CN219164770U

CN219164770U - Light source control circuit and light source controller with same

Info

Publication number: CN219164770U
Application number: CN202222787918.8U
Authority: CN
Inventors: 郑海强; 徐凯
Original assignee: Maiweiku Xiamen Technology Co ltd
Current assignee: Maiweiku Xiamen Technology Co ltd
Priority date: 2022-10-21
Filing date: 2022-10-21
Publication date: 2023-06-09
Anticipated expiration: 2032-10-21

Abstract

The utility model discloses a light source control circuit and a light source controller with the same, wherein the light source control circuit comprises: the connecting unit is connected with the upper computer through a PCI interface; the main control unit is connected with the connecting unit, communicates with the upper computer through the connecting unit and outputs a corresponding PWM control signal; the input end of the driving unit is connected with the output end of the main control unit, and the output end of the driving unit is connected with the LED light source so as to perform corresponding light control on the LED light source according to the received PWM control signal; the trigger unit is connected with the main control unit, and the trigger unit sends a trigger signal received from the outside to the main control unit, so that the main control unit controls the driving unit to perform corresponding light control on the LED light source according to the trigger signal. Therefore, the system can be integrated on a computer or an industrial personal computer, thereby greatly improving the user experience.

Description

Light source control circuit and light source controller with same

Technical Field

The utility model relates to the technical field of visual detection, in particular to a light source control circuit and a light source controller with the same.

Background

The related art center, the indispensable light source of machine vision detection, the light source of present machine vision detection is the LED light source, needs corresponding light source controller to carry out light control, because present light source controller is independent equipment, and the volume is great, and needs installation patch cord, and it is very inconvenient on the use, influences user experience.

Disclosure of Invention

The present utility model aims to solve at least to some extent one of the technical problems in the above-described technology. Therefore, the utility model aims to provide a light source control circuit and a light source controller with the same, which can be integrated on a computer or an industrial personal computer, so that the convenience of use is improved, and the user experience is further improved.

To achieve the above object, an embodiment of the present utility model provides a light source control circuit, including: the connecting unit is connected with the upper computer through a PCI interface; the main control unit is connected with the connecting unit, communicates with the upper computer through the connecting unit and outputs a corresponding PWM control signal; the input end of the driving unit is connected with the output end of the main control unit, and the output end of the driving unit is connected with the LED light source so as to perform corresponding light control on the LED light source according to the received PWM control signal; the trigger unit is connected with the main control unit, and the trigger unit sends a trigger signal received from the outside to the main control unit, so that the main control unit controls the driving unit to perform corresponding light control on the LED light source according to the trigger signal.

According to the light source control circuit provided by the embodiment of the utility model, the connection unit is connected with the upper computer, the main control unit is connected with the connection unit so as to communicate with the upper computer, so that data information sent by the upper computer is obtained, a corresponding PWM control signal is output according to the data information, the input end of the driving unit is connected with the output end of the main control unit, the output end of the driving unit is connected to the LED light source, the driving unit performs light control on the LED light source according to the received PWM control signal, the triggering unit is connected with the main control unit, and the triggering unit sends a triggering signal received from the outside to the main control unit, so that the main control unit controls the driving unit to perform corresponding light control on the LED light source according to the triggering signal.

In addition, the light source control circuit according to the above embodiment of the present utility model may further have the following additional technical features:

optionally, the connection unit includes a PCI interface unit and a conversion unit that are connected, where the PCI interface unit is connected to the upper computer, and the conversion unit converts the PCI interface into serial communication, so that the main control unit communicates with the upper computer through the serial port.

Optionally, the output end of the driving unit is connected with two paths of LED light sources; the trigger unit comprises an optical coupler conversion unit and a signal frequency division unit which are connected, wherein the optical coupler conversion unit converts a differential signal into a TTL signal, the signal frequency division unit is connected with the main control unit, and the signal frequency division unit carries out frequency division processing on the TTL signal and sends the TTL signal after the frequency division processing to the main control unit so that the main control unit carries out light control on two paths of LED light sources according to the TTL signal after the frequency division processing and the differential signal to realize phase synchronization of the two paths of LED light sources.

Optionally, the trigger unit further includes a signal switching unit, and the signal frequency dividing unit is connected with the main control unit through the signal switching unit, and the signal switching unit includes two multiplexers and a demultiplexer chip. Optionally, the light source control circuit further includes: the power supply unit is used for acquiring the internal power supply of the upper computer; the input end of the boosting unit is connected with the power supply unit, the output end of the boosting unit is connected with the driving unit, and the boosting unit boosts the voltage output by the power supply unit so as to supply power to the LED light source; the input end of the voltage reducing unit is connected with the power supply unit, the output end of the voltage reducing unit is connected with the main control unit, and the voltage reducing unit reduces the voltage output by the power supply unit so as to supply power for the main control unit.

Optionally, the power supply unit obtains the internal power supply of the upper computer through a 4PIN-D interface.

Optionally, a main control chip of the main control unit adopts ESP32-WROOM-32.

To achieve the above object, an embodiment of a second aspect of the present utility model provides a light source controller including a light source control circuit as described in the above embodiment.

According to the light source controller provided by the embodiment of the utility model, the light source control circuit can be integrated on a computer or an industrial personal computer, so that the user experience is greatly improved.

Drawings

Fig. 1 is a block schematic diagram of a light source control circuit according to an embodiment of the present utility model.

Fig. 2 is a schematic circuit diagram of a connection unit according to an embodiment of the present utility model.

Fig. 3 is a schematic circuit diagram of a master control unit according to an embodiment of the utility model.

Fig. 4 is a schematic circuit diagram of a driving unit according to an embodiment of the present utility model.

Fig. 5 is a schematic circuit diagram of an optocoupler conversion unit according to an embodiment of the utility model.

Fig. 6 is a schematic circuit diagram of a signal dividing unit according to an embodiment of the present utility model.

Fig. 7 is a schematic circuit diagram of a signal switching unit according to an embodiment of the present utility model.

Fig. 8 is a circuit schematic of a power supply unit according to an embodiment of the utility model.

Fig. 9 is a circuit schematic of a boosting unit according to an embodiment of the present utility model.

Fig. 10 is a circuit schematic of a buck unit according to one embodiment of the utility model.

Fig. 11 is a block schematic diagram of a light source controller according to an embodiment of the present utility model.

Description of the reference numerals: .

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

In order that the above-described aspects may be better understood, exemplary embodiments of the present utility model will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present utility model are shown in the drawings, it should be understood that the present utility model may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the utility model to those skilled in the art.

In order to better understand the above technical solutions, the following detailed description will refer to the accompanying drawings and specific embodiments.

Fig. 1 is a block schematic diagram of a light source control circuit according to an embodiment of the utility model. As shown in fig. 1, the light source control circuit of the embodiment of the present utility model includes a connection unit 100, a main control unit 200, a driving unit 300, and a triggering unit 400.

The connection unit 100 is connected to an upper computer (such as a computer or an industrial personal computer). As an embodiment, as shown in fig. 2, the connection unit 100 includes a PCI interface unit and a conversion unit U2 that are connected, and the conversion unit U2 converts the PCI interface into serial communication, so that the main control unit 200 communicates with the host computer through the serial port. It should be noted that, the conversion unit U2 is a ch351q_s bus dual serial port or a print port chip, and is used for converting PCI into dual serial port and PCI into print port. The PCI interface is converted into serial communication by only being used as a PCI to single-channel serial port, and the main control unit 200 can communicate with an upper computer through the serial port by installing a corresponding driver.

The main control unit 200 is connected with the connection unit 100, and the main control unit 200 communicates with the upper computer through the connection unit 100 so as to acquire data information sent by the upper computer and output a corresponding PWM control signal according to the data information.

As an embodiment, as shown in fig. 3, the main control chip M1 of the main control unit 200 may use ESP 32-wrom-32 To provide data processing, data storage, serial data communication, trigger signal receiving, light brightness adjusting control for the system Strobe, etc. The main control unit 200 passes through the 35 # pin and the conversion unit UAnd the No. 43 pin of the conversion unit U2 is connected with the No. 41 pin of the main control unit 200 through the No. 34 pin, so that communication is realized.

An input terminal of the driving unit 300 is connected to an output terminal of the main control unit 200, an output terminal of the driving unit 300 is connected to the LED light source, and the driving unit 300 performs light control, such as brightness adjustment, strobe, etc., in response to the LED light source according to the received PWM control signal.

As an embodiment, the driving unit 300 is provided with an output interface and a PTC resistor, the driving unit 300 is connected to the LED light source through the output interface, and the driving unit 300 performs short-circuit protection on the output interface through the PTC resistor.

As a specific embodiment, as shown in fig. 4, P15 in the driving unit 300 is a power supply interface of two paths of LED light sources, and Q2 and Q4 are N-MOS transistors, which can provide relatively large output current. P3 and P5 are PTC resistors and are protected by 2A. U5 is the gate drive UCC27324 chip, U9 is the 2-input AND gate chip 74HC08.

The trigger unit 400 is connected with the main control unit 200, and the trigger unit 400 sends a trigger signal received from the outside to the main control unit 200, so that the main control unit 200 controls the driving unit 300 to perform corresponding light control on the LED light source according to the trigger signal. Specifically, the trigger signal is a differential signal, which may occur as a servo encoder, and the trigger unit 400 may receive the differential signal and convert it into a processable TTL signal, and then transmit it to the main control unit 200.

As a specific embodiment, the output end of the driving unit 300 is connected to two paths of LED light sources. The trigger unit 400 includes an optical coupler conversion unit and a signal frequency division unit, which are connected, the optical coupler conversion unit converts the differential signal into a TTL signal, the signal frequency division unit is connected with the main control unit 200, the signal frequency division unit performs frequency division processing on the TTL signal, and sends the TTL signal after the frequency division processing to the main control unit 200, so that the main control unit 200 performs light control on two paths of LED light sources according to the TTL signal after the frequency division processing and the differential signal, so as to achieve phase synchronization of the two paths of LED light sources.

Specifically, as shown in fig. 5, the optocoupler conversion chip D10 is a high-speed optocoupler 6N137S (TA) and is responsible for converting the differential signal into a TTL signal that is easy to process. As shown in fig. 6, the signal frequency dividing unit is responsible for dividing the TTL signal, where the frequency dividing chip U15 is a binary counting chip CD4040BM96, and is responsible for dividing the input signal (i.e. the differential signal), and the U16 and U18 are respectively a 2-input and gate chip 74HC08 and a 2-input and non-gate chip 74HC00, and the output signals thereof are matched with the differential signal output from the periphery, so that the phase synchronization of the dual LED light source can be realized, thereby realizing the strobe function.

Referring to fig. 7, the triggering unit 400 further includes a signal switching unit, and the signal frequency dividing unit is connected to the main control unit 200 through the signal switching unit, where the signal switching unit includes two multiplexers and a demultiplexer chip. The U19 and the U20 are multiplexer and demultiplexer chips CD74HC4052, and two chips are used for realizing the instant switching of 4 functions output by two paths of LED light sources and independently controlling the two paths of LED light sources.

As an embodiment, referring to fig. 8-10, the light source control circuit further includes a power supply unit, a voltage boosting unit and a voltage reducing unit, as shown in fig. 8, where the power supply unit obtains an internal power supply in the upper computer through a 4PIN-D interface. As shown in fig. 9, the input end of the boosting unit is connected to the power supply unit, the output end thereof is connected to the driving unit 300, and the boosting unit performs boosting processing on the voltage output from the power supply unit so as to supply power to the LED light source. Specifically, U6 in the BOOST unit is a UC3842 current-controlled pulse width modulation chip, and based on a BOOST circuit, converts a 12V voltage into 24V to be used as a supply voltage of the LED light source. U4 is LM7810 three terminal voltage stabilizing integrated circuit, and it can be with 12V voltage conversion 10V voltage to regard as the open voltage of MOS pipe.

The input end of the voltage reducing unit is connected with the power supply unit, the output end of the voltage reducing unit is connected with the main control unit 200, and the voltage reducing unit can reduce the voltage output by the power supply unit so as to supply power to the main control unit 200. Specifically, referring to fig. 10, both U1 and U3 in the step-down unit are main electronic components, and the U1 chip is a single-chip asynchronous step-down power chip of XL1509-5.0E1, which can convert 12V voltage into 5V voltage. The U3 chip is a 3.3VLD0 buck chip, and can provide 3.3V working voltage for the main control unit 200.

After the program is started, initializing basic peripheral equipment such as PWM (pulse-Width modulation), serial ports, interrupt and the like to acquire system configuration information; and executing corresponding functions according to the configuration information of the system. 1. Normal mode: issuing serial port command data through the upper computer, analyzing the data and executing corresponding operation; such as parameter modification, light control of the light source, etc. 2. Triggering mode: and the light is controlled to be turned on or off according to parameter requirements through the input interruption of the optocoupler.

In summary, the light source control circuit has a standard PCI interface, is powered by an internal power supply of the host, is a large 4PIN-D interface, has high universality and is easy to integrate into the host; by adopting a serial port communication mode, corresponding instructions can be issued according to the communication protocol requirements, and the parameter setting of the light source control card and the control of the light source can be realized; the optocoupler isolates input, supports functions of external triggering stroboscopic and the like, and is suitable for complex working environments.

In addition, as shown in fig. 11, an embodiment of the present utility model also proposes a light source controller 1000, which includes the light source control circuit 2000 as described in the above embodiment.

It will be appreciated by those skilled in the art that embodiments of the present utility model may be provided as a method, system, or computer program product. Accordingly, the present utility model may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present utility model may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present utility model is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the utility model. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It should be noted that in the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The utility model may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The use of the words first, second, third, etc. do not denote any order. These words may be interpreted as names.

While preferred embodiments of the present utility model have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the utility model.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present utility model without departing from the spirit or scope of the utility model. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms should not be understood as necessarily being directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Further, one skilled in the art can engage and combine the different embodiments or examples described in this specification.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims

1. A light source control circuit, comprising:

the connecting unit is connected with the upper computer through a PCI interface;

the main control unit is connected with the connecting unit, communicates with the upper computer through the connecting unit and outputs a corresponding PWM control signal;

the input end of the driving unit is connected with the output end of the main control unit, and the output end of the driving unit is connected with the LED light source so as to perform corresponding light control on the LED light source according to the received PWM control signal;

the trigger unit is connected with the main control unit, and the trigger unit sends a trigger signal received from the outside to the main control unit, so that the main control unit controls the driving unit to perform corresponding light control on the LED light source according to the trigger signal.

2. The light source control circuit according to claim 1, wherein the connection unit comprises a PCI interface unit and a conversion unit, which are connected, the PCI interface unit is connected with the host computer, and the conversion unit converts the PCI interface into serial communication so that the main control unit communicates with the host computer through the serial port.

3. The light source control circuit according to claim 1, wherein the output end of the driving unit is connected with two paths of LED light sources; the trigger unit comprises an optical coupler conversion unit and a signal frequency division unit which are connected, wherein the optical coupler conversion unit converts a differential signal into a TTL signal, the signal frequency division unit is connected with the main control unit, and the signal frequency division unit carries out frequency division processing on the TTL signal and sends the TTL signal after the frequency division processing to the main control unit so that the main control unit carries out light control on two paths of LED light sources according to the TTL signal after the frequency division processing and the differential signal to realize phase synchronization of the two paths of LED light sources.

4. A light source control circuit as claimed in claim 3, wherein the trigger unit further comprises a signal switching unit, the signal dividing unit being connected to the main control unit through the signal switching unit, the signal switching unit comprising two multiplexer and demultiplexer chips.

5. The light source control circuit of claim 1, wherein the light source control circuit further comprises:

the power supply unit is used for acquiring the internal power supply of the upper computer;

the input end of the boosting unit is connected with the power supply unit, the output end of the boosting unit is connected with the driving unit, and the boosting unit boosts the voltage output by the power supply unit so as to supply power to the LED light source;

the input end of the voltage reducing unit is connected with the power supply unit, the output end of the voltage reducing unit is connected with the main control unit, and the voltage reducing unit reduces the voltage output by the power supply unit so as to supply power for the main control unit.

6. The light source control circuit according to claim 5, wherein the power supply unit obtains the internal power supply of the host computer through a 4PIN-D type interface.

7. The light source control circuit of any one of claims 1-6, wherein a master control chip of the master control unit employs ESP 32-wrook-32.

8. A light source controller comprising a light source control circuit as claimed in any one of claims 1-7.