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Road roughness detecting method

A detection method and roughness technology, which is applied in the field of road roughness measurement, can solve the problems of cumbersome and complicated operation, failure to detect the high-frequency dynamic response of the car body, etc., and achieve the effect of strong function and convenient use

Inactive Publication Date: 2002-12-11
陆键
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Problems solved by technology

When the mechanical characteristics change, the detection output will change accordingly, but its fundamental limitation is that the mechanical detection cannot detect the high-frequency dynamic response of the car body, that is, it cannot fully retain the high-frequency information of the road roughness
At the same time, the instrument is more difficult and complicated in terms of installation and carrying, and the operation and use are more cumbersome, and when installing, the car needs to be mechanically modified

Method used

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Embodiment Construction

[0017] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0018] The invention is composed of a vertical acceleration sensor 1, a serial or parallel analog / digital converter 2, a box body 3, a signal output cable 4 and a computer 5. The acceleration sensor 1 and the serial or parallel A / D converter 2 are fixed in the detection box to form a detection box. The digital signal output by the detection box is sent to the 232 serial interface or the LP1 parallel interface of the notebook computer through the signal output cable 4 . The self-weight of the detection box is about 7 kg, and the bottom plate of the box is flat. When the box is placed on the right side stepping plane of the front row of the testing vehicle, due to the weight of the box, the testing box is always close to the stepping plane no matter what driving conditions it is in. At the same time, the vertical acceleration sensor 1 is fastened on the botto...

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Abstract

The present invention is road roughness detecting method by vehicular vertical acceleration sensor. The vertical acceleration signal is converted into output various roughness signal to complete the measurement of ground roughness. The signal output terminal of the vertical acceleration sensor is connected to the signal input terminal of serial or parallel A / D converter and the output terminal ofthe serial or parallel A / D converter is connected to computer. Inside the detectoin box, the vertical acceleration sensor and the serial or parallel A / D converter are installed on the same base boardand fixed in the same sealed dead weight calibrating box. The measurement method can obtain the vertical acceleration of the vehicle and the high frequency and low frequency ground roughness.

Description

1. Technical field: [0001] The invention is a method for measuring road roughness, in particular a method for detecting road roughness with a responsive method. 2. Background technology: [0002] Because road roughness directly affects the safety of vehicles, aircraft and other vehicles, as well as the comfort of passengers, it has always been an important index in road quality evaluation and road construction. The detection of road roughness is mainly divided into two categories. The first type is a direct detection system, which uses sensor technology to directly measure the profile of the pavement profile, and then converts the measured profile curve of the pavement profile into various roughness indicators by road roughness evaluation technology and theory . This type of detector is mainly used for the acceptance of road roughness after new construction and the calibration of other roughness meters. Direct detection generally cannot be used for detection under high-sp...

Claims

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Application Information

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IPC IPC(8): G01B7/34
Inventor 陆键
Owner 陆键
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