Temperature monitor for electro-mechanical part

• US 7,005,992 B2
• Filed: 12/17/2001
• Issued: 02/28/2006
• Est. Priority Date: 12/27/2000
• Status: Expired due to Fees

• Current Assignee: Sanyo Electric Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Sanyo Electric Company Limited (Panasonic Holdings Corporation)
• Inventors: Kawai, Sigekazu, Kuribara, Hiroyuki, Ishikura, Tsutomu
• Primary Examiner(s): Hofsass, Jeffery
• Assistant Examiner(s): MEHMOOD, JENNIFER
• Application Number:
  US10/451,829
• Publication Number:
  US 20040052294A1
• Time in Patent Office: 1,534 Days
• Field of Search: 340/588, 340/635, 340/693.5, 340/870.17, 374/25, 116/101, 116/216, 702/130, 702/132, 702/133, 702/134, 702/136
• US Class Current: 340/588
• CPC Class Codes: G01K 1/024 for remote indication

Abstract

A temperature monitor includes a temperature sensor, a transmitter, and a controller. The temperature sensor generates a temperature signal based upon a detected temperature and the controller controls the temperature sensor to generate the temperature signal and controls the transmitter to transmit the temperature signal along with a time at a first predetermined interval.

Claims

1. A temperature monitoring system for an electric power-applied section, comprising:

a temperature history recording means for measuring a temperature of said electric power-applied section and recording said temperature as a temperature history together with its measurement time; and

a control means for controlling the recording and a transmitting operation of said temperature history at a first predetermined interval,

wherein said temperature history recording means comprises;

a temperature sensor that generates a temperature detection signal according to said temperature;

a memory that stores, as said temperature history, a measured temperature and a measurement time based on said temperature detection signal; and

a housing comprising a watertight circuit housing portion being formed to make a thermometric surface of said temperature sensor contact a measured object, wherein said memory comprises;

a history memory that stores, in a time series, said temperature history; and

a temperature alarm memory that stores, in a time series, as a temperature alarm, a temperature history being out of a range of a normal temperature, and

wherein;

said control means controls said temperature history recording means to conduct a recording operation of the temperature history at a second predetermined time interval that is shorter than said first predetermined time interval when a temperature history is stored in said temperature alarm memory.

2. A temperature monitor comprising:

a temperature sensor that generates a temperature signal based upon a detected temperature;

a transmitter; and

a controller that controls the temperature sensor to generate said temperature signal and that controls said transmitter to transmit said temperature signal along with a time signal at a first predetermined interval, wherein said controller controls said transmitter to transmit said temperature signal and said time signal at a second predetermined time interval that is shorter than said first predetermined interval if said temperature signal indicates that said detected temperature is outside of a predetermined temperature range.

3. The monitor of claim 2, wherein the controller controls said transmitter to further transmit a temperature alarm signal if said temperature signal indicates that said detected temperature is outside of a predetermined temperature range.