US 12,455,199 B2
Method of measuring the temperature of water in a meter
Abbas Sabraoui, Rueil Malmaison (FR); Henri Teboulle, Rueil Malmaison (FR); Oussama Abid, Rueil Malmaison (FR); and Guillaume Lecocq, Rueil Malmaison (FR)
Assigned to SAGEMCOM ENERGY & TELECOM SAS, Rueil Malmaison (FR)
Filed by SAGEMCOM ENERGY & TELECOM SAS, Rueil Malmaison (FR)
Filed on Nov. 4, 2021, as Appl. No. 17/519,250.
Claims priority of application No. 2011499 (FR), filed on Nov. 9, 2020.
Prior Publication US 2022/0146330 A1, May 12, 2022
Int. Cl. G01K 11/24 (2006.01); G01F 1/66 (2022.01); G01F 1/667 (2022.01); G01F 15/02 (2006.01); G01K 13/02 (2021.01); G01K 17/00 (2006.01); G01P 5/24 (2006.01)
CPC G01K 11/24 (2013.01) [G01F 1/66 (2013.01); G01F 1/668 (2013.01); G01F 15/022 (2013.01); G01K 13/02 (2013.01); G01K 13/026 (2021.01); G01K 17/00 (2013.01); G01P 5/245 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A measurement method for measuring the temperature of water, the method being performed at least in part in a meter and comprising the steps of:
causing an emitter transducer of the meter to emit an ultrasonic measurement signal, and acquiring an electrical measurement signal produced by a receiver transducer of the meter when it receives the ultrasonic measurement signal after the ultrasonic measurement signal has travelled along a path of defined length in the water;
measuring a speed of the ultrasonic measurement signal in the water;
measuring a level of the electrical measurement signal;
using only the level of the electrical measurement signal to determine whether the temperature of the water is less than or greater than an inflection temperature corresponding to a point of inflection in a curve plotting the speed of sound in water as a function of the temperature of the water;
estimating the temperature of the water from the speed of the ultrasonic measurement signal by using a first formula if the temperature of the water is less than the inflection temperature, and by using a second formula if the temperature of the water is greater than the inflection temperature,
wherein said estimating the temperature of the water is done without using a temperature sensor.