Portable density measuring instrument and method of using the same

Abstract

The present invention provides a portable density measuring instrument and its use method, comprising: a power supply, a liquid pump, a resonant tube sensor, a display adjustment module, a temperature sensor, a monitoring circuit board, and a control panel. The power supply supplies power to the monitoring circuit board, and a manual liquid pump is used to extract battery electrolyte to the resonant tube sensor. Different currents are generated by the different vibration frequencies generated by electrolytes of different densities in the resonant tube, and transmitted to the monitoring circuit board. The monitoring circuit board converts the current signal into a voltage signal and supplies it to the display adjustment module for display. The temperature sensor measures the temperature of the extracted electrolyte and the ambient temperature. The present invention uses a liquid pump to directly extract electrolyte from the battery for measurement, greatly reducing the difficulty of liquid extraction and manual workload, thereby improving work efficiency. While adopting resonant tube density measurement technology, the measured value is also corrected through temperature compensation, greatly improving the accuracy of electrolyte measurement.

Description

Technical Field

[0001] The present invention relates to the technical field of ship equipment and instruments, and in particular to a portable density measuring instrument and a use method thereof. Background Art

[0002] Lead-acid battery packs are composed of several cells based on actual usage requirements. However, acid battery packs have strict requirements on the electrolyte density of each cell during operation. The closer the electrolyte density of each cell, the better, ideally, the same. This requires a high-precision density meter to ensure accurate density measurement, which helps protect the battery, improve battery efficiency, and extend its service life.

[0003] The original lead-acid battery packs were all measured manually. Manual measurement uses a glass tube density meter (minimum error is 0.005g / cm 3 ) , first, electrolyte must be removed from the battery and poured into a measuring cylinder. Then, the measured data must be visually checked before the electrolyte must be poured back into the battery. Because battery packs contain a large number of cells and are located in a confined, high-temperature, high-humidity cabin, manual density measurement is inefficient, labor-intensive, and difficult to accurately measure. Therefore, the present invention provides a portable density meter and its use method. Summary of the Invention

[0004] The present invention provides a portable density measuring instrument and a use method thereof, which are used to solve the above problems.

[0005] The present invention provides a portable density measuring instrument, comprising: a power supply, a liquid pump, a resonance tube sensor, a display adjustment module, a temperature sensor, a monitoring circuit board, and a control panel;

[0006] Among them, the power supply is used to supply power to the monitoring circuit board;

[0007] A liquid pump is used to extract the electrolyte from the battery and transport it to the resonant tube sensor;

[0008] A resonant tube sensor for detecting the vibration frequency of the electrolyte and generating a corresponding current signal according to the vibration frequency;

[0009] The temperature sensor is used to collect the current ambient temperature and electrolyte temperature of the temperature sensor and send them to the monitoring circuit board;

[0010] The monitoring circuit board is used to determine the density measurement value of the electrolyte based on the current signal, and obtain the actual density value of the electrolyte after temperature compensation in combination with the collected electrolyte temperature, and convert the voltage signal corresponding to the actual density value into a voltage signal and send it to the display adjustment module;

[0011] Display adjustment module, used to display the density value and temperature value of the electrolyte;

[0012] The control panel includes a variety of buttons for users to perform control operations.

[0013] Preferably, in a portable density measuring instrument, the resonant tube sensor is composed of two glass tubes with magnets, and two magnetic heads are installed above the magnets;

[0014] Among them, one magnetic head is energized to generate a magnetic field, causing the glass tube with the magnet to resonate, and the other magnetic head is affected by another vibrating magnet to generate current. The different density electrolytes produce different vibration frequencies in the resonance tube, and different currents are generated on the magnetic heads.

[0015] Preferably, in a portable density measuring instrument, monitoring a circuit board comprises:

[0016] A data receiving unit is used to receive and record the circuit signal and temperature signal sent by the resonant tube sensor and the temperature sensor, and obtain the density measurement value of the electrolyte in combination with the corresponding relationship between the current signal size and the density of the electrolyte;

[0017] a temperature compensation unit, configured to compare the density measurement value with an input density value of the electrolyte input into the battery at room temperature, obtain a difference between the density measurement value and the input density value, and multiply the difference by the electrolyte temperature density coefficient to obtain a temperature comparison compensation value;

[0018] The density measurement value is compensated based on the temperature comparison compensation value to obtain the actual density value of the electrolyte;

[0019] The current conversion unit is used to generate a corresponding voltage signal based on the actual density value, and send the voltage signal to the value display adjustment module for display.

[0020] Preferably, in a portable density measuring instrument, the temperature compensation unit comprises:

[0021] The temperature calibration subunit is used to calibrate the current electrolyte at high density and low density at room temperature, and to calibrate the current electrolyte at low and high temperature densities at the same high and low densities;

[0022] The calibration analysis subunit is used to compare and analyze the low-temperature and high-temperature density calibration results at high and low densities with the high-density and low-density calibration results at room temperature to obtain the electrolyte temperature density coefficient.

[0023] Preferably, in a portable density measuring instrument, the resonant tube sensor comprises:

[0024] The liquid extraction control monitoring unit is used to send a liquid extraction instruction to the liquid extraction pump when it detects that the liquid extraction button is pressed, and to detect in real time the liquid level of the electrolyte extracted by the liquid extraction pump into the glass tube of the resonant tube sensor. When the electrolyte reaches the top of the glass tube, the liquid extraction is terminated;

[0025] The measurement management unit is used to compare the volume of electrolyte extracted by the liquid pump with the maximum volume of the glass tube of the resonance tube sensor. When the two are consistent, the magnetic heads at both ends of the resonance tube sensor are controlled to vibrate to obtain a current signal;

[0026] Otherwise, a voice prompt to the user to refill the liquid is issued;

[0027] The drain control monitoring unit is used to return the electrolyte in the glass tube of the resonance tube sensor to the battery when it detects that the drain button is pressed.

[0028] Preferably, in a portable density measuring instrument, the display adjustment module includes:

[0029] A data display unit, used to display the actual density value of the electrolyte sent by the monitoring circuit board;

[0030] The data storage unit is used to automatically increase the random serial number by 1 after receiving the user's storage instruction, and store the display density value and its corresponding detection time according to the updated random serial number sequence in combination with the storage type selected by the user;

[0031] Wherein, the storage type includes short-term storage and long-term storage;

[0032] The data query unit is used to decrement or increment the random sequence number based on the user query direction.

[0033] Preferably, a portable density measuring instrument further includes: an interactive control module for a user to wirelessly interact with the portable density measuring instrument, including:

[0034] A backup storage unit is used to back up the long-term storage data of the portable density meter before the portable density meter is shut down and upload it to the cloud;

[0035] The wireless interaction unit is used to obtain the user's control instructions on the management APP and send the control instructions to the monitoring circuit board for analysis;

[0036] a detection prompt unit, configured to compare the electrolyte temperature collected by the temperature sensor with the current ambient temperature to obtain a measured temperature difference; and when the measured temperature difference is greater than or equal to a preset value, play a multiple measurement prompt voice message to the user, and mark the actual density values ​​corresponding to the multiple measurements to obtain a marked density value;

[0037] A data analysis unit is used to obtain the density difference between adjacent marked density values ​​corresponding to multiple measurements, and when the density difference is less than or equal to a preset threshold, a reminder is issued to the user to take the liquid again to obtain the latest actual density value;

[0038] Comparing the latest actual density value with the actual density value corresponding to the last measurement of the multiple measurements to obtain a measurement error, and when the measurement error is less than or equal to a preset error, determining that the latest actual density value is the final measured density value of the electrolyte;

[0039] Otherwise, the user is reminded to continue taking liquid for measurement.

[0040] Preferably, in a portable density measuring instrument, the interactive control module further comprises:

[0041] A measurement number recommendation unit is used to obtain the minimum measurement number corresponding to different measured temperature differences, classify the measured temperature differences based on the minimum measurement number, determine the temperature difference intervals corresponding to different minimum measurement numbers, and generate a measurement prompt table;

[0042] When the detection prompt unit detects that the measured temperature difference is less than the preset value, the default recommended number of measurements for the current electrolyte is 1;

[0043] When the detection prompt unit detects that the measured temperature difference is greater than or equal to a preset value, the detection prompt unit obtains a recommended number of measurements based on the measured temperature difference and the measurement prompt table, generates a measurement recommendation based on the recommended number of measurements, and obtains a measurement error between the actual density values ​​corresponding to the last measurement and the next measurement after the user confirms the measurement error;

[0044] The measurement error is sent to a data analysis unit for error judgment.

[0045] Preferably, in a portable density measuring instrument, the device further comprises: a data storage unit comprising:

[0046] The data sorting subunit is used to determine whether the maximum random serial number in the built-in storage space of the portable density measuring instrument is greater than or equal to the maximum preset serial number after receiving the storage instruction from the user;

[0047] If so, obtain the recommended number of measurements corresponding to the electrolyte density measurement, delete the stored data of the recommended number of measurements starting from the smallest random sequence number, and update the random sequence number sequence to obtain the latest random sequence number sequence;

[0048] The parsing storage subunit is used to parse the user's storage instruction, determine the user's storage type based on the parsing result, and generate a corresponding storage tag based on the storage type;

[0049] The latest random sequence number is automatically increased by 1, and the corresponding storage tag is added to the latest random sequence number, and the latest random sequence number is stored as the display density value and its corresponding detection time;

[0050] The temporary storage processing subunit is used to delete the data with temporary storage tags in the portable density measuring instrument and to synchronously revise the random serial number sequence.

[0051] The present invention provides a method for using a portable density measuring instrument, comprising:

[0052] Step 1: Insert the battery into the battery compartment of the portable density meter and press the "OK / Power" button to turn on the portable density meter;

[0053] Step 2: After confirming that the liquid extraction tube has been inserted into the electrolyte to be tested, press the liquid extraction button until the end of the stroke to control the liquid extraction pump to extract the electrolyte. After confirming that there are no bubbles in the glass tube of the resonant tube sensor, start the density test;

[0054] Step 3: After standing for 2-3 seconds, read the density of the electrolyte based on the display adjustment module, and press the drain button until the pump discharges the electrolyte at the end of the stroke;

[0055] Step 4: Select the storage of the displayed density value on the control panel;

[0056] Step 5: Repeat steps 2-3 until the electrolyte density test is completed, then proceed to step 6;

[0057] Step 6: Press and hold the "Exit / Power Off" button to turn off the portable density meter.

[0058] Compared with the prior art, the present invention has at least the following beneficial effects:

[0059] The present invention uses a power supply to power a monitoring circuit board and a manual pump to extract battery electrolyte to a resonant tube sensor. The resonant tube sensor consists of two glass tubes with magnets. Two magnetic heads are mounted above the magnets. One head generates a magnetic field when energized, causing the magnetized glass tube to resonate. The other head, influenced by the vibrating magnet, generates a current. Different densities of electrolyte generate different vibration frequencies within the resonant tube, generating different currents on the magnetic heads. This current is transmitted to the monitoring circuit board, which converts the current signal into a voltage signal that is fed to a display and adjustment module to display the density. A temperature sensor measures the temperature of the extracted electrolyte, which serves as a basis for temperature compensation, thereby improving electrolyte measurement accuracy. The present invention uses a pump to directly extract electrolyte from the battery for measurement, which is quick and convenient, significantly reducing the difficulty of liquid extraction and manual workload, improving work efficiency, and saving a significant amount of time for battery density measurement. Furthermore, the present invention utilizes resonant tube density measurement technology and also corrects the measured value through temperature compensation, significantly improving electrolyte measurement accuracy.

[0060] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present invention. The purpose and other advantages of the present invention can be achieved and obtained through the structures specifically pointed out in this application document.

[0061] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0063] Figure 1 This is a structural schematic diagram of a portable density measuring instrument of the present invention;

[0064] Figure 2 This is a structural schematic diagram of a portable density measuring instrument for monitoring a circuit board according to the present invention;

[0065] Figure 3 This is a structural schematic diagram of a resonant tube sensor for a portable density measuring instrument according to the present invention;

[0066] Figure 4 This is a structural diagram of a display adjustment module of a portable density measuring instrument of the present invention;

[0067] Figure 5 The present invention provides a flow chart of a method for using a portable density measuring instrument. DETAILED DESCRIPTION

[0068] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0069] Example 1:

[0070] The present invention provides a portable density measuring instrument, such as Figure 1 As shown, it includes: power supply, liquid pump, resonance tube sensor, display adjustment module, temperature sensor, monitoring circuit board and control panel;

[0071] Among them, the power supply is used to supply power to the monitoring circuit board;

[0072] A liquid pump is used to extract the electrolyte from the battery and transport it to the resonant tube sensor;

[0073] A resonant tube sensor for detecting the vibration frequency of the electrolyte and generating a corresponding current signal according to the vibration frequency;

[0074] The resonant tube sensor is composed of two glass tubes with magnets, and two magnetic heads are installed above the magnets;

[0075] One magnetic head is energized to generate a magnetic field, causing the glass tube with the magnet to resonate. The other magnetic head is affected by another vibrating magnet to generate current. The different density of electrolytes generates different vibration frequencies in the resonant tube, which in turn generates different currents on the magnetic heads.

[0076] The temperature sensor is used to collect the current ambient temperature and electrolyte temperature of the temperature sensor and send them to the monitoring circuit board;

[0077] The monitoring circuit board is used to determine the density measurement value of the electrolyte based on the current signal, and obtain the actual density value of the electrolyte after temperature compensation in combination with the collected electrolyte temperature, and convert the voltage signal corresponding to the actual density value into a voltage signal and send it to the display adjustment module;

[0078] Display adjustment module, used to display the density value and temperature value of the electrolyte;

[0079] The control panel includes a variety of buttons for users to perform control operations.

[0080] In this embodiment, the measurement accuracy error is within 0.001g / cm 3， And use digital display for direct reading.

[0081] In this embodiment, normal temperature refers to 25°C.

[0082] The above technical solution has the following beneficial effects: The present invention uses a power supply to power the monitoring circuit board and a manual pump to extract battery electrolyte to a resonant tube sensor. The resonant tube sensor consists of two glass tubes with magnets. Two magnetic heads are mounted above the magnets. One head generates a magnetic field when energized, causing the magnetized glass tube to resonate. The other head, influenced by the vibrating magnet, generates a current. Different densities of electrolyte generate different vibration frequencies within the resonant tube, generating different currents on the magnetic heads. This current is transmitted to the monitoring circuit board, which converts the current signal into a voltage signal that is fed to the display and adjustment module to display the density. A temperature sensor measures the temperature of the extracted electrolyte, which serves as a basis for temperature compensation, thereby improving electrolyte measurement accuracy. The present invention uses the pump to directly extract electrolyte from the battery for measurement, which is quick and convenient, significantly reducing the difficulty of liquid extraction and manual workload, improving work efficiency, and saving a significant amount of time for battery density measurement. Furthermore, the present invention utilizes resonant tube density measurement technology and also corrects the measured value through temperature compensation, significantly improving electrolyte measurement accuracy.

[0083] Example 2:

[0084] Based on Example 1, the circuit board is monitored, such as Figure 2 Shown, including:

[0085] A data receiving unit is used to receive and record the circuit signal and temperature signal sent by the resonant tube sensor and the temperature sensor, and obtain the density measurement value of the electrolyte in combination with the corresponding relationship between the current signal size and the density of the electrolyte;

[0086] a temperature compensation unit, configured to compare the density measurement value with an input density value of the electrolyte input into the battery at room temperature, obtain a difference between the density measurement value and the input density value, and multiply the difference by the electrolyte temperature density coefficient to obtain a temperature comparison compensation value;

[0087] The density measurement value is compensated based on the temperature comparison compensation value to obtain the actual density value of the electrolyte;

[0088] The current conversion unit is used to generate a corresponding voltage signal based on the actual density value, and send the voltage signal to the value display adjustment module for display.

[0089] In this embodiment, the density measurement value refers to the density value obtained by the resonant tube sensor through the vibration frequency.

[0090] In this embodiment, the input density value refers to the density value of the electrolyte detected at room temperature before being input into the battery.

[0091] In this embodiment, the actual density value is the sum of the temperature comparison compensation value and the density measurement value.

[0092] In this embodiment, the electrolyte temperature density coefficient refers to the change in density corresponding to a 1° C. change in electrolyte temperature.

[0093] The beneficial effects of the above technical solution: The present invention obtains the difference between the density measurement value and the input density value based on the density detection value at the temperature corresponding to the electrolyte and the input density value of the electrolyte input into the battery at room temperature, multiplies the difference with the electrolyte temperature density coefficient to obtain a temperature comparison compensation value, compensates the density measurement value by the temperature comparison compensation value, and obtains the actual density value of the electrolyte, thereby realizing temperature compensation in the electrolyte density detection process, controlling the measurement error within a certain range, and improving the accuracy of the electrolyte density detection.

[0094] Example 3:

[0095] Based on Example 2, the temperature compensation unit includes:

[0096] The temperature calibration subunit is used to calibrate the current electrolyte at high density and low density at room temperature, and to calibrate the current electrolyte at low and high temperature densities at the same high and low densities;

[0097] The calibration analysis subunit is used to compare and analyze the low-temperature and high-temperature density calibration results at high and low densities with the high-density and low-density calibration results at room temperature to obtain the electrolyte temperature density coefficient.

[0098] In this embodiment, high density refers to the highest density of the electrolyte, low density refers to the lowest density of the electrolyte, low temperature refers to 5°C, and high temperature refers to 50°C.

[0099] The beneficial effects of the above technical solution are as follows: the present invention first performs high-density and low-density calibration at room temperature (25°C), then uses electrolyte solutions of the same density to perform density calibration at low temperatures of 5°C and high temperatures of 50°C, respectively. The low- and high-temperature density calibration results at high and low densities are compared and analyzed with the high- and low-density calibration results at room temperature to obtain the electrolyte temperature density coefficient. This demonstrates the determination of electrolyte temperature density coefficients for different electrolytes and effectively expands the scope of use of portable density meters.

[0100] Example 4:

[0101] Based on Example 1, the resonant tube sensor, such as Figure 3 Shown, including:

[0102] The liquid extraction control monitoring unit is used to send a liquid extraction instruction to the liquid extraction pump when it detects that the liquid extraction button is pressed, and to detect in real time the liquid level of the electrolyte extracted by the liquid extraction pump into the glass tube of the resonant tube sensor. When the electrolyte reaches the top of the glass tube, the liquid extraction is terminated;

[0103] The measurement management unit is used to compare the volume of electrolyte extracted by the liquid pump with the maximum volume of the glass tube of the resonance tube sensor. When the two are consistent, the magnetic heads at both ends of the resonance tube sensor are controlled to vibrate to obtain a current signal;

[0104] Otherwise, a voice prompt to the user to refill the liquid is issued;

[0105] The drain control monitoring unit is used to return the electrolyte in the glass tube of the resonance tube sensor to the battery when it detects that the drain button is pressed.

[0106] In this embodiment, when the resonant tube sensor is drawing or discharging liquid, the corresponding button is pressed to the end of the stroke to ensure that the extracted liquid fills the glass tube to the maximum extent and that the liquid in the glass tube is discharged, thereby minimizing the impact of density detection on the amount of electrolytic charge in the battery.

[0107] The beneficial effects of the above technical solution are as follows: the present invention sends a liquid extraction instruction to the liquid extraction pump when the liquid extraction control monitoring unit detects that the liquid extraction button is pressed, and detects in real time the liquid level of the electrolyte extracted by the liquid extraction pump into the glass tube of the resonance tube sensor. When the electrolyte reaches the top of the glass tube, the liquid extraction is ended. Then, the liquid discharge control monitoring unit returns the electrolyte in the glass tube of the resonance tube sensor to the battery when the liquid discharge button is detected to be pressed. The electrolyte is directly extracted from the battery by the liquid extraction pump for measurement, which is quick and convenient, greatly reduces the difficulty of liquid extraction and reduces the manual workload. The volume of electrolyte extracted by the liquid extraction pump is compared with the maximum volume of the glass tube of the resonance tube sensor by the measurement management unit, and a brief judgment is made on whether there are bubbles in the glass tube. When the two are consistent, the magnetic heads at both ends of the resonance tube sensor are controlled to vibrate to obtain a current signal; otherwise, a voice prompt for re-extraction is issued to the user, which greatly improves the accuracy of electrolyte measurement.

[0108] Example 5:

[0109] On the basis of embodiment 1, the display adjustment module is as follows: Figure 4 Shown, including:

[0110] A data display unit, used to display the actual density value of the electrolyte sent by the monitoring circuit board;

[0111] The data storage unit is used to automatically increase the random serial number by 1 after receiving the user's storage instruction, and store the display density value and its corresponding detection time according to the updated random serial number sequence in combination with the storage type selected by the user;

[0112] Wherein, the storage type includes short-term storage and long-term storage;

[0113] The data query unit is used to decrement or increment the random sequence number based on the user query direction.

[0114] In this embodiment, the built-in memory of the portable density measuring instrument can store 1000 data, with random serial numbers from 000 to 999.

[0115] The beneficial effects of the above technical solution: The present invention displays the actual density value of the electrolyte sent by the monitoring circuit board through the data display unit, directly displays the number, ensures that the user can quickly read the density value, improves the density reading efficiency, and stores different types of data through the data storage unit, which is convenient for the user's data archiving and subsequent search, and then decreases or increases the random sequence number based on the user's query direction through the data query unit, realizing free switching between stored data.

[0116] Example 6:

[0117] Based on Example 1, a portable density measuring instrument further includes: an interactive control module for a user to wirelessly interact with the portable density measuring instrument, including:

[0118] A backup storage unit is used to back up the long-term storage data of the portable density meter before the portable density meter is shut down and upload it to the cloud;

[0119] The wireless interaction unit is used to obtain the user's control instructions on the management APP and send the control instructions to the monitoring circuit board for analysis;

[0120] a detection prompt unit, configured to compare the electrolyte temperature collected by the temperature sensor with the current ambient temperature to obtain a measured temperature difference; and when the measured temperature difference is greater than or equal to a preset value, play a multiple measurement prompt voice message to the user, and mark the actual density values ​​corresponding to the multiple measurements to obtain a marked density value;

[0121] A data analysis unit is used to obtain the density difference between adjacent marked density values ​​corresponding to multiple measurements, and when the density difference is less than or equal to a preset threshold, a reminder is issued to the user to take the liquid again to obtain the latest actual density value;

[0122] Comparing the latest actual density value with the actual density value corresponding to the last measurement of the multiple measurements to obtain a measurement error, and when the measurement error is less than or equal to a preset error, determining that the latest actual density value is the final measured density value of the electrolyte;

[0123] Otherwise, the user is reminded to continue taking liquid for measurement;

[0124] A measurement number recommendation unit is used to obtain the minimum measurement number corresponding to different measured temperature differences, classify the measured temperature differences based on the minimum measurement number, determine the temperature difference intervals corresponding to different minimum measurement numbers, and generate a measurement prompt table;

[0125] When the detection prompt unit detects that the measured temperature difference is less than the preset value, the default recommended number of measurements for the current electrolyte is 1;

[0126] When the detection prompt unit detects that the measured temperature difference is greater than or equal to a preset value, the detection prompt unit obtains a recommended number of measurements based on the measured temperature difference and the measurement prompt table, generates a measurement recommendation based on the recommended number of measurements, and obtains a measurement error between the actual density values ​​corresponding to the last measurement and the next measurement after the user confirms the measurement error;

[0127] The measurement error is sent to a data analysis unit for error judgment.

[0128] In this embodiment, the management APP refers to an APP that establishes Bluetooth or WIFI communication with the portable density measuring instrument. The APP is associated with the cloud of the portable density measuring instrument, and the portable density measuring instrument can be controlled through the APP.

[0129] In this embodiment, the preset threshold value range is [0, 2], and the preset error value range is [0, 0.2].

[0130] In this embodiment, the minimum number of measurements refers to the minimum recommended number of multiple measurements.

[0131] The above technical solution has the following effects: the present invention uses a backup storage unit to back up the long-term storage data of the portable density measuring instrument before the portable density measuring instrument is shut down, and uploads it to the cloud. The data that the user needs to store for a long time is automatically backed up, avoiding the problem that the built-in storage of the portable density measuring instrument cannot continue to store new data after the upper limit is reached. It ensures that even after the original storage data is deleted, the user can still find the original storage data through the cloud, without increasing the memory of the portable density measuring instrument. At the same time, it meets the user's need for large-scale data storage. The wireless interaction unit obtains the user's control instructions on the management APP and sends the control instructions to the monitoring circuit board for analysis, providing multiple possibilities for the portable density measuring instrument, providing convenience for the user. During the detection process, the detection prompt unit compares the electrolyte temperature collected by the temperature sensor with the current ambient temperature to obtain the measured temperature difference. When the measured temperature difference is greater than or equal to the preset value, a multiple measurement prompt voice is played to the user, and the actual density values ​​corresponding to the multiple measurements are marked to obtain the marked density value. The glass tube wall temperature is increased through multiple measurements, so that the measured temperature is close to the electrolyte temperature, thereby improving the accuracy of the final density value; and the data analysis unit obtains the multiple measurements of the electrolyte temperature. The density difference between the corresponding adjacent marked density values ​​is measured. When the density difference is less than or equal to a preset threshold, a reminder is issued to the user to take the liquid again to obtain the latest actual density value; the latest actual density value is compared with the actual density value corresponding to the last measurement of multiple measurements to obtain the measurement error. When the measurement error is less than or equal to the preset error, the latest actual density value is determined to be the final measured density value of the electrolyte; otherwise, the user is reminded to continue taking liquid for measurement. When the difference between the room temperature and the electrolyte temperature is large, the test error is reduced as much as possible; and the minimum measurement test of multiple measurements is recommended through the measurement number recommendation unit, thereby shortening the judgment process of multiple measurements and effectively improving the efficiency of electrolyte measurement.

[0132] Example 7:

[0133] Based on Example 6, the data storage unit includes:

[0134] The data sorting subunit is used to determine whether the maximum random serial number in the built-in storage space of the portable density measuring instrument is greater than or equal to the maximum preset serial number after receiving the storage instruction from the user;

[0135] If so, obtain the recommended number of measurements corresponding to the electrolyte density measurement, delete the stored data of the recommended number of measurements starting from the smallest random sequence number, and update the random sequence number sequence to obtain the latest random sequence number sequence;

[0136] The parsing storage subunit is used to parse the user's storage instruction, determine the user's storage type based on the parsing result, and generate a corresponding storage tag based on the storage type;

[0137] The latest random sequence number is automatically increased by 1, and the corresponding storage tag is added to the latest random sequence number, and the latest random sequence number is stored as the display density value and its corresponding detection time;

[0138] The temporary storage processing subunit is used to delete the data with temporary storage tags in the portable density measuring instrument and to synchronously revise the random serial number sequence.

[0139] In this embodiment, the maximum preset sequence number is 999.

[0140] The beneficial effects of the above technical solution: after receiving the user's storage instruction, the present invention determines whether the maximum random serial number in the built-in storage space of the portable density measuring instrument is greater than or equal to the maximum preset serial number through the data sorting subunit, and when the maximum random serial number is greater than or equal to the maximum preset serial number, obtains the recommended number of measurements corresponding to the electrolyte density measurement, deletes the recommended number of measurements starting from the minimum random serial number, and updates the random serial number sequence to obtain the latest random serial number sequence, while ensuring that the user's current electrolyte detection data storage needs are met, while minimizing the deletion of the original stored data, making it convenient for users to perform data queries on the portable density measuring instrument, and stores the displayed density value according to the storage type through the parsing storage subunit and the temporary processing subunit.

[0141] Example 8:

[0142] The present invention provides a method for using a portable density measuring instrument, such as Figure 5 Shown, including:

[0143] Step 1: Insert the battery into the battery compartment of the portable density meter and press the "OK / Power" button to turn on the portable density meter;

[0144] Step 2: After confirming that the liquid extraction tube has been inserted into the electrolyte to be tested, press the liquid extraction button until the end of the stroke to control the liquid extraction pump to extract the electrolyte. After confirming that there are no bubbles in the glass tube of the resonant tube sensor, start the density test;

[0145] Step 3: After standing for 2-3 seconds, read the density of the electrolyte based on the display adjustment module, and press the drain button until the pump discharges the electrolyte at the end of the stroke;

[0146] Step 4: Select the storage of the displayed density value on the control panel;

[0147] Step 5: Repeat steps 2-3 until the electrolyte density test is completed, then proceed to step 6;

[0148] Step 6: Press and hold the "Exit / Power Off" button to turn off the portable density meter.

[0149] In this embodiment, the battery in the battery compartment should be removed after shutting down the device.

[0150] In this embodiment, the control panel includes buttons such as "OK / Power On" and "Exit / Power Off," as well as ↑↓ and ←→ buttons, which can be used to search for serial numbers during data search. Press the "Function Settings" button to enter the loop screen, use the ←→ buttons to select a control, and then press the ↑↓ buttons to select a submenu after entering the menu. Users only need to use the "Storage Control" and "Detection Control" function menus to ensure the accuracy of the device.

[0151] Among them, after the actual density value is displayed, press the "OK / Power On" button to confirm that the actual density value needs to be stored, and then the user confirms long-term storage or short-term storage according to the menu display; after the actual density value is displayed, press the "Exit / Power Off" button to confirm that the actual density value does not need to be stored.

[0152] In this embodiment, selecting the storage of the display density value includes selecting whether to store and the storage type.

[0153] The beneficial effects of the above technical solution: the present invention inserts the battery into the battery compartment of the portable density meter, and presses the "OK / Power On" button to turn on the portable density meter. After confirming that the liquid extraction tube is inserted into the electrolyte to be tested, press the liquid extraction button until the end of the stroke to control the liquid extraction pump to extract the electrolyte. After confirming that there are no bubbles in the glass tube of the resonant tube sensor, start the density detection, and then after standing for 2-3 seconds, read the density value of the electrolyte based on the display adjustment module, and press the drain button until the end of the stroke to discharge the electrolyte by the liquid extraction pump, and select the storage of the displayed density value on the control panel. After the electrolyte density test is completed, long press the "Exit / Power Off" button to turn off and on the portable density meter. Through the simple operation of the portable density meter, high-precision measurement of the electrolyte can be completed, which greatly reduces personnel labor, improves work efficiency, and saves a lot of time for battery density measurement.

[0154] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A portable density measuring instrument, characterized in that: include: Power supply, liquid pump, resonant tube sensor, display adjustment module, temperature sensor, monitoring circuit board, control panel, interactive control module; Among them, the power supply is used to supply power to the monitoring circuit board; A liquid pump is used to extract the electrolyte from the battery and transport it to the resonant tube sensor; A resonant tube sensor for detecting the vibration frequency of the electrolyte and generating a corresponding current signal according to the vibration frequency; The temperature sensor is used to collect the current ambient temperature and electrolyte temperature of the temperature sensor and send them to the monitoring circuit board; The monitoring circuit board is used to determine the density measurement value of the electrolyte based on the current signal, and obtain the actual density value of the electrolyte after temperature compensation in combination with the collected electrolyte temperature, and convert the voltage signal corresponding to the actual density value into a voltage signal and send it to the display adjustment module; Display adjustment module, used to display the density value and temperature value of the electrolyte; The control panel includes a variety of buttons for users to perform control operations; The interactive control module also includes: a detection prompt unit, configured to compare the electrolyte temperature collected by the temperature sensor with the current ambient temperature to obtain a measured temperature difference; and when the measured temperature difference is greater than or equal to a preset value, play a multiple measurement prompt voice message to the user, and mark the actual density values ​​corresponding to the multiple measurements to obtain a marked density value; A data analysis unit is used to obtain the density difference between adjacent marked density values ​​corresponding to multiple measurements, and when the density difference is less than or equal to a preset threshold, a reminder is issued to the user to take the liquid again to obtain the latest actual density value; Comparing the latest actual density value with the actual density value corresponding to the last measurement of the multiple measurements to obtain a measurement error, and when the measurement error is less than or equal to a preset error, determining that the latest actual density value is the final measured density value of the electrolyte; Otherwise, the user is reminded to continue taking liquid for measurement.

2. A portable density measuring instrument according to claim 1, characterized in that: The resonant tube sensor is composed of two glass tubes with magnets, and two magnetic heads are installed above the magnets; Among them, one magnetic head is energized to generate a magnetic field, causing the glass tube with the magnet to resonate, and the other magnetic head is affected by another vibrating magnet to generate current. The different density electrolytes produce different vibration frequencies in the resonance tube, and different currents are generated on the magnetic heads.

3. A portable density measuring instrument according to claim 1, characterized in that: Monitoring circuit board, including: A data receiving unit is used to receive and record the circuit signal and temperature signal sent by the resonant tube sensor and the temperature sensor, and obtain the density measurement value of the electrolyte in combination with the corresponding relationship between the current signal size and the density of the electrolyte; a temperature compensation unit, configured to compare the density measurement value with an input density value of the electrolyte input into the battery at room temperature, obtain a difference between the density measurement value and the input density value, and multiply the difference by the electrolyte temperature density coefficient to obtain a temperature comparison compensation value; The density measurement value is compensated based on the temperature comparison compensation value to obtain the actual density value of the electrolyte; The current conversion unit is used to generate a corresponding voltage signal based on the actual density value, and send the voltage signal to the value display adjustment module for display.

4. A portable density measuring instrument according to claim 3, characterized in that: Temperature compensation unit, including: The temperature calibration subunit is used to calibrate the current electrolyte at high density and low density at room temperature, and to calibrate the current electrolyte at low and high temperature densities at the same high and low densities; The calibration analysis subunit is used to compare and analyze the low-temperature and high-temperature density calibration results under high density and low density with the high-density and low-density calibration results under normal temperature, respectively, to obtain the electrolyte temperature density coefficient.

5. The portable density measuring instrument according to claim 1, characterized in that: Resonance tube sensor, comprising: The liquid extraction control monitoring unit is used to send a liquid extraction instruction to the liquid extraction pump when it detects that the liquid extraction button is pressed, and to detect in real time the liquid level of the electrolyte extracted by the liquid extraction pump into the glass tube of the resonant tube sensor. When the electrolyte reaches the top of the glass tube, the liquid extraction is terminated; The measurement management unit is used to compare the volume of electrolyte extracted by the liquid pump with the maximum volume of the glass tube of the resonance tube sensor. When the two are consistent, the magnetic heads at both ends of the resonance tube sensor are controlled to vibrate to obtain a current signal; Otherwise, a voice prompt to the user to refill the liquid is issued; The drain control monitoring unit is used to return the electrolyte in the glass tube of the resonance tube sensor to the battery when it detects that the drain button is pressed.

6. The portable density measuring instrument according to claim 1, characterized in that: Display adjustment module, including: A data display unit, used to display the actual density value of the electrolyte sent by the monitoring circuit board; The data storage unit is used to automatically increase the random serial number by 1 after receiving the user's storage instruction, and store the display density value and its corresponding detection time according to the updated random serial number sequence in combination with the storage type selected by the user; Wherein, the storage type includes short-term storage and long-term storage; The data query unit is used to decrement or increment the random sequence number based on the user query direction.

7. The portable density measuring instrument according to claim 1, characterized in that: Also includes: Interactive control module, used for users to wirelessly interact with the portable density meter, including: A backup storage unit is used to back up the long-term storage data of the portable density meter before the portable density meter is shut down and upload it to the cloud; The wireless interaction unit is used to obtain the user's control instructions on the management APP and send the control instructions to the monitoring circuit board for analysis.

8. The portable density measuring instrument according to claim 7, characterized in that: Also includes: The interactive control module also includes: A measurement number recommendation unit is used to obtain the minimum measurement number corresponding to different measured temperature differences, classify the measured temperature differences based on the minimum measurement number, determine the temperature difference intervals corresponding to different minimum measurement numbers, and generate a measurement prompt table; When the detection prompt unit detects that the measured temperature difference is less than the preset value, the default recommended number of measurements for the current electrolyte is 1; When the detection prompt unit detects that the measured temperature difference is greater than or equal to a preset value, the detection prompt unit obtains a recommended number of measurements based on the measured temperature difference and the measurement prompt table, generates a measurement recommendation based on the recommended number of measurements, and obtains a measurement error between the actual density values ​​corresponding to the last measurement and the next measurement after the user confirms the measurement error; The measurement error is sent to a data analysis unit for error judgment.

9. The portable density measuring instrument according to claim 6, characterized in that: Also includes: A data storage unit comprising: The data sorting subunit is used to determine whether the maximum random serial number in the built-in storage space of the portable density measuring instrument is greater than or equal to the maximum preset serial number after receiving the storage instruction from the user; If so, obtain the recommended number of measurements corresponding to the electrolyte density measurement, delete the stored data of the recommended number of measurements starting from the smallest random sequence number, and update the random sequence number sequence to obtain the latest random sequence number sequence; The parsing storage subunit is used to parse the user's storage instruction, determine the user's storage type based on the parsing result, and generate a corresponding storage tag based on the storage type; The latest random sequence number is automatically increased by 1, and the corresponding storage tag is added to the latest random sequence number, and the latest random sequence number is stored as the display density value and its corresponding detection time; The temporary storage processing subunit is used to delete the data with temporary storage tags in the portable density measuring instrument and to synchronously revise the random serial number sequence.

10. A method for using a portable density measuring instrument, for operating a portable density measuring instrument according to any one of claims 1 to 9, characterized in that: include: Step 1: Insert the battery into the battery compartment of the portable density meter and press the "OK / Power" button to turn on the portable density meter; Step 2: After confirming that the liquid extraction tube has been inserted into the electrolyte to be tested, press the liquid extraction button until the end of the stroke to control the liquid extraction pump to extract the electrolyte. After confirming that there are no bubbles in the glass tube of the resonant tube sensor, start the density test; Step 3: After standing for 2-3 seconds, read the density of the electrolyte based on the display adjustment module, and press the drain button until the pump discharges the electrolyte at the end of the stroke; Step 4: Select the storage of the displayed density value on the control panel; Step 5: Repeat steps 2-3 until the electrolyte density test is completed, then proceed to step 6; Step 6: Press and hold the "Exit / Power Off" button to turn off the portable density meter.

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