Noise and Vibration Diagnosis Device for Vehicle and Control Method Thereof

• US 20100082274A1
• Filed: 07/08/2009
• Published: 04/01/2010
• Est. Priority Date: 09/26/2008
• Status: Active Grant

• Current Assignee: Hyundai Motor Company (Hyundai Motor Group), Kia Motors Corporation (Kia Corp.)
• Original Assignee: Hyundai Motor Company (Hyundai Motor Group), Kia Motors Corporation (Kia Corp.)
• Inventors: Kim, Kyung Ho, SON, Gyo Eun
• Granted Patent: US 8,296,103 B2
• Time in Patent Office: Days
• US Class Current: 702/56
• CPC Class Codes: G01H 1/00 Measuring characteristics of vibrations in solids by using direct conduction to the detector G01H9/00, G01H11/00 take precedence

Abstract

A noise and vibration diagnosis device and control method thereof are provided for measuring noise and vibration generated in a vehicle. The device may include a measuring sensor configured to be attached at a predetermined position of a vehicle to measure noise and vibration thereof, a signal input portion to which the noise and vibration signal that is generated from the measuring sensor is inputted, and a control portion configured to receive the signal that is transferred from the signal input portion and compare it with a predetermined reference value to output a replacement signal by which it is determined whether the component on which the measuring device is attached is to be replaced or not in accordance with the comparison result. The noise and vibration causing a dissatisfaction that is expressed by a customer can be diagnosed in a short time, and an objective maintenance service is provided such that the mechanic can provide reliable service to the customer. Also, the diagnosis is performed through a standard process to reduce the maintenance time and the cost thereof, and a data base for the maintenance data can be established such that the maintenance data can be commonly used to provide uniform quality among maintenance centers through a network.

Claims

1. A noise and vibration diagnosis device for a vehicle, comprising:

a measuring sensor configured to be attached to a component at a predetermined position of a vehicle to measure noise and vibration thereof;

a signal input portion to which a noise and vibration signal that is generated from the measuring sensor is inputted; and

a control portion configured to receive the signal from the signal input portion and compare the signal with a predetermined reference value to output a replacement signal by which it is determined whether the component on which the measuring device is attached is to be replaced or not in accordance with the comparison result.

2. The noise and vibration diagnosis device for a vehicle of claim 1, further comprising:

a display portion centrally disposed on a main body;

a key input portion disposed to one side of the main body;

an LED disposed in a predetermined position to display a power on/off state or a battery charge state;

a power connector disposed at a predetermined position of one surface to receive external power;

an SD card slot disposed at a predetermined position and in which a portable memory unit is mounted;

a USB connector to receive a USB cable; and

a K-line communication port disposed at a predetermined position of an upper side to be connected to an electronic control unit (ECU) of a vehicle.

3. The noise and vibration diagnosis device of claim 2, further comprising an LED that is disposed in a predetermined position of the front side of the main body to indicate whether the measuring sensor that is connected to the measurement communication port is activated or not.

4. The noise and vibration diagnosis device of claim 2, wherein a user interface that is disposed in the main body includes a touch panel and a key input portion.

5. The noise and vibration diagnosis device of claim 2, wherein the key input portion includes a function key that consists of a power key for selecting one of power on or power off, a direction key for selecting one of an upper, a lower, a left, and a right direction, an enter key, an ESC key, and a home key.

6. The noise and vibration diagnosis device of claim 1, further comprising:

a first interface portion that communicates with an electronic device through the USB connector;

a second interface portion that communicates with an electronic control unit (ECU) that is connected to the K-line communication port;

a power portion that supplies respective load elements with the voltage of 1 2V DC that is supplied from a battery for a vehicle;

a rechargeable battery that is charged by the power that is supplied from the power portion and supplies the charged power to the load elements in a condition in which the external power is not supplied;

a signal transformation portion that transforms a CAN signal that is transmitted from the ECU of the vehicle to the signal that can be recognized in a control portion;

an ADC that transforms an analog signal that is transmitted from a signal input portion to a digital signal that can be recognized in the control portion;

a micom that resets the system or turns power on/off according to the input of the power key;

a clock generating portion that generates a clock frequency at a predetermined cycle to operate the control portion in a power-on state;

a memory portion in which an operating algorithm for the control portion, reference values that are standardized according to the measurement position of a vehicle, and measured values of noise and vibration are stored;

a glory lighting portion for lighting the display portion according to control of the control portion;

a touch recognition portion that recognizes a user selection signal of the touch panel;

an audio processing portion that emits voice signals; and

a display portion for displaying operation data regarding the noise and vibration measurement and diagnosis.

7. The noise and vibration diagnosis device of claim 6, wherein the first interface portion updates a related program, backs up the measured data, renews the reference values according to the measurement positions that are set according to a kind of vehicle, and sends out or receives the update information.

8. The noise and vibration diagnosis device of claim 6, wherein the signal input portion includes a noise sensor or a vibration sensor, and an acceleration sensor can be applied to the vibration sensor.

9. The noise and vibration diagnosis device of claim 5, wherein the audio processing portion audibly outputs procedures for measuring the noise and vibration and the measurement results thereof.

10. The noise and vibration diagnosis device of claim 6, wherein the memory portion includes a flash ROM configured to store an algorithm for the operation of the control portion, an SDRA configured to store the reference values according to the measurement positions that are predetermined corresponding to the kind of vehicle, the measurement result, and the diagnosis result, and an SD/MMC that is a portable memory unit.

11. The noise and vibration diagnosis device of claim 6, wherein the audio processing portion includes an audio codec configured to modulate a voice signal and an amp configured to amplify the modulated voice signal to a predetermined level so as to broadcast as an audible sound through a speaker.

12. A control method of a noise and vibration diagnosis device for a vehicle, comprising:

setting a condition, vehicle information, and a measurement position through a user interface;

comparing a noise and vibration value measured for a predetermined period with a reference value according to the measurement position that is predetermined corresponding to the kind of vehicle; and

performing a guidance function to replace a predetermined component, if the measured value is higher than a predetermined reference value as a comparison result.

13. The control method of claim 12, wherein the vehicle information is set in accordance with the kind of vehicle and engine exhaust amount, and the measurement position includes a seat rail, a steering wheel, an engine mount, and a front wheel bearing.

14. A control method of a noise and vibration diagnosis device for a vehicle, comprising:

setting a noise and vibration measurement condition through a user interface and measuring noise and vibration of a seat rail and a handle;

determining whether the measured noise and vibration value is higher than a reference value (A) that is predetermined at a predetermined position according to a vehicle;

determining that the vehicle is in abnormal state if the noise and vibration measurement value is in excess of the reference value (A) and determining whether the noise and vibration measurement value of the vibration induction side of an engine mount is in excess of a reference value (B);

determining whether the noise and vibration measurement value of the rotational component configured to be connected to the engine is in excess of a reference value (C) if the measurement value of the vibration induction side of the engine mount is in excess of the reference value (B); and

determining a defective component that is related to the noise and vibration and performing a guidance function to replace a predetermined component if the noise and vibration measurement value of the rotational component is in excess of the reference value (C).

15. The control method of claim 14, wherein if the noise and vibration measurement value of the rotational component does not exceed the reference value (C), it is determined that the tensile force of a belt is in an abnormal range to indicate that the belt to be replaced.

16. The control method of claim 14, wherein the rotational component includes an alternator, a power steering pump, and an air conditioner compressor.

17. The control method of claim 14, wherein if the measurement value of the vibration induction side of the engine mount does not exceed the reference value (B), the noise and vibration of the vehicle body side in the engine mount is measured, if the difference value (a) of the measurement value of the vibration induction side of the engine mount minus the measurement value of the engine mount vehicle body side exceeds a reference value (E), it is determined whether the rotational component is in a normal state or not, and if the difference value (a) does not exceed the reference value (E), it is determined that the engine mount is in an abnormal state to indicate replacement thereof.