Sensor Definition and 403 Threads

Hi! (newbie here) I'm doing a experiment, very simple, in the center of a box there is a light source, a small one, and closer is a photon counter device. The challenge here, and the hard DIY part is the box. The box can not any photon get inside, nor emit any of them. At the same time it...

1. Patterns changes depend sensor is on or off, so sensor must somehow interact with atoms? 2. What is sensor, how he works/detect atoms? 3. If sensor is plugged but human dont monitor his results, what is pattern of atoms?

Hi there, I'm working on a project where I'm trying create a sensor to measure the relatively lower concentrations of O3 at ground level. The main idea is to use the unique spectral characteristics of O3, shine a UVC light (at 254nm, where the absorption cross section is the highest) through...

Please help me find websites describing easy to understand experiments discovering how little of a Conscious Observer is needed to cause wave function collapse? Is just a sensor, that "could have been" attached to a reporting device, that "could have been" looked-at by a Conscious Human...

Hi, Can I someone please explain to me, the moment behaviors of having something fixed on CG vs on Tail in a rocket? are there any benefits of having a Sensor on CG than fixed on the tail? Thank you

I wanted to understand the output of the hall sensor to detect the position of the rotor in the BLDC motor. The hall sensors are placed 120degrees apart. I downloaded one of the TI application notes and understanding it, and referring to the diagram The rotor North and South is in a single...

Hi all, I'd like to make an home-built OD600 sensor for measurement of cell concentration in suspension by Optical Density. There are several spectrophotometers in the market, indeed quite expensive, so I am interested in realizing a cheap device with standard components. Here's an example on...

See the attached figure. I used 220uF with buzzer and also tried 10uF capacitor but buzzer isn't loud enough. I don't have any 3.3pf capacitor. I used 1.1 pF instead. I also tried changing the resistance of potentiometer but still buzzer isn't sound loud enough.

I have been looking for sensors to detect DC current in the microamp range. I've been looking into hall sensors. I found an IEEE papers talking about one they designed, so I'm not too sure they're commercially available in that low of a current range. I haven't found any on DigiKey anyway. I...

I've read the NIRCam instrument uses HgCdTe imaging sensors... "JWST NIRCam has ten 2K × 2K HgCdTe detectors" https://jwst-docs.stsci.edu/jwst-near-infrared-camera/nircam-instrumentation/nircam-detector-overview I found this chart which displays the relative sensitivity of the NIRCam sensor...

Hello, I have a question. If a star tracker in space faces the sun directly then could it be possible that the sun completely burns the image sensor? To be specific we are a student satellite team (Student satellite program IIT Bombay) developing a star tracker and we don't have an exact idea...

Hello, I have the following problem and hope you can help me. I have the setup as shown in the drawing. A pipe that is flowed through, and in the middle of it another pipe, but at the end of this branch is a sensor. Initially the fluid would flow, with a temperature of 25°C. If my thought is...

I'm trying to figure out what kind of magnetic sensor is used in my wristwatch (Casio Edifice twin sensor) a d how it works. Just out of curiosity. After some research, I got some clues. So, the first thing I'd like to know is how a magnetoimpedance sensor works? How is its circuitry? Some...

Hello We have designed an optical sensor to measure glucose. But we do not have the same changes for different concentrations. What do we need to do to be able to observe different Lifetime concentrations? In our sensor test, we used phosphorescence and glucose oxidase technology. The sensor...

What I understand is that the β parameter of the npn transistor is temperature dependent. Increasing the temperature increases the collector current and hence the LED turns ON. But I don't understand the resistor arrangement.Also I can see that the diode is keeping the Base-Emitter junction in...

Hello Gentlemen, I'm not an EE engineer, yet trying to help my colleagues. I would like to get a general feeling of what could be going on. Probably trivial for some of you. Background We have a motor/torque sensor device that is measuring torque values. We get out digital signals for Torque...

It is a sensor with a fixed surface and a prescribed displacement on the opposite To remove this message error, I have tried to Increase iterations Refined mesh Applied parametric studies And some other ideas from forums However it still cannot be solved It also has a warning of MUMPS out...

At the risk of waiting hours on simulations of a sensor, I was wondering if I could use infinite element domain on COMSOL to simplify it. The first image consists of what I would like to simulate but found out that the simulation time is a huge factor as I have a lot to simulations to conduct...

Good day, all I have a K1600 motorcycle. Will an after market tire pressure sensor work on a 2014 GTL? Dealers are crazy expensive and was told today that they are on back order. After search the TPMS Sensor Guide, I've new tires ready to be mounted, but a little confused. Any help will be...

I started a project, and where I thought I has a potentiometer position feedback, best I can tell I have an eddy current position sensor, which I'm absolutely not familiar with The application is a diesel engine injector pump (retrofitting to a different engine, it was from a Komatsu V12, no, I...

Hello everyone ! I'm working with a piezoelectric cell and I need to retrieve the variation of the charge of the cell as a voltage signal. I found this circuit (a charge amplifier) with an OP Amp ( here the piezo cell is represented as the current source with the capacitor and the resistor on...

Hello everyone, I am studying abroad and I am working on a speedometer project. I am preparing to use an ultrasonic transmitter and receiver to make an ultrasonic sensor circuit, and then connect it with the single-chip microcomputer msp430 to realize the functions of speed measurement and...

Hello, I am using a Raspberry Pi with a PIR motion sensor and a Pi Camera. The idea is that the camera should take a picture every time the PIR sensor detects motion. The system works but it does not respond, i.e. take a picture, as fast as I would like if I wave my hand in front of the PIR...

Hi, I have a steel piston running below a 3-4 mm thick steel wall. I'd need to know the piston position below the wall without drilling the wall. I'm thinking to an inductive sensor but I think it will not work because it will detect all the time something in front of him (the fixed wall)...

Physics noob here. I have the cheapest FLIR sensor (80x60 px sensor). It captures Longwave infrared, 8 μm to 14 μm. It has a tiny lens (probably 1mm in diameter). Trying to add a zoom ability to this sensor. I have different DSLR lens and other optical scopes. I tried holding the tiny FLIR...

Hello people... I'm learning about ESP32-cam and I'm new to electronics, so I need some help. I want to do a project in which esp32-cam takes a picture and sends it to me, when he "sees" movement. For this, I use a pir. It has a schematic of how to do it, with an esp32-cam, a pir, and an ftdi...

Dear mechanical expert I have to realize a linear displacement system for a Hall sensor that has to slide along the central axis of a narrow cylinder and with which high intensity magnetic field measurements (1-14 Tesla) have to be made. The field is produced by a commercial vertical magnet...

I'm making a robot the will follow a black line and I need some assistance does anyone here have experience with python and line sensors.(IR) If anyone does I can elaborate on my issues more. Thanks

I got a gesture sensor module that produces a signal per event. The each signal is a set of regularly sampled readings from four photodiodes. The number of samples per event can be very different, from around 20 up to over 100, and each sample value is essentially the measured brightness...

hello all : there was this technology that i read about maybe a year ago, could it help in better technology fast and reliable method to detect corona virus in saliva or in blood ? http://web.mit.edu/degenlab/index.html http://web.mit.edu/degenlab/degenlab_techniques.html...

While searching for something else, I stumbled upon this https://robu.in/product/voltage-sensor-module/. It is idiotic to buy something like this, because a voltage divider doesn't cost more than a few cents. But what is the metallic circular component in the middle of the sensor? Some kind of...

I would like to know if this formulae i have are good enough to make calculations. My plan is to count time of each roll with Arduino.I don't have roller yet so i don't know moment of inertia.angular acceleration = radians/secounds TORQUE = moment of inertia (kg∙m2) * angular acceleration RPM =...

Hello, I have made a capacitive water level sensor. It is a parallel plate capacitor. While measuring the capacitance of my sensor, I measure 53 pF. I then leave it for couple of minutes, still conected to the meter, capacitance then rises to 54 pF. Capacitance is slowly increasing. Why is...

Hello guys, I am building a small prototype for a Coolant Dispensing System and need to measure the flow rate of water & chemical in the pipe in order to control the opening of valves downstream. Since I am building a small pilot system, I can't really spend too much money and hence I intend...

I’m new here… So go easy on me please. I need a 1.5 in-line/pigtail day/night sensor… Help?

What sensor to would i use to measure the difference in wave length periods. I want to make a rendered image of somthing that field of view that is being obstructed.

Hello everybody, I have made soil moisture sensor and it kinda works. It is a capacative sensor not resistive sensor based upon TLC555 which has a role to create square wave. Square wave is brought to a homemade capacitor. Capacitance changes with change of moisture. Output is measured voltage...

First of all: I am not a programmer, I cannot read code, only have a background in pure mathematics, am looking for a very simplified summary ("for Dummies") of the way Deep Learning and similar AI routines handle sensor data. I looked at a few articles such as...

Hi all My mainly question is about why we won't be able to detect Hydrogen as Ex. gas using IR technology sensors? Also, I'd like to know if H2 would be detected using IR senosor? I need to know what is the equivalent technology for this purpose too? Thanks Ay ElEbshihy

We are working on an IOT project in which we are trying to learn about different vibrations of using Wireless Vibration Sensor According to the manual, the wireless vibration sensor is giving the output while testing on CNC machine device 0.75, 0.71,0.69 whose SI units are in 'g'(which is...

My question is kindof related to physics, as I have an Accelerometer sensor through which I am able to get the sensor data as following: x = 192 y = 433 z = -453 I need to convert these values in such a way so that It will share Acceleration in cm or meters, And also what concept I should use...

Hi! I am working on a project (hobby basis) and with limited EE background. I wish to make a polar plot, showing the current and voltage phasors for each phase (unbalanced 3-phase, 3 wire system (IT system), se picture below.). I have obtained the following readings (instantaneous values)...

I want to model a sensor with the static behavior: y(t)=a+by_{0}(t) using a first order lag: G(s)=\frac{K}{1+Ts} However, if i try to convert this order lag in time domain and set the derivative as 0, what i get as static response is: y(t)=Ky_{0}(t)=by_{0}(t) And the a constant has...

Hello, I am a 3rd year EEE student and am working on a project that will go on to form my 3rd year dissertation. I am having trouble formulating a project idea from the guidelines. I was told I should use a strain sensor to form some kind of self sensing smart material that could be used to...

What kind of ion sensor can I use in the range 1e19to 1e22 ions/m3? (corresponds to 0.1 to 5 pascals if non ionized) Does it exist any sensor based in the charge capacity?

Hello all, I am after some advice regarding a hall sensor type air flow meter. I know from experience that most hall sensor flow meters allow a bypass of fluid around the turbine/fan. However I would like to know what would happen if this was the case of the design below. Specifications...

Hello, I am going to interface wireless frequency meter transmitter with Arduino but before starting regarding sensor, I need to test the signal strength of this sensor (at different distances) by interfacing it with Arduino, I have never been used such kind of sensor before so any suggestion...

I'm working on a DIY EFI system for automotive use. I have a question about the mass air flow sensor operation. I know they measure the volume of air passing thru them. But the question is whether that measurement needs to be corrected for air temperature or if the MAF sensor does that by...

which soft wares are used in gas sensor simulation?

Problem statement For an ultrasonic sensor (MB7380) sending 8 data BITS, no parity and one stop bit, what is the ASCII code it will give for a certain distance like 0.15 meters (0.5')? maxbotix.com/documents/HRXL-MaxSonar-WR_Datasheet.pdf#page=2 Attempt at a solution I do not know how to...