[{"data":1,"prerenderedAt":35},["ShallowReactive",2],{"tags-pyroelectric-1":3},{"records":4,"total":34},[5,24],{"summary":6,"images":7,"institutionId":7,"horizontalCover":7,"siteId_dictText":8,"updateTime":9,"title":10,"verticalCover":7,"content":11,"tags":12,"cover":7,"createBy":7,"createTime":13,"updateBy":7,"cateId":14,"isTop":15,"siteId":16,"id":17,"cateId_dictText":18,"views":19,"isPage":15,"slug":20,"status":21,"uid":17,"coverImageUrl":22,"createDate":13,"cate":14,"cateName":18,"keywords":12,"nickname":23},"Why pyroelectric sensors? Looking for capacitors online purchase? is a reliable marketplace to buy and learn about capacitors. Come with us for amazing deals & information.",null,"ElectrParts Blog","2026-04-22 15:05:46","Why pyroelectric sensors?","\u003Cp>\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva; font-size: 12pt;\">\u003Cspan style=\"color: #c70a0a;\">*\u003C/span> \u003Cspan style=\"color: #808080;\">Question\u003C/span>\u003C/span>\u003C/p>\r\n\u003Ctable>\r\n\u003Ctbody>\r\n\u003Ctr>\r\n\u003Ctd width=\"1136\">\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">Why pyroelectric sensors?\u003C/span>\u003C/td>\r\n\u003C/tr>\r\n\u003C/tbody>\r\n\u003C/table>\r\n\u003Cp>\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">\u003Cspan style=\"color: #c70a0a;\">\u003Cbr />\r\n\u003Cspan style=\"font-size: 12pt;\">*\u003C/span>\u003C/span>\u003Cspan style=\"color: #808080; font-size: 12pt;\"> Answer\u003C/span>\u003C/span>\u003C/p>\r\n\u003Ctable>\r\n\u003Ctbody>\r\n\u003Ctr>\r\n\u003Ctd width=\"1136\">\u003Cspan style=\"font-family: trebuchet-ms;\">The polarization of ferroelectrics (charge per unit area) is related to temperature.When the infrared radiation is irradiated onto the surface of the ferroelectric sheet which has been polarized, the temperature of the sheet is raised, the polarization thereof is lowered, and the surface charge is reduced, which is equivalent to releasing a part of the electric charge, so it is called a pyroelectric type sensor.\u003C/span>\u003C/td>\r\n\u003C/tr>\r\n\u003C/tbody>\r\n\u003C/table>\r\n\u003Cp>\u003Cspan style=\"font-size: inherit;\">\u003Cbr />\r\n\u003C/span>\u003C/p>\r\n\u003C/div>\r\n\t\t\t\t\t\t\u003Cdiv class=\"clear\">\u003C/div>\r\n\t\t\t\t\t\t\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t\r\n\t\t\t\t\t\t\u003C!-- clear for photos floats -->\r\n\t\t\t\t\t\t\u003Cdiv class=\"clear\">","pyroelectric,sensors","2026-04-22 01:43:52","4d7f472a17ef876377d",0,"2028706543895019522","ac6a2a5122ad19e5596","QUESTIONS & ANSWERS",394,"why-pyroelectric-sensors",1,"","Admin",{"summary":25,"images":7,"institutionId":7,"horizontalCover":7,"siteId_dictText":8,"updateTime":26,"title":27,"verticalCover":7,"content":28,"tags":29,"cover":7,"createBy":7,"createTime":30,"updateBy":7,"cateId":14,"isTop":15,"siteId":16,"id":31,"cateId_dictText":18,"views":32,"isPage":15,"slug":33,"status":21,"uid":31,"coverImageUrl":22,"createDate":30,"cate":14,"cateName":18,"keywords":29,"nickname":23},"What is the principle of a pyroelectric sensor? Looking for capacitors online purchase? is a reliable marketplace to buy and learn about capacitors. Come with us for amazing deals & information.","2026-04-22 14:48:40","What is the principle of a pyroelectric sensor?","\u003Cp>\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva; font-size: 12pt;\">\u003Cspan style=\"color: #c70a0a;\">*\u003C/span> \u003Cspan style=\"color: #808080;\">Question\u003C/span>\u003C/span>\u003C/p>\r\n\u003Ctable>\r\n\u003Ctbody>\r\n\u003Ctr>\r\n\u003Ctd width=\"1136\">What is the principle of a pyroelectric sensor?\u003C/td>\r\n\u003C/tr>\r\n\u003C/tbody>\r\n\u003C/table>\r\n\u003Cp>\u003Cspan style=\"font-family: 'Trebuchet MS', Geneva;\">\u003Cspan style=\"color: #c70a0a;\">\u003Cbr />\r\n\u003Cspan style=\"font-size: 12pt;\">*\u003C/span>\u003C/span>\u003Cspan style=\"color: #808080; font-size: 12pt;\"> Answer\u003C/span>\u003C/span>\u003C/p>\r\n\u003Ctable>\r\n\u003Ctbody>\r\n\u003Ctr>\r\n\u003Ctd width=\"1136\">\u003Cspan style=\"font-family: trebuchet-ms;\">The principle is that spontaneous polarization is generated because the crystal structure does not coincide with the center of gravity of the positive and negative charges in some directions.The direction of the spontaneous polarization vector points from the center of gravity of the negative charge to the center of gravity of the positive charge. When the temperature changes, it causes the relative displacement of the center of gravity of the positive and negative charges in the crystal structure, causing the spontaneous polarization to change.\u003C/span>\u003C/td>\r\n\u003C/tr>\r\n\u003C/tbody>\r\n\u003C/table>\r\n\u003Cp>\u003Cspan style=\"font-size: inherit;\">\u003Cbr />\r\n\u003C/span>\u003C/p>\r\n\u003C/div>\r\n\t\t\t\t\t\t\u003Cdiv class=\"clear\">\u003C/div>\r\n\t\t\t\t\t\t\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t\r\n\t\t\t\t\t\t\u003C!-- clear for photos floats -->\r\n\t\t\t\t\t\t\u003Cdiv class=\"clear\">","pyroelectric,sensor","2026-04-22 01:43:42","47f9148c856a4566993",307,"what-is-the-principle-of-a-pyroelectric-sensor",2,1776841548122]