CN113034022A - Remote monitoring system of BMS battery management system - Google Patents
Remote monitoring system of BMS battery management system Download PDFInfo
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Abstract
The invention discloses a remote monitoring system of a BMS battery management system, which is used for solving the problems that the existing BMS battery management system can not reasonably and intelligently feed back battery information, so that the information feedback quantity is large and the feedback of non-important information is caused, and comprises a battery management system, a wireless transmission module, a contact transmission module and a server; the battery management system is used for acquiring state parameter information of the battery pack, classifying the state parameter information to obtain a first data group and a second data group, transmitting the first data group to the server through the wireless transmission module, and transmitting the second data group to the server through the contact transmission module; the invention classifies the state parameter information and transmits the state parameter information in a wireless and contact way, thereby being convenient for reasonably classifying and transmitting data, feeding back and sending important data in time and transmitting some non-important parameter data in a contact way.
Description
Technical Field
The invention relates to the technical field of battery remote monitoring, in particular to a remote monitoring system of a BMS battery management system.
Background
The Battery Management System (BMS) is a set of control system for protecting the use safety of the power battery, constantly monitors the use state of the battery, relieves the inconsistency of the battery pack through necessary measures, provides guarantee for the use safety of new energy vehicles, along with the wide application of new energy electric vehicles, the capacity, the safety, the health state and the cruising ability of the battery increasingly become important concerns, the battery management system is a system for monitoring and controlling the battery, the acquired battery information is fed back to a user in real time, and meanwhile, the performance of the battery is fully exerted according to the acquired information adjusting parameters. The existing BMS battery management system can not reasonably and intelligently feed back battery information, so that the information feedback quantity is large and the feedback of non-important information is caused.
Disclosure of Invention
The invention aims to provide a remote monitoring system of a BMS battery management system in order to solve the problems that the existing BMS battery management system can not reasonably and intelligently feed back battery information, so that the information feedback quantity is large and the feedback of non-important information is caused; according to the invention, the state parameter information is classified and transmitted in a wireless and contact manner, so that the data can be classified and transmitted reasonably, the important data can be fed back and sent in time conveniently, and meanwhile, some non-important parameter data can be transmitted in a contact manner; and the corresponding storage end is selected through the storage value, so that the state parameter information is intelligently and reasonably stored, and the storage pressure of the server is reduced.
The purpose of the invention can be realized by the following technical scheme:
a remote monitoring system of a BMS battery management system comprises a battery management system, a wireless transmission module, a contact transmission module and a server; the battery management system is used for acquiring state parameter information of the battery pack, classifying the state parameter information to obtain a first data group and a second data group, transmitting the first data group to the server through the wireless transmission module, and transmitting the second data group to the server through the contact transmission module; and after receiving the first data group and the second data group, the server merges the first data group and the second data group to obtain state parameter information and distributes and stores the state parameter information.
Preferably, the battery management system includes:
the sensor unit is a plurality of sensors for acquiring the state parameter information of the single batteries in the battery pack, and the state parameter information comprises the residual electric quantity of the batteries, the terminal voltage of the batteries, the temperature, the charging and discharging current, the total voltage of the battery pack and the acquisition time of corresponding state parameters;
and the classification unit is used for collecting and classifying the state parameter information, and the specific classification process is as follows: setting a plurality of first parameter names in a first data group, matching state parameter information with the plurality of first parameter names, and marking the state parameter as first data when the state parameter in the state parameter information belongs to the first parameter names; setting all state parameters in the state parameter information to correspond to a preset normal range, matching the numerical values of the state parameters with the corresponding preset normal range, and marking the state parameters as first data when the numerical values of the state parameters do not belong to the preset normal range or are in the preset normal range and the difference between the numerical values of the state parameters and one endpoint value of the preset normal range is less than a set threshold value; and summarizing all the first data together to obtain a first data group, and summarizing the state parameters except the first data in the state parameter information together to obtain a second data group.
Preferably, the wireless transmission module includes 5G transmission, 4G transmission, 3G transmission and WLAN transmission.
Preferably, the contact transmitting module includes a feeding unit installed at the battery charging hole and a receiving unit installed at the charging head; when the charging head is inserted into the battery charging hole, the conveying unit is in contact with and is in communication connection with the receiving unit, the conveying unit sends the second data to the receiving unit, and the receiving unit is in communication connection with the server through the optical fiber and feeds the received second data back to the server.
Preferably, the server includes:
the storage allocation module is used for allocating and storing the state parameter information, and comprises the following specific steps:
s1: sending a position acquisition instruction to a plurality of storage terminals, acquiring current real-time positions of the storage terminals and residual memories of the storage areas, and calculating the distance difference between the current real-time positions and the positions of the server to obtain a storage space and marking the storage space as C1;
s2: marking the remaining memory of the storage area as C2; acquiring a storage and reading effective value of a storage end and marking the storage and reading effective value as C3;
s3: carrying out normalization processing on the storage space, the residual memory and the storage reading effective value of the storage end and taking the numerical values; by means of storage and distribution formulas
Obtaining a storage value CQ of a storage end; wherein, λ is an error correction factor, and the value is 0.94; g1, g2 and g3 are all preset proportionality coefficients;
s4: and sending the state parameter information to a storage terminal with the maximum storage value for storage, and increasing the total storage times of the storage terminal once.
Preferably, the server further comprises:
and the registration login module is used for submitting registration information through the mobile phone terminal by a worker for registration and sending the registration information which is successfully registered to the server for storage, and meanwhile, the server marks the mobile phone terminal which is successfully registered as a storage end, and the registration information comprises the number, the model, the name and the age of the mobile phone terminal of the worker.
Preferably, the server further comprises:
the information reading module is used for reading the state parameter information stored in the storage end, and when the reading fails, the total number of times of the reading failure of the storage end is increased once;
the information analysis module is used for acquiring the reading start time and the reading completion time of the state parameter information stored in the storage end by the information reading module and analyzing the reading start time and the reading completion time, and the specific analysis steps are as follows:
SS 1: calculating the time difference between the reading starting time and the reading finishing time to obtain a reading time length, and calculating the time length difference between the reading time length and the set threshold time length to obtain an advance time length difference when the reading time length is smaller than the set threshold time length;
SS 2: acquiring all the advanced time length differences of the storage end, summing the advanced time length differences to obtain the total advanced time length, and marking the total advanced time length as QF 1; the method comprises the steps of obtaining communication packages of a storage end, setting all the communication packages to correspond to a communication preset value, matching the communication packages of the storage end with all the communication packages to obtain the corresponding communication preset value, and marking the communication preset value as QF 2;
SS 3: marking the total storage times and the total reading failure times of the storage ends as QF3 and QF4 respectively; then, normalizing the total advanced time, the preset communication value, the total storage times and the total reading failure times of the storage end and taking the numerical values of the total storage times, the preset communication values, the total storage times and the total reading failure times;
SS 4: using formulas
Obtaining a storage and reading effective value C3 of a storage end; wherein h1, h2, h3 and h4 are all preset weight coefficients, and h4>h2>h3>h1>1。
Preferably, the server further comprises a remote monitoring module, the remote monitoring module is configured to obtain and display the state parameter information in real time, and the specific display process is as follows:
the method comprises the steps that a user inputs a battery number and a search time period to a remote monitoring module through an intelligent terminal, and after the remote monitoring module receives the battery number and the search time period input by the user, all state parameter information of a battery corresponding to the battery number in the search time period is obtained through a search storage terminal to obtain a query result;
meanwhile, a face acquisition instruction is fed back to the intelligent terminal of the user, the intelligent terminal of the user executes the face acquisition instruction after receiving the face acquisition instruction, and a camera on the intelligent terminal shoots a face picture of the user at a preset angle and sends the face picture to the remote monitoring module;
the remote monitoring module extracts the face contour of the shot face picture, and fills preset colors in the face contour to obtain a first comparison contour; filling a preset color into the stored face contour at a distance of half a meter from the intelligent terminal to obtain a second comparison contour;
selecting the central points of the first contrast contour and the second contrast contour, overlapping the central points of the first contrast contour and the second contrast contour, counting the area of the non-overlapped contrast contours, and marking the area as MJ;
when the area of the first comparison contour is larger than that of the second comparison contour, generating a reduction instruction, and obtaining a word size value MZ by using a formula MZ = MB-MJ × b 1; wherein MB is a standard word size value preset at half a meter; b1 is an area font size conversion coefficient;
when the area of the first contrast contour is smaller than that of the second contrast contour, generating an amplification instruction, and obtaining a word size value MZ by using a formula MZ = MB + MJ × b 2; wherein b2 is an area font size conversion factor;
the method comprises the steps of setting a plurality of display word sizes, enabling each display word size to correspond to a numerical range, matching the word size value with the numerical range to obtain a corresponding word size, sending an inquiry result, the matched word size and an amplification instruction or a reduction instruction to an intelligent terminal of a user, and displaying the inquiry result in a size corresponding to the matched word size after the intelligent terminal of the user receives the inquiry result, the matched word size and the amplification instruction or the reduction instruction.
Compared with the prior art, the invention has the beneficial effects that:
1. the battery management system collects the state parameter information of the battery pack, classifies the state parameter information to obtain a first data group and a second data group, then transmits the first data group to the server through the wireless transmission module, and transmits the second data group to the server through the contact transmission module; by classifying the state parameter information and transmitting the state parameter information in a wireless and contact manner, the data can be classified and transmitted reasonably, the important data can be fed back and sent in time conveniently, and meanwhile, some non-important parameter data can be transmitted in a contact manner;
2. the server receives the first data group and the second data group, then combines the first data group and the second data group to obtain the state parameter information, distributes and stores the state parameter information through the storage distribution module, obtains the storage value of the storage end by normalizing the storage interval, the residual internal memory and the storage reading effective value of the storage end, and selects the corresponding storage end through the storage value, so that the state parameter information is intelligently and reasonably stored, and the storage pressure of the server is reduced.
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In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings;
FIG. 1 is a schematic block diagram of the present invention as a whole;
fig. 2 is a schematic block diagram of a server of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a remote monitoring system of a BMS battery management system includes a battery management system, a wireless transmission module, a contact transmission module, and a server; the battery management system is used for acquiring state parameter information of the battery pack, classifying the state parameter information to obtain a first data group and a second data group, and then transmitting the first data group to the server through the wireless transmission module, wherein the wireless transmission module comprises 5G transmission, 4G transmission, 3G transmission and WLAN transmission; transmitting the second data group to the server through the contact transmission module; the contact transmission module comprises a conveying unit arranged at the charging hole of the battery and a receiving unit arranged on the charging head; when the charging head is inserted into the battery charging hole, the conveying unit is in contact and communication connection with the receiving unit, the conveying unit sends second data to the receiving unit, the receiving unit is in communication connection with the server through optical fibers and feeds the received second data back to the server, and the contact transmission module is arranged, so that the receiving unit can be installed on the charging head corresponding to the charging pile when the battery is charged, and then the second data generated in the battery use time period is transmitted to the server in a contact transmission mode, on one hand, all state parameter information of the battery can be remotely monitored, and on the other hand, the total data transmission amount of wireless transmission can be reduced;
the server receives the first data group and the second data group, then combines the first data group and the second data group to obtain state parameter information, and distributes and stores the state parameter information through a storage distribution module, and the specific steps are as follows:
s1: sending a position acquisition instruction to a plurality of storage terminals, acquiring current real-time positions of the storage terminals and residual memories of the storage areas, and calculating the distance difference between the current real-time positions and the positions of the server to obtain a storage space and marking the storage space as C1;
s2: marking the remaining memory of the storage area as C2; acquiring a storage and reading effective value of a storage end and marking the storage and reading effective value as C3;
s3: carrying out normalization processing on the storage space, the residual memory and the storage reading effective value of the storage end and taking the numerical values; by means of storage and distribution formulas
Obtaining a storage value CQ of a storage end; wherein, λ is an error correction factor, and the value is 0.94; g1, g2 and g3 are all preset proportionality coefficients; g1, g2 and g3 take the values of 1.65, 2.78 and 2.14 respectively;
s4: sending the state parameter information to a storage terminal with the maximum storage value for storage, and increasing the total storage times of the storage terminal once;
the sensor unit is a plurality of sensors for acquiring the state parameter information of the single batteries in the battery pack, and the state parameter information comprises the residual electric quantity of the batteries, the terminal voltage of the batteries, the temperature, the charging and discharging current, the total voltage of the battery pack and the acquisition time of corresponding state parameters;
and the classification unit is used for collecting and classifying the state parameter information, and the specific classification process is as follows: setting a plurality of first parameter names in a first data group, matching state parameter information with the plurality of first parameter names, and marking the state parameter as first data when the state parameter in the state parameter information belongs to the first parameter names; setting all state parameters in the state parameter information to correspond to a preset normal range, matching the numerical values of the state parameters with the corresponding preset normal range, and marking the state parameters as first data when the numerical values of the state parameters do not belong to the preset normal range or are in the preset normal range and the difference between the numerical values of the state parameters and one endpoint value of the preset normal range is less than a set threshold value; summarizing all the first data together to obtain a first data group, summarizing the state parameters except the first data in the state parameter information together to obtain a second data group;
referring to fig. 2, the server includes a storage allocation module, a registration module, an information reading module, an information analysis module, and a remote monitoring module; the battery management system comprises a sensor unit and a classification unit;
the registration login module is used for submitting registration information to register through the mobile phone terminal by a worker and sending the registration information which is successfully registered to the server for storage, and meanwhile, the server marks the mobile phone terminal which is successfully registered as a storage end, and the registration information comprises the number, the model, the name and the age of the mobile phone terminal of the worker; the registration login module is also used for submitting user information and registering; the user information comprises a battery number, a name, an age and a face outline at a position half a meter away from the intelligent terminal of the user;
the information reading module is used for reading the state parameter information stored in the storage end, and when the reading fails, the total number of times of the reading failure of the storage end is increased once;
the information analysis module is used for acquiring the reading start time and the reading completion time of the state parameter information stored in the storage end read by the information reading module and analyzing the reading start time and the reading completion time, and the specific analysis steps are as follows:
SS 1: calculating the time difference between the reading starting time and the reading finishing time to obtain a reading time length, and calculating the time length difference between the reading time length and the set threshold time length to obtain an advance time length difference when the reading time length is smaller than the set threshold time length;
SS 2: acquiring all the advanced time length differences of the storage end, summing the advanced time length differences to obtain the total advanced time length, and marking the total advanced time length as QF 1; the method comprises the steps of obtaining communication packages of a storage end, setting all the communication packages to correspond to a communication preset value, matching the communication packages of the storage end with all the communication packages to obtain the corresponding communication preset value, and marking the communication preset value as QF 2;
SS 3: marking the total storage times and the total reading failure times of the storage ends as QF3 and QF4 respectively; then, normalizing the total advanced time, the preset communication value, the total storage times and the total reading failure times of the storage end and taking the numerical values of the total storage times, the preset communication values, the total storage times and the total reading failure times;
SS 4: using formulas
Obtaining a storage and reading effective value C3 of a storage end; wherein h1, h2, h3 and h4 are all preset weight coefficients, and h4>h2>h3>h1>1; the values of h1, h2, h3 and h4 are 1.2, 1.8, 1.6 and 2.7 respectively;
the remote monitoring module is used for acquiring and displaying the state parameter information in real time, and the specific display process is as follows:
the method comprises the steps that a user inputs a battery number and a search time period to a remote monitoring module through an intelligent terminal, and after the remote monitoring module receives the battery number and the search time period input by the user, all state parameter information of a battery corresponding to the battery number in the search time period is obtained through a search storage terminal to obtain a query result;
meanwhile, a face acquisition instruction is fed back to the intelligent terminal of the user, the intelligent terminal of the user executes the face acquisition instruction after receiving the face acquisition instruction, and a camera on the intelligent terminal shoots a face picture of the user at a preset angle and sends the face picture to the remote monitoring module;
the remote monitoring module extracts the face contour of the shot face picture, and fills preset colors in the face contour to obtain a first comparison contour; filling a preset color into the stored face contour at a distance of half a meter from the intelligent terminal to obtain a second comparison contour;
selecting the central points of the first contrast contour and the second contrast contour, overlapping the central points of the first contrast contour and the second contrast contour, counting the area of the non-overlapped contrast contours, and marking the area as MJ;
when the area of the first comparison contour is larger than that of the second comparison contour, generating a reduction instruction, and obtaining a word size value MZ by using a formula MZ = MB-MJ × b 1; wherein MB is a standard word size value preset at half a meter; b1 is an area font size conversion coefficient; the value is 0.011;
when the area of the first contrast contour is smaller than that of the second contrast contour, generating an amplification instruction, and obtaining a word size value MZ by using a formula MZ = MB + MJ × b 2; wherein b2 is an area font size conversion factor; the value is 0.037;
the method comprises the steps of setting a plurality of display word sizes, enabling each display word size to correspond to a numerical range, matching the word size value with the numerical range to obtain a corresponding word size, sending an inquiry result, the matched word size and an amplification instruction or a reduction instruction to an intelligent terminal of a user, and displaying the inquiry result in a size corresponding to the matched word size after the intelligent terminal of the user receives the inquiry result, the matched word size and the amplification instruction or the reduction instruction.
When the battery management system is used, the battery management system collects the state parameter information of the battery pack, classifies the state parameter information to obtain a first data group and a second data group, then transmits the first data group to the server through the wireless transmission module, and transmits the second data group to the server through the contact transmission module; by classifying the state parameter information and transmitting the state parameter information in a wireless and contact manner, the data can be classified and transmitted reasonably, the important data can be fed back and sent in time conveniently, and meanwhile, some non-important parameter data can be transmitted in a contact manner; the server receives the first data group and the second data group, then merges the first data group and the second data group to obtain state parameter information, distributes and stores the state parameter information through the storage distribution module, obtains storage values of the storage ends by normalizing the storage intervals, the residual memories and the storage reading values of the storage ends, and selects the corresponding storage ends through the storage values, so that the state parameter information is intelligently and reasonably stored, and the storage pressure of the server is reduced.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (8)
1. A remote monitoring system of a BMS battery management system comprises a battery management system, a wireless transmission module, a contact transmission module and a server; the method is characterized in that:
the battery management system is used for acquiring state parameter information of the battery pack, classifying the state parameter information to obtain a first data group and a second data group, transmitting the first data group to the server through the wireless transmission module, and transmitting the second data group to the server through the contact transmission module;
and after receiving the first data group and the second data group, the server merges the first data group and the second data group to obtain state parameter information and distributes and stores the state parameter information.
2. The remote monitoring system of a BMS battery management system according to claim 1, characterized in that the battery management system comprises:
the sensor unit is a plurality of sensors for acquiring the state parameter information of the single batteries in the battery pack, and the state parameter information comprises the residual electric quantity of the batteries, the terminal voltage of the batteries, the temperature, the charging and discharging current, the total voltage of the battery pack and the acquisition time of corresponding state parameters;
and the classification unit is used for collecting and classifying the state parameter information, and the specific classification process is as follows: setting a plurality of first parameter names in a first data group, matching state parameter information with the plurality of first parameter names, and marking the state parameter as first data when the state parameter in the state parameter information belongs to the first parameter names; setting all state parameters in the state parameter information to correspond to a preset normal range, matching the numerical values of the state parameters with the corresponding preset normal range, and marking the state parameters as first data when the numerical values of the state parameters do not belong to the preset normal range or are in the preset normal range and the difference between the numerical values of the state parameters and one endpoint value of the preset normal range is less than a set threshold value; and summarizing all the first data together to obtain a first data group, and summarizing the state parameters except the first data in the state parameter information together to obtain a second data group.
3. The remote monitoring system of a BMS battery management system according to claim 1, wherein said wireless transmission module comprises 5G transmission, 4G transmission, 3G transmission and WLAN transmission.
4. The remote monitoring system of a BMS battery management system according to claim 1, wherein the contact transmission module comprises a feeding unit mounted at a battery charging hole and a receiving unit mounted at a charging head; when the charging head is inserted into the battery charging hole, the conveying unit is in contact with and is in communication connection with the receiving unit, the conveying unit sends the second data to the receiving unit, and the receiving unit is in communication connection with the server through the optical fiber and feeds the received second data back to the server.
5. The remote monitoring system of a BMS battery management system according to claim 1, comprising within said server:
the storage allocation module is used for allocating and storing the state parameter information, and comprises the following specific steps:
s1: sending a position acquisition instruction to a plurality of storage terminals, acquiring current real-time positions of the storage terminals and residual internal memories of storage areas, and calculating the distance difference between the current real-time positions and the positions of the server to obtain storage intervals;
s2: acquiring a storage and reading effective value of a storage end and a residual memory of a storage area; carrying out normalization processing on the storage space, the residual memory and the storage reading effective value of the storage end and taking the numerical values; obtaining a storage value of a storage end by using a storage value formula;
s3: and sending the state parameter information to a storage terminal with the maximum value to be stored.
6. The remote monitoring system of a BMS battery management system according to claim 5, further comprising within the server:
and the registration login module is used for submitting registration information through the mobile phone terminal by a worker for registration and sending the registration information which is successfully registered to the server for storage, and meanwhile, the server marks the mobile phone terminal which is successfully registered as a storage end, and the registration information comprises the number, the model, the name and the age of the mobile phone terminal of the worker.
7. The remote monitoring system of a BMS battery management system according to claim 5, further comprising within the server:
the information reading module is used for reading the state parameter information stored in the storage end, and when the reading fails, the total number of times of the reading failure of the storage end is increased once;
the information analysis module is used for acquiring the reading start time and the reading completion time of the state parameter information stored in the storage end by the information reading module and analyzing the reading start time and the reading completion time, and the specific analysis steps are as follows:
SS 1: calculating the time difference between the reading starting time and the reading finishing time to obtain a reading time length, and calculating the time length difference between the reading time length and the set threshold time length to obtain an advance time length difference when the reading time length is smaller than the set threshold time length;
SS 2: acquiring all the time difference in advance of the storage end and summing to obtain the total time in advance; the method comprises the steps of obtaining communication packages of a storage end, setting all the communication packages to correspond to a communication preset value, and matching the communication packages of the storage end with all the communication packages to obtain the corresponding communication preset values;
SS 3: acquiring the total storage times and the total reading failure times of a storage end; normalizing the total advanced time, the preset communication value, the total storage times and the total reading failure times of the storage end and taking the numerical values of the total storage times and the total reading failure times; and obtaining the storage and reading effective value of the storage end by using a formula.
8. The remote monitoring system of a BMS battery management system according to claim 1, further comprising within the server:
the remote monitoring module is used for acquiring and displaying the state parameter information in real time, and the specific display steps are as follows:
v1: the method comprises the steps that a user inputs a battery number and a search time period to a remote monitoring module through an intelligent terminal, and after the remote monitoring module receives the battery number and the search time period input by the user, all state parameter information of a battery corresponding to the battery number in the search time period is obtained through a search storage terminal to obtain a query result; meanwhile, a face acquisition instruction is fed back to the intelligent terminal of the user, the intelligent terminal of the user executes the face acquisition instruction after receiving the face acquisition instruction, and a camera on the intelligent terminal shoots a face picture of the user at a preset angle and sends the face picture to the remote monitoring module;
v2: the remote monitoring module extracts the face contour of the shot face picture, and fills preset colors in the face contour to obtain a first comparison contour; filling a preset color into the stored face contour at a distance of half a meter from the intelligent terminal to obtain a second comparison contour;
v3: selecting the central points of the first contrast contour and the second contrast contour, overlapping the central points of the first contrast contour and the second contrast contour, counting the area of the non-overlapped contrast contours, and marking the area as MJ;
when the area of the first comparison contour is larger than that of the second comparison contour, generating a reduction instruction, and obtaining a word size value MZ by using a formula MZ = MB-MJ × b 1; wherein MB is a standard word size value preset at half a meter; b1 is an area font size conversion coefficient;
when the area of the first contrast contour is smaller than that of the second contrast contour, generating an amplification instruction, and obtaining a word size value MZ by using a formula MZ = MB + MJ × b 2; wherein b2 is an area font size conversion factor;
v4: the method comprises the steps of setting a plurality of display word sizes, enabling each display word size to correspond to a numerical range, matching the word size value with the numerical range to obtain a corresponding word size, sending an inquiry result, the matched word size and an amplification instruction or a reduction instruction to an intelligent terminal of a user, and displaying the inquiry result in a size corresponding to the matched word size after the intelligent terminal of the user receives the inquiry result, the matched word size and the amplification instruction or the reduction instruction.
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