FR2270386A2 - Device indicating presence of frost on road - has wheatstone bridge with air, road surface and sub-surface resistors - Google Patents
Device indicating presence of frost on road - has wheatstone bridge with air, road surface and sub-surface resistorsInfo
- Publication number
- FR2270386A2 FR2270386A2 FR7415610A FR7415610A FR2270386A2 FR 2270386 A2 FR2270386 A2 FR 2270386A2 FR 7415610 A FR7415610 A FR 7415610A FR 7415610 A FR7415610 A FR 7415610A FR 2270386 A2 FR2270386 A2 FR 2270386A2
- Authority
- FR
- France
- Prior art keywords
- road
- sub
- resistors
- wheatstone bridge
- frost
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
- G01K7/18—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a linear resistance, e.g. platinum resistance thermometer
- G01K7/20—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a linear resistance, e.g. platinum resistance thermometer in a specially-adapted circuit, e.g. bridge circuit
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01W—METEOROLOGY
- G01W1/00—Meteorology
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B19/00—Alarms responsive to two or more different undesired or abnormal conditions, e.g. burglary and fire, abnormal temperature and abnormal rate of flow
- G08B19/02—Alarm responsive to formation or anticipated formation of ice
Landscapes
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Ecology (AREA)
- Environmental Sciences (AREA)
- Road Signs Or Road Markings (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7415610A FR2270386A2 (en) | 1974-05-06 | 1974-05-06 | Device indicating presence of frost on road - has wheatstone bridge with air, road surface and sub-surface resistors |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7415610A FR2270386A2 (en) | 1974-05-06 | 1974-05-06 | Device indicating presence of frost on road - has wheatstone bridge with air, road surface and sub-surface resistors |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2270386A2 true FR2270386A2 (en) | 1975-12-05 |
FR2270386B2 FR2270386B2 (fr) | 1977-03-04 |
Family
ID=9138488
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7415610A Granted FR2270386A2 (en) | 1974-05-06 | 1974-05-06 | Device indicating presence of frost on road - has wheatstone bridge with air, road surface and sub-surface resistors |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2270386A2 (fr) |
-
1974
- 1974-05-06 FR FR7415610A patent/FR2270386A2/fr active Granted
Also Published As
Publication number | Publication date |
---|---|
FR2270386B2 (fr) | 1977-03-04 |
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