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1. (WO2019049063) CONCENTRATION MEASURING INSTRUMENT
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Pub. No.: WO/2019/049063 International Application No.: PCT/IB2018/056810
Publication Date: 14.03.2019 International Filing Date: 06.09.2018
IPC:
G01N 29/036 (2006.01) ,G01N 29/36 (2006.01) ,G01N 29/42 (2006.01)
G PHYSICS
01
MEASURING; TESTING
N
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
29
Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
02
Analysing fluids
036
by measuring frequency or resonance of acoustic waves
G PHYSICS
01
MEASURING; TESTING
N
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
29
Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
36
Detecting the response signal
G PHYSICS
01
MEASURING; TESTING
N
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
29
Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
36
Detecting the response signal
42
by frequency filtering
Applicants:
TYCO ELECTRONICS JAPAN G.K. [JP/JP]; 5-8 Hisamoto 3-Chome Takatsu-ku Kawasaki-shi, Kanagawa 213-8535, JP
TYCO ELECTRONICS UK LTD [GB/GB]; Faraday Road Dorcan Swindon Wiltshire SN3 5HH, GB (MG)
Inventors:
TANAKA, Tsuyoshi; JP
JEONG, Heewon; JP
HASEGAWA, Kazuo; JP
Agent:
MURGITROYD & COMPANY; Scotland House 165-169 Scotland Street Glasgow Strathclyde G5 8PL, GB
Priority Data:
2017-17187607.09.2017JP
Title (EN) CONCENTRATION MEASURING INSTRUMENT
(FR) INSTRUMENT DE MESURE DE CONCENTRATION
Abstract:
(EN) Provided is a concentration measuring instrument adopting a cavity resonance method, capable of being downsized, and easily measuring a solution concentration. The concentration measuring instrument (100A) is provided with a piezoelectric vibrator (11), a temperature sensor (18), a phase comparison circuit (44), a frequency detection circuit (microcomputer 20), a PLL circuit including a drive circuit and the phase comparison circuit, and a concentration detection circuit (microcomputer 20). The temperature sensor (18) measures the temperature of the solution in a cavity of the cavity resonator (10). The phase comparison circuit (44) performs a phase comparison between a drive signal and a detection signal. The frequency detection circuit (microcomputer 20) monitors a phase comparison result from the phase comparison circuit (44) while sweeping frequencies to detect a resonant frequency of a resonant mode to be measured. The PLL circuit makes the frequency of the drive signal follow the resonant frequency detected. The concentration detection circuit (microcomputer 20) detects the solution concentration based on the resonant frequency and the temperature measurement result.
(FR) La présente invention concerne un instrument de mesure de concentration adoptant un procédé de résonance de cavité, pouvant être miniaturisé, et mesurant aisément une concentration de solution. L'instrument de mesure de concentration (100A) est pourvu d'un vibreur piézoélectrique (11), d'un capteur de température (18), d'un circuit de comparaison de phase (44), d'un circuit de détection de fréquence (micro-ordinateur 20), d'un circuit PLL comprenant un circuit d'attaque et le circuit de comparaison de phase, et un circuit de détection de concentration (micro-ordinateur 20). Le capteur de température (18) mesure la température de la solution dans une cavité du résonateur à cavité (10). Le circuit de comparaison de phase (44) effectue une comparaison de phase entre un signal d'excitation et un signal de détection. Le circuit de détection de fréquence (micro-ordinateur 20) surveille un résultat de comparaison de phase provenant du circuit de comparaison de phase (44) tout en balayant des fréquences pour détecter une fréquence de résonance d'un mode de résonance à mesurer. Le circuit PLL amène la fréquence du signal d'excitation à suivre la fréquence de résonance détectée. Le circuit de détection de concentration (micro-ordinateur 20) détecte la concentration de solution sur la base de la fréquence de résonance et du résultat de mesure de température.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)