Off-line water body temperature / depth detection device for science popularization education

Abstract

The invention discloses an off-line water body temperature / depth detection device for science popularization education, which is characterized in that the detection device comprises a signal acquisition assembly, a shell and sealing assembly and a circuit and power supply control module, the signal acquisition assembly acquires temperature and pressure signals of an external water body and transmits data to the circuit and power supply control module; the shell and the sealing assembly are used for hardware supporting and overall waterproofing of an equipment electronic system. And the circuit and power supply control module is used for circuit control, power supply and data output. Compared with the prior art, a mechanical structure and a hardware circuit both adopt functional modular design, detection equipment is easy to disassemble, assemble and replace modules, a connecting structure adopts plug, buckle and spring lock catch design, and the reliability of a water body temperature and depth detection function is ensured while quick disassembly and assembly of each module assembly are realized; the device is suitable for demonstration and demonstration in the ocean science popularization education process.

Description

Technical Field

[0001] The invention relates to the technical field of popular science teaching aids, in particular to an off-line water body temperature / depth detection device for popular science education based on modular functional design. Background Art

[0002] At present, marine science education is crucial to improving the public's, especially young people's, understanding of the marine environment. It can not only enhance people's awareness of marine ecosystem protection, but also stimulate the younger generation's interest in marine science research and cultivate important talent resources for future marine exploration and protection. Ocean temperature and depth are key parameters for marine environmental scientific monitoring. They are of great significance for understanding ocean circulation, climate change and ecosystem functions.

[0003] As an important way to improve the public's scientific literacy, popular science education requires simple, intuitive and cost-effective tools to attract and educate young people. At the same time, modular design can not only reduce costs, but also allow young people to learn relevant scientific principles and technical knowledge during the assembly and operation process, and improve their practical ability and interest in scientific exploration.

[0004] The existing ocean temperature depth detection devices mainly rely on professional equipment such as temperature-salinity-depth meters (CTDs). Although these devices measure accurately, they are usually costly and complicated to operate, making them unsuitable for widespread use in science popularization and education activities. Therefore, developing an ocean temperature depth detector that can not only achieve long-term water depth temperature detection but also has a modular design has important practical significance for ocean science popularization and education activities. Summary of the invention

[0005] The purpose of the present invention is to design an offline water body temperature / depth detection device for popular science education in view of the deficiencies of the prior art. The device adopts a modular design concept of functional deconstruction, analyzes the performance indicators of water body temperature and depth detection equipment, integrates the hardware circuit into the mechanical structure, and forms an offline water body temperature depth science and education detection device that is easy to disassemble and assemble. The modular design makes it easy to disassemble and replace the detection equipment, so as to achieve the purpose of using the instrument for scientific research and popular science education at the same time. The device can not only realize long-term detection of water body depth temperature, but also has a modularly designed ocean temperature depth detector, which has important practical significance for marine popular science education activities. The device has low manufacturing cost and simple operation. The mechanical structure and hardware circuit both adopt functional modular design, and the connection structure adopts plug-in, snap-on and spring lock design to realize quick removal and installation of each module component. The reliability of the water body temperature depth detection function is high, and it is suitable for demonstration and teaching in the process of marine popular science education.

[0006] The specific technical scheme for realizing the purpose of the present invention is: an offline water temperature / depth detection device for popular science education, characterized in that the detection device is composed of a circuit and power control module and a lithium battery arranged in a shell body, the circuit and power control module include: a data access module, a signal solution board, a voltage stabilization module, a core control board and an OLED display module inserted on a hardware integrated board; the shell body is a cylinder, one end of which is provided with a sensor cover connected with a spring lock, and the other end is provided with a power flange cover fixedly connected with a locking bolt; the sensor cover is provided with a pressure-resistant sealing switch and a signal acquisition component; the pressure-resistant The pressure-sealed switch and signal acquisition component are arranged in the sealed connector, and its data cable is plugged into the hardware integrated board; the spring lock is a lock and spring hook component with a quick-open structure, and is respectively installed on the bosses of the shell body and the sensor cover by lock screws, so as to realize the quick connection or separation of the sensor cover and the shell body; the signal acquisition component includes a temperature sensor chip, a pressure sensor chip and a sealed connector; the temperature sensor chip and the pressure sensor chip are arranged in the sealed connector, and are plugged into the hardware integrated board by a cable; the lithium battery is plugged into the shell body, and its power connector is plugged into the hardware integrated board.

[0007] The signal acquisition component is installed at one end of the shell body, and is used to collect temperature and pressure signals of external water bodies, and transmit the data to the circuit and power control module; the shell body, sensor cover and power flange cover are used for hardware support and overall waterproofing of the equipment electronic system; the hardware integration board, core control board, signal solution board, data access module, pressure-resistant sealed switch, lithium battery, voltage stabilizing module and OLED display module are installed inside the shell body for circuit control, power supply and data output; one end of the shell body is provided with a flange structure for installing the battery flange cover, and six bosses are evenly distributed on the outer wall of the other end for the installation of spring locks; the hardware integration board is fixedly installed on the card seat on the inner side of the shell body, and is used The fixing and circuit integration of each electronic module; the core control board is inserted in the center position of the hardware integrated board; the data access module is inserted in the hardware integrated board; the signal solution board is inserted in the hardware integrated board; the voltage stabilizing module is inserted in the hardware integrated board, and is used to stabilize the input voltage at 5V; the OLED display module is installed on the hardware integrated board through a cable; the pressure-resistant sealed switch is installed on the sensor cover and passes through the inside of the sealed connector, and its data cable is directly inserted in the hardware integrated board; the signal acquisition component is installed on the sensor cover and passes through the inside of the sealed connector, and its circuit cable is inserted in the signal solution board; the lithium battery is installed at one end of the outer shell body, and its power connector is directly inserted in the hardware integrated board.

[0008] The power flange cover plate and the sensor cover plate are respectively provided with radial sealing grooves, in which radial O-rings are embedded, so as to realize radial sealing between the housing body and the sensor cover plate and the power flange cover plate.

[0009] Axial sealing grooves are respectively provided at both ends of the shell body, and axial O-type sealing rings are embedded in the grooves to achieve axial sealing between the shell body and the sensor cover plate and the power supply flange cover plate.

[0010] When the housing body and the sensor cover are installed, vaseline or low-temperature grease is applied to the axial sealing grooves to form an oil film seal.

[0011] The shell body and the sensor cover are connected by a spring lock; six mounting bosses with positioning holes are evenly distributed on the cylindrical surface of the sensor cover for mounting the spring lock.

[0012] When the housing body and the power flange cover are installed, vaseline or low-temperature grease is applied to the axial sealing grooves to form an oil film seal.

[0013] The shell body and the power flange cover are connected by bolts, the bolt connection parts are anti-loosening bolts and loose nuts, and a small amount of screw glue is applied during installation.

[0014] The temperature acquisition chip and the depth acquisition chip of the signal acquisition component are installed in the sealed connector, and the sealed connector is filled with sealant, and the sealant completely covers the threads and each line sequence of the watertight cable.

[0015] Two groups of characteristic rings are arranged on the outer cylindrical surface of the shell body for installing and fixing cables.

[0016] The shell body, the sensor cover plate and the power flange cover plate are manufactured by photocuring additive manufacturing, and the material thereof is photosensitive resin or transparent photosensitive resin.

[0017] The housing body, the sensor cover plate and the power flange cover plate are subjected to anti-corrosion treatment.

[0018] The offline water temperature and depth detection specifically comprises the following steps:

[0019] 1) At each time point n, collect temperature and pressure data;

[0020] 2) Using the known water density and pressure data, calculate the current depth based on the pressure-depth formula;

[0021] 3) Correct the temperature and depth and save them in the memory card;

[0022] 4) After this round of acquisition is completed, the system waits for the sampling interval and then performs a new round of acquisition from step (1).

[0023] The pressure-depth is calculated by the following formula (a):

[0024]

[0025] Where H(t) is the water depth at the current sampling point; P(t) is the pressure at the current sampling point; ρliquid is the water density; and g is the gravitational acceleration within the sampling range.

[0026] Before the data sampling, the water density and gravity acceleration need to be checked and the parameters need to be corrected. When the control system is in the waiting stage, only the crystal oscillator timing circuit is turned on and other programs and peripherals are turned off.

[0027] Compared with the prior art, the present invention has the following beneficial technical effects and significant technical progress:

[0028] 1) It can complete offline water body long-endurance detection tasks, meet the requirements of underwater detection from 0 to 45 meters, and has a battery life of more than 180 hours;

[0029] 2) It has the function of compensating water density and gravity acceleration and has strong environmental adaptability;

[0030] 3) The mechanical structure is simple, and quick-release and snap-on designs are used in many places, which is easy to install and disassemble. The hardware circuit adopts a functional modular design, which is convenient for the teaching process in science popularization activities. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a three-dimensional diagram of the appearance of the present invention;

[0032] Figure 2 It is a schematic diagram of the structure of the present invention;

[0033] Figure 3 It is a schematic diagram of the circuit and power supply control module structure;

[0034] Figure 4 This is the circuit diagram of the hardware integrated board;

[0035] Figure 5 This is a detection flow chart of Example 1. DETAILED DESCRIPTION

[0036] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0037] Example 1

[0038] See also Figure 1-2The present invention is composed of a circuit and power control module 1 and a lithium battery 15 arranged in a shell body 9, wherein the circuit and power control module 1 includes: a data access module 17, a signal solution board 18, a voltage stabilization module 19, a core control board 20 and an OLED display module 21 inserted on a hardware integrated board 16; the shell body 9 is a cylinder, one end of which is provided with a sensor cover plate 3 connected with a spring lock buckle 6, and the other end is provided with a power flange cover plate 14 fixedly connected with a locking bolt 11; the sensor cover plate 3 is provided with a pressure-resistant sealed switch 1 and a signal acquisition component 2; the pressure-resistant sealed switch 1 and the signal acquisition component 2 are arranged In the sealed connector, its data cable is plugged into the hardware integrated board 16; the spring lock 4 is a lock and snap assembly with a quick-open structure, and is respectively installed on the bosses of the shell body 9 and the sensor cover 3 by the lock screws 5, so that the sensor cover 3 and the shell body 9 can be quickly connected into one or separated; the signal acquisition component 2 includes: a temperature sensor chip, a pressure sensor chip and a sealed connector; the temperature sensor chip and the pressure sensor chip are arranged in the sealed connector, and are plugged into the hardware integrated board 16 by cables; the lithium battery 15 is plugged into the shell body 9, and its power connector is plugged into the hardware integrated board 16.

[0039] One end of the shell body 9 is provided with a flange structure for mounting a battery flange cover plate 14, and the other end is provided with a sensor cover plate 3 connected with a spring lock 6. Axial sealing grooves 12 are respectively provided on the connecting surfaces at both ends of the shell body 9, and axial O-rings 7 are embedded therein to achieve axial sealing between the shell body 9 and the sensor cover plate 3 and the power supply flange cover plate 14; radial sealing grooves 13 are respectively provided on the connecting surfaces of the sensor cover plate 3 and the power supply flange cover plate 14, and radial O-rings 8 are embedded therein to achieve radial sealing between the shell body 9 and the sensor cover plate 3 and the power supply flange cover plate 14; the sensor cover plate 3 is connected to the shell body 9 through six evenly distributed groups of spring locks 6; six bosses with positioning holes are evenly distributed on the cylindrical surfaces of the sensor cover plate 3 and the shell body 9 for mounting the spring lock 6; when the shell body 9 and the sensor cover plate 3 are installed, vaseline or low-temperature grease is applied to the sealing grooves to form an oil film seal; the power supply flange cover plate 14 is fastened to the shell body 9 through 8 evenly distributed groups of bolt connectors, and the bolt connectors are anti-loosening Bolt 11 and loose nut 10; a small amount of screw glue is applied to the anti-loosening bolt 11 during installation; when the housing body 9 and the power flange cover 14 are installed, vaseline or low-temperature grease is applied to the sealing grooves to form an oil film seal; the pressure-resistant sealed switch 1 is installed on the sensor cover 3 and passes through the inside of the sealed connector, and its circuit connector is directly plugged into the hardware integrated board 16; the signal acquisition component 2 is installed on the sensor cover 3, and its signal cable is directly plugged into the solver board 16; the lithium battery 15 is installed at one end inside the housing body 9, and its power connector is directly plugged into the hardware integrated board 16; the temperature acquisition chip and depth acquisition chip of the signal acquisition component 2 are installed in the sealed connector, and the inside of the sealed connector is filled with sealant, and the sealant completely covers the threads and each line sequence of the watertight cable; the outer cylindrical surface of the housing body 9 is provided with two sets of characteristic rings 22 for installing and fixing cables; the housing body 9, the sensor cover 3 and the power flange cover 14 are manufactured by photocuring additive manufacturing, and their materials are photosensitive resin or transparent photosensitive resin, and anti-corrosion treatment is performed.

[0040] See also Figure 3-4The circuit and power control module I includes: a data access module 17, a signal solution board 18, a voltage stabilizing module 19, a core control board 20 and an OLED display module 21 inserted on a hardware integrated board 16; the core control board 20 is directly inserted in the center of the hardware integrated board 16; the data access module 17 is directly inserted in the hardware integrated board 16; the signal solution board 18 is directly inserted in the hardware integrated board 16; the voltage stabilizing module 19 is directly inserted in the hardware integrated board 16; the OLED display module 21 is installed on the hardware integrated board 16 through a cable; the hardware integrated board 16 is fixedly installed on the card seat on the inner side of the shell body 9; the plug-in structure between the hardware integrated board 16 and other circuit modules is a DuPont pin, and the circuit interface between the hardware integrated board 16 and the pressure-resistant sealed switch 1 and the lithium battery 15 is an XH 2.54 interface.

[0041] The present invention is suitable for long-term offline detection of water temperature and depth in marine scientific research and the teaching of marine scientific research instruments in popular science education activities. The assembly process flow and the detection process are described as follows:

[0042] 1) Before assembly, all parts should be cleaned, and the surface burrs and layers of the shell body 9, sensor cover 3 and power flange cover 14 should be removed. Then, anti-corrosion coating should be applied to the surface of the shell body 9, sensor cover 3 and power flange cover 14, and left to stand for 24 hours;

[0043] 2) Solder the DuPont pins of the hardware integrated board 16 to the XH 2.54 interface, insert the core control board 20, and then insert the voltage regulator module 19, the signal solution board 18, the data access module 17 in sequence, and then insert the OLED display module 21 through the cable;

[0044] 3) Apply a small amount of low-temperature grease to the axial sealing grooves at both ends of the housing body 9, the sensor cover 3 and the radial sealing grooves 13 of the power flange cover 14, and then install the axial O-ring 7 and radial O-ring 8 in the sealing grooves respectively, ensuring that there is no tilt or distortion during assembly;

[0045] 4) Install the six spring lock 6 components on the mounting bosses of the housing body 9 and the cylindrical surface of the sensor cover 3 respectively through the lock screws 5, and ensure that the lock screws 5 are installed in the positioning holes and the installation direction is normal.

[0046] 5) Install the lithium battery 15 into one end of the housing body 9 through the card slot, making sure that the power cord passes through the partition;

[0047] 6) The power flange cover 14 is fastened to the housing body 9 by 8 sets of anti-loosening bolts 11 and anti-loosening nuts 10, and the bolts are fastened in a cross-shaped manner;

[0048] 7) Install the pressure-resistant sealed switch 1 and the signal acquisition component 2 on the sensor cover 3 through a sealed threaded joint;

[0049] 8) The hardware integrated board 16 and the circuit components installed thereon are mounted on the card holder in the housing body 9 by means of snaps, the power connector of the lithium battery 15 is inserted into the hardware integrated board 16, the circuit connector of the pressure-resistant sealed switch 1 is inserted into the hardware integrated board 16, and the signal cable of the signal acquisition component 2 is inserted into the hardware integrated board 16;

[0050] 9) The sensor cover 3 is fastened to the housing body 9 through 6 sets of anti-loosening bolts 11 and the lock hook 4 to ensure that the assembly is not tilted or twisted, so as to form an overall seal of the offline water body temperature depth detection device. At this point, the primary assembly process of the offline water body temperature depth detection device is completed.

[0051] See also Figure 5 , the assembled off-line water body temperature depth detection device is installed on the water body instrument fixing device through the two sets of characteristic rings 22 of the shell body 9, and the detection process is described as follows:

[0052] 1) Before the test begins, calibrate the gravity acceleration and water density of the current sampling environment by other methods, and correct the detection procedure;

[0053] 2) After the circuit is connected through the pressure-resistant sealed switch 1, when the core control board 20 calculates the sampling point time, the signal acquisition component 2 collects and returns the voltage analog values ​​of the water temperature and pressure at the sampling point;

[0054] 3) Convert the voltage analog values ​​of water temperature and pressure into actual values ​​of temperature and pressure through the sensor characteristic function;

[0055] 4) Calculate the water depth at the current sampling point according to the pressure-depth formula;

[0056] 5) The water temperature and depth of the sampling point are saved in the TF card through the serial interface, and displayed in real time through the OLED display module 21;

[0057] 6) Complete a detection process of the offline water temperature depth detection device.

[0058] The offline water temperature and depth detection specifically comprises the following steps:

[0059] 1) At each time point n, collect temperature and pressure data;

[0060] 2) Using the known water density and pressure data, calculate the current depth based on the pressure-depth formula;

[0061] 3) Correct the temperature and depth and save them in the memory card;

[0062] 4) After this round of acquisition is completed, the system waits for the sampling interval and then performs a new round of acquisition from step (1).

[0063] Before the data sampling, the water density and gravity acceleration need to be checked and the parameters need to be corrected. When the control system is in the waiting stage, only the crystal oscillator timing circuit is turned on and other programs and peripherals are turned off.

[0064] The mechanical structure and hardware circuit structure of the present invention both adopt a functional modular design, and most of the connection structures adopt plug-in, snap-on and spring lock designs. While achieving quick removal and installation of each module component, it also ensures the reliability of the water temperature depth detection function, and is suitable for demonstration and teaching in the process of marine science education.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention, such as replacing a hardware integrated board with a simple circuit connection, etc., should be included in the protection scope of the present invention.

Claims

1. An off-line water temperature / depth detection device for popular science education, characterized in that: The detection device is composed of a circuit and power control module and a lithium battery arranged in a shell body, wherein the circuit and power control module include: a data access module, a signal solution board, a voltage stabilizing module, a core control board and an OLED display module plugged into a hardware integrated board; the shell body is a cylinder, one end of which is provided with a sensor cover connected with a spring lock, and the other end is provided with a power flange cover fixedly connected with a locking bolt; a pressure-resistant sealed switch and a signal acquisition component are arranged on the sensor cover; the pressure-resistant sealed switch and the signal acquisition component are arranged in a sealed connector, and the data cable thereof is plugged into the hardware integrated board; the spring lock is a lock and spring hook component of a quick-open structure, and is respectively installed on the boss of the shell body and the sensor cover by a lock screw, so as to realize the quick connection of the sensor cover and the shell body into one or separation; the signal acquisition component includes a temperature sensor chip, a pressure sensor chip and a sealed connector; the temperature sensor chip and the pressure sensor chip are arranged in the sealed connector, and are plugged into the hardware integrated board by a cable; the lithium battery is arranged in the shell body, and the power connector thereof is plugged into the hardware integrated board.

2. The off-line water temperature / depth detection device for popular science education according to claim 1, characterized in that: The hardware integrated board is plugged into a card seat on the inner side of the shell body.

3. The off-line water temperature / depth detection device for popular science education according to claim 1, characterized in that: The power flange cover plate and the sensor cover plate are respectively provided with radial sealing grooves, in which radial O-rings are embedded, so as to realize radial sealing between the housing body and the sensor cover plate and the power flange cover plate.

4. The off-line water temperature / depth detection device for popular science education according to claim 1, characterized in that: Axial sealing grooves are respectively arranged on the connecting surfaces at both ends of the shell body, and axial O-type sealing rings are embedded in the grooves to achieve axial sealing between the shell body and the sensor cover plate and the power supply flange cover plate.

5. The off-line water temperature / depth detection device for popular science education according to claim 1 or claim 4, characterized in that: Two groups of characteristic rings for installing and fixing cables are arranged on the outer side of the shell body.

6. The off-line water temperature / depth detection device for popular science education according to claim 1, characterized in that: The shell body, the sensor cover plate and the power flange cover plate are manufactured by photocuring additive manufacturing, and the material thereof is photosensitive resin or transparent photosensitive resin.

7. The off-line water temperature / depth detection device for popular science education according to claim 1, characterized in that: The boss is provided with a positioning hole for installing a spring lock.

8. The off-line water temperature / depth detection device for popular science education according to claim 1, characterized in that: The offline water temperature and depth detection specifically comprises the following steps: 1) At each time point n, collect water temperature and pressure data at different depths; 2) Using the known water density and pressure data, calculate the current depth based on the pressure-depth formula; 3) Before sampling, check the water density and gravity acceleration, and store the water temperature and depth correction values ​​in the storage card; 4) After data collection is completed, the system waits for the sampling interval and repeats steps 1) to 3) to perform a new round of data collection.

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