Questions tagged [automation]

Automation or automatic control, is the use of various control systems for operating equipment such as machinery, processes in factories, boilers and heat treating ovens, switching in telephone networks, steering and stabilization of ships or aircraft and other applications with minimal or reduced human intervention

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42 views

Advice needed for a final year project on wheelchair automation and control

My project partners and I have been trying to design a wheelchair for people with neuro-degenerative diseases. I know this has been done in the past, however we are using a different approach. We are ...
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47 views

How to detect boiling of some kind of solution digitally? [closed]

Let's say we have a 30 percent salt with water solution and it will boil at 97 degrees C, after some times of boiling, the concentration of the solution will be denser (let's say 40 percent) and ...
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41 views

Advice for Switching High Current Motor (Relay vs. SSR vs. Mechanical Switch)

I'm working on automating an irrigation system which has a large well pump that uses 24-32 volts, directly from a solar array. This was previously switched by a light switch manually, but after my ...
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20 views

STEP7 MICROWIN PLC Ladder Diagram

I draw like the first figure in the program, but when I save the program it automatically becomes the second shape. Do the two mean the same thing?
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29 views

lyapunov function derevation

hi could you please help me to know how did they find the derivative of V lyapunov function
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40 views

Automation Control Cabinet Isolation

I`m designing a control cabinet with a 60A output demand for heaters. The on/off switching of the heater will be done through a 24V/80A contactor(relay). The customer wants the main switch on the door....
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1answer
60 views

Motorized rotary switch

Motorized potentiometers are easy to find and often used e.g. in music studio equipment, but I could need a similarly motorized rotary switch for a project. I am either searching for the wrong term (...
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1answer
43 views

AC to DC conversion using without neutral

I have a project to replace my wall switch with my smart switch which can be controlled by ESP32. Needed to use AC to DC conversion to get 3.3V from 240V/50Hz. Some of the walls have only phase and ...
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26 views

Smarten up dumb device: remotely control 2 TACT switches and read 5 LEDs via WiFi

Got a "dumb" air cleaning thingy that won't leave the house. Now I'm forced to smarten it up since the more expensive model would have it built in but that doesn't look so nice according to others... ...
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33 views

Discrete time state space matrices for LQR tracker

How do we find the F(T) and G(T) matrices in this digital LQR tracker example? Here is the question from a control systems engineering textbook: And here is the solution: And here are the ...
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2answers
210 views

Open source IO-Link

I have been looking at designing a solution around an IO-link master. Does the IO-link Consortium allow for open source implentations of both the master and slave? The documents online seem to give ...
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40 views

State transition graph for a table with a whole column with don't cares

I have this state transition table and I want to draw the state transition graphs Didn't have problems until I reached the last column with the state 11 where the whole column consists of don't cares ...
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1answer
41 views

Learning process automation starting from general engineering background [closed]

I'd like to study process automation by myself, could you suggest a good entry-level book to start with? I have engineering college math level and I remember a bit of Laplace transforms to model ...
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64 views

Automatic watt/volt/amp switch

Google has failed me so I'm asking here. I am looking for an automatic switch, which will change state depending on the number of Watts/Volts/Amps flowing through the circuit. As an example: When ...
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67 views

How do I make water tank control circuit?

I would like to make electronic circuit to control water tank. Its works expected as below: Once water inside the tank is lower than its minimum level, then the mechanical sensor A will trigger to ...
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1answer
50 views

Arduino AC Motor Control and Automation? [closed]

My question is about the automation of single phase AC motors. I am aware that I can purchase TRIAC controllers with manual knobs or even 0-10V control inputs. I am new to the world of AC ...
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1answer
37 views

4-20mA PLC analog output ground referencing for other devices

I'm currently using a PLC to control an induction heating coil. I'm using a chinese induction driver that allows 4-20mA PID input. This device runs off standard australian 230v AC 50hz. I've ...
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2answers
62 views

Tektronix TDS3000 series max trigger rate

So I am making a testing stand for some equipment and I am using an old TDS3034C Tektronix scope for most of my measuring purposes. I've connected it to the computer via Ethernet and using PyVisa to ...
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2answers
140 views

Using PID relay to drive multiple contactors

I am a physicist by training but have been tasked with designing a heating controller box for a custom application that will be used in an industrial setting. I would like to make sure that I am ...
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40 views

Circuit breaker wiring: put source current on side marked with X or side with switch? [duplicate]

I am trying to wire an electrical panel in a standard manner. I have several automation devices that take 120 Vac power. In order to protect them, I have purchased a 2-pole circuit breaker, Phoenix ...
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1answer
112 views

Switching 400V motor with 5V

I'am trying to make an automatic irrigation system using an Arduino, a moisture meter and a water pump. The issue is that I can't figure out whether there is some relay/contactor type component that ...
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2answers
533 views

Motor with two endstops using limit switches

I have a circuit where two limit-switches to be wired with motors to do the following functionality. It is to be used in a remotely placed device so that the intervention of microcontroller on the ...
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1answer
36 views

Using selector switch to engage only one set of valves

Can you have a selector switch engage one set of directional valves on a machine that can have 2 automated cart dampers which share a motor? Basically the first position on the switch means no set ...
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1answer
237 views

AC servo ASDA-B2 modbus position control

I have a very specific question on ASDA-B2 servo driver and I hope there is someone who has hands on experience with it who can help me out. I have referred to this user manual and it is not very ...
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67 views

How to connect a device to ground using negative signal with high impedance

simulate this circuit – Schematic created using CircuitLab I have a device that enables a ground connection when I press a key on a remote control. This negative signal used to control other ...
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1answer
232 views

Reading digital wafevorms via VXI11 from the LeCroy wavesurfer 510/MS-500

I automating a test with an osciloscope via VXI11 with python's vxi11 package. I am using the remote control manual given by LeCroy. I am trying now to extract the raw Waveformdata according to page ...
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1answer
89 views

How do you set up a VFD to run a motor at 2 different speeds?

I'm already familiar with the concept of altering the frequency to change the speed of the motor. So in this scenario, I'm looking into running a pump at 40Hz (high speed) and 23Hz (low speed). This ...
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1answer
43 views

Light Barrier Sensor - clocked or non-clocked light?

I was looking for a sensor, then I caught this: https://www.di-soric.com/pt/OGU-031-P3K-TSSL-44413.html In the specs - emitted light section, it says the emitted light is "Red, Clocked", with a ...
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2answers
1k views

For SCPI programming in python, Is it necessary to install a NI-VISA back-end if you are trying to iterface with a non-National Instruments device? [closed]

[background/context] hello, I am trying to learn to automate measurement devices using SCPI commands, but instead of using Labview I decided to go with python. I have played around with SCPI commands ...
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1answer
89 views

Measuring sensor with two PLCs

Can I measure one sensor with two PLCs? I have a PLC that's part of a machine manufacturing stuff. Another PLC is part of a robotic arm that needs to grab the piece. It would be intresting to be ...
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1answer
411 views

Machine learning for floorplanning

I have an educational assignment to make an floor-planning tool. Can I use machine learning in some part of the algorithm? For example, I was reading the book Algorithms for VLSI Physical Design ...
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1answer
88 views

Safety Interlock [closed]

I'm looking to design a basic system that I believe requires a solenoid interlock. The basis of the system is a swinging gate. The gate has two positions, as you might expect - open and closed. There ...
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2answers
212 views

PLC as gateway with TCP/IP communication stack?

I'm having issues designing an architecture for communication in a vehicle. Currently a PC is connected through a switch to a series of ECUS, each one with a TCP2CAN converter. The PC has to be ...
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1answer
677 views

Command line interface for KiCAD

Is there a way to produce Gerber files from command line in KiCAD (Linux/Unix) or a tool which can do it for me? The same question for SPICE netlist and BOM xml? I need it to automate this process ...
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2answers
191 views

What is the recommended way for starting an ac induction motor with a VFD?

I am designing a control strategy for an AC(induction) 3-phase motor fan in an HVAC air handling unit for pressure control inside the ductwork. The plan is to use a PID algorithm for the pressure ...
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1answer
1k views

AC 230V Voltage Line Detection with sharp PC814 Switch Home Automation

I want to use home automation, so I am thinking of using INPUT to ESP8266 from PC814 bi-directional optocoupler for mains 230V physical switch. Using this scheme I don't have to modify my house ...
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2answers
165 views

Transfering configuration to IEDs using IEC 61850

Sorry if this is a dumb question, but since I don't have much experience with IEC 61850 compliant devices, I am having trouble creating the "big picture" of how the whole system is being configured in ...
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1answer
55 views

Turn off automatically - timer [closed]

I'm creating a simple circuit and I need it to turn on when I press a button and stay on for the time that I choose on the timer (choose the time on a potentiometer, and it needs to go from like a few ...
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1answer
969 views

Timer to start car engine

For some reasons, i'd like to start my car at some specific times (e.g. from 11:00pm to 11:10pm, then from 5:00am to 5:10am). Are there any simple ways of achieving this? I thought of Arduino but I ...
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4answers
996 views

Replace Potentiometer With Arduino Controlled Circuit

Background: I recently bought a Scr Voltage Regulator (10000w Ac110v 220v 75a) to act as a motor controller for a hobby project (Figure 1). After taking it apart, I found the Voltage Regulator is ...
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5answers
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Are there any commercially available PLC's that can compile/ download programs through an API?

My team has decided to use a PLC for controlling an industrial process that requires simple, real-time IO to external devices with minimal processing. However, we expect the exact outputs needed to ...
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5answers
1k views

Automated test for pushing a pcb mounted mini push button

We have a test that checks whether or a push button works or not, and as of now the test is done manually by hand. My question is how to do this automatically? We have considered using a solenoid to ...
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200 views

Setup of motor control with remote and limit switches

I have a need to setup a rig that will raise and lower at the press of a button. I have two 12v motors which run the two ends of a gantry (i am not worried about speed control - since I will add that) ...
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1k views

Most accurate, available way to control a stepper motor with python

I am doing a project where I am controlling a nema 17 stepper motor with a raspberry pi 3b. The raspberry pi is controlling the motor through a pyqt5 gui (python 3 is the language). I am using tb6600 ...
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1answer
41 views

Modify Taylor Digital Thermometer #3516 So that it Does Not Shutoff Automatically [closed]

I want to mount a Taylor 3516 Digital Thermometer in a remote location that can still be seen. It is inconvenient to turn the temperature indicator back on after it has automatically shutoff. Can I ...
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1answer
71 views

How do I monitor voltage on a circuit even when switched off?

Here's the situation: I have a baby. Soon, I'll have two. So I don't really like spending half an hour trying to get him to sleep and then somebody rings the doorbell, waking him up. I've already ...
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2answers
190 views

KiCAD - Automating library part creation

I started a project in EAGLE, however found that the free version limits were too restricting. I then moved to KiCAD. I am trying to create a 144 pin chip as a library component for use in Eeschema. ...
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1answer
96 views

Are the PIR sensor modules motion sensors or proximity sensors?

I wanted to make a small project in which the lights of a room can only be turned on when there is someone in the room and it will turn off in absence of any person. I thought of using PIR sensors but ...
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102 views

Industrial Control Voltages 120VAC or 24VDC

Lately I have been designing some industrialized products (Industrial Arduino / RP IO boards) for use in automation environments. I have worked in the automation field briefly when I was younger and ...
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3answers
353 views

Controlling hardware with serial port [closed]

I initially posted this in SuperUser SE Site, but it was recommended that I bring it here instead. So, here we go :) We have a 'dated' security system at the office. It is a model that was made (or ...