CN208433166U - A kind of school bag is listed - Google Patents

Abstract

It is listed that the utility model discloses a kind of school bags, it is characterised in that: including the ontology that is listed, the ontology that is listed is equipped with connector, and connector is connect with school bag；Positioning circuit is provided in the listed ontology；The positioning circuit includes master controller, wireless transport module, locating module and power circuit；The master controller is separately connected wireless transport module and locating module, and the power circuit provides operating voltage；The wireless transport module includes NB-IoT wireless communication module；The locating module includes GPS positioning module.The utility model is actively sent the position that school bag is listed on server by internal positioning device, and user can check listed position by accessing server, to quickly and precisely confirm the position of student, finds student.

Description

A kind of school bag is listed

Technical field

The utility model relates to a kind of students' supplies, especially a kind of school bag is listed.

Background technique

Design has school bag listed on the school bag of present student, and school bag is listed and is generally adopted by card, writes on card The information such as name, school's title, class, telephone number, the home address of student, are convenient to claim the school bag of student, while After student wanders away, other people contact parents of student or send back student according to card image, and student is applicable in very much；But Existing school bag is listed, and there are still following defects: 1, not having positioning function on card, can not confirm the school bag i.e. position of student；2, Parent is unable to positive location to the position of school bag, passively can only contact oneself by other people, for finding student very It is inconvenient.

Utility model content

The goal of the invention of the utility model is: in view of the above problems, providing that a kind of school bag is listed, and school bag is listed It is equipped with positioning function, server can be sent in time by the position of school bag, the location information of school bag is checked by server, Especially parent or teacher can actively check the position of student, to guarantee the safety of student, prevent student from going astray from the group.

The technical solution adopted in the utility model is as follows:

A kind of school bag of the utility model is listed, including listed ontology, and the ontology that is listed is equipped with connector, connector and school bag Connection；Positioning circuit is provided in the listed ontology；The positioning circuit includes master controller, wireless transport module, positioning Module and power circuit；The master controller is separately connected wireless transport module and locating module, and the power circuit provides work Make voltage；The wireless transport module includes NB-IoT wireless communication module；The locating module includes GPS positioning module.

The above structure, listed ontology are connect by connector with school bag, are obtained by the locating module in being listed listed Position, and master controller is sent by listed location information, master controller passes through NB-IoT wireless communication module for position again Information is sent on server, and user can obtain listed position, by access server so as to check the position of student It sets；The listed active of student sends location information, and parent can in time and easily check the position of student, prevents student from sending out Outside business, it is quickly found out student.

Preferably, the listed ontology is equipped with through-hole, it is installed with connector in through-hole, connector is connect with school bag, even Fitting listed will be connected with school bag.

Preferably, the NB-IoT wireless communication module includes radio communication mold group, user identification module, ESD Protect circuit and voltage regulator circuit U3；The radio communication mold group includes BC95 mould group；The user identification module includes SIM Card；The BC95 mould group includes BC95 chip, and the ANT pin of BC95 chip connects antenna socket；The BC95 chip and SIM card Connection；Esd protection circuit is connected between BC95 chip and SIM card；The voltage regulator circuit U3 includes linear voltage regulator, pressure stabilizing electricity The input terminal of road U3 connects capacitor C4, C4 connection anode B+, and output end connects capacitor C5, output voltage VCC.

Preferably, the GPS positioning module includes GPS L70-RL and GPS circuitry；The GPS L70-RL and master control Device connection processed, the both ends ANT pin series resistor R7, R7 are parallel with capacitor C11 and C12, and the one end R7 connects antenna；The GPS electricity Road includes metal-oxide-semiconductor field effect transistor, and capacitor C15 is parallel on metal-oxide-semiconductor field effect transistor, and voltage, the connection of the pole D are accessed in the pole S of metal-oxide-semiconductor field effect transistor Resistance R14, R14 series LED 3, LED3 concatenate R9, and R9 is separately connected the pole R10 and G, R10 connection master controller.

Preferably, the master controller includes single-chip microcontroller and peripheral circuit；The single-chip microcontroller uses STM32F103T8U6；The peripheral circuit includes crystal oscillating circuit, download interface and USB interface.

Preferably, the crystal oscillating circuit includes external crystal-controlled oscillation XTAL1 and trimming capacitor C 13 and C14, C13 and C14 difference It is connected to the both ends XTAL1；The download interface P1 includes SWCLK pin and SWD pin；The USB interface includes micro USB Connector.

Preferably, the power circuit includes battery protecting circuit, charging circuit and voltage regulator circuit U5；The pressure stabilizing electricity Road U5 includes linear voltage regulator, and the input terminal of voltage regulator circuit connects capacitor C16, and output end connects capacitor C17；The battery protection Circuit includes lithium battery control chip DW01 and double MOS switch pipes；Double MOS switch pipes include control of discharge MOS switch pipe With charge control MOS switch pipe；The positive supply input terminal VDD connection resistance R11, positive supply input terminal VDD of the DW01 and negative Capacitor C19 is connected between power input VSS；Discharge prevention actuating station OD is extremely connected with the G of control of discharge MOS switch pipe； Charge protection actuating station OC is extremely connected with the G of charge control MOS switch pipe；Overcurrent/short-circuit detecting end CSI connection resistance R12；Institute It states R11 and is also connected with charging circuit.

Preferably, the charging circuit includes lithium-ion battery charger, lithium-ion battery charger includes what open-drain exported Charged state indication end CHRG, battery charging complete indication end STDBY, charging current output end BAT, charging current setting and prison Control and shutdown pin PROG, positive input supply voltage pin VCC；Resistance R13 is connected between PROG pin and ground；BAT draws Capacitor C20 is connected between foot and ground.

In conclusion by adopting the above-described technical solution, the beneficial effects of the utility model are: with prior art phase Than the school bag of the utility model is listed, and used communication module power consumption is low, is able to carry out charging, long service life, while institute The locating module positioning accuracy of use is high, is not only able to achieve indoor positioning, but also be able to achieve outdoor positioning；And school bag is listed to be led Dynamic to send the position of school bag on server, user conveniently checks, the safety of the raising student of high degree.

Detailed description of the invention

Fig. 1 a is the listed structural schematic diagram of one school bag of embodiment.

Fig. 1 b is the listed structural schematic diagram of two school bag of embodiment.

Fig. 2 is the circuit diagram of wireless transport module.

Fig. 3 is the circuit diagram of master controller.

Fig. 4 is the circuit diagram of locating module.

Fig. 5 is the circuit diagram of power circuit.

Specific embodiment

With reference to the accompanying drawing, the utility model is described in detail.

In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only to explain this Utility model is not used to limit the utility model.

A kind of school bag of the utility model is listed, including listed ontology 1, and the ontology 1 that is listed is equipped with connector, connector and book Packet connection；Positioning circuit 2 is provided in the listed ontology 1；The positioning circuit 2 include master controller, wireless transport module, Locating module and power circuit；The master controller is separately connected wireless transport module and locating module, and the power circuit mentions For operating voltage；The wireless transport module includes NB-IoT wireless communication module；The locating module includes GPS positioning mould Block.

Embodiment one:

As shown in Figure 1a, the ontology 1 that is listed is equipped with slotted hole 3, and lantern ring 4 is installed in slotted hole 3, and lantern ring 4 is equipped with activity Buckle 5, when use, open movable buckle 5, then the through-hole being each passed through on slotted hole 3 and school bag is detained movable buckle 5 Tightly, thus by hanging on school bag.

Embodiment two:

As shown in Figure 1 b, the ontology 1 that is listed is fixed with 6 one end of connection strap, and 6 other end of connection strap is equipped with button 7, uses When, button 7 is fastened, connection strap 6 is fixed on school bag, to connect school bag and be listed.

Embodiment three:

As shown in Fig. 2, the NB-IoT wireless communication module include radio communication mold group, user identification module, Esd protection circuit and voltage regulator circuit U3；The radio communication mold group includes BC95 mould group；The user identification module includes SIM card；The BC95 mould group includes BC95 chip, and the ANT pin of BC95 chip connects IPEX antenna socket；The BC95 chip It is connected with the contact of SIM card；Esd protection circuit is connected between BC95 chip and SIM card；The voltage regulator circuit U3 includes linear Voltage-stablizer, the input terminal of voltage regulator circuit U3 connect capacitor C4, C4 connection anode B+, and output end connects capacitor C5, output electricity Press VCC；Esd protection circuit uses diode SMF05C.

As shown in figure 3, the master controller includes single-chip microcontroller and peripheral circuit；The peripheral circuit include crystal oscillating circuit, Download interface and USB interface；The crystal oscillating circuit includes external crystal-controlled oscillation XTAL1 and trimming capacitor C 13 and C14, C13 and C14 points It is not connected to the both ends XTAL1；The crystal oscillating circuit is the start-oscillation circuit of single-chip microcontroller；

The download interface P1 includes SWCLK pin and SWD pin；The USB interface includes micro USB connector.

As shown in figure 4, the GPS positioning module includes GPS L70-RL and GPS circuitry；The transmission of the GPS L70-RL TX pin and RX pin are connect with single-chip microcontroller, and the both ends ANT pin series resistor R7, R7 are parallel with capacitor C11 and C12, the one end R7 Connect antenna 1575R-A；Antenna receives satellite-signal, sends signal to after removing dryness GPS L70-RL and handles, obtains To GPS position information；

The GPS circuitry includes metal-oxide-semiconductor field effect transistor, and capacitor C15, the S of metal-oxide-semiconductor field effect transistor are parallel on metal-oxide-semiconductor field effect transistor Voltage is accessed in pole, and the pole D connects resistance R14, R14 series LED 3, and LED3 concatenates R9, and R9 is separately connected the pole R10 and G, and R10 connection is single Piece machine；Single-chip microcontroller output control signal GPS EN, by GPS circuitry, metal-oxide-semiconductor field effect transistor Q1 conducting is provided to GPS L70-RL Voltage, GPS L70-RL start to work；When Q1 is connected, LED3 electrified light emitting shows the working condition of GPS positioning module.

As shown in figure 5, the power circuit includes battery protecting circuit, charging circuit and voltage regulator circuit U5；The pressure stabilizing Circuit U 5 includes linear voltage regulator LDO3.3, and the input terminal of voltage regulator circuit U5 connects capacitor C16, and output end connects capacitor C17；It is defeated Enter end and be also connected with anode B+, battery is to linear voltage regulator input voltage, and by conversion, output end exports 3.3V pressure stabilizing electricity Pressure.

The battery protecting circuit includes lithium battery control chip DW01+, double MOS switch pipe FS8205A；The DW01+ Positive supply input terminal VDD connection resistance R11, positive supply input terminal VDD and negative supply input terminal VSS between be connected with capacitor C19；Discharge prevention actuating station OD is extremely connected with the G of control of discharge MOS switch pipe；Charge protection actuating station OC and charge control The G of MOS switch pipe is extremely connected；Overcurrent/short-circuit detecting end CSI connection resistance R12；Double MOS switch pipes include control of discharge MOS switch pipe and charge control MOS switch pipe；Overcurrent/short-circuit detecting end CSI connection resistance R12；The R11 is also connected with charging Circuit；

When charging, the B+ and B- of charger output voltage to battery control MOS to ground connection by charge and discharge；It is charging In, the voltage of battery is detected by resistance R11；When cell voltage is more than overcharged voltage, charge protection actuating station OC output signal Turn off charge control MOS switch pipe, battery stops charging, to prevent over-charging of battery；In electric discharge, when R11 detects battery Voltage is lower than discharge voltage, and discharge prevention actuating station OD output signal turns off control of discharge MOS, and battery stops electric discharge, prevents Battery is damaged because of over-discharge；Electric current is detected at the end CSI, and when output short-circuit, the conduction voltage drop that charge and discharge control MOS increases severely, CSI End voltage increases rapidly, and DW01 output signal turns off charge and discharge control MOS rapidly, realizes overcurrent or short-circuit protection.

The charging circuit includes lithium-ion battery charger TP4057, and the pin of TP4057: the output of CHRG open-drain is filled Electricity condition indication end, STDBY battery charging complete indication end, BAT charging current output end, the setting of PROG charging current, charging Current monitoring and shutdown pin；VCC positive input supply voltage pin；Resistance R13 is connected between PROG pin and ground；BAT draws Capacitor C20 is connected between foot and ground.

When charger is in charged state, CHRG is pulled to low level, and in other states, CHRG is in high-impedance state；When When battery is not connected to charger, the expression of CHRG output pulse signal is fitted without battery；When outside battery terminal connections BAT pin It connects when capacitor is 10uF CHRG flicker cycle about 0.5-2 seconds；

Charging current is set by the way that resistance R13 is arranged between PROG pin and ground；Capacitor C20 is filter condenser, C20 and R13 forms RC filter, connects RC filter on PROG pin to measure average battery current.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model Protection scope within.

Claims (8)

1. a kind of school bag is listed, it is characterised in that: including the ontology that is listed, the ontology that is listed is equipped with connector, connector and school bag Connection；Positioning circuit is provided in the listed ontology；The positioning circuit includes master controller, wireless transport module, positioning Module and power circuit；The master controller is separately connected wireless transport module and locating module, and the power circuit provides work Make voltage；The wireless transport module includes NB-IoT wireless communication module；The locating module includes GPS positioning module.

2. school bag as described in claim 1 is listed, it is characterised in that: the listed ontology is equipped with through-hole, is installed in through-hole Connector, connector are connect with school bag, and connector listed will be connected with school bag.

3. school bag as described in claim 1 is listed, it is characterised in that: the NB-IoT wireless communication module includes channel radio Believe mould group, user identification module, esd protection circuit and voltage regulator circuit U3；The radio communication mold group includes BC95 mould group； The user identification module includes SIM card；The BC95 mould group includes BC95 chip, the ANT pin connection of BC95 chip Antenna socket；The BC95 chip is connected with SIM card；Esd protection circuit is connected between BC95 chip and SIM card；It is described steady Volt circuit U3 includes linear voltage regulator, and the input terminal of voltage regulator circuit U3 connects capacitor C4, C4 connection anode B+, and output end connects Meet capacitor C5, output voltage VCC.

4. school bag as described in claim 1 is listed, it is characterised in that: the GPS positioning module includes GPS L70-RL and GPS Circuit；The GPS L70-RL is connect with master controller, and the both ends ANT pin series resistor R7, R7 are parallel with capacitor C11 and C12, The one end R7 connects antenna；The GPS circuitry includes metal-oxide-semiconductor field effect transistor, and capacitor C15, MOS effects are parallel on metal-oxide-semiconductor field effect transistor Should the pole S of pipe access voltage, the pole D connects resistance R14, R14 series LED 3, and LED3 concatenates R9, and R9 is separately connected the pole R10 and G, R10 connection master controller.

5. school bag as described in claim 1 is listed, it is characterised in that: the master controller includes single-chip microcontroller and peripheral circuit； The peripheral circuit includes crystal oscillating circuit, download interface and USB interface.

6. school bag as claimed in claim 5 is listed, it is characterised in that: the crystal oscillating circuit includes external crystal-controlled oscillation XTAL1 and micro- Capacitor C13 and C14 are adjusted, C13 and C14 are connected to the both ends XTAL1；The download interface P1 includes that SWCLK pin and SWD draw Foot；The USB interface includes micro USB connector.

7. school bag as described in claim 1 is listed, it is characterised in that: the power circuit includes battery protecting circuit, charging Circuit and voltage regulator circuit U5；The voltage regulator circuit U5 includes linear voltage regulator, and the input terminal of voltage regulator circuit connects capacitor C16, defeated Outlet connects capacitor C17；The battery protecting circuit includes lithium battery control chip DW01 and double MOS switch pipes；Double MOS Switching tube includes control of discharge MOS switch pipe and charge control MOS switch pipe；The positive supply input terminal VDD connection of the DW01 Capacitor C19 is connected between resistance R11, positive supply input terminal VDD and negative supply input terminal VSS；Discharge prevention actuating station OD with The G of control of discharge MOS switch pipe is extremely connected；Charge protection actuating station OC is extremely connected with the G of charge control MOS switch pipe；Overcurrent/ Short-circuit detecting end CSI connection resistance R12；The R11 is also connected with charging circuit.

8. school bag as claimed in claim 7 is listed, it is characterised in that: the charging circuit includes lithium-ion battery charger, lithium from Sub- charger includes the charged state indication end CHRG of open-drain output, battery charging complete indication end STDBY, charging current Output end BAT, charging current setting and monitoring and shutdown pin PROG, positive input supply voltage pin VCC；PROG pin with Resistance R13 is connected between ground；Capacitor C20 is connected between BAT pin and ground.