Wireless sensor network node device used for environmental monitoring

A wireless sensor and network node technology, applied in the direction of comprehensive factory control, comprehensive factory control, electrical program control, etc., can solve the problems of not fully adapting to the monitoring environment, short circuit of sensor nodes, inappropriate device selection, etc., to achieve low power consumption , Wide operating temperature range and reasonable structure

Inactive Publication Date: 2007-09-26
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example: the node is powered by two dry batteries, so even if the node itself has low power consumption, but because it is used in a humid environment without certain protection measures, or the quality of the battery itself causes the battery to discharge itself, the node will also It will quickly fail du

Method used

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  • Wireless sensor network node device used for environmental monitoring
  • Wireless sensor network node device used for environmental monitoring
  • Wireless sensor network node device used for environmental monitoring

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0025] Example one:

[0026] The above-mentioned wireless sensor network node main board is implemented according to the structure of Fig. 1 and Fig. 2. The main board mainly includes a processor unit 1, a memory unit 2, a sensor unit 3, and a power supply unit 4. The single-chip microprocessor chip U1 selects the high-end eight-bit single-chip ATmega128L of AT Company. It has the following characteristics: a maximum operating frequency of 8MHz, most instructions are completed in one cycle, and a high operating rate; on-chip 128kFlash, 4kSRAM and 4kEEPROM; support power saving mode, power-down mode and other sleep modes; with multiple buses and Sufficient input and output interfaces; with A / D and D / A interfaces; low voltage; small size. The random number generation chip U4 adopts DS2401 produced by Dallas Company, and is connected to the single-chip microprocessor chip U1. Generate a random number as a distinguishing identifier for each node. The temperature and humidity sensor U7...

Example Embodiment

[0027] Embodiment two:

[0028] The above-mentioned wireless transceiver module 5 uses Chipcon's CC1000 module, which features: low power supply voltage: 2.3V-3.6V, extremely low power consumption, and working frequency bands of 315, 868, and 915 MHz. It is connected to the main board through the wireless transceiver module interface J4 and the wireless transceiver module power interface J5. The wireless transceiver module interface J4 and the wireless transceiver module power interface J5 are made into two parts and distributed diagonally so as to be firmly installed on the main board. The wireless transceiver module interface J4 is a data line interface, and the wireless transceiver module power interface J5 is a power line and ground wire interface. The antenna adopts a spiral spring antenna, which is short and occupies less space and is not easily damaged.

Example Embodiment

[0029] Example three:

[0030] The aforementioned communication module 6 with the terminal mainly includes a "RS232" level conversion unit and a voltage conversion unit. The "RS232" level conversion chip U9 selects MAX3317E from MAXIM Company, which has the following main features: 2.25V-3.3V power supply, ±15kV electrostatic protection, 1uA receiving effective shutdown mode, 460kbps data transmission rate. The terminal communication module interface J2 is connected to the "RS232" level conversion chip U9, and the "RS232" level conversion chip U9 is connected to the "RS232" interface J7. Since this module generally does not work in the field, and does not need to be set up with the node (only when an individual node communicates with the terminal effectively or the terminal is connected to the node before the node is deployed), the mechanical strength and the adaptability to the environment are required. not tall. You can choose to use the rechargeable battery on the node to suppl...

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Abstract

This invention relates to one wireless sensor network point device for animal and plant grow and cultivation indoor chamber, nuclear pollution area, atmosphere and industry spot environment monitor for environment temperature and humidity and atmosphere monitor; in the network, the point work environment is of complex one and independent unit with proper structure and special energy consumption, reliability and life cycle.

Description

technical field [0001] The invention is suitable for environmental monitoring of greenhouses for animal breeding and plant cultivation, nuclear pollution areas, meteorology, industrial sites, etc., and relates to the technical field of wireless sensor networks for monitoring environmental temperature, humidity and atmospheric pressure. Background technique [0002] The current situation of environmental monitoring is weak, and there are two main methods: one is to rely on personnel to arrive at the scene for monitoring, that is, to rely on the experience of monitoring personnel for manual observation or to use monitoring instruments such as temperature and humidity meters for manual on-site measurement. Compared with the original monitoring method, it is a serious waste of human resources, lacks real-time and proper scientificity, and is not suitable for occasions that require high real-time performance, nor is it suitable for occasions that require long-term or frequent moni...

Claims

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Application Information

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IPC IPC(8): G05B19/418
CPCY02P90/02
Inventor 陈俊杰徐本崇
Owner SOUTHEAST UNIV
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