Automatic preparation equipment for standard liquid

Abstract

The utility model relates to the technical field of sensor detection, and discloses automatic preparation equipment for standard liquid, which comprises a liquid mixing module, a liquid preparation module, a calibration module and a controller. The liquid mixing module comprises a mixing cavity; the liquid preparation module comprises a plurality of liquid inlet water paths, the liquid inlet water paths are communicated in the mixing cavity, and different liquid inlet water paths are respectively connected with standard liquid; a mass flow meter and a valve are arranged on the liquid inlet waterway; the calibration module is provided with a calibration cavity; and the calibration cavity is communicated with the mixing cavity. According to the automatic preparation equipment for the standard liquid, the mass flow meters and the valves on the plurality of liquid inlet water paths of the liquid preparation module are arranged, so that the accurate proportioning control of the standard liquid can be realized, and the accuracy of the standard liquid is improved; meanwhile, through the arrangement of the liquid mixing module, the mixing effect of various different standard liquids can be provided, the precision of the standard liquids is further improved, and a guarantee is provided for subsequent sensor calibration.

Description

Technical Field

[0001] The utility model relates to the technical field of sensor detection, in particular to an automatic configuration device for standard liquid. Background Art

[0002] Before leaving the factory, sensors typically need to be calibrated to determine the precise relationship between their output and input. Sensor calibration involves collecting calibration data from sensors in different standard fluid environments. However, traditional calibration methods face several significant challenges:

[0003] Traditional methods of manually preparing standard solutions often struggle to achieve high precision because manual operation is easily affected by various factors, such as the accuracy of the measuring tools and the operator's proficiency. This can lead to errors in the proportions and dosages of the standard solutions, which in turn affect the accuracy of the calibration. When multiple standard solutions need to be mixed to create a test environment with a specific concentration or composition, ensuring that these standard solutions are fully and evenly mixed in the mixing chamber becomes a challenge. An uneven mixture can cause unstable signals received by the sensor during the calibration process, thus affecting the reliability of the calibration results. Furthermore, manual solution preparation is inefficient and has high production costs. Furthermore, the prepared standard solutions are all chemicals, making manual solution preparation unsafe. Utility Model Content

[0004] The main purpose of this utility model is to provide an automated standard liquid preparation device, aiming to at least address the current technical issues of difficulty in accurately controlling the ratio and dosage of standard liquids during sensor calibration, as well as the difficulty in controlling the dispersion of multiple standard liquids in the mixing chamber, which affects the accuracy and reliability of calibration results, and the low efficiency, high cost, and poor safety of manual liquid preparation. Through a series of innovative designs, this utility model achieves precise control of the ratio and dosage of standard liquids, efficient mixing of multiple standard liquids, and a high degree of automation of the calibration process, thereby improving production efficiency and safety and reducing production costs.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] An automatic configuration device for standard liquid comprises a liquid mixing module, a liquid dispensing module, a calibration module and a controller.

[0007] A liquid mixing module, comprising a mixing chamber, wherein the mixing chamber is used to mix the standard liquid;

[0008] A liquid dispensing module, configured to add a standard liquid to the mixing chamber; the liquid dispensing module comprises a plurality of liquid inlet waterways, each of which is connected to the mixing chamber, and each of which is connected to a standard liquid; a mass flow meter and a valve are provided on each of the liquid inlet waterways; the mass flow meter is configured to regulate the flow of the standard liquid; and the valve is configured to regulate the flow between the liquid inlet waterway and the standard liquid.

[0009] A calibration module is provided with a calibration cavity; the calibration cavity is connected to the mixing cavity;

[0010] A controller is electrically connected to the liquid mixing module, the mass flow meter and the valve.

[0011] In one embodiment, the standard liquid connected to at least one liquid inlet water line is pure water.

[0012] In one embodiment, a cleaning module is further included. The cleaning module includes at least one cleaning water channel. A solenoid valve is provided on the cleaning water channel, one end of which is connected to the mixing chamber and the other end is connected to the cleaning fluid. The solenoid valve is electrically connected to the controller.

[0013] In one embodiment, a liquid level sensor is further included. The liquid level sensor is located in the calibration cavity and is electrically connected to the controller.

[0014] In one embodiment, a pump body is provided on the liquid inlet water path, and is used to pump the standard liquid into the mixing chamber, and the pump body is controllably connected to the controller.

[0015] In one embodiment, the system further includes a liquid analysis module electrically connected to the controller for detecting the composition and concentration of the mixed liquid in the mixing chamber.

[0016] In one embodiment, the liquid mixing module includes a driving source and a spoiler. The spoiler is disposed in a mixing chamber and is used to guide the mixed liquid in the mixing chamber to mix. The driving source can be driven to connect to the spoiler.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The automated standard liquid dispensing device of the present invention, through the provision of mass flow meters and valves on multiple liquid inlet waterways of the dispensing module, can achieve precise control of the standard liquid ratio and improve the accuracy of the standard liquid. At the same time, through the provision of a liquid mixing module, it can provide a mixing effect of multiple different standard liquids, further improving the accuracy of the standard liquid, providing a guarantee for subsequent sensor calibration, and can effectively address the technical problems of poor accuracy, low efficiency, high cost and poor safety of manual liquid dispensing during current sensor calibration before shipment. The utility model achieves precise control of the standard liquid ratio and dosage, efficient mixing of multiple standard liquids, and a high degree of automation of the calibration process, thereby improving production efficiency and safety and reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0020] Figure 1 The utility model is a schematic diagram of the module structure of an automatic configuration device for standard liquid in one embodiment.

[0021] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0023] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0024] See also Figure 1The present invention is an automated standard liquid configuration device, which aims to solve the problems of difficulty in accurately controlling the ratio and dosage of standard liquids during sensor calibration, as well as difficulty in controlling the dispersion of multiple standard liquids in a mixing chamber. Specifically, the automated standard liquid configuration device of the present invention includes a liquid mixing module, a liquid dispensing module, a calibration module, and a controller. The liquid mixing module includes a mixing chamber for mixing standard liquids; the liquid dispensing module is used to add standard liquids into the mixing chamber; the calibration module is provided with a calibration chamber; and the calibration chamber is connected to the mixing chamber.

[0025] Specifically, the sensor used for calibration is located within the calibration chamber of the calibration module and is connected to a controller via a data transceiver module. During the calibration process, the sensor generates relevant data that can be transmitted to the controller via the data transceiver module. The controller then calibrates the sensor based on this data. During the calibration process, the prepared standard liquid mixture is completely submerged in the calibration chamber. In other words, the final standard liquid prepared by the automated standard liquid dispensing device of the present invention is ultimately stored in the calibration chamber, calibrating the sensor to be calibrated.

[0026] It should be noted that the liquid dispensing module includes multiple liquid inlet waterways, which are connected to the mixing chamber, and different liquid inlet waterways are respectively connected to standard liquids. A mass flow meter and a valve are provided on the liquid inlet waterway. The mass flow meter is used to regulate the flow of the standard liquid. The valve is used to regulate the on-off between the liquid inlet waterway and the standard liquid. It can be understood that the valve and the mass flow meter are controllably connected to the controller to regulate the working status of the mass flow meter and the valve through the controller. It should be noted that the standard liquid connected to at least one liquid inlet waterway is pure water, and the other liquid inlet waterways are respectively connected to different categories of standard liquids. In specific implementation, it is distinguished according to the calibration requirements required by the current sensor. For a single standard solution, only one pure water and one standard liquid need to be configured to automatically dispense; for a mixed solution composed of multiple different standard liquids, the standard liquids of multiple liquid inlet waterways can be controlled to be automatically configured.

[0027] Furthermore, the liquid mixing module is arranged in the mixing chamber, and is used to mix the standard liquid added to the mixing chamber. It should be noted that an on-off valve can be provided at the connection point between the mixing chamber and the calibration chamber, and the on-off valve can be electrically connected to the controller, so as to control the amount of the standard liquid in the calibration chamber, and also to enable the standard liquid in the mixing chamber to be fully mixed. Specifically, the liquid mixing module may include a driving source and a drainage member. The drainage member is arranged in the mixing chamber, and is used to guide the mixed liquid in the mixing chamber to be mixed. The driving source can drive the connecting drainage member. The specific implementation method of the driving source and the drainage member is not limited, and it can enable different standard liquids to be fully mixed in the mixing chamber. For example, in some embodiments, the driving source and the drainage member can be a motor and a stirring rod; for another example, in some embodiments, the driving source and the drainage member can also be a water pump and a water pipe, and the water pump and the water pipe are arranged in the mixing chamber, and mixing can also be achieved by turbulence.

[0028] Furthermore, in certain embodiments, to enhance the performance of the device during actual use, a waste liquid collection tank may be connected to the bottom of the calibration chamber, with a control valve positioned between the waste liquid collection tank and the calibration chamber. It will be appreciated that the control valve is connected to a controller, which controls its state. Therefore, after the sensor is calibrated, the control valve can be opened to drain waste liquid from the calibration tank into the waste liquid collection tank.

[0029] Since pure water is provided in multiple liquid inlet water channels, the control valve of the pure water water channel is opened to clean the water channel, the mixing chamber and the calibration chamber. After cleaning, the automated configuration process of the next standard liquid is continued. Of course, considering that some standard liquids are not easy to clean with pure water, in some embodiments, a cleaning module can also be provided. The cleaning module includes at least one cleaning water channel. A solenoid valve is provided on the cleaning water channel, and one end is connected to the mixing chamber, and the other end is connected to the cleaning liquid. The solenoid valve is electrically connected to the controller. Cleaning can be better achieved by using a cleaning liquid corresponding to the standard liquid.

[0030] Furthermore, a liquid level sensor may be provided in the calibration chamber and electrically connected to the controller to sense the liquid content in the calibration chamber and prevent excessive liquid in the calibration chamber.

[0031] Furthermore, a pump body is provided on the liquid inlet water path, which is used to pump the standard liquid into the mixing chamber, and the pump body is controllably connected to the controller.

[0032] In certain embodiments, a liquid analysis module may be positioned within the mixing chamber. The module is electrically connected to the controller and is configured to monitor the composition and concentration of the mixed liquid within the mixing chamber. If the composition and concentration of the mixed liquid within the mixing chamber do not meet preset specifications, the controller analyzes the mixed liquid and replenishes the chamber with the appropriate standard solution by controlling the valve and mass flow meter.

[0033] To sum up, the automated standard liquid configuration equipment of the present invention can achieve precise control of the standard liquid ratio and improve the accuracy of the standard liquid through the setting of mass flow meters and valves on multiple liquid inlet water channels of the liquid configuration module; at the same time, through the setting of the liquid mixing module, it can provide a mixing effect of multiple different standard liquids, further improve the accuracy of the standard liquid, provide a guarantee for subsequent sensor calibration, and effectively improve the technical problem of poor accuracy in the calibration of current sensors before leaving the factory.

[0034] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An automated standard solution preparation device, characterized in that: include: A liquid mixing module, comprising a mixing chamber, wherein the mixing chamber is used to mix the standard liquid; a liquid preparation module, used for adding a standard liquid into the mixing chamber; The liquid dispensing module includes multiple liquid inlet waterways, each of which is connected to the mixing chamber, and different liquid inlet waterways are respectively connected to a standard liquid; a mass flow meter and a valve are provided on the liquid inlet waterway; the mass flow meter is used to control the flow of the standard liquid; the valve is used to control the connection between the liquid inlet waterway and the standard liquid; a calibration module, which is provided with a calibration cavity; the calibration cavity is connected to the mixing cavity; and A controller is electrically connected to the liquid mixing module, the mass flow meter and the valve.

2. The automated standard solution configuration device according to claim 1, characterized in that: The standard liquid connected to at least one of the liquid inlet water channels is pure water.

3. The automated standard solution configuration device according to claim 1, characterized in that: It also includes a cleaning module; the cleaning module includes at least one cleaning water channel; an electromagnetic valve is provided on the cleaning water channel, one end of which is connected to the mixing chamber and the other end is connected to the cleaning liquid; the electromagnetic valve is electrically connected to the controller.

4. The automated standard solution configuration device according to claim 1, characterized in that: It also includes a liquid level sensor, which is located in the calibration cavity and is electrically connected to the controller.

5. The automated standard solution configuration device according to claim 1, characterized in that: A pump body is provided on the liquid inlet waterway; the pump body is used to draw the standard liquid into the mixing chamber, and the pump body is controllably connected to the controller.

6. The automated standard solution configuration device according to claim 1, characterized in that: It also includes a liquid analysis module, which is electrically connected to the controller and is used to detect the composition and concentration of the mixed liquid in the mixing chamber.

7. The automated standard solution configuration device according to claim 1, characterized in that: The liquid mixing module includes a driving source and a spoiler; the spoiler is arranged in the mixing chamber and is used to guide the mixed liquid in the mixing chamber to mix; the driving source can be driven to connect to the spoiler.

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