CN210776860U

CN210776860U - Lock group controller based on NB-IoT

Info

Publication number: CN210776860U
Application number: CN201921776534.8U
Authority: CN
Inventors: 徐济长; 王荣
Original assignee: Shanghai Changyue Communication Co ltd
Current assignee: Shanghai Changyue Communication Co ltd
Priority date: 2019-10-22
Filing date: 2019-10-22
Publication date: 2020-06-16
Anticipated expiration: 2029-10-22

Abstract

The utility model discloses a lock crowd controller based on NB-IoT, including NB-IoT module, high performance lithium cell, steady voltage chip, battery power measuring circuit, bluetooth module, proximity switch, door magnetic sensor, SIM joint interface circuit and spring bolt electromagnetic drive circuit. Aiming at the defects that the existing intelligent lock control network is complex, has low safety and can not be realized in a passive box body, the utility model wirelessly accesses the city central network by NB-IoT technology, does not need to adopt wired relay to carry out multi-layer transmission, adopts a dormancy mode and an awakening mode to work alternately, and can maintain the working life of one to two years by matching with a high-performance lithium battery; the utility model has the functions of unlocking by a mobile phone APP, unlocking by a Bluetooth key, illegal unlocking, automatic alarm and the like, and can distribute different operation authorities to personnel of different levels; the utility model discloses a product simple structure, data transmission are stable quick, low power dissipation, long service life of battery, security are high.

Description

Lock group controller based on NB-IoT

Technical Field

The utility model relates to a thing networked control technical field especially relates to a lock crowd controller based on NB-IoT.

Background

In the present city, trades such as mobile communication, electric power have numerous active box or passive box to distribute in outdoor each position, and the mode that most still adopted the mechanical lock when patrolling and examining or maintaining at ordinary times, the workman need carry big cluster key to go to unblank, not only inefficiency, but also very inconvenient.

At present, some intelligent locks are also adopted in some active boxes, and are communicated with a base station or a maintenance center machine room layer by layer through a network or a serial bus to realize remote unlocking.

SUMMERY OF THE UTILITY MODEL

To complicated, the security of current intelligence lock control network low, and the drawback that can't realize in passive box, the utility model provides a lock crowd controller based on NB-IoT.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a lock group controller based on NB-IoT (Narrow Band Internet of Things) comprises an NB-IoT module, a high-performance lithium battery, a voltage stabilizing chip, a battery electric quantity measuring circuit, a Bluetooth module, a proximity switch, a door magnetic sensor, an SIM card interface circuit and a bolt electromagnetic driving circuit, wherein the high-performance lithium battery is connected with the NB-IoT module through the voltage stabilizing chip and supplies power;

the high-performance lithium battery is also connected with the NB-IoT module through a battery electric quantity measuring circuit, and the electric quantity of the lithium battery is measured and reported;

the NB-IoT module is respectively connected with the door magnetic sensor, the proximity switch and the bolt electromagnetic drive circuit, and is connected with the Bluetooth module and the SIM card interface circuit and is in two-way communication.

Preferably, the model of the NB-IoT module is CN-M50, the model of the high-performance lithium battery is ER34615, the model of the voltage stabilizing chip is NCP161, the battery electric quantity measuring circuit is a parallel resistance voltage dividing circuit, the model of the Bluetooth module is CC2640, the model of the proximity switch is NRS-701, the model of the door sensor is an MC-38 embedded door magnetic switch, the SIM card interface circuit adopts a universal 6PIN self-elastic MICRO SIM card seat (the model is large square SIM-002), and the bolt electromagnetic driving circuit adopts a triode high-current driving circuit.

Preferably, the CN-M50 chip of the NB-IoT module is respectively provided with a pin wire electrically connected to the voltage stabilizing chip, the battery power measuring circuit, the bluetooth module, the proximity switch, the door sensor, the SIM card interface circuit, and the bolt electromagnetic driving circuit.

Preferably, the CN-M50 chip of the NB-IoT module is further connected to an RC filter circuit through a pin line, and the RC filter circuit is electrically connected to an external antenna.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model has wireless access to the city central network by NB-IoT technology, does not need to adopt wired relay to carry out multi-layer transmission, adopts the sleep mode and the wake-up mode to work alternately, and can maintain the working life of one to two years by matching with a high-performance lithium battery; the product possesses functions such as cell-phone APP unblanks, bluetooth key unblanks and illegal automatic alarm of unblanking, can distribute different operation authorities to the personnel of different grades.

The utility model discloses a product simple structure, data transmission are stable quick, low power dissipation, long service life of battery, security are high.

Drawings

Fig. 1 is a block diagram of the circuit structure of the present invention.

FIG. 2 is a circuit schematic diagram of an NB-IoT module and its peripherals;

FIG. 3 is a schematic circuit diagram of a voltage regulator chip;

FIG. 4 is a schematic diagram of a Bluetooth module interface;

FIG. 5 is a schematic diagram of a latch bolt electromagnetic drive circuit;

in the figure: NB-IoT module 1, high performance lithium cell 2, voltage stabilizing chip 3, battery power measuring circuit 4, bluetooth module 5, proximity switch 6, door magnetic sensor 7, SIM card interface circuit 8, spring bolt electromagnetic drive circuit 9.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1, a lock group controller based on NB-IoT comprises an NB-IoT module 1, a high performance lithium battery 2, a voltage stabilization chip 3, a battery power measurement circuit 4, a bluetooth module 5, a proximity switch 6, a door magnetic sensor 7, a SIM card interface circuit 8 and a bolt electromagnetic drive circuit 9, wherein the high performance lithium battery 2 is connected with the NB-IoT module 1 through the voltage stabilization chip 3 and supplies power; the high-performance lithium battery 2 is connected with the NB-IoT module 1 through a battery electric quantity measuring circuit 4, and measures and reports the electric quantity of the lithium battery; the NB-IoT module 1 is respectively connected with the door magnetic sensor 7, the proximity switch 6 and the bolt electromagnetic drive circuit 9, and the NB-IoT module 1 is connected with the Bluetooth module 5 and the SIM card interface circuit 8 and is in two-way communication.

In addition, NB-IoT Module 1 is model number CN-M50, manufactured by Shai electronics; the model of the high-performance lithium battery 2 is ER34615 produced by RAMWAY company, the voltage stabilizing chip 3 is NCP161 produced by ONSEMI company, the model of the Bluetooth module 5 is CC2640 produced by TI company, the proximity switch 6 adopts a proximity switch NRS-701 produced by NEC, the door magnetic sensor 7 adopts an MC-38 normally open embedded door magnetic switch, the battery electric quantity measuring circuit 4 is a parallel resistance voltage dividing circuit, the SIM card interface circuit 8 adopts a universal MicroSIM card seat, and the bolt electromagnetic driving circuit 9 adopts a triode high-current driving circuit.

Referring to fig. 2, a circuit diagram of an NB-IoT module and its peripheral devices is shown. D2 is NB-IoT module 1, supports LTECAT-NB1/NB2, and the platform supports NB-IOT Band 1/2/3/5/8/12/13/17/18/19/20/25/26/28/66/70, and at present, the domestic frequency Band can support Band 1/3/5/8/; the power supplies power to the module through

pins

1 and 2 of D2; the pin 36 of the D2 is connected with an external antenna through an RC filter circuit to complete the wireless communication function of the module.

The R23 and the R24 form a battery capacity measuring circuit 4 through parallel resistor voltage division, and output voltage is sent to a 25 pin of the D2 to finish capacity measurement of the high-performance lithium battery. The XS1 and the

pins

26, 27, 28 and 29 of the D2 form a SIM card interface circuit 8, which is used for completing communication between the SIM card and the NB-IoT module.

Pins 32 and 33 of D2 are connected to bluetooth module 5 for completing bluetooth communication. Pin 47 of D2 is a lock switch control signal, and is connected to the bolt electromagnetic driving circuit 9 for completing unlocking and unlocking.

Pin 30 of D2 is connected to the output signal of proximity switch 6, and pin 17 is connected to the output signal of door sensor 7. When the intelligent wakening device works normally, the current of the NB-IoT module 1 is only 7 muA when the intelligent wakening device sleeps, the wakening modes comprise two types, one is that the lock is pushed manually under normal conditions to enable the proximity switch 6 to be conducted and waken, the other is that the door magnetic sensor 7 gives an alarm, the lock is abnormally opened, and the module can be wakened.

Fig. 3 is a schematic diagram of a voltage regulator chip circuit. D8 is voltage regulation chip 3, and along with the live time of high performance lithium cell 2 increases, its output voltage has weak change, through voltage regulation chip, can be with output voltage stable at 3.3V, has guaranteed the normal operating of equipment.

Referring to fig. 4, a schematic diagram of a bluetooth module interface is shown. The bluetooth module 5 performs bidirectional communication with the NB-IoT module 1 through a serial bus. After the NB-IoT module 1 is awakened, the mobile phone APP can be connected with the background server to communicate with the NB-IoT module 1 to apply for unlocking, and after the Bluetooth key is paired with the Bluetooth module 5, the NB-IoT module 1 confirms the authority of the Bluetooth key through the background server to unlock the mobile phone.

Fig. 5 is a schematic diagram of a driving circuit of the electromagnetic latch. The bolt electromagnetic drive circuit 9 is connected in series through two triodes to form a large-current drive circuit, and the drive current can reach 200 mA. When the NB-IoT module 1 is unlocked, a control signal is output, and the electromagnet is switched on through the bolt electromagnetic driving circuit 9, so that the bolt is sucked, and the unlocking is completed; otherwise, locking is carried out.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A lock group controller based on NB-IoT comprises an NB-IoT module (1), a high-performance lithium battery (2), a voltage stabilizing chip (3), a battery electric quantity measuring circuit (4), a Bluetooth module (5), a proximity switch (6), a door magnetic sensor (7), an SIM card interface circuit (8) and a bolt electromagnetic driving circuit (9), and is characterized in that the high-performance lithium battery (2) is connected with the NB-IoT module (1) through the voltage stabilizing chip (3) and supplies power;

the high-performance lithium battery (2) is also connected with the NB-IoT module (1) through a battery electric quantity measuring circuit (4) to measure and report the electric quantity of the lithium battery;

the NB-IoT module (1) is respectively connected with the door magnetic sensor (7), the proximity switch (6) and the bolt electromagnetic drive circuit (9), and the NB-IoT module (1) is connected with the Bluetooth module (5) and the SIM card interface circuit (8) and is in two-way communication.

2. The lock group controller based on the NB-IoT as claimed in claim 1, wherein the NB-IoT module (1) is CN-M50 in model, the high performance lithium battery (2) is ER34615 in model, the voltage stabilization chip (3) is NCP161 in model, the battery capacity measurement circuit (4) is a parallel resistance voltage division circuit, the Bluetooth module (5) is CC2640 in model, the proximity switch (6) is NRS-701 in model, the door magnetic sensor (7) is an MC-38 embedded door magnetic switch in model, the SIM card interface circuit (8) adopts a universal 6PIN self-eject MICRO SIM card holder with large SIM-002 in model, and the bolt electromagnetic driving circuit (9) adopts a triode high current driving circuit.

3. The NB-IoT based lock group controller according to claim 2, wherein the CN-M50 chip of the NB-IoT module (1) is respectively provided with a pin wire electrically connected to the voltage stabilizing chip (3), the battery power measuring circuit (4), the bluetooth module (5), the proximity switch (6), the door magnetic sensor (7), the SIM card interface circuit (8), and the latch electromagnetic driving circuit (9).

4. The NB-IoT based lock group controller as claimed in claim 2, wherein the CN-M50 chip of the NB-IoT module (1) is further connected with an RC filter circuit through a pin wire, and the RC filter circuit is electrically connected with an external antenna.