Patent ID: 9593947
Date: 2017-03-14
CPC Classifications: G01C,G01N

Claim:
1. A method for the measurement of turbulence using a reciprocating ocean microstructure profiler, wherein the profiler comprises: a first profiler subunit, a second profiler subunit, and a central stand having a central axis, a cable, a controller, wherein the first and second profiler subunits are secured to opposite sides of the central stand, respectively, a cable penetration hole for connecting the cable to the central stand is provided at the central axis of the central stand to enable the cable to longitudinally penetrate the central stand via the cable penetration hole, and the central stand is configured to slide up and down along the cable, an upper limit part and a lower limit part are provided on the cable to limit the sliding distance of the central stand, the first profiler subunit is provided with a first buoyancy drive part and a first observation part, the first buoyancy drive part is configured to perform ascending and descending operations of the profiler, and is provided with a first floating compartment holding a first top oil bladder, a first drive compartment holding a first bottom oil bladder, and a first pressure compartment holding a first drive pump assembly and a first solenoid valve, the first drive pump assembly connects the first top oil bladder to the first bottom oil bladder via a first oil outlet line, the first solenoid valve connects the first top oil bladder to the first bottom oil bladder via a first oil return line, the first observation part is electrically connected to the controller, which is electrically connected to the first drive pump assembly and the first solenoid valve, the second profiler subunit is provided with a second buoyancy drive part and a second observation part, the second buoyancy drive part is configured to perform ascending and descending operations of the profiler, and is provided with a second floating compartment holding a second top oil bladder, a second drive compartment holding a second bottom oil bladder, and a second pressure compartment holding a second drive pump assembly and a second solenoid valve, the second drive pump assembly connects the second top oil bladder to the second bottom oil bladder via a second oil outlet line, the second solenoid valve connects the second top oil bladder to the second bottom oil bladder via a second oil return line, the second observation part is electrically connected to the controller which is electrically connected to the second drive pump assembly and the second solenoid valve, the first observation part includes: the second observation part includes: wherein the controller is configured to control ascending and descending operations of the profiler by controlling transfer of hydraulic oil from the first and second bottom oil bladders to the first and second top oil bladders, respectively, and the controller is also configured to generate a go to sleep mode command when each detecting device reaches or is close to its predefined lower limit position so as to wait for a next startup signal, wherein the method comprises: connecting the cable through the cable penetration hole to the central stand to enable the central stand to slide up and down along the cable, performing ascending and descending operations of the profiler with the first and second buoyancy drive parts, measuring an ocean temperature profile by the temperature probe, detecting the high-frequency fluctuating velocity of the current, wherein the turbulent kinetic energy dissipation rate is directly derived from the shear value of high-frequency fluctuating velocity, detecting a depth of the profiler in water by the pressure detection module located in the depth probe, thus obtaining the descent or ascent rate and calculating the turbulent kinetic energy dissipation rate, measuring temperature, conductivity and pressure data, and controlling ascending and descending operations of the profiler by controlling transfer of hydraulic oil from the first and second bottom oil bladders to the first and second top oil bladders, respectively, and generating a go to sleep mode command when each detecting device reaches or is close to its predefined lower limit position so as to wait for the next startup signal.