CN203446038U

CN203446038U - Multiple-wireless transmission protocol-based gateway

Info

Publication number: CN203446038U
Application number: CN201320571921.4U
Authority: CN
Inventors: 缪伟; 莫晓晖; 张磊; 张乐; 司昂
Original assignee: Jinling Institute of Technology
Current assignee: Jinling Institute of Technology
Priority date: 2013-09-16
Filing date: 2013-09-16
Publication date: 2014-02-19
Anticipated expiration: 2023-09-16

Abstract

The utility model discloses a multiple-wireless transmission protocol-based gateway and relates to a gateway design structure. The multiple-wireless transmission protocol-based gateway includes a first main control chip, a second main control chip and PC serial port adjustment assistants, wherein the first main control chip is connected with the second main control chip, and the first main control chip and the second main control chip are both connected with the PC serial port adjustment assistants; and the first main control chip comprises a WIFI module, a Bluetooth module, a ZigBee and a serial port module, wherein the WIFI module, the Bluetooth module and ZigBee are connected with the serial port module respectively, and the serial port module is connected with the PC serial port adjustment assistant. With the multiple-wireless transmission protocol-based gateway of the utility model adopted, the defect of a single transmission protocol of a traditional gateway can be eliminated. The WiFi modules, the Bluetooth modules, a GPRS module, a 3G module and the Zigbee modules in a network can realize data free transmission.

Description

Gateway based on many wireless transmission protocols

Technical field

The utility model relates to a kind of gateway designs structure, be specifically related to a kind of gateway based on many wireless transmission protocols.

Background technology

Gateway claims again gateway, protocol converter.Gateway to realize network interconnection, is the most complicated network interconnection apparatus, network interconnection in transport layer, only for two network interconnections that upper-layer protocol is different.Gateway both can interconnect for wide area network, also can be for local area network interconnection.Gateway is a kind of computer system or equipment of changing important task that serves as.Using different communication protocol, data format or language, even, between the diverse two kinds of systems of architecture, gateway is a translater.There are some defects in traditional gateway: it only possesses single host-host protocol aspect transmission, can not realize the wifi module in network, bluetooth module, and GPRS module, 3G module and Zigbee module can realize freely transmitting of data.

Utility model content

For the deficiency existing in prior art, the utility model object is to be to provide a kind of gateway based on many wireless transmission protocols, can overcome the defect of conventional gateway single transmission agreement, wifi module in network, bluetooth module, GPRS module, 3G module and Zigbee module can realize freely transmitting of data.

To achieve these goals, the utility model is to realize by the following technical solutions: the gateway based on many wireless transmission protocols, comprise that the first main control chip, the second main control chip and PC serial ports regulate assistant, the first main control chip is connected with the second main control chip, and the first main control chip, the second main control chip all regulate assistant to be connected with PC serial ports; The first described main control chip comprises WIFI module, bluetooth module, zigbee and serial port module, and WIFI module, bluetooth module, zigbee are all connected with serial port module, and serial port module regulates assistant to be connected with PC serial ports.

Described the first main control chip and the second main control chip all adopt STM32F107 single-chip microcomputer.

Described WIFI module is the flush bonding module that meets WiFi wireless network standards based on Uart interface, and built-in wireless network protocol IEEE802.11 protocol stack and TCP/IP protocol stack can be realized user's serial data to the conversion between wireless network.By Uart-Wifi module, traditional serial equipment is light access of radio network also.

The first described main control chip minimum system circuit comprises power circuit, reset circuit, outer clock circuit, crystal oscillating circuit and write circuit.

The utility model builds embedded Web server on ARM Contex-M3 processor, by expansion Wi-Fi module, bluetooth module, GPRS module, 3G module and Zigbee module, thus network interface is realized the foundation of wireless network and is realized transfer of data with being connected of Internet.

The beneficial effects of the utility model: can overcome the defect of conventional gateway single transmission agreement, the wifi module in network, bluetooth module, GPRS module, 3G module and Zigbee module can realize freely transmitting of data.

Accompanying drawing explanation

Below in conjunction with the drawings and specific embodiments, describe the utility model in detail;

Fig. 1 is structural representation of the present utility model;

Fig. 2 is power circuit diagram of the present utility model;

Fig. 3-4 are power pins filter circuit figure of the present utility model;

Fig. 5 is crystal oscillation clock circuit figure of the present utility model;

Fig. 6 is reset circuit figure of the present utility model;

Fig. 7 is emulation write circuit figure of the present utility model.

Embodiment

For technological means, creation characteristic that the utility model is realized, reach object and effect is easy to understand, below in conjunction with embodiment, further set forth the utility model.

With reference to Fig. 1-7, this embodiment is by the following technical solutions: the gateway based on many wireless transmission protocols, comprise that the first main control chip A, the second main control chip B and PC serial ports regulate assistant 1 to be connected, the first main control chip A is connected with the second main control chip B, and the first main control chip A, the second main control chip B all regulate assistant 1 with PC serial ports; The first described main control chip A comprises WIFI module 2, bluetooth module 3, zigbee4 and serial port module 5, and WIFI module 2, bluetooth module 3, zigbee4 are all connected with serial port module 5, and serial port module 5 regulates assistant 1 to be connected with PC serial ports.

It should be noted that described the first main control chip A and the second main control chip B all adopt STM32F107 single-chip microcomputer.

It should be noted that, described WIFI module is the flush bonding module that meets WiFi wireless network standards based on Uart interface, built-in wireless network protocol IEEE802.11 protocol stack and TCP/IP protocol stack, can realize user's serial data to the conversion between wireless network.By Uart-Wifi module, traditional serial equipment is light access of radio network also.

In addition, the first described main control chip A minimum system circuit comprises power circuit, reset circuit, outer clock circuit, crystal oscillating circuit and write circuit.

As shown in Figure 2, in circuit, the VBAT of pin 6 is battery to power circuit, and the VDDA of pin 22 is external chip power supply, and VDD_1 ~ 5 are external power source, supplies with 3.3V, VSSA ground connection.

Power pins filter circuit as shown in Figure 3 and Figure 4.In Fig. 3, between the power pins of chip and ground pin, connect 5 filter capacitors, be used for the burr of filter out power.In Fig. 4, with inductance, carry out the AC signal in filter out power, and distinguish low-frequency noise and the high-frequency noise in filter out power with small one and large one two electric capacity.VDDA obtains after filtering, and VSSA is resulting through filtered inductance.Reduce lead-in wire, can increase input current size, Vref is reference voltage, the effect of inductance is that perfectly straight flow resistance exchanges, the effect of electric capacity is to carry out filtering, between reference voltage, increase the filter capacitor of 0.1uF and 10uF, its medium and small electric capacity can be considered high-frequency noise and be disturbed, and large electric capacity can be considered low frequency noises.

Outer clock circuit is in Single Chip Microcomputer (SCM) system, the effect of crystal oscillator is very large, it is in conjunction with the circuit of single-chip microcomputer inside, the clock frequency needing while producing single-chip microcomputer operation, the execution of all instructions of single-chip microcomputer is all set up on this basis, the clock frequency that crystal oscillator provides is higher, and the speed of that single-chip microcomputer operation is just faster.Crystal oscillator is divided into two kinds of active crystal oscillator and passive crystal oscillators, and what in native system, use is passive crystal oscillator, and crystal oscillation clock circuit as shown in Figure 5.What native system was used is that passive crystal oscillator is the crystal oscillator of 25MHz, additional two electric capacity, and size is 20pF, and capacitance size is specified in chip handbook, and input signal enters through OSC IN, and through the passive crystal oscillator of X1, finally the signal of output is still 25MHz, produces thus feedback.

In reset circuit, use MAX809 reset managing chip, MAX809 is low level reset managing chip.For monitoring the supply voltage of microcontroller and other logic systems.It can be powering on, in power down and node situation to microcontroller exhaust reset signal, when supply voltage is during lower than default threshold voltage, device can send reset signal, until supply voltage returns to higher than threshold voltage again within a period of time.MAX809 has the reset output of Low level effective, representative value be the low source current of 17uA make that MAX809 can be desirable for portable, battery powered equipment.It uses the SOT23 encapsulation of 3 pins.

Reset circuit as shown in Figure 6.NRST chip is reset pin, is usually all high level, in reset circuit, all can constantly monitor the magnitude of voltage of No. 3 pins, and when the magnitude of voltage of No. 3 pins is lower than 2.3V time, No. 2 pin can produce low level, with this, comes to reset to main control chip STM32.

Emulation write circuit as shown in Figure 7.Emulation write circuit has two kinds of writing modes, is respectively JTAG and SWD.JTAG is also a kind of international standard test protocol, is mainly used in chip internal test.Most high-grade device is all supported JTAG agreement now, as DSP, FPGA device etc.The jtag interface of standard is 4 lines: TMS, TCK, TDI, TDO, is respectively model selection, clock, data input and DOL Data Output Line.Relevant JTAG pin is defined as: TCK is test clock input; TDI is test data input, and data are by TDI pin input jtag interface; TDO is test data output, and data are exported from jtag interface by TDO pin; TMS is that test pattern is selected, and TMS is used for arranging jtag interface in certain specific test pattern; TRST is test reset, input pin, Low level effective.

SWD pattern is more reliable below fast mode than JTAG.Below the situation of big data quantity, JTAG downloads and understands failure, but SWD odds can be little a lot.When GPIO just lacks one, can use SWD emulation, this pattern support pin still less.Recommendation SWD pattern in the time of plank finite volume, the pin that it needs is few, and the PCB space certainly needing is just little.So generally use SWD pattern more better.

This embodiment STM32F107 single-chip microcomputer has following features: the high-performance of ARM company " Cortex-M3 " kernel, 1.25DMips/MHz, and ARM7TDMI only has 0.95DMips/MHz; First-class peripheral hardware, two 12 ADC of 1 μ s, the UART of 4 megabit per seconds, the SPI of 18 megabit per seconds, the I/O reversal rate of 18MHz; Low-power consumption consumes 36mA (all peripheral hardwares are in running order) when 72MHz, drops to 2 μ A during standby; Maximum integrated level, reset circuit, low-voltage detection, voltage regulator, accurate RC oscillator etc.; Simple structure and easy-to-use instrument.

This embodiment can overcome the defect of conventional gateway single transmission agreement, the wifi module in network, and bluetooth module, GPRS module, 3G module and Zigbee module can realize freely transmitting of data.

More than show and described basic principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and specification, describes just illustrates principle of the present utility model; do not departing under the prerequisite of the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims

1. the gateway based on many wireless transmission protocols, it is characterized in that, comprise that the first main control chip (A), the second main control chip (B) and PC serial ports regulate assistant (1), the first main control chip (A) is connected with the second main control chip (B), and the first main control chip (A), the second main control chip (B) all regulate assistant (1) to be connected with PC serial ports; Described the first main control chip (A) comprises WIFI module (2), bluetooth module (3), zigbee (4) and serial port module (5), WIFI module (2), bluetooth module (3), zigbee4 are all connected with serial port module (5), and serial port module (5) regulates assistant (1) to be connected with PC serial ports.

2. the gateway based on many wireless transmission protocols according to claim 1, is characterized in that, described the first main control chip (A) all adopts STM32F107 single-chip microcomputer with the second main control chip (B).

3. the gateway based on many wireless transmission protocols according to claim 1, it is characterized in that, described WIFI module (2) is the flush bonding module that meets WiFi wireless network standards based on Uart interface, built-in wireless network protocol IEEE802.11 protocol stack and TCP/IP protocol stack, can realize user's serial data to the conversion between wireless network, by Uart-Wifi module, traditional serial equipment is light access of radio network also.

4. the gateway based on many wireless transmission protocols according to claim 1, is characterized in that, described the first main control chip (A) minimum system circuit comprises power circuit, reset circuit, outer clock circuit, crystal oscillating circuit and write circuit.