CN202713343U - Signal converter between ZigBee network and RS-485 bus - Google Patents
Signal converter between ZigBee network and RS-485 bus Download PDFInfo
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- CN202713343U CN202713343U CN 201220187035 CN201220187035U CN202713343U CN 202713343 U CN202713343 U CN 202713343U CN 201220187035 CN201220187035 CN 201220187035 CN 201220187035 U CN201220187035 U CN 201220187035U CN 202713343 U CN202713343 U CN 202713343U
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Abstract
The utility model discloses a signal converter between a ZigBee network and an RS-485 bus, which comprises a ZigBee wireless transceiver module and an RS-485 signal conversion module, wherein the ZigBee wireless transceiver module and the RS-485 signal conversion module are mutually connected; signal connection is carried out between the ZigBee wireless transceiver module and the ZigBee network via an antenna; and the RS-485 signal conversion module is connected with the RS-485 bus. The signal converter disclosed by the utility model is applied to signal conversion between the ZigBee network and RS-485 bus, thereby facilitating communication between two networks and effectively expanding the applicable range of the RS-485 bus.
Description
Technical field
The utility model relates to wireless telecommunications and signal switch technology, particularly the signal converter of a kind of ZigBee-network and RS-485 bus.
Background technology
ZigBee is based on a low-power consumption territory fidonetFido of IEEE802.15.4 standard.Technology according to this agreement regulation is the wireless communication technology of a kind of short distance, low-power consumption, the characteristics such as also have low complex degree, low cost, antijamming capability is strong, networking is simple, mainly be suitable for automatically control and remote control field, be particularly useful for industrial data acquisition and monitor network, can embed various device, realize that the equipment room near radio connects; The RS-485 bus is present popular a kind of fieldbus, is characterized in that reliability is high, cost is low, it is simple and convenient to implement.Present equipment is generally supported the RS-485 network communication, and the translation interface of RS-485 not only cost is low and of a great variety, so the RS-485 bus is widely used in the industrial equipment field of network communication.
The RS-485 bus network generally needs a twisted-pair cable to make bus, each node is coupled together, and in difficult wiring or the relatively poor place of communication environment condition, the applicability of RS-485 bus will obviously reduce, in the face of these situations, be a kind of good selection with ZigBee wireless network transmissions signal, it can not only free equipment from the constraint of wired connection, and the strong characteristics of antijamming capability are arranged, can play good supplementary function for the RS-485 bus.ZigBee-network to be combined application with the RS-485 bus, then must carry out the signal conversion to it.
The utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, the signal converter of a kind of ZigBee-network and RS-485 bus is provided, this signal converter has been realized the signal conversion between ZigBee-network and two kinds of networks of RS-485 bus, and its signal stabilization, and is easy to use.
The technical solution of the utility model is: the signal converter of a kind of ZigBee-network and RS-485 bus, comprise the ZigBee radio receiving transmitting module and the RS-485 signal conversion module that are connected, the ZigBee radio receiving transmitting module is connected with the ZigBee-network signal by antenna, and the RS-485 signal conversion module is connected with the RS-485 bus.
Described ZigBee radio receiving transmitting module is built-in with MCU microprocessor submodule and the wireless signal transmitting-receiving submodule that is connected, MCU microprocessor submodule is connected with the RS-485 signal conversion module, and wireless signal transmitting-receiving submodule is connected with the ZigBee-network signal by antenna.
Be provided with the chip that model is CC2430 in the described MCU microprocessor submodule, be provided with the radio frequency chip that model is CC2591 in the wireless signal transmitting-receiving submodule.
Be provided with the chip that model is MAX485 in the described RS-485 signal conversion module.
When the signal converter of this ZigBee-network and RS-485 bus uses, its principle is: the wireless signal transmitting-receiving submodule in the ZigBee radio receiving transmitting module is by behind the signal of antenna reception ZigBee-network, delivering to first MCU microprocessor submodule processes, deliver to again the RS-485 signal conversion module and change, send at last the bus to RS-485; In like manner, but the RS-485 signal also reverse conversion be the ZigBee-network signal.Wherein, the RS-485 signal conversion module uses Transistor-Transistor Logic level to communicate by letter with MCU microprocessor submodule, realizes the mutual conversion of Transistor-Transistor Logic level and RS-485 bus signals.
The utility model has following beneficial effect with respect to prior art:
This signal converter is applied to the signal conversion between ZigBee-network and two kinds of networks of RS-485 bus, can realize easily two kinds of communications between the network, effectively enlarges the scope of application of RS-485 bus.
Description of drawings
Fig. 1 is the principle schematic of the signal converter of this ZigBee-network and RS-485 bus.
Fig. 2 be this ZigBee-network with the signal converter of RS-485 bus in the connection diagram of each main chip.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but execution mode of the present utility model is not limited to this.
Embodiment
The signal converter of a kind of ZigBee-network of present embodiment and RS-485 bus, as shown in Figure 1, comprise the ZigBee radio receiving transmitting module and the RS-485 signal conversion module that are connected, the ZigBee radio receiving transmitting module is connected with the ZigBee-network signal by antenna, and the RS-485 signal conversion module is connected with the RS-485 bus.
The ZigBee radio receiving transmitting module is built-in with MCU microprocessor submodule and the wireless signal transmitting-receiving submodule that is connected, MCU microprocessor submodule is connected with the RS-485 signal conversion module, and wireless signal transmitting-receiving submodule is connected with the ZigBee-network signal by antenna.
Be provided with the chip that model is CC2430 in the MCU microprocessor submodule, be provided with the radio frequency chip that model is CC2591 in the wireless signal transmitting-receiving submodule.
Be provided with the chip that model is MAX485 in the RS-485 signal conversion module.
When the signal converter of this ZigBee-network and RS-485 bus uses, its principle is: the wireless signal transmitting-receiving submodule in the ZigBee radio receiving transmitting module is by behind the signal of antenna reception ZigBee-network, delivering to first MCU microprocessor submodule processes, deliver to again the RS-485 signal conversion module and change, send at last the bus to RS-485; In like manner, but the RS-485 signal also reverse conversion be the ZigBee-network signal.Wherein, the RS-485 signal conversion module uses Transistor-Transistor Logic level to communicate by letter with MCU microprocessor submodule, realizes the mutual conversion of Transistor-Transistor Logic level and RS-485 bus signals.
When each main chip is connected in the signal converter of this ZigBee-network and RS-485 bus, as shown in Figure 2, model is that the Soc chip of CC2430 has comprised a high-performance 2.4GHz DSSS radio-frequency (RF) transceiver core and 8051 controllers, and 34 pin, 33 pins, 32 pins are corresponding the linking to each other of 2 pins, 3 pins, 4 pins difference of the radio frequency chip of CC2591 with model.The function of wireless signal transmitting-receiving submodule mainly is to be that the chip of CC2591 is realized by model, 11 pins of CC2591 chip link to each other with antenna, by the antenna reception wireless signal, to send the CC2430 chip to after its gain, maybe will after the CC2430 chip receives the RF signal gain of returning, send by antenna.Being used of CC2430 chip and CC2591 chip is not only low in energy consumption, and the fed distance of ZigBee wireless signal can be expanded to about 1000 meters by about 100 meters.Model is that 1 pin, 4 pins of the chip of MAX485 are connected with 13 pins, 14 pins of CC2430 chip respectively in the RS-485 signal conversion module, 6 pins of MAX485 chip, 7 pins link to each other with the RS-485 interface respectively, the Transistor-Transistor Logic level of CC2430 output is converted to behind the RS-485 signal to send in the equipment by the RS-485 bus goes, maybe will be converted to Transistor-Transistor Logic level from the device signal that the RS-485 bus receives and transfer to the CC2430 chip.
The reception of above-mentioned various signals, change and be sent under the control of 8051 controllers in the CC2430 chip and finish.
As mentioned above, just can realize preferably the utility model, above-described embodiment is preferred embodiment of the present utility model only, is not to limit practical range of the present utility model; Be that all equalizations of doing according to the utility model content change and modification, all contained by the utility model claim scope required for protection.
Claims (4)
1.ZigBee the signal converter of network and RS-485 bus, it is characterized in that, comprise the ZigBee radio receiving transmitting module and the RS-485 signal conversion module that are connected, the ZigBee radio receiving transmitting module is connected with the ZigBee-network signal by antenna, and the RS-485 signal conversion module is connected with the RS-485 bus.
2. the signal converter of described ZigBee-network and RS-485 bus according to claim 1, it is characterized in that, described ZigBee radio receiving transmitting module is built-in with MCU microprocessor submodule and the wireless signal transmitting-receiving submodule that is connected, MCU microprocessor submodule is connected with the RS-485 signal conversion module, and wireless signal transmitting-receiving submodule is connected with the ZigBee-network signal by antenna.
3. the signal converter of described ZigBee-network and RS-485 bus according to claim 2, it is characterized in that, be provided with the chip that model is CC2430 in the described MCU microprocessor submodule, be provided with the radio frequency chip that model is CC2591 in the wireless signal transmitting-receiving submodule.
4. the signal converter of described ZigBee-network and RS-485 bus according to claim 1 is characterized in that, is provided with the chip that model is MAX485 in the described RS-485 signal conversion module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220187035 CN202713343U (en) | 2012-04-27 | 2012-04-27 | Signal converter between ZigBee network and RS-485 bus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220187035 CN202713343U (en) | 2012-04-27 | 2012-04-27 | Signal converter between ZigBee network and RS-485 bus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202713343U true CN202713343U (en) | 2013-01-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220187035 Expired - Lifetime CN202713343U (en) | 2012-04-27 | 2012-04-27 | Signal converter between ZigBee network and RS-485 bus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202713343U (en) |
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2012
- 2012-04-27 CN CN 201220187035 patent/CN202713343U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 510640 Tianhe District, Guangdong, No. five road, No. 381, Patentee after: South China University of Technology Patentee after: Guangzhou is far smart Polytron Technologies Inc Address before: 510640 Tianhe District, Guangdong, No. five road, No. 381, Patentee before: South China University of Technology Patentee before: Guangzhou Yuanzheng Intelligence Technology Co., Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130130 |