CN109828524B - Programmable control system and method - Google Patents
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Abstract
The embodiment of the invention discloses a programmable control system and a programmable control method, relates to the technical field of programmable control, and aims to overcome the defects of complex manufacturing process, few output point positions and large duty area of a programmable logic controller in the prior art. The programmable control system of the invention comprises: a plurality of light emitting units; the optical signal control unit is used for generating a light-emitting control signal of the light-emitting unit according to the control logic of the controlled unit; the photosensitive unit is used for acquiring the optical signal output by the light-emitting unit and converting the optical signal into a corresponding electric signal; and the control signal output unit is used for generating a control signal of the controlled unit according to the electric signal. The programmable control system has the advantages of reasonable structure, more output points of control signals and high integral integration level.
Description
Technical Field
The embodiment of the invention relates to the technical field of programmable control, in particular to a programmable control system and a programmable control method.
Background
Programmable logic controllers are digital arithmetic-operating electronic systems designed specifically for use in industrial environments. It uses a programmable memory, in which the instructions for implementing logical operation, sequence control, timing, counting and arithmetic operation are stored, and utilizes digital or analog input and output to control various mechanical equipments or production processes.
The existing programmable controller generally obtains a path of control signal through a multi-level gate circuit, and when there are multiple control points at a controlled end, and the control signal of each control point is variable and complex, an operation procedure of the gate circuit of the programmable controller and a circuit structure of the gate circuit are also complex at this time. The complicated operation procedure inevitably causes delay of the control signal output, so in order to ensure the output speed of the control signal of the programmable controller, the output point position of the control signal of the conventional programmable controller is limited within a certain range.
Therefore, the existing programmable logic controller is complex to manufacture, high in cost, few in output point position and large in occupied area.
Disclosure of Invention
Therefore, embodiments of the present invention provide a programmable control system and method to solve the problems of the prior art that a programmable logic controller is complex to manufacture, and has few output points and a large duty area.
In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:
a programmable control device, comprising:
a plurality of light emitting units;
the optical signal control unit is used for generating a light-emitting control signal of the light-emitting unit according to the control logic of the controlled unit;
the photosensitive unit is used for acquiring the optical signal output by the light-emitting unit and converting the optical signal into a corresponding electric signal;
and the control signal output unit is used for generating a control signal of the controlled unit according to the electric signal.
An embodiment of the invention is further characterized in that the programmable control device comprises a display screen, the display screen being divisible into a plurality of display areas, each of the display areas being a light emitting unit.
An embodiment of the present invention is also characterized in that the optical signal control unit includes:
the optical signal calculation module is used for calculating the optical signal value required to be output by each display area according to the control logic of the controlled unit;
the image generation module is used for controlling a first display area of the display screen to output first brightness and a second display area to output second brightness according to the optical signal value which needs to be output of the display area, wherein each first display area is positioned in an area which is formed by mutually splicing a plurality of second display areas adjacent to the first display area, and the first brightness is greater than the second brightness.
An embodiment of the invention is further characterized in that the first display region has a square structure with a side length of 5 mm.
The embodiment of the invention is further characterized in that the photosensitive unit further comprises an installation plate, the shape of the installation plate is the same as that of the display panel of the display screen, the installation plate is used for being arranged on the image output side of the display panel and is parallel to the display panel, and the photosensitive unit can be detachably installed on the installation plate.
The embodiment of the invention is further characterized in that the mounting plate is provided with a plurality of optical isolation covers which correspond to the display regions one by one, and the optical isolation covers are used for limiting light beams output by the display regions within receiving ranges of the photosensitive units corresponding to the display regions.
The embodiment of the invention is further characterized by further comprising a feedback unit, a control unit and a control unit, wherein the feedback unit is used for outputting a corresponding starting instruction to the light-emitting device according to a feedback program of the controlled unit, and the light-emitting device is arranged in the sensing area of the sensing screen; the sensing screen acquires the light characteristics output by the light-emitting device, and generates a corresponding feedback signal to the light signal control unit according to the light characteristics.
An embodiment of the invention is further characterized in that the light sensing unit is a photodiode and/or a photoresistor.
In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:
a programmable control method, comprising:
the plurality of light emitting units emit light based on the control logic of the controlled unit;
acquiring an optical signal output by the light-emitting unit, and converting the optical signal into a corresponding electrical signal;
and generating a control signal of the controlled unit according to the electric signal.
An embodiment of the present invention is further characterized in that the plurality of light emitting units emit light based on a control logic of a controlled unit, and the method includes:
calculating the light signal value required to be output by each display area of the display image area of the display screen according to the control logic of the controlled unit, wherein the image display area of the display screen can be divided into a plurality of display areas, and each display area is a light-emitting unit;
and controlling a first display area of the display screen to output first brightness and a second display area to output second brightness according to the optical signal value required to be output of the display area, wherein each first display area is positioned in an area formed by mutually splicing a plurality of second display areas adjacent to the first display area, and the first brightness is greater than the second brightness.
The embodiment of the invention has the following advantages:
the programmable control system and the method of the invention take the brightness of a plurality of luminous units as the analog quantity reference of the signal output point, are convenient for the manufacture of the signal output point, can achieve high density, and can easily achieve the control of hundreds of thousands of controlled point positions.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
Fig. 1 is a block diagram of a programmable control system according to embodiment 1 of the present invention;
fig. 2 is another block diagram of a programmable control system according to embodiment 1 of the present invention;
fig. 3 is a schematic view of a display screen structure of a programmable control system according to embodiment 1 of the present invention;
fig. 4 is a schematic structural diagram of an inductive screen of a programmable control system according to embodiment 1 of the present invention;
fig. 5 is a schematic view of a display screen structure of a programmable control system according to embodiment 1 of the present invention;
fig. 6 is a flowchart of a programmable control method according to embodiment 2 of the present invention;
in the figure: 1. a first display area; 2. a second display area; 3. a sensing region.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
As shown in fig. 1 to 6, the programmable control system of the present embodiment includes:
a plurality of light emitting units;
an optical signal control unit (e.g., software) for generating a light emission control signal of the light emitting unit according to a control logic of a controlled unit;
the photosensitive unit is used for acquiring the optical signal output by the light-emitting unit and converting the optical signal into a corresponding electric signal;
and the control signal output unit is used for generating a control signal of the controlled unit (such as equipment) according to the electric signal.
In the embodiment, the brightness of the plurality of light emitting units is controlled by software to drive the on-off and resistance of photosensitive components such as a photosensitive resistor and a photoresistor, and finally the on-off of the output equipment and the output strength of the electric signals are controlled. The photosensitive diode is used for acquiring the optical signal and generating a switch control signal for controlling the controlled unit according to the optical signal; the photoresistor is used for acquiring the optical signal and generating an analog control signal for controlling the controlled unit according to the optical signal.
Referring to fig. 3 and 6, optionally, the programmable control system includes a display screen, an image display area of the display screen can be divided into a plurality of display areas, each display area is a light-emitting unit, and each display area includes a plurality of pixel points.
In this embodiment, the screen is divided into corresponding number of dots according to the number of dots required (configuration software can be used, and the size of the area is customized; for example, a 5mm square, a 15.4 inch screen can be divided into 2600 areas, that is, 2600 dots).
In addition, the control point can be connected to the point position area graph of the screen by means of a PLC control program. And dividing the sensing screen into corresponding feedback areas according to the number of required feedback signal point positions. Or assigning the corresponding region as a signal feedback point using a visual function.
Alternatively, the dot position is controlled by controlling the on/off of the photodiode using the luminance of the divided pixel region (e.g., 5mm square), or the analog quantity control is performed by controlling the photo-resistor using the luminance of the divided pixel region (e.g., 5mm square).
In the above scheme, the optical signal control unit includes:
the optical signal calculation module is used for calculating the optical signal value required to be output by each display area according to the control logic of the controlled unit;
the first image generation module is used for controlling a first display area 1 of the display screen to output first brightness and a second display area 2 of the display screen to output second brightness according to the optical signal value which needs to be output of the display areas, wherein each first display area is located in an area which is formed by mutually splicing a plurality of second display areas adjacent to the first display area and is surrounded by the second display areas, and the first brightness is greater than the second brightness.
Referring to fig. 3, an embodiment of a specific application: for example, the software controls the pixel area (e.g. 5mm square) divided by the screen, the photodiode T is not turned on when dark, the relay KM is not actuated, and H is not lit.
The software controls a pixel area (such as a square with the size of 5 mm) divided by the screen, when the pixel area is on, the photosensitive diode T is conducted, the relay KM acts, and the H lamp is on.
Analog quantity control: the resistance value of the photoresistor T is controlled by the dark and bright degrees of the pixels divided by the screen, and then the terminal equipment is controlled by the size of the output electric signal.
Particularly, the sensitization unit still includes the mounting panel, the shape of mounting panel with the display panel's of display screen shape is the same, the mounting panel for arrange display panel's image output side in, and with display panel is parallel, sensitization unit demountable installation can be in on the mounting panel.
In each of the above embodiments, the mounting plate is provided with a plurality of optical isolation covers in one-to-one correspondence with the display regions, and the optical isolation covers are configured to limit light beams output by the display regions within receiving ranges of the light sensing units corresponding to the display regions.
Optionally, the device further comprises a feedback unit, configured to output a corresponding start instruction to the light emitting device according to a feedback program of the controlled unit, where the light emitting device is disposed in the sensing area of the sensing screen; the sensing screen acquires the light characteristics output by the light-emitting device, and generates a corresponding feedback signal to the light signal control unit according to the light characteristics.
Referring to fig. 4, an embodiment of a specific application: for example, when the device H lights are not on, the KM relay is not active and the KM relay contacts are not active. The led is not illuminated and no signal is fed back to the control software in the divided area of the screen (e.g. 5mm square).
When the H equipment is lighted, the KM relay acts, the KM relay contacts act, the light-emitting diode T emits light, the resistance value of a divided area (for example, a square with the thickness of 5 mm) of the induction screen is reduced, and signals of the divided area are fed back to the control software.
Analog quantity control: the signal output by the equipment becomes strong and weak, and is reflected to the light emitting diode T, and the induction screen induces the degree of darkness and brightness and feeds the degree of darkness and brightness back to the control software.
Referring to fig. 5, the led is placed in the vision segmentation area, the H lamp is on, and the led T is on. The image is input into the control software by vision, the darkness, brightness and color of the H lamp are identified to represent the on-off of the switching value, and the signal intensity of the analog quantity is weak.
Example 2
As shown in fig. 6, the programmable control method of the present embodiment includes:
the plurality of light emitting units emit light based on the control logic of the controlled unit;
acquiring an optical signal output by the light-emitting unit, and converting the optical signal into a corresponding electrical signal;
and generating a control signal of the controlled unit according to the electric signal.
Further, the plurality of light emitting units emit light based on the control logic of the controlled unit, and include:
calculating the light signal value required to be output by each display area of the display image area of the display screen according to the control logic of the controlled unit, wherein the image display area of the display screen can be divided into a plurality of display areas, and each display area is a light-emitting unit;
and controlling a first display area of the display screen to output first brightness and a second display area to output second brightness according to the optical signal value required to be output of the display area, wherein each first display area is positioned in an area formed by mutually splicing a plurality of second display areas adjacent to the first display area, and the first brightness is greater than the second brightness.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (4)
1. A programmable control apparatus, comprising:
a plurality of light emitting units;
the optical signal control unit is used for generating a light-emitting control signal of the light-emitting unit according to the control logic of the controlled unit;
the photosensitive unit is used for acquiring the optical signal output by the light-emitting unit and converting the optical signal into a corresponding electric signal;
the control signal output unit is used for generating a control signal of the controlled unit according to the electric signal;
the programmable control device comprises a display screen, wherein the display screen can be divided into a plurality of display areas, and each display area is a light-emitting unit;
the optical signal control unit includes:
the optical signal calculation module is used for calculating the optical signal value required to be output by each display area according to the control logic of the controlled unit;
the image generation module is used for controlling a first display area of the display screen to output first brightness and a second display area to output second brightness according to the optical signal value required to be output of the display area, wherein each first display area is positioned in an area formed by mutually splicing a plurality of second display areas adjacent to the first display area, and the first brightness is greater than the second brightness;
the photosensitive unit is a photosensitive diode and/or a photosensitive resistor, the photosensitive diode is used for acquiring the optical signal and generating a switch control signal for controlling the controlled unit according to the optical signal; the photoresistor is used for acquiring the optical signal and generating an analog control signal for controlling the controlled unit according to the optical signal;
the photosensitive unit further comprises an installation plate, the shape of the installation plate is the same as that of a display panel of the display screen, the installation plate is used for being arranged on the image output side of the display panel and is parallel to the display panel, and the photosensitive unit can be detachably installed on the installation plate; the mounting plate is provided with a plurality of optical isolation covers which are in one-to-one correspondence with the display areas, and the optical isolation covers are used for limiting light beams output by the display areas within receiving ranges of the photosensitive units corresponding to the display areas;
the device also comprises a feedback unit, a control unit and a control unit, wherein the feedback unit is used for outputting a corresponding starting instruction to the light-emitting device according to a feedback program of the controlled unit, and the light-emitting device is arranged in an induction area of the induction screen; the induction screen acquires the optical characteristics output by the light-emitting device, and generates a corresponding feedback signal to the optical signal control unit according to the optical characteristics;
the brightness of the plurality of light-emitting units is controlled by software to drive the on-off and resistance of the photosensitive element and the photosensitive resistor, and finally the on-off of the output equipment and the output intensity of the electric signal are controlled.
2. The programmable control device according to claim 1, wherein the first display area has a square structure with a side length of 5 mm.
3. The programmable control device according to claim 1, wherein the plurality of light emitting units emit light based on control logic of the controlled unit, and the light emitting units comprise:
calculating the light signal value required to be output by each display area of the display image area of the display screen according to the control logic of the controlled unit, wherein the image display area of the display screen can be divided into a plurality of display areas, and each display area is a light-emitting unit;
and controlling a first display area of the display screen to output first brightness and a second display area to output second brightness according to the optical signal value required to be output of the display area, wherein each first display area is positioned in an area formed by mutually splicing a plurality of second display areas adjacent to the first display area, and the first brightness is greater than the second brightness.
4. A programmable control method, comprising:
the plurality of light emitting units emit light based on the control logic of the controlled unit;
acquiring an optical signal output by the light-emitting unit, and converting the optical signal into a corresponding electrical signal;
the photosensitive diode acquires the optical signal and generates a switch control signal for controlling the controlled unit according to the optical signal; the photoresistor acquires the optical signal and generates an analog control signal for controlling the controlled unit according to the optical signal;
generating a control signal of the controlled unit according to the electric signal;
the plurality of light emitting units emit light based on the control logic of the controlled unit, and the light emitting unit comprises:
calculating the light signal value required to be output by each display area of the display image area of the display screen according to the control logic of the controlled unit, wherein the image display area of the display screen can be divided into a plurality of display areas, and each display area is a light-emitting unit;
controlling a first display area of the display screen to output first brightness and a second display area to output second brightness according to the optical signal value required to be output of the display area, wherein each first display area is positioned in an area formed by mutually splicing a plurality of second display areas adjacent to the first display area, and the first brightness is greater than the second brightness;
outputting a corresponding starting instruction to a light-emitting device according to a feedback program of a controlled unit, wherein the light-emitting device is arranged in an induction area of an induction screen; the induction screen acquires the optical characteristics output by the light-emitting device, and generates a corresponding feedback signal to the optical signal control unit according to the optical characteristics;
the mounting plate is arranged on the image output side of the display panel and is parallel to the display panel; the mounting plate is provided with a plurality of optical isolation covers which correspond to the display areas one by one, and the optical isolation covers limit light beams output by the display areas within the receiving range of the photosensitive units corresponding to the display areas;
the brightness of the plurality of light-emitting units is controlled by software to drive the on-off and resistance of the photosensitive element and the photosensitive resistor, and finally the on-off of the output equipment and the output intensity of the electric signal are controlled.
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