CN206021402U - A kind of off-line cipher lock control device of low-power consumption - Google Patents

Abstract

A kind of off-line cipher lock control device of low-power consumption includes that CC2640 minimum systems and VDDR voltage supply circuits, double antenna and filter circuit, keystroke interface circuit, circuit for controlling motor, motor rotation-blocking detection circuit, 2 line cJTAG connection circuits, MiniUSB interface circuits, external connection battery turn 3.3V circuits, USB5V and turn 3.3V circuits, standby battery circuit and power module.This device is powered on antitheft door of house and using battery.The device acquiescence is placed in sleep state by this utility model, and by judging in induced key module whether the level of IRQ interrupt lines and bluetooth are initiated connection determining whether to produce wake-up signal, mobile phone terminal Bluetooth transmission and key number are transmitted two kinds of signals and is set to interrupt source, be operated with corresponding module in Rouser.This device reduces the power consumption of control device so that off-line cipher lock control device permanently effective can run while coded lock work efficiency is ensured.

Description

A kind of off-line cipher lock control device of low-power consumption

Technical field

This utility model is related to a kind of low-power consumption off-line cipher lock control device, more particularly to one kind by bluetooth or is pressed Key wakes up the control device of coded lock, belongs to observing and controlling and technical field of automation.

Background technology

External real estate intermediary has been developed the history of last 100 yearses, no matter dealing storage or increment real estate are nearly all It is to be traded by intermediary, all information of buying house all are transmitted by broker association.If developer oneself is not broker, Also want managing operator intermediary to handle, and oneself Development and Production with single-hearted devotion.For real estate presell, then must pass through Broker handles, and in the U.S., real estate transaction has 85% to be formed by intermediary sevices transaction, it is seen that U.S.'s occupation house property medium Quantity is huge, so developing a set of coding lock system to aid in house property medium be with extremely important meaning.

With the growing of science and technology and constantly bring forth new ideas, realize that sell house interconnection networking, intellectuality of intermediary has become certainty Trend.Bluetooth is a kind of radiotechnics of holding equipment short haul connection, with long transmission distance, good confidentiality, and There is the advantages such as partition wall transmission, consolidated the developability of this design.Using Bluetooth technology, effectively can simplify mobile logical Communication between letter terminal unit.

Bluetooth technology mature is accompanied by, bluetooth is also just progressively applied among the digital equipment in each field, such as：Handss Machine, panel computer, notebook computer etc. some we live in commonly used digital product.Wherein mobile phone is the most universal, is based on This point we, we using mobile phone bluetooth function open coded lock, so as to change the unlatching of traditional locks.Set forth herein a kind of low Power consumption off-line cipher lock control device, more reduces power consumption, improves work efficiency, can meet U.S.'s house property warp very well Discipline Man's Demands, and meet the product of the trend of new technique.

Simultaneously as adopting Bluetooth transmission, the power power consumption of existing password lock is generally very big, affects device performance and use Life-span.After motor rotation a period of time that casket is locked in control, need to suspend rotation, i.e. motor rotation blockage.And traditional coded lock is in electricity During machine stall, the electric current increase of circuit for controlling motor, thus high energy consumption can be equally brought, while shortening motor service life.

Utility model content

In order to solve the deficiency of prior art presence, the purpose of this utility model is to provide a kind of low-power consumption off-line cipher Lock control device.The device connects keystroke interface circuit by using IQR interrupt lines, judges that key-press module or bluetooth module are No there is wake-up signal, completes the switching from park mode to mode of operation, to realize Timing Data Acquisition, it is ensured that code data Accuracy；By setting the threshold value of motor control electric current, work as motor rotation blockage, the electric current of circuit for controlling motor increases and exceeds and sets When determining threshold value, circuit for controlling motor prevents motor from rotating, it is ensured that the real-time of motor rotational strain and simultaneously reduction motor energy Consumption, ensures electrical machinery life.Coded lock control device described in the utility model is by button and APP Bluetooth transmission password figures Mode, control while each age group use demand of user is met this device without APP or during key response automatically into Park mode, reduces the overall power of device.This device is supported without network off-line working simultaneously, also be can guarantee that in the feelings without network Cryptosync under condition.

For achieving the above object, the low-power consumption off-line cipher lock control device that this utility model is provided, including CC2640 most Mini system and VDDR（VDDR is power pins name）Voltage supply circuit, double antenna and filter circuit, keystroke interface circuit, motor Control circuit, motor rotation-blocking detection circuit, 2 line cJTAG（Compact JTAG, ieee standard 1147.9）Connection circuit, MiniUSB（Mini Universal Serial BUS, USB (universal serial bus)）Interface circuit, external connection battery turn 3.3V circuits, USB5V turns 3.3V circuits, standby battery circuit and power module；

The input of wherein CC2640 minimum systems and VDDR voltage supply circuits be simultaneously connected with double antenna and filter circuit, Motor rotation-blocking detection circuit, 2 line cJTAG connection circuits, standby battery circuit and power module, CC2640 minimum systems and VDDR The outfan of voltage supply circuit is connected with keystroke interface circuit two-way communication link while circuit for controlling motor is connected；

The input of power module is simultaneously connected with MiniUSB interface circuits, external connection battery and turns 3.3V circuits and USB5V turn 3.3V circuits, the outfan of power module is simultaneously to 2 line cJTAG connection circuits, keystroke interface circuit, circuit for controlling motor and electricity Machine lock-rotor detection circuit is powered；

Iic bus interface is provided with described keystroke interface circuit, button data line interface in iic bus interface, is pressed Key clock line interface and keys interrupt line interface respectively with CC2640 minimum systems and VDDR voltage supply circuits in data Line interface, clock line interface, interruption line interface connection.Wherein, the keys interrupt line in iic bus interface is in independent IRQ Broken string, in control logic, IRQ interrupt lines determine whether iic bus are in running order.

Wherein, 32.768K sleep RTC are provided with described CC2640 minimum systems and VDDR voltage supply circuits（Real- Time Clock, real-time clock）.Meanwhile, equipment is furnished with standby battery circuit（110）For sleeping, RTC clock is powered, it is ensured that when Between synchronous, it is ensured that coded lock still has the time synchronized function of degree of precision in sleep.

Described key-press module is chip used for MPR121, is provided with iic bus interface, other similar cores in MPR121 chips General in piece do not have extra interrupt line or with certain restriction.IIC is provided with keystroke interface circuit（Inter- Integrated Circuit, internal integrated circuit）EBI, when iic bus interface includes button data line interface, button Clock line interface and a keys interrupt line interface, wherein keys interrupt line interface are IRQ（Interrupt Request, interrupting please Ask）Interrupt line interface.Button data line, button clock line, and keys interrupt line respectively with CC2640 minimum systems and VDDR Voltage supply circuit（101）In data line interface, clock line interface, interrupt line interface be connected, MPR121 modules by interrupt Line wakes up CC2640 minimum systems and VDDR voltage supply circuits（101）Afterwards, CC2640 minimum systems and VDDR voltages supply electricity Road（101）Export clock line sequential and read the data of data wire.While button in MPR121 key-press modules is subject to touching A low level interrupt signal is produced in IRQ interrupt lines, CC2640 minimum system receiving datas are notified.Called out by interrupt signal Awake corresponding circuit module, this just can ensure while data receiver instantaneity is improved that low-power consumption of the present utility model is special Property.

The filter circuit adopted in described double antenna and filter circuit is balun filter circuit, so as to ensure that signal is launched With receive stability, and to kernel power supply using low-and high-frequency filtering, it is ensured that " cleaning " of power supply.Meanwhile, double antenna is tied Structure also adds somewhat to the intensity of Bluetooth transmissions.

By NMOS in described circuit for controlling motor（N-Metal-Oxide-Semiconductor, N-type metal-oxide Thing-quasiconductor）Type field effect transistor connects motor, provides electric current needed for operation to motor.This utility model is locked by motor control During casket folding, by spring reset, the current control motor unlocking casket that provided by NMOS field effect transistor realizes that lock casket is closed.Only Need NMOS field effect transistor, it becomes possible to coordinate spring return mechanism to realize the double-direction control of lock casket, so as to avoid additional drives chip The energy consumption of generation when double-direction control is carried out so that this utility model more saves energy consumption.

Described motor rotation-blocking detection circuit includes current detection and feedback circuit, is serially connected with 1 watt of volume in current detection circuit Determine the sampling resistor of power.By sampling to the magnitude of voltage of sampling resistor, reflect the change of running current judging motor Whether stall there is.

2 described line cJTAG connection circuits are 2 line programming debud modes, it is only necessary to TMS（Test Mode Select, survey Examination model selection）Data wire and TCK（Test Clock, test clock）Clock line, just can realize firmware upgrade.

Described described external connection battery turns 3.3V circuits using TPS82740B chips, and TPS82740B passes through power module CC2640 minimum systems, keystroke interface circuit, circuit for controlling motor and 2 line cJTAG wired circuits are simultaneously connected with, and are powered. In mA level electric currents, external connection battery turns the conversion ratio that 3.3V circuits can realize 95%, greatly improves energy consumption utilization rate.

Described USB5V is turned 3.3V circuits and adopts AMS1117-3.3, AMS1117-3.3 to be simultaneously connected with by power module CC2640 minimum systems, keystroke interface circuit, circuit for controlling motor and 2 line cJTAG wired circuits.Standby battery circuit is used for Sleep RTC clock is powered, while ensureing time synchronized.

The MiniUSB interface circuits are a kind of more universal emergent interfaces.

This utility model compared to the prior art, have the advantages that including：

（1）Bluetooth of mobile phone signal and push button signalling are made by low-power consumption off-line cipher lock control device described in the utility model For wake-up signal, whether wake-up signal is produced by the electrical level judging of IRQ interrupt lines in iic bus.When without wake-up signal, will Device is placed in sleep pattern, after wake-up signal is received is switched to mode of operation from sleep pattern, resumes work, so as to reduce The power consumption of CC2640 minimum systems in device.CC2640 minimum systems are responsible for bluetooth communication in this device, also make simultaneously Peripheral circuit is controlled with signal for central processing unit.This device is slept so as to introduce due to increased IRQ interruption line structures Sleep mode reducing energy consumption, so that solve existing control device for security consideration, it is impossible to using high capacity cell, and cause Usage cycles short, have a strong impact on the problem of the work efficiency efficiency of device.Give tacit consent in this utility model and control device is placed in Sleep pattern, receives wake-up signal by IRQ interrupt lines, so as to Rouser carries out normal operating conditions, effectively extends control The service life of device；

（2）While this utility model maintains control device service life by sleep pattern, by standby battery circuit To sleeping, RTC clock is powered so that 32.768K sleep RTC clocks ensure that coded lock remains to keep more high-precision in sleep The time synchronized of degree.So that this device can be waken up in a sleep state at any time, receives password and respond unlocking instruction.Cause And, normal use is not interfered with while device service life is ensured.

（3）This device connects motor by nmos type field effect transistor in circuit for controlling motor, provides controlled motor to motor Electric current needed for lock casket is opened in operation, while realizing that lock casket is closed by spring reset.Reduce when the double-direction control of lock casket is realized The use of field effect transistor in driving chip, saves as realizing energy that double-direction control is consumed.When considering to unlock, when control lock After the motor of casket rotates a period of time, motor needs to suspend and rotates.This function needs to realize by physics stall, therefore this dress Putting, the sampling resistor of 1 watt of rated power is serially connected with motor operation circuit to detect locked rotor current.Set when locked rotor current is more than Immediately stop motor when definite value, it is to avoid motor unnecessarily dallies, further save power supply power consumption output.Ensureing device Motor is protected while low power capabilities, extends the service life of motor and whole device.

（4）With button two ways is locked, this utility model realizes that password is transmitted using mobile phone A PP, both met each of user The demand of age bracket ensure that the safety of password transmission again simultaneously.Simultaneously connecting without APP or device is being set during key response Automatically into park mode, reduce the overall power consumption of device.3.3V circuits are turned as external connection battery using TPS82740B, in mA 95% energy transformation ratio is realized during level electric current for device, greatly improves the energy consumption utilization rate of device.Meanwhile, adopt ASM1117-3.3 turns 3.3V circuits as USB5V and powers for device, RTC clock of sleeping is powered using standby battery circuit, with When ensure time synchronized.This device also provides a MiniUSB interface simultaneously, by this more universal emergent interface tight Electric energy is provided for device under anxious state.

Description of the drawings

Accompanying drawing is used for providing and further understanding to of the present utility model, and constitutes a part for description, and with this reality With new embodiment together, for explaining this utility model, do not constitute to restriction of the present utility model.In the accompanying drawings：

Fig. 1 is off-line cipher lock control device block diagram of the present utility model；

Fig. 2 is CC2640 minimum systems plate design drawing of the present utility model；

Fig. 3 is power vd D_EB（Power pins name）Filter circuit；

Fig. 4 is CC2640 chip VDDR voltage supply circuits；

Fig. 5 is that balun filter circuit of the present utility model is designed with double antenna；

Fig. 6 is the connection circuit of MPR121 induced key modules；

Fig. 7 turns 3.3V circuit diagrams for 5V and RTC reserve batteries supply electrograph；

Fig. 8 is circuit for controlling motor figure and lock-rotor detection circuit figure；

Fig. 9 is MiniUSB interface circuit figures；

Figure 10 downloads 2 line cJTAG wiring diagrams for the Debug of CC2640；

Figure 11 turns 3.3V schematic diagrams (powering for CC2640 kernels) for external connection battery voltage.

Specific embodiment

Preferred embodiment of the present utility model is illustrated below in conjunction with accompanying drawing, it will be appreciated that described herein excellent Select embodiment to be merely to illustrate and explain this utility model, be not used to limit this utility model.

Control device described in the utility model is applied to be connect by Keysheet module, mobile phone terminal bluetooth applications module and single-chip microcomputer Receive in the system constituted by three part of control module.Whole system realizes data transfer using input through keyboard or bluetooth.User Can select to unlock using conventional cipher disk button or be unlocked by mobile phone A PP in the range of several meters.Master control receives data Afterwards, will determine that whether password is consistent with presetting cipher, if password is correct, drive door-lock motor to unlock.This utility model is corresponding Single-chip microcomputer in said system receives control module, is mainly responsible for connection bluetooth and keyboard, determines whether Password Input, is input into Password whether correct, and casket is locked according to cipher control open and close.

Low-power consumption off-line cipher lock control device described herein is sold for managing house on antitheft door of house The key and buyer deposited by family obtains key with backstage password.In device, CC2640 minimum systems, keystroke interface circuit be all Be set to park mode, after CC2640 minimum systems receive wake-up signal will above-mentioned both be set to reception pattern, wake up CC2640 minimum systems, peripheral hardware, kernel, RTC etc. recover normal and run.Now, when CC2640 is used as bluetooth side, terminal is stored The password value of a certain passage of transmission; When CC2640 is used as main control end, also begin to by iic bus to MPR121 module transfers Initialization value so as to normal work, to receive button transmission password value.At the same time, CC2640 internal processes produce with when Between for seed keying sequence, the password value contrast that itself and transmission are obtained judges whether to need controlled motor to run: if button Password or terminal password are correct, and lock casket motor brings into operation; When motor rotation blockage, master control can be by detection sampling resistor all the way The detected value of ADC is compared with the threshold value for arranging, if detected value is more than threshold value, closes motor immediately.When button for a period of time Inside do not respond to or when mobile phone terminal does not initiate to connect, CC2640 minimum systems enter park mode, wait wake-up signal. Wake-up signal has two kinds, and a kind of is that CC2640 arranges bluetooth 500ms interval repeated broadcast and is set to the Server ends angle of peripheral hardware During color, mobile phone terminal scans peripheral hardware the signal for initiating to connect as the Client role in central authorities; Another kind is touch key-press mould Block(MPR121 key-press modules) When whether detection button is pressed and indicate the respective value of button, produced when button is pressed IRQ line low level signals.

With reference to the accompanying drawings and detailed description, the concrete structure of this device is described further：

As shown in Figure 1, the present embodiment provides a kind of low-power consumption off-line cipher lock control device, comprises CC2640 minimum system And VDDR voltage supply circuits 101, double antenna and filter circuit 102, keystroke interface circuit 103, circuit for controlling motor 104, electricity Machine lock-rotor detection circuit 105,2 line cJTAG(Compact JTAG, ieee standard 1147.9) Connection circuit 106, MiniUSB (Mini Universal Serial BUS, USB (universal serial bus)) Interface circuit 107, external connection battery turn 3.3V circuits 108, USB5V turns 3.3V circuits 109, standby battery circuit 110 and power module;

The input of wherein CC2640 minimum systems and VDDR voltage supply circuits 101 is simultaneously connected with double antenna and filtered electrical Road 102, motor rotation-blocking detection circuit 105,2 line cJTAG connection circuits 106, standby battery circuit 110 and power module, The outfan of CC2640 minimum systems and VDDR voltage supply circuits 101 connect circuit for controlling motor 104 while and button 103 two-way communication link of interface circuit connects；

The input of power module is simultaneously connected with MiniUSB interface circuits 107, external connection battery and turns 108 and of 3.3V circuits USB5V turns 3.3V circuits 109, the outfan of power module simultaneously to 2 line cJTAG connection circuits 106, keystroke interface circuit 103, Circuit for controlling motor 104 and motor rotation-blocking detection circuit 105 are powered；

Iic bus interface is provided with described keystroke interface circuit 103, button data line interface in iic bus interface, Button clock line interface and keys interrupt line interface respectively with CC2640 minimum systems and VDDR voltage supply circuits 101 in Data line interface, clock line interface, interruption line interface connection.

Described CC2640 minimum systems and VDDR voltage supply circuits 101 are applied to CC26 ×× family chips. 32.768K sleep RTC clocks are provided with CC2640 minimum systems and VDDR voltage supply circuits.Meanwhile, equipment is furnished with standby electricity Pond circuit（110）For sleeping, RTC clock is powered, it is ensured that time synchronized, it is ensured that coded lock still has degree of precision in sleep Time synchronized function.

Chip used by described key-press module is MPR121.IIC is provided with keystroke interface circuit 103（Inter- Integrated Circuit, internal integrated circuit）EBI, when iic bus interface includes button data line interface, button Clock line interface and a keys interrupt line interface, wherein keys interrupt line interface are IRQ（Interrupt Request, interrupting please Ask）Interrupt line interface.Button data line, button clock line, and keys interrupt line respectively with CC2640 minimum systems and VDDR Voltage supply circuit（101）In data line interface, clock line interface, interrupt line interface be connected, MPR121 modules by interrupt Line wakes up CC2640 minimum systems and VDDR voltage supply circuits（101）Afterwards, CC2640 minimum systems and VDDR voltages supply electricity Road（101）Export clock line sequential and read the data of data wire.While button in MPR121 key-press modules is subject to touching A low level interrupt signal is produced in IRQ interrupt lines, CC2640 minimum system receiving datas are notified.This can just improve Ensure low power consumption characteristic of the present utility model while data receiver instantaneity.

The filter circuit adopted in described double antenna and filter circuit is balun filter circuit, so as to ensure that signal is launched With receive stability, and to kernel power supply using low-and high-frequency filtering, it is ensured that " cleaning " of power supply.Double-antenna structure can Increase Bluetooth transmissions intensity to a certain extent.In bluetooth unlocking mode, password used of unlocking is adopted with the time as seed Dynamic password, application end sends keying sequence, and master control can be by the internal keying sequence for producing and the password for obtaining after receiving Sequence carries out correctness comparison, and then judges whether to unlock.Generally, successfully rear motor of unlocking is in locked rotor condition, this When realize current sample by way of ADC sampling resistor magnitudes of voltage by series resistor, master control stops motor after accurately judging Turn.

By NMOS in described circuit for controlling motor（N-Metal-Oxide-Semiconductor, N-type metal-oxide Thing-quasiconductor）Type field effect transistor connects motor, provides electric current needed for operation to motor.This utility model is locked by motor control During casket folding, by spring reset, the current control motor unlocking casket that provided by NMOS field effect transistor realizes that lock casket is closed.Only Need NMOS field effect transistor, it becomes possible to coordinate spring return mechanism to realize the double-direction control of lock casket, can so avoid additional drives Additional energy produced by the double-direction control of chip, further reduces device power in use.

Described motor rotation-blocking detection circuit includes current detection and feedback circuit, is serially connected with 1 watt of volume in current detection circuit Determine the sampling resistor of power.By sampling to the magnitude of voltage of sampling resistor, reflect the change of running current judging motor Whether stall there is.

In the present embodiment, the operation principle of circuit for controlling motor and lock-rotor detection circuit is：CC2640 control NMOS fields effect Should be after pipe input high level so that wherein D, S level conducting, and then normally run for motor enough electric currents are provided；When motor is blocked up When turning, running current increases suddenly, and the change in voltage on the sampling resistor of the 1 watt of rated power concatenated by detection just can reflect Whether stall.

2 described line cJTAG connection circuits are 2 line programming debud modes, it is only necessary to TMS（Test Mode Select, survey Examination model selection）Data wire and TCK（Test Clock, test clock）Clock line, just can realize firmware upgrade.

Described described external connection battery turns 3.3V circuits and adopts TPS82740B, TPS82740B to pass through power module simultaneously Connection CC2640 minimum systems, keystroke interface circuit and circuit for controlling motor are simultaneously powered, and realize 95% conversion in mA level electric currents Rate, greatly improves energy consumption utilization rate.

Described USB5V is turned 3.3V circuits and adopts AMS1117-3.3, AMS1117-3.3 to be simultaneously connected with by power module CC2640 minimum systems, keystroke interface circuit and circuit for controlling motor power supply.Standby battery circuit is used for RTC clock confession of sleeping Electricity, while ensure time synchronized.

The MiniUSB interface circuits are a kind of more universal emergent interfaces.

The hardware elementary diagram of the present embodiment mainly includes five parts：

Fig. 2,3,4,5 are CC2640 minimum systems and VDDR voltage supply circuits 101, double antenna and filter circuit 102 etc. The schematic diagram of minimum system design.When CC2640 minimum systems and VDDR voltage supply circuits 101 are using 32.768K sleep RTC Clock, and it is furnished with RTC reserve batteries, it is ensured that coded lock still has the time synchronized function of degree of precision in sleep；The double antenna And filter circuit 102 adopts balun filter circuit to double antenna, it is ensured that signal transmitting and the stability for receiving, and kernel is powered Power supply is filtered using low-and high-frequency, it is ensured that " cleaning " of power supply, meanwhile, using double antenna, bluetooth can be increased to a certain extent The intensity of transmission signal.In the system, the main I/O mouths service conditions of CC2640 are as follows：DIO_2, DIO_3 are used for the serial ports of system The receiving terminal and transmitting terminal of communication；DIO_10 ~ 17 are used for the display of LED, and LED plays the work of display lamp in this secondary design With；DIO_5, DIO_6 are used for data wire and clock line in MPR121 module ii C interface, respectively number correspondingly described in description According to line interface and clock line interface；DIO_7 is used for the interruption of key-press module and wakes up, i.e., the interrupt line correspondingly described in description connects Mouthful；DIO 21, DIO_22 is used for the motor control for locking casket and U locks, and DIO_23, DIO_24 are used for the voltage detecting of sampling resistor； DIO _ 8, DIO_9, DIO_30 are used for SPI（Serial Peripheral Interface, Serial Peripheral Interface (SPI)）, if possible If, the interface of display screen is reserved as with this.

Fig. 6 is the figure of key-press module circuit and interface circuit 103.MPR121 modules carry an interrupt output pin IRQ That is keys interrupt line interface（IRQ pins in corresponding Fig. 6, are connected with DIO_7 pins in Fig. 2）, CC2640 minimum system plates（Fig. 2） The depositor of chip can be read by IIC or directly judge that IRQ pin levels change determining whether that button is pressed.If Keyboard has touch sensible, IRQ（IRQ pins in corresponding Fig. 6, are connected with DIO_7 pins in Fig. 2）Level change triggers are interrupted, CC2640 minimum system plates（Fig. 2）Given SCL clock line（Serial Clock Line, serial time clock line, DIO_ in corresponding Fig. 2 6 pins, with SCL_3.3V pins in Fig. 6, i.e. button clock line interface, are connected.12 SCL cycles are a key scan week Phase, corresponding 12 buttons）, and SDA is passed through with identical sequential（Serial Data Line, serial data line, in corresponding Fig. 2 DIO_5 pins, with SDA_3.3V pins in Fig. 6, i.e. button data line interface, are connected）Read 12 depositors of MPR121 Value.As MPR121 has a special depositor SRT, in RUN MODE（That is mode of operation）Or STOP MODE（Sleep Pattern）Under can be realized by IIC write operations MPR121 enter POR（POWER ON RESET）Power-up initializing pattern, That is sleep pattern.Now IIC is still work, therefore can write initialization register by IIC again, so that MPR121 enters Enter mode of operation.To sum up, MPR121 freely can be carried out sleeping/the switching of mode of operation, but have some mandatory declarations：MPR121 Sleep pattern keyboard can not be realized touching or proximity test, and IRQ cannot also produce interruption, and this is waken up to master control certain office Sex-limited.

Fig. 8 is circuit for controlling motor 104 and lock-rotor detection circuit 105, is strengthened using the amplification of field effect transistor and is driven Ability, using SI2302 type NMOS field effect transistor；The gate input voltage of field effect transistor, PMOS（P-Metal-Oxide- Semiconductor, p-type Metal-oxide-semicondutor）The source electrode of pipe meets power supply VCC, and the drain electrode of PMOS is connect by motor Positive source, the source electrode of PMOS are grounded by sampling resistor；When input voltage is low-voltage, do not have between gate leve and source class Pressure reduction, field effect transistor is by motor operation circuit disconnects, and motor will not run；When input voltage is high voltage, gate leve and source Level pressure reduction causes field effect transistor drain electrode and source conduction, so motor operation circuit connection, motor operation.When motor rotation blockage, Running current increases suddenly, can realize close loop maneuver, gone here and there by detection by way of ADC samples series resistor magnitude of voltage The change in voltage of connecting resistance just can reflect whether stall, if magnitude of voltage is more than certain threshold value, then it is assumed that stall, now should make in time The gate leve input low level of field effect transistor, stops motor.

Figure 10 is that the Debug of CC2640 downloads 2 line cJTAG wiring Figure 106, carries out firmware for technical staff to coded lock Upgrading.CC26xx family chips generally require special emulator, model xds100v3_cJTAG, and interface is USB2.0 high speeds Interface, this secondary design use TMS, TCK, PD, RST, VCC, GND to amount to 6 feet, as shown in the figure.Especially set out is in attention figure PD feet in xds100v3 interfaces, actually connect external module and feed back to voltage inside xds100v3, because core during emulation Piece uses the 3.3V of xds100v3 to export as power supply, therefore, that is, this 3.3V is fed back to PD feet, allows well xds100v3 Inside know the supply voltage of current chip.

Mainly turning 3.3V circuits 108, USB5V including MiniUSB interface circuits 107, external connection battery turns 3.3V for Fig. 7,9,11 Circuit 109, standby battery circuit 110.MiniUSB interface circuits 107 turn 3.3V circuits 109 there is provided emergency power supply with USB5V, Application MiniUSB can power for coded lock；External connection battery turns 3.3V circuits 108 and provides main power source for coded lock, including The power supply supply of CC2640 minimum systems 101, keystroke interface circuit 103, circuit for controlling motor 104 etc.；Standby battery circuit 110 Then it is used for running in RTC clock.

Coded lock of the present utility model has three-way power.MiniUSB interface circuits turn 3.3V circuits with USB5V to be used for providing Emergency power supply, wherein MiniUSB can be powered for coded lock.External connection battery turns 3.3V circuits and provides main power source for coded lock, realizes Power supply including CC2640 minimum systems, keystroke interface circuit, circuit for controlling motor etc. is supplied；Standby battery circuit is then used for RTC clock runs.

This utility model can also be supported without network off-line working, can be situations such as password match unlocking casket and U lock Cryptosync is carried out in the case of without network.Database background application cryptographic algorithm is consistent with cryptographic algorithm in CC2640 minimum systems, Adopt algorithm with the present terminal time as object to generate dynamic password, it is close that such user mobile phone terminal APP obtains backstage Password is passed to utility model after code, and be suitable for new which is verified with the internal password that produces, be just capable of determining whether to unlock Casket.Now, as this device and backstage do not have network communication, it is to ensure cryptographic calculations precision, needs to pass through every a period of time Backoff period is carried out bluetooth communication time service to this utility model by mobile phone terminal APP, so that device was kept with the time on backstage Unanimously, so that it is guaranteed that the normal accurate operation of off line.

One of ordinary skill in the art will appreciate that：Preferred embodiment of the present utility model is the foregoing is only, and Restriction this utility model is not used in, although being described in detail to this utility model with reference to the foregoing embodiments, for ability For the technical staff in domain, which still can be modified to the technical scheme that foregoing embodiments are recorded, or in the middle part of which Technical characteristic is divided to carry out equivalent.All any modifications that within spirit of the present utility model and principle, is made, equivalent are replaced Change, improve, should be included within protection domain of the present utility model.

Claims (9)

1. a kind of low-power consumption off-line cipher lock control device, it is characterised in that supply including CC2640 minimum systems and VDDR voltages Give circuit（101）, double antenna and filter circuit（102）, keystroke interface circuit（103）, circuit for controlling motor（104）, motor block up Turn detection circuit（105）, 2 line cJTAG connection circuits（106）, MiniUSB interface circuits（107）, external connection battery turn 3.3V circuits （108）, USB5V turn 3.3V circuits（109）, standby battery circuit（110）And power module；

Wherein CC2640 minimum systems and VDDR voltage supply circuits（101）Input be simultaneously connected with double antenna and filter circuit （102）, motor rotation-blocking detection circuit（105）, 2 line cJTAG connection circuits（106）, standby battery circuit（110）With power supply mould Block, CC2640 minimum systems and VDDR voltage supply circuits（101）Outfan connection circuit for controlling motor（104）While With keystroke interface circuit（103）Two-way communication link connects；

The input of power module is simultaneously connected with MiniUSB interface circuits（107）, external connection battery turn 3.3V circuits（108）With USB5V turns 3.3V circuits（109）, the outfan of power module is simultaneously to 2 line cJTAG connection circuits（106）, keystroke interface circuit （103）, circuit for controlling motor（104）And motor rotation-blocking detection circuit（105）Power supply；

Described keystroke interface circuit（103）In be provided with iic bus interface, button data line interface in iic bus interface, press Key clock line interface and keys interrupt line interface respectively with CC2640 minimum systems and VDDR voltage supply circuits（101）In Data line interface, clock line interface, interruption line interface connection.

2. low-power consumption off-line cipher lock control device as claimed in claim 1, it is characterised in that the minimum systems of described CC2640 System and VDDR voltage supply circuits（101）In be provided with 32.768K sleep RTC.

3. low-power consumption off-line cipher lock control device as claimed in claim 1, it is characterised in that used by described key-press module Chip is MPR121.

4. low-power consumption off-line cipher lock control device as claimed in claim 1, it is characterised in that described double antenna and filtering Circuit（102）The middle filter circuit for adopting is for balun filter circuit.

5. low-power consumption off-line cipher lock control device as claimed in claim 1, it is characterised in that described circuit for controlling motor （104）In by nmos type field effect transistor connect motor.

6. low-power consumption off-line cipher lock control device as claimed in claim 1, it is characterised in that described motor rotation blockage detection Circuit（105）Including current detection and feedback circuit, the sampling resistor of 1 watt of rated power in current detection circuit, is serially connected with.

7. low-power consumption off-line cipher lock control device as claimed in claim 1, it is characterised in that 2 described line cJTAG wiring Circuit（106）For 2 line programming debud modes.

8. low-power consumption off-line cipher lock control device as claimed in claim 1, it is characterised in that described external connection battery turns 3.3V circuit（108）Using TPS82740B chips, external connection battery turns 3.3V circuits（108）It is simultaneously connected with by power module CC2640 minimum systems（101）, keystroke interface circuit（103）And circuit for controlling motor（104）And power.

9. low-power consumption off-line cipher lock control device as claimed in claim 1, it is characterised in that described USB5V turns 3.3V Circuit（109）Using AMS1117-3.3 chips, USB5V turns 3.3V circuits（109）CC2640 is simultaneously connected with most by power module Mini system（101）, keystroke interface circuit（103）, circuit for controlling motor（104）And 2 line cJTAG connection circuits（106）.