System and method for wireless-sensor communication

A technology of wireless sensors and communication methods, applied in transmission systems, signal transmission systems, instruments, etc., can solve problems such as power consumption, clock acquisition, cost increase, etc., to achieve accurate time, increase capacity, and avoid collisions.

Inactive Publication Date: 2009-08-26
BEIJING BEIKE ETUNG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, increasing the RTC chip will increase the cost of a single wireless sensor, and the RTC itself needs to consume part of the power, which is also not conducive to power saving
[0006] In addition, the existing wireless sensor systems have no effective mechanism to avoid the problem of system capacity drop caused by the collision of different wireless sensors when sending data, and there is no effective mechanism to ensure that each collected data can be uploaded to the data Receiver, which will cause loss of collected data
[0007] From the above analysis, it can be seen that the existing wireless sensor system cannot obtain an accurate clock in the case of power saving. To provide an accurate clock, an RTC chip needs to be added, which will lead to an increase in cost

Method used

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  • System and method for wireless-sensor communication
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  • System and method for wireless-sensor communication

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Embodiment 1

[0023] This embodiment provides a wireless sensor communication system, figure 1 A schematic diagram of the system. As shown in the figure, the wireless sensor system includes a concentrator and a plurality of wireless sensors connected to the concentrator. The wireless sensor of the system does not contain an RTC chip, but receives the time uniformly issued by the concentrator. In a preferred embodiment, after the concentrator receives the data sent by the wireless sensor, it includes the time information in the response message returned, and the wireless sensor updates its own time according to the time information. In another preferred embodiment, the concentrator is connected with a computer, and obtains the current time from the computer.

[0024] In order to improve the access capacity of the system, it is necessary to avoid data transmission by multiple wireless sensors at the same time as much as possible, which will cause the data sent by each sensor to be unrecogni...

Embodiment 2

[0053] This embodiment provides another wireless sensor communication system, Figure 4 A schematic diagram of the system. As shown in the figure, the wireless sensor system includes a concentrator, a plurality of wireless sensors connected to the concentrator, a repeater, and a plurality of wireless sensors connected to the repeater (not shown in the figure). The transponders are connected to the concentrator one level at a time through its upper level transponders. The concentrator can also be connected with a computer, and the current time can be obtained from the computer or related settings can be made to the concentrator through the computer.

[0054]The difference from Embodiment 1 is that since the system includes both a concentrator and a repeater, the wireless sensor will select an access device when accessing the system, and the access device can be a concentrator or a repeater. When a wireless sensor requests to access the system, the device receiving the request...

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Abstract

The invention provides a system and a method for wireless-sensor communication. The method comprises the steps of acquiring data according to a preset data acquisition cycle, wirelessly receiving current time information and specified data-sending time slots, updating local time according to the current time information and sending the acquired data within the specified data-sending time slots, wherein the data-sending time slots are concrete time segments within a preset data-sending cycle. As a concentrator uniformly allocates time, wireless sensors do not need to comprise extra RTC chips, so that the cost of the wireless sensors is saved. In addition, as the concentrator allocates the concrete data-sending time slots to each wireless sensor, collision caused by a plurality of wireless sensors simultaneously sending data is avoided, and the capacity of the wireless-sensor communication system can be greatly improved.

Description

technical field [0001] The present invention relates to the field of wireless sensors, in particular to a wireless sensor communication system and a communication method thereof. Background technique [0002] The communication system composed of wireless sensors has been widely used in various industries due to its flexible distribution, simple networking and wireless transmission. For example, the Chinese invention patent application with the application number 200610015212.2, the publication number CN 1920502A, and the invention name "Remote Wireless Temperature Measurement System" discloses a remote wireless temperature measurement system that transmits the collected temperature data to the data receiving end through the Zigbee network . However, the application of existing wireless sensor systems is limited due to the following defects: [0003] First of all, wireless sensors are generally powered by batteries with limited energy, requiring frequent battery replacement...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/08G08C17/00H04L12/28
Inventor 曾永平周旻王宏伟
Owner BEIJING BEIKE ETUNG TECH
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