CN208285306U

CN208285306U - 3G module

Info

Publication number: CN208285306U
Application number: CN201820917620.5U
Authority: CN
Inventors: 任志广
Original assignee: Zhangjiakou Jie Xing Electronic Technology Co Ltd
Current assignee: Zhangjiakou Jie Xing Electronic Technology Co Ltd
Priority date: 2018-06-13
Filing date: 2018-06-13
Publication date: 2018-12-25
Anticipated expiration: 2028-06-13

Abstract

The utility model belongs to electronic communication technology field, in particular to a kind of 3G module；A kind of its 3G module, including 3G telecommunication circuit, amplifying circuit, driving circuit, filter circuit, power circuit and anti-clutter circuit；The input terminal of the output end connection power circuit of the anti-clutter circuit, power circuit is used to power to 3G telecommunication circuit, amplifying circuit and filter circuit, the input terminal of the output end connection 3G telecommunication circuit of amplifying circuit, the output end of filter circuit is separately connected amplifying circuit and 3G telecommunication circuit, the output end of the input terminal connection mainboard of filter circuit.The utility model provides a kind of new 3G module, which carries out the communication between mainboard and terminal using 3G telecommunication circuit, and scalability is strong, and mobility is good, can reduce expense, and have good practicability.On the other hand, by the way that reasonable circuit is arranged, anti-interference can be improved, guarantee the stabilized communication between mainboard and terminal.

Description

3G module

Technical field

The utility model belongs to electronic communication technology field, in particular to a kind of 3G module.

Background technique

Smoke exhaust ventilator is also known as range hood, is a kind of kitchen appliance for purifying kitchen environment.It is mounted on kitchen range Side can take rapidly the oil smoke being harmful to the human body generated in the waste and cooking process of cooking stove burning away, and discharge is outdoor, reduces Pollution purifies air, in order to solve breakdown problem of the high voltage package of smoke exhaust ventilator between high-field electrode, usually detects high voltage package Output voltage solve problems.And between the mainboard and terminal of existing detection circuit in such a way that optical fiber etc. is wired into Row communication, affected by environment larger, scalability is weaker, poor mobility, and costly.

Utility model content

In view of the above-mentioned problems, the utility model provides a kind of new 3G module, which is carried out using 3G telecommunication circuit Communication between mainboard and terminal, scalability is strong, and mobility is good, and can reduce expense.

The utility model specific technical solution is as follows:

The utility model provides a kind of 3G module, including 3G telecommunication circuit, amplifying circuit, driving circuit, filter circuit, electricity Source circuit and anti-clutter circuit；

The anti-clutter circuit output end connection power circuit input terminal, power circuit be used for 3G telecommunication circuit, Amplifying circuit and filter circuit power supply, amplifying circuit output end connection 3G telecommunication circuit input terminal, filter circuit it is defeated Outlet is separately connected amplifying circuit and 3G telecommunication circuit, the output end of the input terminal connection mainboard of filter circuit.

Further to improve, the 3G telecommunication circuit includes antenna, 3G communication chip, SIM interface chip, resistance R1, electricity R2, resistance R3, resistance R4, resistance R5, capacitor C1, capacitor C2, capacitor C3 and triode VT1 are hindered, 1 pin of the antenna connects 19 pins of 3G communication chip are connect, 2,3,4,5 pins are connected and are grounded, and 4 pins and 5 pins of the SIM interface chip are connected And be grounded, 6 pins connect the first end of capacitor C1, and 7 pins connect the first end of resistance R1, and 8 pins connect the first of resistance R2 End, 9 pins connect 7 pins of 3G communication chip, and 10 pins connect the first end of resistance R3, second end and the power supply electricity of capacitor C1 The input terminal on road connects, 9 pins of the second end connection 3G communication chip of the resistance R1, the second end connection of the resistance R2 10 pins of 3G communication chip, 8 pins of the second end connection 3G communication chip of the resistance R3, the collection of the triode VT1 38 pins of electrode c connection 3G communication chip, the first end of base stage b connection resistance R4 and the first end of resistance R5, resistance R4's Second end connects the second end of the first end of capacitor C2, the emitter e of triode VT1 and resistance R4, the second end of resistance R5 It being connect with the output end of driving circuit, the second end of capacitor C2 is connected and is grounded with the second end of capacitor C3, and the first of capacitor C3 End is connected with the first end of capacitor C2, and 2,5,6,16,17,18,20,23,24,29,32,35,37, the 39 of 3G communication chip are drawn Foot is grounded, and 21,22 pins are connected and connect power circuit, and 29,32 pins are both connected to the second end of capacitor C3.

Further to improve, the amplifying circuit includes communicating single-chip microcontroller, capacitor C4-C14 and voltage-stabiliser tube, capacitor C4's First end, the first end of capacitor C5, the first end of capacitor C6, the first end of capacitor C8, the first end of capacitor C9, capacitor C10 First end, the first end of capacitor C11, voltage-stabiliser tube 1 pin and communicate single-chip microcontroller VCC pin be all connected with VCC power supply, electricity Hold the second end of C4, the second end of capacitor C5, the second end of capacitor C6, the second end of capacitor C8, the second end of capacitor C9, capacitor The second end of C10, the second end of capacitor C11 and 2 pins of voltage-stabiliser tube, the second end of capacitor C7, the second end of capacitor C12, The GND pin of the second end of capacitor C13, the second end of capacitor C14 and communication single-chip microcontroller is grounded, the first end of capacitor C12, The first end of capacitor C13, the first end of capacitor C14 are all connected with the input terminal of power circuit, 3 pins and capacitor C7 of voltage-stabiliser tube First end be all connected with the output end of power circuit.

It is further to improve, be connected between the 3G communication chip and single-chip microcontroller resistance R6, resistance R7, resistance R8 and The P1.1 pin of the first end connection single-chip microcontroller of triode VT2, resistance R6, second end connect 25 pins of 3G communication chip, electricity The P1.0 pin of the first end connection single-chip microcontroller of R7 is hindered, second end connects 26 pins of 3G communication chip, the first end of resistance R8 The base stage b of connecting triode VT2, second end connect the P3.4 pin of single-chip microcontroller, the emitter e ground connection of triode VT2, collector The second end of c connection resistance R5.

Further to improve, the filter circuit includes electrostatic protection chip, resistance R9-R17, diode D1, diode D2, triode VT3, triode VT4 and capacitor C15, the RXD/ pin of the RO pin connection single-chip microcontroller of electrostatic protection chip, REB pin is connected with DE pin, and is connected on the T1CL pin of single-chip microcontroller, and DI pin connects the TXD/ pin of single-chip microcontroller, The first end of VCC pin, the first end of resistance R11 and capacitor C15 is all connected with power supply VCC, and B pin connects the first of resistance R9 The first end at end and resistance R13, A pin connect the second end of resistance R9, GND pin, the second end of resistance R10, diode D2 Anode, the anode of diode D1, the second end of capacitor C15, the second end of resistance R14, the second end of resistance R16, triode The emitter e of VT3 and the emitter e of triode VT4 are grounded, the first end of the first end connection resistance R9 of resistance R10, electricity The second end of the second end connection resistance R9 of R11 and the first end of resistance R12 are hindered, the second end of resistance R12 connects diode D1 Cathode, resistance R13 second end connection diode D2 cathode, the first end of resistance R14 and the base stage b of triode VT3 are equal Connect the first end of resistance R15,13 pins of the second end connection 3G communication chip of resistance R15, the collector c of triode VT3 Output, the collector c output of triode VT4, the first end of base stage b connection resistance R16 and the first end of resistance R17, resistance R17 Second end connection 3G communication chip 36 pins.

Further to improve, the power circuit includes capacitor C16-C24, voltage-stablizer, power supply chip, resistance R18, resistance R19, diode D3, diode D4, diode D5, diode D6, diode D7, the first end of the capacitor C16, capacitor C17 First end, 2 pins of voltage-stablizer, 4 pins are connected, and the second end of capacitor C16 is connected and is grounded with capacitor C17 second end, surely 3 pins of depressor connect power supply VCC, and 1 pin is connected and is grounded with the first end of capacitor C18, the second end of capacitor C18, capacitor The second end of C19 is connected with the second end of resistance R18, and connects the first end of capacitor C7, the second end of capacitor C1 and 3G communication 22 pins of chip, the cathode of the first end connection diode D3 of capacitor C19 and 2 pins of power supply chip, the sun of diode D3 Pole, 4 pins of power supply chip, 5 pins, 6 pins, 7 pins, 8 pins and capacitor C20 first end be grounded, power supply chip 3 pins connection resistance R19 first end, 1 pin connect diode D6 cathode and capacitor C20 second end, resistance R18's The first end of first end, the first end of capacitor C21 and resistance R19 is connected, the second end of resistance R18 and the second of capacitor C21 End is connected, and the second end of resistance R19, the second end of capacitor C22, the second end of capacitor C23, the second end of capacitor C24 are grounded, The first end of capacitor C22, the first end of capacitor C23, the first end of capacitor C24 are connected and connect the cathode of diode D6, two poles The anode of pipe D4 and the anode of diode D7 are grounded, the anode of the cathode connection diode D5 of diode D4, diode D5's Cathode is connected with the cathode of diode D6 and connect 3 pins of voltage-stabiliser tube and the first end of capacitor C14.

Further to improve, the anti-clutter circuit includes fuse FU, capacitor C25, filter and transformer T, institute The second end of the first end and capacitor C25 of stating fuse FU is all connected with the AC power source of 220V, and second end connects capacitor C25's First end, the first end of the 1 pin connection capacitor C25 of filter, 2 pins connect the second end of capacitor C25, and the connection of 3 pins becomes 1 pin of depressor T, 4 pins connect 2 pins of transformer T, the cathode of the 3 pins connection diode D4 of transformer T, and 4 pins connect Connect the anode of diode D6.

Further to improve, the 3G module further includes work light HLG, communication indicator light HLY, power supply indicator The first end of the second end connection resistance R20 of HLR, resistance R20, resistance R21 and capacitor C26, the work light HLG, First end connects the second end of capacitor C19, and the collector c of the second end connecting triode VT3 of resistance R20 communicates indicator light The first end of the second end connection resistance R21 of HLY, the second end of first end connection work light HLG, the second of resistance R21 Hold the collector c of connecting triode VT4, the first end of the second end connection capacitor C26 of power supply indicator HLR, first end connection The first end of capacitor C14, the second end ground connection of capacitor C26.

Further to improve, the anti-clutter circuit passes through the AC power source of the connection of connector XS 1 220V, filter circuit By connector XS2 connection mainboard, the first end of the 1 pin connection fuse FU of connector XS1,2 pins connect capacitor C25's Second end, the second end of the 1 pin connection resistance R12 of connector XS2,2 pins connect the cathode of diode D2.

Further to improve, the 3G module further includes for connecting the socket XS3 of Temperature Humidity Sensor, for connecting Socket XS4, resistance R22, resistance R23, resistance R24 and the capacitor C27 of vocs sensor, 1 pin, the capacitor of socket XS3 The second end of C27 and 3 pins of socket XS4 are all connected with the GND pin of single-chip microcontroller, and 2 pins of socket XS3 connect resistance R22 First end, 4 pins of 3 pins, the first end of capacitor C27 and socket XS4 are all connected with the VCC pin of single-chip microcontroller, resistance R22's Second end connects the P3.5 pin of single-chip microcontroller, the first end of the 1 pin connection resistance R24 of socket XS4, and 2 pins connect resistance The first end of R23, the P3.6 pin of the second end connection single-chip microcontroller of resistance R24, the second end connection single-chip microcontroller of resistance R23 P3.7 pin.

The beneficial effects of the utility model are as follows:

The utility model provides a kind of new 3G module, which is carried out between mainboard and terminal using 3G telecommunication circuit Communication, scalability is strong, and mobility is good, can reduce expense, and have good practicability.On the other hand, it is closed by setting Circuit is managed, anti-interference can be improved, guarantees the stabilized communication between mainboard and terminal.

Detailed description of the invention

Fig. 1 is the functional block diagram of 1 3G module of embodiment；

Fig. 2 is the circuit diagram of 2 3G telecommunication circuit of embodiment；

Fig. 3 is the circuit diagram of 3 amplifying circuit of embodiment；

Fig. 4 is the partial circuit diagram of 4 3G module of embodiment；

Fig. 5 is the circuit diagram of 5 filter circuit of embodiment；

Fig. 6 is the circuit diagram of 6 power circuit of embodiment；

Fig. 7 is the circuit diagram of 7 anti-clutter circuit of embodiment；

Fig. 8 is the partial circuit diagram of 8 3G module of embodiment；

Fig. 9 is the circuit diagram of 9 anti-clutter circuit of embodiment.

Specific embodiment

The utility model is described in further detail with following embodiment with reference to the accompanying drawing.

Embodiment 1

The utility model embodiment 1 provides a kind of 3G module, as shown in Figure 1, including 3G telecommunication circuit, amplifying circuit, drive Dynamic circuit, filter circuit, power circuit and anti-clutter circuit；

Working principle:

Anti-clutter circuit is by will obtain low-voltage AC after the filtering of 220V Alternating Current Power Supply transformation, the friendship as power circuit Stream power supply；Power circuit will export low-voltage DC after low-voltage alternating-current electric rectification, as 3G telecommunication circuit, amplifying circuit and filter The direct current supply of wave circuit, amplifying circuit is for handling the signal of input, and 3G telecommunication circuit is for transmitting a signal to Terminal (belongs to the prior art, do not show in figure), and filter circuit is for the clutter in filtering circuit.

Embodiment 2

The 3G module that the utility model embodiment 2 provides is substantially the same manner as Example 1, unlike, as shown in Fig. 2, institute Stating 3G telecommunication circuit includes antenna, 3G communication chip, SIM interface chip, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, capacitor C1, capacitor C2, capacitor C3 and triode VT1,19 pins of the 1 pin connection 3G communication chip of the antenna, 2, 3,4,5 pins are connected and are grounded, and 4 pins and 5 pins of the SIM interface chip are connected and are grounded, and 6 pins connect capacitor C1 First end, 7 pins connect resistance R1 first end, 8 pins connect resistance R2 first end, 9 pins connect 3G communication chip 7 pins, 10 pins connect the first end of resistance R3, and the input terminal of the second end of capacitor C1 and power circuit connects, the electricity Hinder 9 pins of the second end connection 3G communication chip of R1,10 pins of the second end connection 3G communication chip of the resistance R2, institute 8 pins of the second end connection 3G communication chip of resistance R3 are stated, the collector c connection 3G communication chip of the triode VT1 38 pins, the first end of base stage b connection resistance R4 and the first end of resistance R5, the first of the second end connection capacitor C2 of resistance R4 The second end at end, the emitter e of triode VT1 and resistance R4, the second end of resistance R5 and the output end of driving circuit connect, The second end of capacitor C2 is connected and is grounded with the second end of capacitor C3, and the first end of capacitor C3 is connected with the first end of capacitor C2, 2,5,6,16,17,18,20,23,24,29,32,35,37,39 pins of 3G communication chip are grounded, and 21,22 pins are connected simultaneously Power circuit is connected, 29,32 pins are both connected to the second end of capacitor C3.

SIM interface chip is used for plug sim card in the utility model, and protects SIM card, 3G communication chip (type well Number M6312) control signal sent based on GSM network and SIM, SIM card is by signal by antenna transmission to mobile terminal.

Embodiment 3

The 3G module that the utility model embodiment 3 provides is substantially the same manner as Example 2, unlike, as shown in figure 3, institute Stating amplifying circuit includes communication single-chip microcontroller, capacitor C4-C14 and voltage-stabiliser tube, the first end of capacitor C4, the first end of capacitor C5, The first end of capacitor C6, the first end of capacitor C8, the first end of capacitor C9, the first end of capacitor C10, the first end of capacitor C11, 1 pin of voltage-stabiliser tube and the VCC pin for communicating single-chip microcontroller are all connected with VCC power supply, and the second of the second end of capacitor C4, capacitor C5 End, the second end of capacitor C6, the second end of capacitor C8, the second end of capacitor C9, the second end of capacitor C10, capacitor C11 Two ends and 2 pins of voltage-stabiliser tube, the second end of capacitor C7, the second end of capacitor C12, the second end of capacitor C13, capacitor C14 Second end and communicate single-chip microcontroller GND pin be grounded, the first end of capacitor C12, the first end of capacitor C13, capacitor C14 First end be all connected with the input terminal of power circuit, 3 pins of voltage-stabiliser tube and the first end of capacitor C7 are all connected with power circuit Output end.

Single-chip microcontroller (model STC15F2K16S2) handles the signal of the filtering signal received in the utility model, And control instruction is assigned to 3G communication chip by driving circuit, wherein C6 is patch electrolytic capacitor, and C7, C11, C14 are patch Piece alminium electrolytic condenser.

Embodiment 4

The 3G module that the utility model embodiment 4 provides is substantially the same manner as Example 3, unlike, as shown in figure 4, institute It states and is connected with resistance R6, resistance R7, resistance R8 and triode VT2 between 3G communication chip and single-chip microcontroller, the first of resistance R6 The P1.1 pin of end connection single-chip microcontroller, second end connect 25 pins of 3G communication chip, and the first end of resistance R7 connects single-chip microcontroller P1.0 pin, second end connects 26 pins of 3G communication chip, the base stage b of the first end connecting triode VT2 of resistance R8, the Two ends connect the P3.4 pin of single-chip microcontroller, the emitter e ground connection of triode VT2, the second end of collector c connection resistance R5.

Resistance R8 is current-limiting resistance in the utility model, prevents from burning out triode VT2, and resistance R6, R7 are current-limiting resistance, Play the role of partial pressure, avoid the input voltage of 3G communication chip excessive, triode VT2 is to play amplification for controlling electric current Effect.

Embodiment 5

The 3G module that the utility model embodiment 5 provides is substantially the same manner as Example 4, unlike, as shown in figure 5, institute State filter circuit include electrostatic protection chip, resistance R9-R17, diode D1, diode D2, triode VT3, triode VT4 with And capacitor C15, the RXD/ pin of the RO pin connection single-chip microcontroller of electrostatic protection chip, REB pin is connected with DE pin, and connects On the T1CL pin of single-chip microcontroller, DI pin connects the TXD/ pin of single-chip microcontroller, VCC pin, the first end of resistance R11 and electricity The first end for holding C15 is all connected with power supply VCC, and B pin connects the first end of resistance R9 and the first end of resistance R13, and A pin connects The second end of connecting resistance R9, GND pin, the second end of resistance R10, the anode of diode D2, the anode of diode D1, capacitor The second end of C15, the second end of resistance R14, the second end of resistance R16, the emitter e of triode VT3 and triode VT4 Emitter e be grounded, the first end of the first end of resistance R10 connection resistance R9, the second end connection resistance R9's of resistance R11 The first end of second end and resistance R12, the cathode of the second end connection diode D1 of resistance R12, the second end of resistance R13 connect The cathode of diode D2 is connect, the first end of resistance R14 and the base stage b of triode VT3 are all connected with the first end of resistance R15, resistance 13 pins of the second end connection 3G communication chip of R15, the collector c output of triode VT3, the collector c of triode VT4 are defeated Out, the first end of the first end of base stage b connection resistance R16 and resistance R17, the second end connection 3G communication chip of resistance R17 36 pins.

Electrostatic protection chip (model AZRS3080) is for protection to circuit in the utility model, avoid sensitive circuit by To the influence of ESD, the protection to sensitive electronic components can be improved, multiple resistance, capacitor play the role of filtering, can filter out Clutter in circuit.

Embodiment 6

The 3G module that the utility model embodiment 6 provides is substantially the same manner as Example 5, unlike, as shown in fig. 6, institute State power circuit include capacitor C16-C24, voltage-stablizer, power supply chip, resistance R18, resistance R19, diode D3, diode D4, Diode D5, diode D6, the first end of diode D7, the capacitor C16, capacitor C17 first end, 2 pins of voltage-stablizer, 4 Pin is connected, and the second end of capacitor C16 is connected and is grounded with capacitor C17 second end, and 3 pins of voltage-stablizer connect power supply VCC, 1 pin is connected and is grounded with the first end of capacitor C18, and the of the second end of capacitor C18, the second end of capacitor C19 and resistance R18 Two ends are connected, and connect 22 pins of the first end of capacitor C7, the second end of capacitor C1 and 3G communication chip, and the of capacitor C19 One end connect diode D3 cathode and power supply chip 2 pins, the anode of diode D3,4 pins of power supply chip, 5 pins, 6 pins, 7 pins, 8 pins and capacitor C20 first end be grounded, the first of the 3 pins connection resistance R19 of power supply chip End, 1 pin connect the cathode of diode D6 and the second end of capacitor C20, the first end of resistance R18, the first end of capacitor C21 with And the first end of resistance R19 is connected, the second end of resistance R18 is connected with the second end of capacitor C21, the second end of resistance R19, electricity Hold the second end of C22, the second end of capacitor C23, the second end of capacitor C24 are grounded, the first end of capacitor C22, capacitor C23 First end, the first end of capacitor C24 are connected and connect the cathode of diode D6, the anode of diode D4 and the anode of diode D7 It is grounded, the anode of the cathode connection diode D5 of diode D4, the cathode of diode D5 is connected simultaneously with the cathode of diode D6 Connect 3 pins of voltage-stabiliser tube and the first end of capacitor C14.

Diode VD4-VD7 forms rectifier bridge in the utility model, whole for the low-voltage AC that inputs power circuit Low-voltage DC is obtained after stream, power supply chip (model TD1509PR) provides driving signal, pulse-width controlled, over-voltage over-current protection function Energy；Wherein capacitor C24 is patch electrolytic capacitor, and C18 is patch alminium electrolytic condenser.

Embodiment 7

The 3G module that the utility model embodiment 7 provides is substantially the same manner as Example 6, unlike, as shown in fig. 7, institute Stating anti-clutter circuit includes fuse FU, capacitor C25, filter and transformer T, the first end and capacitor of the fuse FU The second end of C25 is all connected with the AC power source of 220V, and second end connects the first end of capacitor C25, the 1 pin connection of filter The first end of capacitor C25,2 pins connect the second end of capacitor C25, and 3 pins connect 1 pin of transformer T, and the connection of 4 pins becomes 2 pins of depressor T, the cathode of the 3 pins connection diode D4 of transformer T, 4 pins connect the anode of diode D6.

220v alternating current is successively defeated after fuse FU, filter capacitor C25, filter, transformer in the utility model Low-voltage ac voltage out, filter capacitor C25 are used to filter out clutter in alternating current, filter be also filter out it is miscellaneous in alternating current Wave.

Embodiment 8

The 3G module that the utility model embodiment 8 provides is substantially the same manner as Example 7, unlike, as shown in figure 8, institute State 3G module further include work light HLG, communication indicator light HLY, power supply indicator HLR, resistance R20, resistance R21 and The first end of the second end connection resistance R20 of capacitor C26, the work light HLG, first end connect the second of capacitor C19 End, the of the second end connection resistance R21 of the collector c of the second end connecting triode VT3 of resistance R20, communication indicator light HLY One end, the second end of first end connection work light HLG, the collector c of the second end connecting triode VT4 of resistance R21, The first end of the second end connection capacitor C26 of power supply indicator HLR, first end connect the first end of capacitor C14, capacitor C26's Second end ground connection.

Judge whether each circuit works normally according to indicator light in the utility model, and each indicator light difference series electrical is perhaps Resistance plays the role of partial pressure.

Embodiment 9

The 3G module that the utility model embodiment 9 provides is substantially the same manner as Example 8, unlike, as shown in figure 9, institute The AC power source that anti-clutter circuit passes through connector XS1 connection 220V is stated, filter circuit is connect by connector XS2 connection mainboard The first end of the 1 pin connection fuse FU of plug-in unit XS 1,2 pins connect the second end of capacitor C25, and the 1 of connector XS2 is drawn Foot connects the second end of resistance R12, and 2 pins connect the cathode of diode D2.

It is for the AC power source of external 220V that connector XS1 is arranged in the utility model, and connector XS2 is to connect Signal is transmitted between filter circuit and mainboard.

Embodiment 10

The 3G module that the utility model embodiment 10 provides is substantially the same manner as Example 9, unlike, the 3G module is also Including the socket XS3 for connecting Temperature Humidity Sensor, the socket XS4 for connecting vocs sensor, resistance R22, resistance 3 pins of R23, resistance R24 and capacitor C27,1 pin of socket XS3, the second end of capacitor C27 and socket XS4 are all connected with The GND pin of single-chip microcontroller, socket XS3 2 pins connection resistance R22 first end, 3 pins, capacitor C27 first end and insert 4 pins of seat XS4 are all connected with the VCC pin of single-chip microcontroller, the P3.5 pin of the second end connection single-chip microcontroller of resistance R22, socket The first end of the 1 pin connection resistance R24 of XS4,2 pins connect the first end of resistance R23, and the second end of resistance R24 connects single The P3.6 pin of piece machine, the P3.7 pin of the second end connection single-chip microcontroller of resistance R23.

It is to pass the collected signal of sensor to transmit signal that socket XS3 and socket XS4 is arranged in the utility model It is defeated by single-chip microcontroller, and then the signal of acquisition is handled.

Embodiment described above is only that preferred embodiments of the present invention are described, not to the utility model Range be defined, under the premise of not departing from the spirit of the design of the utility model, those of ordinary skill in the art are to this is practical The various changes and improvements that novel technical solution is made should all fall into the protection model that claims of the utility model determine In enclosing.

Claims

1. a kind of 3G module, which is characterized in that including 3G telecommunication circuit, amplifying circuit, filter circuit, power circuit and prevent dry Disturb circuit；

The input terminal of the output end connection power circuit of the anti-clutter circuit, power circuit are used for 3G telecommunication circuit, amplification Circuit and filter circuit power supply, the input terminal of the output end connection 3G telecommunication circuit of amplifying circuit, the output end of filter circuit It is separately connected amplifying circuit and 3G telecommunication circuit, the output end of the input terminal connection mainboard of filter circuit.

2. 3G module according to claim 1, which is characterized in that the 3G telecommunication circuit include antenna, 3G communication chip, SIM interface chip, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, capacitor C1, capacitor C2, capacitor C3 and triode VT1,19 pins of the 1 pin connection 3G communication chip of the antenna, 2,3,4,5 pins are connected and are grounded, the SIM interface core 4 pins and 5 pins of piece are connected and are grounded, the first end of 6 pins connection capacitor C1, the first end of 7 pins connection resistance R1, and 8 Pin connects the first end of resistance R2, and 9 pins connect 7 pins of 3G communication chip, and 10 pins connect the first end of resistance R3, electricity The input terminal of the second end and power circuit of holding C1 connects, 9 pins of the second end connection 3G communication chip of the resistance R1, institute 10 pins of the second end connection 3G communication chip of resistance R2 are stated, the 8 of the second end connection 3G communication chip of the resistance R3 are drawn Foot, 38 pins of the collector c connection 3G communication chip of the triode VT1, the first end and resistance of base stage b connection resistance R4 The first end of R5, the of the second end connection first end of capacitor C2 of resistance R4, the emitter e of triode VT1 and resistance R4 Two ends, the second end of resistance R5 and the output end of driving circuit connect, and the second end of capacitor C2 is connected with the second end of capacitor C3 And be grounded, the first end of capacitor C3 is connected with the first end of capacitor C2,3G communication chip 2,5,6,16,17,18,20,23, 24,29,32,35,37,39 pins are grounded, and 21,22 pins are connected and connect power circuit, and 29,32 pins are both connected to capacitor The second end of C3.

3. 3G module according to claim 2, which is characterized in that the amplifying circuit includes communication single-chip microcontroller, capacitor C4- C14 and voltage-stabiliser tube, the first end of capacitor C4, the first end of capacitor C5, the first end of capacitor C6, the first end of capacitor C8, electricity Hold the VCC of the first end of C9, the first end of capacitor C10, the first end of capacitor C11,1 pin of voltage-stabiliser tube and communication single-chip microcontroller Pin be all connected with VCC power supply, the second end of capacitor C4, the second end of capacitor C5, the second end of capacitor C6, capacitor C8 second End, 2 pins of the second end of capacitor C9, the second end of capacitor C10, the second end of capacitor C11 and voltage-stabiliser tube, capacitor C7 Two ends, the second end of capacitor C12, the second end of capacitor C13, the second end of capacitor C14 and communicate single-chip microcontroller GND pin it is equal Ground connection, the first end of capacitor C12, the first end of capacitor C13, the first end of capacitor C14 are all connected with the input terminal of power circuit, surely 3 pins of pressure pipe and the first end of capacitor C7 are all connected with the output end of power circuit.

4. 3G module according to claim 3, which is characterized in that be connected with electricity between the 3G communication chip and single-chip microcontroller Hinder the P1.1 pin of the first end connection single-chip microcontroller of R6, resistance R7, resistance R8 and triode VT2, resistance R6, second end connection 25 pins of 3G communication chip, the P1.0 pin of the first end connection single-chip microcontroller of resistance R7, second end connect 3G communication chip 26 pins, the base stage b of the first end connecting triode VT2 of resistance R8, second end connect the P3.4 pin of single-chip microcontroller, triode The emitter e of VT2 is grounded, the second end of collector c connection resistance R5.

5. 3G module according to claim 4, which is characterized in that the filter circuit includes electrostatic protection chip, resistance R9-R17, diode D1, diode D2, triode VT3, triode VT4 and capacitor C15, the RO pin of electrostatic protection chip The RXD/ pin of single-chip microcontroller is connected, REB pin is connected with DE pin, and is connected on the T1CL pin of single-chip microcontroller, and DI pin connects The TXD/ pin of single-chip microcontroller is connect, the first end of VCC pin, the first end of resistance R11 and capacitor C15 is all connected with power supply VCC, and B draws Foot connects the first end of resistance R9 and the first end of resistance R13, and A pin connects the second end of resistance R9, GND pin, resistance R10 Second end, the anode of diode D2, the anode of diode D1, the second end of capacitor C15, the second end of resistance R14, resistance The emitter e of the second end of R16, the emitter e of triode VT3 and triode VT4 is grounded, and the second end of resistance R10 connects The second end of connecting resistance R9, the second end of the second end connection resistance R9 of resistance R11 and the first end of resistance R12, resistance R12's Second end connect diode D1 cathode, resistance R13 second end connection diode D2 cathode, the first end of resistance R14 and The base stage b of triode VT3 is all connected with the first end of resistance R15, and the second end of resistance R15 connects 13 pins of 3G communication chip, The collector c of triode VT3 is exported, the collector c output of triode VT4, the first end and resistance of base stage b connection resistance R16 The first end of R17,36 pins of the second end connection 3G communication chip of resistance R17.

6. 3G module according to claim 5, which is characterized in that the power circuit includes capacitor C16-C24, pressure stabilizing Device, power supply chip, resistance R18, resistance R19, diode D3, diode D4, diode D5, diode D6, diode D7, it is described The first end of capacitor C16, capacitor C17 first end, 2 pins of voltage-stablizer, 4 pins are connected, the second end and capacitor of capacitor C16 C17 second end is connected and is grounded, and 3 pins of voltage-stablizer connect power supply VCC, and 1 pin is connected and connects with the first end of capacitor C18 Ground, the second end of capacitor C18, the second end of capacitor C19 are connected with the second end of resistance R18, and connect capacitor C7 first end, The second end of capacitor C1 and 22 pins of 3G communication chip, the cathode and power supply core of the first end connection diode D3 of capacitor C19 2 pins of piece, the anode of diode D3,4 pins of power supply chip, 5 pins, 6 pins, 7 pins, 8 pins and capacitor C20 First end is grounded, and the first end of the 3 pins connection resistance R19 of power supply chip, 1 pin connects the cathode and capacitor of diode D6 The first end of the second end of C20, the first end of resistance R18, the first end of capacitor C21 and resistance R19 is connected, resistance R18's Second end is connected with the second end of capacitor C21, the second end of resistance R19, the second end of capacitor C22, the second end of capacitor C23, The second end of capacitor C24 is grounded, and the first end of capacitor C22, the first end of capacitor C23, the first end of capacitor C24 are connected and connect The cathode of diode D6 is connect, the anode of diode D4 and the anode of diode D7 are grounded, and the cathode of diode D4 connects two poles The cathode of the anode of pipe D5, diode D5 be connected with the cathode of diode D6 and connect voltage-stabiliser tube 3 pins and capacitor C14 One end.

7. 3G module according to claim 6, which is characterized in that the anti-clutter circuit includes fuse FU, capacitor C25, filter and transformer T, the first end of the fuse FU and the second end of capacitor C25 are all connected with the alternating current of 220V Source, second end connect the first end of capacitor C25, the first end of the 1 pin connection capacitor C25 of filter, and 2 pins connect capacitor The second end of C25,3 pins connect 1 pin of transformer T, and 4 pins connect 2 pins of transformer T, and 3 pins of transformer T connect The cathode of diode D4 is connect, 4 pins connect the anode of diode D6.

8. 3G module according to claim 7, which is characterized in that the 3G module further includes work light HLG, communication Indicator light HLY, power supply indicator HLR, resistance R20, resistance R21 and capacitor C26, the second end of the work light HLG The first end of resistance R20 is connected, first end connects the second end of capacitor C19, the second end connecting triode VT3's of resistance R20 The first end of the second end connection resistance R21 of collector c, communication indicator light HLY, first end connect the of work light HLG Two ends, the second end connection capacitor C26's of the collector c of the second end connecting triode VT4 of resistance R21, power supply indicator HLR First end, first end connect the first end of capacitor C14, the second end ground connection of capacitor C26.

9. 3G module according to claim 8, which is characterized in that the anti-clutter circuit is connected by connector XS1 The AC power source of 220V, for filter circuit by connector XS2 connection mainboard, 1 pin of connector XS1 connects the of fuse FU One end, 2 pins connect the second end of capacitor C25, the second end of the 1 pin connection resistance R12 of connector XS2,2 pins connection two The cathode of pole pipe D2.

10. 3G module according to claim 9, which is characterized in that the 3G module further includes passing for connecting temperature and humidity The socket XS3 of sensor, the socket XS4 for connecting vocs sensor, resistance R22, resistance R23, resistance R24 and capacitor C27, 3 pins of 1 pin of socket XS3, the second end of capacitor C27 and socket XS4 are all connected with the GND pin of single-chip microcontroller, socket XS3's 2 pins connect the first end of resistance R22, and 4 pins of 3 pins, the first end of capacitor C27 and socket XS4 are all connected with single-chip microcontroller VCC pin, the P3.5 pin of the second end connection single-chip microcontroller of resistance R22, the first of the 1 pin connection resistance R24 of socket XS4 End, the first end of 2 pins connection resistance R23, the P3.6 pin of the second end connection single-chip microcontroller of resistance R24, the second of resistance R23 The P3.7 pin of end connection single-chip microcontroller.