How to define the term Proximity Sensor & its Different Types?

proximity sensor

The focus of this article is to define the term proximity sensor. If you are the kind that loves technology and everything that comes with it, then, you should give this article a read. A proximity sensor is an electromagnetic sensor that detects the presence of an object that falls within its predefined vicinity. Some folks in the tech community prefer to use the term as “electronic sensor.” Whichever word you decide to use is fine because both names speak of the same thing. The mere fact that it is an electromagnetic sensor implies that it does not need to have physical contact with an object before it detects its presence.

It works using the principles of electromagnetic radiation.  A sensor is a small object attached to a device (mostly mobile phones) at any defined position from where it releases electromagnetic radiation. It is with this radiation that it detects an object within its predefined environ or vicinity. As the electromagnetic radiation is released, it passes through the field (space) in front of it in the bid of finding an object obstruction in its path. The kind of object you want to detect is what determines the types of proximity sensors that will be used. Once there is a change in the (electromagnetic) field in which the radiation passes through, the sensor knows that there is an object in front of it. This is why your phone goes off when your hand or finger moves over the sensor, or when you place your phone close to your ear during a phone, and it goes off. But, when you take the phone off your ear, it comes on again. Some other proximity sensors use light and sound.

proximity sensor

The reason why your phones off is this: your phone is placed in a position that allows your ear to fall within the range of being detected by the sensor. The application of this is that it prevents accidental touching of your phone’s screen during phone calls. With this few information, you are now acquainted with proximity sensor basics. The proximity sensor has a long lifespan. Why? It does not have any form of contact with the object it senses. Where there is no contact, there is no friction; where is no friction, there is no wear and tear; and, where there is no wear and tear, there is no reduction in lifespan.

Now that the question “what is proximity sensor” has been answered, the remaining portion of this article will list the various types of proximity sensors and their usefulness. Note that some sensors are best suited for detecting a particular object than others.

Different types of Proximity Sensor

The different types of proximity sensor include-

1- Inductive Type

Best for detecting metallic objects

2- Capacitive Type

Best for detecting non-metallic (plastic) objects, but can be used for metallic purposes as well

3- Magnetic Type

Best for detecting magnets.

There are other types of proximity sensors. Examples include; photocell, radar, sonar, infrared, Doppler effect, etc.

What is a Limit Switch & How does it work?

Limit Switch

A limit switch is a mechanically made device that has an actuator, which senses the pressure of any moving object that moves towards it.  In electrical engineering, its operation occurs when there’s a movement of a machine or existence of an object.

When actuated, these switches can be used to energize or de-energize an application. In an electrical connection, they make or break it when there’s an object in contact with the actuator. You can find them in residential and industrial markets.

Limit Switches act as some sensors that detect existence and absence. Precisely, mechanical limit switches are mechanically activated. This automatic activation means they have some knob, lever or plunger that’s physically activated when connected with another object.

When the object comes into contact with the actuator switch, it eventually moves the actuator to the ‘’limit’’ when there’s a state of change within the connections. There are other variables of existing switches such as light sensors, electric switches, and others.

How does a Limit Switch Work?

Its working principle acts like this. A Single Pole Double Throw (SPDT) switch which only generates a single input that can connect and switch between both outputs. It means there’s one and two input terminals.

The Normally Open contact, NO, is always open when the plunger is free. The Normally Closed contact, NC, is closed when the plunger is free and COM is common.

A plunger is a mechanism or part of a device that plunges or thrusts movements.

NO will generally be open to COM. On the other hand, NC opens to COM.

There’s a connection between C and NC and NO disconnected when there’s no pressing in the plunger.

There’s a connection between C and NO and a when the plunger is pressed there’s a disconnection.

Uses of Limit Switch

A limit switch is merely a switch mounted on specific locations to be actuated by an object instead of a human being. Some of the primary functions of a limit switch are:

1- Counting

2-Detecting a travel limit and positioning.

3- Speed Detection

4- Detecting presence or absence

5- Within the residential homes, limit switches are in the most common appliances such as the refrigerator. When the electromechanical device turns the light on inside the fridge is opened. In this situation, when the limit switch is depressed, the light will turn off.

6- In the industries, limit switches are used in the assembly and actuated by the movement of a machine part or the presence of an object. The limit switch activator is installed with different options such as plunger type, roller and more.

7- Additionally, they are used in safety equipment such as solenoid locking and key operated interlocks.

Types of Limit Switches

The performance of a limit switch will depend on some factors. They include a mounting method, size, force capacity of the switch and the stroke rate used during the operation. It’s essential for the limit switch rating to match its intended use. The major types of limit switches used in the industries are:

1- Snap Switches

Used in an application that requires basic contact parameters. It does or doesn’t need an operator.

2- Miniature Enclosed Reed

This limit switch is formed from die-cast Zinc; it’s also known as Type XA. It’s suited for applications that require elevated environmental stresses.

3- Heavy Duty Precision Oil-Tight

Also called the type C limit switch, it’s very reliable due to its long mechanical and electrical lifespan.

4- Heavy Duty Oil Tight and Foundry

The heavy duty oil tight and foundry is majorly used in factories and mills.

5- Gravity Return

Generally used in the production line and conveyor operations involving small light components. There are different varieties such as the lever type, roller-type, and roller type.

Five Benefits of buying Automation Products Online

Benefits of buying Automation Products Online

The Internet has caused radical changes in our shopping behaviors. Many people are nowadays buying automation products online because of the resultant benefits.
It is by far gaining popularity compared to the conventional method; physically going into stores to make purchases.
What are the benefits of buying automation products online? And why has it gained popularity over the last couple of years?

Advantages of buying Automation Products Online

Well, here are five critical benefits for buying automation products online that you wouldn’t want to miss.

1- Convenience Buying

By using the online platform to buy automation products, you will have access to international sellers with less hassle. Where else can you buy your favorite products at the comfort of your house?
Day or night at the convenience of your PC and internet, you can place your orders online. The platform reduces the queuing struggles and challenges.
No waiting time for the next customer to be served. Once you are at your vendor’s website, you can place your order, and your delivery will be ready on payment. You can buy your preferred automation products in minutes.

2- An Easy Way to Shop

Online shopping will reduce your effort to search the best automation products in the market. It will reduce your task to use the online shopping website. And select the catalog option to find your products.
The method is easy and simple for every person. Unless you aren’t connected to the internet, buying industrial automation products online is an easy way to shop.
Sellers could offer the shipping of the products at no charges. Or you incur less shipping charges.
You’ll not only have experienced an easy way of doing shopping, but you’ll also save time.

3- An Easy Way to Compare Prices

When shopping online or using the conventional retail method, we mostly check two things. Prices and quality of the products offered. The online platform has it all.
It can help you access the consumer reviews and prices comparisons of all automation products in the market. Ratings and reviews will help you get the best automation products at a reasonable price.

4- Offers Variety of Products

Online shopping offers a variety of products and brands more than other buying options. You’ll have varieties of products to choose from.
Latest and the best automation products are available online before reaching other markets.
Buying automation products online provides you with the opportunity of reaching international retailers. There are no trade barriers online and geographical limitations.
You can find the variety of products that are not locally available online. It is easy to find the best automation products without spending on the airfare.

5- Fair Prices

Better prices when you are buying automation products online are almost guaranteed. The products will be sent directly to you as the final user from a retailer, wholesaler or manufacturer.
The middlemen are not involved in the transactions. And so are the storage costs. Since sellers save on their prices, they pass the benefits to final consumers. This adds to the list of benefits of buying automation products online.
Many websites that sell automation products online also offer price discounts; to be competitive over their rivals in the market. This helps you to acquire products online at fair prices.

“Buying automation products online is the most convenient, easiest and cheapest method in the market. You can be assured to get quality products; at any time you need them. It’s up to you to make the right call.”

How to buy the best Servo Motors Online in India?

Best Servo Motors Online

Buy the best Servo Motor Online in India

Having a company in India near urban areas like Delhi NCR, Mumbai, Chennai, Bengaluru, Kolkata, Chennai, Pune, Jaipur, Hyderabad, and Ahmedabad gives one an opportunity to get all the best brands under one rooftop from confided in Servo Engine distributors. You can acquire Servo Engine from substantial Servo Engine merchants in India. When you purchase Servo Engine online in India, don’t pass up the appealing arrangements that spring up once in a while with each thing. You don’t need to stress over the validity of our items as we store from best Servo Engine wholesalers who know the best. If you buy Servo Engine at our website, you will encounter the simplicity of shopping. And furthermore get the best Servo Engine costs.

Buy the best Servo Motors Online

Why buy Servo Motor on our Online Site?

Our services in online purchasing are, and that is why many prefer online shopping to other methods in our sites here in India. Besides prices being very affordable, online shopping gives a customer a chance to choose from a variety type of Servo Motors and the best. When you decide to buy a Servo Motor online in our site here India, you should be confident and assured you will get the best quality types available.

Types of Servo Motor Online

The various types of Servo Motor include the High Torque Bipolar Stepper Motor, the Medium Torque Unipolar Stepper Motor and the Bipolar Stepper Motor (16PU-M202).

Benefits of buying the best Servo Motor Online in India

1)  Purchasing steps are easy thus leading to high-speed operations.

2) Available to both the local Indians and the international countries.

3) Shopping online also basically helps you to shop without any pressure of crowds from other customers.

4) Lastly, if you buy online on our Indian website, you will be able to compare the prices of a variety of Servo Motors helping you to choose the best motor at an affordable price.

To get our products, follow the easy payment procedures and get your product instantly for your consumptions.

Accommodation, the comfort is the greatest liven. There are no lines to hold up in or purchase partners to look out for to assist you with your buys, and you can do your shopping in minutes. If you buy Servo Engine at our website, you will encounter the simplicity of shopping. And furthermore get the best Servo Engine costs. Online shops offer us the chance to shop every minute of every day, and additionally compensate us with a ‘no contamination’ shopping knowledge. Downloadable things bought online to dispense with the requirement for any material merchandise whatsoever, also, which helps the earth!

Better costs, shoddy arrangements, and better rates are accessible online because items come to you coordinate from the maker or dealer without the mediator. Numerous online shops offer markdown coupons and refunds too. Aside from this, online shops are possibly required to gather a business assess if they have a physical area in our state, regardless of whether we purchase from a store over the world.

What are the benefits and Uses of AC Drives?

benefits of ac drives

AC drives usually convert, and varying frequencies of a voltage supplied to the AC Induction Motor.

Benefits of AC Drives

AC Drives used in any application in which there is mechanical hardware controlled by engines; the drives give incredibly accurate electrical engine control, with the goal that engines paces can be increased and slowed down, and kept up at velocities required.  

Here are some additional benefits of AC Drives:

1). Starting Current

When an air conditioner engine is begun ‘’over the line” it takes as much as seven-to-multiple times the engine full-stack current to begin the engine and the load. This current flexes the engine windings and produces warmth which will after sometime lessen the life span of the engine.

A flexible speed air conditioning drive begins an engine at zero recurrences and voltage ‘’manufacture” it charges the engine windings which commonly takes 50%-70% of the engine stack current. Extra present over this dimension is reliant upon the associated load, the increasingly speed rate and the speed as well.

The generously diminished beginning to expand the life of the air conditioner engine when contrasted with the start of over the line. The client compensation is in less mileage on the engine rewinds, and thus this broadens the engine life.

2). Decreased Power Line Disturbances

Starting an AC engine over the line, and the ensuing interest for seven-to-multiple times the full current puts a gigantic deplete on the power appropriation framework associated with the drive.

Ordinarily, the supply voltage hangs, with the abundance of the list being subject to the measure of the engine and the limit of the conveyance framework. These voltage drops can cause delicate hardware associated with a similar appropriation framework to trip disconnected because of the low voltage.

Things, for example, PCs, sensors, vicinity switches, and contractors are voltage touchy and, when exposed to a substantial AC engine line began close-by, can drop out. Utilizing an Adjustable Speed AC Drive wipes out this voltage hang since the engine is started at zero energy and increase.   

3). Lower Power Demand on Start

If control is relative to current-times-voltage, at that point control expected to begin an AC engine over the line is fundamentally higher than with an Adjustable Speed AC Drive. These are genuine just at the start since the ability to run the engine at load would be equivalent in any case on the off chance that it settles speed or variable speed. The issue is that some dispersion frameworks are at their limit, and request factors putting on mechanical clients, which charges them for floods in power that could victimize different clients or assessment the conveyance framework amid pinnacle periods. These interest elements would not be an issue with an Adjustable Speed AC Drive.  

4). Controlled Acceleration

An Adjustable Speed AC Drive begins at zero speed and quickens easily on a client movable slope. Then again, an AC engine started over the line is a colossal mechanical stun both for the drive and associated stack. This stun will, after some time, increment the mileage on the associated load, just as the AC engine. A few applications, for example, packaging lines, can’t be begun with drives over the range (the item on the packaging line), yet should be begun void to avoid breakage.

5). Customizable Operating Speed

Use of an Adjustable Speed AC Drive empowers advancing of a procedure, making changes in a method, permits beginning at diminished speed, and allows remote modification of speed by the programmable controller or process controller.

6). Flexible Torque Limit

Use of an Adjustable Speed AC Drive can shield apparatus from harm, and ensure the procedure or item. A precedent would be a machine stick. With an AC engine associated, the drive will keep on endeavoring to pivot until the engine’s over-burden gadget opens (because of the unreasonable current drawing because of the substantial load). An Adjustable Speed AC Drive, then again, can be set to restrict the measure of torque, so the AC engine never surpasses this limit.

7). Controlled Stopping

Just as vital as controlled speeding up, controlled halting can be essential to decrease mechanical mileage – because of stuns to the procedure or loss of item because of breakage.

8). Vitality Savings

Centrifugal fan and siphon loads worked with an Adjustable Speed AC Drive diminishes vitality utilization. Divergent fans and siphons pursue a variable torque stack profile, which has driven relative to the 3D shape of speed and torque changing corresponding to the square of velocity. All things considered, if the speed of the fan slicing down the middle, the drive expected to run the fan at load is cut by a factor of eight (1/2)3 = 1/8. Utilizing a settled speed engine would require some mechanical throttling gadget, for example, a vane or damper. However, the reality remains that the drive would at present be running full load and full speed (full power). Vitality funds can be adequate to pay back the promoted expense in a matter of several years (or less), contingent upon the span of the engine.

9). Turn around Operation

Using an Adjustable Speed AC Drive takes out the requirement for a switching starter since the yield stages to the engine can change with no mechanical gadgets. The end of a switching starter dispenses with its upkeep cost and diminishes board space.   

10). Removal of Mechanical Drive Contents

Using an Adjustable Speed AC Drive can kill the requirement for costly mechanical drive parts, for example, gearboxes. Since the AC Drive can work with a constant variable speed, it can convey the low-or fast required by the heap, without a speed-expanding or decrease gadgets between the engines.

What are the uses of AC Drives?

When buying an engine, it’s regularly asked which innovation is better, AC or DC, yet the truth of the matter is that it is application and cost subordinate that matters.

There are two types of AC drives-

a). AC Motors

b). DC Motors

1). Air Conditioning Motors

Air conditioning engines are profoundly adaptable in numerous highlights including speed control (VSD – Variable Speed Drives) and have a lot bigger introduced base contrasted with DC engines, a portion of the critical focal (advantages) points are:

-Low power request to begin

-Controlled increasing speed

-Customizable operational speed

-Controlled beginning current

-Flexible torque limit

-Decreased electrical cable aggravations

The present pattern for VSD is to include more highlights and programmable rationale control (PLC) usefulness, which are points of interest for the accomplished utilized, however, require more prominent specialized aptitude amid support.

Examples of AC engine include:


In this sort of engine, the turn of the rotor synchronizes with the recurrence of the supply current, and the speed stays steady under shifting burdens, so is perfect for driving gear at a consistent pace and are utilized in high exactness situating gadgets like robots, instrumentation, machines and process control.

Acceptance (Asynchronous)

This sort of engine utilizes electromagnetic enlistment from the attractive field of the stator twisting to create an electric flow in the rotor and subsequently Torque. These are the most well-known kind of AC engine and vital in the industry because of their heap limit with Single-Phase enlistment engines being utilized principally for littler burdens, as used in household machines though Three-Phase acceptance engines are being used more in modern applications including like blowers, siphons, transport frameworks, and lifting gear.

2). DC Motors

DC engines were the primary kind of engine generally utilized and the frames (engines and drive) initial costs will, in general, be commonly not as much as AC frameworks for low power units, yet with a higher power, the general upkeep costs increment and would contemplating. The DC Motors speed can be controlled by fluctuating the supply voltage and are accessible in a full scope of tensions. The most popular types are 12 and 24V, with advantages of:

-Simple establishment

-Speed command over a wide range

-Snappy Starting, Stopping, Reversing and Acceleration

-High Starting Torque

-Direct speed-torque bend

DC engines are generally utilized and can conventional from little instruments and machines, through to electric vehicles, lifts, and cranes.

There are two types of DC Motors:

1- Brushed

These are the more conventional sort of engine and using in cost-touchy applications, where the control framework is generally straightforward, for example, in purchaser applications and progressively underlying modern hardware, these kinds of engines can separate as:

  • Arrangement Wound This is the place the field winding is associating in arrangement with rotor winding, and speed control is by differing the supply voltage, anyway, this sort offers poor speed control, and as the torque to the engine increment, at that point, the speed falls. Applications incorporate car, derricks, lifts, and cranes as it has a high beginning torque.   
  • Shunt Wound This sort has one voltage supply, and the field winding is associated in parallel with the rotor winding and can convey expanded torque, without a decrease in speed by extending the engine currently. It has a medium dimension of beginning torque at a steady rate, so reasonable for applications incorporate machines, vacuum cleaners, transports, and processors.   
  • Compound Wound This is an aggregate of Series and Shunt, where the extremity of the shunt winding is with the end goal that it adds to the arrangement fields. This sort has a high beginning torque and runs smoothly if the heap changes marginally and using for driving blowers, variable-head diffusive siphons, rotational presses, round saws, shearing machines, lifts, and nonstop transports   
  • Lasting Magnet As the name recommends instead of a changeless magnet is utilized in applications where exact control and low torque, for example, in mechanical technology, servo frameworks.   

2- Brushless

Brushless DC Motors reduce a portion of the issues related with the more typical brushed motors (short life expectancy for high use applications) and are mechanically a lot less severe in a plan (not having brushes). The engine controller utilizes Hall Effect sensors to distinguish the rotor’s position and using this the controller can precisely control the engine through current in the rotor curls) to direct the speed. The benefits of this innovation are along life, little support and high proficiency (85-90%), while the burdens are higher beginning expenses and progressively muddled controllers. These sorts of engines commonly in speed and positional control with applications, for example, fans, siphons, and blowers, where consistent quality and toughness are required.

A case of the brushless structure is in Stepper Motors, which are mostly utilized in open-circle position control, with utilizations from printers through to modern applications, for example, rapid pick and place gear.

Brushless engines are additionally available with a criticism gadget, which permits the control of the Speed, Torque, and Position of the motor. The wise hardware control each of the three so on the off chance that more torque is required to quicken speedier to a specific speed, increasingly current is conveyed, these are Brushless Servo Motors.