CN206759497U

CN206759497U - ASK modulation type WLAN systems

Info

Publication number: CN206759497U
Application number: CN201720558874.8U
Authority: CN
Inventors: 罗小可
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-05-19
Filing date: 2017-05-19
Publication date: 2017-12-15
Anticipated expiration: 2027-05-19

Abstract

The utility model discloses a kind of ASK modulation types WLAN system, including host computer, main frame and multiple slaves, host computer passes sequentially through the communication between communication protocol adapter and two full-duplex communication modules realizations and main frame, main frame is also respectively connected with main ASK modulation receiving modules and main ASK modulate emissions module, each slave is connected with modulates receiving module and from ASK modulate emission modules from ASK accordingly, main ASK modulates receiving module and passes through antenna communication between ASK modulate emission modules, main ASK modulate emissions module and from ASK modulate receiving module between also by antenna communication.The utility model enable host computer away from work LAN live area, effectively compensate for the defects of wireless data can not pass through too many mechanical obstacles thing, ensure that in the case where realizing remote monitoring host computer communication reliability.

Description

ASK modulation type WLAN systems

Technical field

WLAN system is the utility model is related to, more particularly to ASK modulation type WLAN systems.

Background technology

In the control application of reality, Alternative Complicated Flow, multi-point data acquisition and the application for coordinating to control are more next More, single leans on industrial computer or Large PLC to realize that these controls can not meet primary demand.Its concrete reason master It is：

(1) industrial computer or Large PLC price are too high, and single is that controller is all more total than whole equipment budget being sold in itself Much higher times of price；

(2) installation of these equipment and cabling are especially complex, and many control signals and power line are drawn in pressure repeatedly Straight and bending contraction state, easily abrasion, aging；

(3) it is higher to the technical requirements of installer and plant maintenance personnel；

Current WLAN closely uses WIFI or GPRS/GSM more, both the defects of be mainly shown as： WIFI transmission range is small, and energy is small；It is too high that the defects of GPRS, is mainly manifested in cost of use.

Utility model content

Purpose of utility model：The purpose of this utility model is to provide a kind of ASK that can realize that transmission, cost are low over long distances and adjusted Type WLAN system processed.

Technical scheme：ASK modulation types WLAN system described in the utility model, including host computer, main frame and Multiple slaves, host computer passes sequentially through communication protocol adapter and two full-duplex communication modules are realized and leading between main frame Letter, main frame are also respectively connected with main ASK modulation receiving modules and main ASK modulate emissions module, each slave and are connected with accordingly Receiving module is modulated from ASK and from ASK modulate emission modules, main ASK modulation receiving modules and between ASK modulate emission modules By antenna communication, main ASK modulate emissions module and from ASK modulate receiving module between also by antenna communication.

Further, the base stage connection of the main ASK modulate emissions module including the first triode Q1, the first triode Q1 the One resistance R1 one end, first resistor R1 other end connection main frame, first resistor R1 one end is also connected with the first crystal oscillator O1's Clock signal output terminal, the first crystal oscillator O1 clock signal reference end ground connection, the first triode Q1 electricity of emitter stage connection second R2 one end is hindered, second resistance R2 other end ground connection, second resistance R2 one end is also respectively connected with the first electric capacity C4 one end With the second electric capacity C5 one end, the second electric capacity C5 other end is grounded, and the first electric capacity C4 other end connects the first inductance L3's One end, the first inductance L3 other end connection power supply.

Further, the main ASK modulation receiving module includes model SYN470R main ASK modulation reception chips, main The ANT ends of ASK modulation reception chips connect the second inductance L2 one end, the second inductance L2 other end ground connection, the second inductance L2 One end be also connected with the 3rd electric capacity C1 one end, the 3rd electric capacity the C1 other end connection first antenna ANT1, first antenna ANT1 The 3rd inductance L1 one end, the 3rd inductance L1 other end ground connection are also connected with, the 3rd electric capacity C1 other end is also connected with the 4th electricity Hold C2 one end, the 4th electric capacity C2 other end ground connection.

Further, the full-duplex communication module includes model MAX488 chip.

Further, the base stage connection from ASK modulate emissions module including the second triode Q2, the second triode Q2 the Three resistance R4 one end, 3rd resistor R4 other end connection slave, 3rd resistor R4 one end is also connected with the second crystal oscillator O2's Clock signal output terminal, the second crystal oscillator O2 clock signal reference end ground connection, the second triode Q2 electricity of emitter stage connection the 4th R5 one end is hindered, the 4th resistance R5 other end ground connection, the 4th resistance R5 one end is also respectively connected with the 5th electric capacity C41 one end With the 6th electric capacity C51 one end, the 6th electric capacity C51 other end is grounded, and the 5th electric capacity C41 other end connects the 4th inductance L31 one end, the 4th inductance L31 other end connection power supply.

Further, it is described to modulate reception chip from ASK from ASK modulation receiving modules including model SYN470R, from The ANT ends of ASK modulation reception chips connect the 5th inductance L21 one end, the 5th inductance L21 other end ground connection, the 5th inductance L21 one end is also connected with the 7th electric capacity C11 one end, and the 7th electric capacity C11 other end connects the second antenna ANT2, the second antenna ANT2 is also connected with the 6th inductance L11 one end, the 6th inductance L11 other end ground connection, and the 7th electric capacity C11 other end is also connected with 8th electric capacity C21 one end, the 8th electric capacity C21 other end ground connection.

Further, the main frame includes model STC12C5A60S2 chip.

Further, the slave includes model PIC16F688 chip.

Further, the system uses MODBUS agreements as communication protocol.

Beneficial effect：Compared with prior art, the utility model has following beneficial effect：

1) full-duplex communication is carried out by two full-duplex communication modules between host computer and main frame so that host computer can Live area away from work LAN, effectively compensate for the defects of wireless data can not pass through too many mechanical obstacles thing, is realizing The reliability of host computer communication is ensure that in the case of remote monitoring；

2) transceiver channel is separate, can realize the flexible control for receiving and sending signal；

3) chip cost that main frame, slave and host computer use is low, and due to being radio communication, so convenient disassembly；

4) controlled with the wirelessly wired data transfer for realizing the confined space of replacement with equipment；

5) transparent transmission of half-duplex information is realized using ASK on-off keyings.

Brief description of the drawings

Fig. 1 is the system block diagram in the utility model embodiment；

Fig. 2 is the block diagram of No. 1 slave in the utility model embodiment；

Fig. 3 is the partial circuit diagram between main frame and host computer in the utility model embodiment；

Fig. 4 is the partial circuit diagram of the slave in the utility model embodiment.

Embodiment

Present embodiment discloses a kind of ASK modulation types WLAN system, as shown in figure 1, including upper Machine, main frame and multiple slaves, host computer passes sequentially through communication protocol adapter and two full-duplex communication modules are realized and main frame Between communication, main frame is also respectively connected with main ASK modulation receiving module and main ASK modulate emissions module, as shown in Fig. 2 each Slave is all connected with modulates receiving module and from ASK modulate emission modules from ASK accordingly, main ASK modulation receiving modules with from Also lead between modulating receiving module by antenna communication, main ASK modulate emissions module and from ASK between ASK modulate emission modules Cross antenna communication.Full-duplex communication module includes model MAX488 chip.Main frame includes model STC12C5A60S2's Chip.Slave includes model PIC16F688 chip.The system is using MODBUS agreements as communication protocol：When main frame is sent out During the number of delivering letters, main ASK modulation receiving module is closed；When main frame reception signal, main ASK modulate emissions module is closed；Slave leads to Reception state often is at, only when receiving host computer control signal, needing to reply just by from ASK modulate emission modules Transmission signal.

As shown in figure 3, the base stage connection of main ASK modulate emissions module including the first triode Q1, the first triode Q1 the One resistance R1 one end, first resistor R1 other end connection main frame, first resistor R1 one end is also connected with the first crystal oscillator O1's Clock signal output terminal, the first crystal oscillator O1 clock signal reference end ground connection, the first triode Q1 electricity of emitter stage connection second R2 one end is hindered, second resistance R2 other end ground connection, second resistance R2 one end is also respectively connected with the first electric capacity C4 one end With the second electric capacity C5 one end, the second electric capacity C5 other end is grounded, and the first electric capacity C4 other end connects the first inductance L3's One end, the first inductance L3 other end connection power supply.

Main ASK modulation receiving module includes model SYN470R main ASK modulation reception chips, and main ASK modulation receives core The ANT ends of piece connect the second inductance L2 one end, the second inductance L2 other end ground connection, and the second inductance L2 one end is also connected with the Three electric capacity C1 one end, the 3rd electric capacity the C1 other end connection first antenna ANT1, first antenna ANT1 are also connected with the 3rd inductance L1 one end, the 3rd inductance L1 other end ground connection, the 3rd electric capacity C1 other end are also connected with the 4th electric capacity C2 one end, and the 4th Electric capacity C2 other end ground connection.

As shown in figure 4, from the base stage connection of ASK modulate emissions module including the second triode Q2, the second triode Q2 the Three resistance R4 one end, 3rd resistor R4 other end connection slave, 3rd resistor R4 one end is also connected with the second crystal oscillator O2's Clock signal output terminal, the second crystal oscillator O2 clock signal reference end ground connection, the second triode Q2 electricity of emitter stage connection the 4th R5 one end is hindered, the 4th resistance R5 other end ground connection, the 4th resistance R5 one end is also respectively connected with the 5th electric capacity C41 one end With the 6th electric capacity C51 one end, the 6th electric capacity C51 other end is grounded, and the 5th electric capacity C41 other end connects the 4th inductance L31 one end, the 4th inductance L31 other end connection power supply.

Reception chip is modulated from ASK from ASK modulation receiving modules including model SYN470R, is modulated from ASK and receives core The ANT ends of piece connect the 5th inductance L21 one end, and the 5th inductance L21 other end ground connection, the 5th inductance L21 one end also connects Connect the 7th electric capacity C11 one end, the 7th electric capacity C11 other end connects the second antenna ANT2, and the second antenna ANT2 is also connected with the Six inductance L11 one end, the 6th inductance L11 other end ground connection, the 7th electric capacity C11 other end are also connected with the 8th electric capacity C21 One end, the 8th electric capacity C21 the other end ground connection.

Claims

1.ASK modulation type WLAN systems, it is characterised in that：Including host computer, main frame and multiple slaves, host computer according to The secondary communication realized by communication protocol adapter and two full-duplex communication modules between main frame, main frame are also respectively connected with master ASK modulates receiving module and main ASK modulate emissions module, each slave be connected with accordingly from ASK modulation receiving modules and From ASK modulate emission modules, main ASK modulation receiving module and from passing through antenna communication, main ASK between ASK modulate emission modules Modulate emission module and from ASK modulate receiving module between also by antenna communication.

2. ASK modulation types WLAN system according to claim 1, it is characterised in that：The main ASK modulation hair Penetrating module includes the first triode Q1, the first triode Q1 base stage connection first resistor R1 one end, and first resistor R1's is another One end connects main frame, and first resistor R1 one end is also connected with the first crystal oscillator O1 clock signal output terminal, the first crystal oscillator O1 when Clock signal criterion end is grounded, the first triode Q1 emitter stage connection second resistance R2 one end, the second resistance R2 other end Ground connection, second resistance R2 one end is also respectively connected with the first electric capacity C4 one end and the second electric capacity C5 one end, the second electric capacity C5 Other end ground connection, the first electric capacity C4 other end connects the first inductance L3 one end, the first inductance L3 other end connection electricity Source.

3. ASK modulation types WLAN system according to claim 1, it is characterised in that：The main ASK modulation connects Receiving module includes model SYN470R main ASK modulation reception chips, the electricity of ANT ends connection second of main ASK modulation reception chip Feel L2 one end, the second inductance L2 other end ground connection, the second inductance L2 one end is also connected with the 3rd electric capacity C1 one end, and the 3rd The electric capacity C1 other end connection first antenna ANT1, first antenna ANT1 is also connected with the 3rd inductance L1 one end, the 3rd inductance L1 Other end ground connection, the 3rd electric capacity C1 other end is also connected with the 4th electric capacity C2 one end, the 4th electric capacity C2 other end ground connection.

4. ASK modulation types WLAN system according to claim 1, it is characterised in that：The full-duplex communication Module includes model MAX488 chip.

5. ASK modulation types WLAN system according to claim 1, it is characterised in that：Described modulated from ASK is sent out Penetrating module includes the second triode Q2, the second triode Q2 base stage connection 3rd resistor R4 one end, and 3rd resistor R4's is another One end connects slave, and 3rd resistor R4 one end is also connected with the second crystal oscillator O2 clock signal output terminal, the second crystal oscillator O2 when Clock signal criterion end is grounded, and the second triode Q2 emitter stage connects the 4th resistance R5 one end, the 4th resistance R5 other end Ground connection, the 4th resistance R5 one end is also respectively connected with the 5th electric capacity C41 one end and the 6th electric capacity C51 one end, the 6th electric capacity C51 other end ground connection, the 5th electric capacity C41 other end connect the 4th inductance L31 one end, the 4th inductance L31 other end Connect power supply.

6. ASK modulation types WLAN system according to claim 1, it is characterised in that：It is described to be connect from ASK modulation Receiving module includes the model SYN470R electricity of ANT ends connection the 5th modulated reception chip from ASK, reception chip is modulated from ASK Feel L21 one end, the 5th inductance L21 other end ground connection, the 5th inductance L21 one end is also connected with the 7th electric capacity C11 one end, The 7th electric capacity C11 other end connects the second antenna ANT2, and the second antenna ANT2 is also connected with the 6th inductance L11 one end, and the 6th Inductance L11 other end ground connection, the 7th electric capacity C11 other end are also connected with the 8th electric capacity C21 one end, the 8th electric capacity C21's The other end is grounded.

7. ASK modulation types WLAN system according to claim 1, it is characterised in that：The main frame includes type Number be STC12C5A60S2 chip.

8. ASK modulation types WLAN system according to claim 1, it is characterised in that：The slave includes type Number be PIC16F688 chip.

9. ASK modulation types WLAN system according to claim 1, it is characterised in that：The system uses MODBUS agreements are as communication protocol.