A purple-bee technology-based voice transfer recovery system and method

A technology of voice transmission and Zigbee technology, which is applied in the transmission system, near-field transmission system, call system of near-field transmission system, etc., to achieve the effect of low power consumption and low cost

Inactive Publication Date: 2007-08-01
UNIV OF SCI & TECH BEIJING
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Problems solved by technology

However, simple data is not enough in some occasions. For example, some industrial site workers ne...

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  • A purple-bee technology-based voice transfer recovery system and method
  • A purple-bee technology-based voice transfer recovery system and method
  • A purple-bee technology-based voice transfer recovery system and method

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Embodiment Construction

[0020] Fig. 1 is a schematic diagram of the Zigbee technology-based voice transmission restoration system of the present invention. The system consists of the central management system, Zigbee gateway, Zigbee router and Zigbee voice terminal. The central management system consists of one or more computers, which can collect and process various data collected by the wireless sensor network, and control the operation of the entire network. The Zigbee gateway is a bridge connecting the central management system and the Zigbee wireless network. It is connected with the central computer by wire; meanwhile, it also has the function of the Zigbee coordinator. The Zigbee router acts as a repeater between remote devices to communicate and can be used to expand the range of the network. Zigbee gateways and Zigbee routers are reasonably placed in different places according to the characteristics of the site, and these two devices have no voice collection and playback functions, and thei...

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Abstract

A voice transmission recovery system and method based on the purple bee technique is belonged to the short-haul wireless communication technique field with low cost and low power consumption. The system consists of center management system and purple bee device, it can collect and process the data gathered by the wireless sensor, and control the whole network. The manager can communicate with the user with purple bee voice terminal. The purple bee device includes purple bee gateway, purple bee router and purple bee voice terminal; three devices comprise the purple bee wireless network. The voice transmission recovery method based on the purple bee technique include two parts, the first part is the pre real-time voice transmission method based on the storage recovery technique, and the second part is the real-time voice transmission method based on the control technique. The advantages are those: instant voice communication combines with the purple bee wireless communication device with low cost and low power consumption, and it provides a convenient voice communication method for locale persons.

Description

technical field [0001] The invention relates to the technical field of short-distance low-cost, low-power wireless communication, in particular to a voice transmission restoration system and method based on Zigbee technology. Background technique [0002] ZigBee is a new short-distance wireless communication technology, which emphasizes low cost and low power consumption. The physical layer of Zigbee technology adopts the direct sequence spread spectrum method, and the data transmission rate is between 20 kilobits per second and 250 kilobits per second. As the transmission distance increases, the data transmission rate will slow down. For example, a Zigbee product with a transmission power of 1 milliwatt can achieve a transmission rate of 250 kbit / s within a distance of 10 meters, but if the transmission distance is extended to 20 meters, the speed will drop to about 30 kbit / s . However, by increasing the transmission power, a transmission rate of 250 kilobits per second c...

Claims

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Application Information

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IPC IPC(8): H04B5/00H04B5/02H04B5/04H04M7/00H04L12/28
CPCY02D30/70
Inventor 杨裕亮周贤伟王丽娜李杰杨文星张明东
Owner UNIV OF SCI & TECH BEIJING
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