Wireless temperature measuring system

• US 8,981,943 B2
• Filed: 11/23/2010
• Issued: 03/17/2015
• Est. Priority Date: 11/16/2009
• Status: Active Grant

• Current Assignee: AMT Wireless Europe, Co., Wuhan Amate Technology Company Limited
• Original Assignee: AMT Wireless Europe, Co., Wuhan Amate Technology Company Limited
• Inventors: Zhang, Changhuan
• Primary Examiner(s): Nguyen, Tai T
• Assistant Examiner(s): NWUGO, OJIAKO K
• Application Number:
  US12/953,428
• Publication Number:
  US 20110115636A1
• Time in Patent Office: 1,575 Days
• US Class Current: 340/584
• CPC Class Codes: G01K 1/024 for remote indication
• CPC Class Codes: H04Q 2209/40 using a wireless architecture
• CPC Class Codes: H04Q 2209/823 where the data is sent when the measured values exceed a threshold, e.g. sending an alarm
• CPC Class Codes: H04Q 9/00 Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom

Abstract

A wireless temperature measuring system, including multiple wireless temperature sensors, and multiple communication terminals; the wireless temperature sensors communicate with the communication terminals via RF, the wireless temperature sensor operates to obtain temperature signals from a temperature detection point, to perform cross-interleaved error correction encoding on the temperature signals whereby obtaining coded temperature signals, and to transmit the coded temperature signals to the communication terminals via RF; the communication terminal operates to receive and decode the coded temperature signals from the wireless temperature sensor, and to obtain decoded temperature signals.

Claims

1. A wireless temperature measuring system,

comprising:

multiple wireless temperature sensors; and

multiple communication terminals;

wherein

said wireless temperature sensors communicate with said communication terminals via radio frequency (RF);

said wireless temperature sensors operate to obtain temperature signals from a temperature detection point, to perform cross-interleaved error correction encoding on said temperature signals whereby obtaining coded temperature signals, and to transmit said coded temperature signals to said communication terminals via RF;

said communication terminals operate to receive and decode said coded temperature signals from said wireless temperature sensors, and to obtain decoded temperature signals;

each of said wireless temperature sensors comprises a temperature collection module, an analog/digital (A/D) conversion module, a first micro-controller unit (MCU) module, and a first RF module;

said temperature collection module operates to collect temperature of said temperature detection point whereby obtaining an analog temperature signal, to transmit said analog temperature signal to said A/D conversion module, and to transmit an ID number of said temperature collection module to said first MCU module;

said A/D conversion module operates to receive said analog temperature signal from said temperature collection module, to perform A/D conversion on said analog temperature signal whereby obtaining a digital temperature signal, and to transmit said digital temperature signal to said first MCU module;

said first MCU module operates to receive said digital temperature signal from said A/D conversion module, and said ID number of said temperature collection module from said temperature collection module, to pack said digital temperature signal and said ID number of said temperature collection module with data frames whereby obtaining a temperature signal data packet, to perform cross-interleaved error correction encoding on said temperature signal data packet whereby obtaining a coded temperature signal, and to transmit said coded temperature signal to said first RF module;

said first RF module operates to receive said coded temperature signal from said first MCU module, and to transmit said coded temperature signal to said communication terminal;

each of said multiple communication terminals comprises a second RF module, a second MCU module, and a display module;

said second RF module operates to receive said coded temperature signal from said first RF module, and to transmit said coded temperature signal to said second MCU module;

said second MCU module operates to receive said coded temperature signal from said second RF module, to decode said coded temperature signal whereby obtaining a decoded temperature signal, and to transmit said decoded temperature signal to said display module;

said display module operates to receive and to display said decoded temperature signal from said second MCU module;

said first MCU module further operates to detect whether an RF signal exists at a main frequency point of said first RF module after receiving said coded temperature signal, to transmit said coded temperature signal to said first RF module and to inform said first RF module to transmit said coded temperature signal via said main frequency point if no RF signal exists at a main frequency point of said first RF module, or to transmit said coded temperature signal to said first RF module and to inform said first RF module to transmit said coded temperature signal via an auxiliary frequency point if said RF signal exists at a main frequency point of said first RF module;

said second MCU module further operates to set values of said main frequency point and said auxiliary frequency point, to pack said values of said main frequency point and said auxiliary frequency point with data frames whereby obtaining a frequency point packet, to perform cross-interleaved error correction encoding on said frequency point packet whereby obtaining a coded frequency point, and to transmit said coded frequency point to said second RF module;

said second RF module further operates to receive said coded frequency point from said second MCU module, and to transmit said coded frequency point to said first RF module via RF;

said first RF module further operates to receive said coded frequency point from said second RF module, and to transmit said coded frequency point to said first MCU module; and

said first MCU module further operates to receive said coded frequency point from said first RF module, to decode said coded frequency point whereby obtaining values of said main frequency point and said auxiliary frequency point, and to set said main frequency point and said auxiliary frequency point of said first RF module.

2. A wireless temperature measuring system,

comprising:

multiple wireless temperature sensors; and

multiple communication terminals;

wherein

said wireless temperature sensors communicate with said communication terminals via radio frequency (RF);

said wireless temperature sensors operate to obtain temperature signals from a temperature detection point, to perform cross-interleaved error correction encoding on said temperature signals whereby obtaining coded temperature signals, and to transmit said coded temperature signals to said communication terminals via RF;

said communication terminals operate to receive and decode said coded temperature signals from said wireless temperature sensors, and to obtain decoded temperature signals;

each of said wireless temperature sensors comprises a temperature collection module, an analog/digital (A/D) conversion module, a first micro-controller unit (MCU) module, and a first RF module;

said temperature collection module operates to collect temperature of said temperature detection point whereby obtaining an analog temperature signal, to transmit said analog temperature signal to said A/D conversion module, and to transmit an ID number of said temperature collection module to said first MCU module;

said A/D conversion module operates to receive said analog temperature signal from said temperature collection module, to perform A/D conversion on said analog temperature signal whereby obtaining a digital temperature signal, and to transmit said digital temperature signal to said first MCU module;

said first MCU module operates to receive said digital temperature signal from said A/D conversion module, and said ID number of said temperature collection module from said temperature collection module, to pack said digital temperature signal and said ID number of said temperature collection module with data frames whereby obtaining a temperature signal data packet, to perform cross-interleaved error correction encoding on said temperature signal data packet whereby obtaining a coded temperature signal, and to transmit said coded temperature signal to said first RF module;

said first RF module operates to receive said coded temperature signal from said first MCU module, and to transmit said coded temperature signal to said communication terminal;

each of said communication terminals comprises a second RF module, a second MCU module, and a display module;

said first MCU module further operates to detect whether said digital temperature signal matches an alarm temperature signal condition after receiving said digital temperature signal, to pack said digital temperature signal and said ID number of said temperature collection module with data frames whereby obtaining a normal temperature signal packet, to perform cross-interleaved error correction encoding on said normal temperature signal packet whereby obtaining a coded normal temperature signal, and to transmit said coded normal temperature signal to said first RF module if said digital temperature signal does not meet an alarm temperature signal condition, or to pack said digital temperature signal, said ID number of said temperature collection module, and a temperature alarm ID with data frames whereby obtaining an alarm temperature signal packet, to perform cross-interleaved error correction encoding on said alarm temperature signal packet whereby obtaining a coded alarm temperature signal, and to transmit said coded alarm temperature signal to said first RF module if said digital temperature signal matches an alarm temperature signal condition;

said first RF module further operates to receive said coded normal temperature signal from said first MCU module, and to transmit said coded normal temperature signal to said communication terminal via RF if said digital temperature signal does not meet an alarm temperature signal condition, or to receive said coded alarm temperature signal from said first MCU module, and to transmit said coded alarm temperature signal to said communication terminal via RF if said digital temperature signal matches an alarm temperature signal condition;

each communication terminal further comprises an alarm module;

said second RF module further operates to receive said normal temperature signal from said first RF module, and to transmit said normal temperature signal to said second MCU module if said digital temperature signal does not meet an alarm temperature signal condition, or to receive said alarm temperature signal from said first RF module, and to transmit said alarm temperature signal to said second MCU module if said digital temperature signal matches an alarm temperature signal condition;

said second MCU module further operates to receive said normal temperature signal from said second RF module, to decode said normal temperature signal whereby obtaining a decoded normal temperature signal, and to transmit said decoded normal temperature signal to said display module if said digital temperature signal does not meet an alarm temperature signal condition, or to receive said alarm temperature signal from said second RF module, to decode said alarm temperature signal whereby obtaining a decoded alarm temperature signal, to transmit said decoded alarm temperature signal to said display module, and to inform said alarm module to send an alarm if said digital temperature signal matches an alarm temperature signal condition;

said display module further operates to receive and to display said decoded normal temperature signal from said second MCU module if said digital temperature signal does not meet an alarm temperature signal condition, or to receive and to display said decoded alarm temperature signal from said second MCU module if said digital temperature signal matches an alarm temperature signal condition;

said second MCU module further operates to set said alarm temperature signal condition and a reporting period thereof, to pack said alarm temperature signal condition and said reporting period thereof with data frames whereby obtaining an alarm temperature signal condition packet, and a reporting period packet, to perform cross-interleaved error correction encoding on said alarm temperature signal condition packet and said reporting period packet whereby obtaining a coded alarm temperature signal condition and a coded reporting period, and to transmit said coded alarm temperature signal condition and said coded reporting period to said second RF module;

said second RF module further operates to receive said coded alarm temperature signal condition and said coded reporting period from said second MCU module, and to transmit said coded alarm temperature signal condition and said coded reporting period to said first RF module;

said first RF module further operates to receive said coded alarm temperature signal condition and said coded reporting period from said second RF module, and to transmit said coded alarm temperature signal condition and said coded reporting period to said first MCU module; and

said first MCU module further operates to receive said coded alarm temperature signal condition and said coded reporting period from said first RF module, and to decode said coded alarm temperature signal condition and said coded reporting period whereby obtaining said alarm temperature signal condition and said reporting period thereof.