WO2003098155A1

WO2003098155A1 - Monitoring device

Info

Publication number: WO2003098155A1
Application number: PCT/EP2003/005168
Authority: WO
Inventors: Peter Apel; Klaus Wilczek
Original assignee: Ab Elektronik Gmbh
Priority date: 2002-05-17
Filing date: 2003-05-16
Publication date: 2003-11-27
Also published as: AU2003232787A1; DE10222634B4; DE10222634A1; DE20304626U1

Abstract

The aim of the invention is to improve a prior art monitoring device so that it undertakes its monitoring function in a more precise and reliable manner. To this end, at least one pin-adjusted rotation angle sensor (21, 22) with two ASIC elements (3.1, 3.2) is used. According to the rotational motion of a shaft (23), said rotation angle sensor supplies two discharge voltages for generating two opposite output voltages for detecting error conditions in the vicinity of the rotation angle sensor (21, 22). To this end, one ASIC element (3.1) is connected to the positive pole of the supply voltage and the other ASIC element (3.2) is connected to the negative pole of the supply voltage. In addition, both discharge voltages are straightened and sloped by a rough and fine adjusting level thereby supplying both opposite output voltages.

Description

monitoring device

The invention relates to the use of a pin-adjusted angle of rotation sensor with two ASIC circuit elements, each having a Hall element, which emit two output voltages as a function of the rotational movement of a shaft to generate two output voltages for detecting error states in the area of the angle of rotation sensor ,

The invention also relates to a device for monitoring at least one operating parameter of a functional element of a vehicle, in particular an accelerator pedal and / or a throttle valve, with at least one monitoring unit which emits opposing output voltages.

A rotation angle sensor is known from WO 95 14 911 AI. It consists of a stationary and a rotating format. The stationary formation contains two crescent-shaped stator elements, between which there is a spacing recess in which a Hall element is arranged. The rotating formation has an annular magnetic element which is held by a holding unit and can be moved around the stator elements while leaving an air gap. Such rotation angle sensors are also known from WO 98 25 102 AI, DE 197 16 985 AI, DE 199 03 940 AI and EP 1 024 267 A2 from the applicant.

With the aid of the Hall element, output voltages are generated in the known rotation angle sensors which correspond to the position of the rotating formation.

From WO 98 22 781 AI it is known to adjust the output voltages generated. The adjustment is carried out as follows: a) Adjustment data are temporarily stored in a temporary memory via an output pen via a change unit, with which a work unit outputs changed output values or curves at the output pin via an output device. b) When the initial values or curves have reached their adjustment position, the adjustment data are written into a permanent memory by the change unit.

However, only the output voltage is straightened during adjustment and the existing gradient is raised somewhat.

A monitoring device is known from DE 40 04 085 AI, one path of which is connected to the positive and the other path of which is connected to the negative pole of the supply voltage. The rotating part of the double potentiometer is connected to the shaft of a throttle valve. When the throttle valve shaft rotates, two position signals are generated that change in opposite directions. Both position signals are fed to an evaluation unit, with the help of which short or Shunts and the like can be detected. It is disadvantageous that potentiometers are used as detection units, which are imprecise and prone to failure. In addition, the resistance values can change due to the conditions prevailing in the engine compartment, which leads to errors and inaccuracies in the monitoring device itself.

The task therefore arises to further develop the known monitoring device in such a way that it performs its monitoring function more precisely and more reliably.

According to the invention, this object is achieved by the use steps of claim 1 or 2.

The advantages achieved by the invention are that a monitoring device is made available which is precise and less susceptible to faults. In addition, the characteristic curves can be crossed in such a way that the evaluations are also possible precisely and precisely in the crossing area due to higher voltage differences. The object is also achieved by the use steps of claim 3 or 4.

The advantages achieved in this way are, in particular, that the two characteristic curves are crossed by the pin adjustment. This gives the possibility that conventional rotation angle sensors can be used.

The possibility of using the pin adjustment to generate the crossed characteristic curves can also be supplemented by rotating the ASICs in the air gap in such a way that the magnetic flux flows through them at an offset of 180 ° and thus produces Hall currents with a corresponding offset. which ultimately produces the crossed characteristic curves immediately, so that the already crossed characteristic lines only have to be straightened or otherwise adjusted by the pin adjustment in their linearity and linearity.

The output voltages of the rotation angle sensors can be inclined and straightened by coarse and fine adjustment levels so that two systems of opposing output voltages are output. The presence of two independently working systems increases the security of the monitoring device by twice. If an ASIC circuit fails completely, it is not the complete one

Failure of the monitoring device connected. Rather, the second system can now be used completely. In order to increase the security of the monitoring system, both systems can run side by side and both can take over the monitoring in parallel. This completes the accuracy and security of the surveillance system.

The outputs of the ASIC circuit elements can be connected to a monitoring unit, which evaluates the crossed opposite output voltages generated for the function test. The monitoring unit can be designed as a microprocessor unit.

However, it is also possible for the monitoring tasks of the microprocessor unit to be carried out by at least one of the microprocessor units integrated in the ASIC circuit elements. This reduces the effort.

The monitoring itself can be carried out as follows: a) Checking the size of the output voltages individually for a permissible range of values for detecting individual errors, b) checking the difference in the magnitude of the output voltages with a predetermined limit value for detecting fault conditions in the region of at least one angle of rotation sensor, and c) taking emergency operation measures in the event of a fault.

It is also possible to deviate from the specified sequence or to add and change it in accordance with the respective operating conditions.

The emergency running measures themselves can then take place depending on the output voltage that is not faulty or the smaller amount.

The object is also achieved in a device for monitoring at least one operating parameter by the features of claim 13.

The advantages achieved in this way are, in particular, that the conventional rotation angle sensors can be used, the Hall elements already positioned in the spacing recess, which are part of the ASIC circuit elements, only need to be rotated accordingly. Then, with the aid of the pin adjustment device, the corresponding inclination or the linearity of the output voltages can be further cross-straightened or perfected.

Because the ASIC circuit elements are connected to a voltage source, plausibility monitoring criteria are possible; voltage drops in the supply voltage can be detected very quickly and the appropriate measures can be initiated. The fact that the two lines at the crossing point are very steep and the steepness is retained even in the event of a voltage drop is also a generation of plausibility signals in the intersection of the two characteristics.

Further perfections of the monitoring devices are specified in the further subclaims.

The invention is explained below with reference to the drawings. Show it:

La a rotation angle sensor in an exploded, perspective, schematic representation,

Lb, lc different installation variants of ASICs in a spacing recess of a stator unit of a rotation angle sensor according to FIG. La,

2 is a block diagram of a pin adjustment device for a rotation angle sensor according to FIG. 1,

3 shows a signal conversion unit of a pin adjustment device according to FIG. 2,

4 shows a further embodiment of a delivery device of a pin adjustment device according to FIG. 2,

5 shows a working unit of a pin adjustment device according to FIG. 2 in a schematic block diagram representation,

6 shows a first embodiment of a monitoring device in a schematic block diagram, 7a, 7b, the output voltages output by the rotation angle sensor according to FIG. 6,

8a, 8b the crossed characteristic curves generated by the monitoring device according to FIG. 6,

9 shows a second embodiment of a monitoring device in a schematic block diagram,

10 shows the output voltages and output from the two rotation angle sensors

11 shows the monitoring device according to FIG.

9 generated crossed characteristic curves.

A rotation angle sensor with a magnet segment 4 is shown in FIG.

The rotation angle sensor consists of - a rotor unit,

- a stator unit and

- A housing unit 1.7, which at least partially surrounds the rotor unit and the stator unit.

The rotor unit comprises the magnet segment 4, which is held by a magnet receiving unit 5. The magnetic receiving unit 5 is designed as a rotary cylinder element with a recess. The magnet segment 4 is arranged on the periphery of the magnet receiving unit 5. The magnet receiving unit 5 with the magnet segment 4 are held by a rotation cylinder element of a rotation element 17. The receiving unit 5 and the magnet segment 4 are in a cylinder jacket of the plastic molded rotary As shown in FIGS. 1b and 1c, the stator unit has a stator element 6 which consists of two stator sub-elements which leave a recess 14 between them. Two ASIC circuit elements 3.1, 3.2, each with a Hall element 18.1, 18.2, are arranged in the recess of the stator element 6, which is essentially horseshoe-shaped. The two ASIC circuit elements 3.1, 3.2 are connected to a circuit board element 2 (cf. FIG. La).

The stator sub-elements are preferably constructed in the form of sheet metal packages. Each laminated core consists of laminated sheets, each specially treated, so-called texture sheets, as described in DE 94 08 516 Ul, the disclosure of which is referred to with regard to the texture sheets, the connection of these sheets and the stator sub-elements produced from them ,

The rotor and stator units described are arranged in a sensor housing 7 of the housing unit. The sensor housing 7 also receives the plug unit 16, which is connected to the circuit board element 2. To fasten the sensor housing 2, it has two fastening bushings 8.

If the described active units are mounted inside the sensor housing 7, this is closed with the aid of a cover element 1.

Conventional mounting is provided for mounting a shaft element 13 which is connected to a lever in which a bushing is arranged.

The main elements of this storage are:

- A bearing bush 9, which essentially looks like a thread spool, and - A radial shaft sealing ring 12 which is designed as a hollow cylinder.

These parts of the bearing are inserted into the sensor housing 7 as follows: A locking ring 11 is placed in a recess in the shaft element 13 and a shim is pushed in front of it. Thereafter, the bearing bush 9 is pushed over the shaft element 13 and this unit with the bearing bush 9 first into the bearing opening of the sensor housing 7 so that the shaft element 13 is received by the rotary element 17. Then the cover element 1 is placed on the sensor housing 7 and the housing is closed.

2 shows a block diagram of a pin adjustment device 51. It consists of a series connection:

a change unit 52

a permanent memory 53,

- A work unit 54 and

a dispenser 56.

A temporary memory 55, which is connected to the change unit 52 and the work unit 54, is arranged parallel to the permanent memory 53. The change unit 52 is also connected directly to the work unit 52. The working unit 54 bears against the Hall element 18.1, 18.2.

The output device 56 consists of a series connection

- A signal conversion unit 57 and

an output unit 58. A connector strip 51 is arranged on the change unit 52 and has at least one output pin VCC, one ground pin E and one output pin OUT. The output pin OUT is connected to the output unit 58. The change unit 52 is a digital arithmetic unit or a plug-in computer with a central processor unit, in which an adjustment and work program is written.

3, the signal conversion unit 57 consists of a series connection of a digital-to-analog converter 571 and an amplifier 572.

Another embodiment of the signal conversion unit 57 is shown in FIG. 4. It consists of a series connection of an optocoupler 573, a reference voltage element 574 and a comparator 575.

A block diagram is shown in FIG. 5, which shows in particular the working unit 54. The change unit 52, the permanent memory 53 and the temporary memory 55 lie opposite it. The further connection to the output device 56 is identified by an arrow.

A voltage source 547 with a temperature compensation is arranged in front of the Hall element 18.1 or 18.2. The temperature compensation ensures that at different outside temperatures an output voltage compensating the temperature coefficient of the Hall element is emitted by the voltage source. This is particularly important since the angle of rotation sensor is exposed to large temperature fluctuations when used in a vehicle.

The following parts are arranged in series opposite the voltage source with temperature compensation 547: - a preamplifier 541.1

an offset amplifier 541.2, which is connected to an offset digital / analog converter,

a switching capacitor stage 542, a sample & hold unit 543,

an amplifier 544.1 which is connected to a gain bit digital-to-analog converter 544.3,

- A characteristic limiter 544.2 and

an output stage 545.

The switching capacitor stage 542 is used for automatic compensation of the offset of the Hall element 18.

The sample and hold unit 543 takes on the task of temporarily storing the voltage values during the generation of the subsequent value.

The work unit 54 includes a clock generator (clock unit) 546, which is connected to the Hall element 18.1 or 18.2, the preamplifier, the switching capacitor stage 542 and the sample and hold unit 543.

The change unit of the permanent memory 53 and the temporary memory 55 are connected to a bus system BUS. As is known per se, the bus system BUS can have a data, an address and a control bus. In the present case, it is a pure data bus.

A rough adjustment level GSC branches off from the bus system BUS and leads to the preamplifier 541.1. Next to it is a branch of coarse bits offset bits, which leads to the offset digital / analog converter 541.3. In addition, a branch from the fine adjustment level FGD leads from the bus system BUS to the Gainbit digital Analog converter 544.3. Next to it is a branch of fine bit fin bits, which leads to the characteristic limiter 544.2.

The coarse adjustment level GSC with the coarse bits offset bits is a coarse adjustment setting. The adjacent fine adjustment level FGB with the characteristic limit fine bits fin bits, on the other hand, represents a fine adjustment setting.

The bus system BUS can also have a junction temperature coefficient bits TCB, with which the temperature gradient of the voltage source 547 can be controlled by the change unit 52.

The parts described are summarized in the ASIC circuit elements 3.1 and 3.2 of the respective rotation angle sensor 21.

6 shows a first embodiment of a monitoring device. Here, a rotation angle sensor 21 with two ASIC circuit elements 3.1, 3.2 is connected to a shaft 23. The shaft 23 belongs either to an accelerator pedal 24 or to a throttle valve 25.

As shown in FIG. 6, the outputs of the two ASIC circuit elements 3.1, 3.2 are connected to a monitoring unit 30. The monitoring unit 30 has two anolog / digital converters 31, 32 arranged next to one another. A digital / analog converter 35 is also provided. The monitoring unit 30 has a microprocessor unit.

When the shaft 23 rotates, the rotor unit rotates, and at the output of the two ASIC circuit elements 3.1 and 3.2, which are positioned in the usual arrangement in the spacing recess 14 according to FIG. 1b, the positions shown in FIG. output voltages U3.1-21 and U3.2-21. The two output voltages are approximately parallel to each other and are directed in the same direction.

In order to adjust the two output voltages, adjustment data are entered into the temporary memory 55 via the output pin OUT and the change unit 52. First the rough setting with the adjustment level GSC between 2 and 4 bits and the rough bits offset bits between 8 and 15 bits and then the fine adjustment with the fine adjustment level FGP between 7 and 14 bits. Here, the slope of the output voltage U3.1-21 and its linearity are first set, so that the output voltage U1 is output.

The output voltage U3.2-21 is then changed in an analogous manner with respect to the slope and linearity, so that the output voltage U2 is regenerated. Overall, the two crossed characteristic curves U1 and U2 thus arise, as shown in FIG. 8a. Once the corresponding values have been determined, they are written into the temporary memory 55 using the change unit 52. If the protocol evaluation of the adjustment reveals that the two crossed output voltages U1, U2 correspond to the desired standard characteristic curves, their adjustment data from the temporary memory 55 are written into the permanent memory 53 by the change unit 52. The permanent memory 53 is designed as a ROM memory, as a PROM memory or as an E ² PROM memory. The temporary memory 55, on the other hand, is a conventional RAM memory or a similarly designed read / write memory. There is another simple variant to generate the crossed output voltages:

As shown in FIG. 1c, the two Hall elements 18.1, 18.2 of the two ASIC circuit elements 3.1, 3.2 are arranged offset by 180 ° to one another for this purpose. Both ASIC circuit elements 3.1, 3.2 are arranged on a common voltage source.

The two Hall elements 18.1, 18.2 are magneto-electrical semiconductor components, the functioning of which is based on the Hall effect. With the Hall effect, the current strength changes as a result of the Lorentz force on a current-carrying disk made of the semiconductor when a magnetic field acts transversely to the direction of the current. As a result of the magnetic flux density acting perpendicular to the current direction, the Lorentz force causes the charge carriers carrying the current to move, so that they are separated. This creates a Hall voltage perpendicular to the current.

When the shaft 23 is rotated, the rotor unit in the stator unit rotates and a generated magnetic field flows through both Hall elements. Currents offset by 180 ° flow in the Hall element 18.1 and in the Hall element 18.2. As a result of the flux density acting in the same direction, two output voltages U 3.1, U ^Λ 3.2 are output which are already opposite to one another (see FIG. 7b). Both output voltages can then, as already described, be readjusted with regard to linearity and slope such that the crossed characteristic curves U1, U2 are generated, as shown in FIG. 8b. A comparison of the crossed characteristic curves according to FIGS. 8a and 8b shows that characteristic curves with the same gradient behavior can be regenerated. The opposing output voltages U1, U2 according to FIGS. 7b and 8b, the counter currents due to the Hall currents flowing through 180 ° and / or the adjustment. Have a course are fed to a monitoring unit 30. Here, they are converted accordingly by the A / D converters 31, 32 and processed according to the following rhythm: a) checking the sizes of the output voltages individually for a permissible value range for the detection of individual errors; b) checking the difference between the sizes of the output voltages using a predetermined limit value for detecting fault states in the region of at least one angle of rotation sensor; and c) taking emergency measures in the event of a fault.

The emergency operation measures are carried out depending on the faulty output voltage or the smaller amount.

Control functions of an ignition, a throttle valve or a unit are carried out with the two crossed characteristic curves U1, U2. The crossed characteristic curves are activated by actuating the respective parts, i.e. H. generated by actuating the shaft 23.

A further monitoring device is shown in FIG. It consists of two pin-adjusted rotation angle sensors 21, 22, which are actuated by the shaft 23, which belongs to an accelerator pedal 24 or to a throttle valve 25.

Usually, both pin-adjusted rotation angle sensors output the output voltages U3.1-21, U3.2-21 or U3.1-22, U3.2-22. The four characteristic curves (see FIG. 10) usually run essentially parallel when the ASIC circuit Elements 3.1, 3.2 with their Hall elements 18.1, 18.2, as shown in FIG. 1b, are arranged in the spacing recess 14.

The crossed output voltages Ul and U2 or Ul ^Λ and U2 ^{Λ are} generated by the adjustment. They both cross at the same crossing point. For the sake of drawing, they are drawn next to one another in FIG. 11.

If the two ASIC circuit elements 3.1, 3.2 are installed in the rotation angle sensor 21 or 22, as shown in FIG. 1c, each sensor already produces, as described above, crossed output voltages U3.1-21, U3.2-21, and U3.1-22, U3.2-22, which are then readjusted accordingly.

However, it is also possible to install the two ASIC circuit elements 3.1, 3.2 in the angle of rotation sensor 21 in such a way that they are rectified and, in contrast, in the angle of rotation sensor 22 the two ASIC circuit elements 3.1, 3.2 are inserted rotated by 180 °, so that the two output voltages of both sensors 21, 22 intersect. The desired crossed characteristic curves U1, U2 can then be generated from the corresponding output voltages.

Here too, the connected monitoring unit 30 monitors according to the following algorithm: a) checking the sizes of the output voltages individually for a permissible value range for detecting individual errors; b) checking the difference between the quantities of the output voltages using a predetermined limit value for detecting fault states in the region of at least one angle of rotation sensor; and c) taking emergency measures in the event of a fault. The output voltages are also supplied to A / D converters 31, 32 and 33, 34, respectively. The notification signal S is output by the D / A converter 35.

The particular advantage of the monitoring device 30 according to FIG. 9 is that two systems of crossed voltages are delivered independently of one another. This increases the monitoring quality considerably. It is also possible to use one system to monitor one fault and the other crossed voltage system to monitor another fault. Since the output voltages are emitted by the same pin-adjusted rotation angle sensors 21, 22, the monitoring carried out can be reproduced at any time.

Claims

Patent claims:

1. Use of a pin-adjusted rotation angle sensor (21, 22) with two ASIC circuit elements (3.1, 3.2), each of which has a Hall element (18.1, 18.2), which depends on the rotational movement of a shaft (23). emit two output voltages (U3.1, U3.2) to generate two output voltages (Ul, U2) for detecting error states in the area of the rotation angle sensor (21, 22), characterized in that

- that the Hall elements (18.1, 18.2) of both ASIC circuit elements (3.1, 3.2) are traversed by a magnetic flux in such a way that Hall currents that are offset by 180° flow through them,

- that both output voltages (U3.1, U3.2) are straightened and tilted by coarse and fine adjustment levels (GSC, FGC) so that opposite output voltages

(Ul, U2).

2. Use of a pin-adjusted rotation angle sensor (21, 22) with two ASIC circuit elements (3.1, 3.2), each of which has a Hall element (18.1, 18.2), which depends on the rotational movement of a shaft (23). emit two output voltages (U3.1, U3.2) to generate two output voltages (Ul, U2) for detecting error states in the area of the rotation angle sensor (21, 22), characterized in that

- that a rotation angle sensor (21) with at least one Hall element (18.1, 18.2) of an ASIC circuit

Elements (3.1, 3.2) from a first Hall current and a further rotation angle sensor (22) with at least one Hall element (18.1, 18.2) of an ASIC circuit element (3.1, 3.2) is flowed through by a second second Hall current acting at 180 ° to the first, - that at least one output voltage ( U3.1-21, ...) of a rotation angle sensor (21, 22) is used and is straightened and tilted by coarse and fine adjustment levels (GSC, FGC) so that the two opposing output voltages (Ul, U2) are output.

3. Use of at least one pin-adjusted rotation angle sensor (21, 22) with two ASIC circuit elements (3.1, 3.2), each of which has a Hall element (18.1, 18.2), which depends on the rotational movement of a shaft (23 ) emit two output voltages (U3.1, U3.2) to generate two output voltages (Ul, U2) for detecting error conditions in the area of the rotation angle sensor (21, 22), characterized in that both output voltages (U3.1, U3.2) can be straightened and tilted using coarse and fine adjustment levels (GSC, FGC) so that the two opposing output voltages (Ul, U2) are output.

4. Use of a pin-adjusted rotation angle sensor (21, 22) with two ASIC circuit elements (3.1, 3.2), each of which has a Hall element (18.1, 18.2), which depends on the rotational movement of a shaft (23). emit two output voltages (U3.1, U3.2) to generate two output voltages (Ul, U2) for detecting error states in the area of the rotation angle sensor (21, 22), characterized in that - that at least one output voltage (U3.1-21, ...) of a rotation angle sensor (21, 22) is used and is straightened and tilted by coarse and fine adjustment levels (GSC, FGC) so that the two opposing output voltages are output become.

5. Use according to claim 3, characterized in that the Hall elements (18.1, 18.2) of both ASIC circuit elements (3.1, 3.2) are traversed by a magnetic flux in such a way that Hall acting through them is offset by 180 ° -Currents flow.

6. Use according to claim 4, characterized in that a rotation angle sensor (21) with at least one Hall element (18.1, 18.2) of an ASIC circuit element (3.1, 3.2) is powered by a first Hall current and a further rotation angle sensor with at least a reverb element

ASIC circuit element (3.1, 3.2) is flowed through by a second Hall current offset by 180° from 180° to the first acting second Hall current,

7. Use according to one of claims 1 to 6, characterized in that the ASIC circuit elements (3.1,

3.2) two Hall currents offset by 180° flow through it by inserting it into a spacer recess (14) offset by 180°.

8. Use according to one of claims 1 to 7, characterized in that the outputs of the ASIC circuit elements (3.1, 3.2) are connected to a monitoring unit (30) which monitors the generated crossed opposite output voltages (ül, U2. ..) for functional testing.

9. Use according to one of claims 1 to 8, characterized in that the monitoring unit (30) is a microprocessor unit.

10. Use according to one of claims 1 to 9, characterized in that the monitoring task of the microprocessor unit is taken over by at least one of the microprocessor units integrated in one of the ASIC circuit elements (3.1, 3.2).

11. Use according to one of claims 1 to 10, characterized in that the monitoring in the following

Steps: a) checking the size of the output voltages individually for a permissible value range to detect individual errors, b) checking the difference in the size of the output voltages with a predetermined limit value to detect error states in the area of at least one rotation angle sensor, and c) taking emergency running measures in Error case.

12. Use according to claim 11, characterized in that the emergency running measures take place depending on the non-faulty output voltage or the smaller amount.

13. Device for monitoring at least one operating parameter of a functional element of a vehicle, in particular an accelerator pedal and/or a throttle valve, with at least one monitoring unit which emits opposing output voltages (Ul, U2), characterized in that - that the monitoring unit is a pin-adjusted rotation angle sensor (21, 22) with at least one ASIC circuit element (3.1, 3.2), each of which has a Hall element (18.1, 18.2), and - that the Hall elements ( 18.1, 18.2) are arranged offset by 180 ° in a spacing recess (14).

14. Device according to claim 13, characterized in

- that in a first distance recess (14) there is a first pin-adjusted rotation angle sensor (21, 22) with two

ASIC circuit elements (3.1, 3.2) are arranged, each with a Hall element (18.1, 18.2), and

- That the first Hall element (18.1) is offset by 180° relative to the second Hall element (18.2).

15. Device according to claim 13, characterized in

- that at least one third ASIC circuit element (3.1, 3.2) with a Hall element (18.1, 18.2) is arranged in a second distance recess (14) of a second pin-adjusted rotation angle sensor (21), and

- that in a third spacing recess (14) of a third pin-adjusted rotation angle sensor (22) at least a fourth ASIC circuit element (3.1, 3.2) with a Hall element (18.1, 18.2) is arranged, which is opposite the third ASIC Circuit element (3.1,3.2) is arranged offset by 180 °.

16. Device according to one of claims 13 to 15, characterized in that the ASIC circuit elements (3.1, 3.2) are connected to a voltage source.