CN103353767B - A kind of method that color selector background board and light source are regulated - Google Patents

Abstract

The invention discloses a method for adjusting the background board and light source of a color sorter, which includes a computer, a control module, a stepping motor, a switching power supply, a background board, an LED light source and a photoelectric sensor, and a single neuron PID control device is installed in the computer. In the single neuron PID controller, there is a Hebb learning rule algorithm to modify its neuron weights, and online tuning PID parameters, the control module is connected with the computer, and the stepper motor and switching power supply are respectively connected with The control module is connected, the background board is connected with the stepper motor, and the LED light source is connected with the switching power supply. The present invention adopts a single neuron PID controller, modifies its neuron weights according to the supervised Hebb learning algorithm in the neural network, and can adjust the PID parameters online, so as to be able to adapt to the parameter changes and interference of the controlled object, and adjust the controller Parameters, while having the advantages of simple structure, high reliability and easy implementation of conventional PID controllers, it meets the requirements of high-performance color sorting.

Description

A method for adjusting background plate and light source of color sorter

technical field

The invention relates to the technical field of color sorters, in particular to a method for adjusting a background plate and a light source of a color sorter.

Background technique

At present, color sorting machines have been widely used on a large scale, not only in traditional grain processing enterprises in the past, but also in tea and industrial products, which are also undergoing technological innovation brought about by color sorting technology. The traditional black and white CCD color sorter sorting method mainly relies on the background plate to distinguish finished products and defective products, which and the light source form the optical system of the color sorter. With the cooperation of the system components of the whole machine, the color sorter has multiple modes such as selecting different colors, selecting belly white, selecting yellow and white, selecting transparent grains, and reverse selection. Among them, along with the adjustment of the light source and the background plate, it is troublesome to use for ordinary operators. The quality of its color sorting performance is largely determined by the experience of the operator.

During the working process of the color sorter, a slight inadvertent adjustment of the angle of the background plate may cause the high-speed spray valve to blow constantly, which will seriously affect the performance of the color sorter and may cause damage to the spray valve. The change or instability of the light source will also lead to the sudden deterioration of color selection and the occurrence of abnormal phenomena of the whole machine. Therefore, it is very important to achieve stable control of the optical system.

Contents of the invention

The object of the present invention is to provide a method for adjusting the background plate and light source of the color sorter in order to remedy the defects of the prior art.

The present invention is achieved through the following technical solutions:

A method for adjusting the background board and light source of a color sorter, including a computer, a control module, a stepping motor, a switching power supply, a background board, an LED light source and a photoelectric sensor, and a single neuron PID controller is installed in the computer, There is a Hebb learning rule algorithm in the single neuron PID controller to modify its neuron weights, and online tuning PID parameters, the control module is connected with the computer, and the stepper motor and switching power supply are respectively connected to the control module The background board is connected with the stepping motor, and the LED light source is connected with the switching power supply; the rotation angle of the background board and the voltage of the LED light source are manually adjusted many times to obtain the appropriate rotation angle range of the background board and the LED light source. The range of the appropriate voltage of the light source, according to the range obtained, set appropriate parameters in the computer, collect the position of the background plate and the brightness of the LED light source through the photoelectric sensor, and convert the collected signal into an electrical signal, and convert the electrical signal Pass it to the computer, compare the received data with the preset data through the single-neuron PID controller, and pass the new input value after comparison calculation to the control module, and control the stepping motor and switching power supply through the control module Make corresponding actions to rotate the background plate to the desired position and make the LED light source reach the desired brightness.

Input parameters into the computer through the man-machine interface.

The advantage of the present invention is: the present invention adopts single neuron PID controller, according to the supervised Hebb learning algorithm in the neural network, its neuron weight value is modified, and PID parameter can be adjusted online, so as to be able to adapt to the parameter change of the controlled object As well as interference, the parameters of the controller are adjusted, and at the same time, it has the advantages of simple structure, high reliability and easy implementation of the conventional PID controller, which meets the requirements of high-performance color sorting.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

Fig. 2 is a schematic diagram of the present invention.

detailed description

As shown in Figures 1 and 2, a method for adjusting the background board and light source of a color sorter includes a computer 1, a control module 2, a stepping motor 3, a switching power supply 4, a background board 5, an LED light source 6 and a photoelectric The sensor 7 is equipped with a single-neuron PID controller in the computer 1. In the single-neuron PID controller, there is a Hebb learning rule algorithm to modify its neuron weights, and the PID parameters are adjusted online. The control module 2 and The computer 1 is connected, the stepping motor 3 and the switching power supply 4 are connected with the control module 2 respectively, the background board 5 is connected with the stepping motor 3, and the LED light source 6 is connected with the switching power supply 4; multiple times By manually adjusting the rotation angle of the background board 5 and the voltage of the LED light source 6, the appropriate rotation angle range of the background board 5 and the appropriate voltage range of the LED light source 6 are obtained, and appropriate parameters are set in the computer 1 according to the obtained range, Gather the position of the background plate 5 and the brightness of the LED light source 6 through the photoelectric sensor 7, and convert the collected signal into an electrical signal, transmit the electrical signal to the computer 1, and pass the received data to the single neuron PID controller. Compare with the preset data, and pass the new input value after comparison and calculation to the control module 2, and control the stepping motor 3 and switching power supply 4 to make corresponding actions through the control module 2, so that the background plate 5 rotates to The required position makes the LED light source 6 reach the required brightness.

Input parameters into the computer 1 through the man-machine interface.

Claims (2)

1. A method for adjusting the background board and light source of a color sorter, characterized in that: it includes a computer, a control module, a stepping motor, a switching power supply, a background board, an LED light source and a photoelectric sensor, and a single Neuron PID controller, in the single neuron PID controller, there is a Hebb learning rule algorithm to modify its neuron weight, and online tuning PID parameters, the control module is connected with the computer, the stepper motor and The switching power supply is connected to the control module respectively, the background board is connected to the stepping motor, and the LED light source is connected to the switching power supply; the rotation angle of the background board and the voltage of the LED light source are manually adjusted many times to obtain the The range of the rotation angle and the range of the voltage of the LED light source are set parameters in the computer according to the obtained range, and the position of the background plate and the brightness of the LED light source are collected by the photoelectric sensor, and the collected signal is converted into an electrical signal, and the The electrical signal is sent to the computer, and the received data is compared with the preset data through the single-neuron PID controller, and the new input value after the comparison calculation is sent to the control module, and the stepping motor and the control module are controlled by the control module. The switching power supply makes corresponding actions to make the background plate rotate to the required position and make the LED light source reach the required brightness. 2. A method for adjusting the background plate and light source of the color sorter according to claim 1, characterized in that the parameters are input into the computer through the man-machine interface.