Automatic personnel roll call system and roll call method
By designing an automatic personnel naming system, using technologies such as face recognition and fingerprint entry, the problem of middle school students in colleges and universities clocking in but not attending classes is solved, and impersonation is prevented, and accurate student management and naming records are achieved.
Patent Information
- Application Number
- CN202510129324.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-05
- Publication Date
- 2025-05-06
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
When the existing nomination system is used in colleges and universities, there is a situation where students check in but not attending classes, and there may be a problem of impersonation when teachers call.
An automatic personnel naming system was designed, including a data terminal system, a sub-nouncing module, a parent naming module, a timing module, a voice input module, an electrical signal conversion module, etc., and identity verification is carried out through facial recognition, fingerprint input, etc., and information sharing and timing management are carried out between the mother naming module and the child naming module to ensure that students’ clock in information is accurate and prevent impostors.
It realizes accurate recording and display of student clocking information, promptly reminds teachers of students to have absenteeism, avoids the problem of impersonation, and improves the management efficiency and accuracy of the naming system.
Smart Images
Figure CN119942667A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of automatic personnel roll-calling, in particular to an automatic personnel roll-calling system and a roll-calling method. Background Art
[0002] A roll call system is a tool or software system used to record and manage the attendance of a specific group of people. It is widely used in schools, enterprises and other scenarios.
[0003] The roll call system can record the attendance status of students or employees in real time, such as attendance, absence, lateness, early departure, etc. The system will automatically mark the corresponding status according to the roll call time and the response of the students or employees;
[0004] The roll call system can help teachers better manage classroom order, understand students' attendance, and promptly discover abnormal attendance problems such as frequent lateness and absences, so as to communicate with students or parents, solve problems, and ensure the normal progress of teaching activities;
[0005] However, when the above roll call system is used in schools, a roll call device is placed at the door of the classroom, and students enter their fingerprints when entering the classroom, or punch in for class through face recognition. After the students punch in, the punch-in record will be saved to prove that the students have punched in and arrived at the class. Later, the teacher can call the roll by shouting the names during class.
[0006] However, when the above roll call method is actually used, for example, in schools, especially in colleges and universities such as junior colleges and undergraduate colleges, students may not attend classes in fixed classrooms during class, and even teachers and students may not be familiar with each other. When students use a time clock to punch in, they may leave the class after punching in. Although the punch-in information is recorded, the students did not actually come to class. When the teacher calls the roll or asks questions, roommates may answer questions about students who did not come.
[0007] In summary, in order to solve the technical problems raised in this article, the present invention proposes an automatic personnel roll-call system and roll-call method. Summary of the invention
[0008] The present invention proposes an automatic personnel roll-call system, comprising:
[0009] A data terminal system, the data terminal system includes a data storage terminal; used for storing personnel information;
[0010] A sub-roll-call module, wherein the roll-call module includes a roll-call device, the roll-call device is provided with a fingerprint entry unit and a face recognition unit, and the roll-call module is connected to a data terminal system;
[0011] A mother roll-call module, the mother roll-call module includes a block display, the mother roll-call module is connected to a data terminal system, and the data in the data terminal system is shared with the data in the mother roll-call module;
[0012] A timing module, wherein the timing module is connected to the main roll-call module and the sub-roll-call module, and the duration displayed on the sub-roll-call module is the same as that on the main roll-call module; and timing is performed simultaneously;
[0013] A voice input module, which is connected to the mother roll-call module;
[0014] The electric signal conversion module connects the sub-roll calling module with the main roll calling module respectively; and converts the personnel information recorded in the main roll calling module and the sub-roll calling module.
[0015] As a preferred solution of the present application; the sub-roll call module includes a position locking module, and the position locking module is used to lock the personnel information in the sub-roll call module; the locking module is connected to the timing module; when the time in the timing module is reached, the locking module unlocks the personnel information in the sub-roll call module.
[0016] As a preferred solution of the present application, the locking module further comprises an information cleaning unit, which is used to clear the personnel information after the locking module is unlocked, and the cleaning unit does not clear the data in the data terminal module.
[0017] As a preferred solution of the present application; a display module is provided in the sub-roll-call module, and the display module is connected to the display in the parent roll-call module; the display module and the display on the parent roll-call module both have a red light alarm unit; when the information displayed on the parent roll-call module is different from the information displayed on the sub-roll-call module, the red light alarm unit issues an alarm.
[0018] As a preferred solution of the present application, the sub-roll calling module and the main roll calling module are also provided with a data recording unit, and the data recording unit is used for the personnel information that has not been unlocked in the locking module.
[0019] As a preferred solution of the present application; the sub-roll calling module also includes a mobile phone placement unit, and the mobile phone placement unit includes a mobile phone placement slot opened on the sub-roll calling module; the interior of the mobile phone placement slot has a wireless charging module.
[0020] As a preferred solution of the present application; an electronic component sensing unit is arranged inside the mobile phone placement unit, the electronic component sensing unit is connected to the red light alarm unit in the parent roll-call module, and the electronic component sensing unit is connected to the red light alarm unit in the child roll-call unit.
[0021] As a preferred solution of the present application; the automatic personnel roll call system also includes a punching module, the punching module includes a face recognition module and a fingerprint recognition module, and a display screen is provided on the punching module; the punching module is connected to the data terminal system, and the punching module is connected to the parent roll call module; the punching module is connected to the child roll call module, and the punching module is connected to the electronic original sensing unit.
[0022] As a preferred solution of the present application, the punching module also includes an automatic lifting module, which is connected to the face recognition module arranged on the punching module; the lifting module realizes the up and down lifting of the face recognition module through the electric telescopic device arranged above it.
[0023] An automatic personnel roll-call method is applied to the above-mentioned automatic personnel roll-call system, and the method comprises the following steps:
[0024] S1: First, the counselor or class teacher leads the students to enter information in the sub-roll-call module in the class; the sub-roll-call module is a punch-in roll-call device set on the desk in the class; after the students enter their identity information in the sub-roll-call module, the sub-roll-call module transmits the entered information to the data terminal system;
[0025] S2: The terminal system records how many students there are in a class according to the school's report. After the student information of a class is entered, the data terminal system saves the student information of a class as a module. The data terminal system records the student information. When the student graduates and drops out, the staff will clear the corresponding student information from the data terminal system.
[0026] S3: In the actual use of the roll-call system, a main roll-call module and multiple sub-roll-call modules are set for a class; and a timing module is set in both the main roll-call module and the sub-roll-call module; the timing module is a countdown, and the countdown time is modified accordingly when the teacher is teaching;
[0027] S4: The teacher can find the class to be taught in the main roll-call module on the classroom podium, and then call up the personnel information of the corresponding class; the personnel information is displayed on the display on the main roll-call module; then after the students enter the class, they sit down at the corresponding desks, and the students punch in and take roll call on the sub-roll-call module;
[0028] S5: Since the main roll-call module and the sub-roll-call module are connected through the electrical signal conversion module, after each student punches in, the punch-in information will be recorded on the corresponding sub-roll-call module, and at the same time the punch-in information will be displayed on the main roll-call module on the podium, so that the teacher can obtain the student's punch-in information. After all students in the same class have completed the punch-in, the punch-in information of each student will be displayed on the main roll-call module.
[0029] The beneficial effects of the present invention are as follows:
[0030] The clock-in information of each student is displayed on the parent roll-call module; if some students fail to clock in, a warning message will appear on the parent clock-in module on the podium, and the student's face and name information will be extracted from the data terminal system to remind the teacher of the student's absence; at the same time, when the teacher asks questions to the students, the teacher can randomly select student information on the parent roll-call module, and when the teacher chooses to ask a question to a certain student, the parent roll-call module will feedback the question command to the child roll-call module being asked, and the child roll-call module will remind; at the same time, the face information of the student being asked is displayed on the parent roll-call module, and the teacher can identify the person being asked based on the face information on the parent roll-call module; and then it can be determined that each student being asked is the corresponding person, avoiding the problem of impersonation by classmates who play well. BRIEF DESCRIPTION OF THE DRAWINGS
[0031] Figure 1 is a flow chart of the method in the present invention;
[0032] Figure 2 It is a structural diagram of the data terminal system in the present invention;
[0033] Figure 3 It is a system structure diagram of the neutron naming module of the present invention;
[0034] Figure 4 It is a schematic diagram of the punching module and the lifting module in the present invention; DETAILED DESCRIPTION
[0035] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.
[0036] Embodiment 1:
[0037] An automatic personnel roll call system, comprising:
[0038] A data terminal system, the data terminal system includes a data storage terminal; used for storing personnel information;
[0039] A sub-roll-call module, wherein the roll-call module includes a roll-call device, the roll-call device is provided with a fingerprint entry unit and a face recognition unit, and the roll-call module is connected to a data terminal system;
[0040] A mother roll-call module, the mother roll-call module includes a block display, the mother roll-call module is connected to a data terminal system, and the data in the data terminal system is shared with the data in the mother roll-call module;
[0041] A timing module, wherein the timing module is connected to the main roll-call module and the sub-roll-call module, and the duration displayed on the sub-roll-call module is the same as that on the main roll-call module; and timing is performed simultaneously;
[0042] A voice input module, which is connected to the mother roll-call module;
[0043] An electrical signal conversion module, wherein the electrical signal conversion module connects the sub-roll calling module with the main roll calling module respectively; and converts the personnel information recorded in the main roll calling module and the sub-roll calling module;
[0044] The sub-roll calling module includes a position locking module, which is used to lock the personnel information in the sub-roll calling module; the locking module is connected to the timing module; when the time in the timing module arrives, the locking module unlocks the personnel information in the sub-roll calling module;
[0045] The locking module further includes an information clearing unit, which is used to clear the personnel information after the locking module is unlocked, and the clearing unit does not clear the data in the data terminal module;
[0046] The working principle is as follows;
[0047] When the roll call system is used; for new students, the counselor or class teacher first leads the students to enter information in the sub-roll call module in the class; the sub-roll call module is a clock-in roll call device set on the class desk; after the student enters the identity information in the sub-roll call module, the sub-roll call module transmits the entered information to the data terminal system, and the terminal system records it according to the school's report, such as how many students are in a class. When the student information of a class is entered, the data terminal system will save the student information of a class as a module for use in clocking in for class roll call, and the data terminal system records the student information; after the student graduates or drops out, the staff will clear the corresponding student information from that data terminal system;
[0048] And by setting a main roll-call module, the main roll-call module is a display terminal set on the podium inside the class; in the actual use of the roll-call system, one main roll-call module and multiple sub-roll-call modules are usually set for one class; and by setting a timing module in both the main roll-call module and the sub-roll-call module; the timing module is a countdown, and the countdown time can be modified accordingly when the teacher is teaching;
[0049] When students are in class, the teacher can first find the class to be taught in the roll call module on the classroom podium, and then call up the personnel information of the corresponding class; the personnel information is displayed on the display on the roll call module;
[0050] After that, after the students enter the class, they sit down at the corresponding desks and then punch in for roll call. Students punch in for roll call on the sub-roll call module. After each student punches in on the sub-roll call module, since the main roll call module and the sub-roll call module are connected via an electrical signal conversion module, the electrical signal conversion module can be one or more of Bluetooth, a connecting line, a cellular network or a wireless network. Therefore, after each student punches in, the punch-in information will be recorded on the corresponding sub-roll call module, and at the same time, the punch-in information will be displayed on the main roll call module on the podium, so that the teacher can obtain the student's punch-in information, including the student's facial information when punching in.
[0051] After all students in the same class have completed the clocking in, the clocking in information of each student will be displayed on the main roll call module; if some students do not clock in, a warning message will appear on the main clocking in module on the podium, and the student's face and name information will be extracted from the data terminal system to remind the teacher of the student's absence; at the same time, when the teacher asks questions to the students; the teacher can randomly select student information on the main roll call module, and when the teacher chooses to ask a question to a certain student, the main roll call module will feedback the question command to the sub-roll call module being asked, and the sub-roll call module will remind; at the same time, the face information of the student being asked will be displayed on the main roll call module, and the teacher can identify the person being asked based on the face information on the main roll call module; and then it can be determined that each student being asked is the corresponding person, avoiding the problem of impersonation by classmates who play well together;
[0052] And by setting a timing module in the main roll-call module and the sub-roll-call module, and setting a position locking module in the main roll-call module and the sub-roll-call module; in the above description, when all students have completed the clocking in, the teacher can set the timing duration on the main roll-call module; and feed back the duration information to each sub-roll-call module, and set a locking module, so that before the end of this duration, the position locking module will lock the student information in the sub-roll-call module; and the position information is displayed on the main roll-call module at the same time. If there are two or three consecutive classes, the personnel information in the sub-roll-call module will not be changed during the break time, and the timing duration in the timing module is also set according to the time of the consecutive classes; if in the case of consecutive classes, after the break time, re-enter the classroom for class, then the teacher can judge according to the information on the main roll-call module that the location shows the clock-in information, but there is no student there, and then the teacher can obtain the situation of students skipping classes;
[0053] In addition, an information cleaning unit is provided inside the position locking module, and the information cleaning unit is connected to the timing module and the position locking module. When the time set by the teacher on the main roll call module ends, the information cleaning unit starts working to clear the punch-in information on the sub-roll call module to avoid the situation that students are unable to punch in when other classes go to the classroom for class, and to avoid the problem of student information leakage in the sub-roll call situation; after the information cleaning unit clears the information on the sub-roll call module, the information on the data terminal system will not change.
[0054] Embodiment 2:
[0055] The sub-roll calling module is provided with a display module, and the display module is connected to the display in the main roll calling module; the display module and the display on the main roll calling module are both provided with a red light alarm unit; when the information displayed on the main roll calling module is different from the information displayed on the sub-roll calling module, the red light alarm unit will sound an alarm;
[0056] The sub-roll calling module and the main roll calling module are also provided with a data recording unit, and the data recording unit is used for the personnel information that has not been unlocked in the locking module;
[0057] The working principle is as follows;
[0058] On the basis of the above embodiment, a display module is provided on the sub-roll-call module, the display module is connected to the display in the main roll-call module, and red light alarm units are provided on the display module and the display on the main roll-call module; when the teacher asks questions to the students, if the personnel information displayed on the main roll-call module is different from the personnel information on the sub-roll-call module, the red light alarm unit will display a red light on the display on the main roll-call module to remind the teacher that the student is not the student being asked the question, so as to avoid the problem of answering under a false name; and at the same time, the red light alarm unit of the display module on the sub-roll-call module displays a red screen to remind the students that the personnel information is asymmetric;
[0059] A data recording unit is set on the sub-roll-call module and the main roll-call module, and the data recording unit is used to record the punch-in information in the sub-roll-call module. The data recording unit is connected to the timing module, so that the data recording unit records the time when the position locking module is unlocked; and the time information is fed back to the data terminal system, so that the teacher can understand the students' attendance and improve the teacher's management efficiency of the students.
[0060] Embodiment three:
[0061] The sub-roll calling module also includes a mobile phone placement unit, which includes a mobile phone placement slot provided on the sub-roll calling module; the mobile phone placement slot has a wireless charging module inside; and the mobile phone placement unit has a self-locking module;
[0062] An electronic component sensing unit is provided inside the mobile phone placement unit, the electronic component sensing unit is connected to the red light alarm unit in the parent roll-call module, and the electronic component sensing unit is connected to the red light alarm unit in the child roll-call unit;
[0063] The working principle is as follows;
[0064] By setting a mobile phone placement unit on the sub-roll-call module, the mobile phone placement unit is a mobile phone placement slot opened on the sub-roll-call module; and a wireless charging module is set inside the mobile phone placement slot. When students are in class, especially in colleges and universities, students need to put their mobile phones in a mobile phone bag specially used for mobile phones. When placing mobile phones in the mobile phone bag, sometimes the mobile phones of two students are similar, and the problem of taking the wrong mobile phone occurs. By setting the mobile phone placement unit on the sub-roll-call module, after the student punches in, the mobile phone can be placed in the mobile phone placement unit. When the mobile phone is placed inside the mobile phone placement unit, the self-locking module is started to lock the mobile phone in the mobile phone placement unit; and at the same time, the wireless charging module inside the mobile phone placement slot can also charge the mobile phone.
[0065] And by setting an electronic component sensing unit in the mobile phone placement unit, the electronic component sensing unit includes an electronic component monitor. When the student places the mobile phone in the mobile phone placement unit, the electronic component sensing unit will monitor the electronic components inside the mobile phone, thereby preventing the student from using the model machine. If the student uses the model machine, the electronic component sensing unit cannot detect the electronic components inside the mobile phone. The electronic component sensing unit is connected to the red light alarm system, so that the alarm information is fed back to the main roll-call module and the sub-roll-call module to remind the students and teachers that the mobile phone needs to be placed. Therefore, the problem of students using the model machine instead of the mobile phone is avoided to a certain extent.
[0066] Embodiment 4:
[0067] The automatic personnel roll-call system also includes a punch-in module, which includes a face recognition module and a fingerprint recognition module, and is provided with a display screen; the punch-in module is connected to a data terminal system, and is connected to a parent roll-call module; the punch-in module is connected to a child roll-call module, and is connected to an electronic original sensing unit;
[0068] The punch card module also includes an automatic lifting module, which is connected to the face recognition module arranged on the punch card module; the lifting module realizes the lifting and lowering of the face recognition module through the electric telescopic device arranged above the lifting module;
[0069] The working principle is as follows;
[0070] On the basis of the above-mentioned embodiment, a punch-in module is also included in the personnel roll-call system. The punch-in module is a punch-in machine arranged at the door of the classroom. The punch-in module includes a face recognition module and a fingerprint recognition module, and a display screen is arranged on the punch-in module; and the punch-in module is connected to the data terminal system. Before the students enter the classroom, they will first punch in on the punch-in module by using face or fingerprint; after the punch-in is completed, the students can enter the classroom; and after the punch-in is completed, the punch-in module is connected to the sub-roll-call module and the main roll-call module; it is connected to the main roll-call module so that the course information, teacher information and duration information are displayed on the display screen of the punch-in module; it is connected to the sub-roll-call module so that after the mobile phone is placed on the mobile phone placement unit, the electronic component sensing module on the mobile phone placement unit will feed back the information to the display screen on the punch-in module; so that during the evening self-study; when the teacher checks the class, he can directly view the information on the punch-in module and obtain the placement of the student's mobile phone; improve the efficiency of the teacher's class check;
[0071] And by setting an automatic lifting module on the clock-in module, the automatic lifting module is connected to the face recognition module on the clock-in module. Since the heights of students in the same class and different classes are different, the automatic lifting module is set on the clock-in module. When students clock in, the automatic lifting module can control the face recognition module to rise and fall; it is used to facilitate students to clock in.
[0072] Embodiment five:
[0073] An automatic personnel roll-call method, the method is applied to the above-mentioned automatic personnel roll-call system, and the method comprises the following steps:
[0074] S1: First, the counselor or class teacher leads the students to enter information in the sub-roll-call module in the class; the sub-roll-call module is a punch-in roll-call device set on the desk in the class; after the students enter their identity information in the sub-roll-call module, the sub-roll-call module transmits the entered information to the data terminal system;
[0075] S2: The terminal system records how many students there are in a class according to the school's report. After the student information of a class is entered, the data terminal system saves the student information of a class as a module. The data terminal system records the student information. When the student graduates or drops out, the staff will clear the corresponding student information from the data terminal system.
[0076] S3: In the actual use of the roll-call system, a main roll-call module and multiple sub-roll-call modules are set for a class; and a timing module is set in both the main roll-call module and the sub-roll-call module; the timing module is a countdown timer, and the countdown time can be modified accordingly when the teacher is teaching;
[0077] S4: The teacher can find the class to be taught in the main roll-call module on the classroom podium, and then call up the personnel information of the corresponding class; the personnel information is displayed on the display on the main roll-call module; then after the students enter the class, they sit down at the corresponding desks, and the students punch in and take roll call on the sub-roll-call module;
[0078] S5: Since the main roll-call module and the sub-roll-call module are connected through the electrical signal conversion module, after each student punches in, the punch-in information will be recorded on the corresponding sub-roll-call module, and at the same time the punch-in information will be displayed on the main roll-call module on the podium, so that the teacher can obtain the student's punch-in information. After all students in the same class have completed the punch-in, the punch-in information of each student will be displayed on the main roll-call module.
Claims
1. An automatic personnel roll call system, characterized in that: include: A data terminal system, the data terminal system includes a data storage terminal; used for storing personnel information; A sub-roll-call module, wherein the roll-call module includes a roll-call device, the roll-call device is provided with a fingerprint entry unit and a face recognition unit, and the roll-call module is connected to a data terminal system; A mother roll-call module, the mother roll-call module includes a block display, the mother roll-call module is connected to a data terminal system, and the data in the data terminal system is shared with the data in the mother roll-call module; A timing module, wherein the timing module is connected to the main roll-call module and the sub-roll-call module, and the duration displayed on the sub-roll-call module is the same as that on the main roll-call module; and timing is performed simultaneously; A voice input module, which is connected to the mother roll-call module; The electric signal conversion module connects the sub-roll calling module with the main roll calling module respectively; and converts the personnel information recorded in the main roll calling module and the sub-roll calling module.
2. The automatic roll-call system according to claim 1, characterized in that: The sub-roll calling module includes a position locking module, which is used to lock the personnel information in the sub-roll calling module; the locking module is connected to the timing module; when the time in the timing module arrives, the locking module unlocks the personnel information in the sub-roll calling module.
3. The automatic roll-call system according to claim 2, characterized in that: The locking module further includes an information clearing unit, which is used to clear the personnel information after the locking module is unlocked. The clearing unit does not clear the data in the data terminal module.
4. The automatic roll-call system according to claim 2, characterized in that: The sub-roll calling module is provided with a display module, and the display module is connected to the display in the main roll calling module; the display module and the display on the main roll calling module are both provided with a red light alarm unit; when the information displayed on the main roll calling module is different from the information displayed on the sub-roll calling module, the red light alarm unit will sound an alarm.
5. The automatic roll-call system according to claim 2, characterized in that: The sub-roll calling module and the main roll calling module are also provided with a data recording unit, and the data recording unit is used for the personnel information that has not been unlocked in the locking module.
6. The automatic roll-call system according to claim 5, characterized in that: The sub-roll calling module also includes a mobile phone placement unit, which includes a mobile phone placement slot opened on the sub-roll calling module; the mobile phone placement slot has a wireless charging module inside.
7. The automatic roll-call system according to claim 6, characterized in that: An electronic component sensing unit is arranged inside the mobile phone placement unit, the electronic component sensing unit is connected to the red light alarm unit in the parent roll-call module, and the electronic component sensing unit is connected to the red light alarm unit in the child roll-call unit.
8. The automatic roll-call system according to claim 1, characterized in that: The automatic personnel roll call system also includes a punch card module, which includes a face recognition module and a fingerprint recognition module, and is provided with a display screen; the punch card module is connected to the data terminal system, and the punch card module is connected to the parent roll call module; the punch card module is connected to the child roll call module, and the punch card module is connected to the electronic original sensing unit.
9. The automatic roll-call system according to claim 8, characterized in that: The punch card module also includes an automatic lifting module, which is connected to the face recognition module arranged on the punch card module; the lifting module enables the face recognition module to be lifted up and down through an electric telescopic device arranged above the lifting module.
10. An automatic roll call method, characterized in that: The method is applied to the automatic personnel roll-call system according to any one of claims 1 to 9, and the method comprises the following steps: S1: First, the counselor or class teacher leads the students to enter information in the sub-roll-call module in the class; the sub-roll-call module is a punch-in roll-call device set on the desk in the class; after the students enter their identity information in the sub-roll-call module, the sub-roll-call module transmits the entered information to the data terminal system; S2: The terminal system records how many students there are in a class according to the school's report. After the student information of a class is entered, the data terminal system saves the student information of a class as a module. The data terminal system records the student information. When the student graduates and drops out, the staff will clear the corresponding student information from the data terminal system. S3: In the actual use of the roll-call system, a main roll-call module and multiple sub-roll-call modules are set for a class; and a timing module is set in both the main roll-call module and the sub-roll-call module; the timing module is a countdown, and the countdown time is modified accordingly when the teacher is teaching; S4: The teacher can find the class to be taught in the main roll-call module on the classroom podium, and then call up the personnel information of the corresponding class; the personnel information is displayed on the display on the main roll-call module; then after the students enter the class, they sit down at the corresponding desks, and the students punch in and take roll call on the sub-roll-call module; S5: Since the main roll-call module and the sub-roll-call module are connected through the electrical signal conversion module, after each student punches in, the punch-in information will be recorded on the corresponding sub-roll-call module, and at the same time the punch-in information will be displayed on the main roll-call module on the podium, so that the teacher can obtain the student's punch-in information. After all students in the same class have completed the punch-in, the punch-in information of each student will be displayed on the main roll-call module.