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Wireless kilowatt meter reading-out system

A wireless meter reading and wireless chip technology, applied in signal transmission systems, instruments, etc., can solve the problems of long-distance meter reading that cannot be effectively solved, high manufacturing costs, and high power consumption of power amplifier circuits. Low manufacturing and use costs, long-distance meter reading, and low energy consumption

Active Publication Date: 2007-11-21
LIERDA SCI & TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantages: because the power amplifier circuit not only consumes a lot of power, but also has a high manufacturing cost, it is impossible to add a power amplifier circuit to each wireless module, so that the problem of long-distance meter reading has not been effectively solved

Method used

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  • Wireless kilowatt meter reading-out system
  • Wireless kilowatt meter reading-out system
  • Wireless kilowatt meter reading-out system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] Embodiment 1: with reference to accompanying drawing 2 and 3. The wireless meter reading system, single-chip microcomputer 2 is the prior art, and will not be described here. The reset terminal of the single-chip microcomputer 2 is connected with the signal terminal of the reset circuit 1, the debugging interface of the single-chip microcomputer 2 is connected with the signal terminal of JTAG3, the data interface of the single-chip microcomputer 2 is connected with the signal terminal of the wireless transceiver circuit 4, and the wireless transceiver circuit 4 is composed of a wireless chip and a matching circuit configuration. The wireless transceiver circuit 4 is produced by Hangzhou Lierda Technology Co., Ltd. The signal end of the wireless transceiver circuit 4 is connected with the signal end of the high frequency switch 5, and the signal input end and the signal output end of the high frequency switch 5 are respectively connected with the signal output end of th...

Embodiment 2

[0010] Embodiment 2: On the basis of Embodiment 1, the signal terminal RFIN of the wireless transceiver circuit 4 is connected to pin 5 of the high-frequency switch 5, and pins 4 and 6 of the high-frequency switch 5 are respectively connected to pins 4 and 6 of the high-frequency switch 8. 4 pins and 6 pins of the pin and the NOT gate circuit, 1 pin of the NOT gate circuit is connected to the signal end of the wireless chip in the wireless transceiver circuit 4, and 3 pins and 6 pins of the NOT gate circuit are connected in parallel. Pin 1 and pin 3 of high frequency switch 5 and high frequency switch 8 are respectively connected to the signal input and output terminals of low noise amplifier circuit and power amplifier circuit, and pin 5 of high frequency switch 8 is connected to antenna 9 through capacitor.

Embodiment 3

[0011] Embodiment 3: On the basis of Embodiment 1 and 2, the power amplifier circuit is composed of capacitor C 9 、C 10 、C 6 , inductance L 2 and U 5 Composition, C 10 One end is connected to pin 3 of high frequency switch 5, C 10 The other end is connected to U 5 The 6-pin, U 5 3 pins connected to L 2 one end and C 6 end of the L 2 The other end of the C 9 one end and U 5 ground terminal, C 9 The other end of the ground, C 6 The other end of the high-frequency switch is connected to pin 81; the low-noise amplifier circuit consists of a capacitor C 1 ~C 4 、C 8 and U 1 Composition, C 4 One end of the high-frequency switch 5 pin 1, C 4 The other end of the U 1 The 3 pins, U 1 4 pins connected to C 1 、C 3 end of the C 1 、C 3 The other end is connected to ground, U 1 Pin 1 connects to C 8 , L 1 end of the C 8 the other end and the U 1 2 pins are grounded, L 1 The other end is connected to C 2 end of the C 2 The other end is connected to pin 3 of the...

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Abstract

A radio meter-copying system is prepared as connecting reset end of monolithic computer to signal end of reset circuit and debugging interface to signal end of JIAG as well as data interface to signal end of radio transceiver circuit, connecting signal end of radio transceiver circuit to signal end of high frequency switch, connecting signal input end and output end of said switch separately to low noise amplification circuit and power amplification circuit and connecting signal transceiver end of high frequency switch to antenna.

Description

technical field [0001] The invention relates to a meter reading system for water meters, gas meters, heat meters and electric meters, and belongs to the field of wireless meter reading system manufacturing. Background technique [0002] In the existing wireless meter reading system, each terminal meter (water meter, gas meter, heat meter, electric meter) has a wireless part (or module, or chip), and there is such a wireless part (or module, or chip) in the relay and handheld devices. part. Users can read the data of the terminal table through the relay or handheld device, or modify the parameters of the terminal table. Because the communication distance of the wireless chip CC1100 currently used is relatively short, generally less than 300 meters, it cannot be used for long-distance meter reading. In order to overcome this defect, in the prior art, a common practice is to add a power amplifier circuit on the basis of the existing module circuit. Its disadvantages: because...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08C17/02
Inventor 季燕飞周连廷董漪杰郑经欧贾灵
Owner LIERDA SCI & TECH GRP
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