PASSIVE SURFACE WAVE SENSOR

• Main Authors: SEIFERT, FRANZ, RUFFEL, CLEMENS, BULST, WOLF-ECKHART, MULLER, FOLKHARD, REINDL, LEONHARD
• Format: Patent
• Language: English; Korean
• Published: 15.09.2000
• Edition: 7
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; BASIC ELECTRONIC CIRCUITRY; CALCULATING; COMPUTING; COUNTING; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; ELECTRICITY; HANDLING RECORD CARRIERS; IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; PHYSICS; PRESENTATION OF DATA; RADIO DIRECTION-FINDING; RADIO NAVIGATION; RECOGNITION OF DATA; RECORD CARRIERS; RESONATORS; TESTING

본 발명은 측정된 값 결정을 위한 수동 표면과 센서에 관한 것으로, 여기서, 그 측정된 값은 측정위치 질문소자(1)로부터 무선에 의해 전송되며, 그것은 질문펄스로서 센서소자(5, 15)로 무선에 의해 에너지를 전송한다. 본 발명에 따른 이 표면파 센서는 접촉하지 않고 측정된 값을 습득하는데 적당하고, 표면파 장치는 센서소자이고 표면파 기준소자는 위상 판별 및/또는 전파시간 측정에 제공된다. 추가의 개선책으로서, 치프된 전송신호를 가지고 동작되며 치프된 반사기를 가지는 센서가 설명되며, 여기서는 그 장치내에 기준소자를 대신하여 기준기능이 있다. 치프된 기능을 가지도록 설계된 센서는 다른 물리적이거나 유사한 변수의 측정을 위해 긴급히 온도 보상된 센서(제12, 13도)의 특징을 가진다. In a passive surface wave sensor for measured value determination, a measured value is transmitted by radio from a remote measuring location to an interrogation device, which transmits energy by radio to a sensor element as an interrogation pulse. The surface wave sensor is suitable for contactless measured value acquisition. A surface wave configuration is the sensor element and a surface wave reference element is provided for phase discrimination and/or propagation time measurement. As a further development, a sensor operated with chirped transmitting signals and having chirped reflectors is provided, in which the configuration has a reference function in place of the reference element. A sensor constructed in such a way that it has a chirped function has the characteristics of an imminently temperature-compensated sensor for measuring other physical or similar variables.