CN-121804564-B - Intelligent ocean sensor time response constant measuring equipment and method thereof

CN121804564BCN 121804564 BCN121804564 BCN 121804564BCN-121804564-B

Abstract

The invention relates to the technical field of sensor experimental measurement, in particular to intelligent ocean sensor time response constant measuring equipment and a method thereof, which comprises a measuring cylinder, a liquid suction cylinder arranged on the right side of the measuring cylinder in parallel and a driving mechanism arranged on the front side of the measuring cylinder, the measuring cylinder comprises an inner measuring bottle at the inner center of the measuring cylinder, an annular piston sleeved on the outer side of the inner measuring bottle, a pair of connecting rods arranged on the top surfaces of the annular pistons, and a lifting rod which is arranged on the top ends of the connecting rods and can be driven by the driving mechanism. According to the invention, through a delay trigger mechanism of the liquid suction barrel after the initial liquid stability measurement is completed, the mixing interval of two fluids is reduced to the greatest extent, when the contrast liquid is directly acted on the sensor probe as a step stimulation signal, the momentum and the flow direction can effectively thoroughly discharge a small amount of initial liquid remained outside the sensor from the liquid outlet at the bottom, so that a step change signal with steep front edge and high purity is provided for the sensor.

Inventors

CHU DONGZHI
SHI QIAN
ZHANG SHUWEI
CAO XUAN
WEN YICHENG
GAO YANG
WU NING
LIU YAN
KONG XIANGFENG
LIU FENGQING

Assignees

山东省科学院海洋仪器仪表研究所
崂山国家实验室

Dates

Publication Date: 20260508
Application Date: 20260306

Claims (5)

1. The intelligent ocean sensor time response constant measuring device is characterized by comprising a measuring cylinder, a liquid suction cylinder arranged on the right side of the measuring cylinder in parallel and a driving mechanism arranged on the front side of the measuring cylinder; The measuring cylinder comprises an inner measuring bottle at the inner center of the measuring cylinder, an annular piston sleeved outside the inner measuring bottle, a pair of connecting rods arranged on the top surfaces of the annular pistons and lifting rods which are arranged on the top ends of the connecting rods and can be driven by a driving mechanism, and the annular piston can be driven to synchronously displace in the measuring cylinder through the connecting rods after the lifting rods move upwards, so that initial liquid is extracted into the measuring cylinder; The inner measuring bottle comprises a bottle body for placing the sensor, a liquid blocking plate sliding in the bottle body, a liquid outlet nozzle arranged at the bottom end of the bottle body, a sealing rubber ring adhered to the inner wall of the bottle body and used for fixing the sensor, and a spray head clamped in the bottle body and arranged below the sealing rubber ring, wherein the annular piston drives the liquid blocking plate to move upwards when moving to the highest stroke, so that initial liquid enters the bottle body and then contacts with a probe at the bottom end of the sensor; the liquid suction cylinder comprises a circular piston, a liquid suction pipe, a liquid outlet pipe, a circular rod and two baffle rings, wherein the liquid suction pipe and the liquid outlet pipe are arranged on the bottom surface of the circular piston, the circular rod is arranged on the top surface of the circular piston, the baffle rings are arranged on the positions, close to the top ends, of the circular rod, the end parts of the liquid outlet pipe are communicated with the spray heads, when the liquid suction cylinder works, the lifting rod is driven to upwards drive the circular piston to suck contrast liquid into the liquid suction cylinder after being in conflict with the baffle rings on the upper side, and after the lifting rod is in conflict with the baffle rings on the lower side, the contrast liquid is sprayed to the sensor probe through the spray heads; the measuring cylinder also comprises a cylinder body, an electromagnetic valve, a liquid discharge pipe, a liquid taking pipe and a hanging frame, wherein the electromagnetic valve is inserted and fixed outside the cylinder body at the bottom end of the cylinder body, the liquid discharge pipe and the liquid taking pipe are fixedly connected to valve ports at the left end and the right end of the electromagnetic valve through bolts, and the hanging frame is clamped and fixed on the outer wall of the cylinder body and used for placing the liquid suction cylinder; The inner wall of the cylinder body is integrally formed with a limiting ring for limiting the position of the annular piston, the annular piston slides in an annular gap between the cylinder body and the inner measuring bottle, the bottom end of the connecting rod is connected with the annular piston in a hot melting manner, the top end of the connecting rod is fixedly clamped with the lifting rod, and the outer wall of the lifting rod is integrally formed with an inserting block; An interlayer for sliding the liquid blocking plate is arranged in the bottle body, a liquid through groove which is internally and externally communicated is formed in the position, close to the bottom end, of the outer wall of the bottle body, a sliding groove which is communicated with the liquid through groove is formed in the position, close to the top end, of the outer wall of the bottle body, a bottle cap is fixedly clamped at the top end of the bottle body, and the bottle cap can be clamped on the top surface of the cylinder body; The liquid blocking plate slides in the interlayer, an outer lug sliding in the chute is fixedly clamped on the outer wall of the circular ring at the top end, and a spring which is in contact with the bottom surface of the bottle cap is arranged above the circular ring of the liquid blocking plate; The bottom and the circular piston hot melt of round bar are connected, the screw thread groove has been seted up on the top of round bar, and the baffle ring and the round bar integrated into one piece that are located the below is located the baffle ring threaded connection in the top of round bar, and the interval that is located the baffle ring and lifter of top is the same with the interval of the upper and lower both ends cell wall of logical cistern.
2. The intelligent ocean sensor time response constant measurement device of claim 1, wherein the liquid suction barrel further comprises a barrel body clamped in the hanging frame, the round piston slides on the inner wall of the barrel body, the liquid suction pipe and the liquid outlet pipe are connected to the bottom surface of the barrel body in a threaded mode, and one-way liquid valves are arranged at the top end of the liquid suction pipe and the bottom end of the liquid outlet pipe.
3. The intelligent ocean sensor time response constant measurement device according to claim 2, wherein the driving mechanism comprises a support frame, a motor fixedly connected to the top surface of the support frame through a bolt, a screw rod coaxially connected to an output shaft of the motor, a sliding plate in threaded connection with the outer side of the screw rod, a pair of sliding rods arranged parallel to the screw rod, a fixed clamping plate welded to the outer wall of the support frame and a detachable clamping plate fixed with the fixed clamping plate through a pair of manual screwing screws.
4. The intelligent ocean sensor time response constant measurement device according to claim 3, wherein the bottom end of the screw rod is rotatably connected to a middle partition plate of the support frame, a slot matched with the insertion block is formed in the outer wall of the sliding plate, the sliding rods are clamped and fixed on the middle partition plate of the support frame, the sliding plate is in sliding connection with the pair of sliding rods, and a circular space in the center of the fixed clamping plate and the fixed center of the detachable clamping plate are matched with the size of the measuring cylinder.
5. An intelligent ocean sensor time response constant measurement method using the intelligent ocean sensor time response constant measurement apparatus of claim 4, comprising the steps of: S1, firstly, an operator places a tubular sensor into an inner measuring bottle of a measuring cylinder, ensures that a probe at the bottom end of the tubular sensor is reliably fixed below a sealing rubber ring, then moves an annular piston to the upper part of a limiting ring, simultaneously inserts an insert of a lifting rod into a slide plate slot of a driving mechanism, then integrally places the measuring cylinder into a clamping groove of a fixed clamping plate, screws a hand screw, so that a disassembling clamping plate and the fixed clamping plate jointly complete hoop type fixation of the measuring cylinder, then the top end of the liquid suction cylinder penetrates through a circular hole of a hanging frame, and is initially in place by interference fit, and finally, the upper baffle ring is screwed on the top end of a round rod, thus the whole equipment is assembled; S2, then, respectively placing fluid tanks which are prepared to contain initial liquid and contrast liquid with specific parameters below the liquid taking pipe and the liquid drawing pipe, and ensuring that the two pipe orifices are completely immersed by the liquid level; S3, then, starting a motor of a driving mechanism, driving a screw rod to rotate, driving a sliding plate and a lifting rod to move upwards, driving an annular piston to move upwards by the lifting rod through a connecting rod, pumping initial liquid into an annular cavity of a cylinder body through a liquid taking pipe, and continuously moving upwards to drive a circular piston to move upwards after the top surface of the lifting rod is in contact with a baffle ring above a liquid pumping cylinder, and pumping contrast liquid into the cylinder body through the liquid pumping pipe; S4, after the annular piston continuously moves upwards, the top surface of the annular piston is abutted against an outer convex block of the liquid blocking plate, the spring is compressed, the liquid blocking plate is pushed to slide upwards in the interlayer, initial liquid flows into and fills a sealing space at the bottom of the bottle body through the liquid through trough, after the annular piston fully contacts with the sensor probe, the sensor is started and connected with the data acquisition system, and stable readings of the annular piston in the initial liquid environment are recorded; S5, after the reading of the sensor is stable, controlling the electromagnetic valve to be switched to enable the cylinder body to be communicated with the liquid discharge pipe, then controlling the motor to rotate reversely, driving the screw rod to drive the sliding plate and the lifting rod to move downwards, enabling the liquid blocking plate to slide downwards firstly under the action of the spring resetting force, blocking the liquid through groove, and enabling the lifting rod to move downwards continuously until the bottom surface of the lifting rod is in contact with the baffle ring below the liquid suction cylinder; S6, in the process of continuously moving down the lifting rod, driving the annular piston to discharge initial liquid in the cylinder body through the liquid discharge pipe, driving the circular piston to press contrast liquid in the cylinder body into the spray header through the liquid discharge pipe, rapidly spraying the contrast liquid to the sensor probe in a jet flow mode, instantaneously replacing and extruding out residual initial liquid, synchronously recording a complete dynamic response curve of the sensor from the moment of contacting the contrast liquid to the moment of reaching a new stable value by the data acquisition system, performing nonlinear fitting on the curve according to a first-order system step response principle, and calculating to obtain a time response constant of the sensor; And S7, after the measurement experiment is completed, the equipment is disassembled according to the reverse sequence of S1, the sensor is taken out, the measuring cylinder, the liquid suction cylinder and the related flow paths are cleaned by using deionized water, and the sensor is dried for later use.

Description

Intelligent ocean sensor time response constant measuring equipment and method thereof Technical Field The invention relates to the technical field of sensor experimental measurement, in particular to intelligent ocean sensor time response constant measuring equipment and a method thereof. Background The time response constant of the intelligent ocean sensor is a key index for measuring the response speed of the intelligent ocean sensor to the change of environmental parameters, and the accuracy of the transient process of data capture is determined. It is important to make this measurement because too slow a response can lead to signal distortion, failing to truly reflect the dynamic changes of the marine microstructure, directly affecting the reliability of marine model predictions, ecological studies and environmental monitoring, and the main test methods include step response and periodic excitation. The patent application number CN202411487125.1 discloses a miniaturized marine sensor time response constant measuring device, which comprises a container, a partition plate component and a lifting component, wherein the partition plate component comprises a partition plate, a door plate, a first driving device and a first controller. The baffle is fixed in the container, separates the container into cavity and lower cavity, goes up the cavity and is used for holding the air, and lower cavity is used for holding liquid, has reduced whole volume, has improved measurement of efficiency, has reduced manufacturing cost. However, the existing measuring equipment cannot construct a stable and closed initial steady-state environment for the sensor before testing, and serious fluid mixing exists in the switching process of the initial liquid and the contrast liquid, so that the front edge of a step signal is retarded, the purity is insufficient, and secondly, the whole flow is highly dependent on the time sequence and the precision of manual operation, so that the efficiency is low, the repeatability and the accuracy of a measuring result are more difficult to ensure, in addition, the sensor actually works in water, extra interference is introduced from the sudden change of a medium when the sensor is in water, and the measured response time cannot truly reflect the underwater dynamic performance of the sensor. In view of this, we propose an intelligent ocean sensor time response constant measurement device and method thereof. Disclosure of Invention The invention aims to provide intelligent ocean sensor time response constant measuring equipment and a method thereof, wherein an annular piston is used for pushing a liquid resistance plate at the end of a stroke, so that initial liquid can rapidly flow into and fill the space at the bottom of a bottle body, and a static, uniform and stable initial testing environment is provided for a sensor, so that the problems in the background technology are solved. In order to achieve the above object, in one aspect, the present invention provides the following technical solutions: the intelligent ocean sensor time response constant measuring device comprises a measuring cylinder, a liquid suction cylinder arranged on the right side of the measuring cylinder in parallel and a driving mechanism arranged on the front side of the measuring cylinder; The measuring cylinder comprises an inner measuring bottle at the inner center of the measuring cylinder, an annular piston sleeved outside the inner measuring bottle, a pair of connecting rods arranged on the top surfaces of the annular pistons and lifting rods which are arranged on the top ends of the connecting rods and can be driven by the driving mechanism; after the lifting rod is arranged to move upwards, the annular piston can be driven to synchronously move in the measuring cylinder through the connecting rod, so that initial liquid is extracted into the measuring cylinder; the inner measuring bottle comprises a bottle body for placing the sensor, a liquid blocking plate sliding in the bottle body, a liquid outlet nozzle arranged at the bottom end of the bottle body, a sealing rubber ring adhered to the inner wall of the bottle body for fixing the sensor, and a spray head clamped in the bottle body and arranged below the sealing rubber ring; the annular piston is arranged to drive the liquid blocking plate to move upwards when moving to the highest stroke, so that the initial liquid enters the bottle body and contacts with the probe at the bottom end of the sensor; The liquid suction cylinder comprises a circular piston, a liquid suction pipe and a liquid outlet pipe which are arranged on the bottom surface of the circular piston, a circular rod arranged on the top surface of the circular piston, and two baffle rings arranged on the position, close to the top end, of the circular rod, wherein the end part of the liquid outlet pipe is communicated with the spray header; When the device works, after the lifting rod is abutted ag