NL7609696A - Direction sensitive flow speed meter - consists of chip with sensor section and data process section using temp. sensitive transistors at front and back - Google Patents
Direction sensitive flow speed meter - consists of chip with sensor section and data process section using temp. sensitive transistors at front and backInfo
- Publication number
- NL7609696A NL7609696A NL7609696A NL7609696A NL7609696A NL 7609696 A NL7609696 A NL 7609696A NL 7609696 A NL7609696 A NL 7609696A NL 7609696 A NL7609696 A NL 7609696A NL 7609696 A NL7609696 A NL 7609696A
- Authority
- NL
- Netherlands
- Prior art keywords
- temp
- chip
- sensitive
- transistors
- flow speed
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
- G01P5/10—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring thermal variables
- G01P5/12—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring thermal variables using variation of resistance of a heated conductor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P13/00—Indicating or recording presence, absence, or direction, of movement
- G01P13/02—Indicating direction only, e.g. by weather vane
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Measuring Volume Flow (AREA)
Abstract
A direction sensitive flow speed meter measures a gas or a liquid flowing through a pipe. The circuit contains a chip with an integrated sensor section and signal processing sections. It can be heated up so that a temp. gradient is produced as a function of the flow speed. This temp. gradient is converted into an electrical signal. The sensor section of the chip (1) consists of two or more temp. sensitive transistors (T2 3 4) looked at from the measuring device, one of the transistors is at the front edge and another at the back edge of the chip. The temp. sensitive transistor on the front and back of the chip are balanced. If the flow is zero, the difference in output signals between the transistors at the front and back is zero.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL7609696A NL7609696A (en) | 1976-08-31 | 1976-08-31 | Direction sensitive flow speed meter - consists of chip with sensor section and data process section using temp. sensitive transistors at front and back |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL7609696A NL7609696A (en) | 1976-08-31 | 1976-08-31 | Direction sensitive flow speed meter - consists of chip with sensor section and data process section using temp. sensitive transistors at front and back |
Publications (1)
Publication Number | Publication Date |
---|---|
NL7609696A true NL7609696A (en) | 1978-03-02 |
Family
ID=19826827
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL7609696A NL7609696A (en) | 1976-08-31 | 1976-08-31 | Direction sensitive flow speed meter - consists of chip with sensor section and data process section using temp. sensitive transistors at front and back |
Country Status (1)
Country | Link |
---|---|
NL (1) | NL7609696A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4373386A (en) * | 1979-07-09 | 1983-02-15 | Brooks Instrument B.V. | Direction sensitive flow velocity meter and sensing plate to be used on it |
US4637253A (en) * | 1984-05-22 | 1987-01-20 | Kabushiki Kaisha Toshiba | Semiconductor flow detector for detecting the flow rate and flowing direction of fluid |
NL1001340C2 (en) * | 1995-10-04 | 1997-04-08 | Zwaan Adrianus J | Ventilation system provided with a ventilation device with an airflow direction sensor. |
ES2214122A1 (en) * | 2002-12-20 | 2004-09-01 | Universidad De Jaen | Bidirectional micro flow sensor for measuring gas flow direction of circuit in heater at e.g. medicine field, has heating structure located between NPN-type silicon structures, and metal structure fixed with tunnel on ceramic substrate |
CN104950133A (en) * | 2015-07-06 | 2015-09-30 | 浙江大学 | Microfluidic flow rate sensor chip, detection system and detection method |
-
1976
- 1976-08-31 NL NL7609696A patent/NL7609696A/en not_active Application Discontinuation
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4373386A (en) * | 1979-07-09 | 1983-02-15 | Brooks Instrument B.V. | Direction sensitive flow velocity meter and sensing plate to be used on it |
US4637253A (en) * | 1984-05-22 | 1987-01-20 | Kabushiki Kaisha Toshiba | Semiconductor flow detector for detecting the flow rate and flowing direction of fluid |
NL1001340C2 (en) * | 1995-10-04 | 1997-04-08 | Zwaan Adrianus J | Ventilation system provided with a ventilation device with an airflow direction sensor. |
EP0767386A1 (en) * | 1995-10-04 | 1997-04-09 | Adrianus Jacobus Zwaan | Ventilation system comprising a ventilating device with an air-flow direction sensor |
ES2214122A1 (en) * | 2002-12-20 | 2004-09-01 | Universidad De Jaen | Bidirectional micro flow sensor for measuring gas flow direction of circuit in heater at e.g. medicine field, has heating structure located between NPN-type silicon structures, and metal structure fixed with tunnel on ceramic substrate |
CN104950133A (en) * | 2015-07-06 | 2015-09-30 | 浙江大学 | Microfluidic flow rate sensor chip, detection system and detection method |
CN104950133B (en) * | 2015-07-06 | 2017-12-15 | 浙江大学 | Microfluid flow velocity sensing chip, detecting system and detection method |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0369530A3 (en) | Temperature sensing circuit | |
ATE70911T1 (en) | FLOWMETER. | |
ES2047818T3 (en) | MASS FLOWMETERS WITH TEMPERATURE DETECTORS. | |
KR850003804A (en) | Air flow measurement circuit with temperature compensation circuit | |
ATE38433T1 (en) | ELECTRONIC MEASUREMENT DEVICE FOR SQUARE ROOT ERROR. | |
FR2457480A1 (en) | DEVICE FOR MEASURING A LIQUID LEVEL | |
US3733897A (en) | Sensor assembly for vortex-type flowmeters | |
NL7609696A (en) | Direction sensitive flow speed meter - consists of chip with sensor section and data process section using temp. sensitive transistors at front and back | |
FR2457495A1 (en) | SIGNAL MEASURING APPARATUS | |
GB2017914A (en) | Improvements in or relating to ultrasonic flowmeters | |
SE7411769L (en) | PHASE-SELECTIVE DEVICE | |
RU2036430C1 (en) | Method of determination of parameters of currents on sea surface | |
SU638896A1 (en) | Thermoanemometric transducer | |
KR840001334A (en) | Flow rate or flow rate measuring device | |
EP0039460A3 (en) | Electronic clinical thermometer | |
CRAFT | Measuring techniques for fluid devices(Dynamic pressure and flow measurements on small integrated high speed systems, using high speed pressure transducing equipment in integrated circuits and hot-wire anemometry) | |
JPS568544A (en) | Method and device for detection of bubble in liquid | |
JPS51126175A (en) | Device for measuring velority of flow | |
JPS5368275A (en) | Ultrasonic flowmeter | |
CHEVRAY et al. | On velocity measurements in non-isothermal turbulent flows(Hot-wire anemometric velocity measurements in nonisothermal turbulent flows, compensating for local temperature effects on downstream wire) | |
JPS531071A (en) | Thermal noise thermometer | |
US3610049A (en) | Fluid vortex device | |
FR2363784A1 (en) | Vortex fluid flow meter - has conduit restrictor inducing vortex and frequency monitor to measure frequency of vortex produced | |
JPS5739623A (en) | Integrated circuit device | |
JPS5778666A (en) | Tracking state detecting circuit |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
BC | A request for examination has been filed | ||
A85 | Still pending on 85-01-01 | ||
BI | The patent application has been withdrawn |