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A weighing system and working method suitable for vehicle type discrimination

一种称重系统、车辆类型的技术，应用在车辆类型判别的称重系统领域，能够解决轮胎识别器无法准确判别车辆类型、测量误差、前后轮胎不一致等问题，达到车辆扰动磁场稳定、避免车辆超载、磁场信号强的效果

Active Publication Date: 2017-03-29
CHANGZHOU HONGLI WEIGHING EQUIP
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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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  • A weighing system and working method suitable for vehicle type discrimination
  • A weighing system and working method suitable for vehicle type discrimination
  • A weighing system and working method suitable for vehicle type discrimination

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 suitable for vehicle type judgment and a working method. The working method includes: firstly performing low-pass digital filtering on digital weighting signals by adoption of a Caesar window low-pass filter, the cut-off frequency being set as 10Hz; and then performing sliding mean filtering on the digital weighing signals in the range of 0 to 10HZ after low-pass filtering, and setting the minimum frequency and the maximum amplitude of the sliding mean filtering, i.e., performing sliding mean filtering on the digital weighing signals which are within the minimum frequency and not greater than the maximum amplitude, so as to obtain weight data. According to the working method provided by the invention, after filtering is performed on the digital weighing signals through the Caesar window low-pass filter, sliding mean filtering is then performed, thereby overcoming a weighing error caused by engine jitter in a non-flameout state of a weighted vehicle.

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 Patents(China)
IPC IPC(8): G01G19/02G01V3/12
CPCG01D21/00G01G19/02G01G23/005G08G1/017G08G1/042
Inventor 杨星东侯军周航水
Owner CHANGZHOU HONGLI WEIGHING EQUIP
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