GB2070776A - A sensor for a physical value - Google Patents
A sensor for a physical value Download PDFInfo
- Publication number
- GB2070776A GB2070776A GB8102817A GB8102817A GB2070776A GB 2070776 A GB2070776 A GB 2070776A GB 8102817 A GB8102817 A GB 8102817A GB 8102817 A GB8102817 A GB 8102817A GB 2070776 A GB2070776 A GB 2070776A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sensor
- physical value
- value
- physical
- parameter
- 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.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P7/00—Arrangements of distributors, circuit-makers or -breakers, e.g. of distributor and circuit-breaker combinations or pick-up devices
- F02P7/06—Arrangements of distributors, circuit-makers or -breakers, e.g. of distributor and circuit-breaker combinations or pick-up devices of circuit-makers or -breakers, or pick-up devices adapted to sense particular points of the timing cycle
- F02P7/067—Electromagnetic pick-up devices, e.g. providing induced current in a coil
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
-
- 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
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/42—Devices characterised by the use of electric or magnetic means
Abstract
A sensor 10 is proposed for a physical value (for example speed, path, angular position, pressure) wherein the sensor output value is influenced by a second physical value (for example temperature, pressure). This influence is used to sense the said second physical value whereby two physical values can be sensed by a single sensor. This influence results in a variation in a sensor parameter (for example internal resistance, supply current). This is sensed in bridge circuit 12, 13, 14 and is converted into a value which is in accordance with the second physical value. <IMAGE>
Description
SPECIFICATION
A sensor for a physical value
State ofthe art
The invention originates from a sensor according to the preamble to the main claim. Such sensors are known in many forms thus, for example, sensors for sensing the speed, the angular position, the temperature of the negative pressure etc. are required for controlling a combustion engine through an ignition and/or injection computer. In so doing, the problem exists that, on the one hand, a plurality of various sensors is requires which makes the equipment complicated and expensive and on the other hand sensors for measuring a first physical value, for example speed sensors, are influenced by other physical values, for example temperature, and falsify the measured result for the first physical value. A plurality of compensating circuits is known for preventing this.
Advantages of the invention
As opposed to this, the sensor in accordance with the invention comprising the characterising features of the main claim has the advantage that the influencing of a sensor for a first physical value by a second physical value is used for the purpose of measuring the second physical value so that only a single sensor for measuring two different physical values is required. In most practical circumstances, this second physical value is temperature or pressure.
Advantageous further developments and improvements of the sensor set forth in the main claim are made possible by the measures set forth in the sub-claims. It is of particular advantage, for example with a piezo resistive pressure sensor, to evaluate, with an inductive sensor or with a field plate sensor, the variation in the internal resistance resulting from a temperature influence or, with a Hall sensor to measure according to the variation in the supply current. Thus, the physical value of temperature can be determined in a simple manner at the same time.
This also applies for example to the physical value of pressure through which the corresponding sensor parameters of particular types of sensor are varied.
For increasing this effect, a sensitive element which can be influenced by the second physical value can be connected to the sensor in a further form of the invention, for example a temperature dependent resistor, insofar as temperature is also to be sensed as a second physical value. In this instance, the temperature influences are superimposed whereby the variations in electrical values generated by the said element - for example the output voltage of a
Hall generator - can be transmitted at the same time through the sensor output conductors for the first physical value. In this manner, a further physical value can be sensed and transmitted at the same time without any additional conductors.
Drawing
Two embodiments of the invention are illustrated in the drawing and are described in detail in the following specification. Figure 1 shows the block diagram of a first embodiment comprising an inductive sensor, Figure 2 is the block diagram of a second embodiment comprising a Hall sensor, Figure 3 is a circuit arrangement for a Hall sensor without any additional sensitive element and Figure 4 is a circuit for a Hall sensor with an additional sensitive element.
Description ofthe embodiments
In the first embodiment illustrated in Figure 1, an inductive speed or angle marker sensor 10 controls an ignition computer 11. Such a sensor 10 formed for example as a segment transmitter is known for example from German OS 2544158. Moreover, segmental sheet metal portions are caused to pass by an inductive element in accordance with the rotational speed of the crankshaft of a combustion engine, and thus vary its inductance or induce a voltage. Fundamentally, this inductive element could of course also be for example an inductive path sensor or an inductive pressure sensor.
For sensing the physical value of temperature in addition to the physical value of speed or rotary angle supplied direct to the computer 11, the inductive sensor 10 or its winding with the internal reactance Ri is connected as one branch of a bridge circuit otherwise consisting of three resistors 12 to 14 and located between a positive supply voltage terminal 15 and earth. The derived bridge voltage is transmitted to a comparator 16 the output voltage from which is transmitted to a desiredactual valuecomparator stage 17 as the actual value I of the temperature variation in the sensor 10. Moreover, the sensor 10 is connected to the desired value input
S to the desired-actual value-comparator stage 17 through a desired value function generator 18.The output from the comparator stage is transmitted through a control amplifier 19to one input to the computer 11 for sensing the temperature. Moreover, the output from the control amplifier 19 is fed back to one input to the comparator 16 through a function generator 20 for the threshold displacement.
The method of operation of the embodiment illustrated in Figure 1 is such that the inductive sensor 10 first of all delivers speed or rotary angle information direct to the ignition computer 11. For the further sensing of the physical value of temperature, the sensor 10 is connected as one branch of a bridge circuit 10,12,13,14. lfthetemperature in the sensor 10 is varied, then the derived bridge voltage is varied simultaneously and the comparator 16 provides another actual value. The temperature influence at different speeds is necessarily varied by the physical characteristic of an inductive speed sensor. To compensate for this, the desired value function generator 18 generates a desired value varying in accordance with the speed.Moreover, the desired value is varied with the function by which the temperature influence is also displaced with a changing speed. In order to compensate for the alternating current component of the sensor 10 in the bridge, the control voltage of the control amplifier 19 displaces the threshold of the comparator 16 through the function generator 20. In so doing, the bridge is controlled towards zero with respect to alternating voltage. The function generator 20 serves for matching the voltages.
In the second embodiment illustrated in Figure 2 a
Hall sensor 21 is connected to the ignition computer 11 through a terminal 22. Moreover, such a Hall sensor, which is for sensing speed or rotary angle, is known for example from German OS 2842386.
Since such a Hall sensor does not generate a continuously varying output signal, but simply jumps between two voltage values in accordance with the passage of a segment or a marker, a substantially more simple evaluating circuit for the determination of temperature can be used. Moreover, the Hall sensor 21 is connected through a terminal 23 to the resistors 12 to 14 which together form a bridge circuit. The bridge voltage is transmitted to a differential amplifier 24 the output from which is transmitted through an intermediate store 25 to the temperature measuring input to the computer 11. The setting input to the store 25 is connected to the terminal 22.
The internal construction of an integrated Hall sensor is illustrated in Figure 3, as is known for example from the state of the art referred to. The supply voltage transmitted to the terminal 23 through the resistor 12 is transmitted to a Hall element 26, an amplifier stage 27 and through a resistor 28 to the collector of a power output transistor 29. In so doing, the second connection or the emitter of the transistor 29 is connected to earth.
The voltage generated in the Hall element as a result of the current flowing therethrough is transmitted through the amplifier 27 to the base of the transistor 29. The collector of the transistor 29 is connected to the output terminal 22.
The method of operation of the embodiment illustrated in Figures 2 and 3 is such that, in this instance, as a result of a temperature influence, the supply current varies which once again leads to a variation of the bridge voltage. Since the voltage generated by the Hall sensor does not vary continuously with speed but simply swings between two substantially constant levels in accordance with speed, a substantially more simple evaluating circuit is provided with respect to the first embodiment.In this case, the bridge voltage is a direct measure of the temperature deviation and is amplified in the differential amplifier 24 to a levei which can be evaluated. if required, a desired value function generator can of course be provided in this case, the desired value of which is varied, for example, with the supply voltage in order to isolate its influence from the measured values. This generator can either be connected to one or both inputs to the differential amplifier or act on its amplification factor. In so doing, the current variation or the variation of the bridge voltage need, of course, only be considered with respect to one of the two output levels of the sensor since the current through the Hall sensor is different for the two levels.In order to achieve this, the output value from the differential amplifier 24 is stored cyclically in the store 25 wherein the storage operation can be controlled automatically by one of the sensor flanks. If needs be, a delay element (not shown in detail) must still be provided so that the storage in accordance with one change of level only takes place when stationary conditions once again prevail.
As is customary, an integrated evaluating circuit is arranged on a circuit board in the Hall element 26 through which the sensor signal is processed. This takes place substantially due to the fact that the transverse voltage generated as a result of the current flowing through the Hall element 26 is amplified in an amplifier arrangement wherein the final stage transistor 29 provides the two output levels by its switching condition. Moreover, the Hall element 26 forms one branch of the bridge circuit.
The amplifier connected in parallel provides an additional temperature effect by a temperature de pendentvariation of the supply current. However, this additional effect of the amplifier need not be provided in the main.
The circuit of a Hall sensor shown in Figure 4 corresponds substantially to the circuit according to
Figure 3 but, in addition, a temperature dependent resistor 30 is connected in parallel with the switching path of the final stage transistor 29. The current supply takes place direct through the supply voltage terminal 15 and the two terminals 22, 23 are both connected to the collector of the transistor 29. Thus, the bridge resistor 12 is omitted. The resistor 28 appears in its place. Duetothetemperaturedepen- dent resistor 30, a greater temperature effect is achieved and its evaluated voltage can be transmitted to the computer 11 through the same conductors as in Figure 2.
The evaluating circuit forthe temperature effect 12 to 20 or 12 to 14,24,25 is preferably arranged on the sensor circuit board or is integrated therewith.
However, it can of course also be included in the computer 11.
If necessary, the temperature signal can also be processed with the aid of a desired or preaetermined characteristic. A function generator required for that purpose can likewise be included either on the sensor circuit board or in the computer 11.
In known manner, the temperature signal can also be admixed with further sensor signals insofar as the computer 11 requires information concerning furth er physical values.
The invention is, of course, not limited to the embodiments set forth in which are described the influence of the physical value of temperature on an inductive sensor and a Hall sensor for sensing the speed or crank-shaft angular position. This principle is quite usable in the circumstances where any sensor for sensing a physical value is influenced by a second physical value. This second physical value must necessarily influence a sensor parameter, for example the current received or the internal resistance. The evaluation of the said sensor parameter variation as a result of the influence of the second physical value automatically produces a measured value for the said second physical value.
Claims (11)
1. A sensor for a physical value wherein the sensor output value is influenced by a second physical value, characterised in that, for the additional sensing of the second physical value, an additional electronic evaluating circuit is provided for a sensor parameter which is varied in accordance with the second physical value.
2. A sensor according to claim 1 characterised in that the second physical value is temperature.
3. A sensor according to claim 2 characterised in that the varying sensor parameter is the internal resistance (for example with a piezo pressure sensor, inductive sensor, field plate sensor) or the supply current (for example with a Hall sensor).
4. A sensor according to one of the preceding claims characterised in that the evaluating circuit has a desired/actual value comparator stage for sensing the variation in the sensor parameter, the output signal from which is a measure of the second physical value.
5. A sensor according to claim 4 characterised in that the sensor forms part of a bridge circuit wherein the bridge transverse voltage is transmitted to the desired/actual value comparator stage.
6. A sensor the sensor parameter of which is also continually varied in accordance with the first physical value for sensing the second physical value, according to one of the preceding claims, characterised in that, a compensating device is provided for the influence of the first physical value on the sensor parameter.
7. A sensor, the sensor parameter of which is varied cyclically in accordance with the first physical value for sensing the second physical value, according to one of claims 1 to 5, characterised in that, a storage device is provided for the intermediate storage of the value of the sensor parameter wherein the storage value is stored within the cycle of the variation.
8. A sensor according to one of the preceding claims characterised in that a sensitive element which can be influenced by the second physical value is connected to the sensor wherein the changes in electrical values generated by the said element can be transmitted at the same time through the sensor output conductors for the first physical value.
9. A sensor according to claim 8 characterised in that the sensitive element is connected in parallel with the sensor output.
10. A sensor according to claim 8 or 9 characterised in that the sensitive element forms one branch of the bridge circuit.
11. A sensor for a physical value substantially as herein described with reference to Figure 1, Figure 2,
Figures 2 and 3 or Figures 2 and 4 of the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19803007747 DE3007747A1 (en) | 1980-02-29 | 1980-02-29 | SENSOR FOR A PHYSICAL SIZE |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB2070776A true GB2070776A (en) | 1981-09-09 |
Family
ID=6095929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8102817A Withdrawn GB2070776A (en) | 1980-02-29 | 1981-01-30 | A sensor for a physical value |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE3007747A1 (en) |
| GB (1) | GB2070776A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0158458A2 (en) * | 1984-03-28 | 1985-10-16 | Lucas Electrical Electronics & Systems Limited | Electronic ignition system for an internal combustion engine |
| WO1987003720A1 (en) * | 1985-12-12 | 1987-06-18 | Bayerische Motoren Werke Aktiengesellschaft | Process for determining operating states of a vehicle |
| WO1998008063A2 (en) * | 1996-08-23 | 1998-02-26 | Volvo Lastvagnar Ab | Sensor for measuring rotational speed and temperature |
| WO1998008711A1 (en) * | 1996-08-28 | 1998-03-05 | Itt Manufacturing Enterprises, Inc. | Arrangement for a motor vehicle regulation system |
| WO1998028172A1 (en) * | 1996-12-20 | 1998-07-02 | Robert Bosch Gmbh | System for varying and/or evaluating a rotational speed signal |
| WO2004027433A1 (en) * | 2002-09-17 | 2004-04-01 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Inductive sensor for rotational speed determination with integrated temperature measurement |
| US7652562B2 (en) | 2005-10-13 | 2010-01-26 | Hendrickson Usa, L.L.C. | Vehicle temperature warning system and method |
| WO2022108823A1 (en) * | 2020-11-20 | 2022-05-27 | Bendix Commercial Vehicle Systems Llc | Sensor temperature sensing |
Families Citing this family (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH662421A5 (en) * | 1983-07-13 | 1987-09-30 | Suisse Horlogerie Rech Lab | PIEZOELECTRIC CONTAMINATION DETECTOR. |
| DE3441938A1 (en) * | 1984-11-16 | 1986-05-22 | Preh, Industrieausrüstungen GmbH, 8740 Bad Neustadt | DEVICE FOR COMPARING VALUE PAIRS TO BE MEASURED WITH A TARGET CHARACTERISTIC |
| DE3642590A1 (en) * | 1985-12-12 | 1987-06-25 | Bayerische Motoren Werke Ag | Method for determining operating states of a motor vehicle |
| DE3714993A1 (en) * | 1987-05-06 | 1988-11-17 | Wabco Westinghouse Fahrzeug | EVALUATION FOR AN INDUCTIVE SENSOR |
| DE3736643A1 (en) * | 1987-10-29 | 1989-05-11 | Koenig Werner | Barometric altitude measurement taking into consideration the air temperature |
| DE3809886C2 (en) * | 1988-03-24 | 1997-01-16 | Teves Gmbh Alfred | Automotive sensor |
| DE3930828C3 (en) * | 1989-09-14 | 1995-04-20 | Wolfgang Dipl Ing Knappe | Method for compensating the housing temperature in the measurement signal of a pyrometer and pyrometer device |
| DE3937205A1 (en) * | 1989-11-08 | 1991-05-16 | Deutsch Franz Forsch Inst | Physical parameter e.g. pressure measuring device - with temp. measuring device at active region |
| DE4129719A1 (en) * | 1991-09-06 | 1992-03-05 | Gistl Egmont | Simultaneous oil temp. and level measuring appts. - uses single phototransistor and light emitting diode with functional changeover by optical coupler for simultaneous display |
| US5200697B1 (en) * | 1991-11-27 | 1996-06-18 | Ntn Toyo Bearing Co Ltd | Hub and bearing assembly with integrated rotation sensor including a tone ring and annular transducer |
| DE4141065A1 (en) * | 1991-12-13 | 1993-06-17 | Vdo Schindling | METHOD FOR TEMPERATURE COMPENSATION OF INDUCTIVE SENSORS |
| DE4313273C2 (en) * | 1993-04-23 | 1998-09-03 | Wabco Gmbh | Evaluation circuit for an inductive sensor |
| DE4315336B4 (en) * | 1993-05-03 | 2005-05-04 | Abb Patent Gmbh | Method and device for measuring and correcting process variables |
| DE4316067A1 (en) * | 1993-05-13 | 1994-11-24 | Dmt Gmbh | Method for measuring the temperature, the flow rate and the pressure of a fluid and device suitable for carrying out this method |
| DE4411428A1 (en) * | 1994-03-31 | 1995-10-05 | Bayerische Motoren Werke Ag | Measuring device for determining two physical parameters |
| DE4431045C2 (en) * | 1994-09-01 | 1999-08-05 | Bosch Gmbh Robert | Sensor arrangement for the joint measurement of two quantities |
| DE19504822C1 (en) * | 1995-02-14 | 1996-09-26 | Hirschmann Richard Gmbh | Device for monitoring at least two state variables of a motor vehicle |
| DE19703359A1 (en) * | 1997-01-30 | 1998-08-06 | Telefunken Microelectron | Process for temperature compensation in measuring systems |
| DE19824362A1 (en) * | 1998-05-30 | 1999-12-16 | Micronas Intermetall Gmbh | Process for monitoring the function of a sensor module and sensor module for carrying out the process |
| DE19836967C2 (en) * | 1998-08-14 | 2000-06-29 | Bosch Gmbh Robert | Procedure for checking the functionality of a container |
| DE19918821A1 (en) | 1999-04-26 | 2000-11-02 | Wabco Gmbh & Co Ohg | Evaluation method for an inductive displacement sensor, especially in the application for a vehicle clutch |
| DE19924053A1 (en) * | 1999-05-26 | 2000-09-14 | Bosch Gmbh Robert | Device for registering rotational speed and phase position at rotating components in IC engine of vehicle has sensor module that includes at least two sensors each assigned to sense angle and reference marks on rotating components |
| DE19951817A1 (en) * | 1999-10-27 | 2001-05-23 | Micronas Gmbh | Two-wire sensor arrangement |
| DE19960301C2 (en) * | 1999-12-14 | 2002-09-12 | Siemens Ag | Interference compensating circuit arrangement for a sensor |
| DE10249041B4 (en) * | 2002-10-22 | 2012-03-22 | Dr. Johannes Heidenhain Gmbh | Arrangement for temperature monitoring |
| DE102007044471A1 (en) | 2007-09-18 | 2009-04-02 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Method for sectionally determining a parameter-dependent correction value approximation course and sensor arrangement |
| DE102012219501A1 (en) * | 2012-10-25 | 2014-04-30 | BSH Bosch und Siemens Hausgeräte GmbH | Sensor arrangement for a household appliance and a household appliance with such a sensor arrangement |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3478595A (en) * | 1968-05-17 | 1969-11-18 | Gen Electric | Thermocouple pressure-sensing means |
| DE2544158C2 (en) * | 1975-10-03 | 1977-11-24 | Robert Bosch Gmbh, 7000 Stuttgart | Electrical control signal generator for triggering ignition processes in internal combustion engines |
| DE2842386A1 (en) * | 1978-09-29 | 1980-04-17 | Bosch Gmbh Robert | IGNITION DEVICE FOR INTERNAL COMBUSTION ENGINES |
-
1980
- 1980-02-29 DE DE19803007747 patent/DE3007747A1/en active Granted
-
1981
- 1981-01-30 GB GB8102817A patent/GB2070776A/en not_active Withdrawn
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0158458A3 (en) * | 1984-03-28 | 1986-12-17 | Lucas Electrical Electronics & Systems Limited | Electronic ignition system for an internal combustion engine |
| EP0158458A2 (en) * | 1984-03-28 | 1985-10-16 | Lucas Electrical Electronics & Systems Limited | Electronic ignition system for an internal combustion engine |
| WO1987003720A1 (en) * | 1985-12-12 | 1987-06-18 | Bayerische Motoren Werke Aktiengesellschaft | Process for determining operating states of a vehicle |
| EP0228636A1 (en) * | 1985-12-12 | 1987-07-15 | Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 | Method for determining the operating conditions of a motor vehicle |
| US4849894A (en) * | 1985-12-12 | 1989-07-18 | Bayerische Motoren Werke A.G. | Process for determining operating conditions of a motor vehicle from the output signals of a sensor for a relevant operating variable |
| US6106151A (en) * | 1996-08-23 | 2000-08-22 | Volvo Lastvagnar Ab | Sensor for measuring rotational speed and temperature |
| WO1998008063A2 (en) * | 1996-08-23 | 1998-02-26 | Volvo Lastvagnar Ab | Sensor for measuring rotational speed and temperature |
| WO1998008063A3 (en) * | 1996-08-23 | 1998-04-02 | Volvo Lastvagnar Ab | Sensor for measuring rotational speed and temperature |
| WO1998008711A1 (en) * | 1996-08-28 | 1998-03-05 | Itt Manufacturing Enterprises, Inc. | Arrangement for a motor vehicle regulation system |
| WO1998028172A1 (en) * | 1996-12-20 | 1998-07-02 | Robert Bosch Gmbh | System for varying and/or evaluating a rotational speed signal |
| US7099795B1 (en) | 1996-12-20 | 2006-08-29 | Robert Bosch Gmbh | System for changing and/or evaluating a speed signal |
| KR100530442B1 (en) * | 1996-12-20 | 2006-11-30 | 로베르트 보쉬 게엠베하 | System for changing and / or evaluating rotational speed signal |
| WO2004027433A1 (en) * | 2002-09-17 | 2004-04-01 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Inductive sensor for rotational speed determination with integrated temperature measurement |
| US7652562B2 (en) | 2005-10-13 | 2010-01-26 | Hendrickson Usa, L.L.C. | Vehicle temperature warning system and method |
| WO2022108823A1 (en) * | 2020-11-20 | 2022-05-27 | Bendix Commercial Vehicle Systems Llc | Sensor temperature sensing |
| US11624754B2 (en) | 2020-11-20 | 2023-04-11 | Bendix Commercial Vehicle Systems Llc | Sensor temperature sensing |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3007747A1 (en) | 1981-09-24 |
| DE3007747C2 (en) | 1990-05-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |