Multifunctional automatic calibration device for glass measuring instruments

Abstract

The present invention relates to a multifunctional glass measuring instrument automatic calibration device and a calibration method, wherein the multifunctional glass measuring instrument automatic calibration device comprises: a first calibration station for calibrating a first glass measuring instrument, a second calibration station for calibrating a second glass measuring instrument and located on one side of the first calibration station, a first lifting mechanism, a second lifting mechanism, a lower computer for collecting data and transmitting control signals, and an upper computer for sending control signals and obtaining data collected by the lower computer and determining calibration results. The multifunctional glass measuring instrument automatic calibration device and calibration method of the present invention can be used for automatic calibration of upper and lower opening type and single-opening type glass measuring instruments at the same time, with high detection efficiency, small error and high calibration accuracy.

Description

Technical Field

[0001] The invention relates to the technical field of glass calibration, and in particular to a multifunctional automatic calibration device for glass measuring instruments. Background Art

[0002] Commonly used glass measuring instruments are precision liquid measuring instruments and are widely used in various analytical experiments. Whether their values ​​are reliable directly affects the accuracy of analytical test results. To ensure accurate liquid measurement, they need to be manually tested based on the measurement method. This is currently the most reliable and accurate verification method. However, the low efficiency of manual testing makes the verification process of glass measuring instruments slow and unable to meet production needs. In addition, manual testing is prone to errors, resulting in low verification accuracy. Summary of the invention

[0003] In order to solve the above-mentioned technical problems of low efficiency and easy error in manual detection, the present invention provides a multifunctional automatic calibration device for glass measuring instruments.

[0004] According to a first aspect of the present invention, a multifunctional automatic calibration device for glass measuring instruments disclosed in the present invention comprises: a first calibration station for calibrating a first glass measuring instrument, the first calibration station comprising: a first water reservoir, a peristaltic pump, a sealing valve connected to the peristaltic pump and located above the first water reservoir, a first photoelectric sensor and a second photoelectric sensor for sensing the highest and lowest measuring liquid levels of the first glass measuring instrument; a second calibration station for calibrating a second glass measuring instrument and located on one side of the first calibration station, the second calibration station comprising: a second water reservoir, a water inlet pump, a water inlet pipe connecting the second water reservoir and the water inlet pump, a solenoid valve arranged at the water outlet end of the water inlet pipe, a weighing piece arranged below the water outlet end of the water inlet pipe, and a third photoelectric sensor for sensing the highest measuring liquid level of the second glass measuring instrument; a first lifting mechanism for controlling the vertical lifting of the first glass measuring instrument and the water outlet end of the water inlet pipe; a second lifting mechanism for controlling the vertical lifting of the sealing valve; a lower computer for collecting data and transmitting control signals; and a host computer for sending control signals and obtaining data collected by the lower computer and determining the calibration results.

[0005] According to one embodiment of the present invention, the first lifting mechanism includes a first stepper motor, a first bracket and a fixing clamp for fixing the first glass measuring vessel, the first bracket is vertically arranged at the output end of the first stepper motor, and the fixing clamp and the water outlet end of the water inlet pipe are fixedly arranged on the first bracket.

[0006] According to one embodiment of the present invention, the second lifting mechanism includes a second stepping motor and a second bracket, the second bracket is vertically arranged at the output end of the second stepping motor, and the sealing valve is arranged on the second bracket.

[0007] According to one embodiment of the present invention, the first water tank and the second water tank are respectively provided with a first temperature sensor and a second temperature sensor for collecting water temperature.

[0008] According to one embodiment of the present invention, the multifunctional glass measuring vessel automatic calibration device further comprises: an image acquisition and recognition device for acquiring image information of the first glass measuring vessel and the second glass measuring vessel.

[0009] According to a second aspect of the present invention, the present invention discloses a calibration method for the multifunctional glass measuring instrument automatic calibration device according to the first aspect, the calibration method comprising the following steps:

[0010] A1: Fix the first glass measuring vessel on the first lifting mechanism;

[0011] A2: The image information of the first glass measuring vessel is collected by an image acquisition and recognition device and transmitted to a host computer to obtain parameters of the first glass measuring vessel;

[0012] A3: The first lifting mechanism controls the first glass measuring vessel to descend until its bottom extends into the first water storage tank;

[0013] A4: The second lifting mechanism controls the sealing valve to descend until it is tightly connected with the top opening of the first glass measuring vessel;

[0014] A5: Start the peristaltic pump to form negative pressure in the first glass measuring vessel to pump water from the first water storage tank;

[0015] A6: The liquid level in the first glass measuring vessel rises until it blocks the sensing light of the first photoelectric sensor, and the peristaltic pump is turned off;

[0016] A7: The second lifting mechanism controls the sealing valve to rise until it is separated from the top opening of the first glass measuring vessel, and the liquid level in the first glass measuring vessel drops until the second photoelectric sensor is turned on;

[0017] A8: The lower computer collects the time difference between the liquid level in the first glass measuring vessel rising from the lowest measured liquid level to the highest measured liquid level and the pumping speed of the peristaltic pump; and

[0018] A9: The upper computer obtains the time difference and pumping speed collected by the lower computer, calculates the capacity of the first glass measuring vessel and compares it with the parameters obtained in A2 to obtain the verification result.

[0019] According to a third aspect of the present invention, the present invention discloses a calibration method for the multifunctional glass measuring instrument automatic calibration device according to the first aspect, the calibration method comprising the following steps:

[0020] B1: Place the second glass measuring vessel on the weighing piece, and the lower computer collects the first weight parameter of the second glass measuring vessel;

[0021] B2: The image information of the second glass measuring vessel is collected by the image acquisition and recognition device and transmitted to the host computer to obtain the parameters of the second glass measuring vessel;

[0022] B3: The second lifting mechanism controls the water outlet end of the water inlet pipe to descend until it extends into the opening of the second glass measuring vessel;

[0023] B4: Open the solenoid valve, pump the pure water from the second water tank into the second glass measuring vessel through the water inlet pump, the liquid level in the second glass measuring vessel rises until it blocks the sensing light of the third photoelectric sensor, and then close the solenoid valve;

[0024] B5: The lower computer collects the second weight parameter of the weighing piece; and

[0025] B6: The upper computer obtains the first weight parameter and the second weight parameter collected by the lower computer, calculates the capacity weight parameter of the second glass measuring vessel, and compares it with the parameter of the second glass measuring vessel obtained in B2 to obtain the verification result.

[0026] The multifunctional automatic glass measuring instrument calibration device and calibration method of the present invention can be used for automatic calibration of upper and lower opening type and single-opening type glass measuring instruments at the same time, and has high detection efficiency, small error and high calibration accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the multifunctional automatic calibration device for glass measuring instruments in the present invention.

[0028] Figure 2 It is a control block diagram of the multifunctional automatic calibration device for glass measuring instruments in the present invention. DETAILED DESCRIPTION

[0029] The multifunctional automatic calibration device and calibration method for glass measuring instruments of the present invention will be further described in detail below in conjunction with specific embodiments and drawings.

[0030] Example 1.

[0031] Please refer to Figures 1 to 2 The figures are respectively a schematic diagram of the structure and a control block diagram of the multifunctional glass measuring instrument automatic calibration device of the present invention.

[0032] The present invention provides a multifunctional automatic glass measuring instrument calibration device, comprising a first calibration station 10, a second calibration station 20 located at one side of the first calibration station 10, a first lifting mechanism 30, a second lifting mechanism 40, a lower computer 50 and an upper computer 60.

[0033] The first calibration station 10 is used to calibrate the first glass measuring vessel 70. The first glass measuring vessel 70 is a common glass measuring vessel with an upper and lower opening structure, such as a pipette, a burette, etc. The first calibration station 10 includes a first water reservoir 101, a peristaltic pump 102, a sealing valve 103 connected to the peristaltic pump 102 and located above the first water reservoir 101, a first photoelectric sensor 104 and a second photoelectric sensor 105 for sensing the highest and lowest measuring liquid levels of the first glass measuring vessel 70. The first water reservoir 101 is used to store pure water. When the sealing valve 103 is tightly connected to the opening of the first glass measuring vessel 70, the first glass measuring vessel 70 is operated to extract pure water. The sealing valve 103 uses a silicone sealing pad needle check valve to better match the opening of the first glass measuring vessel 70, and the sealing effect is better after connection. The first photoelectric sensor 104 and the second photoelectric sensor 105 are designed to be non-contact with the first glass measuring vessel 70, and the first photoelectric sensor 104 and the second photoelectric sensor 105 are moved along with the movement of the first glass measuring vessel 70, thereby ensuring that the highest measuring liquid level and the lowest measuring liquid level of the first glass measuring vessel 70 remain unchanged at all times, thereby improving the calibration accuracy.

[0034] The second calibration station 20 is used to calibrate the second glass measuring vessel 80. The second glass measuring vessel 80 is a common glass measuring vessel with a single-mouth structure, such as a measuring cylinder, a measuring cup, etc. The second calibration station 20 includes a second water tank 201, a water inlet pump 202, a water inlet pipe 203 connecting the second water tank 201 and the water inlet pump 202, a solenoid valve 204 arranged at the outlet end of the water inlet pipe 203, a weighing piece 205 arranged below the outlet end of the water inlet pipe 203, and a third photoelectric sensor 206 for sensing the highest measuring liquid level of the second glass measuring vessel 80. The second water tank 201 is used to store pure water, the water inlet pump 202 extracts pure water in the second storage water tank 201 through the water inlet pipe 203, and the solenoid valve 204 is used to control the water outlet end of the water inlet pipe 2. The weighing piece 205 is mainly used to weigh the weight of the pure water in the second glass measuring vessel 80. The third photoelectric sensor 206 is designed to be non-contact with the second glass measuring vessel 80.

[0035] The first lifting mechanism 30 is mainly used to control the vertical lifting of the first glass measuring vessel 70 and the water outlet end of the water inlet pipe 203. The first lifting mechanism 30 mainly includes a first stepper motor 301, a first bracket 302, and a fixing fixture for fixing the first glass measuring vessel 70, wherein the first bracket 302 is vertically arranged at the output end of the first stepper motor 301, and the fixing fixture and the water outlet end of the water inlet pipe 203 are fixedly arranged on the first bracket 302, wherein the fixing fixture is mainly used to fix the first glass measuring vessel 70. The first glass measuring vessel 70 is installed on the first bracket 302 through the fixing fixture, and the first bracket 302 is driven by the first stepper motor 301 to vertically lift and lower, thereby bringing the first glass measuring vessel 70 and the water outlet end of the water inlet pipe 203 to move.

[0036] The second lifting mechanism 40 includes a second stepping motor 401 and a second bracket 402. The second bracket 402 is vertically arranged at the output end of the second stepping motor 401, and the sealing valve 103 is arranged on the second bracket 402. The second stepping motor 401 drives the second bracket 402 to lift vertically, thereby driving the sealing valve 103 to lift vertically.

[0037] The lower computer 50 is mainly used to collect various data of the first inspection station 10, the second inspection station 20, the first lifting mechanism 30, and the second lifting mechanism 40, and transmit the control signal sent by the upper computer 60. The lower computer 50 can adopt a single chip microcomputer of model SMT32.

[0038] The upper computer 60 is mainly used to send control signals and obtain data collected by the lower computer 50, and determine the calibration results of the first glass measuring instrument 70 or the second glass measuring instrument 80 according to the acquired data. The upper computer 60 adopts an intelligent control terminal such as a computer.

[0039] In order to further improve the accuracy of the calibration, a first temperature sensor 106 and a second temperature sensor 207 for collecting water temperature are respectively provided in the first water tank 101 and the second water tank 201. The lower computer 50 collects the water temperature in the first water tank 101 and the second water tank 201, so that the upper computer 60 can calculate the quality of pure water in the first glass measuring vessel 70 or the second glass measuring vessel 80 more accurately.

[0040] The multifunctional glass measuring instrument automatic calibration device also includes an image acquisition and recognition device 90 for collecting image information of the first glass measuring instrument 70 and the second glass measuring instrument 80, wherein the image acquisition and recognition device 90 obtains corresponding image data by photographing the first glass measuring instrument 70 or the second glass measuring instrument 80, and the host computer 60 obtains the corresponding parameters of the first glass measuring instrument 70 or the second glass measuring instrument 80 by analyzing the image data, such as the specifications and models, materials, and tolerances of the glass measuring instruments, and compares and analyzes the above parameters with the test data obtained by the host computer 60 to obtain the calibration results.

[0041] Example 2.

[0042] This embodiment provides a calibration method for a multifunctional glass measuring instrument automatic calibration device, the calibration method comprising the following steps:

[0043] A1: Fix the first glass measuring container 70 to the first bracket 302 of the first lifting mechanism 30 by means of a fixing fixture.

[0044] A2: The image information of the first glass measuring vessel 70 is collected by the image collection and recognition device 90 and transmitted to the host computer 60 to obtain the parameters of the first glass measuring vessel 70 , including specifications and models, materials, and tolerances.

[0045] A3: The first lifting mechanism 30 drives the first bracket 302 to descend through the first stepper motor 301, thereby controlling the first glass measuring vessel 70 to descend until the bottom of the first glass measuring vessel 70 extends into the first water storage tank 101. At this time, the liquid level in the first water storage tank 101 overflows the bottom opening of the bottom of the first glass measuring vessel 70.

[0046] A4: The second lifting mechanism 40 drives the second bracket 402 to descend through the second stepping motor 401 , thereby controlling the sealing valve 103 to descend until it is tightly connected with the top opening of the first glass measuring vessel 70 .

[0047] A5: Start the peristaltic pump 102 to form negative pressure in the first glass measuring vessel 70 and pump water from the first water storage tank 101.

[0048] A6: The liquid level in the first glass measuring vessel 70 rises until it blocks the sensing light of the first photoelectric sensor 104 , and the peristaltic pump 102 is turned off.

[0049] A7: The second lifting mechanism 40 resets and controls the sealing valve 103 to rise until the sealing valve 103 is separated from the top opening of the first glass measuring vessel 70, and the liquid level in the first glass measuring vessel 70 drops until the second photoelectric sensor 104 is turned on.

[0050] A8: The lower computer 50 collects the time difference between the liquid level in the first glass measuring vessel 70 rising from the lowest measured liquid level to the highest measured liquid level and the pumping speed of the first glass measuring vessel 70 , wherein the pumping speed is obtained by collecting the amount of water pumped by the peristaltic pump 102 .

[0051] A9: The upper computer 60 obtains the time difference and the pumping speed collected by the lower computer 50, calculates the capacity of the first glass measuring vessel 70 and compares it with the parameters obtained in A2 to obtain the verification result.

[0052] Implementation 3.

[0053] This embodiment provides a calibration method for a multifunctional glass measuring instrument automatic calibration device, the calibration method comprising the following steps:

[0054] B1: The second glass measuring vessel 80 is placed on the weighing member 205 , and the lower computer 50 collects the first weight parameter of the second glass measuring vessel 80 .

[0055] B2: The image information of the second glass measuring instrument 80 is collected by the image collection and recognition device 90 and transmitted to the host computer 60 to obtain the parameters of the second glass measuring instrument 80, including specifications and models, materials, and tolerances.

[0056] B3: The first lifting mechanism 30 drives the first bracket 302 to descend through the first stepper motor 301 to control the water inlet pipe 203 to descend until the water outlet end of the water inlet pipe 203 extends into the opening of the second glass measuring vessel 80.

[0057] B4: Open the solenoid valve 204, and use the water inlet pump 202 to pump the pure water in the second water tank 201 into the second glass measuring vessel 80 through the water inlet pipe 203. The liquid level in the second glass measuring vessel 80 rises until it blocks the sensing light of the third photoelectric sensor, and then close the solenoid valve 204 to stop pumping water.

[0058] B5: The lower computer 50 collects the second weight parameter of the weighing piece 205 .

[0059] B6: The upper computer 60 obtains the first weight parameter and the second weight parameter collected by the lower computer 50, calculates the capacity weight parameter of the second glass measuring vessel 80, and compares it with the parameter of the second glass measuring vessel 80 obtained in step B2 to obtain the verification result.

[0060] In summary, the multifunctional glass measuring instrument automatic calibration device and calibration method of the present invention can be used for automatic calibration of both upper and lower opening type and single-opening type glass measuring instruments, with high detection efficiency, small error and high calibration accuracy.

[0061] In the description of the present invention, it is necessary to understand that terms such as "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0062] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0063] Although the present invention is described in conjunction with the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and changes according to the above content. Therefore, all such substitutions, improvements and changes are included in the spirit and scope of the present invention.

Claims

1. A multifunctional automatic calibration device for glass measuring instruments, characterized in that: include: A first calibration station for calibrating a first glass measuring vessel, the first calibration station comprising: a first water reservoir, a peristaltic pump, a sealing valve connected to the peristaltic pump and located above the first water reservoir, a first photoelectric sensor for sensing a maximum measurement liquid level and a minimum measurement liquid level of the first glass measuring vessel, and a second photoelectric sensor; A second calibration station for calibrating a second glass measuring vessel and located on one side of the first calibration station, the second calibration station comprising: a second water storage tank, a water inlet pump, a water inlet pipe connecting the second water storage tank and the water inlet pump, a solenoid valve disposed at the water outlet end of the water inlet pipe, a weighing piece disposed below the water outlet end of the water inlet pipe, and a third photoelectric sensor for sensing the highest measuring liquid level of the second glass measuring vessel; A first lifting mechanism for controlling the vertical lifting of the first glass measuring vessel and the water outlet end of the water inlet pipe, the first lifting mechanism comprising a first stepper motor, a first bracket and a fixing fixture for fixing the first glass measuring vessel, the first bracket being vertically arranged at the output end of the first stepper motor, the fixing fixture and the water outlet end of the water inlet pipe being fixedly arranged on the first bracket; A second lifting mechanism for controlling the vertical lifting of the sealing valve, the second lifting mechanism comprising a second stepping motor and a second bracket, and the sealing valve is arranged on the second bracket; A lower computer for collecting data and transmitting control signals; and A host computer for sending control signals and obtaining the collected data of the lower computer and determining the verification results; The first glass measuring vessel is a structure with upper and lower openings; The calibration method of the multifunctional glass measuring instrument automatic calibration device comprises the following steps: A1: Fix the first glass measuring vessel on the first lifting mechanism; A2: The image information of the first glass measuring vessel is collected by an image acquisition and recognition device and transmitted to a host computer to obtain parameters of the first glass measuring vessel; A3: The first lifting mechanism controls the first glass measuring vessel to descend until its bottom opening extends into the first water storage tank; A4: The second lifting mechanism controls the sealing valve to descend until it is tightly connected with the top opening of the first glass measuring vessel; A5: Start the peristaltic pump to form negative pressure in the first glass measuring vessel to pump water from the first water storage tank; A6: The liquid level in the first glass measuring vessel rises until it blocks the sensing light of the first photoelectric sensor, and the peristaltic pump is turned off; A7: The second lifting mechanism controls the sealing valve to rise until it is separated from the top opening of the first glass measuring vessel, and the liquid level in the first glass measuring vessel drops until the second photoelectric sensor is turned on; A8: The lower computer collects the time difference between the liquid level in the first glass measuring vessel rising from the lowest measured liquid level to the highest measured liquid level and the pumping speed of the peristaltic pump; and A9: The upper computer obtains the time difference and pumping speed collected by the lower computer, calculates the capacity of the first glass measuring vessel and compares it with the parameters obtained in A2 to obtain the verification result.

2. The multifunctional automatic glass measuring instrument calibration device according to claim 1, characterized in that: The first water tank and the second water tank are respectively provided with a first temperature sensor and a second temperature sensor for collecting water temperature.

3. The multifunctional automatic glass measuring instrument calibration device according to claim 1, characterized in that: It also includes: an image acquisition and recognition device for acquiring image information of the first glass measuring vessel and the second glass measuring vessel.

4. The multifunctional automatic glass measuring instrument calibration device according to claim 1, characterized in that: The verification method further comprises the following steps: B1: Place the second glass measuring vessel on the weighing piece, and the lower computer collects the first weight parameter of the second glass measuring vessel; B2: The image information of the second glass measuring vessel is collected by the image acquisition and recognition device and transmitted to the host computer to obtain the parameters of the second glass measuring vessel; B3: The second lifting mechanism controls the water outlet end of the water inlet pipe to descend until it extends into the opening of the second glass measuring vessel; B4: Open the solenoid valve, pump the pure water from the second water tank into the second glass measuring vessel through the water inlet pump, the liquid level in the second glass measuring vessel rises until it blocks the sensing light of the third photoelectric sensor, and then close the solenoid valve; B5: The lower computer collects the second weight parameter of the weighing piece; and B6: The upper computer obtains the first weight parameter and the second weight parameter collected by the lower computer, calculates the capacity weight parameter of the second glass measuring vessel, and compares it with the parameter of the second glass measuring vessel obtained in B2 to obtain the verification result.

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