 are connected with 2 pin of microcontroller U1, 5 pin that one 9X1 arranges pin J1 are connected with 3 pin of microcontroller U1, 6 pin that one 9X1 arranges pin J1 are connected with 6 pin of microcontroller U1, 7 pin that one 9X1 arranges pin J1 are connected with 7 pin of microcontroller U1, 8 pin that one 9X1 arranges pin J1 are connected with 8 pin of microcontroller U1, 9 pin that one 9X1 arranges pin J1 are connected with 9 pin of microcontroller U1, 2nd 9X1 arranges the 1 pin ground connection of pin J2, 2 pin that 2nd 9X1 arranges pin J2 are connected with 13 pin of microcontroller U1, 3 pin that 2nd 9X1 arranges pin J2 are connected with 12 pin of microcontroller U1, 4 pin that 2nd 9X1 arranges pin J2 are connected with 11 pin of microcontroller U1, 5 pin that 2nd 9X1 arranges pin J2 are connected with 10 pin of microcontroller U1, 6 pin that 2nd 9X1 arranges pin J2 are connected with 26 pin of microcontroller U1, 7 pin that 2nd 9X1 arranges pin J2 are connected with 27 pin of microcontroller U1, 8 pin that 2nd 9X1 arranges pin J2 are connected with 28 pin of microcontroller U1, 9 pin that 2nd 9X1 arranges pin J2 are connected with 29 pin of microcontroller U1.Receiving terminal debug i/f circuit 1-4 have employed the interface of JTAG, is convenient to artificial debugging, all usable pins of receiving terminal microcontroller is all drawn simultaneously, is convenient to hardware debug.
As shown in Figure 8, receiving terminal power supply stabilization circuit 1-5 comprises USBJ3, single-pole single-throw switch (SPST) S2, single-pole double-throw switch (SPDT) S1, fuse F, 24 electrolytic capacitor filter C24, the 23 filter capacitor C23, general-purpose diode D3, voltage stabilizing chip U3,21 electrolytic capacitor filter C21, the 22 filter capacitor C22, battery J5.The model of described voltage stabilizing chip U3 is the model of 3.3V voltage stabilizing chip AMS1117, general-purpose diode D3 is 1N4007.USBJ3 first pin grounding connection, USBJ3 second pin is connected with one end of single-pole single-throw switch (SPST) S2, the other end of single-pole single-throw switch (SPST) S2 is connected with one end of fuse F, the other end of fuse F and 1 pin of voltage stabilizing chip U3, the positive pole of the 24 electrolytic capacitor filter C24 and one end of the 23 filter capacitor C23 connect, the minus earth of the 24 electrolytic capacitor filter C24 connects, the other end grounding connection of the 23 filter capacitor C23, 2 pin of voltage stabilizing chip U3 are connected with the anode of general-purpose diode D3, the minus earth of general-purpose diode D3 connects, 3 pin of voltage stabilizing chip U3 and the positive pole of the 21 electrolytic capacitor filter C21, one end of 22 filter capacitor C22 and a joint of single-pole double-throw switch (SPDT) S1 connect, 21 electrolytic capacitor filter C21 minus earth connects, the other end grounding connection of the 22 filter capacitor C22, the another one joint of single-pole double-throw switch (SPDT) S1 is connected with the positive pole of battery J5, the minus earth of battery J5 connects, the movable termination power VCC of single-pole double-throw switch (SPDT) S1, voltage stabilizing chip U3 is that stable 3.3V voltage exports to microcontroller U1 the 5V photovoltaic conversion of USBJ3 mouth, and this circuit also provides battery J5 to supply the voltage of 3.3V simultaneously.
As shown in Figure 9, receiving terminal LED interface circuit 1-6 comprises the first Light-Emitting Diode D1, second Light-Emitting Diode D2, the 4th Light-Emitting Diode D4, the 5th Light-Emitting Diode D5,6th Light-Emitting Diode D6,7th current-limiting resistance R7, the 8th current-limiting resistance R8, the 11 current-limiting resistance R11,14 current-limiting resistance R14, the 15 current-limiting resistance R15.The anode of the first Light-Emitting Diode D1 is connected with the anode of the second Light-Emitting Diode D2 and meets power supply VCC, the negative electrode of the first Light-Emitting Diode D1 is connected with one end of the 7th current-limiting resistance R7, the other end of the 7th current-limiting resistance R7 is connected with 1 pin of microcontroller U1, the negative electrode of the second Light-Emitting Diode D2 is connected with one end of the 8th current-limiting resistance R8, the other end of the 8th current-limiting resistance R8 is connected with 2 pin of microcontroller U1, the anode of the 4th Light-Emitting Diode D4 meets power supply VCC, the negative electrode of the 4th Light-Emitting Diode D4 is connected with one end of the 11 current-limiting resistance R11, the other end grounding connection of the 11 current-limiting resistance R11, the anode of the 5th Light-Emitting Diode D5 is connected with the anode of the 6th Light-Emitting Diode D6 and meets power supply VCC, the negative electrode of the 5th Light-Emitting Diode D5 is connected with one end of the 14 current-limiting resistance R14, the other end of the 14 current-limiting resistance R14 is connected with 7 pin of microcontroller U1, the negative electrode of the 6th Light-Emitting Diode D6 is connected with one end of the 15 current-limiting resistance R15, the other end of the 15 current-limiting resistance R15 is connected with 8 pin of microcontroller U1,
As shown in Figure 10, receiving terminal buzzer interface circuit 1-7 comprises buzzer U4, NPN triode Q, the 13 current-limiting resistance R13.The positive pole of buzzer U4 meets power supply VCC, the negative pole of buzzer U4 is connected with the collector electrode of NPN triode Q, the grounded emitter of NPN triode Q, the base stage of NPN triode Q is connected with one end of the 13 current-limiting resistance R13, and the other end of the 13 current-limiting resistance R13 is connected with 3 pin of microcontroller U1;
As shown in figure 11, receiving terminal RS232 serial interface circuit 1-8 comprises physical chip U6,16 filter capacitor C16,17 multiplication of voltage charge pump capacitor C17, tenth octuple pressure charge pump capacitor C18,19 filter capacitor C19, the 20 filter capacitor C20, RS232 interface circuit 9 needle interface DB9, the model of described physical chip U6 is MAX3232, the positive pole of the 17 multiplication of voltage charge pump capacitor C17 is connected with 1 pin of physical chip U6, the negative pole of the 17 multiplication of voltage charge pump capacitor C17 is connected with 3 pin of physical chip U6, the positive pole of the 16 filter capacitor C16 is connected with 2 pin of physical chip U6, the minus earth of the 16 filter capacitor C16, the tenth octuple pressure positive pole of charge pump capacitor C18 is connected with 4 pin of physical chip U6, the tenth octuple pressure negative pole of charge pump capacitor C18 is connected with 5 pin of physical chip U6, the negative pole of the 19 filter capacitor C19 is connected with 6 pin of physical chip U6, the plus earth of the 19 filter capacitor C19, 9 pin of physical chip U6 are connected with 1 pin of microcontroller U1, 10 pin of physical chip U6 are connected with 2 pin of microcontroller U1, 8 pin of physical chip U6 are connected with 3 pin of RS232 interface circuit 9 needle interface DB9, 7 pin of physical chip U6 are connected with 2 pin of RS232 interface circuit 9 needle interface DB9, 15 pin of physical chip U6, one end ground connection of the 20 filter capacitor C20, 16 pin of physical chip U6, another termination power VCC of the 20 filter capacitor C20, the 9 pin ground connection of RS232 interface circuit 9 needle interface DB9, 11 pin of physical chip U6, 12 pin, 13 pin, 14 pin are unsettled, 1 pin of RS232 interface circuit 9 needle interface DB9, 4 pin, 5 pin, 6 pin, 7 pin, 8 pin are unsettled.17 multiplication of voltage charge pump capacitor C17 adopts the X7R electric capacity of 1 μ F/50V, 16 filter capacitor C16 adopts the X7R electric capacity of 0.1 μ F/50V, for carrying out filtering to physical chip U6 power supply, tenth octuple pressure charge pump capacitor C18 adopts the X7R electric capacity of 1 μ F/50V, 19 filter capacitor C19 adopts the X7R electric capacity of 0.1 μ F/50V, for carrying out filtering to physical chip U6 power supply, 20 filter capacitor C20 adopts the X7R electric capacity of 0.1 μ F/50V, be used for carrying out filtering to RS232 interface power part, receiving terminal RS232 serial ports line interface circuit is used for receiving terminal microcontroller and host computer carries out transfer of data.
The course of work of the present invention is: single-pole single-throw switch (SPST) S2 closes and the one end to voltage stabilizing chip U3 thrown by single-pole double-throw switch (SPDT) time, 3.3V power supply starts to power to receiving terminal microcontroller, receiving terminal pin-saving chip, receiving terminal light-emitting diode, receiving terminal buzzer, receiving terminal RS232 transceiver.Receiving terminal microcontroller U1 powers on, light-emitting diode D4 is luminous simultaneously, instruction powers on successfully, microcontroller U1 Program brings into operation, after the module initialization of receiving terminal microcontroller completes, receiving terminal microcontroller is by constantly accepting the valid data sended over from transmitting terminal microcontroller, then process, when the data changed out meet certain agreement time, by corresponding agreement, analog signal is converted to digital signal, then the humiture data after process are sent to PC by receiving terminal RS232 transceiver from serial ports, receiving terminal microcontroller U1 sends over control command by interrupting detecting whether having from PC end simultaneously, when sending over control command from PC end and meeting certain agreement, be then corresponding data message instruction transformation, then data are outputted to 50 Europe impedance antenna by the artificial antenna output pin of receiving terminal microcontroller U1 through receiving-end impedance match circuit and send out control command data message, thus realize PC end controls humiture in real time to transmitting terminal change by receiving terminal transmission instruction.
Claims (1)
1. an overlength distance wireless sensor network circuit receiving terminal, is characterized in that: comprise receiving terminal microcontroller, receiving terminal minimum system peripheral circuit, receiving terminal antenna impedance matching, receiving terminal data storage circuitry, receiving terminal debug i/f circuit, receiving terminal power supply stabilization circuit, receiving terminal LED interface circuit, receiving terminal buzzer interface circuit and receiving terminal RS232 serial interface circuit; Described receiving terminal microcontroller adopts the model of Nordic VLSI company to be the chip of nRF9E5,
Receiving terminal minimum system peripheral circuit comprises the reference current pin AREF that outside provides, microcontroller U1, the first crystal oscillator build-out resistor R1, second current-limiting resistance R2, the 3rd current-limiting resistance R3, the first crystal oscillator matching capacitance C1, second crystal oscillator matching capacitance C2,4th filter capacitor C4, the 5th filter capacitor C5, the 6th filter capacitor C6,7th filter capacitor C7,8th filter capacitor C8, the 9th filter capacitor C9, the passive crystal oscillator X1 of the tenth filter capacitor C10 and 16MHZ, the model of described microcontroller U1 is nRF9E5, the one end of the reference current pin AREF that outside provides is connected with one end of the 3rd current-limiting resistance R3, the other end of the 3rd current-limiting resistance R3 and one end of the 9th filter capacitor C9, one end of tenth filter capacitor C10 is connected with 30 pin of micro controller U1, the other end of the 9th filter capacitor C9 and the other end ground connection of the tenth filter capacitor C10, 4 pin of microcontroller U1 are connected with one end of the 8th filter capacitor C8 and are connected with power supply VCC, 5 pin of microcontroller U1 are connected with the other end of the 8th filter capacitor C8 and ground connection, one end of 14 pin of microcontroller U1 and the passive crystal oscillator X1 of 16MHZ, one end of first crystal oscillator build-out resistor R1 is connected with one end of the first crystal oscillator matching capacitance C1, the other end of 15 pin of microcontroller U1 and the passive crystal oscillator X1 of 16MHZ, the other end of the first crystal oscillator build-out resistor R1 is connected with one end of the second crystal oscillator matching capacitance C2, the other end grounding connection of the first crystal oscillator matching capacitance C1, the other end grounding connection of the second crystal oscillator matching capacitance C2, 16 pin of microcontroller U1 and 18 pin, 22 pin, 24 pin, grounding connection, 17 pin of microcontroller U1 are connected with power supply VCC, 19 pin of microcontroller U1 are connected with one end of the 4th filter capacitor C4, the other end grounding connection of the 4th filter capacitor C4, 23 pin of microcontroller U1 are connected with one end of the second current-limiting resistance R2, the other end grounding connection of the second current-limiting resistance R2, 25 pin of microcontroller U1 and power supply VCC, one end of 5th filter capacitor C5 is connected with one end of the 6th filter capacitor C6, the other end of the 5th filter capacitor C5 and the other end grounding connection of the 6th filter capacitor C6, 31 pin of microcontroller U1 are connected with one end of the 7th filter capacitor C7, the other end grounding connection of the 7th filter capacitor C7,
Receiving terminal antenna impedance matching comprises the 3rd impedance matching capacitances C3, first impedance matching inductance L 1, second impedance matching inductance L 2,3rd impedance matching inductance L the 3, the 13 impedance matching capacitances C13, the 14 impedance matching capacitances C14,25 filter capacitor C25,26 filter capacitor C26, the 15 filter capacitor C15, the 12 filter capacitor C12 and 50 Europe impedance matching antennal interfaces, 21 pin of microcontroller U1 and one end of the 3rd impedance matching capacitances C3, one end of 25 filter capacitor C25, one end of first impedance matching inductance L 1 is connected with one end of the second impedance matching inductance L 2, 20 pin of microcontroller U1 and the other end of the 3rd impedance matching capacitances C3, one end of 26 filter capacitor C26, the other end of the first impedance matching inductance L 1 is connected with one end of the 3rd impedance matching inductance L 3, the other end of the 25 filter capacitor C25 and the other end grounding connection of the 26 filter capacitor C26, the other end of the second impedance matching inductance L 2 is connected with one end of the 13 impedance matching capacitances C13, the other end of the 13 impedance matching capacitances C13 is connected with one end of one end of the 12 filter capacitor C12 and 50 Europe impedance matching antennal interfaces, the other end grounding connection of the 12 filter capacitor C12, the other end of the 3rd impedance matching inductance L 3 is connected with one end of the 15 filter capacitor C15 and one end of the 14 impedance matching capacitances C14, the other end grounding connection of the 15 filter capacitor C15, the other end grounding connection of the 14 impedance matching capacitances C14,
Receiving terminal data storage circuitry comprises storage chip U2, the 5th resistance R5, the 4th resistance R4 and the 11 filter capacitor C11, described storage chip U2 model is 25LC320, 1 pin of storage chip U2 is connected with 13 pin of microcontroller U1, 2 pin of storage chip U2 are connected with 11 pin of microcontroller U1, 6 pin of storage chip U2 are connected with 12 pin of microcontroller U1, 5 pin of storage chip U2 are connected with 10 pin of microcontroller U1, 8 pin of storage chip U2 and power supply VCC, 4th resistance R4 one end is connected with one end of the 11 filter capacitor C11, the two ends of the 5th resistance R5 are connected with 3 pin of storage chip U2 and 4 pin, the 4 pin grounding connections of storage chip U2, the 4th resistance R4 other end is connected with 7 pin of storage chip U2, the other end grounding connection of the 11 filter capacitor C11,
Receiving terminal debug i/f circuit comprises 5X2 and arranges pin JP1, and a 9X1 arranges pin J1 and the 2nd 9X1 and arranges pin J2, and 1 pin that 5X2 arranges pin JP1 is connected with 10 pin of microcontroller U1, 2 pin that 5X2 arranges pin JP1 connect power supply, 5 foot rests that 5X2 arranges pin JP1 are empty, 7 pin that 5X2 arranges pin JP1 are connected with 12 pin of microcontroller U1, 9 pin that 5X2 arranges pin JP1 are connected with 11 pin of microcontroller U1, 5X2 arranges 4 pin of pin JP1, 6 pin, 8 pin and the equal grounding connection of 10 pin, 1 pin that one 9X1 arranges pin J1 connects power supply, 2 pin that one 9X1 arranges pin J1 are connected with 32 pin of microcontroller U1, 3 pin that one 9X1 arranges pin J1 are connected with 1 pin of microcontroller U1, 4 pin that one 9X1 arranges pin J1 are connected with 2 pin of microcontroller U1, 5 pin that one 9X1 arranges pin J1 are connected with 3 pin of microcontroller U1, 6 pin that one 9X1 arranges pin J1 are connected with 6 pin of microcontroller U1, 7 pin that one 9X1 arranges pin J1 are connected with 7 pin of microcontroller U1, 8 pin that one 9X1 arranges pin J1 are connected with 8 pin of microcontroller U1, 9 pin that one 9X1 arranges pin J1 are connected with 9 pin of microcontroller U1, 2nd 9X1 arranges the 1 pin ground connection of pin J2, 2 pin that 2nd 9X1 arranges pin J2 are connected with 13 pin of microcontroller U1, 3 pin that 2nd 9X1 arranges pin J2 are connected with 12 pin of microcontroller U1, 4 pin that 2nd 9X1 arranges pin J2 are connected with 11 pin of microcontroller U1, 5 pin that 2nd 9X1 arranges pin J2 are connected with 10 pin of microcontroller U1, 6 pin that 2nd 9X1 arranges pin J2 are connected with 26 pin of microcontroller U1, 7 pin that 2nd 9X1 arranges pin J2 are connected with 27 pin of microcontroller U1, 8 pin that 2nd 9X1 arranges pin J2 are connected with 28 pin of microcontroller U1, 9 pin that 2nd 9X1 arranges pin J2 are connected with 29 pin of microcontroller U1,
Receiving terminal power supply stabilization circuit comprises USBJ3, single-pole single-throw switch (SPST) S2, single-pole double-throw switch (SPDT) S1, fuse F, the 24 electrolytic capacitor filter C24, the 23 filter capacitor C23, general-purpose diode D3, voltage stabilizing chip U3, the 21 electrolytic capacitor filter C21, the 22 filter capacitor C22 and battery J5, the model of described voltage stabilizing chip U3 is 3.3V voltage stabilizing chip AMS1117, the model of general-purpose diode D3 is 1N4007, USBJ3 first pin grounding connection, USBJ3 second pin is connected with one end of single-pole single-throw switch (SPST) S2, the other end of single-pole single-throw switch (SPST) S2 is connected with one end of fuse F, the other end of fuse F and 1 pin of voltage stabilizing chip U3, the positive pole of the 24 electrolytic capacitor filter C24 and one end of the 23 filter capacitor C23 connect, the minus earth of the 24 electrolytic capacitor filter C24 connects, the other end grounding connection of the 23 filter capacitor C23, 2 pin of voltage stabilizing chip U3 are connected with the anode of general-purpose diode D3, the minus earth of general-purpose diode D3 connects, 3 pin of voltage stabilizing chip U3 and the positive pole of the 21 electrolytic capacitor filter C21, one end of 22 filter capacitor C22 and a joint of single-pole double-throw switch (SPDT) S1 connect, 21 electrolytic capacitor filter C21 minus earth connects, the other end grounding connection of the 22 filter capacitor C22, the another one joint of single-pole double-throw switch (SPDT) S1 is connected with the positive pole of battery J5, the minus earth of battery J5 connects, the movable termination power VCC of single-pole double-throw switch (SPDT) S1,
Receiving terminal LED interface circuit comprises the first Light-Emitting Diode D1, second Light-Emitting Diode D2,4th Light-Emitting Diode D4,5th Light-Emitting Diode D5,6th Light-Emitting Diode D6, the 7th current-limiting resistance R7, the 8th current-limiting resistance R8,11 current-limiting resistance R11, the 14 current-limiting resistance R14 and the 15 current-limiting resistance R15, the anode of the first Light-Emitting Diode D1 is connected with the anode of the second Light-Emitting Diode D2 and meets power supply VCC, the negative electrode of the first Light-Emitting Diode D1 is connected with one end of the 7th current-limiting resistance R7, the other end of the 7th current-limiting resistance R7 is connected with 1 pin of microcontroller U1, the negative electrode of the second Light-Emitting Diode D2 is connected with one end of the 8th current-limiting resistance R8, the other end of the 8th current-limiting resistance R8 is connected with 2 pin of microcontroller U1, the anode of the 4th Light-Emitting Diode D4 meets power supply VCC, the negative electrode of the 4th Light-Emitting Diode D4 is connected with one end of the 11 current-limiting resistance R11, the other end grounding connection of the 11 current-limiting resistance R11, the anode of the 5th Light-Emitting Diode D5 is connected with the anode of the 6th Light-Emitting Diode D6 and meets power supply VCC, the negative electrode of the 5th Light-Emitting Diode D5 is connected with one end of the 14 current-limiting resistance R14, the other end of the 14 current-limiting resistance R14 is connected with 7 pin of microcontroller U1, the negative electrode of the 6th Light-Emitting Diode D6 is connected with one end of the 15 current-limiting resistance R15, the other end of the 15 current-limiting resistance R15 is connected with 8 pin of microcontroller U1,
Receiving terminal buzzer interface circuit comprises buzzer U4, NPN triode Q and the 13 current-limiting resistance R13; The positive pole of buzzer U4 meets power supply VCC, the negative pole of buzzer U4 is connected with the collector electrode of NPN triode Q, the grounded emitter of NPN triode Q, the base stage of NPN triode Q is connected with one end of the 13 current-limiting resistance R13, and the other end of the 13 current-limiting resistance R13 is connected with 3 pin of microcontroller U1;
Receiving terminal RS232 serial interface circuit comprises physical chip U6,16 filter capacitor C16, the 17 multiplication of voltage charge pump capacitor C17, the tenth octuple pressure charge pump capacitor C18,19 filter capacitor C19, the 20 filter capacitor C20 and RS232 interface circuit 9 needle interface DB9, the model of described physical chip U6 is MAX3232, the positive pole of the 17 multiplication of voltage charge pump capacitor C17 is connected with 1 pin of physical chip U6, the negative pole of the 17 multiplication of voltage charge pump capacitor C17 is connected with 3 pin of physical chip U6, the positive pole of the 16 filter capacitor C16 is connected with 2 pin of physical chip U6, the minus earth of the 16 filter capacitor C16, the tenth octuple pressure positive pole of charge pump capacitor C18 is connected with 4 pin of physical chip U6, the tenth octuple pressure negative pole of charge pump capacitor C18 is connected with 5 pin of physical chip U6, the negative pole of the 19 filter capacitor C19 is connected with 6 pin of physical chip U6, the plus earth of the 19 filter capacitor C19, 9 pin of physical chip U6 are connected with 1 pin of microcontroller U1, 10 pin of physical chip U6 are connected with 2 pin of microcontroller U1, 8 pin of physical chip U6 are connected with 3 pin of RS232 interface circuit 9 needle interface DB9, 7 pin of physical chip U6 are connected with 2 pin of RS232 interface circuit 9 needle interface DB9, 15 pin of physical chip U6, one end ground connection of the 20 filter capacitor C20, 16 pin of physical chip U6 and another termination power VCC of the 20 filter capacitor C20, the 9 pin ground connection of RS232 interface circuit 9 needle interface DB9, 11 pin of physical chip U6, 12 pin, 13 pin and 14 pin unsettled, 1 pin of RS232 interface circuit 9 needle interface DB9, 4 pin, 5 pin, 6 pin, 7 pin and 8 pin unsettled.
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