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Weighing system capable of distinguishing vehicle type

A weighing system and vehicle type technology, which is applied in the field of weighing systems for vehicle type identification, can solve the problems of tire identifiers being unable to accurately identify vehicle types, measurement errors, and inconsistency between front and rear tires. The effect of overload and strong magnetic field signal

Inactive Publication Date: 2017-03-08
安徽恒远电子称重设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The technical solution uses tires to identify the measurement type. For trucks, the front and rear tires of this technical solution may be inconsistent, so the tire identifier cannot accurately determine the vehicle type, resulting in measurement errors.

Method used

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  • Weighing system capable of distinguishing vehicle type
  • Weighing system capable of distinguishing vehicle type
  • Weighing system capable of distinguishing vehicle type

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] A working method of a weighing system, comprising:

[0054] a. The digital weighing signal is filtered by a Caesar window low-pass filter, and the cut-off frequency is set to 10Hz;

[0055] b. Carry out sliding mean filtering on the digital weighing signal within the range of 0-10HZ after low-pass filtering, among which, set the minimum frequency and maximum amplitude of the sliding average filtering, that is, within the minimum frequency and not greater than the maximum amplitude The value of the digital weighing signal is filtered by sliding mean to obtain the weight data.

[0056] Wherein, the minimum frequency is 0.5HZ (2 seconds), and the maximum amplitude is twice the weight division value set by the weighing system.

[0057] The Caesar window low-pass filter is set with a sampling frequency of 50Hz, a cutoff frequency of 10Hz, and an order of 16, such as figure 1 shown, from figure 2 It can be seen that the filter basically does not attenuate the signal below...

Embodiment 2

[0085] See Figure 4-7 , a weighing system suitable for vehicle type discrimination for the working method of the weighing system, the weighing system includes a vehicle type detection device 10, and the vehicle type detection device 10 is installed in the weighing area of ​​the weighing platform 9 9-1 (see Figure 4 The dotted line indicates the center position of the area);

[0086] The vehicle type detection device 10 includes:

[0087] The magnetic bias generating device is used to generate a bias magnetic field 5 with stable spatial distribution, and the direction of the loop formed by the magnetic field lines of the bias magnetic field 5 ( Figure 4 The arrow in A indicates the direction) and the direction in which the weighing vehicle travels to the weighing area 9-1 ( Figure 4 The middle B arrow indicates the direction) is consistent and covers the upper space of the weighing area 9-1. If the magnetic field strength is large, it can be completely covered. If the ma...

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Abstract

The invention relates to a weighing system capable of distinguishing a vehicle type. A Kaiser window low pass filter is firstly adopted to carry out low pass digital filtering on digital weighing signals, and the cut-off frequency is set to be 10 Hz; then, sliding mean filtering is carried out on the digital weighing signals in a 0-10 Hz range after low pass filtering, the minimum frequency and the maximum amplitude for the sliding mean filtering are set, sliding mean filtering is carried out on the digital weighing signals located in the minimum frequency and no larger than the maximum amplitude, and weight data are acquired. Through carrying out sliding mean filtering on the digital weighing signals after the digital weighing signals are filtered through the Kaiser window low pass filter, weighing errors caused by engine jitter when a weighed vehicle is not flameout can be overcome.

Description

technical field [0001] The invention relates to a weighing system and a working method, in particular to a weighing system and a working method suitable for vehicle type discrimination. Background technique [0002] Vehicle overloading is an important cause of road acceleration damage. Traditional weighing systems mostly only weigh the vehicle as a whole, but cannot determine the type of vehicle and further determine whether the vehicle is overloaded. And for the production unit, the delivery vehicle will be weighed when it is empty, and then weighed when it is full, and the weight of the goods can be weighed. However, it is difficult to judge whether the vehicle is overloaded with the existing weighing system. [0003] Chinese patent document CN 103196530 A discloses a vehicle dynamic weighing system and a weighing method thereof, wherein the vehicle type is judged by collecting tire identification signals through a tire identifier. Because the technical solution uses the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01G19/02G01D21/00
CPCG01D21/00G01G19/02G01G23/005G08G1/017G08G1/042
Inventor 不公告发明人
Owner 安徽恒远电子称重设备有限公司
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