CN209572023U

CN209572023U - A kind of protocol conversion apparatus based on Zigbee wireless communication

Info

Publication number: CN209572023U
Application number: CN201920562742.1U
Authority: CN
Inventors: 武安河; 赵景隆; 郭昊
Original assignee: Shanghai Run'ou Technology Co Ltd
Current assignee: Shanghai Run'ou Technology Co Ltd
Priority date: 2019-04-24
Filing date: 2019-04-24
Publication date: 2019-11-01
Anticipated expiration: 2029-04-24

Abstract

The utility model discloses a kind of protocol conversion apparatus based on Zigbee wireless communication, belong to protocol conversion apparatus field.Including RS485 interface, RS232 interface, master controller, Zigbee wireless transport module and power module, the RS485 interface, RS232 interface, master controller and Zigbee wireless transport module are connect with power module, and the RS485 interface, RS232 interface, Zigbee wireless transport module are connect with master controller.The utility model solves existing power supply unit and acquisition equipment carries out data acquisition by way of wired connection, the difficulty that the complexity and wiring for increasing route are implemented, lead to the problem of transmitting power consumption increase, time delay growth, also adding line cost and installation implementation cost.

Description

A kind of protocol conversion apparatus based on Zigbee wireless communication

Technical field

The utility model belongs to protocol conversion apparatus field, is related to a kind of protocol conversion dress based on Zigbee wireless communication It sets.

Background technique

Zigbee is the net application technology of the measured long-range monitoring of one kind, control and sensor, is a kind of economy Efficient standard type Solution of Wireless LAN, the peripheral circuit released around Zigbee chip technology, referred to as " Zigbee mould Block ", common Zigbee module are all to follow the international standard of IEEE802.15.4, and operate in the frequency range of 2.4GHZ, tool Have that message transmission rate is low, low in energy consumption, at low cost, network capacity is big, short, network the self-organizing of delay, self-healing ability are strong, communication Reliable and highly-safe data feature, is mainly used in consumer electronics product, energy management and efficiency, health care, family Front yard automation, telecommunications service, building automatic and industrial automation.

In the facilities such as the substation of power industry, switching station, switchgear house, indoor computer room, all kinds of confessions of real-time monitoring are needed The operation data of electric equipment ensures equipment safety operation, due to the particularity of these equipment operating environments, acquires to for data Communication line laying require it is very high, it is necessary to meet all kinds of safety codes and technical indicator.

And the communication line of existing data acquisition mainly passes through that actual track connects all kinds of power supply units and acquisition is set It is standby, different type is connected with the equipment of different agreement it is necessary to independent cabling, the complexity of route is increased, increases cloth Line implement difficulty, cause power supply unit and acquire equipment between transmission power consumption increase, time delay increase, also add route at The expense of this and installation implementation.

Therefore, to solve the above-mentioned problems, the utility model proposes a kind of agreements based on Zigbee wireless communication to turn Changing device.

Summary of the invention

The purpose of this utility model is that: a kind of protocol conversion apparatus based on Zigbee wireless communication is provided, is solved Existing power supply unit and acquisition equipment carry out data acquisition by way of wired connection, increase the complexity and cloth of route The difficulty that line is implemented leads to the problem of transmitting power consumption increase, time delay growth, also adding line cost and installation implementation cost.

The technical solution adopted in the utility model is as follows:

A kind of protocol conversion apparatus based on Zigbee wireless communication, including RS485 interface, RS232 interface, main control Device, Zigbee wireless transport module and power module, the RS485 interface, RS232 interface, master controller and Zigbee are wireless Transmission module is connect with power module, and the RS485 interface, RS232 interface, Zigbee wireless transport module are and main control Device connection, the circuit of the RS485 interface and the circuit of RS232 interface are connect with the control circuit including master controller U2, The circuit connection of the control circuit and Zigbee wireless transport module U3, the circuit of the RS485 interface include being sequentially connected Transceiver U4, protection chip U5 and connector CN401, the circuit of the RS232 interface includes transceiver U6 interconnected With connector CN501.

Further, transceiver U4 described in the circuit of the RS485 interface, protection chip U5 and connector CN401 and The specific connection of its peripheral circuit is as follows: 31 He of pin of pin 1 and pin 4 connection the master controller U2 of the transceiver U4 Pin 30, pin 5 are grounded, and pin 6 connects resistance R404 and R406 in parallel, the R404 other end ground connection, and pin 7 connects simultaneously The resistance R405 and R407 of connection, the R405 other end connect 3.3V power supply, and pin 8 connects capacitor C403 and 3.3V power supply；Institute The pin 3 for stating protection chip U5 is grounded, and pin 2 is connect with R406 and fuse RV401, pin 1 and R407 and fuse RV402 Connection, be connected between the fuse RV401 and RV402 discharge tube D403 and two concatenated discharge tube D401 and D402；The pin 1 of the connector CN401 is connect with RV402, and pin 2 is connect with RV401, and pin 10 connects resistance R408, Pin 12 connects resistance R409, and pin 9 and 11 connects 3.3V power supply, and pin 4,13 and 14 is grounded, remaining pin empties.

Further, the circuit of the RS485 interface further includes a patch B401, the connection of the one end the patch B401 3.3V power supply is grounded after the other end shunt capacitance C401 and C402.

Further, transceiver U6 described in the circuit of the RS232 interface and connector CN501 and its peripheral circuit Specific connection is as follows: connecting capacitor C504 between the pin 1 and pin 3 of the transceiver U6, connects between pin 4 and pin 5 Capacitor C505, pin 2 connect capacitor C502, and pin 6 connects capacitor C503, pin 9 and pin 10 be separately connected resistance R505 and The pin 13 and pin 12 of master controller U2 are connected after R506, pin 15 is grounded, and pin 16 connects 3.3V power supply, the transceiver The pin 3 of the connector CN501 is accessed after the connection of the pin 7 resistance R502 of U6, the pin 8 of the transceiver U6 connects resistance The pin 1 of the connector CN501 is connected after R501, and discharge tube D501 and D502 are also respectively connected on pin 1 and pin 3, Pin 10 and pin 12 are separately connected resistance R503 and R504, and pin 9 and pin 11 connect 3.3V power supply, pin 13 and pin 14 Ground connection.

Further, the control circuit further includes crystal oscillator CRY201, transistor Q201 and diode assembly LED201, The pin 3 and pin 4 of pin 34 and pin 37 connection SWD the downloading J1 of the master controller U2, for the emulation of control circuit, The pin 3 and pin 4 of the J1 also each connects resistance R202 and R203, and the pin 1 of J1 connects 3.3V power supply, and pin 2 is grounded, institute The pin 5 and pin 6 for stating master controller U2 connect crystal oscillator CRY201, one resistance R201 of parallel connection on the crystal oscillator CRY201, institute One end connection capacitor C208 of crystal oscillator CRY201 is stated, the other end connects capacitor C207；The pin 30 of the master controller U2 also connects One end of connecting resistance R206, R206 connect R207, and the other end connects the base stage of transistor Q201, the collection of the transistor Q201 Electrode connects 3.3V power supply after connecting R208, is also connected with the pin 3 of transceiver U4 in RS485 interface circuit；The master controller The pin 7 of U2 connects resistance R209, and pin 39 connects set key S1, and pin 40 connects diode assembly after connecting resistance R204 The pin 3 of LED201, the pin 1 of the LED201 connect 3.3V power supply after connecting resistance R205, and pin 2 and 4 is grounded, described The pin 40 of master controller U2 connects the pin 3 of Zigbee wireless transport module U3, the pin 21 of the master controller U2 and draws Foot 22 connects the pin 6 and pin 5 of Zigbee wireless transport module U3, the pin 24 of the U2 connect capacitor C203 in parallel, C204, C205 and C206.

Further, the control circuit further includes a patch B201, and the one end the patch B201 connects 3.3V electricity Source is grounded after the other end shunt capacitance C201 and C202.

Further, the master controller U2 uses the STM32 Series of MCU based on ARM Cortex-M kernel.

Further, the circuit of the Zigbee wireless transport module U3 includes Zigbee wireless transport module U3 and patch The pin 5 of piece B301, the U3 connect the pin 22 of connection master controller U2 after resistance R301, after pin 6 connects resistance R302 The pin 21 of master controller U2 is connected, pin 3 connects the pin 40 of connection master controller U2 after resistance R305, and pin 4 connects net The pin 7 of key S2, the U2 connect the pin 3 of connection diode assembly LED301 after resistance R303, and the pin 8 of the U2 connects The pin 1 of diode assembly LED301 is connected after resistance R304, pin 2 and 4 is grounded, and the one end the patch B301 connects 3.3V electricity Source is grounded after the other end shunt capacitance C301 and C302.

Further, the power module includes power-switching circuit, and 5V power supply is converted to the power supply of 3.3V, the electricity Power-switching circuit include USB interface CN101, voltage-stablizer U1, two diode D101 and D102 and two patch B101 and Diode D101 is connected between the pin 1 and pin 5 of B102, the CN101, one end of the D101 connects patch B101, separately One end connects patch B102, and between patch B101 and B102 successively after shunt capacitance CP101, C101 and C102 with pressure stabilizing Device U1 connection, after output pin 2 and pin 4 connection of the U1 successively after shunt capacitance C103, C104 and C105 with two poles Pipe D102 connection, finally output+3.3V voltage, the pin 1 of the U1 are grounded, and the pin 6,7,8 and 9 of the CN101 mutually interconnects Connect with being followed by casing, the casing by after resistance R101 and capacitor C106 be signally connected.

In conclusion by adopting the above-described technical solution, the beneficial effects of the utility model are:

1. a kind of protocol conversion apparatus based on Zigbee wireless communication, the present apparatus is arranged beside power equipment, lead to It crosses transmission line and power equipment output signal is transmitted to the RS485 of the present apparatus or after RS232 interface converted, by master controller Signal after conversion is wirelessly transmitted to the monitoring center of electric system by control Zigbee wireless transport module, then by monitoring center Receive signal, while the also transmittable control command backtracking of monitoring center is to power equipment, by no wire routing communication line, The two-way transparent wireless transmission of data is realized with this, so that realizing can also be counted between different type, the equipment of different agreement According to acquisition and forwarding, and the characteristics of combination Zigbee wireless transport module, the electrical isolation between each node is realized, this dress is made Setting has many advantages, such as that safety and reliability is high, time delay is low, easy for construction, wiring is simple, at low cost.

2. the utility model is not necessarily to special cabling in installation and implementation, convenient and efficient, it can be used for power equipment data and adopt A variety of occasions such as collection, long-range control power equipment, and a variety of different power equipments of two kinds of interface adaptations need, and increase the present apparatus The scope of application.

Detailed description of the invention

It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also To obtain other relevant attached drawings according to these attached drawings, in which:

Fig. 1 is a kind of connection block diagram of protocol conversion apparatus based on Zigbee wireless communication；

Fig. 2 is the circuit diagram of RS485 interface in the utility model；

Fig. 3 is the circuit diagram of RS232 interface in the utility model；

Fig. 4 is the electric operation control circuit figure in the utility model；

Fig. 5 is the circuit diagram of the Zigbee wireless transport module in the utility model；

Fig. 6 is the power-switching circuit figure in the utility model.

Specific embodiment

In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only to explain this Utility model is not used to limit the utility model, i.e. described embodiment a part of the embodiment for being the utility model, Instead of all the embodiments.Usually being described herein as can be with each with the component of the utility model embodiment shown in the accompanying drawings Different configurations is planted to arrange and design.

Therefore, requirement is not intended to limit to the detailed description of the embodiments of the present invention provided in the accompanying drawings below The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Reality based on the utility model Apply example, those skilled in the art's every other embodiment obtained without making creative work belongs to The range of the utility model protection.

It should be noted that the relational terms of term " first " and " second " or the like be used merely to an entity or Operation is distinguished with another entity or operation, and without necessarily requiring or implying between these entities or operation, there are any This actual relationship or sequence.Moreover, the terms "include", "comprise" or its any other variant be intended to it is non-exclusive Property include so that include a series of elements process, method, article or equipment not only include those elements, but also Further include other elements that are not explicitly listed, or further include for this process, method, article or equipment it is intrinsic Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including described There is also other identical elements in the process, method, article or equipment of element.

A kind of protocol conversion apparatus based on Zigbee wireless communication, solves existing power supply unit and acquisition equipment passes through The mode of wired connection carries out data acquisition, and the difficulty that the complexity and wiring for increasing route are implemented causes to transmit power consumption increasing Greatly, the problem of time delay increases, and also adds line cost and installation implementation cost.

The utility model may be provided at beside power equipment, and power equipment output signal is transmitted to this dress by transmission line After the RS485 or RS232 interface set is converted, by main controller controls Zigbee wireless transport module by the letter after conversion It number is wirelessly transmitted to the monitoring center of electric system, then signal, while the also transmittable control of monitoring center are received by monitoring center Order backtracking realizes the two-way transparent wireless transmission of data with this by no wire routing communication line to power equipment, from And data acquisition and forwarding can also be carried out by realizing between different type, the equipment of different agreement, and Zigbee is combined to be wirelessly transferred The characteristics of module, realizes the electrical isolation between each node, make the present apparatus have safety and reliability it is high, it is easy for construction, It is routed the advantages that simple, at low cost.

It is described in further detail below with reference to feature and performance of the embodiment to the utility model.

Embodiment one

The preferred embodiment of the utility model provides a kind of protocol conversion apparatus based on Zigbee wireless communication, such as Shown in Fig. 1, a kind of protocol conversion apparatus based on Zigbee wireless communication, including RS485 interface, RS232 interface, main control Device, Zigbee wireless transport module and power module, the RS485 interface, RS232 interface, master controller and Zigbee are wireless Transmission module is connect with power module, and the RS485 interface, RS232 interface, Zigbee wireless transport module are and main control Device connection, the circuit of the RS485 interface and the circuit of RS232 interface are connect with the control circuit including master controller U2, The circuit connection of the control circuit and Zigbee wireless transport module U3, the circuit of the RS485 interface include being sequentially connected Transceiver U4, protection chip U5 and connector CN401, the circuit of the RS232 interface includes transceiver U6 interconnected With connector CN501.

Further, the circuit of the RS485 interface is as shown in Fig. 2, the transceiver U4, protection chip U5 and connector The specific connection of CN401 and its peripheral circuit is as follows: pin 1 and pin 4 the connection master controller U2's of the transceiver U4 draws Foot 31 and pin 30, pin 5 are grounded, and pin 6 connects resistance R404 and R406 in parallel, the R404 ground connection, and pin 7 connects Resistance R405 and R407 in parallel, the R405 connection 3.3V power supply, pin 8 connect capacitor C403 and 3.3V power supply；It is described anti- The pin 3 for protecting chip U5 is grounded, and pin 2 is connect with R406 and fuse RV401, and pin 1 and R407 and fuse RV402 connect It connects, discharge tube D403 and two concatenated discharge tube D401 and D402 is connected between the fuse RV401 and RV402； The pin 1 of the connector CN401 is connect with RV402, and pin 2 is connect with RV401, and pin 10 connects resistance R408, pin 12 Resistance R409 is connected, pin 9 and 11 connects 3.3V power supply, and pin 4,13 and 14 is grounded, remaining pin empties.

Preferably, the transceiver U4 uses the transceiver of SP3485EN model；The protection chip U5 uses PSM712 The RS485 carrying out surge protection chip of model；Increase PSM712 and carry out voltage clamp, it is ensured that bus voltage does not exceed the chip limit Value；The connector CN401 uses the RJ45 connector with LED light；The fuse RV401 and RV402 is all made of The patch self-recovery fuse of SMD1206B010TF model；Described discharge tube D401, D402 and D403 are all made of P0080SB type Number TSS semiconductor discharge tube.

Preferably, the patch B401 uses the patch magnetic bead of CBW201209U800T model, and elimination is present in transmission line In RF noise, have miniaturization, lightweight, in radio noise frequency range with high impedance and eliminate transmission line in electricity The advantages of magnetic disturbance, can closing magnetic path structure, preferably elimination signal string around, have fabulous Magnetic Shielding Effectiveness, can reduce D.C. resistance avoids generating useful signal excessive decaying, to reduce the transmission power consumption of the present apparatus.

Further, the circuit of the RS232 interface is as shown in figure 3, the transceiver U6 and connector CN501 and its outer The specific connection for enclosing circuit is as follows: capacitor C504, pin 4 and pin 5 are connected between the pin 1 and pin 3 of the transceiver U6 Between connect capacitor C505, pin 2 connect capacitor C502, pin 6 connect capacitor C503, pin 9 and pin 10 are separately connected electricity The pin 13 and pin 12 of master controller U2 are connected after resistance R505 and R506, pin 15 is grounded, and pin 16 connects 3.3V power supply, institute State transceiver U6 pin 7 connect resistance R502 after access the pin 3 of the connector CN501, the pin of the transceiver U6 The pin 1 of the connector CN501 is connected after 8 connection resistance R501, and discharge tube is also respectively connected on pin 1 and pin 3 D501 and D502, pin 10 and pin 12 are separately connected resistance R503 and R504, and pin 9 and pin 11 connect 3.3V power supply, draw Foot 13 and pin 14 are grounded.

Preferably, the transceiver U6 uses the RS232 transceiver of the model SP3232EEN-L/TR of SOIC16 encapsulation； The connector CN501 also uses the RJ45 connector with LED light, and the discharge tube D501 and D502 is all made of P0150SD type Number TSS semiconductor discharge tube.

Further, the control circuit is as shown in figure 4, further include crystal oscillator CRY201, transistor Q201 and diode group The pin 3 and pin 4 of pin 34 and pin 37 connection SWD the downloading J1 of part LED201, the master controller U2, for controlling electricity The emulation on road, the pin 3 and pin 4 of the J1 also each connect resistance R202 and R203, and the pin 1 of J1 connects 3.3V power supply, draws Foot 2 is grounded, and the pin 5 and pin 6 of the master controller U2 connects crystal oscillator CRY201, an electricity in parallel on the crystal oscillator CRY201 R201 is hindered, one end of the crystal oscillator CRY201 connects capacitor C208, and the other end connects capacitor C207；The master controller U2's draws Foot 30 is also connected with resistance R206, and one end of R206 connects R207, and the other end connects the base stage of transistor Q201, the transistor 3.3V power supply is connected after the collector connection R208 of Q201, is also connected with the pin 3 of transceiver U4 in RS485 interface circuit；It is described The pin 7 of master controller U2 connects resistance R209, and pin 39 connects set key S1, and the set key S1 is used to fill at multiple Number is set when setting while using, and convenient for selecting corresponding data connection object, the pin 40 of the master controller U2 is connected The pin 3 of diode assembly LED201 is connected after resistance R204, the pin 1 of the LED201 connects after connecting resistance R205 3.3V power supply, pin 2 and 4 are grounded, and the pin 40 of the master controller U2 connects the pin 3 of Zigbee wireless transport module U3, The pin 6 and pin 5 of pin 21 and pin 22 connection the Zigbee wireless transport module U3 of the master controller U2, the U2 Pin 24 connect in parallel capacitor C203, C204, C205 and C206.

Preferably, the crystal oscillator CRY201 is using the patch of 8MHz-49S/SMD model without source crystal oscillator；The transistor Q201 uses the universal transistor of MMBT3904LT1G model, and the diode assembly LED201 uses the model of d3LED-2 × 1 LED component.

Preferably, the patch B201 also uses the patch magnetic bead of CBW201209U800T model.

Further, the master controller U2 uses the STM32 Series of MCU based on ARM Cortex-M kernel, Concrete model is STM32F103C8T6.

Further, the circuit of the Zigbee wireless transport module U3 is as shown in figure 5, include that Zigbee is wirelessly transferred The pin 5 of module U3 and patch B301, the U3 connect the pin 22 of connection master controller U2 after resistance R301, and pin 6 connects The pin 21 of master controller U2 is connected after resistance R302, pin 3 connects the pin 40 of connection master controller U2 after resistance R305, Pin 4 connects net key S2, and the net key S2 is first to match for finding transceiver corresponding with Zigbee wireless transport module U3 When use, the pin 7 of the U2 connects the pin 3 that diode assembly LED301 is connected after resistance R303, the pin 8 of the U2 The pin 1 of diode assembly LED301 is connected after connection resistance R304, pin 2 and 4 is grounded, the connection of the one end the patch B301 3.3V power supply is grounded after the other end shunt capacitance C301 and C302.

Preferably, the Zigbee wireless transport module U3 uses the Zigbee wireless transport module of DRF1609H model, The diode assembly LED301 also uses the LED component of the model of d3LED-2 × 1；The patch B301 is also used The patch magnetic bead of CBW201209U800T model.

Further, the power module includes power-switching circuit, and 5V power supply is converted to the power supply of 3.3V, the electricity Power-switching circuit is as shown in fig. 6, include USB interface CN101, voltage-stablizer U1, two diode D101 and D102 and two patch Piece B101 and B102, connect diode D101 between the pin 1 and pin 5 of the CN101, one end of the D101 connects patch Piece B101, the other end connect patch B102, and successively shunt capacitance CP101, C101 and C102 between patch B101 and B102 It is connect afterwards with voltage-stablizer U1, successively shunt capacitance C103, C104 and C105 after the connection of the output pin 2 and pin 4 of the U1 It is connect afterwards with diode D102, finally output+3.3V voltage, the pin 1 of the U1 is grounded, the pin 6,7,8 of the CN101 Be connected with each other with being followed by casing with 9, the casing by after resistance R101 and capacitor C106 be signally connected.

Preferably, the USB interface CN101 uses Micro USB interface；The diode D101 uses SMDJ5.0A Transient Suppression Diode；The voltage-stablizer U1 uses the voltage-stablizer of AMS1117 series；The diode D102 is used The Transient Suppression Diode of SMBJ3.3A, the patch B101 and B102 are all made of the patch magnetic of CBW201209U800T model Pearl.

It should be noted that all capacitors and resistance do not use 0402 encapsulation in the utility model, default uses 0603 envelope Dress, those skilled in the art can be clearly and completely real according to the model and attached drawing 2-6 of devices all in the utility model The corresponding circuit connection of technical solution that existing the utility model is recorded.

Working principle:

In the monitoring project of substation, it is desirable that carry out data acquisition to the various power equipments in indoor and outdoor in substation When monitoring or control, it is only necessary to which the present apparatus is set beside power equipment that is monitored or being controlled；When indoor monitoring center When needing the signal on the power equipment outside collection room, power equipment output signal is transmitted to by the present apparatus by transmission line After RS485 or RS232 interface are converted, Zigbee wireless transport module U3 is controlled for the letter after conversion by master controller U1 It number is wirelessly transmitted to the monitoring center of electric system, then is collected mail number by indoor monitoring center termination, thus mode can collect The operation data of all kinds of power equipments does not need specially to lay communication line, substantially reduces the construction time；When indoor monitoring When center needs to control outdoor power equipment, Zigbee wireless transport module is sent control signals to by monitoring center After U3, master controller U1 transmit control signals to RS485 or the RS232 interface of the present apparatus, electric power is transmitted to by transmission line and is set Standby input signal end.

The utility model realizes the two-way transparent wireless transmission of data, to realize by no wire routing communication line Data acquisition and forwarding can also be carried out between different type, the equipment of different agreement, and combine Zigbee wireless transport module The characteristics of, the electrical isolation between each node is realized, having the present apparatus, safety and reliability is high, time delay is low, construction party Just, it is routed the advantages that simple, at low cost；And the utility model is not necessarily to special cabling in installation and implementation, and it is convenient and efficient, it can use In a variety of occasions such as the acquisition of power equipment data, long-range control power equipments, and two kinds of interfaces are adapted to a variety of different power equipments It needs, increases the scope of application of the present apparatus.

The above is only the preferred embodiment of the utility model only, the protection model being not intended to limit the utility model It encloses, anyone skilled in the art any modification made within spirit of the present utility model and principle is equally replaced It changes and improves, should be included within the scope of protection of this utility model.

Claims

1. a kind of protocol conversion apparatus based on Zigbee wireless communication, it is characterised in that: connect including RS485 interface, RS232 Mouth, master controller, Zigbee wireless transport module and power module, the RS485 interface, RS232 interface, master controller and Zigbee wireless transport module is connect with power module, the RS485 interface, RS232 interface, Zigbee wireless transport module Connect with master controller, the circuit of the circuit of the RS485 interface and RS232 interface with the control including master controller U2 The circuit of circuit connection, the circuit connection of the control circuit and Zigbee wireless transport module U3, the RS485 interface includes Sequentially connected transceiver U4, protection chip U5 and connector CN401, the circuit of the RS232 interface include interconnected Transceiver U6 and connector CN501.

2. a kind of protocol conversion apparatus based on Zigbee wireless communication according to claim 1, it is characterised in that: described The specific connection of transceiver U4 described in the circuit of RS485 interface, protection chip U5 and connector CN401 and its peripheral circuit is such as Under: the pin 31 and pin 30 of pin 1 and pin 4 connection the master controller U2 of the transceiver U4, pin 6 connect electricity in parallel R404 and R406 is hindered, pin 7 connects resistance R405 and R407 in parallel, and pin 8 connects capacitor C403；The protection chip U5's Pin 2 is connect with R406 and fuse RV401, and pin 1 is connect with R407 and fuse RV402, the fuse RV401 and Discharge tube D403 and two concatenated discharge tube D401 and D402 is connected between RV402；The connector CN401's draws Foot 1 is connect with RV402, and pin 2 is connect with RV401, and pin 10 connects resistance R408, and pin 12 connects resistance R409.

3. a kind of protocol conversion apparatus based on Zigbee wireless communication according to claim 2, it is characterised in that: described The circuit of RS485 interface further includes a patch B401, and the one end the patch B401 connects 3.3V power supply, other end shunt capacitance It is grounded after C401 and C402.

4. a kind of protocol conversion apparatus based on Zigbee wireless communication according to claim 1, it is characterised in that: described The specific connection of transceiver U6 described in the circuit of RS232 interface and connector CN501 and its peripheral circuit is as follows: the transmitting-receiving Capacitor C504 is connected between the pin 1 and pin 3 of device U6, capacitor C505 is connected between pin 4 and pin 5, and pin 2 connects capacitor C502, pin 6 connect capacitor C503, and pin 9 and pin 10 connect master controller U2's after being separately connected resistance R505 and R506 Pin 13 and pin 12, the pin 7 of the transceiver U6 connect the pin 3 that the connector CN501 is accessed after resistance R502, institute State transceiver U6 pin 8 connect resistance R501 after connect the pin 1 of the connector CN501, also divide on pin 1 and pin 3 It is not connected with discharge tube D501 and D502, pin 10 and pin 12 are separately connected resistance R503 and R504.

5. a kind of protocol conversion apparatus based on Zigbee wireless communication according to claim 2 or 4, it is characterised in that: The control circuit further includes crystal oscillator CRY201, transistor Q201 and diode assembly LED201, and the master controller U2's draws Foot 5 and pin 6 connect crystal oscillator CRY201, resistance R201 in parallel on the crystal oscillator CRY201, the one of the crystal oscillator CRY201 End connection capacitor C208, the other end connect capacitor C207；The pin 30 of the master controller U2 is also connected with resistance R206, R206's One end connects R207, and the other end connects the base stage of transistor Q201, and the collector of the transistor Q201 connects R208, is also connected with The pin 3 of transceiver U4 in RS485 interface circuit；The pin 7 of the master controller U2 connects resistance R209, and the connection of pin 39 is set Key S1 is set, pin 40 connects the pin 3 of connection diode assembly LED201 after resistance R204, and the pin 1 of the LED201 connects The pin 40 of resistance R205, the master controller U2 connect the pin 3 of Zigbee wireless transport module U3, the master controller U2 Pin 21 and pin 22 connect Zigbee wireless transport module U3 pin 6 and pin 5.

6. a kind of protocol conversion apparatus based on Zigbee wireless communication according to claim 5, it is characterised in that: described Control circuit further includes a patch B201, and the one end the patch B201 connects 3.3V power supply, other end shunt capacitance C201 and It is grounded after C202.

7. a kind of protocol conversion apparatus based on Zigbee wireless communication according to claim 5, it is characterised in that: described Master controller U2 uses the STM32 Series of MCU based on ARM Cortex-M kernel.

8. a kind of protocol conversion apparatus based on Zigbee wireless communication according to claim 5, it is characterised in that: described The circuit of Zigbee wireless transport module U3 includes the company of pin 5 of Zigbee wireless transport module U3 and patch B301, the U3 The pin 22 of master controller U2 is connected after connecting resistance R301, pin 6 connects the pin 21 of connection master controller U2 after resistance R302, Pin 3 connects the pin 40 of connection master controller U2 after resistance R305, and pin 4 connects net key S2, and the pin 7 of the U2 connects electricity The pin 3 of diode assembly LED301 is connected after resistance R303, the pin 8 of the U2 connects diode assembly after connecting resistance R304 The pin 1 of LED301, the one end the patch B301 connect 3.3V power supply, are grounded after the other end shunt capacitance C301 and C302.

9. a kind of protocol conversion apparatus based on Zigbee wireless communication according to claim 1, it is characterised in that: described Power module includes power-switching circuit, and 5V power supply is converted to the power supply of 3.3V, and the power-switching circuit includes USB interface CN101, voltage-stablizer U1, two diode D101 and D102 and two patch B101 and B102,1 He of pin of the CN101 Diode D101 is connected between pin 5, one end of the D101 connects patch B101, and the other end connects patch B102, and is pasting It is successively connect with voltage-stablizer U1 after shunt capacitance CP101, C101 and C102 between piece B101 and B102, the output end of the U1 draws Foot 2 and pin 4 successively connects after shunt capacitance C103, C104 and C105 after connecting with diode D102, and finally output+3.3V is electric Pressure.