Portable density measuring instrument and use method thereof

Abstract

The invention provides a portable density measuring instrument and a use method thereof. The portable density measuring instrument comprises a power supply, an infusion pump, a resonance tube sensor, a display adjusting module, a temperature sensor, a monitoring circuit board and a control panel. The power supply supplies power to the monitoring circuit board, the manual infusion pump is used for pumping electrolyte of the storage battery to the resonance tube sensor, different currents are generated according to different vibration frequencies generated by the electrolyte with different densities in the resonance tube and transmitted to the monitoring circuit board, and the monitoring circuit board converts current signals into voltage signals and supplies the voltage signals to the display adjusting module for display. The temperature sensor measures the temperature of the extracted electrolyte and the environment temperature. According to the invention, the electrolyte is directly extracted from the storage battery through the infusion pump for measurement, so that the difficulty in extracting the electrolyte is greatly reduced, the workload of workers is reduced, the working efficiency is improved, the measurement value is corrected through a temperature compensation mode while the resonance tube density measurement technology is adopted, and the electrolyte measurement precision is greatly improved.

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 batteries according to actual use requirements. Acid battery packs have strict requirements on the density of electrolyte in each battery when working. The closer the electrolyte density of each battery is, the better, preferably the same. This requires a high-precision density measuring instrument to ensure the accuracy of density measurement, which is beneficial to protecting batteries, improving battery working efficiency and extending battery working life.

[0003] The original lead-acid battery packs were all measured manually. Manual measurements were made using a glass tube density meter (with a minimum error of 0.005 g / cm 3 ), first you need to take out the electrolyte from the battery, pour it into the measuring tube, then look at the measured data with your eyes, and then pour the electrolyte back into the battery. Since the battery pack has a large number of batteries and is in a closed cabin with high temperature, high humidity and narrow space, manual density measurement is inefficient, labor-intensive, and difficult to control the accuracy of density measurement. Therefore, the present invention proposes a portable density measuring instrument and its use method. Summary of the invention

[0004] The present invention provides a portable density measuring instrument and a use method thereof, so as 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; Wherein, the power supply is used to supply power to the monitoring circuit board; A liquid pump, used to extract electrolyte from the battery and transport it to the resonant tube sensor; A resonant tube sensor, used to detect the vibration frequency of the electrolyte and generate 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 send the voltage signal corresponding to the value converted according to the actual density value 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.

[0006] 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; Among them, one magnetic head is energized to generate a magnetic field, causing the glass tube with a magnet to resonate, and the other magnetic head is affected by another vibrating magnet to generate current. The different vibration frequencies generated in the resonance tube by the electrolytes of different densities generate different currents on the magnetic heads.

[0007] Preferably, in a portable density measuring instrument, monitoring a circuit board comprises: A data receiving unit is used to receive and record the circuit signal and the temperature signal sent by the resonance 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, used to compare the density measurement value with the input density value of the electrolyte input into the battery at room temperature, obtain the difference between the density measurement value and the input density value, and multiply the difference with 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.

[0008] Preferably, in a portable density measuring instrument, the temperature compensation unit comprises: 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 temperature and high temperature at the same high density and low density; 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 to obtain the electrolyte temperature density coefficient.

[0009] Preferably, in a portable density measuring instrument, the resonant tube sensor comprises: 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 resonance tube sensor, and to end the liquid extraction when the electrolyte reaches the top of the glass tube; 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.

[0010] Preferably, in a portable density measuring instrument, the display adjustment module comprises: A data display unit, used to display the actual density value of the electrolyte sent by the monitoring circuit board; A data storage unit, which is used to automatically increase the random number by 1 after receiving a storage instruction from the user, and store the display density value and its corresponding detection time according to the updated random number sequence in combination with the storage type selected by the user; Wherein, the storage types include 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.

[0011] Preferably, in a portable density measuring instrument, it further includes: an interactive control module, which is used for a user to wirelessly interact with the portable density measuring instrument, including: A backup storage unit is used to back up the long-term storage data of the portable density measuring instrument before the portable density measuring instrument is shut down, and upload it to the cloud; A wireless interaction unit is used to obtain the control instructions of the user on the management APP and send the control instructions to the monitoring circuit board for analysis; A detection prompt unit is used to compare the electrolyte temperature collected by the temperature sensor with the current ambient temperature to obtain a measured temperature difference. When the measured temperature difference is greater than or equal to a preset value, multiple measurement prompt voices are played to the user, and actual density values ​​corresponding to the multiple measurements are marked to obtain a marked density value. A data analysis unit, 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, send a reminder to the user to take liquid again to obtain the latest actual density value; Compare the latest actual density value with the actual density value corresponding to the last measurement of multiple measurements to obtain a measurement error, and when the measurement error is less than or equal to a preset error, determine 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.

[0012] Preferably, in a portable density measuring instrument, it further includes: an interactive control module, and further includes: A measurement number recommendation unit is used to obtain the minimum measurement number corresponding to different measurement temperature differences, classify the measurement temperature differences based on the minimum measurement number, determine the temperature difference ranges 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 recommended number of measurements for the current electrolyte is 1 by default; When the detection prompt unit detects that the measured temperature difference is greater than or equal to the preset value, based on the measured temperature difference and the measurement prompt table, a recommended number of measurements is obtained, a measurement recommendation is generated based on the recommended number of measurements, and after confirmation by the user, a measurement error between the actual density values ​​corresponding to the last measurement and the next measurement is obtained; The measurement error is sent to a data analysis unit for error judgment.

[0013] Preferably, in a portable density measuring instrument, it further comprises: 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 yes, 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 storage parsing subunit is used to parse the user's storage instruction, determine the user's storage type according to 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 a display density value and its corresponding detection time; The temporary storage processing subunit is used to delete the data with the temporary storage tag in the portable density measuring instrument and to synchronously revise the random serial number sequence.

[0014] The present invention provides a method for using a portable density measuring instrument, comprising: 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 extraction tube is inserted into the electrolyte to be tested, press the extraction button until the end of the stroke to control the extraction pump to extract the electrolyte. After confirming that there are no bubbles in the glass tube of the resonance tube sensor, start the density test; Step 3: 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 liquid 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, and then proceed to step 6; Step 6: Press and hold the "Exit / Power Off" button to turn off the portable density meter.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects: The present invention supplies power to the monitoring circuit board through a power supply, and uses a manual liquid pump to extract the battery electrolyte to the resonance tube sensor. The resonance tube sensor is composed of two glass tubes with magnets. Two magnetic heads are installed above the magnets. One of the magnetic heads is energized to generate a magnetic field, so that the glass tube with the magnet resonates. The other magnetic head is affected by another vibrating magnet to generate current. The different density electrolytes generate different vibration frequencies in the resonance tube, and different currents are generated on the magnetic heads, which are transmitted to the monitoring circuit board. The circuit board converts the current signal into a voltage signal and supplies it to the display adjustment module to display the density. The temperature sensor is used to measure the temperature of the extracted electrolyte as a basis for temperature compensation, thereby improving the measurement accuracy of the electrolyte. The present invention directly extracts electrolyte from the battery for measurement through a liquid pump, which is quick and convenient, greatly reduces the difficulty of taking liquid and reduces the workload of manual labor, improves work efficiency, saves a lot of time for battery density measurement, and the present invention adopts the resonance tube density measurement technology while also correcting the measured value by temperature compensation, greatly improving the measurement accuracy of the electrolyte.

[0016] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures specifically pointed out in this application document.

[0017] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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: Figure 1 It is a structural schematic diagram of a portable density measuring instrument of the present invention; Figure 2 This is a structural schematic diagram of a portable density measuring instrument for monitoring a circuit board according to the present invention; Figure 3 It is a structural schematic diagram of a resonant tube sensor of a portable density measuring instrument of the present invention; Figure 4 It is a structural schematic diagram of a display adjustment module of a portable density measuring instrument of the present invention; Figure 5 The present invention is a flowchart of a method for using a portable density measuring instrument. DETAILED DESCRIPTION

[0019] The preferred embodiments of the present invention are described below in conjunction with 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.

[0020] Embodiment 1: The present invention provides a portable density measuring instrument, such as Figure 1 As shown, it includes: 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; Wherein, the power supply is used to supply power to the monitoring circuit board; A liquid pump, used to extract electrolyte from the battery and transport it to the resonant tube sensor; A resonant tube sensor, used to detect the vibration frequency of the electrolyte and generate a corresponding current signal according to the vibration frequency; The resonant tube sensor is composed of two glass tubes with magnets, and two magnetic heads are installed above the magnets; One magnetic head is electrified 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 resonance tube, which generates different currents on the magnetic heads. 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 send the voltage signal corresponding to the value converted according to the actual density value 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.

[0021] In this embodiment, the measurement accuracy error is within 0.001g / cm 3， And use digital display for direct reading.

[0022] In this embodiment, normal temperature refers to 25°C.

[0023] The beneficial effects of the above technical solution are as follows: the present invention supplies power to the monitoring circuit board through a power supply, and uses a manual liquid pump to extract the battery electrolyte to the resonance tube sensor. The resonance tube sensor is composed of two glass tubes with magnets. Two magnetic heads are installed above the magnets. One of the magnetic heads is energized to generate a magnetic field, so that the glass tube with the magnet resonates. The other magnetic head is affected by another vibrating magnet to generate current. The different density electrolytes generate different vibration frequencies in the resonance tube, and different currents are generated on the magnetic heads, which are transmitted to the monitoring circuit board. The circuit board converts the current signal into a voltage signal and supplies it to the display adjustment module to display the density. The temperature sensor is used to measure the temperature of the extracted electrolyte as a basis for temperature compensation, thereby improving the accuracy of electrolyte measurement. The present invention directly extracts electrolyte from the battery for measurement through a liquid pump, which is quick and convenient, greatly reduces the difficulty of taking liquid and reduces the workload of manual labor, improves work efficiency, saves a lot of time for battery density measurement, and the present invention adopts the resonance tube density measurement technology while also correcting the measured value by temperature compensation, greatly improving the accuracy of electrolyte measurement.

[0024] Embodiment 2: Based on Example 1, the circuit board is monitored, such as Figure 2 As shown, including: A data receiving unit is used to receive and record the circuit signal and the temperature signal sent by the resonance 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, used to compare the density measurement value with the input density value of the electrolyte input into the battery at room temperature, obtain the difference between the density measurement value and the input density value, and multiply the difference with 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.

[0025] In this embodiment, the density measurement value refers to the density value obtained by the resonance tube sensor through the vibration frequency.

[0026] In this embodiment, the input density value refers to the density value of the electrolyte detected at room temperature before inputting into the battery. In this embodiment, the actual density value is the sum of the temperature comparison compensation value and the density measurement value.

[0027] In this embodiment, the electrolyte temperature density coefficient refers to the change in density value corresponding to a 1° C. change in electrolyte temperature.

[0028] The beneficial effects of the above technical solution are as follows: 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 process of electrolyte density detection, and can control the measurement error within a certain range, thereby improving the accuracy of electrolyte density detection.

[0029] Embodiment 3: Based on Example 2, the temperature compensation unit includes: 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 temperature and high temperature at the same high density and low density; 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 to obtain the electrolyte temperature density coefficient.

[0030] In this embodiment, high density refers to the highest density of the electrolyte, and low density refers to the lowest density of the electrolyte. Low temperature refers to 5°C, and high temperature refers to 50°C.

[0031] Beneficial effects of the above technical solution: The present invention first calibrates high density and low density at room temperature (25°C), and then uses electrolyte solutions of the same density to calibrate density at low temperature of 5°C and high temperature of 50°C, respectively, and compares and analyzes the low-temperature and high-temperature density calibration results of high density and low density with the high-density and low-density calibration results at room temperature, respectively, to obtain the electrolyte temperature density coefficient, and trains the determination of electrolyte temperature density coefficients of different electrolytes, effectively expanding the scope of use of portable density measuring instruments.

[0032] Embodiment 4: Based on Example 1, the resonant tube sensor, such as Figure 3 As shown, including: 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 resonance tube sensor, and to end the liquid extraction when the electrolyte reaches the top of the glass tube; 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.

[0033] 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 electrolyte charged in the battery.

[0034] 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 terminated; and 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 liquid extraction pump directly extracts the electrolyte from the battery for measurement, which is quick and convenient, greatly reduces the difficulty of liquid extraction and reduces the manual workload; the measurement management unit compares the volume of the electrolyte extracted by the liquid extraction pump with the maximum volume of the glass tube of the resonance tube sensor, and briefly judges 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.

[0035] Embodiment 5: Based on Example 1, the display adjustment module is as follows: Figure 4 As shown, including: A data display unit, used to display the actual density value of the electrolyte sent by the monitoring circuit board; A data storage unit, which is used to automatically increase the random number by 1 after receiving a storage instruction from the user, and store the display density value and its corresponding detection time according to the updated random number sequence in combination with the storage type selected by the user; Wherein, the storage types include 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.

[0036] In this embodiment, the built-in storage of the portable density measuring instrument can store 1000 data, with random serial numbers from 000 to 999.

[0037] The beneficial effects of the above technical solution are as follows: the present invention displays the actual density value of the electrolyte sent by the monitoring circuit board through the data display unit, directly displays numbers, ensures that the user can quickly read the density value, improves the density reading efficiency, and performs different types of storage of data through the data storage unit, which is convenient for the user's data archiving and subsequent search, and then uses the data query unit to decrease or increase the random sequence number based on the user's query direction, thereby realizing free switching between stored data.

[0038] Embodiment 6: Based on the first embodiment, a portable density measuring instrument further includes: an interactive control module, which is used for a user to wirelessly interact with the portable density measuring instrument, including: A backup storage unit is used to back up the long-term storage data of the portable density measuring instrument before the portable density measuring instrument is shut down, and upload it to the cloud; A wireless interaction unit is used to obtain the control instructions of the user on the management APP and send the control instructions to the monitoring circuit board for analysis; A detection prompt unit is used to compare the electrolyte temperature collected by the temperature sensor with the current ambient temperature to obtain a measured temperature difference. When the measured temperature difference is greater than or equal to a preset value, multiple measurement prompt voices are played to the user, and actual density values ​​corresponding to the multiple measurements are marked to obtain a marked density value. A data analysis unit, 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, send a reminder to the user to take liquid again to obtain the latest actual density value; Compare the latest actual density value with the actual density value corresponding to the last measurement of multiple measurements to obtain a measurement error, and when the measurement error is less than or equal to a preset error, determine 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; A measurement number recommendation unit is used to obtain the minimum measurement number corresponding to different measurement temperature differences, classify the measurement temperature differences based on the minimum measurement number, determine the temperature difference ranges 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 recommended number of measurements for the current electrolyte is 1 by default; When the detection prompt unit detects that the measured temperature difference is greater than or equal to the preset value, based on the measured temperature difference and the measurement prompt table, a recommended number of measurements is obtained, a measurement recommendation is generated based on the recommended number of measurements, and after confirmation by the user, a measurement error between the actual density values ​​corresponding to the last measurement and the next measurement is obtained; The measurement error is sent to a data analysis unit for error judgment.

[0039] 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.

[0040] In this embodiment, the preset threshold value range is [0, 2], and the preset error value range is [0, 0.2].

[0041] In this embodiment, the minimum number of measurements refers to the minimum recommended number of multiple measurements.

[0042] The above technical solution has the following effects: the present invention backs up the long-term storage data of the portable density measuring instrument before the portable density measuring instrument is shut down through the backup storage unit, and uploads it to the cloud, automatically backs up the data that the user needs to store for a long time, avoids 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, ensures that even after the original storage data is deleted, the user can find the original storage data through the cloud, and does not increase the memory of the portable density measuring instrument. At the same time, the user's demand for large-scale data storage is met, the control instructions of the user on the management APP are obtained through the wireless interaction unit, and the control instructions are sent to the monitoring circuit board for parsing to provide multiple possibilities for the portable density measuring instrument, which is convenient for the user to use, and in the detection process, the electrolyte temperature collected by the temperature sensor is compared with the current ambient temperature through the detection prompt unit to obtain the measured temperature difference. When the measured temperature difference is greater than or equal to the preset value, multiple measurement prompt voices are played, 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 multiple measurements are obtained through the data analysis unit. The density difference between the adjacent marked density values ​​is calculated. When the density difference is less than or equal to the preset threshold, a reminder is issued to the user to take 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 room temperature is significantly different from the electrolyte temperature, the test error is reduced as much as possible; and the minimum measurement test for 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.

[0043] Embodiment 7: Based on Embodiment 6, the data storage unit includes: 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 yes, 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 storage parsing subunit is used to parse the user's storage instruction, determine the user's storage type according to 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 a display density value and its corresponding detection time; The temporary storage processing subunit is used to delete the data with the temporary storage tag in the portable density measuring instrument and to synchronously revise the random serial number sequence.

[0044] In this embodiment, the maximum preset sequence number is 999.

[0045] The beneficial effects of the above technical solution are as follows: after receiving the user's storage instruction, the present invention determines whether the maximum random sequence number in the built-in storage space of the portable density measuring instrument is greater than or equal to the maximum preset sequence number through the data sorting subunit, and when the maximum random sequence number is greater than or equal to the maximum preset sequence number, obtains the recommended number of measurements corresponding to the electrolyte density measurement, deletes the recommended number of stored data starting from the minimum random sequence number, and updates the random sequence number sequence to obtain the latest random sequence number. While ensuring that the user's current electrolyte detection data storage needs are met, the deletion of the original stored data is reduced as much as possible, which is convenient for users to perform data query 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 storage processing subunit.

[0046] Embodiment 8: The present invention provides a method for using a portable density measuring instrument, such as Figure 5 As shown, including: 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 extraction tube is inserted into the electrolyte to be tested, press the extraction button until the end of the stroke to control the extraction pump to extract the electrolyte. After confirming that there are no bubbles in the glass tube of the resonance tube sensor, start the density test; Step 3: 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 liquid 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, and then proceed to step 6; Step 6: Press and hold the "Exit / Power Off" button to turn off the portable density meter.

[0047] In this embodiment, the battery in the battery compartment should be removed after shutting down the device.

[0048] In this embodiment, the buttons on the control panel, in addition to "OK / Power On" and "Exit / Power Off", also include ↑↓, ←→ buttons, which can be used to search for serial numbers during data search. Press the "Function Setting" button to enter the loop screen, use the ←→ keys to select control, and press the ↑↓ keys to control the selection of submenus after entering the menu. Users only need to use the "Storage Control" and "Detection Control" two function menus to ensure the accuracy of the device.

[0049] Among them, after the actual density value is displayed, press the "OK / Power On" key 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" key to confirm that the actual density value does not need to be stored.

[0050] In this embodiment, selecting the storage of the display density value includes selecting whether to store and the storage type.

[0051] The beneficial effects of the above technical solution are as follows: the present invention inserts the battery into the battery compartment of the portable density measuring instrument, and presses the "OK / Power On" button to turn on the portable density measuring instrument. 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 liquid discharge 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 measuring instrument. Through the simple operation of the portable density measuring instrument, high-precision measurement of the electrolyte can be completed, which greatly reduces the labor force of personnel, improves work efficiency, and saves a lot of time for battery density measurement.

[0052] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A portable density measuring instrument, characterized in that: include: Power supply, liquid pump, resonance tube sensor, display adjustment module, temperature sensor, monitoring circuit board, control panel; Wherein, the power supply is used to supply power to the monitoring circuit board; A liquid pump, used to extract electrolyte from the battery and transport it to the resonant tube sensor; A resonant tube sensor, used to detect the vibration frequency of the electrolyte and generate 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 send the voltage signal corresponding to the value converted according to the actual density value 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.

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 a magnet to resonate, and the other magnetic head is affected by another vibrating magnet to generate current. The different vibration frequencies generated in the resonance tube by the electrolytes of different densities generate different currents 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 the temperature signal sent by the resonance 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, used to compare the density measurement value with the input density value of the electrolyte input into the battery at room temperature, obtain the difference between the density measurement value and the input density value, and multiply the difference with 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, comprising: 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 temperature and high temperature at the same high density and low density; 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 to obtain the electrolyte temperature density coefficient.

5. A 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 resonance tube sensor, and to end the liquid extraction when the electrolyte reaches the top of the glass tube; 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. A 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; A data storage unit, which is used to automatically increase the random number by 1 after receiving a storage instruction from the user, and store the display density value and its corresponding detection time according to the updated random number sequence in combination with the storage type selected by the user; Wherein, the storage types include 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. A 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 measuring instrument before the portable density measuring instrument is shut down, and upload it to the cloud; A wireless interaction unit is used to obtain the control instructions of the user on the management APP and send the control instructions to the monitoring circuit board for analysis; A detection prompt unit is used to compare the electrolyte temperature collected by the temperature sensor with the current ambient temperature to obtain a measured temperature difference. When the measured temperature difference is greater than or equal to a preset value, multiple measurement prompt voices are played to the user, and actual density values ​​corresponding to the multiple measurements are marked to obtain a marked density value. A data analysis unit, 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, send a reminder to the user to take liquid again to obtain the latest actual density value; Compare the latest actual density value with the actual density value corresponding to the last measurement of multiple measurements to obtain a measurement error, and when the measurement error is less than or equal to a preset error, determine 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.

8. A 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 measurement temperature differences, classify the measurement temperature differences based on the minimum measurement number, determine the temperature difference ranges 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 recommended number of measurements for the current electrolyte is 1 by default; When the detection prompt unit detects that the measured temperature difference is greater than or equal to the preset value, based on the measured temperature difference and the measurement prompt table, a recommended number of measurements is obtained, a measurement recommendation is generated based on the recommended number of measurements, and after confirmation by the user, a measurement error between the actual density values ​​corresponding to the last measurement and the next measurement is obtained; The measurement error is sent to a data analysis unit for error judgment.

9. A 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 yes, 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 storage parsing subunit is used to parse the user's storage instruction, determine the user's storage type according to 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 a display density value and its corresponding detection time; The temporary storage processing subunit is used to delete the data with the temporary storage tag 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, 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 extraction tube is inserted into the electrolyte to be tested, press the extraction button until the end of the stroke to control the extraction pump to extract the electrolyte. After confirming that there are no bubbles in the glass tube of the resonance tube sensor, start the density test; Step 3: 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 liquid 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, and then proceed to step 6; Step 6: Press and hold the "Exit / Power Off" key to turn off the portable density meter.

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