{"id":6511,"date":"2021-04-01T09:00:46","date_gmt":"2021-04-01T17:00:46","guid":{"rendered":"https:\/\/www.linquip.com\/blog\/?p=6511"},"modified":"2023-10-01T08:39:08","modified_gmt":"2023-10-01T16:39:08","slug":"types-of-proximity-sensors","status":"publish","type":"post","link":"https:\/\/www.linquip.com\/blog\/types-of-proximity-sensors\/","title":{"rendered":"5 Types of Proximity Sensors (Application and Advantages)"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.linquip.com\/blog\/types-of-proximity-sensors\/#The_Proximity_Sensor_and_Its_Benefits\" >The Proximity Sensor and Its Benefits<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.linquip.com\/blog\/types-of-proximity-sensors\/#Types_of_Proximity_Sensors_Inductive_Proximity_Sensors\" >Types of Proximity Sensors: Inductive Proximity Sensors<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.linquip.com\/blog\/types-of-proximity-sensors\/#Types_of_Proximity_Sensors_Capacitive_Proximity_Sensors\" >Types of Proximity Sensors: Capacitive Proximity Sensors<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.linquip.com\/blog\/types-of-proximity-sensors\/#Types_of_Proximity_Sensors_Ultrasonic_Proximity_Sensors\" >Types of Proximity Sensors: Ultrasonic Proximity Sensors<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.linquip.com\/blog\/types-of-proximity-sensors\/#Types_of_Proximity_Sensors_IR_Proximity_Sensors\" >Types of Proximity Sensors: IR Proximity Sensors<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.linquip.com\/blog\/types-of-proximity-sensors\/#Types_of_Proximity_Sensors_High-end_Proximity_Sensors\" >Types of Proximity Sensors: High-end Proximity Sensors<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.linquip.com\/blog\/types-of-proximity-sensors\/#Which_Type_of_Proximity_Sensor_Is_Best\" >Which Type of Proximity Sensor Is Best?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.linquip.com\/blog\/types-of-proximity-sensors\/#How_Do_I_Select_the_Right_Proximity_Sensor\" >How Do I Select the Right Proximity Sensor?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.linquip.com\/blog\/types-of-proximity-sensors\/#Download_Types_of_Proximity_Sensors_PDF\" >Download Types of Proximity Sensors PDF<\/a><\/li><\/ul><\/nav><\/div>\n<p>A proximity sensor is a sensor able to detect the presence of nearby objects without any physical contact. There are various types of proximity sensors out there in the market, but one can say this device often performs its object presence detection task by emitting an electromagnetic field or a beam of electromagnetic radiation ( infrared, for instance), and looking for changes in the field or return signal.<\/p>\n<p><span style=\"font-weight: 400;\">If you are looking for proximity sensors, Linquip has the information you need, according to your application or requirement. We are here to help with any questions you may have about proximity sensors at Linquip. You can learn more about these sensors by visiting Linquip and reading the article &#8220;<\/span><b>What Is Proximity Sensor?<\/b><span style=\"font-weight: 400;\">&#8220;.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Are you in need of proximity sensor devices and equipment? At Linquip, you can see a wide range of <\/span><b>Proximity Sensor Products<\/b><span style=\"font-weight: 400;\"> for free. What proximity sensor equipment are you looking to buy? Linquip provides no-cost access to all available <\/span><b>Proximity Sensor Devices for Sale<\/b><span style=\"font-weight: 400;\">. Linquip also offers you the option to send inquiries to all <\/span><b>Proximity Sensor Suppliers and Companies<\/b><span style=\"font-weight: 400;\"> and receive quotations for free if you are looking for proximity sensor equipment or device prices.<\/span><\/p>\n<p>The proximity sensors are available in different categories as per their detection. Some proximity sensors are useful to detect materials; whereas some are useful to detect different environmental conditions.<\/p>\n<p>According to its object detection method, there are four widely-used types of proximity sensors, as well as some newer high-end designs:<\/p>\n<ol>\n<li><strong>Inductive Proximity Sensors<\/strong><\/li>\n<li><strong>Capacitive Proximity Sensors<\/strong><\/li>\n<li><strong>Ultrasonic proximity Sensors<\/strong><\/li>\n<li><strong>IR Proximity Sensors<\/strong><\/li>\n<li><strong>High-end Proximity Sensors<\/strong><\/li>\n<\/ol>\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-6516\" src=\"https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2021\/03\/types-of-proximity-sensors-sensors.png\" alt=\"types of proximity sensors - sensors\" width=\"500\" height=\"513\" title=\"\" srcset=\"https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2021\/03\/types-of-proximity-sensors-sensors.png 500w, https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2021\/03\/types-of-proximity-sensors-sensors-292x300.png 292w, https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2021\/03\/types-of-proximity-sensors-sensors-409x420.png 409w, https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2021\/03\/types-of-proximity-sensors-sensors-356x364.png 356w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>Before getting into any detail about different types of proximity sensors, let us quickly take a look at how they do what they do, and the benefits of using proximity sensors for environmental sensing applications.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"The_Proximity_Sensor_and_Its_Benefits\"><\/span><strong>The Proximity Sensor and Its Benefits<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Proximity sensors are sensors that detect movement\/presence of objects without physical contact and relay that information captured into an electrical signal. It can also be defined as a proximity switch, a definition given by the Japanese Industrial Standards (JIS) to all contactless detecting sensors.<\/p>\n<p>To further understand what proximity sensor is all about, we\u2019ll take a look at its features. You will see the features of proximity sensors in the following compared to the traditional optical or contact sensors to have a better sense of why we use these devices.<\/p>\n<ul>\n<li class=\"has-text-color has-background\"><strong>Contactless sensing<\/strong><\/li>\n<\/ul>\n<p>Contactless proximity sensing allows for detection without touching the object, ensuring object stays well-conditioned<\/p>\n<ul>\n<li class=\"has-text-color has-background\"><strong>Unaffected by surface conditions<\/strong><\/li>\n<\/ul>\n<p>Proximity sensors are nearly unaffected by surface colors of objects since it mainly detects physical changes<\/p>\n<ul>\n<li><strong>Suitability for wide range of applications<\/strong><\/li>\n<\/ul>\n<p>Proximity sensors are suitable for damp conditions and wide temperature range usage, unlike your traditional optical detection.<\/p>\n<p>Proximity sensors are also applicable in phones as well, be it your Android or iOS devices. It consists of simple IR technology that switches on and off display accordingly to your usage. For example, it turns off your display when a phone call is ongoing such that you wouldn\u2019t accidentally activate something while placing it near your cheeks!<\/p>\n<ul>\n<li class=\"has-text-color has-background\"><strong>Longer service life<\/strong><\/li>\n<\/ul>\n<p>Since a proximity sensor uses semiconductor outputs, there are no moving parts dependent on the operating cycle. Thus, its service life tends to be longer as compared to traditional sensors!<\/p>\n<ul>\n<li class=\"has-text-color has-background\"><strong>High speed response rate<\/strong><\/li>\n<\/ul>\n<p>Compared to switches where contact is required for sensing, proximity sensors offer a higher-speed response rate.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Types_of_Proximity_Sensors_Inductive_Proximity_Sensors\"><\/span>Types of Proximity Sensors: Inductive Proximity Sensors<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Inductive proximity sensors are contactless sensors used to only detect metal objects. It\u2019s based on the law of induction, driving a coil with an oscillator once a metallic object approaches it.<\/p>\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-6517\" src=\"https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2021\/03\/types-of-proximity-sensors-inductive-e1616556444505.jpg\" alt=\"types of proximity sensors - inductive\" width=\"500\" height=\"500\" title=\"\"><\/p>\n<p>It has two versions:<\/p>\n<ul>\n<li>Unshielded: Electromagnetic field generated by the coil is unrestricted, allowing for wider and greater sensing distances<\/li>\n<li>Shielded: Electromagnetic field generated is concentrated in the front, where sides of the sensor coil are covered up<\/li>\n<\/ul>\n<p>and comprises of 4 main components:<\/p>\n<ul>\n<li>It comprises of 4 main components as seen in the picture; Coil, Oscillator, Schmitt Trigger, and output switching circuit<\/li>\n<\/ul>\n<h3><strong>Working Principle<\/strong><\/h3>\n<ol>\n<li>An alternating current is supplied to the coil, generating an electromagnetic detection field<\/li>\n<li>When a metal object comes close to the magnetic field, eddy currents build-up, and result in coil inductance changes<\/li>\n<li>When coil inductance changes, the circuit that has been continuously monitoring, will trigger the sensor\u2019s output switch<\/li>\n<\/ol>\n<p>*Note: Even when a target is not present, inductive sensors continue to oscillate. The switch is only triggered when an object is present.<\/p>\n<figure id=\"attachment_17225\" aria-describedby=\"caption-attachment-17225\" style=\"width: 450px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" class=\"size-full wp-image-17225\" src=\"https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2021\/04\/inductive-principle.jpg\" alt=\"types of proximity sensors\" width=\"450\" height=\"390\" title=\"\" srcset=\"https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2021\/04\/inductive-principle.jpg 450w, https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2021\/04\/inductive-principle-300x260.jpg 300w\" sizes=\"(max-width: 450px) 100vw, 450px\" \/><figcaption id=\"caption-attachment-17225\" class=\"wp-caption-text\">Working principle of an inductive proximity sensor (Reference: <strong>panasonic.biz<\/strong>)<\/figcaption><\/figure>\n<h3><strong>Common Applications<\/strong><\/h3>\n<ul>\n<li><strong>Industrial usages<\/strong>\n<ul>\n<li>Production automation machines that count products, product transfers<\/li>\n<\/ul>\n<\/li>\n<li><strong>Security usages<\/strong>\n<ul>\n<li>Detection of metal objects, armory, land mines, etc.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3><strong>Advantages of Inductive Proximity Sensors<\/strong><\/h3>\n<ul>\n<li>Contactless detection<\/li>\n<li>Environment adaptability; resistant to common conditions seen in industrial areas such as dust and dirt<\/li>\n<li>Capable and versatile in metal sensing<\/li>\n<li>Considerably cheap when it comes to price<\/li>\n<li>No moving parts, ensuring a longer service life<\/li>\n<\/ul>\n<h3><strong>Disadvantages of Inductive Proximity Sensors<\/strong><\/h3>\n<ul>\n<li>Lack in detection range, averaging a max range of up to 80mm<\/li>\n<li>Can only detect metal objects<\/li>\n<li>Performance can be affected by external conditions; extreme temperatures,<br \/>\ncutting fluids or chemicals<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Types_of_Proximity_Sensors_Capacitive_Proximity_Sensors\"><\/span><strong>Types of Proximity Sensors: Capacitive Proximity Sensors<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Capacitive proximity sensors are contactless sensors that detect both metallic and non-metallic objects, including liquid, powders, and granular. It operates by detecting a change in capacitance.<\/p>\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-6518\" src=\"https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2021\/03\/types-of-proximity-sensors-a-proximity-sensor-e1616556518600.jpg\" alt=\"types of proximity sensors - capacitive\" width=\"500\" height=\"375\" title=\"\"><\/p>\n<p>Similar to inductive sensors, it consists of an oscillator, Schmitt trigger and output switching circuit. The only difference is it comprises of 2 charging plates (1 internal, 1 external) for capacitation:<\/p>\n<ul>\n<li>Internal plate connected to the oscillator<\/li>\n<li>External plate (sensor electrodes) used as the sensing surface<\/li>\n<\/ul>\n<h3><strong>Working Principle<\/strong><\/h3>\n<ol>\n<li>Capacitive proximity sensor produces an electrostatic field<\/li>\n<li>When an object (conductive\/non-conductive) approaches the sensing area, the capacitance of both plates increases, resulting in oscillator amplitude gain<\/li>\n<li>The resulted amplitude gain triggers sensor output switch<\/li>\n<\/ol>\n<p>*Note: Capacitive sensors only oscillate when the target object is present<\/p>\n<h3><strong>Common Applications<\/strong><\/h3>\n<ul>\n<li><strong>Industrial usages<\/strong>\n<ul>\n<li>Production automation machines that count products, product transfers<\/li>\n<li>Filling processes, pipelines, inks, etc.<\/li>\n<li>Fluid level, composition, and pressure<\/li>\n<\/ul>\n<\/li>\n<li>Moisture control<\/li>\n<li>Non-invasive content detection<\/li>\n<li>Touch applications<\/li>\n<\/ul>\n<h3><strong>Advantages of Capacitive Proximity Sensors<\/strong><\/h3>\n<ul>\n<li>Contactless detection<\/li>\n<li>A wide array of materials to be detected<\/li>\n<li>Able to detect objects through non-metallic walls with its wide sensitivity band<\/li>\n<li>Well-suited to be used in an industrial environment<\/li>\n<li>Contains potentiometer that allows users to adjust sensor sensitivity, such that only wanted objects will be sensed<\/li>\n<li>No moving parts, ensuring a longer service life<\/li>\n<\/ul>\n<h3><strong>Disadvantages of Capacitive Proximity Sensors<\/strong><\/h3>\n<ul>\n<li>Relative low range, though incremental increase from inductive sensors<\/li>\n<li>Higher price as compared to inductive sensors<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Types_of_Proximity_Sensors_Ultrasonic_Proximity_Sensors\"><\/span><strong>Types of Proximity Sensors: Ultrasonic Proximity Sensors<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Third on this list is ultrasonic proximity sensors, detecting the presence of objects through emitting high-frequency ultrasonic range. It does so through the conversion of electrical energy. Similarly to capacitive sensors, it can detect objects in solid, liquid, granular, or granular as well.<\/p>\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-6520\" src=\"https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2021\/03\/types-of-proximity-sensors-ultrasonic.jpg\" alt=\"types of proximity sensors - ultrasonic\" width=\"500\" height=\"405\" title=\"\" srcset=\"https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2021\/03\/types-of-proximity-sensors-ultrasonic.jpg 500w, https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2021\/03\/types-of-proximity-sensors-ultrasonic-300x243.jpg 300w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>Probably the easiest among all, it only comprises an ultrasonic transmitter and an ultrasonic receiver.<\/p>\n<h3><strong>Working Principle<\/strong><\/h3>\n<ol>\n<li>The sonic transducer emits sonic waves<\/li>\n<li>Sonic waves bounces off the object<\/li>\n<li>The wave that bounced off is then returned to the sensor<\/li>\n<li>Time that it took to emit and receive sound waves is then used to determine distance\/proximity<\/li>\n<\/ol>\n<figure id=\"attachment_17226\" aria-describedby=\"caption-attachment-17226\" style=\"width: 496px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" class=\"size-full wp-image-17226\" src=\"https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2021\/04\/how-ultrasonic-sensors-work.png\" alt=\"types of proximity sensors\" width=\"496\" height=\"266\" title=\"\" srcset=\"https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2021\/04\/how-ultrasonic-sensors-work.png 496w, https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2021\/04\/how-ultrasonic-sensors-work-300x161.png 300w\" sizes=\"(max-width: 496px) 100vw, 496px\" \/><figcaption id=\"caption-attachment-17226\" class=\"wp-caption-text\">Working principle of an ultrasonic sensor (Reference: <strong>hoffmann-krippner.com<\/strong>)<\/figcaption><\/figure>\n<h3><strong>Common Applications<\/strong><\/h3>\n<ul>\n<li>Distance measurement<\/li>\n<li>Anemometers for wind speed and direction detection<\/li>\n<li>Automation production processes<\/li>\n<li>Fluid detection<\/li>\n<li>Unmanned aerial vehicles (UAVs) for object monitoring<\/li>\n<li>Robotics<\/li>\n<\/ul>\n<h3><strong>Advantages of Ultrasonic Proximity Sensors<\/strong><\/h3>\n<ul>\n<li>Contactless detection<\/li>\n<li>Not affected by object color and transparency<\/li>\n<li>Not affected by external environmental conditions, reliable solution\n<ul>\n<li>Works well in places with extreme conditions<\/li>\n<li>Able to be used in dark environments<\/li>\n<\/ul>\n<\/li>\n<li>Low current consumption<\/li>\n<\/ul>\n<h3><strong>Disadvantages of Ultrasonic Proximity Sensors<\/strong><\/h3>\n<ul>\n<li>Limited detection range though capable of higher range as compared to inductive and capacitive sensors<\/li>\n<li>Doesn\u2019t work in a vacuum since ultrasonic sensors operate via sound waves<\/li>\n<li>Not able to measure the distance of Soft objects or ones with extreme textures<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Types_of_Proximity_Sensors_IR_Proximity_Sensors\"><\/span><strong>Types of Proximity Sensors: IR Proximity Sensors<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>IR, in short for infrared, detects the presence of an object by emitting a beam of infrared light. It works similarly to ultrasonic sensors, though instead of using sonic waves, IR is transmitted.<\/p>\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-6521\" src=\"https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2021\/03\/types-of-proximity-sensors-IR-e1616556687529.jpg\" alt=\"types of proximity sensors - IR\" width=\"500\" height=\"500\" title=\"\"><\/p>\n<p>Infrared proximity sensors consist of an IR LED that emits, and a light detector for detection of reflection. It has an in-built signal processing circuit that determines an optical spot on the PSD.<\/p>\n<h3><strong>Working Principle<\/strong><\/h3>\n<ol>\n<li>Infrared light is emitted from the IR LED emitter<\/li>\n<li>The beam of light hits the object and gets reflected back in an angle<\/li>\n<li>The reflected light will reach the light detector<\/li>\n<li>The sensor in the light detector determines the position\/distance of reflective object<\/li>\n<\/ol>\n<figure id=\"attachment_17227\" aria-describedby=\"caption-attachment-17227\" style=\"width: 640px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" class=\"size-full wp-image-17227\" src=\"https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2021\/04\/How-Infrared-Sensor-Works_thumb.png\" alt=\"types of proximity sensors\" width=\"640\" height=\"307\" title=\"\" srcset=\"https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2021\/04\/How-Infrared-Sensor-Works_thumb.png 640w, https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2021\/04\/How-Infrared-Sensor-Works_thumb-300x144.png 300w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><figcaption id=\"caption-attachment-17227\" class=\"wp-caption-text\">Working principle of an infrared proximity sensor (Reference: <strong>electricalfundablog.com<\/strong>)<\/figcaption><\/figure>\n<h3><strong>Common Applications<\/strong><\/h3>\n<ul>\n<li>Distance measurement<\/li>\n<li>Item counter; when object cuts the radiating light, it counts as one<\/li>\n<li>Security systems such as surveillance, burglar alarms, etc.<\/li>\n<li>Monitoring and control applications<\/li>\n<\/ul>\n<h3><strong>Advantages of IR Proximity Sensors<\/strong><\/h3>\n<ul>\n<li>Contactless detection<\/li>\n<li>Applicable for daytime and nighttime usages<\/li>\n<li>Secured communication through a line of sight<\/li>\n<li>Able to measure the distance to soft objects unlike ultrasound proximity sensors<\/li>\n<li>Accuracy of the infrared sensor not affected by corrosion or oxidation<\/li>\n<\/ul>\n<h3><strong>Disadvantages of IR Proximity Sensors<\/strong><\/h3>\n<ul>\n<li>Affected by environmental conditions and hard objects, implying inability for usage through walls or doors<\/li>\n<li>Requires line of sight between transmitter and receiver for communication<\/li>\n<li>Performance dips over longer distances<\/li>\n<\/ul>\n<p>See the video <a href=\"https:\/\/www.youtube.com\/watch?v=tpXW6qWoJGA\" target=\"_blank\" rel=\"noopener\">here<\/a> to learn more about these types of proximity sensors and how they are used.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Types_of_Proximity_Sensors_High-end_Proximity_Sensors\"><\/span><strong>Types of Proximity Sensors: High-end Proximity Sensors<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><strong>Photoelectric Proximity Sensors<\/strong><\/h3>\n<p>Photoelectric proximity sensors are ones that use high-end photoelectric technology. This type of it emits a light beam that\u2019s capable of detecting all sorts of objects!<\/p>\n<p>It has the following three different models; Reflective, Through-beam, and Retro-reflective. Each model offers varying light emission methods, though they are all highly efficient when it comes to distance detection.<\/p>\n<h3><strong>Magnetic Proximity Sensor<\/strong><\/h3>\n<p>Magnetic proximity sensors are proximity devices used to detect magnetic objects through their large sensing ranges. A typical one incorporates glass and metal blade, allowing for quick magnetizing!<\/p>\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-6522\" src=\"https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2021\/03\/types-of-proximity-sensors-magnetic-e1616556745286.jpg\" alt=\"types of proximity sensors - magnetic\" width=\"500\" height=\"500\" title=\"\"><\/p>\n<p>Though it merely senses magnets, it\u2019s still great for its low cost, long-range, and small dimensions.<\/p>\n<h3><strong>LiDAR Proximity Sensor<\/strong><\/h3>\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-6523\" src=\"https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2021\/03\/types-of-proximity-sensors-lidar-e1616556822278.jpg\" alt=\"types of proximity sensors - lidar\" width=\"500\" height=\"375\" title=\"\"><\/p>\n<p>LiDar, in short for Light Detection and Ranging, is a high-end sensing technology that provides excellent max detection range with fast update rates. The only main downside is the cost, where it may be too costly for the average consumer.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Which_Type_of_Proximity_Sensor_Is_Best\"><\/span>Which Type of Proximity Sensor Is Best?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">The use of photoelectric sensors is extremely effective for detecting absence or presence and is ideal for a lot of industrial purposes as well as in a variety of residential and commercial settings, especially for garage door sensors and occupant counting applications.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"How_Do_I_Select_the_Right_Proximity_Sensor\"><\/span>How Do I Select the Right Proximity Sensor?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Considerations when selecting a proximity sensor include:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Design (barrel or block).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The type of output switching (NPN or PNP).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The output function (NO or NC).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Range of detection and sensing.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Type of target detected.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">IP rating.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Type of installation (flush or non-flush).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Whether it is shielded, partially shielded, or not shielded.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Response time.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Potential applications.<\/span><\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Download_Types_of_Proximity_Sensors_PDF\"><\/span><strong>Download Types of Proximity Sensors PDF<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The PDF version of this article is available for download so you can access it whenever you want.<\/p>\n<div class=\"su-button-center\"><a href=\"https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2021\/04\/linquip.com-A-Quick-Look-at-Types-of-Proximity-Sensors.pdf\" class=\"su-button su-button-style-default su-button-wide\" style=\"color:#FFFFFF;background-color:#2D89EF;border-color:#246ec0;border-radius:12px\" target=\"_blank\" rel=\"noopener noreferrer\"><span style=\"color:#FFFFFF;padding:0px 30px;font-size:22px;line-height:44px;border-color:#6cadf4;border-radius:12px;text-shadow:none\"> Download PDF<\/span><\/a><\/div>\n<h3><b>Buy Equipment or Ask for a Service<\/b><\/h3>\n<p>By using Linquip RFQ Service, you can expect\u00a0to receive quotations from various suppliers across multiple industries and regions.<\/p>\n<p style=\"text-align: center;\"><strong><a href=\"http:\/\/linquip.com\/get-quote?utm_source=blog&amp;utm_medium=content&amp;utm_campaign=product_list&amp;utm_term=product_list&amp;utm_content=rfq\" target=\"_blank\" rel=\"noopener\">Click Here to Request a Quotation From Suppliers and Service Providers<\/a><\/strong><\/p>\n<p><em><strong>Read More On Linquip<\/strong><\/em><\/p>\n<ul>\n<li><span style=\"text-decoration: underline;\"><strong><span style=\"font-size: 10pt; 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There are various types of proximity sensors out there in the market, but one can say this device often performs its object presence detection task by emitting an electromagnetic field or a beam of electromagnetic radiation ( &#8230;<\/p>\n","protected":false},"author":5,"featured_media":32755,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","footnotes":""},"categories":[21],"tags":[],"class_list":["post-6511","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-electrical-component"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.linquip.com\/blog\/wp-json\/wp\/v2\/posts\/6511","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.linquip.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.linquip.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.linquip.com\/blog\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/www.linquip.com\/blog\/wp-json\/wp\/v2\/comments?post=6511"}],"version-history":[{"count":9,"href":"https:\/\/www.linquip.com\/blog\/wp-json\/wp\/v2\/posts\/6511\/revisions"}],"predecessor-version":[{"id":26507,"href":"https:\/\/www.linquip.com\/blog\/wp-json\/wp\/v2\/posts\/6511\/revisions\/26507"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.linquip.com\/blog\/wp-json\/wp\/v2\/media\/32755"}],"wp:attachment":[{"href":"https:\/\/www.linquip.com\/blog\/wp-json\/wp\/v2\/media?parent=6511"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.linquip.com\/blog\/wp-json\/wp\/v2\/categories?post=6511"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.linquip.com\/blog\/wp-json\/wp\/v2\/tags?post=6511"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}