This is not recommended. Most IR equipment has 24 volt and 40 - 50mA open collector outputs best used with interface drivers. Protection against voltage spikes may not be incorporated with some brands, adding another cost to the client. Better brands have spike suppression on the power supply and flywheel diodes on the outputs.

Larger companies generally hold a good level of spares. Apart from accidental damage, electrical spikes and mechanical damage should be reviewed as part of the design criteria. If the customer decides against these additional levels of protection because electrical / mechanical damage is unlikely, then so be it.

Not necessarily. The detail of the camera, does the product require high speed detection and the type of lighting need to be considered. It is likely that a more expensive item can be programmed down to do the job rather than a cheaper unit spec’d upward.

FAQ (Image Recognition)

Issues with the greatest advance in quality control ever!

Colour of the product, contrast of what you wish to detect, the time you have to pass or fail the item, is colour change likely i.e. heat, the size of the defect you wish to detect and does the part reflect light. The most common issue is incorrect lighting — either the colour direction of it, or the intensity of it.

Question 1 What are some significant issues  successful in Image Recognition?

Question 2 Can different brands of Image Recognition be changed for each other?

Question 3 What is the availability of spare parts?

Question 4 Can the Image Recognition equipment directly operate contactors?

No easy answer. In some cases, it is trouble placing the hardware in position due to heat or lack of space. In other cases, it is programming due to the highly reflective nature of the parts or the size of the defect to be detected.

Question 5 What is the major problem with setting up Image Recognition?

Speak to various companies and rely on the size of the company and the support that they give you. Lack of pre sales support may indicate lack of post sales support.

Question 6 How can we decide between one brand of IR equipment and another?

This depends on the application but almost certainly DC lighting is required. Fluorescent lighting as an example with 50Hz flicker is a poor choice. In fact, a good portion of most projects is devoted to optimizing lighting.

Question 7 What sort of lighting is best to use?

Normally yes. This depends on the make and model. Only one manufacturer we know of allows this as standard. Others have this as an extra.

Question 8 The screen is too small for the operators. Can I use a larger screen?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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