CN208000611U - Schoolyard work attendance management system - Google Patents
Schoolyard work attendance management system Download PDFInfo
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- CN208000611U CN208000611U CN201820286389.4U CN201820286389U CN208000611U CN 208000611 U CN208000611 U CN 208000611U CN 201820286389 U CN201820286389 U CN 201820286389U CN 208000611 U CN208000611 U CN 208000611U
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Abstract
The utility model discloses a kind of Schoolyard work attendance management systems, the intelligent student's identity card that is carried including student, monitor positioned at school indoor server, supervisor mobile terminal and monitor terminal, intelligent student's identity card includes microcontroller, locating module, wireless communication module, buzzer, clock module, display screen and power supply module;Power supply module includes input power, the first triode, the first metal-oxide-semiconductor, the first diode, the second zener diode, third diode and the first capacitance, one end of input power is connect with the anode of one end of the first capacitance, the anode of the first diode, the cathode of the second zener diode and third diode respectively, the other end of first capacitance and the other end of input power connect, the cathode of first diode is connect with the drain electrode of the first metal-oxide-semiconductor, and the anode of the second zener diode is connect with the base stage of the first triode.The utility model circuit structure is relatively simple, hardware cost is relatively low, the safety and reliability of circuit is higher.
Description
Technical field
The utility model is related to campus field of attendance, more particularly to a kind of Schoolyard work attendance management system.
Background technology
It deepens continuously and the constantly improve of management work and optimization with information-based, using science easily manager
Method and system can effectively improve management quality and efficiency.Campus attendance checking system be one integrate management and safely
System, can not only be for statistical analysis to worker's attendance in the daily management mission of campus, generates tables of data for relevant people
Member uses, moreover it is possible to play a role to the safety in campus, be needed after campus attendance checking system is verified when user enters
After success, can just it enter.Circuit part in traditional campus attendance checking system is complicated, and hardware cost is higher.In addition, by
Lack corresponding circuit protection measure in traditional campus attendance checking system, causes the safety and reliability of circuit not high.
Utility model content
The technical problem to be solved by the present invention is to for the drawbacks described above of the prior art, provide a kind of circuit knot
Structure is relatively simple, hardware cost is relatively low, the higher Schoolyard work attendance management system of the safety and reliability of circuit.
Technical solution adopted by the utility model to solve its technical problems is:A kind of Schoolyard work attendance management system is constructed,
The intelligent student's identity card that is carried including student monitors positioned at school indoor server, the mobile terminal of supervisor and monitoring eventually
End, the intelligence student's identity card includes microcontroller, locating module, wireless communication module, buzzer, clock module, display screen and confession
Electric module, the microcontroller are communicated with the locating module and wireless communication module respectively by RS485 interfaces, the list
Piece machine is communicated by the wireless communication module with the server, the I/O interfaces of the buzzer and the microcontroller
Connection, the clock module are connect by RS232 interface with the microcontroller, and the display screen passes through conducting wire and the clock mould
Block connection, for showing that time, the power supply module connect with the microcontroller, for powering, the mobile terminal with it is described
Server connects, and the monitor terminal connect with the server, the location information for showing student;
The power supply module includes input power, the first triode, the first metal-oxide-semiconductor, the first diode, two pole of the second voltage stabilizing
Pipe, third diode and the first capacitance, one end of the input power respectively with one end of first capacitance, the first diode
Anode, the second zener diode cathode connected with the anode of third diode, the other end of first capacitance with it is described
The other end of input power connects, and the cathode of first diode is connect with the drain electrode of first metal-oxide-semiconductor, and described second is steady
The anode of pressure diode is connect with the base stage of first triode, and the cathode of the third diode is respectively with the described 1st
The grid of the collector of pole pipe and the first metal-oxide-semiconductor connects, the emitter of first triode and the source electrode of the first metal-oxide-semiconductor with
The other end of first capacitance connects, the model S-153T of the third diode.
In Schoolyard work attendance management system described in the utility model, the power supply module further includes the second capacitance, described
One end of second capacitance is connect with the grid of first metal-oxide-semiconductor, the other end of second capacitance and first triode
Collector connection, the capacitance of second capacitance is 460pF.
In Schoolyard work attendance management system described in the utility model, the power supply module further includes first resistor, described
One end of first resistor is connect with the emitter of first triode, the other end of the first resistor and first capacitance
Other end connection, the resistance value of the first resistor is 18k Ω.
In Schoolyard work attendance management system described in the utility model, the power supply module further includes second resistance, described
One end of second resistance is connect with the source electrode of first metal-oxide-semiconductor, the other end of the second resistance and the first resistor
The other end connects, and the resistance value of the second resistance is 26k Ω.
In Schoolyard work attendance management system described in the utility model, first triode is NPN type triode, described
First metal-oxide-semiconductor is N-channel MOS pipe.
In Schoolyard work attendance management system described in the utility model, the wireless communication module is bluetooth module, WIFI
Module, gsm module, GPRS module, CDMA module, WCDMA modules, CDMA2000 modules, TD-SCDMA modules, Zigbee moulds
Block or LoRa modules.
The Schoolyard work attendance management system for implementing the utility model, has the advantages that:Since power supply module includes defeated
Enter power supply, the first triode, the first metal-oxide-semiconductor, the first diode, the second zener diode, third diode and the first capacitance, it should
Power pack of the power supply module relative to traditional campus attendance checking system, the component used is less, can reduce so hard
Part cost, in addition, third diode is used to carry out current-limiting protection to the grid current of the first MOS pipes, therefore circuit structure is more
Simply, hardware cost is relatively low, circuit safety and reliability is higher.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, other drawings may also be obtained based on these drawings.
Fig. 1 is the structural schematic diagram in the utility model Schoolyard work attendance management system one embodiment;
Fig. 2 is the circuit diagram of power supply module in the embodiment.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
In the utility model Schoolyard work attendance management system embodiment, the structural schematic diagram of the Schoolyard work attendance management system is such as
Shown in Fig. 1.In Fig. 1, the Schoolyard work attendance management system include student carry intelligent student's identity card 1, be located at school monitor it is indoor
Server 2, the mobile terminal 3 of supervisor and monitor terminal 4, wherein intelligent student's identity card 1 includes microcontroller 11, locating module
12, wireless communication module 13, buzzer 14, clock module 15, display screen 16 and power supply module 17, microcontroller 11 pass through RS485
Interface is communicated with locating module 12 and wireless communication module 13 respectively, microcontroller 11 by radio communication module 13 with clothes
Business device 2 is communicated, and buzzer 14 is connect with the I/O interfaces of microcontroller 11, when student carries the intelligent entrance of student's identity card 1 or leaves
Register geographic area when, give notice and alert by buzzer 14.Clock module 15 passes through RS232 interfaces and microcontroller 11
Connection, display screen 16 connect by conducting wire with clock module 15, for showing the time, power supply module 17 connect with microcontroller 11,
For powering, mobile terminal 3 is connect with server 2, and server 2 is in the form of mobile network and the mobile terminal of supervisor 3
It is communicated, server 2 stores the daily attendance data of each student and pushes checking-in result to the mobile terminal 3 of supervisor.
Monitor terminal 4 connect with server 2, the location information for showing student.
Locating module 12 is by positioning acquisition data, as intelligent 1 starting up of student's identity card, wireless communication module 13 and clothes
Business device 2 establishes communication, bounds data is positioned in automatic download server 2, and positioning bounds data are sent to list
Piece machine 11, and microcontroller 11 is communicated with locating module 12, periodically acquires the current location data of student, and signed
Judge inside and outside to bounds, then will determine that result is compared with last state, if the inside and outside state hair in the boundary of the student
It changes and changes, then communicated by the network request with server 2 of the module 13 by radio communication of microcontroller 11, new data is uploaded
To server 2, and control signal is sent out by microcontroller 11, buzzer 14 connected to it is driven to give notice or alert.
If the student for holding intelligent student's identity card 1 is in the intermediate region for bounds of registering, do not register at this time, sign-out place
Reason.Monitor terminal 4 is for showing the location information for leaving the region student that registers, and under some bursty states, server 2 is with wireless
The mode of communication is communicated with wireless communication module 13, and wireless communication module 13 with microcontroller 11 by being communicated, microcontroller 11
By the data transmission of locating module 12 to wireless communication module 13, and then server 2 obtains the position of student from locating module 12
Information, and shown on monitor terminal 4, student is found as early as possible, prevents the unexpected of student's lost contact from occurring.Server 2 is receiving
After attendance data, keeps a record in the database simultaneously while the mobile terminal 3 to supervisor by the way of message push is sent
Attendance short message.
It is noted that in the present embodiment, the wireless communication module 13 be bluetooth module, WIFI module, gsm module,
GPRS module, CDMA module, WCDMA modules, CDMA2000 modules, TD-SCDMA modules, Zigbee module or LoRa modules
Deng.By the way that various wireless communication mode is arranged, the flexibility of communication can be increased, meet different user and the need without occasion
It asks, when in particular by LoRa modules, farther out, and communication performance is relatively stable for communication distance, suitable for being wanted to communication quality
Seek higher occasion.
Fig. 2 is the circuit diagram of power supply module in the present embodiment, in Fig. 2, the power supply module 17 include input power Ui,
First triode Q1, the first metal-oxide-semiconductor M1, the first diode D1, the second zener diode D2, third diode D3 and the first capacitance
One end of C1, input power Ui respectively with one end of the first capacitance C1, the anode of the first diode D1, the second zener diode
The cathode of D2 is connected with the anode of third diode D3, and the other end of the first capacitance C1 is connect with the other end of input power Ui,
The cathode of first diode D1 is connect with the drain electrode of the first metal-oxide-semiconductor M1, the anode and the first triode of the second zener diode D2
The base stage of Q1 connects, the cathode of the third diode D3 grid with the collector of the first triode Q1 and the first metal-oxide-semiconductor M1 respectively
The source electrode of connection, the emitter of the first triode Q1 and the first metal-oxide-semiconductor M1 are connect with the other end of the first capacitance C1.
Power pack of the power supply module 17 relative to traditional campus attendance checking system, the component used is less, electricity
Line structure is relatively simple, can reduce hardware cost in this way.Third diode D3 is Current Limiting Diodes, for the first metal-oxide-semiconductor
The grid current of M1 carries out current-limiting protection, therefore the safety and reliability of circuit is higher.It is noted that the present embodiment
In, the model S-153T of third diode D3, certainly, in practical applications, third diode D3 can also use its alloytype
Number with similar functions diode.
In the present embodiment, input power Ui makes the moment of the first metal-oxide-semiconductor M1 conductings, the first capacitance C1 short circuits make the one or three
Pole pipe Q1 keeps cut-off state, the conducting without influencing the first metal-oxide-semiconductor M1.When the first metal-oxide-semiconductor M is in normally state,
The charging voltage value of first capacitance C1 will not make the first triode Q1 conductings, and the drain-source voltage of the first metal-oxide-semiconductor M1 is low electricity
Flat, by the second zener diode D2 by A point current potential clamper low-potential states, then the first capacitance C1 stoppings are charged, at this time A
Point undertension does not interfere with the working condition of the first metal-oxide-semiconductor M1 to generate biasing to the first metal-oxide-semiconductor M1.
When the first metal-oxide-semiconductor M1 overcurrents, the voltage between drain electrode and source electrode rises rapidly, and the second zener diode D2 is anti-
To cut-off, the charging potential of the first capacitance C1 increases, until the second zener diode D2 reverse-conductings, the first triode at this time
Q1 will be switched on, and the grid potential of the first metal-oxide-semiconductor M1 is pulled down to close to 0V, is cut to make the first metal-oxide-semiconductor M1 reliable turn-offs
Only, overcurrent is effectively limited.After overcurrent is eliminated, the first capacitance C1 can pass through third diode D2 and the first triode Q1
Electric discharge, until the first triode Q1 shutdowns, circuit automatically restore to working condition.
It is noted that in the present embodiment, the first triode Q1 is NPN type triode, and the first MOS pipes M1 is N-channel
Metal-oxide-semiconductor.Certainly, in practical applications, the first triode Q1 may be PNP type triodes, and the first metal-oxide-semiconductor M1 may be P
Channel MOS tube, but at this moment the structure of circuit also will accordingly change.
In the present embodiment, which further includes the second capacitance C2, one end of the second capacitance C2 and the first metal-oxide-semiconductor M1
Grid connection, the other end of the second capacitance C2 connect with the collector of the first triode Q1.Second capacitance C2 is coupled capacitor,
For preventing the branch between the first metal-oxide-semiconductor M1 and the first triode Q1 from carrying out current-limiting protection, to further enhance the peace of circuit
Full property and reliability.It is noted that in the present embodiment, the capacitance of the second capacitance C2 is that 460pF is actually being answered certainly
In, the capacitance of the second capacitance C2 can adjust accordingly as the case may be.
In the present embodiment, which further includes first resistor R1, one end of first resistor R1 and the first triode
The emitter of Q1 connects, and the other end of first resistor R1 is connect with the other end of the first capacitance C1.First resistor R1 is limited galvanic electricity
Resistance, for carrying out current-limiting protection to the emitter current limliting of the first triode Q1, with further enhance circuit safety and can
By property.It is noted that in the present embodiment, the resistance value of first resistor R1 is 18k Ω, certainly, in practical applications, the first electricity
The resistance value of resistance R1 can adjust accordingly as the case may be.
In the present embodiment, which further includes second resistance R2, one end of second resistance R2 and the first metal-oxide-semiconductor M1
Source electrode connection, the other end of second resistance R2 connect with the other end of first resistor R1.Second resistance R2 is Current Limiting Diodes,
Current-limiting protection is carried out for the source current to the first metal-oxide-semiconductor M1, so that the safety and reliability of circuit obtains further
It improves.It is noted that in the present embodiment, the resistance value of second resistance R2 is 26k Ω, certainly, in practical applications, the second electricity
The resistance value of resistance R2 can adjust accordingly as the case may be.
In short, in the present embodiment, power pack of the power supply module 17 relative to traditional campus attendance checking system uses
Component it is less, circuit structure is relatively simple, can reduce hardware cost in this way.In addition, being equipped with limit in the power supply module 17
Diode is flowed, therefore the safety and reliability of circuit is higher.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection domain within.
Claims (6)
1. a kind of Schoolyard work attendance management system, which is characterized in that including student carry intelligent student's identity card, be located at school's monitoring room
The mobile terminal and monitor terminal of interior server, supervisor, the intelligence student's identity card includes microcontroller, locating module, nothing
Line communication module, buzzer, clock module, display screen and power supply module, the microcontroller by RS485 interfaces respectively with it is described
Locating module and wireless communication module are communicated, and the microcontroller is carried out by the wireless communication module and the server
Communication, the buzzer are connect with the I/O interfaces of the microcontroller, and the clock module passes through RS232 interface and the monolithic
Machine connects, and the display screen is connect by conducting wire with the clock module, for showing time, the power supply module and the list
The connection of piece machine, for powering, the mobile terminal is connect with the server, the monitor terminal connect with the server,
Location information for showing student;
The power supply module include input power, the first triode, the first metal-oxide-semiconductor, the first diode, the second zener diode,
Third diode and the first capacitance, one end of the input power respectively with one end of first capacitance, the first diode
Anode, the second zener diode cathode connected with the anode of third diode, the other end of first capacitance with it is described defeated
Enter the other end connection of power supply, the cathode of first diode is connect with the drain electrode of first metal-oxide-semiconductor, second voltage stabilizing
The anode of diode is connect with the base stage of first triode, the cathode of the third diode respectively with the one or three pole
The grid of the collector of pipe and the first metal-oxide-semiconductor connects, and the emitter of first triode and the source electrode of the first metal-oxide-semiconductor are and institute
State the other end connection of the first capacitance, the model S-153T of the third diode.
2. Schoolyard work attendance management system according to claim 1, which is characterized in that the power supply module further includes the second electricity
Hold, one end of second capacitance is connect with the grid of first metal-oxide-semiconductor, the other end of second capacitance and described first
The collector of triode connects, and the capacitance of second capacitance is 460pF.
3. Schoolyard work attendance management system according to claim 2, which is characterized in that the power supply module further includes the first electricity
Resistance, one end of the first resistor connect with the emitter of first triode, the other end of the first resistor with it is described
The other end of first capacitance connects, and the resistance value of the first resistor is 18k Ω.
4. Schoolyard work attendance management system according to claim 3, which is characterized in that the power supply module further includes the second electricity
Resistance, one end of the second resistance are connect with the source electrode of first metal-oxide-semiconductor, the other end of the second resistance and described first
The other end of resistance connects, and the resistance value of the second resistance is 26k Ω.
5. Schoolyard work attendance management system according to any one of claims 1 to 4, which is characterized in that the one or three pole
Pipe is NPN type triode, and first metal-oxide-semiconductor is N-channel MOS pipe.
6. Schoolyard work attendance management system according to any one of claims 1 to 4, which is characterized in that the wireless communication
Module is bluetooth module, WIFI module, gsm module, GPRS module, CDMA module, WCDMA modules, CDMA2000 modules, TD-
SCDMA modules, Zigbee module or LoRa modules.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820286389.4U CN208000611U (en) | 2018-02-28 | 2018-02-28 | Schoolyard work attendance management system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820286389.4U CN208000611U (en) | 2018-02-28 | 2018-02-28 | Schoolyard work attendance management system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208000611U true CN208000611U (en) | 2018-10-23 |
Family
ID=63838008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820286389.4U Expired - Fee Related CN208000611U (en) | 2018-02-28 | 2018-02-28 | Schoolyard work attendance management system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208000611U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109461239A (en) * | 2018-11-05 | 2019-03-12 | 安徽奕甲文化传媒有限责任公司 | Intelligent exhibition system |
-
2018
- 2018-02-28 CN CN201820286389.4U patent/CN208000611U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109461239A (en) * | 2018-11-05 | 2019-03-12 | 安徽奕甲文化传媒有限责任公司 | Intelligent exhibition system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181023 Termination date: 20210228 |
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| CF01 | Termination of patent right due to non-payment of annual fee |