An apparatus and a measuring method for automatically measuring the density of a liquid

Abstract

The present invention discloses a device and a measurement method for automatically measuring the density of a liquid. The device for automatically measuring the density of a liquid comprises a densitometer and a mainframe. The densitometer is suspended in the liquid, and the densitometer establishes a communication connection with the mainframe through Bluetooth. A variety of sensors are installed in the densitometer, and the data detected by the various sensors are transmitted to the mainframe through Bluetooth. The mainframe can set the period of data acquisition and correct the data. The present invention solves the problems that the existing liquid density measurement device cannot automatically measure the density according to a set period and has a large measurement error.

Description

Technical Field

[0001] The present invention relates to the field of density measurement devices, and particularly to a device and a measurement method for automatically measuring the density of liquids. Background Art

[0002] The soil particle composition, also known as the soil mechanical composition, refers to the combined proportion of mineral particles of different particle sizes in the soil. An ideal soil particle composition is conducive to the retention and supply of soil nutrients and water. For forest soils, under the conditions of ensuring soil ventilation, water retention, and nutrient supply, the smaller the particle composition, the higher the nutrient content, and the easier it is to be absorbed and utilized by plants. In daily forestry surveys and research work, the forest soil particle composition is monitored as a basic item.

[0003] Currently, the current standard in the forestry system is "LY / T 1225-1999 Determination of Forest Soil Particle Composition (Mechanical Composition)". This standard includes two methods: the hydrometer method and the pipette method. Compared with the pipette method, the hydrometer method is relatively easier to operate, has a lower determination cost, and slightly lower accuracy but is basically sufficient. Therefore, in the determination process of most forest soil particle composition samples, the hydrometer method has a much higher usage rate and is currently the most mainstream method for determining forest soil particle composition.

[0004] According to the technical requirements of the current standard "LY / T 1225-1999 Determination of Forest Soil Particle Composition (Mechanical Composition)", the experimenter must read the readings of the hydrometer at 1 minute, 5 minutes, and 8 hours after stirring the suspension. This is a very cumbersome and difficult process to precisely control, especially when the experimenter needs to process multiple samples simultaneously. At the same time, it is also necessary to read the readings of the thermometer to correct the final hydrometer readings according to the "Soil Hydrometer Calibration Table". The measurement process is cumbersome, the waiting period is long, and errors are easily generated. Summary of the Invention

[0005] For this reason, the present invention provides a device and a measurement method for automatically measuring the density of liquids to solve the problems that the existing liquid density measurement devices cannot automatically measure the density according to a set period and have large measurement errors.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] According to a first aspect of the present invention, a device for automatically measuring the density of a liquid is disclosed. The device for automatically measuring the density of a liquid includes: a hydrometer and a main unit. The hydrometer is suspended in the liquid, and the hydrometer establishes a communication connection with the main unit through Bluetooth. A variety of sensors are installed in the hydrometer, and the data detected by the variety of sensors are transmitted to the main unit through Bluetooth. The main unit can set the period of data collection and correct the data.

[0008] Further, the bottom of the hydrometer is in the shape of an inverted frustum, and a counterweight is arranged around the bottom of the hydrometer to ensure the stable state of the hydrometer. A temperature sensor is installed on the bottom surface of the hydrometer, and the temperature sensor is connected to the control chip inside the hydrometer.

[0009] Further, scale lines are provided on the surface of the hydrometer. Scale lines at different positions represent different density values. Metal strips are pasted on the scale lines, and the metal strips are connected to the control chip inside the hydrometer.

[0010] Further, there is a one-to-one correspondence between the metal strips and the scale lines on the hydrometer. The metal strips below the liquid level are short-circuited, and the metal strips above the liquid level are connected to the control chip. The control chip can sense the position of the metal strip corresponding to the current liquid level.

[0011] Further, a first Bluetooth module and a storage battery are installed inside the hydrometer. The first Bluetooth module is connected to the control chip, and the storage battery is connected to the control chip. The control chip supplies power to the first Bluetooth module and the metal strips outside the hydrometer.

[0012] Further, a waterproof charging interface is provided at the top of the hydrometer, and the charging interface is connected to the storage battery.

[0013] Further, a second Bluetooth module, a memory, a central processing unit, and a display screen are provided inside the host. The second Bluetooth module establishes a Bluetooth connection with the first Bluetooth module inside the hydrometer. The central processing unit corrects the reading of the hydrometer each time according to the soil hydrometer calibration table. The memory is used to store the corrected hydrometer readings. The display screen is connected to the central processing unit to display the corrected hydrometer readings. The central processing unit can set the period for the hydrometer to read density values.

[0014] Further, a setting button is installed on the host, and the setting button is used to adjust the data reading period of the hydrometer.

[0015] Further, the host is provided with a data export interface, which can export the density values read within a set period according to the ID numbers of different hydrometers.

[0016] According to the second aspect of the present invention, a method for automatically measuring the density of a liquid is disclosed. The method is as follows:

[0017] Place the hydrometer in the liquid. The hydrometer floats in the liquid, and different-density liquids correspond to different floating depths of the hydrometer.

[0018] Use the central processing unit inside the host to set the period for automatically reading density values, and the set period is sent to the control chip inside the hydrometer via Bluetooth.

[0019] The part of the metal strip on the hydrometer immersed in the liquid is short-circuited, and the part above the liquid level is conducting. The control chip senses the scale value corresponding to the current liquid level.

[0020] The first Bluetooth module in the hydrometer establishes a connection with the second Bluetooth module in the host, and sends the read density data and liquid temperature data to the central processor in the host.

[0021] The host can connect multiple hydrometers simultaneously, and record the collected data according to the ID information of different hydrometers.

[0022] The central processor corrects the reading of the hydrometer each time according to the soil hydrometer calibration table, and the corrected hydrometer reading is transmitted to the memory for storage.

[0023] The display screen on the host can display the corrected hydrometer reading, and the hydrometer reading and liquid temperature data within a set period can be exported through the data export interface.

[0024] The present invention has the following advantages:

[0025] The present invention discloses a device and a measurement method for automatically measuring the density of a liquid. The hydrometer is suspended in the liquid, and a metal strip is provided on the scale line outside the hydrometer to sense the position of the scale line corresponding to the liquid level. A connection is established between the first Bluetooth module inside the hydrometer and the second Bluetooth module of the host, and the current liquid density value is transmitted to the central processor for calibration. The calibrated density data is displayed and stored. The host can set the period for automatically reading the density data, reducing the labor intensity of manual work, recording the density value according to the set period, and printing and outputting the density data according to the ID number of different hydrometers, which is convenient for analysis and reduces errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only exemplary, and for those of ordinary skill in the art, other implementation drawings can be obtained by extension according to the provided drawings without creative efforts.

[0027] The structures, ratios, sizes, etc. shown in this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they do not have technical substance. Any modification of the structure, change of the ratio relationship or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope that the technical content disclosed by the present invention can cover.

[0028] Figure 1 Schematic structural diagram of a device for automatically measuring the density of a liquid provided by the present invention;

[0029] Figure 2 Schematic connection diagram of a device for automatically measuring the density of a liquid provided by the present invention;

[0030] In the figure: 1 - densitometer, 2 - host, 3 - counterweight, 4 - temperature sensor, 5 - control chip, 6 - metal strip, 7 - first Bluetooth module, 8 - storage battery, 9 - charging interface, 10 - second Bluetooth module, 11 - memory, 12 - central processing unit, 13 - display screen, 14 - data export interface. Specific implementation manners

[0031] The following specific embodiments illustrate the implementation manners of the present invention. Those skilled in the art can easily understand the other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0032] Embodiment 1

[0033] This embodiment discloses a device for automatically measuring the density of a liquid. The device for automatically measuring the density of a liquid includes: a densitometer 1 and a host 2. The densitometer 1 floats in the liquid. The densitometer 1 establishes a communication connection with the host 2 through Bluetooth. A variety of sensors are installed in the densitometer 1, and the data detected by the variety of sensors are transmitted to the host 2 through Bluetooth. The host 2 can set the data acquisition period and correct the data.

[0034] The bottom of the densitometer 1 is in an inverted frustum shape. A counterweight 3 is arranged around the bottom of the densitometer 1. The basic structure of the counterweight 3 is similar to that of an ordinary soil densitometer 1, ensuring the stable state of the densitometer 1 in the liquid. A temperature sensor 4 is installed on the bottom surface of the densitometer 1, and the temperature sensor 4 is connected to the control chip 5 inside the densitometer 1. The temperature value of the liquid can be detected in real time through the temperature sensor 4.

[0035] The surface of the densitometer 1 is provided with scale lines. The scale lines at different positions represent different density values. A metal strip 6 is pasted on the scale line, and the metal strip 6 is connected to the control chip 5 inside the densitometer 1. The scale line on the densitometer 1 represents the density value of the current liquid. When the ordinary densitometer 1 measures the liquid density, the densitometer 1 is suspended in the liquid. In the stable state, the value indicated by the scale line corresponding to the liquid level is the density value of the current liquid. In this embodiment, the metal strip 6 is pasted outside the scale line. The metal strip 6 has a one-to-one correspondence with the scale line on the densitometer 1. The metal strip 6 below the liquid level is short-circuited, and the metal strip 6 above the liquid level is connected to the control chip 5. The control chip 5 can sense the position of the metal strip 6 corresponding to the current liquid level and automatically obtain the density value data corresponding to the current liquid level.

[0036] A first Bluetooth module 7 and a storage battery 8 are installed inside the densitometer 1. The first Bluetooth module 7 is connected to the control chip 5, and the storage battery 8 is connected to the control chip 5. The control chip 5 supplies power to the first Bluetooth module 7 and the metal strip 6 outside the densitometer 1. A waterproof charging interface 9 is provided at the top of the densitometer 1. The charging interface 9 is connected to the storage battery 8. An external power supply is connected through the charging interface 9 to charge the storage battery 8. The charging interface 9 adopts a waterproof design to avoid the situation of short circuit when encountering water.

[0037] A second Bluetooth module 10, a memory 11, a central processing unit 12, and a display screen 13 are provided inside the host 2. The second Bluetooth module 10 can establish a Bluetooth connection with multiple densitometers 1. The densitometers can be placed in different liquids and can establish a connection with the host 2 at any time. Each densitometer 1 has its own unique ID number. The second Bluetooth module 10 establishes a Bluetooth connection with the first Bluetooth module 7 inside the densitometer 1. The central processing unit 12 corrects the reading of each densitometer 1 according to the soil densitometer 1 calibration table to reduce errors;

[0038] The memory 11 is used to store the corrected readings of the densitometer 1, and the storage is carried out according to the ID year number of each densitometer 1. The display screen is connected to the central processing unit 12 to display the corrected readings of the densitometer 1. The central processing unit 12 can set the period for the densitometer 1 to read the density value. Periods such as one minute, five minutes, and eight hours can be set as needed, and the density data is automatically read according to the set period. A setting button is installed on the host 2, and the data reading period of the densitometer 1 is adjusted by using the setting button. The host 2 is provided with a data export interface 14, which can export the density values read within the set period of different densitometers 1 according to the ID number. There is no need for the staff to stay on the spot all the time, and the values of the densitometer 1 are automatically read, reducing the work intensity and at the same time reducing the errors caused by manual reading.

[0039] Embodiment 2

[0040] This embodiment discloses a method for automatically measuring the density of a liquid. The method is as follows:

[0041] Place the hydrometer 1 in the liquid. The hydrometer 1 floats in the liquid, and different densities of the liquid correspond to different floating depths of the hydrometer 1.

[0042] Use the central processing unit 12 in the host 2 to set the period for automatically reading the density value, and the set period is sent to the control chip 5 in the hydrometer 1 via Bluetooth.

[0043] The part of the metal strip 6 on the hydrometer 1 in the liquid is short-circuited, and the part above the liquid surface is conducting. The control chip 5 senses the scale value corresponding to the current liquid level.

[0044] The first Bluetooth module 7 in the hydrometer 1 establishes a connection with the second Bluetooth module 10 in the host 2, and sends the read density data and liquid temperature data to the central processing unit 12 in the host 2.

[0045] The host can connect multiple hydrometers simultaneously, and record the collected data according to the ID information of different hydrometers.

[0046] The central processing unit 12 corrects the reading of the hydrometer 1 each time according to the calibration table of the soil hydrometer 1, and the corrected reading of the hydrometer 1 is transmitted to the memory 11 for storage.

[0047] The display screen on the host 2 can display the corrected reading of the hydrometer 1, and the reading of the hydrometer 1 and the liquid temperature data within the set period can be exported through the data export interface 14.

[0048] For an apparatus and method for automatically measuring the density of a liquid disclosed in the present invention, the hydrometer 1 is suspended in the liquid, a metal strip 6 is arranged on the scale line outside the hydrometer 1 to sense the position of the scale line corresponding to the liquid level, a connection is established between the first Bluetooth module 7 inside the hydrometer 1 and the second Bluetooth module 10 of the host 2, and the current liquid density value is transmitted to the central processing unit 12 for calibration. The calibrated density data is displayed and stored. The host 2 can set the period for automatically reading the density data, reduce the labor intensity of manual work, record the density value according to the set period, and can print and output the density data according to the ID number of different hydrometers 1, which is convenient for analysis and reduces errors.

[0049] Although the present invention has been described in detail above with general descriptions and specific embodiments, based on the present invention, some modifications or improvements can be made, which are obvious to those skilled in the art. Therefore, these modifications or improvements made without departing from the spirit of the present invention all fall within the scope of protection required by the present invention.

Claims

1. An apparatus for automatically measuring the density of a liquid, characterized in that, The device for automatically measuring the density of a liquid includes a densitometer and a host. The densitometer is suspended in the liquid. The densitometer establishes a communication connection with the host via Bluetooth. A variety of sensors are installed in the densitometer, and the data detected by the various sensors are transmitted to the host via Bluetooth. The host can set the data acquisition period and correct the data. The bottom of the densitometer is in the shape of an inverted frustum of a cone. A counterweight is arranged around the bottom of the densitometer to ensure the stable state of the densitometer. A temperature sensor is installed on the bottom surface of the densitometer, and the temperature sensor is connected to the control chip inside the densitometer. Scale lines are provided on the surface of the densitometer. The scale lines at different positions represent different density values. Metal strips are pasted on the scale lines, and the metal strips are connected to the control chip inside the densitometer. The metal strips and the scale lines on the densitometer have a one-to-one correspondence. The metal strips below the liquid level are short-circuited, and the metal strips above the liquid level are connected to the control chip. The control chip can sense the position of the metal strip corresponding to the current liquid level. A first Bluetooth module and a storage battery are installed inside the densitometer. The first Bluetooth module is connected to the control chip, and the storage battery is connected to the control chip. The control chip supplies power to the first Bluetooth module and the metal strips outside the densitometer. A waterproof charging interface is provided at the top of the densitometer, and the charging interface is connected to the storage battery. A second Bluetooth module, a memory, a central processing unit, and a display screen are provided inside the host. The second Bluetooth module establishes a Bluetooth connection with the first Bluetooth module inside the densitometer. The central processing unit corrects each reading of the densitometer according to the soil densitometer correction table. The memory is used to store the corrected densitometer readings. The display screen is connected to the central processing unit to display the corrected densitometer readings. The central processing unit can set the period for the densitometer to read the density value. Setting buttons are installed on the host, and the data reading period of the densitometer is adjusted by using the setting buttons. The host is provided with a data export interface, and the density values read within the set period can be exported according to the ID numbers of different densitometers.

2. A measurement method for automatically measuring the density of a liquid, implemented in the device as described in claim 1, characterized in that, The method is as follows: Place the densitometer in the liquid. The densitometer is suspended in the liquid, and different density liquids correspond to different suspension depths of the densitometer. Use the central processing unit inside the host to set the period for automatically reading the density value, and the set period is sent to the control chip inside the densitometer via Bluetooth. The part of the metal strip on the densitometer in the liquid is short-circuited, and the part above the liquid level is conductive. The control chip senses the scale value corresponding to the current liquid level. The first Bluetooth module inside the densitometer establishes a connection with the second Bluetooth module inside the host, and sends the read density data and liquid temperature data to the central processing unit inside the host. The host can connect multiple densitometers simultaneously, and record the collected data according to the ID information of different densitometers. The central processing unit corrects each reading of the densitometer according to the soil densitometer correction table, and the corrected densitometer readings are transmitted to the memory for storage. The display screen on the host can display the corrected densitometer readings, and the density meter readings and liquid temperature data within the set period can be exported through the data export interface.

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