Weighing control device of hopper scale and method thereof

A technology of control device and hopper scale, which is applied in the direction of measuring device, weighing, automatic feeding/discharging weighing equipment, etc., can solve problems such as difficult to find in operation, inaccurate measurement of hopper scale, measurement loss, etc., and achieve easy Maintenance, long service life and high reliability effect

Active Publication Date: 2009-09-16
SAIMO ELECTRIC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The weighing control device of the hopper scale with this structure, because the three weighing signals are connected in parallel to form a weighing signal and sent to the weighing controller, so when one

Method used

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  • Weighing control device of hopper scale and method thereof
  • Weighing control device of hopper scale and method thereof
  • Weighing control device of hopper scale and method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0029] Embodiment one, figure 1 and figure 2 As shown, the weighing control device of the hopper scale is mainly composed of three load cells 1 A, B, and C, a fully suspended weighing hopper 5 supported by three load cells 1 , and a load controller 4 . When the load cell 1 is an analog signal sensor, the load cell 1 is connected with a signal converter 2, such as figure 1 Shown; When the load cell 1 is a digital signal sensor, the signal converter 2 is not required. The weighing controller 4 mainly includes a processor, a memory, a display and a power supply, wherein the signal converter 2 is a 24-bit analog-to-digital conversion circuit AD7710, the processor is a 32-bit CPU integrated circuit S3C44BOX, the memory is an integrated circuit 39VF160, and the display is a 640× 320 dot matrix, the power supply is 220V AC. The processor includes a weighing signal comparator, three auxiliary weighing devices 3 connected to it, and a weighing device comparator connected between th...

Example Embodiment

[0038] Embodiment two, image 3 As shown, the number of load cells 1 is four, A, B, C, and D, and the four load cells 1 of A, B, C, and D are evenly arranged outside the weighing hopper 5, and are used as sensors for the fulcrum when forming a lever. The number of 1 is two, and the other two sensors 1 are used as force application points, and other aspects are basically the same as the previous embodiment, and the description is omitted.

[0039] Figure 5 As shown, the weighing control signal comparison program flow of the four load cells 1:

[0040] a. Whether the comparison difference between the two auxiliary weighing devices 3 is within the set range

[0041] b. Yes, it shows that the fully suspended weighing hopper 5 combined with four load cells 1 is the main weighing weight of the structure;

[0042] c. No, the weighing signal comparator compares the weighing signals of the four weighing sensors 1 of A, B, C, and D, and whether the difference is within the set range...

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Abstract

The invention relates to a weighing control device of a hopper scale and a method thereof. The weighing control device comprises three or four weighing sensors, a full-suspension weighing hopper and a weighing controller, wherein the outputs of the weighing sensors enter the weighing controller respectively; the weighing controller performs combined calculations with four different programs on the three or four weighing sensors and performs real-time online comparison on three groups of weighing numerical values; and if the differences of the three groups of the weighing numerical values are too large, the outputs of the three or four weighing sensors are compared to determine that a certain weighing sensor goes wrong; and the weighing controller displays a group of normal weighing numerical values output by the weighting sensors. Thus, the weighing control device can guarantee that a certain weight sensor goes wrong, and the hopper scale can still weigh reliably. The weighing control device improves the reliability and the metering accuracy of the hopper scale and is applicable to the precise and reliable weighing metering by the hopper scale. Besides, the weighing control device has the advantages of compact and reasonable structure, high reliability, precise metering, easy maintenance, long service life and extensive practicability.

Description

technical field [0001] The invention relates to a weighing control device and a method thereof, in particular to a weighing control device and a method of a hopper scale suitable for weighing bulk materials. Background technique [0002] At present, the hopper scales with a full-suspension hopper structure used for weighing bulk materials mostly use load cells on the hopper, and the weighing signals output by the load cells are connected in parallel to form a weighing signal and sent to the weighing controller. A weighing control device that displays the weighing results on the weighing controller. The weighing control device of the hopper scale with this structure, because the three weighing signals are connected in parallel to form a weighing signal and sent to the weighing controller, so when one of the sensors fails, the entire hopper scale will be inaccurate. , and it is not easy to be found during operation, so in the process of weighing materials, losses will be caus...

Claims

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Application Information

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IPC IPC(8): G01G17/00G01G13/00
Inventor 厉达何福胜张兴国
Owner SAIMO ELECTRIC
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