LOADING WEIGHT DETECTION DEVICE

• US 20160265960A1
• Filed: 10/22/2014
• Published: 09/15/2016
• Est. Priority Date: 10/23/2013
• Status: Active Grant

• Current Assignee: Tokyo University of Marine Science and Technology
• Original Assignee: Tokyo University of Marine Science and Technology
• Inventors: WATANABE, Yutaka
• Granted Patent: US 10,132,674 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G01G 19/022 for weighing wheeled or rolling bodies in motion G01G19/045 takes precedence
• CPC Class Codes: G01G 19/08 for incorporation in vehicles
• CPC Class Codes: G01G 19/086 wherein the vehicle mass is dynamically estimated
• CPC Class Codes: G01G 3/16 measuring variations of frequency of oscillations of the body

Abstract

A loading weight detection device applicable to various mobile bodies can accurately detect loading weight with minimized number of input variables. It includes a touch panel 33 receiving input of vehicle body weight m_a and initial setting cargo weight m_b0; an oscillation detection part 20 detecting cargo vehicle oscillation; an arithmetic part 31 functioning as natural vibration identifying means for identifying natural vibration in self-weight direction as vertical oscillation center-of-gravity-specific natural vibration value, based on oscillation data detected by an oscillation detection part 20; a storage part 32 storing vertical oscillation center-of-gravity-specific natural vibration value identified by an arithmetic part 31 with cargo having initial setting cargo weight of m_b0 loaded on cargo vehicle, vehicle body weight m_a, and initial setting cargo weight m_b0 as initial setting data, arithmetic part 31 calculating total weight M, being based on vertical oscillation center-of-gravity-specific natural vibration value identified and initial setting data.

Claims

1. A loading weight detection device that detects the cargo weight of a cargo that is loaded on a mobile body, comprising:

an initial setting input means for receiving an input of a vehicle body weight of said mobile body, a breadth between virtual springs in said mobile body, and an initial setting cargo weight of said cargo;

an oscillation detection means for detecting an oscillation of said mobile body;

a natural vibration identifying means for identifying, on the basis of oscillation data that has been detected by the oscillation detection means, identifying the natural vibration in a self-weight direction of said mobile body as a vertical oscillation center-of-gravity-specific natural vibration value, and identifying the natural vibration around a vehicle axis of said mobile body as a horizontal oscillation center-of-gravity-specific natural vibration value;

a storage means for storing said vertical oscillation center-of-gravity-specific natural vibration value and said horizontal oscillation center-of-gravity-specific natural vibration value that have been identified by said natural vibration identifying means with said cargo having said initial setting cargo weight being loaded on said mobile body, and said vehicle body weight, said breadth between the virtual springs, and said initial setting cargo weight that have been received by said initial setting input means as initial setting data; and

a total weight calculation means for calculating a total weight of said mobile body that is loaded with said cargo on the basis of said vertical oscillation center-of-gravity-specific natural vibration value and said horizontal oscillation center-of-gravity-specific natural vibration value that have been identified by said natural vibration identifying means and said initial setting data.

2. The loading weight detection device according to claim 1, wherein said natural vibration identifying means applies fast Fourier transformation to time series oscillation data that has been detected by said oscillation detection means to identify said vertical oscillation center-of-gravity-specific natural vibration value and said horizontal oscillation center-of-gravity-specific natural vibration value.

3. The loading weight detection device according to claim 1, wherein said vertical oscillation center-of-gravity-specific natural vibration value and said horizontal oscillation center-of-gravity-specific natural vibration value that are identified by said natural vibration identifying means are natural vibration frequencies.

4. The loading weight detection device according to claim 1, wherein said total weight calculation means calculates a total weight of said mobile body in consideration of the height in the vertical direction from the oscillation center axis to the center-of-gravity location of said mobile body, the displacement in the horizontal direction from the oscillation center axis to the center-of-gravity location of said mobile body, and the static inclination angle of a cargo bed in said mobile body.

5. A loading weight detection device that detects the cargo weight of a cargo that is loaded on a mobile body, comprising:

an initial setting input means for receiving an input of a vehicle body weight of said mobile body and an initial setting cargo weight of said cargo;

an oscillation detection means for detecting an oscillation of said mobile body;

a natural vibration identifying means for identifying, on the basis of oscillation data that has been detected by the oscillation detection means, identifying the natural vibration in a self-weight direction of said mobile body as a vertical oscillation center-of-gravity-specific natural vibration value;

a storage means for storing said vertical oscillation center-of-gravity-specific natural vibration value and said horizontal oscillation center-of-gravity-specific natural vibration value that have been identified by said natural vibration identifying means with said cargo having said initial setting cargo weight being loaded on said mobile body, and said vehicle body weight and said initial setting cargo weight that have been received by said initial setting input means as initial setting data; and

a total weight calculation means for calculating a total weight of said mobile body that is loaded with said cargo on the basis of said vertical oscillation center-of-gravity-specific natural vibration value that has been identified by said natural vibration identifying means and said initial setting data.

7. The loading weight detection device according to claim 5, wherein said natural vibration identifying means applies fast Fourier transformation to time series oscillation data that has been detected by said oscillation detection means to identify said vertical oscillation center-of-gravity-specific natural vibration value.

8. The loading weight detection device according to claim 5, wherein said vertical oscillation center-of-gravity-specific natural vibration value that is identified by said natural vibration identifying means is a natural vibration frequency.

6. A loading weight detection device that detects the cargo weight of a cargo that is loaded on a mobile body, comprising:

an initial setting input means for receiving an input of first and second initial setting cargo weights of said cargo, respectively;

an oscillation detection means for detecting an oscillation of said mobile body;

a natural vibration identifying means for identifying, on the basis of oscillation data that has been detected by the oscillation detection means, identifying the natural vibration in a self-weight direction of said mobile body as a vertical oscillation center-of-gravity-specific natural vibration value;

a vehicle body weight calculation means for calculating a vehicle body weight of said mobile body on the basis of said first and second initial setting cargo weights that have been received by said initial setting input means, a first vertical oscillation center-of-gravity-specific natural vibration value that has been identified by said natural vibration identifying means with said cargo having said first initial setting cargo weight being loaded on said mobile body, and a second vertical oscillation center-of-gravity-specific natural vibration value that has been identified by said natural vibration identifying means with said cargo having said second initial setting cargo weight being loaded on said mobile body;

a storage means for storing said vehicle body weight that has been calculated by the vehicle body weight calculation means, said first initial setting cargo weight that has been received by said initial setting input means, and said first vertical oscillation center-of-gravity-specific natural vibration value that has been identified by said natural vibration identifying means with said cargo having said first initial setting cargo weight being loaded on said mobile body as initial setting data; and

a total weight calculation means for calculating a total weight of said mobile body that is loaded with said cargo on the basis of said vertical oscillation center-of-gravity-specific natural vibration value that has been identified by said natural vibration identifying means and said initial setting data.

9. The loading weight detection device according to claim 6, wherein said natural vibration identifying means applies fast Fourier transformation to time series oscillation data that has been detected by said oscillation detection means to identify said vertical oscillation center-of-gravity-specific natural vibration value.

10. The loading weight detection device according to claim 6, wherein said vertical oscillation center-of-gravity-specific natural vibration value that is identified by said natural vibration identifying means is a natural vibration frequency.