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What is Sensor PCB?
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Why Choose Viasion for Your Sensor PCB
The Applications of Sensor PCB
Sensor circuit boards have a wide range of applications. Take, for example, the following ones.
- Automotive safety systems
- Space exploration and satellite applications
- Biomedical sensor applications
- Industrial sensor applications
- Application of food quality control sensors
- Temperature sensor applications
- Pressure sensor application
- Motion detection sensors for security systems
- Smoke detector sensor technology
- Chemical sensor technology
The Advantages of Sensor PCB
Increased precision
Reduced size and weight
Increased efficiency
Improved reliability
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Frequently Asked Questions
As stated before, a sensor PCB is a circuit board used in various sensors.
Copper, glass-fibre reinforced epoxy and polyimide laminates are commonly used in sensor circuit boards.
There are three basic types of sensor PCB.
Analog sensor PCBs
Digital sensor PCBs
Mixed Signal sensor PCBs
The sensor devices or components on sensor PCBs detect changes in physical parameters, such as light, temperature, pressure and sound. Sensor circuit boards use electrical signals to convert data from the sensors into digital form for further processing or output.
Increased precision
Reduced size and weight
Increased efficiency
Improved reliability
There are many types of sensors used in PCB. The following are some examples.
temperature sensors
pressure sensors
flow sensors
light sensors
position/motion sensors
current/voltage sensors
optical sensors
The following are the main steps to assemble the sensor circuit board by SMT.
Step 1: Adding solder paste
Step 2: Placing components
Step 3: Reflow soldering
Step 4: Wave Soldering
Step 5: Cleaning
Step 6: Testing
Step 7: Packaging & shipping
We should consider these factors, including the form factor of the sensor, the sensor’s size, the sensor’s purpose, the sensor, the electrical characteristics of the sensor, etc.
There are components, including resistors, capacitors, diodes, transistors, inductors, switches, connectors and integrated circuits used in sensor circuit board.
To better specify control impedance on sensor PCBs, we should consider the following factors:
The sensor PCB material: Different sensor PCB materials have different electrical properties, which can affect the control impedance of the sensor system.
The power supply design: Designing a stable and efficient sensor power supply will help to ensure reliable control impedance.
The grounding scheme: A sensor system must be appropriately grounded to maintain control impedance consistency and reliability.
The sensor drive circuit: To achieve the control impedance for optimal performance, we should pay attention to the sensor drive circuit.
The following are the main steps of sensor PCB manufacturing in a simplified way.
Board cutting → Drilling → Dry film and exposure → Copper etching → Solder mask printing → Components marks printing → Surface treatment → outline Profiling → testing → Quality checking → Packaging & shipping
Thermal imaging is the most common method for monitoring the heat on sensor circuit boards. Thermal imaging involves using a camera to measure infrared radiation from an object. After that, we can calculate the object’s surface temperature through infrared radiation.
The process of mounting sensors on PCB is rather complicated. The first step in mounting PCB sensors is determining where the sensor should be placed. Additionally, PCB designers must consider how the placement of a sensor will affect their PCB’s overall design and performance. What’s more, SMT is a common way of mounting sensors on PCB.
A specialized drill bit is the best way to drill vias in a sensor PCB.
The testing methods performed on sensor circuit boards are as follows.
Electrical Test
Automated Optical Inspection
Flying Probe Testing
In-circuit Testing
Functional Testing
The following points can guide arranging the stack up on a sensor PCB.
First, consider the sensor requirements for the application.
Then, select the appropriate materials for the sensor PCB stack up after sensor requirements are determined.
Finally, optimizing the sensor stack-up is crucial to ensuring that any gaps between layers are minimized.
Although sensor PCBs have many advantages, they also have some limitations. The following are some of the main limitations of sensor circuit boards.
Limited range
Requirements on the sufficient power supply
Limited accuracy
Vulnerability
Yes, a sensor PCB is moisture-resistant.
The following points can guide you in choosing a suitable sensor PCB manufacturer.
Whether the PCB manufacturer has professional equipment and professional process management for quality control.
Whether the manufacturer has many years of experience in the industry.
Whether the manufacturer’s promises to customers can be fulfilled.
Review the feedback of the manufacturer’s previous customers.
If you have doubts about choosing the suitable sensor PCB for your application, please get in touch with us, and our engineers will provide you with technical support. We will try our best to offer sensor circuit boards which satisfy your requirements.
You can follow the manufacturer’s instructions to install a sensor PCB. However, it would be best to prepare for cleaning and drilling holes.
The most common problems with sensor circuit boards include design flaws, poor manufacturing, corrosion caused by environmental conditions, etc.
