Camera device for machine vision

Abstract

The utility model provides a camera device for machine vision. The camera device comprises a moisture-proof sheet, a heating wire, a humidity sensor, a control module and a camera device, the moistureproof sheet is installed in front of a lens of the camera device, the heating wire is wound around the moistureproof sheet, the heating wire is connected with the control module, and the heating wire is used for heating the moistureproof sheet; the humidity sensor is connected with the control module, and the humidity sensor is used for detecting air humidity and outputting humidity data to the control module; the control module is used for controlling the heating wire to heat according to the humidity data, and the humidity sensor and the control module are both installed in the camera device. When it is detected that the air humidity is high, the heating wire is controlled to heat the moisture-proof piece, so that moisture in air cannot be condensed on the moisture-proof piece to generate dew, image collection of the camera device can be clearer, and the whole control system based on machine vision is more stable. The camera device is used in the technical field of camera devices.

Description

Technical Field

[0001] The present technical solution relates to the technical field of camera devices, and specifically to a camera device for machine vision. Background Art

[0002] Machine vision cameras, devices that capture and analyze images in real time, are widely used in industry. However, in some production workshops with high humidity, condensation can easily blur the camera lenses. This can affect image acquisition, severely impact machine vision processing, and cause problems with the entire machine vision-based control system. Therefore, preventing camera lens blur in humid conditions is a pressing research topic within the industry. Utility Model Content

[0003] The utility model provides an anesthesia plane measuring instrument to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or create conditions.

[0004] A machine vision camera device is provided, characterized in that it includes: a moisture-proof sheet, a heating wire, a humidity sensor, a control module and a camera device;

[0005] The moisture-proof sheet is installed in front of the lens of the camera device, the heating wire is wrapped around the moisture-proof sheet, the heating wire is connected to the control module, and the heating wire is used to heat the moisture-proof sheet; the humidity sensor is connected to the control module, and the humidity sensor is used to detect the air humidity and output humidity data to the control module; the control module is used to control the heating wire to generate heat according to the humidity data, and the humidity sensor and the control module are both installed inside the camera device.

[0006] Furthermore, there is a vacuum gap between the moisture-proof sheet and the lens of the camera.

[0007] Furthermore, the heating wire is a metal wire.

[0008] Furthermore, the moisture-proof sheet is a colorless and transparent glass sheet.

[0009] Furthermore, the control module includes a heating circuit.

[0010] Furthermore, the heating circuit includes: a first input terminal, a second input terminal, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a heating wire, a first capacitor, a second capacitor, a third capacitor, a first diode, a second diode, a thyristor and a first chip;

[0011] One end of the first input end is connected to an external power supply, one end of the second input end is connected to an external power supply, the other end of the first input end is respectively connected to one end of the first resistor, one end of the first capacitor and one end of the heating wire, the other end of the first resistor is respectively connected to the other end of the first capacitor and the positive electrode of the first diode, the negative electrode of the first diode is respectively connected to one end of the second capacitor, the negative electrode of the second diode, one end of the second resistor, the eighth pin of the first chip, the fourth pin of the first chip and one end of the third resistor, the other end of the second resistor is respectively connected to the other end of the second input end, the positive electrode of the second diode, one end of the third capacitor, the first pin of the first chip, one end of the fifth resistor and the cathode of the thyristor, the other end of the second resistor is respectively connected to the other end of the third capacitor, the seventh pin of the first chip and the fifth pin of the first chip, the other end of the third resistor is connected to one end of the fourth resistor, the other end of the fourth resistor is respectively connected to the other end of the fifth resistor and the second pin of the first chip, one end of the sixth resistor is connected to the third pin of the first chip, the other end of the sixth resistor is connected to the control electrode of the thyristor, and the other end of the heating wire is connected to the anode of the thyristor.

[0012] Preferably, the model of the first chip is a 555 time base circuit.

[0013] Preferably, the fourth resistor is a thermistor.

[0014] Preferably, the second diode is a voltage stabilizing diode.

[0015] Furthermore, the control module also includes an LED light, which lights up when the heating circuit is working.

[0016] The beneficial effects of this utility model include: a moisture-proof sheet is installed in front of the lens of a camera device, creating a vacuum gap between the camera device and the moisture-proof sheet to prevent the ingress of impurities. When high humidity is detected, the moisture-proof sheet is heated by controlling the heating wire to prevent moisture in the air from condensing on the sheet to form dewdrops. This allows the camera device to capture clearer images, thereby enhancing the stability of the entire machine vision-based control system. This utility model is primarily used in the field of machine vision. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the technical solution of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the technical solution of the present invention and do not constitute a limitation to the technical solution of the present invention.

[0018] Figure 1 Schematic diagram of the overall structure of the camera device;

[0019] Figure 2This is a schematic diagram of the heating circuit connection structure;

[0020] Figure 3 Schematic diagram of the control module workflow. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0022] refer to Figure 1 、 Figure 2 and Figure 3 . Figure 1 This is a schematic diagram of the overall structure of the camera device. Figure 2 This is a schematic diagram of the heating circuit connection structure. Figure 3 It is a schematic diagram of the control module workflow.

[0023] Machine vision involves acquiring image information through cameras or other sensors and processing and analyzing it through computer technology to achieve tasks such as identifying, detecting, tracking, and measuring objects in the image. It utilizes image processing, pattern recognition, and computer vision technologies to enable computer systems to mimic the functions of the human eye and brain to identify, analyze, and understand images and videos.

[0024] In industrial production, machine vision technology can be used for automated inspection and processing, improving production efficiency and product quality. For example, in intelligent manufacturing, machine vision technology can be used to identify parts, detect defects and faults on the production line, and achieve intelligent and efficient sorting, packaging, and logistics.

[0025] Provided is a machine vision camera device, comprising: a moisture-proof sheet, a heating wire, a humidity sensor, a control module and a camera device.

[0026] Condensation occurs when the surface temperature of an object falls below the dew point of the surrounding air. The dew point is the temperature at which air cools to saturation, while maintaining constant water vapor content and pressure. Specifically, the dew point is the temperature at which water vapor in the air turns into dewdrops.

[0027] In order to prevent dew from condensing on the camera in a humid environment, in some further specific examples, a moisture-proof sheet 100 is installed in front of the lens 210 of the camera device 200, and a vacuum gap is formed between the lens 210 and the moisture-proof sheet 100 to prevent external impurities from entering the lens 210 and affecting the image effect. A heating wire is wrapped around the moisture-proof sheet 100, and the heating wire is connected to the control module. The humidity sensor inside the camera device 200 detects the ambient humidity in real time. When the ambient humidity is higher than the preset value, the control module controls the heating wire to generate heat, so that the temperature of the moisture-proof sheet increases. Since condensation only occurs on surfaces with lower temperatures, when the temperature of the moisture-proof sheet 100 is higher, water vapor will not condense on the surface of the moisture-proof sheet 100, which can make the image acquisition of the camera device clearer, thereby making the entire machine vision-based control system more stable. When the ambient humidity is lower than the preset value, the control module stops heating to avoid unnecessary power consumption.

[0028] In order to control the heating of the heating wire, in some further specific examples, the control module includes a heating circuit, and the heating circuit includes: a first input end, a second input end, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a heating wire R7, a first capacitor C1, a second capacitor C2, a third capacitor C3, a first diode D1, a second diode D2, a thyristor V1 and a first chip U1.

[0029] One end of the first input end is connected to an external power supply, one end of the second input end is connected to an external power supply, the other end of the first input end is respectively connected to one end of the first resistor R1, one end of the first capacitor C1 and one end of the heating wire R7, the other end of the first resistor R1 is respectively connected to the other end of the first capacitor C1 and the positive electrode of the first diode D1, the negative electrode of the first diode D1 is respectively connected to one end of the second capacitor C2, the negative electrode of the second diode D2, one end of the second resistor R2, the eighth pin of the first chip U1, the fourth pin of the first chip U1 and one end of the third resistor R3, the other end of the second resistor R2 is respectively connected to the other end of the second input end, the negative electrode of the second diode D2 The positive electrode, one end of the third capacitor C3, the first pin of the first chip U1, one end of the fifth resistor R5 and the cathode of the thyristor V1 are connected, the other end of the second resistor R2 is respectively connected to the other end of the third capacitor C3, the seventh pin of the first chip U1 and the fifth pin of the first chip U1, the other end of the third resistor R3 is connected to one end of the fourth resistor R4, the other end of the fourth resistor R4 is respectively connected to the other end of the fifth resistor R5 and the second pin of the first chip U1, one end of the sixth resistor R6 is connected to the third pin of the first chip U1, the other end of the sixth resistor R6 is connected to the control electrode of the thyristor V1, and the other end of the heating wire R7 is connected to the anode of the thyristor V1.

[0030] The first chip is a 555 time-base circuit, also known as a 555 timer or a 555 integrated circuit. It is a combination integrated circuit that cleverly combines analog functions and logic functions on the same silicon chip. The fourth resistor is a thermistor. When the temperature is low, the resistance of the negative temperature coefficient thermistor R4 is large. The third pin of the first chip U1 outputs a high level, triggering the thyristor V1 to turn on, connecting the heating wire R7 for heating, and thus starting the timing cycle. When the temperature of the fourth resistor R4 placed at the temperature measuring point is higher than the set value and the timing cycle has not yet been completed, the heating wire R7 is cut off after the timing cycle ends. When the temperature of the fourth resistor R4 drops below the set value, it will trigger the thyristor V1 to turn on again, connecting the heating wire R7 for heating, so that the purpose of automatic temperature control can be achieved, so that the temperature of the heating wire will not be too high, causing damage to the moisture-proof sheet and the camera device.

[0031] The working principle of the heating circuit is mainly based on the thermal effect of electric current, that is, when electric current passes through a conductor, due to the resistance of the conductor, the current does work and consumes electrical energy, thereby generating heat.

[0032] In order to know the working condition of the heating circuit, in some further specific examples, the control module is also connected to an LED light. When the heating circuit starts working, the control module controls the LED light to light up, and when the heating circuit stops working, the control module controls the LED light to go out.

[0033] Although the description of the present application has been quite detailed and particularly describes the embodiments, it is not intended to be limited to any of these details or embodiments or any particular embodiment, but should be regarded as providing a broad possible interpretation of these claims by reference to the appended claims in view of the prior art, thereby effectively covering the intended scope of the present application. In addition, the above description of the present application is based on the embodiments foreseen by the inventors, which is intended to provide a useful description, and those non-substantial changes to the present application that have not yet been foreseen may still represent equivalent changes to the present application.

Claims

1. A camera device for machine vision, characterized in that: include: Moisture-proof sheet, heating wire, humidity sensor, control module and camera device; The moisture-proof sheet is installed in front of the lens of the camera device, the heating wire is wrapped around the moisture-proof sheet, the heating wire is connected to the control module, and the heating wire is used to heat the moisture-proof sheet; The humidity sensor is connected to the control module, and is used to detect air humidity and output humidity data to the control module; The control module is used to control the heating wire to generate heat according to the humidity data. The humidity sensor and the control module are both installed inside the camera device.

2. A machine vision camera device according to claim 1, characterized in that: There is a vacuum gap between the moisture-proof sheet and the lens of the camera device.

3. The machine vision camera device according to claim 1, characterized in that: The heating wire is a metal wire.

4. The machine vision camera device according to claim 1, characterized in that: The moisture-proof sheet is a colorless and transparent glass sheet.

5. The machine vision camera device according to claim 1, characterized in that: The control module includes a heating circuit.

6. The machine vision camera device according to claim 5, characterized in that: The heating circuit includes: a first input terminal, a second input terminal, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a heating wire, a first capacitor, a second capacitor, a third capacitor, a first diode, a second diode, a thyristor and a first chip; One end of the first input end is connected to an external power supply, one end of the second input end is connected to an external power supply, the other end of the first input end is respectively connected to one end of the first resistor, one end of the first capacitor and one end of the heating wire, the other end of the first resistor is respectively connected to the other end of the first capacitor and the positive electrode of the first diode, the negative electrode of the first diode is respectively connected to one end of the second capacitor, the negative electrode of the second diode, one end of the second resistor, the eighth pin of the first chip, the fourth pin of the first chip and one end of the third resistor, the other end of the second resistor is respectively connected to the other end of the second input end, the positive electrode of the second diode, one end of the third capacitor, the first pin of the first chip, one end of the fifth resistor and the cathode of the thyristor, the other end of the second resistor is respectively connected to the other end of the third capacitor, the seventh pin of the first chip and the fifth pin of the first chip, the other end of the third resistor is connected to one end of the fourth resistor, the other end of the fourth resistor is respectively connected to the other end of the fifth resistor and the second pin of the first chip, one end of the sixth resistor is connected to the third pin of the first chip, the other end of the sixth resistor is connected to the control electrode of the thyristor, and the other end of the heating wire is connected to the anode of the thyristor.

7. The machine vision camera device according to claim 6, characterized in that: The model of the first chip is a 555 time base circuit.

8. The machine vision camera device according to claim 6, characterized in that: The fourth resistor is a thermistor.

9. The machine vision camera device according to claim 6, characterized in that: The second diode is a voltage stabilizing diode.

10. The machine vision camera device according to claim 1, characterized in that: The control module further includes an LED light, which lights up when the heating circuit is working.

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