CN111537047A - System for automatic weight monitoring and intelligent early warning of liquid nitrogen tank and use method - Google Patents
System for automatic weight monitoring and intelligent early warning of liquid nitrogen tank and use method Download PDFInfo
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- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G17/00—Apparatus for or methods of weighing material of special form or property
- G01G17/04—Apparatus for or methods of weighing material of special form or property for weighing fluids, e.g. gases, pastes
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Abstract
The invention provides a system for automatic weight monitoring and intelligent early warning of a liquid nitrogen tank and a use thereof, wherein the system comprises: n base sensors, a controller and an early warning device; the base sensor acquires a monitoring time point, an event type corresponding to the time point and weight data of the liquid nitrogen tank corresponding to the time point and transmits the data to the controller; the early warning device receives the data sent by the controller and analyzes the data of the liquid nitrogen tank to determine whether the content distance of the liquid nitrogen in the liquid nitrogen tank reaches the time required by a safety line and a warning line and generates early warning information. According to the scheme of the invention, the daily consumption of the liquid nitrogen is calculated by regularly weighing in an experimental environment, and then the time points of adding and purchasing the liquid nitrogen are calculated, so that the aims of automatic monitoring and intelligent early warning can be achieved. The uncertainty and instability of manual monitoring are avoided.
Description
Technical Field
The invention relates to the field of data information management, in particular to a system for automatically monitoring the weight of a liquid nitrogen tank and intelligently early warning and a using device.
Background
The liquid nitrogen is mainly used as a refrigerant in biological laboratories and medicine, and is used for rapidly freezing biological tissues or experimental samples and preventing the tissues or the samples from changing or rotting and deteriorating. Liquid nitrogen is stored standing indoors, usually from a liquid nitrogen tank. Biological tissues or experimental samples stored in a liquid nitrogen tank are often extremely rare and precious, and liquid nitrogen is extremely volatile during the use or storage process in a laboratory, and once the liquid nitrogen is volatilized and not supplemented in time, the temperature is increased to further change the biological tissues or the experimental samples, so that irreparable loss is caused. Therefore, scientific monitoring management of liquid nitrogen is required.
At present, most of intelligent liquid nitrogen monitoring systems adopt liquid nitrogen automatic supply management systems imported from abroad, the monitoring systems and equipment are large in size and high in price, and general laboratories do not purchase the liquid nitrogen automatic supply management equipment due to the problems of large occupied space and high capital cost.
At present, the management mode of a biological laboratory or a medical institution for liquid nitrogen is usually an extensive mode of manual monitoring, but because the change of the liquid nitrogen cannot be continuously monitored for 24 hours or the change of the liquid nitrogen is neglected due to human negligence, the change, even the decay and the deterioration of stored biological tissues or samples can be caused, and the irreparable loss is caused. Moreover, the weight of each liquid nitrogen tank varies differently due to different liquid nitrogen tanks having different weights, use frequencies and volatilization degrees. If the liquid nitrogen is added only manually and periodically, the liquid nitrogen is added too frequently, which wastes manpower and liquid nitrogen, and the liquid nitrogen is not added in time, which causes damage to the preservation of biological tissues and experimental samples. That is to say, the adding mode of the liquid nitrogen is monitored manually, and the safe, timely and effective management effect is difficult to achieve. Meanwhile, the time required for the distance of the content of the liquid nitrogen in the liquid nitrogen tank to reach a safety line and a warning line cannot be effectively calculated.
Therefore, a safe, reliable, inexpensive liquid nitrogen management system is needed.
Disclosure of Invention
In order to solve the technical problems, the invention provides a system for automatically monitoring the weight of a liquid nitrogen tank and intelligently early warning and a using method thereof, and the system and the using method are used for solving the problems that a liquid nitrogen monitoring system in the prior art is expensive and large in volume, and manpower and liquid nitrogen cannot be wasted by manually managing the liquid nitrogen, or damage is caused to the preservation of biological tissues and experimental samples; the time required for the distance of the content of the liquid nitrogen in the liquid nitrogen tank to reach a safety line and a warning line cannot be effectively calculated.
According to the first aspect of the invention, a system for automatically monitoring the weight of a liquid nitrogen tank and intelligently early warning is provided,
the system comprises N base sensors, a controller and an early warning device, wherein each base sensor corresponds to one liquid nitrogen tank;
the base sensor is a sensor arranged at the bottom of the liquid nitrogen tank, samples the weight of the liquid nitrogen tank according to a sampling interval set by a user, marks the event type as conventional sampling, and transmits sampling time, the event type corresponding to the sampling time and the weight data of the liquid nitrogen tank to the controller; the base sensor also senses events of increasing the sample tubes and reducing the sample tubes of the corresponding liquid nitrogen tank, marks the event types of increasing the sample tubes as increasing the sample tubes, marks the event types of reducing the sample tubes as reducing the sample tubes, takes the time points of the events of increasing the sample tubes and reducing the sample tubes of the liquid nitrogen tank as sampling time, and transmits the time points, the event types corresponding to the time points and the weight data of the liquid nitrogen tank after the events to the controller; the weight data of the liquid nitrogen tank comprise the weight of an empty liquid nitrogen tank, the time corresponding to the sampling time point corresponding to the weight data of the liquid nitrogen tank and the weight data of the liquid nitrogen contained in the liquid nitrogen tank;
the base sensor comprises a weight measuring module and a data transmission module, and the weight measuring module is used for measuring the weight of the liquid nitrogen tank corresponding to the base sensor; the data transmission module is used for transmitting the time point, the event type corresponding to the measuring time point and the weight data to the controller;
the controller receives an analog signal output by the base sensor, and transmits sampling time obtained from the sensor and event type and weight data corresponding to the sampling time to the early warning device after internal processing; the early warning device comprises a data receiving module, an automatic monitoring module, a data storage module, a data analysis module, an intelligent early warning module and a personalized module;
the data receiving module is used for receiving the sampling time sent by the controller and the event type and weight data corresponding to the sampling time through a wired or wireless circuit;
the automatic monitoring module is used for recording account information, label information of each liquid nitrogen tank in N liquid nitrogen tanks managed by the system and information of each liquid nitrogen tank, wherein the information of the liquid nitrogen tanks comprises a weight normal range value of the liquid nitrogen tank, intelligent early warning weight information, intelligent early warning switch information, automatic monitoring switch information and data storage time information;
the data storage module is used for storing the data received by the data receiving module, and the data storage module is used for storing historical data which are sent by the controller and acquired by base sensors of all the liquid nitrogen tanks, wherein the historical data comprise sampling time and event types and weight data corresponding to the sampling time;
the data analysis module is used for analyzing and processing the data in the data storage module;
the intelligent early warning module is used for sending early warning information to a user when the weight of the liquid nitrogen tank is not in a normal range value; the early warning information comprises an early warning liquid nitrogen tank label, early warning time, a liquid nitrogen adding time limit and a normal range value of the liquid nitrogen tank;
the display mode of the early warning information comprises screen reminding, voice and ring;
the personalized module is used for receiving control precision parameter values of the liquid nitrogen tanks set by a user, presenting real-time change conditions of the liquid nitrogen to the user according to analysis results of the data analysis module and receiving the setting of the system by the user;
the user setting the system further comprises improving and adjusting the system when using the system.
Further, the data analysis module is configured to perform analysis processing on the data in the data storage module, and includes: acquiring a control precision parameter value k of the liquid nitrogen tank, which is received by the personalized module and set by a user; the control precision parameter value is used for indicating and acquiring the number of historical data of the liquid nitrogen tank stored in the storage module; correcting the acquired k pieces of historical data; predicting the early warning time of the liquid nitrogen tank;
the correcting the acquired k pieces of history data includes: sorting the k historical data in the order of sampling time points from front to back, xiPoints in time of sampling, M, representing historical dataiIs related to the sampling time point xiCorresponding weight data of the liquid nitrogen container, i.e. weight data including the liquid nitrogen container and the liquid nitrogen, yiRepresenting historical data and sampling time point xiAt the corresponding moment, the weight data of the liquid nitrogen contained in the liquid nitrogen tank; m0The weight of the empty liquid nitrogen tank; y isi＝Mi-M0，1≤i≤k，y′iDenotes yiCorrecting the processed liquid nitrogen weight data;
if the event types of the k historical data are all conventional sampling, y is the time when no sample tube is added or reducediData is the same as the historical data set before correction, y'iAssigned a value of yi；
If the historical data of the event type marked as the added sample tube exists in the k pieces of historical data, the time point for adding the sample tube is xjWith the time point xjCorresponding liquid nitrogen weight data as yj(ii) a Correction history data yj+1,……,ykAll of y inpWherein j +1 is not less than p and not more than k, and y'pAssigned a value of yp-(yj-yj-1)；2≤j≤k；
If the historical data of the event type marked as the reduction sample tube exists, the time point of reducing the sample tube is xoWith the time point xoCorresponding liquid nitrogen weight data as yo(ii) a Correction history data yo+1,……,ykAll of y inqQ is more than or equal to o +1 and less than or equal to k, and y'qAssigned a value of yq；
Acquiring corrected historical data x of the liquid nitrogen tanki、y′iWherein i is more than or equal to 1 and less than or equal to k; fitting the weight data of the liquid nitrogen tank with the time point corresponding to the sampling time, and obtaining a relational equation between the time point corresponding to the sampling time and the corrected liquid nitrogen weight data after fitting:
wherein xiRepresents the sampling time point, y'iRepresentative and sampling time point xiThe corresponding corrected liquid nitrogen weight is fitted to determine the numerical values of the coefficients a and b,
wherein the content of the first and second substances,
the method comprises the following steps that a user sets a safety line and a warning line according to experience, use requirements and the characteristics of articles stored in a liquid nitrogen tank, wherein the safety line and the warning line can be set by the user through a personalized module, and the safety line and the warning line are fractional values; the user sets the safety line to l through the personalized modulesSetting a warning line as la(ii) a When the liquid nitrogen tank is filled with liquid nitrogen, the weight of the contained liquid nitrogen is N, and the weight of the residual liquid nitrogen in the liquid nitrogen tank is [ l ]sN,N]When it is, it indicates that the liquid nitrogen tank is remainedThe liquid nitrogen amount is safe; the weight of the residual liquid nitrogen in the liquid nitrogen tank is [ l ]aN,lsN]The residual liquid nitrogen amount of the liquid nitrogen tank has potential risk, but the alarm is not given; the weight of the residual liquid nitrogen in the liquid nitrogen tank is [0, laN]In time, the residual liquid nitrogen amount of the liquid nitrogen tank is seriously insufficient, and an alarm is required;
calculating the time t required for the weight of the liquid nitrogen in the liquid nitrogen tank to reach the safety line according to the weight data of the liquid nitrogen tank corresponding to the latest sampling time of the liquid nitrogen tank acquired by the data analysis modulesThe warning time is used as the safety line warning time of the liquid nitrogen tank; calculating the time t required for the weight of the liquid nitrogen in the liquid nitrogen tank to reach the warning lineaAnd as warning line early warning time of the liquid nitrogen tank:
further, the data analysis module stores the analyzed result in the data storage module, and simultaneously sends the analyzed result to the individuation module, and sends the calculated early warning time of reaching the safety line, the calculated early warning time of reaching the warning line and the calculated early warning time of reaching the warning line to the individuation module.
Furthermore, the personalized module can receive the setting of a user on the system, and comprises a monitoring period, an early warning interval, a weight range of each liquid nitrogen tank, an early warning switch, a monitoring switch, data storage time and a voice reminding function; the real-time change condition of the liquid nitrogen can be presented to a user according to the data information in the data storage module and the analysis and processing result obtained by the data analysis module; the monitoring time point and the corresponding weight data of each liquid nitrogen tank can be provided for a user; a weight data change curve chart of each liquid nitrogen tank; according to the calculated early warning time of reaching the safety line and the calculated early warning time of reaching the warning line, determining the predicted time of adding liquid nitrogen next time for each liquid nitrogen tank, and performing early warning before the predicted time, wherein the early warning is broadcasted every day; marking the abnormal data and the corresponding time point of each liquid nitrogen tank by colors; prompting whether the weight of the liquid nitrogen tank is in an early warning or abnormal state; and providing historical record browsing for a user, wherein the historical record comprises weight monitoring records of the liquid nitrogen tanks, including monitoring time points, weights corresponding to the time points and whether data are abnormal, and can be sorted according to the weights and the time.
Furthermore, the intelligent early warning module is used for sending early warning information to a user when the weight of the liquid nitrogen tank does not conform to a normal range, the early warning information comprises the label of the early-warning liquid nitrogen tank, the early warning time, the current early warning time interval and the normal data range value of the liquid nitrogen tank, and the early warning mode can be voice reminding, ring reminding, information early warning or pushing to a user terminal for displaying; and early warning information can be sent to the user according to an early warning mode and an early warning interval set by the user.
Further, the sampling interval is half an hour, and the user can set the parameters required by the system in the personalization module of the warning device or select the default parameter values for the system to use by the user.
Furthermore, the display mode of the early warning information comprises screen reminding, voice and ring.
According to a second aspect of the present invention, there is provided a method for using the automatic weight monitoring and intelligent warning of the liquid nitrogen container, the method is applied to the automatic weight monitoring and intelligent warning system of the liquid nitrogen container, and the method includes:
a user configures liquid nitrogen tanks, wherein the number of the liquid nitrogen tanks is N;
a user sets a sampling interval, and a system is started to read initial configuration and parameters of each liquid nitrogen tank;
and the system based on the automatic weight monitoring and intelligent early warning of the liquid nitrogen tank carries out automatic monitoring and intelligent early warning on the weight of the liquid nitrogen tank.
According to a third aspect of the present invention, there is provided a system for automatic weight monitoring and intelligent early warning of a liquid nitrogen tank, comprising:
a processor for executing a plurality of instructions;
a memory to store a plurality of instructions;
the instructions are stored in the memory, and are loaded by the processor and used for executing the method for using the automatic weight monitoring and intelligent early warning of the liquid nitrogen tank.
According to a fourth aspect of the present invention, there is provided a computer readable storage medium having a plurality of instructions stored therein; the instructions are used for loading and executing the using method of the automatic weight monitoring and intelligent early warning of the liquid nitrogen tank by the processor.
According to the scheme of the invention, the daily consumption of the liquid nitrogen is calculated by weighing in a fixed time in an experimental environment, and then the time points of adding and purchasing the liquid nitrogen are calculated, so that the purposes of automatic monitoring and intelligent early warning can be achieved. The uncertainty and instability of manual monitoring are avoided, users can observe weight information of all liquid nitrogen tanks in real time, intelligent analysis is carried out based on data information, early warning information is timely sent out to abnormal data to remind the users, and the time for adding liquid nitrogen next time is predicted. Therefore, the user can monitor the change of the liquid nitrogen at any time and any place within 24 hours and obtain early warning information in time, so that the management of the liquid nitrogen is safer, more intelligent and more efficient.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention. In the drawings:
fig. 1 is a system structure diagram of automatic weight monitoring and intelligent early warning of a liquid nitrogen tank according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
First, a system structure diagram of automatic weight monitoring and intelligent early warning of a liquid nitrogen tank according to an embodiment of the present invention will be described with reference to fig. 1.
The system comprises N base sensors, a controller and an early warning device, wherein each base sensor corresponds to one liquid nitrogen tank;
the base sensor is a sensor arranged at the bottom of the liquid nitrogen tank, samples the weight of the liquid nitrogen tank according to a sampling interval set by a user, marks the event type as conventional sampling, and transmits sampling time, the event type corresponding to the sampling time and the weight data of the liquid nitrogen tank to the controller; the base sensor also senses events of increasing the sample tubes and reducing the sample tubes of the corresponding liquid nitrogen tank, marks the event types of increasing the sample tubes as increasing the sample tubes, marks the event types of reducing the sample tubes as reducing the sample tubes, takes the time points of the events of increasing the sample tubes and reducing the sample tubes of the liquid nitrogen tank as sampling time, and transmits the time points, the event types corresponding to the time points and the weight data of the liquid nitrogen tank after the events to the controller; the weight data of the liquid nitrogen tank comprise the weight of an empty liquid nitrogen tank, the time corresponding to the sampling time point corresponding to the weight data of the liquid nitrogen tank and the weight data of the liquid nitrogen contained in the liquid nitrogen tank;
the base sensor comprises a weight measuring module and a data transmission module, and the weight measuring module is used for measuring the weight of the liquid nitrogen tank corresponding to the base sensor; the data transmission module is used for transmitting the time point, the event type corresponding to the measuring time point and the weight data to the controller;
the controller receives an analog signal output by the base sensor, and transmits sampling time obtained from the sensor and event type and weight data corresponding to the sampling time to the early warning device after internal processing; the early warning device comprises a data receiving module, an automatic monitoring module, a data storage module, a data analysis module, an intelligent early warning module and a personalized module;
the data receiving module is used for receiving the sampling time sent by the controller and the event type and weight data corresponding to the sampling time through a wired or wireless circuit;
the automatic monitoring module is used for recording account information, label information of each liquid nitrogen tank in N liquid nitrogen tanks managed by the system and information of each liquid nitrogen tank, wherein the information of the liquid nitrogen tanks comprises a weight normal range value of the liquid nitrogen tank, intelligent early warning weight information, intelligent early warning switch information, automatic monitoring switch information and data storage time information;
the data storage module is used for storing the data received by the data receiving module, and the data storage module is used for storing historical data which are sent by the controller and acquired by base sensors of all the liquid nitrogen tanks, wherein the historical data comprise sampling time and event types and weight data corresponding to the sampling time;
the data analysis module is used for analyzing and processing the data in the data storage module;
the intelligent early warning module is used for sending early warning information to a user when the weight of the liquid nitrogen tank is not in a normal range value; the early warning information comprises an early warning liquid nitrogen tank label, early warning time, a liquid nitrogen adding time limit and a normal range value of the liquid nitrogen tank;
the display mode of the early warning information comprises screen reminding, voice and ring;
the personalized module is used for receiving control precision parameter values of the liquid nitrogen tanks set by a user, presenting real-time change conditions of the liquid nitrogen to the user according to analysis results of the data analysis module and receiving the setting of the system by the user;
the user setting the system further comprises improving and adjusting the system when using the system.
In particular, the amount of the solvent to be used,
the data analysis module is used for analyzing and processing the data in the data storage module, and comprises: acquiring a control precision parameter value k of the liquid nitrogen tank, which is received by the personalized module and set by a user; the control precision parameter value is used for indicating and acquiring the number of historical data of the liquid nitrogen tank stored in the storage module; correcting the acquired k pieces of historical data; predicting the early warning time of the liquid nitrogen tank;
the correcting the acquired k pieces of history data includes: sorting the k historical data in the order of sampling time points from front to back, xiPoints in time of sampling, M, representing historical dataiIs related to the sampling time point xiCorresponding weight data of the liquid nitrogen container, i.e. weight data including the liquid nitrogen container and the liquid nitrogen, yiRepresenting historical data and sampling time point xiAt the corresponding moment, the weight data of the liquid nitrogen contained in the liquid nitrogen tank; m0The weight of the empty liquid nitrogen tank; y isi＝Mi-M0，1≤i≤k，y′iDenotes yiCorrecting the processed liquid nitrogen weight data;
in this embodiment, it should be noted that when the liquid nitrogen tank is used, the sample tube is not immediately added initially, and the add key can be clicked after the liquid nitrogen tank is filled with the sample tube and the weight of the sample tube is weighed, so that the sample tube is added.
If the event types of the k historical data are all conventional sampling, y is the time when no sample tube is added or reducediData is the same as the historical data set before correction, y'iAssigned a value of yi；
If the historical data of the event type marked as the added sample tube exists in the k pieces of historical data, the time point for adding the sample tube is xjWith the time point xjCorresponding liquid nitrogen weight data as yj(ii) a Correction history data yj+1,……,ykAll of y inpWherein j +1 is not less than p and not more than k, and y'pAssigned a value of yp-(yj-yj-1)；2≤j≤k；
If the historical data of the event type marked as the reduction sample tube exists, the time point of reducing the sample tube is xoWith the time point xoCorresponding liquid nitrogen weight data as yo(ii) a Correction history data yo+1,……,ykAll of y inqQ is more than or equal to o +1 and less than or equal to k, and y'qAssigned a value of yq；
The values of j and q are related to the use regulations when the liquid nitrogen tank is used, for example, the liquid nitrogen tank is used without directly adding a sample tube to the liquid nitrogen tank, and after the liquid nitrogen tank is weighed by the weight of the full liquid nitrogen tank, an adding key can be clicked to add the sample tube.
Acquiring corrected historical data x of the liquid nitrogen tanki、y′iWherein i is more than or equal to 1 and less than or equal to k; fitting the weight data of the liquid nitrogen tank with the time point corresponding to the sampling time, and obtaining a relational equation between the time point corresponding to the sampling time and the corrected liquid nitrogen weight data after fitting:
wherein xiRepresents the sampling time point, y'iRepresentative and sampling time point xiThe corresponding corrected liquid nitrogen weight is fitted to determine the numerical values of the coefficients a and b,
wherein the content of the first and second substances,
determining the quantity of the acquired historical data through a control precision parameter value k of the liquid nitrogen tank, and fitting parameters a and b; the more the amount of historical data, the more accurate the parameters a and b are fit. As the basis for the next calculation of distance safety line, guard line days.
The user sets a safety line and a warning line according to experience, use requirements and the characteristics of the stored articles in the liquid nitrogen tank, and the safety line and the warning line can be set by the userSetting through a personalized module, wherein the safety line and the warning line are score values; the user sets the safety line to l through the personalized modulesSetting a warning line as la(ii) a When the liquid nitrogen tank is filled with liquid nitrogen, the weight of the contained liquid nitrogen is N, and the weight of the residual liquid nitrogen in the liquid nitrogen tank is [ l ]sN,N]The residual liquid nitrogen amount of the liquid nitrogen tank is safe; the weight of the residual liquid nitrogen in the liquid nitrogen tank is [ l ]aN,lsN]The residual liquid nitrogen amount of the liquid nitrogen tank has potential risk, but the alarm is not given; the weight of the residual liquid nitrogen in the liquid nitrogen tank is [0, laN]In time, the residual liquid nitrogen amount of the liquid nitrogen tank is seriously insufficient, and an alarm is required;
in this embodiment, the weight data of the liquid nitrogen tank corresponding to the sampling time of the liquid nitrogen tank, which is acquired by the data analysis module, is used for calculating the time t required for the weight of the liquid nitrogen in the liquid nitrogen tank to reach the safety line from the current sampling timesThe warning time is used as the safety line warning time of the liquid nitrogen tank; calculating the time t required for the weight of the liquid nitrogen in the liquid nitrogen tank to reach the warning line from the current sampling timeaAnd as warning line early warning time of the liquid nitrogen tank:
in this embodiment, the sampling interval is half an hour, and the user can set the parameters required by the system in the personalization module of the warning device, or the user can select to use the default parameter values of the system.
Further, the data analysis module stores the analyzed result in the data storage module, and simultaneously sends the analyzed result to the individuation module, and sends the calculated early warning time of reaching the safety line, the calculated early warning time of reaching the warning line and the calculated early warning time of reaching the warning line to the individuation module.
Furthermore, the personalized module can receive the setting of a user on the system, and comprises a monitoring period, an early warning interval, a weight range of each liquid nitrogen tank, an early warning switch, a monitoring switch, data storage time and a voice reminding function; the real-time change condition of the liquid nitrogen can be presented to a user according to the data information in the data storage module and the analysis and processing result obtained by the data analysis module; the monitoring time point and the corresponding weight data of each liquid nitrogen tank can be provided for a user; a weight data change curve chart of each liquid nitrogen tank; according to the calculated early warning time of reaching the safety line and the calculated early warning time of reaching the warning line, determining the predicted time of adding liquid nitrogen next time for each liquid nitrogen tank, and performing early warning before the predicted time, wherein the early warning is broadcasted every day; marking the abnormal data and the corresponding time point of each liquid nitrogen tank by colors; prompting whether the weight of the liquid nitrogen tank is in an early warning or abnormal state; and providing historical record browsing for a user, wherein the historical record comprises weight monitoring records of the liquid nitrogen tanks, including monitoring time points, weights corresponding to the time points and whether data are abnormal, and can be sorted according to the weights and the time.
Furthermore, the intelligent early warning module is used for sending early warning information to a user when the weight of the liquid nitrogen tank does not conform to a normal range, the early warning information comprises the label of the early-warning liquid nitrogen tank, the early warning time, the current early warning time interval and the normal data range value of the liquid nitrogen tank, and the early warning mode can be voice reminding, ring reminding, information early warning or pushing to a user terminal for displaying; and early warning information can be sent to the user according to an early warning mode and an early warning interval set by the user.
And further, after the fact that early warning is needed is determined, early warning data are stored in the data storage module.
Further, setting the state of the liquid nitrogen tank to indicate that the empty tank weight of the liquid nitrogen tank is M0The weight of the liquid nitrogen filled in the liquid nitrogen tank is M, and the safety line of the liquid nitrogen tank is defined as
When the sensor detects a weight of
When the alarm is started, the voice early warning is directly started, and the prompt information is 'please notice, the weight is reduced'; define the warning line of the liquid nitrogen tank as
Upon detection of a weight at the sensor
When the alarm is finished, the voice alarm is directly started, and the alarm information is 'please notice, the weight is insufficient'.
Regularly and foretell the time of reaching liquid nitrogen 1/2 safety line every day, suggest that the liquid nitrogen content needs to be supplemented in time; the time to reach the alarm line of liquid nitrogen 1/3 is regularly predicted every day, and the liquid nitrogen content needs to be supplemented immediately.
The embodiment of the invention further provides a use method of the automatic weight monitoring and intelligent early warning system for the liquid nitrogen tank, which is applied to the automatic weight monitoring and intelligent early warning system for the liquid nitrogen tank and comprises the following steps:
a user configures liquid nitrogen tanks, wherein the number of the liquid nitrogen tanks is N;
a user sets a sampling interval, and a system is started to read initial configuration and parameters of each liquid nitrogen tank;
and the system based on the automatic weight monitoring and intelligent early warning of the liquid nitrogen tank carries out automatic monitoring and intelligent early warning on the weight of the liquid nitrogen tank.
The present embodiment provides an example of collecting data and correcting the data, as follows:
when the event types are all conventional sampling, the obtained corresponding relationship between the time point and the corrected weight is shown in the following table 1.
Table 1 weight data obtained for time points and time points
The corresponding relationship between the time point and the corrected weight when the event type is the addition of the test tube is shown in the following table 2.
Can be used inAn adding new sample key is arranged on a display screen of the user interaction, and when the base sensor monitors that the weight changes, the weight y of the added test tube is calculated0(y0＝ym+1-ym) And increasing the weight value of all sampling points before the time point by y0。
TABLE 2 weight data corresponding to time points and time points obtained when adding test tubes
The time point and corrected weight correspondence obtained when the event type is a decrease in test tubes is shown in table 3 below.
A button for taking out the sample can be arranged on a display screen interacting with a user, and when the base sensor monitors that the weight changes, the weight value of all sampling points before the sample tube is added to the sampling point is reduced by y0(after the addition of points in Table 2 and before the subtraction of points in Table 3), the weighing values are restored at and after the subtraction of points, and y is not subtracted again0。
TABLE 3 weight data corresponding to time points and time points obtained when reducing test tubes
The embodiment of the invention further provides a system for automatic weight monitoring and intelligent early warning of a liquid nitrogen tank, which comprises:
a processor for executing a plurality of instructions;
a memory to store a plurality of instructions;
the instructions are stored in the memory, and are loaded by the processor and used for executing the method for automatically monitoring the weight of the liquid nitrogen tank and intelligently early warning.
The embodiment of the invention further provides a computer readable storage medium, wherein a plurality of instructions are stored in the storage medium; the instructions are used for loading and executing the method for automatically monitoring the weight of the liquid nitrogen tank and intelligently early warning by the processor.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the embodiments provided in the present invention, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions in actual implementation, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, a physical machine Server, or a network cloud Server, etc., and needs to install a Windows or Windows Server operating system) to perform some steps of the method according to various embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent change and modification made to the above embodiment according to the technical spirit of the present invention are still within the scope of the technical solution of the present invention.
Claims (10)
1. A system for automatic weight monitoring and intelligent early warning of a liquid nitrogen tank is characterized by comprising N base sensors, a controller and an early warning device, wherein each base sensor corresponds to one liquid nitrogen tank;
the base sensor is a sensor arranged at the bottom of the liquid nitrogen tank, samples the weight of the liquid nitrogen tank according to a sampling interval set by a user, marks the event type as conventional sampling, and transmits sampling time, the event type corresponding to the sampling time and the weight data of the liquid nitrogen tank to the controller; the base sensor also senses events of increasing the sample tubes and reducing the sample tubes of the corresponding liquid nitrogen tank, marks the event types of increasing the sample tubes as increasing the sample tubes, marks the event types of reducing the sample tubes as reducing the sample tubes, takes the time points of the events of increasing the sample tubes and reducing the sample tubes of the liquid nitrogen tank as sampling time, and transmits the time points, the event types corresponding to the time points and the weight data of the liquid nitrogen tank after the events to the controller; the weight data of the liquid nitrogen tank comprise the weight of an empty liquid nitrogen tank, the time corresponding to the sampling time point corresponding to the weight data of the liquid nitrogen tank and the weight data of the liquid nitrogen contained in the liquid nitrogen tank;
the base sensor comprises a weight measuring module and a data transmission module, and the weight measuring module is used for measuring the weight of the liquid nitrogen tank corresponding to the base sensor; the data transmission module is used for transmitting the time point, the event type corresponding to the time point and the weight data to the controller;
the controller receives an analog signal output by the base sensor, and transmits sampling time obtained from the sensor and event type and weight data corresponding to the sampling time to the early warning device after internal processing; the early warning device comprises a data receiving module, an automatic monitoring module, a data storage module, a data analysis module, an intelligent early warning module and a personalized module;
the data receiving module is used for receiving the sampling time sent by the controller and the event type and weight data corresponding to the sampling time through a wired or wireless circuit;
the automatic monitoring module is used for recording account information, label information of each liquid nitrogen tank in N liquid nitrogen tanks managed by the system and information of each liquid nitrogen tank, wherein the information of the liquid nitrogen tanks comprises a weight normal range value of the liquid nitrogen tank, intelligent early warning weight information, intelligent early warning switch information, automatic monitoring switch information and data storage time information;
the data storage module is used for storing the data received by the data receiving module, and the data storage module is used for storing historical data which are sent by the controller and acquired by base sensors of all the liquid nitrogen tanks, wherein the historical data comprise sampling time and event types and weight data corresponding to the sampling time;
the data analysis module is used for analyzing and processing the data in the data storage module;
the intelligent early warning module is used for sending early warning information to a user when the weight of the liquid nitrogen tank is not in a normal range value; the early warning information comprises an early warning liquid nitrogen tank label, early warning time, a liquid nitrogen adding time limit and a normal range value of the liquid nitrogen tank;
the display mode of the early warning information comprises screen reminding, voice and ring;
the personalized module is used for receiving control precision parameter values of the liquid nitrogen tanks set by a user, presenting real-time change conditions of the liquid nitrogen to the user according to analysis results of the data analysis module and receiving the setting of the system by the user;
the user setting the system further comprises improving and adjusting the system when using the system.
2. The system for automatically monitoring and intelligently early warning the weight of the liquid nitrogen tank as claimed in claim 1, wherein the data analysis module is used for analyzing and processing the data in the data storage module, and comprises: acquiring a control precision parameter value k of the liquid nitrogen tank, which is received by the personalized module and set by a user; the control precision parameter value is used for indicating and acquiring the number of historical data of the liquid nitrogen tank stored in the storage module; correcting the acquired k pieces of historical data; predicting the early warning time of the liquid nitrogen tank;
the correcting the acquired k pieces of history data includes: sorting the k historical data in the order of sampling time points from front to back, xiPoints in time of sampling, M, representing historical dataiIs related to the sampling time point xiCorresponding weight data of the liquid nitrogen container, i.e. weight data including the liquid nitrogen container and the liquid nitrogen, yiRepresenting historical data and sampling time point xiAt the corresponding moment, the weight data of the liquid nitrogen contained in the liquid nitrogen tank; m0The weight of the empty liquid nitrogen tank; y isi＝Mi-M0，1≤i≤k，y′iDenotes yiCorrecting the processed liquid nitrogen weight data;
if the event types of the k historical data are all conventional sampling, y is the time when no sample tube is added or reducediData is the same as the historical data set before correction, y'iAssigned a value of yi；
If the historical data of the event type marked as the added sample tube exists in the k pieces of historical data, the time point for adding the sample tube is xjWith the time point xjCorresponding liquid nitrogen weight data as yj(ii) a Correction history data yj+1，……，ykAll of y inpWherein j +1 is not less than p and not more than k, and y'pAssigned a value of yp-(yj-yj-1)；2≤j≤k；
If the event type mark is the historical data of the reduction sample tube, the reduction sampleTime point of tube is xo(ii) a And the time point xoCorresponding liquid nitrogen weight data as yo(ii) a Correction history data yo+1，……，ykAll of y inqQ is more than or equal to o +1 and less than or equal to k, and y'qAssigned a value of yq；
Acquiring corrected historical data x of the liquid nitrogen tanki、y′iWherein i is more than or equal to 1 and less than or equal to k; fitting the weight data of the liquid nitrogen tank with the time point corresponding to the sampling time, and obtaining a relational equation between the time point corresponding to the sampling time and the corrected liquid nitrogen weight data after fitting:
wherein xiRepresents the sampling time point, y'iRepresentative and sampling time point xiThe corresponding corrected liquid nitrogen weight is fitted to determine the numerical values of the coefficients a and b,
wherein the content of the first and second substances,
the method comprises the following steps that a user sets a safety line and a warning line according to experience, use requirements and the characteristics of articles stored in a liquid nitrogen tank, wherein the safety line and the warning line can be set by the user through a personalized module, and the safety line and the warning line are fractional values; the user sets the safety line to l through the personalized modulesSetting a warning line as la(ii) a When the liquid nitrogen tank is filled with liquid nitrogen, the weight of the contained liquid nitrogen is N, and the weight of the residual liquid nitrogen in the liquid nitrogen tank is [ l ]sN，N]The residual liquid nitrogen amount of the liquid nitrogen tank is safe; the weight of the residual liquid nitrogen in the liquid nitrogen tank is [ l ]aN，lsN]The residual liquid nitrogen amount of the liquid nitrogen tank has potential risk, but the alarm is not given; the weight of the residual liquid nitrogen in the liquid nitrogen tank is [0, laN]In time, the residual liquid nitrogen amount of the liquid nitrogen tank is seriously insufficient, and an alarm is required;
calculating the time t required for the weight of the liquid nitrogen in the liquid nitrogen tank to reach the safety line according to the weight data of the liquid nitrogen tank corresponding to the latest sampling time of the liquid nitrogen tank acquired by the data analysis modulesThe warning time is used as the safety line warning time of the liquid nitrogen tank; calculating the time t required for the weight of the liquid nitrogen in the liquid nitrogen tank to reach the warning lineaAnd as warning line early warning time of the liquid nitrogen tank:
3. the system for automatically monitoring the weight of the liquid nitrogen tank and intelligently early warning as claimed in claim 1, wherein the data analysis module stores the analyzed result in the data storage module, and simultaneously sends the analyzed result to the personalized module, and sends the calculated early warning time of reaching the safety line, the calculated early warning time of reaching the warning line and the calculated early warning time of reaching the warning line to the personalized module.
4. The system for automatic weight monitoring and intelligent early warning of the liquid nitrogen tank as claimed in claim 1, wherein the personalized module can receive the settings of the system by a user, and comprises the functions of setting a monitoring period, setting the weight range of each liquid nitrogen tank at an early warning interval, setting the early warning range of each liquid nitrogen tank, setting an early warning switch, monitoring the switch, storing data for a certain time, and reminding by voice; the real-time change condition of the liquid nitrogen can be presented to a user according to the data information in the data storage module and the analysis and processing result obtained by the data analysis module; the monitoring time point and the corresponding weight data of each liquid nitrogen tank can be provided for a user; a weight data change curve chart of each liquid nitrogen tank; according to the calculated early warning time of reaching the safety line and the calculated early warning time of reaching the warning line, determining the predicted time of adding liquid nitrogen next time for each liquid nitrogen tank, and performing early warning before the predicted time, wherein the early warning is broadcasted every day; marking the abnormal data and the corresponding time point of each liquid nitrogen tank by colors; prompting whether the weight of the liquid nitrogen tank is in an early warning or abnormal state; and providing historical record browsing for a user, wherein the historical record comprises weight monitoring records of the liquid nitrogen tanks, including monitoring time points, weights corresponding to the time points and whether data are abnormal, and can be sorted according to the weights and the time.
5. The system for automatically monitoring the weight of the liquid nitrogen tank and intelligently early warning as claimed in claim 1, wherein the intelligent early warning module is used for sending early warning information to a user when the weight of the liquid nitrogen tank does not conform to a normal range, the early warning information comprises a label of the early-warning liquid nitrogen tank, early warning time, a current early warning time interval and a normal data range value of the liquid nitrogen tank, and the early warning mode can be voice reminding, ring reminding, information early warning or pushing to a user terminal for displaying; and early warning information can be sent to the user according to an early warning mode and an early warning interval set by the user.
6. The system for automatic weight monitoring and intelligent warning of liquid nitrogen container as claimed in claim 1, wherein the sampling interval is half an hour, and the user can set the parameters required by the system in the personalized module of the warning device or select the default parameter values of the system for use by the user.
7. The system for automatically monitoring the weight of the liquid nitrogen tank and intelligently early warning as claimed in claim 1, wherein the display mode of the early warning information comprises screen reminding, voice and ring.
8. A method for using the automatic weight monitoring and intelligent early warning system for the liquid nitrogen tank, which is applied to the automatic weight monitoring and intelligent early warning system for the liquid nitrogen tank as claimed in any one of claims 1 to 7, comprises the following steps:
a user configures liquid nitrogen tanks, wherein the number of the liquid nitrogen tanks is N;
a user sets a sampling interval, and a system is started to read initial configuration and parameters of each liquid nitrogen tank;
and the system based on the automatic weight monitoring and intelligent early warning of the liquid nitrogen tank carries out automatic monitoring and intelligent early warning on the weight of the liquid nitrogen tank.
9. The utility model provides a system of liquid nitrogen container weight automatic monitoring and intelligent early warning which characterized in that includes:
a processor for executing a plurality of instructions;
a memory to store a plurality of instructions;
the use method of the system for automatic weight monitoring and intelligent early warning of liquid nitrogen tank as claimed in claim 8 is carried out by loading and executing the instructions stored in the memory and the processor.
10. A computer-readable storage medium having stored therein a plurality of instructions; the instructions for use of the system for automatic monitoring and intelligent warning of the weight of liquid nitrogen tanks of claim 8 are loaded and executed by a processor.
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