Device for automatically switching light sources of cloth inspecting machine

Abstract

The utility model discloses an automatic light source switching device of a cloth inspecting machine, which comprises a PLC (programmable logic controller) control module, a multi-stage light source and a photoelectric sensing module, the photoelectric sensing module is used for acquiring fabric color information of a detected object, and the PLC control module is used for controlling irradiation light switching of the multi-stage light source according to the fabric color information acquired by the photoelectric sensing module. And the multi-stage light source is used for irradiating a detected object. The device does not need manual operation, realizes full-automatic control, is safe and reliable, and is easy to popularize and use.

Description

Technical Field

[0001] The utility model belongs to the technical field of cloth detection in the textile industry, and particularly relates to a device for automatically switching light sources of a cloth inspection machine. Background Art

[0002] Existing fabric inspection methods mainly rely on workers' personal experience and judgment to manually control the light source required during the inspection process. This method has the following major problems:

[0003] 1. Complicated operation: Workers need to manually switch the light source, which not only increases the workload, but also easily leads to operator fatigue and errors due to frequent operations.

[0004] 2. Synchronization problem: In the process of manually switching the light source, it is difficult to ensure the synchronization between the light source and the image acquisition module, which may lead to inaccurate timing of image acquisition and affect the accuracy of the detection results.

[0005] 3. Light source matching problem: Since the switching of light sources is controlled by workers' experience, it is difficult to ensure that the object being inspected is given a suitable light source, which may lead to poor light quality during the inspection process and affect the inspection effect of the fabric.

[0006] 4. Low efficiency: The manual method of controlling the light source is inefficient and cannot meet the needs of large-scale production, especially on high-output production lines. This method will seriously restrict production efficiency.

[0007] 5. Risk of misjudgment: Due to the instability of light source control and the subjectivity of workers’ judgment, this method is prone to misjudgment, affecting the accuracy and reliability of fabric detection.

[0008] Due to the existence of the above-mentioned problems, the existing manual light source control method cannot effectively eliminate quality risks, which may cause unqualified products to enter the market, affecting the company's brand image and market competitiveness. Utility Model Content

[0009] The technical problem to be solved by the utility model is to provide a device for automatically switching the light source of a cloth inspection machine in view of the deficiencies in the above-mentioned prior art, which does not require manual operation, realizes fully automatic control, is safe and reliable, and is easy to promote and use.

[0010] In order to solve the above technical problems, the technical solution adopted by the utility model is: a device for automatically switching the light source of a cloth inspection machine, comprising a PLC control module, a multi-level light source and a photoelectric sensing module, wherein the photoelectric sensing module is used to collect fabric color information of an object to be inspected, and the PLC control module is used to control the switching of the irradiation light of the multi-level light source according to the fabric color information collected by the photoelectric sensing module, and the multi-level light source is used to irradiate the object to be inspected.

[0011] In the above-mentioned device for automatically switching the light source of the cloth inspection machine, the photoelectric sensing module is a photoelectric sensing module with an amplifying circuit.

[0012] The photoelectric sensing module with amplification circuit can collect fabric color information more accurately and can accurately identify it even when the color features are not obvious or the ambient light is insufficient.

[0013] The above-mentioned device for automatically switching the light source of the cloth inspection machine also includes an image acquisition module and a visual detection module. The image acquisition module is used to collect image information of the object to be inspected. The image acquisition module and the visual detection module are signal-connected, and the visual detection module and the PLC control module are signal-connected.

[0014] The addition of the image acquisition module and the visual inspection module enables the device to collect and analyze the image information of the object being inspected, providing richer data support for inspection. The signal connection between the visual inspection module and the PLC control module makes the inspection results more accurate and can better identify defects or other characteristics of the fabric.

[0015] The above-mentioned device for automatically switching the light source of the fabric inspection machine also includes a master control cabinet, and the PLC control module and the visual inspection module are controlled by the master control cabinet. The addition of the master control cabinet realizes the centralized control of the PLC control module and the visual inspection module, simplifies the operation process, and improves the stability and reliability of the system.

[0016] The above-mentioned device for automatically switching the light source of the fabric inspection machine also includes a main power supply for power supply. The main power supply provides stable power for the entire device, ensuring the stability and reliability of the device during long-term operation.

[0017] The above-mentioned device for automatically switching the light source of the fabric inspection machine also includes a production line for conveying the inspected object to the inspection station. The addition of the production line realizes the automatic conveyance of the inspected object to the inspection station, reduces manual operation, and improves production efficiency and safety.

[0018] Compared with the prior art, the utility model has the following advantages:

[0019] 1. Automatic light source switching: The PLC control module automatically switches the multi-level light source according to the fabric color information collected by the photoelectric sensing module to meet the detection needs of fabrics of different colors.

[0020] 2. Improve detection adaptability: The device can identify different fabric colors and optimize the detection effect by switching the light source to improve the adaptability to fabrics of different colors.

[0021] The technical solution of the utility model is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a circuit principle block diagram of the utility model.

[0023] Description of reference numerals:

[0024] 1—Main power supply; 2—Production line; 3—Main control cabinet;

[0025] 4—Visual inspection module; 5—PLC control module; 6—Multi-level light source;

[0026] 7—Image acquisition module; 8—Photoelectric sensing module; 9—Object to be detected. DETAILED DESCRIPTION

[0027] like Figure 1 As shown, a device for automatically switching the light source of a cloth inspection machine includes a PLC control module 5, a multi-level light source 6 and a photoelectric sensing module 8. The photoelectric sensing module 8 is used to collect fabric color information of an object to be inspected 9. The PLC control module 5 is used to control the switching of the irradiation light of the multi-level light source 6 according to the fabric color information collected by the photoelectric sensing module 8. The multi-level light source 6 is used to irradiate the object to be inspected 9.

[0028] In this embodiment, the photoelectric sensing module 8 is a photoelectric sensing module 8 with an amplifying circuit.

[0029] It should be noted that dark fabrics require higher brightness to highlight details, while light fabrics require lower brightness to prevent overexposure. Brightly colored fabrics require a light source that complements their color to enhance contrast and visibility of details.

[0030] Therefore, it is very important for the photoelectric sensing module 8 to accurately detect the color depth of the fabric. In this embodiment, the photoelectric sensing module 8 selects a photodiode sensor.

[0031] Photodiode sensors offer the following advantages:

[0032] 1) High photoelectric conversion efficiency: Photodiodes can efficiently convert light energy into electrical energy, improving energy utilization efficiency. When light shines on the PN junction of a photodiode, the energy of the photon will be transferred to the electrons in the conduction band, causing them to jump to the conduction band to form a current.

[0033] 2) High sensitivity: Photodiodes respond quickly to light and can sense changes in light in real time. Changes in light intensity will quickly cause corresponding changes in current.

[0034] 3) Wide response frequency: Photodiodes have a wide response frequency range to light signals and can receive light signals of various wavelengths from infrared to ultraviolet. Photodiodes made of different materials have different response ranges to light signals of different wavelengths.

[0035] However, considering that the current change caused by the change in the brightness of the detected object by the photodiode is very small, a photodiode with a corresponding amplification circuit is selected, and different thresholds can be set according to the brightness requirements of the detection environment. The photodiode is responsible for collecting light signals, and the amplification circuit enhances the signal to improve the detection sensitivity. A high-precision amplifier, such as an operational amplifier, is used to amplify the weak signal collected by the photoelectric sensor. When the PLC control module 5 detects that the analog signal input reaches different thresholds, it will trigger the control of the relevant light source.

[0036] In this embodiment, it also includes an image acquisition module 7 and a visual detection module 4. The image acquisition module 7 is used to acquire image information of the object to be detected 9. The image acquisition module 7 is signal-connected to the visual detection module 4, and the visual detection module 4 is signal-connected to the PLC control module 5.

[0037] In this embodiment, a master control cabinet 3 is further included, and the PLC control module 5 and the visual detection module 4 are controlled by the master control cabinet 3 .

[0038] In this embodiment, a main power supply 1 for power supply is also included.

[0039] In this embodiment, a production line 2 for conveying the inspected object 9 to the inspecting station is also included.

[0040] The working steps of the utility model are as follows:

[0041] Step 1: Turn on the main power of the equipment 1, and the production line 2 starts working;

[0042] Step 2: The object 9 to be detected starts to run;

[0043] Step 3: Turn on the power of the master control cabinet 3 and turn on the visual inspection module 4;

[0044] Step 4: The PLC control module 5, the photoelectric sensing module 8, the image acquisition module 7, and the multi-level light source 6 are powered on and in standby mode.

[0045] Implementation case 1 details:

[0046] After the user turns on the main power 1, the production line 2 starts to work. Then the power of the main control cabinet 3 is turned on, the visual inspection module 4 is turned on to enter the working system, and the object to be inspected 9 starts to run. The photoelectric sensing module 8 starts to work synchronously when the object to be inspected 9 is running. The photoelectric sensing module 8 automatically detects the fabric color of the object to be inspected 9, identifies the fabric color that needs to be supplemented with light, and turns on the multi-level light source 6 for supplementary light through the PLC control module 5, and supplies the multi-level light source 6 required by the image acquisition module 7. The image acquisition module 7 completes the data acquisition of the object to be inspected 9 under the appropriate multi-level light source 6 environment.

[0047] Implementation Case 2 Details:

[0048] After the user turns on the main power 1, the production line 2 starts working. Then the power of the main control cabinet 3 is turned on, the visual inspection module 4 is turned on to enter the working system, and the object to be inspected 9 starts running. The photoelectric sensing module 8 starts working synchronously when the object to be inspected 9 is running. The photoelectric sensing module 8 automatically detects the fabric color of the object to be inspected 9. The visual inspection module 4 collects the image of the object to be inspected 9 through the image acquisition module 7. According to the data collected by the image acquisition module 7 and the photoelectric sensing module 8, the color of the fabric that needs to be supplemented with light is automatically detected. Then, the multi-level light source 5 for supplementing light is turned on through the control module 5, and the multi-level light source 6 required by the image acquisition module 7 is output. The image acquisition module 7 completes the data acquisition of the object to be inspected 9 under the appropriate multi-level light source 6 environment.

[0049] The above is only a preferred embodiment of the present invention and does not constitute any limitation to the present invention. Any simple modification, change and equivalent structural change made to the above embodiments according to the technical essence of the present invention shall still fall within the protection scope of the technical solution of the present invention.

Claims

1. A device for automatically switching light sources of a cloth inspection machine, characterized in that: It includes a PLC control module, a multi-level light source and a photoelectric sensing module. The photoelectric sensing module is used to collect fabric color information of the object to be detected. The PLC control module is used to control the switching of the irradiation light of the multi-level light source according to the fabric color information collected by the photoelectric sensing module. The multi-level light source is used to irradiate the object to be detected.

2. A device for automatically switching light sources of a fabric inspection machine according to claim 1, characterized in that: The photoelectric sensing module is a photoelectric sensing module with an amplifying circuit.

3. The device for automatically switching the light source of a fabric inspection machine according to claim 1, characterized in that: It also includes an image acquisition module and a visual detection module. The image acquisition module is used to acquire image information of the object to be detected. The image acquisition module is signal-connected to the visual detection module, and the visual detection module is signal-connected to the PLC control module.

4. The device for automatically switching the light source of a fabric inspection machine according to claim 3, characterized in that: It also includes a master control cabinet, and the PLC control module and the visual inspection module are controlled by the master control cabinet.

5. The device for automatically switching the light source of a fabric inspection machine according to claim 4, characterized in that: Also includes the main power supply used to supply power.

6. The device for automatically switching the light source of a fabric inspection machine according to claim 5, characterized in that: It also includes a production line for conveying the inspected object to the inspecting station.

Images