CN201813367U - General micropower wireless communication module - Google Patents
General micropower wireless communication module Download PDFInfo
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- CN201813367U CN201813367U CN2010202738027U CN201020273802U CN201813367U CN 201813367 U CN201813367 U CN 201813367U CN 2010202738027 U CN2010202738027 U CN 2010202738027U CN 201020273802 U CN201020273802 U CN 201020273802U CN 201813367 U CN201813367 U CN 201813367U
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- radiofrequency
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Abstract
The utility model discloses a general micropower wireless communication module, which comprises a radiofrequency chip, a microprogrammed control unit (MCU), two crystal oscillators, a radiofrequency transmitting circuit and a radiofrequency receiving circuit. The two crystal oscillators are different in frequency, one of the crystal oscillators is connected with the radiofrequency chip while the other crystal oscillator is connected with the MCU, the radiofrequency chip is connected with the MCU via a serial port, the radiofrequency transmitting circuit and the radiofrequency receiving circuit respectively comprise a control switch, and the control switch is connected with the radiofrequency chip and an antenna when the radiofrequency chip transmits radiofrequency signals. The transmission power of the general micropower wireless communication module can be adjusted via software, the maximum transmission power is 100mW, and the communication distance of the communication module is long in distance which is not less than 800mm and is high in penetrating power.
Description
Technical field
The utility model relates to a kind of general micro power radio communication module.
Background technology
General micro power radio communication module is widely used in radio meter register, industrial telemetry, remote control, automatic data collection, and building automatic, calculator room equipment monitoring, security protection, gate control system, Wireless Keyboard and mouse, location under water is on industry and the civil equipment such as report to the police.Along with development of Communication Technique, the micro power radio communication technology has obtained development at full speed, but exists communication distance short always, and shortcomings such as penetration capacity difference have directly influenced the promotion and application of this technology in each field.As certain the model micro power radio module based on certain company, when transmitting power was 100mW, its communication distance was lower than 400 meters when the 470MHz channel, and the body of wall 1-2 that can only penetrate brick powder structure is stifled.
The utility model content
The purpose of this utility model is to provide a kind of penetration capacity strong, the general micro power radio communication module that communication distance is far away.
This general micro power radio communication module that the utility model provides, comprise radio frequency chip, MCU, crystal oscillator, radio frequency transtation mission circuit and radio frequency receiving loop, wherein crystal oscillator has two, the frequency difference, a crystal oscillator is connected with radio frequency chip, and another crystal oscillator is connected with MCU; Radio frequency chip is connected with MCU by serial ports; Radio frequency transtation mission circuit and radio frequency receiving loop contain control switch, and this control switch is used for radio frequency chip and is connected with antenna with radio frequency chip when sending radiofrequency signal.
Described radio frequency chip adopts the Si4432 cake core of Silicon Labs Cp Inc., and MCU adopts the Atxmega32A4 type single-chip microcomputer of U.S. Atmel Corporation.
The general micro power radio communication module of the utility model can directly be connected with antenna by radio frequency interface, compares with traditional wireless module, has saved feeder line, has reduced the decay of radiofrequency signal, has improved communication distance effectively.The utility model is 100mW to the maximum by its transmitting power of inventor's probationary certificate, can regulate transmitting power by software, and its communication distance is not less than 800 meters, and communication distance is far away, and penetration capacity is strong.
Description of drawings
Fig. 1 is a circuit structure schematic block diagram of the present utility model.
Fig. 2 is the concrete line schematic diagram of Si4432 and Atxmega32A4 among Fig. 1.
Fig. 3 is a kind of circuit diagram at Fig. 1.
Fig. 4 is the outline dimensional drawing of execution mode shown in Figure 3.
Embodiment
The utility model comprises radio frequency chip, MCU, crystal oscillator, radio frequency transtation mission circuit and radio frequency receiving loop as can be seen from Figure 1, and wherein radio frequency chip is connected with MCU by serial ports; The radio frequency transtation mission circuit is connected with radio frequency chip with the radio frequency receiving loop, and crystal oscillator has two, and one is the 32MHz crystal oscillator, and another is the 11.0592MHz crystal oscillator, and the 32MHz crystal oscillator is connected with radio frequency chip, and the 11.0592MHz crystal oscillator is connected with MCU; Radio frequency chip adopts is the EZRadioPRO series radio transmitting and receiving chip Si4432 cake core of a high integration released of Silicon Labs company (Silicon Labs Cp Inc.), low-power consumption, multiband.Its operating voltage is 1.9～3.6 V, and 20 pin QFN encapsulate (4 mm * 4 mm), can be operated in four frequency ranges of 315/433/868/915 MHz; Inner integrated diversity antenna, power amplifier, wake the FIFO that transmits and receive data of timer, digital modems, 64 bytes up, and configurable GPIO etc.The required in use outer member of Si4432 seldom, the crystal oscillator of 1 30 MHz, several electric capacity and inductance just can be formed the receive-transmit system of a high reliability, simplicity of design, and cost is low.The receiving sensitivity of Si4432 reaches-117 dB, and splendid link-quality can be provided, and power consumption is reduced to minimum when enlarging transmission range; Minimum filtering bandwidth reaches 8 kHz, has splendid channel-selective; In 240～960 MHz frequency ranges, the peak power output when not adding power amplifier just can reach+20dBm, designs that reception and transmission range can reach 2 km farthest when good.
MCU adopts 8/16 single-chip microcomputer of Atxmega32A4 of American ATMEL, can be connected with Si4432 by the SPI interface, be loaded under Si4432 initialize routine and the wireless self-networking program single-chip microcomputer in, the transmitting power of Si4432 can be passed through the change of programming.Si4432 sees Fig. 2 with being connected of Atxmega32A4.
As can be seen from Figure 3, the radio frequency transtation mission circuit of Si4432 is by control switch D1, capacitor C 8, C9, C11, C14, and inductance L 1, L2, L3 form.The radio frequency receiving loop is by control switch D1, inductance L 3, L5, L7, and capacitor C 10, C12, C13, C17 form, and when Si4432 sent radiofrequency signal, D1 connected Si4432 and sends loop and antenna.
Fig. 4 shows the outline dimensional drawing of above-mentioned execution mode, and whole module is a rectangle, and 5 hole interfaces of module top are the radio frequency interface connector, directly connect antenna, compared, saved feeder line with former wireless module, reduce the decay of radiofrequency signal, can effectively improve communication distance.The contact pin that two spacings are 1.27mm can convenient be connected with user's keyset, can adopt double socket as user's keyset, can be directly with the wireless module socket on socket, make things convenient for the exchange of module.
Claims (2)
1. general micro power radio communication module, it is characterized in that this communication module comprises radio frequency chip, MCU, crystal oscillator, radio frequency transtation mission circuit and radio frequency receiving loop, wherein crystal oscillator has two, the frequency difference, a crystal oscillator is connected with radio frequency chip, and another crystal oscillator is connected with MCU; Radio frequency chip is connected with MCU by serial ports; Radio frequency transtation mission circuit and radio frequency receiving loop contain control switch, and this control switch is used for radio frequency chip and is connected with antenna with radio frequency chip when sending radiofrequency signal.
2. general micro power radio communication module according to claim 1 is characterized in that described radio frequency chip adopts the Si4432 cake core of Silicon Labs Cp Inc., and MCU adopts the Atxmega32A4 type single-chip microcomputer of U.S. Atmel Corporation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202738027U CN201813367U (en) | 2010-07-28 | 2010-07-28 | General micropower wireless communication module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202738027U CN201813367U (en) | 2010-07-28 | 2010-07-28 | General micropower wireless communication module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201813367U true CN201813367U (en) | 2011-04-27 |
Family
ID=43896303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202738027U Expired - Lifetime CN201813367U (en) | 2010-07-28 | 2010-07-28 | General micropower wireless communication module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201813367U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104895565A (en) * | 2015-06-25 | 2015-09-09 | 中国矿业大学(北京) | Remote control system for electromagnetic speed-regulating coal mining machine |
| CN106411353A (en) * | 2016-11-22 | 2017-02-15 | 宁夏计算机软件与技术服务有限公司 | Low-power spread-spectrum wireless communication module and method thereof |
-
2010
- 2010-07-28 CN CN2010202738027U patent/CN201813367U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104895565A (en) * | 2015-06-25 | 2015-09-09 | 中国矿业大学(北京) | Remote control system for electromagnetic speed-regulating coal mining machine |
| CN106411353A (en) * | 2016-11-22 | 2017-02-15 | 宁夏计算机软件与技术服务有限公司 | Low-power spread-spectrum wireless communication module and method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 410205 No. 468 Tongzipo West Road, Changsha High-tech Industrial Development Zone, Yuelu District, Changsha City, Hunan Province Patentee after: WILLFAR INFORMATION TECHNOLOGY Co.,Ltd. Address before: 410205 No. 468 Tongzipo West Road, Changsha High-tech Industrial Development Zone, Yuelu District, Changsha City, Hunan Province Patentee before: HUNAN WEISHENG INFORMATION TECHNOLOGY CO.,LTD. Address after: 410205 No. 468 Tongzipo West Road, Changsha High-tech Industrial Development Zone, Yuelu District, Changsha City, Hunan Province Patentee after: HUNAN WEISHENG INFORMATION TECHNOLOGY CO.,LTD. Address before: 410205 No. 468 Tongzipo West Road, Changsha High-tech Industrial Development Zone, Yuelu District, Changsha City, Hunan Province Patentee before: CHANGSHA WASION INFORMATION TECHNOLOGY Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110427 |