CN202230597U

CN202230597U - Wireless self-networking intelligent meter reading device

Info

Publication number: CN202230597U
Application number: CN2011203060839U
Authority: CN
Inventors: 朱剑; 赵海
Original assignee: Northeastern University China
Current assignee: Northeastern University China
Priority date: 2011-08-22
Filing date: 2011-08-22
Publication date: 2012-05-23
Anticipated expiration: 2021-08-22

Abstract

A wireless self-networking intelligent meter reading device belongs to the technical field of wireless communication, and comprises an antenna, an antenna switch, a wireless transceiver, a singlechip, a program download debugging interface, a clock module, an LED display module, an electricity meter, a matching circuit and a voltage stabilizer. The wireless self-networking intelligent meter reading device adopts an RF (Radio Frequency) emission chip to achieve automatic networking and automatic node discovery and deletion without the need of router configuration, is fast in communication, and has simplicity in maintenance and low cost. The electricity meter is controlled by a wireless signal to output data, and a fixed address is distributed for each electricity meter node, so that each data collector can be specifically controlled, each newly-added node can be automatically added into a wireless network, and all the nodes build a plurality of tree routing structures through handshaking and updating mechanisms.

Description

A kind of wireless ad hoc network intelligent meter data recording device

Technical field

The utility model belongs to wireless communication technology field, particularly a kind of wireless ad hoc network intelligent meter data recording device.

Background technology

Along with the Chinese society expanding economy, electricity consumption of resident increases severely, and conventional artificial counting cost by gas meter mode can not satisfy the requirement of modern management; The immanent power line network of domestic existing intelligent meter data recording techniques make use is as telecommunication media, but as far as China, on the one hand its power grid environment more complicated; A lot of electrical equipment are not all adorned the common mode filtrator on request, electrical network have been caused the assembling electrical equipment of very big pollution, particularly some person who is not a member of any political partys; Like the PC case of assembling, the incandescent lamp of tunable optical etc.; Under the severe contamination situation, the success ratio that power carrier is checked meter is very low, is about 50%-60%.

Summary of the invention

To the deficiency of existing apparatus, the utility model proposes a kind of wireless ad hoc network intelligent meter data recording device, to reach automatic building network, discovery automatically, automatic deletion of node, need not to dispose route, and communication speed is fast, safeguards simple purpose.

The technical scheme of the utility model is achieved in that a kind of wireless ad hoc network intelligent meter data recording device; Comprise: antenna, duplexer, wireless transceiver, single-chip microcomputer, program are downloaded debugging interface, clock module, LED display module, ammeter; Comprise match circuit and voltage stabilizer in addition; Its annexation is following: the input/output terminal of antenna connects first input/output terminal of duplexer; Second input/output terminal of duplexer connects first input/output terminal of match circuit, and second input/output terminal of match circuit connects first input/output terminal of wireless transceiver, and second input/output terminal of wireless transceiver connects first input/output terminal of single-chip microcomputer; The input end of wireless transceiver connects first output terminal of voltage stabilizer; The first input end of single-chip microcomputer connects the output terminal of clock module, and the second input/output terminal linker of single-chip microcomputer is downloaded debugging interface, and the output terminal of single-chip microcomputer connects the input/output terminal of the 3rd input/output terminal connection ammeter of LED display module, single-chip microcomputer; The voltage output end of ammeter connects voltage stabilizer, and second output terminal of voltage stabilizer connects the power end of single-chip microcomputer;

Described match circuit comprises inductance and electric capacity; Said inductance comprises first inductance, second inductance, the 3rd inductance, the 4th inductance and the 5th inductance; Said electric capacity is made up of first electric capacity, second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity and the 6th electric capacity, and its annexation is following: an end of first inductance connects first output terminal of power supply and match circuit, and the other end of first inductance connects an end of first electric capacity, an end of second electric capacity and second output terminal of match circuit; The other end ground connection of first electric capacity; The other end of second electric capacity connects an end of second inductance, and the other end of second inductance connects an end of the 3rd inductance and an end of the 3rd electric capacity, the other end ground connection of the 3rd electric capacity; The other end of the 3rd inductance connects an end of the 4th electric capacity and an end of the 4th inductance; The other end ground connection of the 4th electric capacity, the other end of the 4th inductance connect an end of the 5th electric capacity and the first input end of match circuit, the other end ground connection of the 5th electric capacity; Second input end of match circuit connects an end of the 6th electric capacity; The other end of the 6th electric capacity connects an end of the 5th inductance and the 3rd output terminal of match circuit; The other end of the 5th inductance connects an end of the 6th electric capacity and the 4th output terminal of match circuit, the other end ground connection of the 6th electric capacity;

Described voltage stabilizer is stabilized in 3.3V with the voltage of single-chip microcomputer and wireless transceiver;

The utility model advantage: comprise following several respects: (1) adopt the radio-frequency transmissions chip automatically building network, find and automatic deletion of node automatically; Need not to dispose route; Communication speed is fast, and maintenance is simple and cost is low, through the data output of wireless signal control ammeter; Each ammeter node is all distributed fixed address; Can control each data acquisition unit targetedly, each newly-increased node can add in the wireless network automatically, and all nodes are through shaking hands and update mechanism is set up a plurality of tree-like routing infrastructures; (2) directly take the 5v power supply of from ammeter, exporting, arrive 3.3v through the AMS1117-3.3 voltage stabilizing again, single-chip microcomputer and radio transmitting and receiving chip are operated under the same burning voltage, the voltage ratio of directly taking is less, has played good energy-conserving action; (3) match circuit of wireless receiving and dispatching part has used microstrip line, when having reduced the use amount of capacitor and inductor, plays the better impedance matching function, makes the radio signal power of launching big as much as possible.

Description of drawings

Fig. 1 is a kind of wireless ad hoc network intelligent meter data recording apparatus structure block diagram;

Fig. 2 is a kind of wireless ad hoc network intelligent meter data recording device radio transceiver circuitry schematic diagram;

Fig. 3 is a kind of wireless ad hoc network intelligent meter data recording device single chip circuit schematic diagram;

Fig. 4 is that a kind of wireless ad hoc network intelligent meter data recording device program is downloaded the debug i/f circuit schematic diagram;

Fig. 5 is a kind of wireless ad hoc network intelligent meter data recording device voltage regulator circuit schematic diagram;

Among the figure, 1, antenna; 2, duplexer; 3, match circuit; 4, wireless transceiver; 5, single-chip microcomputer; 6, clock module; 7, LED display module; 8, voltage stabilizer; 9, ammeter; 10, program is downloaded debugging interface.

Embodiment

Below in conjunction with accompanying drawing the utility model is done further explain.

A kind of wireless ad hoc network intelligent meter data recording of present embodiment device; Its structure is as shown in Figure 1; Comprise: antenna 1, duplexer 2, wireless transceiver 4, single-chip microcomputer 5, clock module 6, LED display module 7, ammeter 9 and program are downloaded debugging interface 10, in addition, also comprise match circuit 3 and voltage stabilizer 8; Its annexation is following: the output terminal of antenna 1 connects first input/output terminal of duplexer 2; Second input/output terminal of duplexer 2 connects first input/output terminal of match circuit, and second input/output terminal of match circuit connects first input/output terminal of wireless transceiver 4, and second input/output terminal of wireless transceiver 4 connects first input/output terminal of single-chip microcomputer 5; The input end of wireless transceiver 4 connects first output terminal of voltage stabilizer 8; The first input end of single-chip microcomputer 5 connects the output terminal of clock module 6, and the second input/output terminal linker of single-chip microcomputer 5 is downloaded debugging interface 10, and the output terminal of single-chip microcomputer 5 connects the input/output terminal of the 3rd input/output terminal connection ammeter 9 of LED display module 7, single-chip microcomputer 5; The voltage output end of ammeter 9 connects voltage stabilizer 8, and second output terminal of voltage stabilizer 8 connects the power end of single-chip microcomputer 5;

Fig. 2 is the circuit theory diagrams of antenna, duplexer and the wireless transceiver of the utility model; Wherein, Antenna adopts 433M bar antenna ANT, and duplexer adopts chip UPG2214, and the antenna receiving-sending device adopts the SI4432 radio frequency chip; Its annexation is following: the output terminal of antenna connects the INPUT9 port of UPG2214, and the Vcont1 pin of UPG2214 and Vcont2 pin are connected the I/O port GPIO1 pin and the GPIO2 pin of SI4432 radio frequency chip respectively;

Described match circuit comprises inductance and electric capacity; Said inductance comprises first inductance L 1, second inductance L 4, the 3rd inductance L 3, the 4th inductance L 2 and the 5th inductance L 5; Said electric capacity is made up of first capacitor C 11, second capacitor C 9, the 3rd capacitor C 14, the 4th capacitor C 13, the 5th capacitor C 12 and the 6th capacitor C 20; Its annexation is following: an end of first inductance L 1 connects first output terminal of power supply and match circuit; The other end of first inductance L 1 connects an end of first capacitor C 11, an end of second capacitor C 9 and second output terminal of match circuit, the other end ground connection of first capacitor C 11, and the other end of second capacitor C 9 connects an end of second inductance L 4; The other end of second inductance L 4 connects an end of the 3rd inductance L 3 and an end of the 3rd capacitor C 14; The other end ground connection of the 3rd capacitor C 14, the other end of the 3rd inductance L 3 connect an end of the 4th capacitor C 13 and an end of the 4th inductance L 2, the other end ground connection of the 4th capacitor C 13; The other end of the 4th inductance L 2 connects an end of the 5th capacitor C 12 and the first input end of match circuit, the other end ground connection of the 5th capacitor C 12; Second input end of match circuit connects an end of the 6th capacitor C 20; The other end of the 6th capacitor C 20 connects an end of the 5th inductance L 5 and the 3rd output terminal of match circuit; The other end of the 5th inductance L 5 connects an end of the 6th capacitor C 20 and the 4th output terminal of match circuit, the other end ground connection of the 6th capacitor C 20;

The first input end of match circuit connects No. 3 pin of duplexer chip UPG2214; Second input end of match circuit connects No. 1 pin of duplexer chip UPG2214, and first output terminal of match circuit, second output terminal, the 3rd output terminal and the 4th output terminal are connected VDD RE pin, TX pin, the RX of SI4432 radio frequency chip successively _pPin and RX _pPin;

Fig. 3 is the utility model single chip circuit schematic diagram; The model of single-chip microcomputer is ATmega32L-8AC; Its annexation with the SI4432 radio frequency chip is following: the PB5 pin of ATmega32L-8AC single-chip microcomputer, PB6 pin are connected data port SDO, the SDI of Si4432 radio frequency chip respectively; The PB7 pin of ATmega32L-8AC single-chip microcomputer connects the serial clock input pin SCLK of Si4432 radio frequency chip; The PB4 pin of ATmega32L-8AC single-chip microcomputer connects the serial line interface input pin nSEL of Si4432 radio frequency chip, and the PD3 pin of ATmega32L-8AC single-chip microcomputer connects the interruption status output pin nIRQ of Si4432 radio frequency chip;

The XTAL2 pin of ATmega32L-8AC single-chip microcomputer and XTAL1 pin are connected the output terminal of clock module respectively, and the PA5 pin of ATmega32L-8AC single-chip microcomputer, PA6 pin and PA7 pin are connected first input end, second input end and the 3rd input end of LED display module respectively;

Fig. 4 downloads debugging interface jtag circuit schematic diagram for the utility model program, and it with the annexation of ATmega32L-8AC single-chip microcomputer is: program is downloaded test clock input pin TCK, the test pattern of debugging interface JTAG and is selected pin TMS, test data input pin TDI, test data output pin TDO and resetting pin RESET to be connected PC2 pin, PC3 pin, PC5 pin, PC4 pin, the RESET pin of ATmega32L-8AC single-chip microcomputer respectively;

Fig. 5 is the circuit theory diagrams of the utility model voltage stabilizer, and the output terminal of voltage stabilizer connects the power supply of ATmega32L-8AC single-chip microcomputer;

The port PD0 of ATmega32L-8AC single-chip microcomputer, PD1 link to each other with the DDZY482-Z ammeter behind voltage transformation.

A kind of wireless ad hoc network intelligent meter data recording of the utility model device is connected on the ammeter; Radio node through far-end transmits control signal in network; After be forwarded on the hardware system, the hardware system end is received wireless signal, can trigger the interruption of single-chip microcomputer; Then control ammeter data output, accomplish collection ammeter data.The ATmega32L-8AC single-chip microcomputer need use common I/O mouth simulation SPI; Register to the Si4432 radio frequency chip is provided with; The maximum operation voltage of Si4432 radio frequency chip is 3.6V; So the power supply of ATmega32L-8AC single-chip microcomputer should be less than this upper limit, through using the AMS1117-3.3 voltage stabilizer ammeter output voltage 5V is reduced to 3.3V, for ATmega32L-8AC single-chip microcomputer and Si4432 radio frequency chip provide stable 3.3V voltage.

Claims

1. wireless ad hoc network intelligent meter data recording device; Comprise: antenna, duplexer, wireless transceiver, single-chip microcomputer, program are downloaded debugging interface, clock module, LED display module, ammeter; It is characterized in that: also comprise match circuit and voltage stabilizer; Its annexation is following: the input/output terminal of antenna connects first input/output terminal of duplexer; Second input/output terminal of duplexer connects first input/output terminal of match circuit; Second input/output terminal of match circuit connects first input/output terminal of wireless transceiver, and second input/output terminal of match circuit connects first input/output terminal of wireless transceiver, and second input/output terminal of wireless transceiver connects first input/output terminal of single-chip microcomputer; The second input/output terminal linker of single-chip microcomputer is downloaded debugging interface; The output terminal of single-chip microcomputer connects the input/output terminal of the 3rd input/output terminal connection ammeter of LED display module, single-chip microcomputer, and the voltage output end of ammeter connects voltage stabilizer, and second output terminal of voltage stabilizer connects the power end of single-chip microcomputer.

2. wireless ad hoc network intelligent meter data recording device according to claim 1; It is characterized in that: described match circuit comprises inductance and electric capacity; Said inductance comprises first inductance, second inductance, the 3rd inductance, the 4th inductance and the 5th inductance; Said electric capacity is made up of first electric capacity, second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity and the 6th electric capacity, and its annexation is following: an end of first inductance connects first output terminal of power supply and match circuit, and the other end of first inductance connects an end of first electric capacity, an end of second electric capacity and second output terminal of match circuit; The other end ground connection of first electric capacity; The other end of second electric capacity connects an end of second inductance, and the other end of second inductance connects an end of the 3rd inductance and an end of the 3rd electric capacity, the other end ground connection of the 3rd electric capacity; The other end of the 3rd inductance connects an end of the 4th electric capacity and an end of the 4th inductance; The other end ground connection of the 4th electric capacity, the other end of the 4th inductance connect an end of the 5th electric capacity and the first input end of match circuit, the other end ground connection of the 5th electric capacity; Second input end of match circuit connects an end of the 6th electric capacity; The other end of the 6th electric capacity connects an end of the 5th inductance and the 3rd output terminal of match circuit; The other end of the 5th inductance connects an end of the 6th electric capacity and the 4th output terminal of match circuit, the other end ground connection of the 6th electric capacity.

3. wireless ad hoc network intelligent meter data recording device according to claim 1 is characterized in that: described voltage stabilizer is stabilized in 3.3V with the voltage of single-chip microcomputer and wireless transceiver.