All Questions
Tagged with electrical-engineering sensors
74
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Using Relay and contactless water level sensor to switch on or off motor pump
I have no prior experience related to electrical projects and I am having confusion about which type of relay and how to connect relay, contactless water level sensor and motor pump.
So basically I ...
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2
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242
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Measuring Pressure of a Press Machine
I am designing a heat press and need pressure feedback of the force or pressure being applied to the product.
I need to measure the pressure between to press plates on a hydraulic press.
I would like ...
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1
answer
82
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Thermal cameras - what is the practical significance of NEDT in relation to accuracy?
(Hi, I put this question on the elec eng. stack exchange and someone suggested I move it here. This question has also been edited to make the actual question clearer and fix an error).
Using accuracy ...
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vote
1
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120
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How to measure linear displacement in real-time?
I'm trying to sense the position and orientation of an object in real-time using an Arduino. I'm able to measure orientation with ease using a 9-DOF IMU.
I cant seem to figure out how to measure ...
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1
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75
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Does MEMS/Optical Gyroscope record Earth's Rotational and revolutional angular velocities
I am using a 3 axis gyroscope (Android device) to record angular velocities using a sensor data logger application.
When the device is placed stationary, the gyroscope recorded the following values:
...
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How to select a burst frequency of an Ultrasonic sensor?
I am using an Ultrasonic sensor to detect obstacles for adas applications. Is there a way to find the optimal burst frequency? experimentally or theoretically? for object detection.
How does changing ...
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1
answer
39
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How to remove ground detections of an ultrasonic sensor place in the front bumper of car? [closed]
I am working on a project to fuse the sensor information of 4 ultrasonic sensors place on the front of a car in the bumpers. The detections from the sensor would be generated not only from the ...
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2
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56
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Measuring angled surfaces with a lidar
I have been trying to create a sensor that detects when a golf club hits a golf ball. My idea was to have a lidar sensor to continuously poll the head of the golf club, and return a positive ...
2
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1
answer
236
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Passive Infrared Sensors (PIR) spectrum and reflections
I have a common PIR occupancy sensor (Lutron MS-OPS5M-WH). I am trying to get the sensor to cover an irregular-shaped room.
I could expand the field-of-view of the sensor to cover the whole room by ...
- 181
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58
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How does the number of cycles for averaging in a lock-in amplifier relate to low-pass filtering and where do I set it?
Please forgive me if I ask too many questions at once or I am too much of a rookie. I want to understand the working-principle of lock-in amplifiers (LIAs).
I understood the calculation that yields ...
1
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1
answer
101
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Ceramic pressure measurement - piezoelectrical or capacitive?
Context: I'm writing about an old industrial training facility used for a petrochemical process.
In this training facility, there is a 3-phase separator. On that separator is a pressure measurement. ...
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4
votes
1
answer
187
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allan-variance noise terms of MEMS accelerometer
Specific noise terms are given in datasheets of MEMS sensors.
In example the specification of accelerometer contains information about random walk and in some cases the bias instability.
Both ...
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2
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277
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Need help with reverse engineering a sensor
I have a pressure/temperature sensor for a vehicle, which I decided to tear apart to see exactly how the sensor works.
This sensor as designed by the manufacturer it is meant to be immersed in oil to ...
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1
vote
1
answer
46
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Design of a hydrogen and corrosion sensor query
I’m designing a hydrogen and corrosion sensor. A thin film changes resistance based on hydrogen concentration. Then the capacitance between two electrodes will change depending on substrate thickness (...
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5
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296
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What sensors/methods can be used from the roadside to determine if a truck is loaded or empty - without weighing it?
What sensor, using what physical principle, can penetrate a closed rectangular object like the trailer of a truck and tell if the space is empty or loaded?
Why is this question relevant? One of the ...
