Claims
- 1. An acceleration sensor comprising:
- a sensor case for forming a closed space;
- a gas enclosed in said closed spaced of said sensor case; and
- a pair of heat temperature sensing resistor elements provided in said sensor case and exposed to said closed space for creating a temperature distribution in said closed space by heating said gas and for detecting the temperature changes in said resistor elements caused by acceleration of said sensor case, said pair of heat temperature sensing resistor elements forming a bridge circuit together with a pair of standard resistors.
- 2. An acceleration sensor according to claim 1, wherein said pair of standard resistors are formed by heat temperature-sensing resistor element and are disposed in said sensor case together with said pair of heat temperature-sensing resistor elements to constitute a bridge circuit.
- 3. An acceleration sensor comprising:
- a sensor case for forming a closed space;
- a gas enclosed in said closed space of said sensor case;
- a pair of heat temperature sensing resistor elements provided in said sensor case and exposed to said closed space for creating a temperature distribution in said closed space by heating said gas and for detecting the temperature changes in said resistor elements caused by acceleration of said sensor case; and
- a heater provided in said sensor case and exposed to said closed space, and said pair of heat temperature-sensing resistor elements are disposed at a predetermined distance from said heater in a direction of acceleration.
- 4. An acceleration sensor according to claim 3 further comprising a plurality of heaters disposed in a direction of acceleration and positioned on both sides of said pair of heat temperature-sensing resistor elements.
- 5. An acceleration sensor comprising:
- a sensor case for forming a closed space;
- a gas enclosed in said closed spaced of said sensor case;
- a pair of heat temperature sensing resistor elements provided in said sensor case and exposed to said closed space for creating a temperature distribution in said closed space by heating said gas and for detecting the temperature changes in said resistor elements caused by acceleration of said sensor case; and
- wherein said gas enclosed in said closed space is a pressurized gas with a low heat transfer coefficient.
Priority Claims (4)
Number |
Date |
Country |
Kind |
6-4444 |
Jan 1994 |
JPX |
|
6-5811 |
Jan 1994 |
JPX |
|
6-64322 |
Feb 1994 |
JPX |
|
6-54121 |
Mar 1994 |
JPX |
|
Parent Case Info
This is a Continuation of Ser. No. 08/376,155, filed Jan. 20, 1995, which will issue as U.S. Pat. No. 5,719,333 on Feb. 17, 1998.
US Referenced Citations (25)
Foreign Referenced Citations (9)
Number |
Date |
Country |
59-218913 |
Dec 1984 |
JPX |
63-81269 |
Apr 1988 |
JPX |
63-118667 |
May 1988 |
JPX |
63-293471 |
Nov 1988 |
JPX |
63-293472 |
Nov 1988 |
JPX |
63-298068 |
Dec 1988 |
JPX |
63-298067 |
Dec 1988 |
JPX |
63-298066 |
Dec 1988 |
JPX |
3-176669 |
Jul 1991 |
JPX |
Continuations (1)
|
Number |
Date |
Country |
Parent |
376155 |
Jan 1995 |
|