KR20180053938A - Pressure Sensor Apparatus Of Vehicle And Method Of Driving The Same - Google Patents

Abstract

The present invention relates to a pressure sensor apparatus of a vehicle and a method of driving the same, which can improve fuel efficiency of a vehicle by increasing sensing sensitivity, and further, satisfy a vehicle function safety standard. According to an embodiment of the present invention, the pressure sensor apparatus of a vehicle comprises: a plurality of sensors outputting a change in a resistance value by compression or tension of resistance; a first controller receiving an output of a first sensor of the sensors to generate first output voltage; a second controller receiving an output of a second sensor of the sensors to generate second output voltage; and a determination unit analyzing the first output voltage and the second output voltage to determine whether the sensors are normally operated or not.

Description

TECHNICAL FIELD [0001] The present invention relates to a pressure sensor device and a method of driving the same,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure sensor device for a vehicle, and more particularly, to a pressure sensor device for a vehicle and a driving method thereof, which can improve the fuel economy of the vehicle by increasing the sensing sensitivity and satisfy the automobile function safety standard.

The pressure sensor device of the related art includes one pressure sensor circuit and one controller, which has a problem that the safety of the vehicle is seriously affected when a failure or an error occurs in the pressure sensor or the controller.

In the case where two MEMS (Micro Electro Mechanical Systems) circuits are disposed on the pressure sensor, there is a problem that an accurate sensing value can not be obtained if one MEMS circuit fails. When the pressure sensor device is applied to the fuel system, there is another problem that the injection amount of the injector can not be precisely controlled due to the failure of one MEMS circuit, thereby reducing fuel consumption.

In order to prevent accidents caused by errors in the electric system installed in the automobile, the automobile functional safety standards such as ISO 26262 are prepared, and these safety standards are legislated in each country. The pressure sensor device of the prior art can not satisfy the safety standard of ISO 26262 and it is required to develop a pressure sensor device of a vehicle that can violate the safety standards such as ISO 26262 because it is violating the laws of each country.

Korean Patent Publication No. 1999-0048357 (1999. 07. 05)

An object of the present invention is to provide a pressure sensor device for a vehicle and a method of driving the same that can improve the fuel economy of a vehicle by increasing the sensing sensitivity.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a pressure sensor device for a vehicle and a method of driving the same that can satisfy automobile function safety standards.

Other features and advantages of the invention will be set forth in the description which follows, or may be obvious to those skilled in the art from the description and the claims.

In order to achieve the above object, the present invention provides a pressure sensor device for a vehicle, comprising: a plurality of sensors outputting a change in resistance value due to compression or tensile of a resistance; A second controller for receiving the output of the second one of the plurality of sensors and generating a second output voltage; and a second controller for analyzing the first output voltage and the second output voltage And a determination unit for determining normal operation or failure of the plurality of sensors.

Also, Wherein a positive output voltage (V +) of the first sensor is input to a first terminal of the first controller, a negative output voltage (V-) of the first sensor is input to a second terminal of the first controller, 1 output voltage is generated. Then, the positive output voltage (V +) of the second sensor is input to the first terminal of the second controller, and the negative output voltage (V-) of the second sensor is input to the second terminal of the second controller The second output voltage is generated.

Also, a negative output voltage (V-) of the first sensor is input to a first terminal of the first controller, and a Vcc / 2 voltage is input to a second terminal of the first controller to generate the first output voltage do. Then, the positive output voltage (V +) of the second sensor is input to the first terminal of the second controller, and the Vcc / 2 voltage is input to the second terminal of the second controller to generate the second output voltage .

Also, the determination unit determines that the first sensor is defective when the first output voltage is less than 0.5V or more than 4.5V. The determination unit determines that the second sensor is defective when the second output voltage is less than 0.5V or exceeds 4.5V.

The determination unit determines whether the sum of the first output voltage and the second output voltage is 5V when the first output voltage is 0.5V to 4.5V and the second output voltage is 4.5V to 0.5V do. If the sum of the first output voltage and the second output voltage is 5V, it is determined that the first sensor and the second sensor are normal.

The determination unit determines whether the sum of the first output voltage and the second output voltage is 5V when the first output voltage is 0.5V to 4.5V and the second output voltage is 4.5V to 0.5V do. If the sum of the first output voltage and the second output voltage is not 5V, it is determined that the first sensor and the second sensor are defective.

According to an aspect of the present invention, there is provided a method of driving a pressure sensor device for a vehicle, the method comprising: receiving a negative output voltage (V-) and a positive output voltage (V + Generating a first output voltage and a second output voltage by analyzing the first output voltage and the second output voltage and determining whether the plurality of sensors are normal or defective.

Further, the positive output voltage (V +) of the first sensor is input to the first terminal of the first controller, and the negative output voltage (V-) of the first sensor is input to the second terminal of the first controller, 1 output voltage is generated. The positive output voltage V + of the second sensor is input to the first terminal of the second controller, and the negative output voltage V- of the second sensor is input to the second terminal of the second controller, 2 Output voltage is generated.

Further, the negative output voltage V- of the first sensor is input to the first terminal of the first controller, and the Vcc / 2 voltage is input to the second terminal of the first controller to generate the first output voltage. Then, the positive output voltage (V +) of the second sensor is input to the first terminal of the second controller, and the Vcc / 2 voltage is input to the second terminal of the second controller to generate the second output voltage.

Also, And determines that the first sensor is defective when the first output voltage is less than 0.5V or exceeds 4.5V. If the second output voltage is less than 0.5V or exceeds 4.5V, the second sensor is determined to be defective.

It is further determined whether the sum of the first output voltage and the second output voltage is 5V when the first output voltage is 0.5V to 4.5V and the second output voltage is 4.5V to 0.5V. If the sum of the first output voltage and the second output voltage is 5V, it is determined that the first sensor and the second sensor are normal.

It is further determined whether the sum of the first output voltage and the second output voltage is 5V when the first output voltage is 0.5V to 4.5V and the second output voltage is 4.5V to 0.5V. If the sum of the first output voltage and the second output voltage is not 5V, it is determined that the first sensor and the second sensor are defective.

In addition, other features and advantages of the present invention may be newly understood through embodiments of the present invention.

The pressure sensor device and the driving method of the vehicle according to the embodiment of the present invention can increase the sensing sensitivity and improve the fuel efficiency of the vehicle.

The pressure sensor device and the driving method thereof according to the embodiment of the present invention can satisfy the automobile functional safety standard.

The effects obtained by the present invention are not limited to the above-mentioned effects, and other effects not mentioned can be clearly understood by those skilled in the art from the following description will be.

1 is a view showing a pressure sensor device of a vehicle according to a first embodiment of the present invention.
FIG. 2 is a view showing the first sensor and the second sensor shown in FIG. 1, and the control unit.
3 is a diagram showing an output voltage according to a pressure applied to the first sensor and the second sensor.
4 is a view showing a pressure sensor device for a vehicle according to a second embodiment of the present invention.
5 is a view showing the first sensor and the second sensor shown in FIG. 4, and the control unit.
6 is a view showing a driving method of a pressure sensor device of a vehicle according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art to which the present invention pertains. The present invention may be embodied in many different forms and is not limited to the embodiments described herein.

In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same or similar components are denoted by the same reference numerals throughout the specification.

Throughout the specification, when a part is referred to as being "connected" to another part, it includes not only "directly connected" but also "electrically connected" with another part in between . Also, when an element is referred to as "comprising ", it means that it can include other elements as well, without departing from the other elements unless specifically stated otherwise.

If any part is referred to as being "on" another part, it may be directly on the other part or may be accompanied by another part therebetween. In contrast, when a section is referred to as being "directly above" another section, no other section is involved.

The terms first, second and third, etc. are used to describe various portions, components, regions, layers and / or sections, but are not limited thereto. These terms are only used to distinguish any moiety, element, region, layer or section from another moiety, moiety, region, layer or section. Thus, a first portion, component, region, layer or section described below may be referred to as a second portion, component, region, layer or section without departing from the scope of the present invention.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms as used herein include plural forms as long as the phrases do not expressly express the opposite meaning thereto. Means that a particular feature, region, integer, step, operation, element and / or component is specified and that the presence or absence of other features, regions, integers, steps, operations, elements, and / It does not exclude addition.

Terms indicating relative space such as "below "," above ", and the like may be used to more easily describe the relationship to other portions of a portion shown in the figures. These terms are intended to include other meanings or acts of the apparatus in use, as well as intended meanings in the drawings. For example, when inverting a device in the figures, certain portions that are described as being "below" other portions are described as being "above " other portions. Thus, an exemplary term "below" includes both up and down directions. The device can be rotated by 90 degrees or rotated at different angles, and terms indicating relative space are interpreted accordingly.

Unless otherwise defined, all terms including technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Commonly used predefined terms are further interpreted as having a meaning consistent with the relevant technical literature and the present disclosure, and are not to be construed as ideal or very formal meanings unless defined otherwise.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

FIG. 1 is a view showing a pressure sensor device of a vehicle according to a first embodiment of the present invention, FIG. 2 is a view showing a first sensor and a second sensor shown in FIG. 1, and a control section.

1 and 2, a vehicle pressure sensor device 100 according to a first embodiment of the present invention includes a first sensor 110, a second sensor 120, a controller 130, and a determination unit 140 ). The controller 130 includes a first controller 130a and a second controller 130b.

The first sensor 110 includes first to fourth resistors R 1 to R 4 and first to fourth resistors R 1 to R 4 are arranged in the form of a wheatstone bridge.

The drive voltage Vcc is input to the first node n1 between the first resistor R1 and the third resistor R3 and the drive voltage Vcc is input to the second node n1 between the second resistor R2 and the fourth resistor R4 n2 are connected to the ground. A negative voltage is output from the third node n3 between the first resistor R1 and the second resistor R2 and a negative voltage is output from the fourth node R4 between the third resistor R3 and the fourth resistor R4. n4, a positive voltage (+) is output.

The positive output voltage (+) of the first sensor 110 is input to the first terminal A1 of the first controller 130a. The negative output voltage (-) of the first sensor 110 is input to the second terminal B1 of the first controller 130a.

The second sensor 120 includes first to fourth resistors R 1 to R 4 and first to fourth resistors R 1 to R 4 are arranged in the form of a wheatstone bridge.

The drive voltage Vcc is input to the first node n1 between the first resistor R1 and the third resistor R3 and the drive voltage Vcc is input to the second node n1 between the second resistor R2 and the fourth resistor R4 n2 are connected to the ground. A negative voltage is output from the third node n3 between the first resistor R1 and the second resistor R2 and a negative voltage is output from the fourth node R4 between the third resistor R3 and the fourth resistor R4. n4, a positive voltage (+) is output.

The positive output voltage (+) of the second sensor 120 is input to the first terminal A2 of the second controller 130b. The negative output voltage (-) of the second sensor 120 is input to the second terminal B2 of the second controller 130b.

3 is a diagram showing an output voltage according to a pressure applied to the first sensor and the second sensor.

Hereinafter, the configuration and operation of the first sensor 110 and the second sensor 120 will be described with reference to FIG.

The configuration of the first sensor and the operation of the first controller

Two resistances (for example, a first resistor and a second resistor) among the first to fourth resistors R1 to R4 constituting the first sensor 110 are arranged in the compression section. Then, two resistances (for example, a third resistor and a fourth resistor) among the first to fourth resistors R1 to R4 constituting the first sensor 110 are arranged in the tension section. That is, two resistors (e.g., a first resistor and a second resistor) and four remaining resistors (for example, a third resistor and a fourth resistor) lt; RTI ID = 0.0 > (negative) < / RTI > voltage.

In the above description, two resistances (for example, a first resistor and a second resistor) are arranged in the compression section among the four resistors of the first sensor 110, and two resistances (for example, However, the present invention is not limited to this, and it is possible to arrange two resistances (for example, a third resistor and a fourth resistor) in the compression section and to provide two resistances , A first resistor and a second resistor) may be disposed.

The first controller 130a receives the positive output voltage (+) and the negative output (-) of the first sensor 110 and outputs the first output voltage Vout1 to the determination unit 140.

Here, the first output voltage Vout1 of the first controller 130a can be calculated using the following equation (1).

[Equation 1]

R1 denotes the resistance value of the first resistor R1 and R2 denotes the resistance of the second resistor R2. In the equation (1), Vout1 denotes the output voltage of the first sensor 110, Quot; R3 "means a resistance value of the third resistor R3, and" R4 "means a resistance value of the fourth resistor R4.

The determination unit 140 detects a change in the resistance value due to the tension / compression of the first to fourth resistors R1 to R4 based on the input first output voltage Vout1, The total pressure applied to the first sensor 110 is measured.

The configuration of the second sensor and the operation of the second controller

Two resistances (for example, a first resistor and a second resistor) among the first to fourth resistors R1 to R4 constituting the second sensor 120 are arranged in the compression section. Two resistances (for example, a third resistor and a fourth resistor) out of the first to fourth resistors R1 to R4 constituting the second sensor 120 are arranged in the tension section. That is, two resistors (e.g., a first resistor and a second resistor) and four remaining resistors (for example, a third resistor and a fourth resistor) lt; RTI ID = 0.0 > (negative) < / RTI > voltage.

In the above description, among the four resistances of the second sensor 120, two resistances (e.g., a first resistor and a second resistor) are arranged in the compression section, and two resistances (for example, However, the present invention is not limited to this, and it is possible to arrange two resistances (for example, a third resistor and a fourth resistor) in the compression section and to provide two resistances , A first resistor and a second resistor) may be disposed.

The second controller 130b receives the positive output voltage (+) and the negative output (-) of the second sensor 120 and outputs the second output voltage Vout2 to the determination unit 140.

Here, the second output voltage Vout2 of the second controller 130b can be calculated using the following equation (2).

&Quot; (2) "

Represents the output voltage of the second sensor 120, "R1" refers to the resistance value of the first resistor R1, "R2" refers to the resistance of the second resistor R2, Quot; R3 "means a resistance value of the third resistor R3, and" R4 "means a resistance value of the fourth resistor R4.

The determination unit 140 detects a change in the resistance value due to the tension / compression of the first to fourth resistors R1 to R4 based on the input second output voltage Vout2, The total pressure applied to the second sensor 120 is measured.

The determination unit 140 determines whether the first output voltage Vout1 of the first controller 130a according to the resistance change of the first sensor 110 is within 0.5V to 4.5V. The determination unit 140 determines whether the second output voltage of the second controller 130b according to the resistance change of the second sensor 120 is within 4.5V to 0.5V.

The determination unit 140 determines whether the first output voltage Vout1 is within the range of 0.5V to 4.5V and the second output voltage Vout2 is within the range of 4.5V to 0.5V, Check whether the sum of the voltage Vout2 is 5V ((Vout1 + Vout2 = 5V).

If the sum of the first output voltage Vout1 and the second output voltage Vout2 is 5V, the determination unit 140 determines that the first sensor 110, the second sensor 120, the first controller 130a, It is determined that the controller 130b operates normally.

On the other hand, when the sum of the first output voltage Vout1 and the second output voltage Vout2 is not 5V, it is determined that the first sensor 110 and the second sensor 120 are defective. Here, the sum of the first output voltage Vout1 and the second output voltage Vout2 may not be 5V due to the failure of the first controller 130a and the second controller 130b.

Accordingly, in the present invention, when the sum of the first output voltage Vout1 and the second output voltage Vout2 is not 5V, the first sensor 110, the second sensor 120, the first controller 130a, 2 controller 130b is defective.

When the first output voltage Vout1 is less than 0.5 V or 4.5 V, that is, when the first output voltage Vout1 is less than 0.5 V or exceeds 4.5 V, It is determined that the first controller 110 or the first controller 130a is defective.

If the second output voltage Vout2 is less than 4.5V or not more than 4.5V, that is, if the second output voltage Vout2 is less than 4.5V, It is determined that the first controller 120 or the second controller 130b is defective.

The pressure sensor device 100 of the vehicle according to the first embodiment including the two sensors 110 and 120 and the two controllers 130a and 130b of the present invention can detect the pressure of the pressure sensor device The sensitivity can be doubled.

Further, the pressure can be detected even when one of the two sensors 110, 120 is faulty or defective. Therefore, the safety standard of ISO 26262 and the regulations of each country can be satisfied.

FIG. 4 is a view showing a pressure sensor device of a vehicle according to a second embodiment of the present invention, FIG. 5 is a view showing the first sensor and the second sensor shown in FIG. 4, and the control part.

A pressure sensor device 200 of a vehicle according to a second embodiment of the present invention includes a sensor unit 210, a control unit 230, and a determination unit 240. The sensor unit 210 includes a first sensor 212 and a second sensor 214. The controller 230 includes a first controller 230a and a second controller 230b.

The sensor unit 210 includes first to fourth resistors R 1 to R 4 and first to fourth resistors R 1 to R 4 are arranged in the form of a wheatstone bridge.

The drive voltage Vcc is input to the first node n1 between the first resistor R1 and the third resistor R3 and the drive voltage Vcc is input to the second node n1 between the second resistor R2 and the fourth resistor R4 n2 are connected to the ground. A negative voltage is output from the third node n3 between the first resistor R1 and the second resistor R2 and a negative voltage is output from the fourth node R4 between the third resistor R3 and the fourth resistor R4. n4, a positive voltage (+) is output.

The negative output voltage (-) of the sensor unit 210 is input to the first terminal A1 of the first controller 230a. The positive output voltage (+) of the sensor unit 210 is input to the first terminal A2 of the second controller 230b.

A voltage Vcc / 2 is input to the second terminal B1 of the first controller 230a and a voltage Vcc / 2 is input to the second terminal B2 of the second controller 230b.

The configuration of the sensor unit and the operation of the first controller and the second controller

Two resistors (for example, a first resistor and a second resistor) out of the first to fourth resistors R1 to R4 constituting the sensor unit 210 are arranged in the compression section. In the second embodiment of the present invention, the first sensor 212 is composed of the first resistor R1 and the second resistor R2.

Two resistances (for example, a third resistor and a fourth resistor) out of the first to fourth resistors R1 to R4 constituting the sensor unit 210 are arranged in the tension section. In the second embodiment of the present invention, the second sensor 214 is constituted by the third resistor R3 and the fourth resistor R4.

That is, the first sensor 212 is formed of two resistors (for example, a first resistor and a second resistor) among the four resistors, and the second sensor 212 is formed of the remaining two resistors 2 sensor 214 and the first sensor 212 and the second sensor 214 are arranged opposite to each other and are tensioned and compressed by a positive voltage and a negative voltage.

In the above description, the first sensor 212 is disposed in the compression section and the second sensor 214 is disposed in the tension section. However, the present invention is not limited to this, and the second sensor 214 may be disposed in the compression section And the first sensor 212 may be disposed in the tension zone.

The first controller 230a receives the negative output voltage V- and the Vcc / 2 voltage of the first sensor 212 and outputs the first output voltage Vout1 to the determination unit 240. [

Here, the first output voltage Vout1 of the first controller 230a can be calculated using the following equation (3).

&Quot; (3) "

In Equation (3), "Vout1" means the first output voltage Vout1 of the first controller 230a, "R1" means the resistance value of the first resistor R1, "R2" 2 means the resistance value of the resistor R2.

 The determination unit 240 detects a change in the resistance value due to tension / compression of the first resistor R1 and the second resistor R2 based on the input first output voltage Vout1, And the second resistor R2 are measured to measure the total pressure applied to the first sensor 212. [

The second controller 230b receives the positive output voltage V + and the voltage Vcc / 2 of the second sensor 214 and outputs the second output voltage Vout2 to the determination unit 240.

Here, the second output voltage Vout2 of the second controller 230b may be calculated using the following equation (4).

&Quot; (4) "

In Equation 4, "Vout2" means the second output voltage Vout2 of the second controller 230b, "R3" means the resistance value of the third resistor R3, and "R4" 4 means the resistance value of the resistor R4.

6 is a view showing a driving method of a pressure sensor device of a vehicle according to an embodiment of the present invention.

Referring to FIG. 6, the output voltage Vout1 of the first sensor is measured (S10) and the output voltage Vout2 of the second sensor is measured (S20).

Thus, the output voltage Vout1 of the first sensor can be calculated using Equation (1) or Equation (3). The output voltage Vout2 of the second sensor can be calculated using Equation (2) or Equation (4).

Then, the determination units 140 and 240 determine whether the first output voltage Vout1 is within 0.5V to 4.5V (S30). Then, the determination units 140 and 240 determine whether the second output voltage is within 4.5V to 0.5V (S40).

If it is determined in step S30 that the first output voltage Vout1 is not within 0.5V to 4.5V, that is, if the first output voltage Vout1 is less than 0.5V or exceeds 4.5V, 140, and 240 determine that the first sensor 110 or the first controller 130a is defective (S50).

If it is determined in step S40 that the second output voltage Vout2 is not within 4.5V to 0.5V, that is, if the second output voltage Vout2 is less than 0.5V or exceeds 4.5V, 140, and 240 determine that the second sensor 120 or the second controller 130b is defective (S50).

When the first output voltage Vout1 is within 0.5V to 4.5V and the second output voltage Vout2 is within 4.5V to 0.5V as a result of the determination in S40, 240 determines whether the sum of the first output voltage Vout1 and the second output voltage Vout2 is 5V (S60).

If it is determined in step S60 that the sum of the first output voltage Vout1 and the second output voltage Vout2 is not 5V, it is determined that the first sensor 110 and the second sensor 120 are defective (S70) .

Here, the sum of the first output voltage Vout1 and the second output voltage Vout2 may not be 5V due to the failure of the first controller 130a and the second controller 130b. Accordingly, in the present invention, when the sum of the first output voltage Vout1 and the second output voltage Vout2 is not 5V, the first sensor 110, the second sensor 120, the first controller 130a, 2 controller 130b is defective.

If the sum of the first output voltage Vout1 and the second output voltage Vout2 is 5V as a result of the determination in S60, the determiner 140 or 240 determines that the first sensor 110 and the second sensor 120 (S80). If the sum of the first output voltage Vout1 and the second output voltage Vout2 is 5V, the determination unit 140 or 240 determines that the first sensor, the second sensor, the first controller, and the second controller operate normally .

The method of driving a pressure sensor device of a vehicle according to an embodiment of the present invention can improve the sensitivity of pressure detection to twice as much as the pressure sensor device of the related art.

Further, the pressure can be detected even when one of the two sensors 110, 120 is faulty or defective. Therefore, the safety standard of ISO 26262 and the regulations of each country can be satisfied.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims and their equivalents. Only. It is intended that the present invention covers the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents. .

In one or more exemplary embodiments, the functions described may be implemented in hardware, software, firmware, or any combination thereof. If implemented in software, these functions may be stored or transmitted as one or more instructions or code on a computer readable medium. Computer-readable media includes both communication media and computer storage media including any medium that facilitates transfer of a computer program from one place to another. The storage medium may be any available media that is accessible by a computer. By way of example, and not limitation, such computer-readable media can comprise any computer-readable medium, such as RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, And any other medium that can be used to store and be accessed by a computer. Also, any connection is properly referred to as a computer-readable medium. For example, if the software is transmitted from a web site, server, or other remote source using a wireless technology such as coaxial cable, fiber optic cable, twisted pair cable, digital subscriber line (DSL), or infrared, radio and ultra high frequency, Wireless technologies such as fiber optic cable, twisted pair, DSL, or infrared, radio and microwave are included in the definition of media. Disks and discs as used herein include compact discs (CDs), laser discs, optical discs, digital versatile discs (DVD), floppy discs and Blu-ray discs, While discs reproduce data optically by means of a laser. Combinations of the above should also be included within the scope of computer readable media.

When embodiments are implemented as program code or code segments, the code segments may be stored as a procedure, a function, a subprogram, a program, a routine, a subroutine, a module, a software package, a class, As well as any combination thereof. A code segment may be coupled to another code segment or hardware circuit by conveying and / or receiving information, data, arguments, parameters or memory contents. Information, arguments, parameters, data, etc. may be communicated, sent, or transmitted using any suitable means including memory sharing, message passing, token passing, Additionally, in some aspects, steps and / or operations of a method or algorithm may be performed on one or more of the codes and / or instructions on a machine readable medium and / or computer readable medium that may be integrated into a computer program product As a combination or set of < / RTI >

In an implementation in software, the techniques described herein may be implemented with modules (e.g., procedures, functions, and so on) that perform the functions described herein. The software codes may be stored in memory units and executed by processors. The memory unit may be implemented within the processor and external to the processor, in which case the memory unit may be communicatively coupled to the processor by various means as is known.

In a hardware implementation, the processing units may be implemented as one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays Controllers, microcontrollers, microprocessors, other electronic units designed to perform the functions described herein, or a combination thereof.

What has been described above includes examples of one or more embodiments. It is, of course, not possible to describe all possible combinations of components or methods for purposes of describing the embodiments described, but those skilled in the art will recognize that many further combinations and permutations of various embodiments are possible. Accordingly, the described embodiments are intended to embrace all such alterations, modifications and variations that fall within the spirit and scope of the appended claims. Furthermore, to the extent that the term "comprises" is used in the detailed description or the claims, such terms are intended to be inclusive in a manner similar to "consisting" .

Furthermore, as used in this application, the terms "component," "module," "system," and the like are intended to encompass all types of computer- Entity. For example, a component may be, but is not limited to, a process running on a processor, a processor, an object, an executable execution thread, a program, and / or a computer. By way of illustration, both the application running on the computing device and the computing device can be components. One or more components may reside within a process and / or thread of execution, and the components may be centralized on one computer and / or distributed between two or more computers. These components may also be executed from various computer readable media having various data structures stored thereon. The components may be associated with a signal having one or more data packets (e.g., data from a local system, data from another component of the distributed system and / or signals from other components interacting with other systems via a network such as the Internet) Lt; RTI ID = 0.0 > and / or < / RTI > remote processes.

100, 200: pressure sensor device 110: first sensor
120: second sensor 130, 230:
130a, 230a: first controller 130b, 230b: second controller
140, 240: determination unit 210: sensor
R1: first resistor R2 second resistor
R3: third resistance R4: fourth resistance
A1: first terminal of the first controller B1: second terminal of the first controller
A2: first terminal of the second controller B2: second terminal of the second controller

Claims (12)

A plurality of sensors outputting a change in resistance value due to compression or tensile of a resistance;
A first controller receiving an output of the first sensor among the plurality of sensors and generating a first output voltage;
A second controller receiving the output of the second sensor among the plurality of sensors and generating a second output voltage; And
And a determination unit for analyzing the first output voltage and the second output voltage to determine normal operation or failure of the plurality of sensors. The method according to claim 1,
Wherein a positive output voltage (V +) of the first sensor is input to a first terminal of the first controller, a negative output voltage (V-) of the first sensor is input to a second terminal of the first controller, 1 output voltage is generated,
Wherein a positive output voltage V + of the second sensor is input to a first terminal of the second controller and a negative output voltage V- of the second sensor is input to a second terminal of the second controller, 2 A pressure sensor device for a vehicle in which an output voltage is generated. The method according to claim 1,
A negative output voltage V- of the first sensor is input to a first terminal of the first controller, a Vcc / 2 voltage is input to a second terminal of the first controller to generate the first output voltage,
Wherein a positive output voltage (V +) of the second sensor is input to a first terminal of the second controller, and a Vcc / 2 voltage is input to a second terminal of the second controller to generate the second output voltage Pressure sensor device. 3. The apparatus according to claim 2 or 3,
And determines that the first sensor is defective if the first output voltage is less than 0.5V or exceeds 4.5V,
And determines that the second sensor is defective if the second output voltage is less than 0.5V or exceeds 4.5V. 3. The apparatus according to claim 2 or 3,
The first output voltage is 0.5V to 4.5V and the second output voltage is 4.5V to 0.5V, it is determined whether the sum of the first output voltage and the second output voltage is 5V,
And determines that the first sensor and the second sensor are normal if the sum of the first output voltage and the second output voltage is 5V. 3. The apparatus according to claim 2 or 3,
The first output voltage is 0.5V to 4.5V and the second output voltage is 4.5V to 0.5V, it is determined whether the sum of the first output voltage and the second output voltage is 5V,
And determines that the first sensor and the second sensor are defective if the sum of the first output voltage and the second output voltage is not 5V. Generating a first output voltage and a second output voltage by receiving a negative output voltage (V-) and a positive output voltage (V +) output from a plurality of sensors from a plurality of controllers;
And determining a normal operation or a failure of the plurality of sensors by analyzing the first output voltage and the second output voltage by the determination unit. 8. The method of claim 7,
Wherein a positive output voltage V + of a first sensor is input to a first terminal of a first controller and a negative output voltage V- of the first sensor is input to a second terminal of the first controller, A voltage is generated,
The positive output voltage V + of the second sensor is input to the first terminal of the second controller, the negative output voltage V- of the second sensor is input to the second terminal of the second controller, A method of driving a pressure sensor device for a vehicle in which a voltage is generated. 8. The method of claim 7,
The negative output voltage V- of the first sensor is input to the first terminal of the first controller and the Vcc / 2 voltage is input to the second terminal of the first controller to generate the first output voltage,
A pressure sensor of the vehicle in which the positive output voltage V + of the second sensor is input to the first terminal of the second controller and the Vcc / 2 voltage is input to the second terminal of the second controller to generate the second output voltage, A method of driving a device. 10. The method according to claim 8 or 9,
And determines that the first sensor is defective if the first output voltage is less than 0.5V or exceeds 4.5V,
And determines that the second sensor is defective when the second output voltage is less than 0.5V or exceeds 4.5V. 10. The method according to claim 8 or 9,
The first output voltage is 0.5V to 4.5V and the second output voltage is 4.5V to 0.5V, it is determined whether the sum of the first output voltage and the second output voltage is 5V,
And determines that the first sensor and the second sensor are normal if the sum of the first output voltage and the second output voltage is 5V. 10. The method according to claim 8 or 9,
The first output voltage is 0.5V to 4.5V and the second output voltage is 4.5V to 0.5V, it is determined whether the sum of the first output voltage and the second output voltage is 5V,
And determines that the first sensor and the second sensor are defective if the sum of the first output voltage and the second output voltage is not 5V.

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