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A zigbee wireless sensor node that can be connected to field indicating instruments

A technology of wireless sensor nodes and indicating instruments, applied in wireless communication, services based on specific environments, electrical components, etc., can solve problems such as reducing system reliability and increasing system cost

Active Publication Date: 2020-08-25
上海米尔圣传感器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, these parameters are connected to the Internet of Things by collecting them through a dedicated Internet of Things data acquisition module on the basis of existing measurement and control instruments. This method not only increases the cost of the system, but also reduces the reliability of the system.

Method used

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  • A zigbee wireless sensor node that can be connected to field indicating instruments
  • A zigbee wireless sensor node that can be connected to field indicating instruments
  • A zigbee wireless sensor node that can be connected to field indicating instruments

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1: A kind of Zigbee wireless sensor node that can be connected with field indicating instrument of this embodiment, such as figure 1 As shown, it includes V-level voltage signal conditioning unit 1, mV-level voltage and mA-level current signal conditioning unit 2, thermocouple temperature compensation unit 3, resistance signal conditioning unit 4, 2.5V reference voltage unit 5, and multiple signal selection unit 6 , AD conversion unit 7, pulse signal conditioning unit 8, relay control unit 9, Zigbee system-on-chip unit 10, radio frequency unit 11, keyboard display circuit 15, RS485 interface circuit 12 and resistance signal output unit 13 and the whole Zigbee wireless sensor node The power supply unit 14 that provides the working voltage, the output terminals of the V-level voltage signal conditioning unit, the mV-level voltage and mA-level current signal conditioning unit, the thermocouple temperature compensation unit and the resistance signal conditioning u...

Embodiment 2

[0059] Embodiment 2: A kind of Zigbee wireless sensor node that can be connected with field indicating instrument of this embodiment, such as Figure 9 As shown, the radio frequency unit includes an inductor L82, an inductor L83, a radio frequency chip U82 and an interface SMB2, and the radio frequency chip U82 adopts an RFX2401 radio frequency chip; the 26 pins of the Zigbee system-on-chip chip U81 are connected to one end of the capacitor C813 and the inductor L82, and the Zigbee on-chip The pin 25 of the system chip U81 is connected to one end of the capacitor C816 via the capacitor C814, the other end of the inductor L82 is connected to the other end of the capacitor C816 and connected to the 4 pin of the radio frequency chip U82 via the capacitor C817, and the connection point of the capacitor C813 and the inductor L82 is connected via Capacitor C815 is grounded, the connection point of capacitor C814 and capacitor C816 is grounded through inductor L83, pins 5 and 6 of the...

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PUM

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Abstract

The invention relates to a Zigbee wireless sensing node capable of being matched and connected with an on-site indicating instrument, comprising a multi-channel signal selection unit, and a V-grade voltage signal conditioning unit, an mV-grade voltage and mA-grade current signal conditioning unit, a thermocouple temperature compensation unit and a resistance signal conditioning unit which are connected with input ends of the multi-channel signal selection unit; wherein an output end of the multi-channel signal selection unit is connected with an input end of an AD conversion unit, the multi-channel signal selection unit and the AD conversion unit are connected with a Zigbee system-on-chip unit, and the Zigbee system-on-chip unit is also connected with a relay control unit, a pulse signal conditioning unit, a keyboard display circuit, an RS485 interface circuit, a radio frequency unit and a resistance signal output unit. The Zigbee wireless sensing node of the invention integrates the functions of measurement, control, display and wireless transmission, has a function of on-site digital or analog indication, and can perform measurement, control and wireless transmission for multipleparameters such as liquid level, temperature, pressure and rotation speed, thereby effectively reducing system cost, and improving system reliability.

Description

technical field [0001] The present invention relates to a Zigbee wireless sensor node, in particular to a Zigbee wireless sensor node that can be connected to on-site indicating instruments, which can be connected to on-site analog indicating instruments and on-site digital indicating instruments, and has multiple The characteristics of the parameters. Background technique [0002] With the development and application of the Internet of Things and big data technology, key data such as liquid level (water level, oil level), temperature, pressure, etc., not only require on-site measurement and control, but also require remote monitoring and data collection through the Internet of Things. At present, these parameters are connected to the Internet of Things on the basis of existing measurement and control instruments, and are collected through a dedicated Internet of Things data acquisition module. This method not only increases the cost of the system, but also reduces the relia...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/38H04W84/18
CPCH04W4/38H04W84/18
Inventor 谢少伟
Owner 上海米尔圣传感器有限公司