Short Communication, J Ind Electron Appl Vol: 7 Issue: 1
Magnetic Switch Detector: An Overview and Applications Magneto Resistance
Quang Tzyh Pou*
1Department of Electrical and Electronic Engineering, The Nanyang Technological University, Singapore
*Corresponding Author: Quang Tzyh Pou
Department of Electrical and
Electronic Engineering, The Nanyang Technological University, Singapore
E-mail: Pouzyh90@hotmail.com
Received date: 24 February, 2023, Manuscript No. JIEA-23-95924;
Editor assigned date: 28 February, 2023, PreQC No. JIEA-23-95924(PQ);
Reviewed date: 13 March, 2023, QCNo JIEA-23-95924;
Revised date: 21 March, 2023, Manuscript No. JIEA-23-95924 (R);
Published date: 30 March, 2023, DOI: 10.4172/JIEA.1000020.
Citation: Pou QT (2023) Magnetic Switch Detector: An Overview and Applications Magneto Resistance. J Ind Electron Appl 7:1.
Description
Magnetic switch detectors are devices that use a magnetic field to detect the presence or absence of an object. They are used in a wide range of applications, including security systems, industrial control systems, and automotive systems. In this study, we provide an overview of magnetic switch detectors, their working principle, and various applications.
Magnetic switch detectors work based on the principle of a magnetic field. The device consists of a magnetic field sensor, which generates a magnetic field [1]. When an object comes into the vicinity of the sensor, the magnetic field is disturbed, which triggers the switch. The switch can be either normally open or normally closed [2]. In the case of a normally open switch, the circuit is closed when an object comes into the range of the sensor, and in the case of a normally closed switch, the circuit is open when an object is present [3].
Types of magnetic switch detectors
There are different types of magnetic switch detectors available, including reed switches, Hall-effect switches, and magneto resistive sensors [4]. Reed switches are the simplest type of magnetic switch detectors and consist of two ferromagnetic blades enclosed in a glass envelope [5]. When a magnetic field is applied, the blades attract each other, completing the circuit.
Hall-effect switches use the Hall effect to detect the magnetic field [6]. When a magnetic field is applied perpendicular to the current flow in a conductor, a voltage is generated across the conductor. This voltage is proportional to the strength of the magnetic field, which is used to trigger the switch [7].
Magneto resistive sensors work based on the principle of magneto resistance. When a magnetic field is applied to a conductor, the electrical resistance of the conductor will change [8]. This change in resistance is detected by the sensor, which triggers the switch.
Applications
Magnetic switch detectors have various applications in different fields. Some of the applications are discussed below:
Security systems: Magnetic switch detectors are commonly used in security systems to detect unauthorized entry. They can be installed in doors and windows, and when the door or window is opened; the switch is triggered, which activates an alarm [9].
Industrial control systems: Magnetic switch detectors are used in industrial control systems to detect the position of machinery. They can be used to detect the position of valves, actuators, and other equipment.
Automotive systems: Magnetic switch detectors are used in automotive systems to detect the position of various components, including the throttle position sensor, camshaft position sensor, and crankshaft position sensor.
Medical devices: Magnetic switch detectors are used in medical devices, such as MRI machines, to detect the position of the patient. They can also be used in implantable devices to detect the position of the device [10].
Conclusion
Magnetic switch detectors are an essential component of various systems and devices. They are reliable, easy to use, and cost-effective. The different types of magnetic switch detectors available, including reed switches, Hall-effect switches, and magneto resistive sensors, provide a wide range of options for different applications. With the increasing demand for automation and control systems, the use of magnetic switch detectors is expected to grow in the future.
Refernces
- Skokov VV, Illarionov AY, Toneev VD (2009) Estimate of the magnetic field strength in heavy-ion collisions. Int J Mod Phys A 24: 5925-32
- Lin H, Penn MJ, Tomczyk S (2000) A new precise measurement of the coronal magnetic field strength. Astrophys. J. 541: L83
- Freitas PP, Ferreira R, Cardoso S, Cardoso F (2007) Magnetoresistive sensors. J Condens Matter Phys 19:165221
- Tsang C (1984) Magnetics of small magnetoresistive sensors J. Appl. Phys 55: 2226-31
- Mapps DJ (1997) Magnetoresistive sensors. Sens Actuator A Phys 59: 9-19
- Taton K, Johnson D, Guire P, Lange E, Tondra M (2009) Lateral flow immunoassay using magnetoresistive sensors. J Magn Magn Mater 321: 1679-82
- Xie F, Weiss R, Weigel R (2015) Hysteresis compensation based on controlled current pulses for magnetoresistive sensors. IEEE Transactions on Industrial Electronics 62: 7804-9.
- Alfadhel A, Khan MA, Cardoso S, Leitao D, Kosel J (2016) A magnetoresistive tactile sensor for harsh environment applications. Sensors (Basel) 16: 650
[crossref] [Google Scholar] [PubMed]
- He DF, Shiwa M (2011) An anisotropic magneto resistive sensor with set/reset field. Rev Sci Instrum 82: 094703.
[crossref] [Google Scholar] [PubMed]
- Han J, Hu J, Ouyang Y, Wang SX, He J (2014) Hysteretic modeling of output characteristics of giant magnetoresistive current sensors. IEEE Trans Ind Electron IEEE T IND ELECTRON 62:516-24
