CN110782565A - Wireless identification fingerprint device and intelligent lock equipment - Google Patents
Wireless identification fingerprint device and intelligent lock equipment Download PDFInfo
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- CN110782565A CN110782565A CN201911082293.1A CN201911082293A CN110782565A CN 110782565 A CN110782565 A CN 110782565A CN 201911082293 A CN201911082293 A CN 201911082293A CN 110782565 A CN110782565 A CN 110782565A
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
- G07C9/00309—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with bidirectional data transmission between data carrier and locks
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
- G07C9/00563—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys using personal physical data of the operator, e.g. finger prints, retinal images, voicepatterns
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
- G07C2009/00634—Power supply for the lock
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention discloses a wireless fingerprint identification device which comprises a fingerprint acquisition module, an information calculation chip, a controller integrated with a Bluetooth module, an acquisition detection module and a chip power supply module. When the fingerprint information is collected by the fingerprint collecting module, the wireless fingerprint identification device informs the controller to read the fingerprint information from the fingerprint collecting module, controls the information computing chip to be powered on at the moment, and controls the information computing chip to be powered off when the fingerprint information is read and finished by the controller, namely, the intelligent lock device is powered on when the information computing chip is required to be used by the intelligent lock device; when the intelligent lock device does not need to use the information calculation chip, the intelligent lock device is powered off, so that the power consumption of the information calculation chip is low, and the standby power consumption of the intelligent lock device is reduced. Moreover, this application accessible bluetooth module remote transmission fingerprint information is unblanked to realize remote unblanking. The invention also discloses intelligent lock equipment which has the same beneficial effects as the wireless fingerprint identification device.
Description
Technical Field
The invention relates to the technical field of intelligent lock equipment, in particular to a wireless fingerprint identification device and intelligent lock equipment.
Background
At present, the intelligence lock equipment mostly adopts fingerprint identification technology to realize the operation of opening the door, please refer to fig. 1, the fingerprint identification device of intelligence lock equipment includes: the fingerprint acquisition module is used for acquiring fingerprint information of a user; an information calculation chip; and the controller is used for processing the fingerprint information into digital information by using the information computing chip and carrying out fingerprint identification according to the digital information. However, the existing information computing chip is always in a power-on state, even if the intelligent lock device is in a standby state, the information computing chip is still powered on, and the power consumption of the information computing chip is large, so that the standby power consumption of the device is large; moreover, the existing fingerprint identification device can only be unlocked by a user who personally collects fingerprint information, and cannot realize remote unlocking.
Therefore, how to provide a solution to the above technical problem is a problem that needs to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide a wireless fingerprint identification device and intelligent lock equipment, wherein the intelligent lock equipment is powered on when an information calculation chip is required to be used; when the intelligent lock device does not need to use the information calculation chip, the intelligent lock device is powered off, so that the power consumption of the information calculation chip is low, and the standby power consumption of the intelligent lock device is reduced. Moreover, this application accessible bluetooth module remote transmission fingerprint information is unblanked to realize remote unblanking.
In order to solve the above technical problem, the present invention provides a wireless fingerprint identification device, which includes a fingerprint acquisition module, an information computing chip, and a controller integrated with a bluetooth module, and further includes:
the acquisition detection module is respectively connected with the fingerprint acquisition module and the controller and is used for informing the controller to read the fingerprint information from the fingerprint acquisition module when the fingerprint acquisition module is detected to acquire the fingerprint information;
the chip power supply module is respectively connected with the controller and the power supply end of the information calculation chip;
the controller is used for controlling the chip power supply module to supply power to the information computing chip when the fingerprint information is read; after the fingerprint information is read, controlling the chip power supply module to stop supplying power to the information computing chip; after the Bluetooth module is utilized to receive the digital fingerprint information, fingerprint identification is directly carried out according to the digital fingerprint information.
Preferably, the chip power supply module includes a switching power supply chip, an inductor, a first feedback resistor, a second feedback resistor, a first feedback capacitor, a second feedback capacitor, and a third feedback capacitor; wherein:
the control end of the switching power supply chip is connected with the controller, the power output end of the switching power supply chip is connected with the first end of the inductor, the second end of the inductor is respectively connected with the power supply end of the information calculation chip, the first end of the third feedback capacitor, the first end of the second feedback capacitor, the first end of the first feedback capacitor and the first end of the first feedback resistor, the second end of the third feedback capacitor and the second end of the second feedback capacitor are grounded, the second end of the first feedback capacitor is respectively connected with the second end of the first feedback resistor, the first end of the second feedback resistor and the feedback end of the switching power supply chip, and the second end of the second feedback resistor is grounded;
the controller is specifically used for generating an enable signal when the fingerprint information is read, so that the chip power supply module correspondingly outputs power supply voltage to the information computing chip according to a self feedback voltage value after receiving the enable signal; and stopping generating an enabling signal after the fingerprint information is read, so that the chip power supply module stops outputting power supply voltage to the information computing chip.
Preferably, the input power supply connected to the input terminal of the switching power supply chip includes a first battery pack, a second battery pack, a first diode, and a second diode; wherein:
the anode of the first battery pack is connected with the anode of the first diode, the anode of the second battery pack is connected with the anode of the second diode, the cathode of the first diode is connected with the cathode of the second diode, the common end of the first diode is connected with the input end of the switching power supply chip, and the cathode of the first battery pack and the cathode of the second battery pack are both grounded.
Preferably, the input power supply further comprises a zener diode and a first capacitor; wherein:
and the cathode of the voltage stabilizing diode is connected with the first end of the first capacitor, the common end of the voltage stabilizing diode is connected with the input end of the switching power supply chip, and the anode of the voltage stabilizing diode and the second end of the first capacitor are both grounded.
Preferably, the bluetooth module is a bluetooth module of an EMB1061 model.
Preferably, the acquisition detection module includes:
the touch detection chip is connected with the fingerprint acquisition module at the detection end and the controller at the output end, and is used for outputting a high-level signal to the controller when detecting that the fingerprint acquisition module generates a rising edge signal so as to inform the controller to read the fingerprint information from the fingerprint acquisition module.
Preferably, the acquisition detection module further comprises a pull-down resistor and a transient suppression diode; wherein:
the first end of the pull-down resistor is connected with the first end of the transient suppression diode, the common end of the pull-down resistor is connected to the detection end of the touch detection chip, and the second end of the pull-down resistor and the second end of the transient suppression diode are both grounded.
Preferably, the acquisition detection module further comprises a second capacitor and a third capacitor; wherein:
the first end of the second capacitor is connected with the fingerprint acquisition module, the first end of the pull-down resistor and the first end of the transient suppression diode respectively, the second end of the second capacitor is connected with the detection end of the touch detection chip and the first end of the third capacitor respectively, and the second end of the third capacitor is grounded.
Preferably, the collection and detection module further comprises a magnetic bead and a fourth capacitor; wherein:
the power end of the touch detection chip is respectively connected with the first end of the fourth capacitor and the first end of the magnetic bead, the second end of the fourth capacitor is grounded, and the second end of the magnetic bead is connected with a direct-current power supply.
In order to solve the technical problem, the invention also provides intelligent lock equipment which comprises any one of the wireless fingerprint identification devices.
The invention provides a wireless fingerprint identification device which comprises a fingerprint acquisition module, an information calculation chip, a controller integrated with a Bluetooth module, an acquisition detection module and a chip power supply module. When the fingerprint information is collected by the fingerprint collecting module, the wireless fingerprint identification device informs the controller to read the fingerprint information from the fingerprint collecting module, controls the information computing chip to be powered on at the moment, and controls the information computing chip to be powered off when the fingerprint information is read and finished by the controller, namely, the intelligent lock device is powered on when the information computing chip is required to be used by the intelligent lock device; when the intelligent lock device does not need to use the information calculation chip, the intelligent lock device is powered off, so that the power consumption of the information calculation chip is low, and the standby power consumption of the intelligent lock device is reduced. Moreover, this application accessible bluetooth module remote transmission fingerprint information is unblanked to realize remote unblanking.
The invention also provides intelligent lock equipment which has the same beneficial effects as the wireless fingerprint identification device.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed in the prior art and the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic diagram of a fingerprint identification device according to the prior art;
FIG. 2 is a schematic structural diagram of a wireless fingerprint identification device according to the present invention;
fig. 3 is a schematic structural diagram of a chip power module according to the present invention;
fig. 4 is a schematic structural diagram of a bluetooth module according to the present invention;
fig. 5 is a schematic structural diagram of an acquisition and detection module according to the present invention.
Detailed Description
The core of the invention is to provide a wireless fingerprint identification device and an intelligent lock device, wherein the intelligent lock device is powered on when needing to use an information computing chip; when the intelligent lock device does not need to use the information calculation chip, the intelligent lock device is powered off, so that the power consumption of the information calculation chip is low, and the standby power consumption of the intelligent lock device is reduced. Moreover, this application accessible bluetooth module remote transmission fingerprint information is unblanked to realize remote unblanking.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a wireless fingerprint identification device according to the present invention.
This wireless identification fingerprint device includes fingerprint collection module 1, information calculation chip 2 and integrated controller 3 that has bluetooth module, still includes:
the acquisition detection module 4 is respectively connected with the fingerprint acquisition module 1 and the controller 3 and is used for informing the controller 3 to read the fingerprint information from the fingerprint acquisition module 1 when detecting that the fingerprint acquisition module 1 acquires the fingerprint information;
the chip power supply module 5 is respectively connected with the power supply ends of the controller 3 and the information calculation chip 2;
the controller 3 is used for controlling the chip power supply module 5 to supply power to the information computing chip 2 when reading the fingerprint information; after the fingerprint information is read, controlling the chip power supply module 5 to stop supplying power to the information computing chip 2; after the Bluetooth module is used for receiving the digital fingerprint information, fingerprint identification is directly carried out according to the digital fingerprint information.
Specifically, the wireless identification fingerprint device of this application includes fingerprint collection module 1, information calculation chip 2, integrated controller 3 that has bluetooth module, collection detection module 4 and chip power module 5, and its theory of operation is:
when a user touches the fingerprint acquisition module 1 with a finger, the fingerprint acquisition module 1 acquires fingerprint information, and meanwhile, the fingerprint acquisition module 1 generates a touch signal and sends the touch signal to the acquisition detection module 4. When receiving the touch signal, the acquisition detection module 4 detects that the fingerprint acquisition module 1 is acquiring the fingerprint information, and notifies the controller 3 to read the fingerprint information from the fingerprint acquisition module 1.
After being informed of reading the fingerprint information, the controller 3 immediately triggers the chip power supply module 5 to power on the information computing chip 2, so that the information computing chip 2 is in a power-on state when the controller 3 reads the fingerprint information, and subsequent fingerprint identification is realized. After the information computing chip 2 is powered on, the fingerprint information is actively requested to the controller 3, the fingerprint information is digitized to obtain digital information, and then the digital information is output to the controller 3, so that the controller 3 performs fingerprint identification according to the digital information.
It should be noted that the speed of reading the fingerprint information by the controller 3 and the time of processing the fingerprint information by the information computing chip 2 are fast and short, and it can be considered that the fingerprint information is read by the controller 3 and processed by the information computing chip 2. Based on this, after the controller 3 reads the fingerprint information, the chip power supply module 5 is controlled to stop supplying power to the information computing chip 2, so that the information computing chip 2 is in a power-off state after the device enters a standby state.
In addition, when the user unlocks from intelligent lock equipment a distance but can't gather fingerprint information in person, the bluetooth module at user accessible terminal is to bluetooth module wireless transmission digital fingerprint information in the intelligent lock equipment, and controller 3 can directly carry out fingerprint identification according to digital fingerprint information after bluetooth module receives digital fingerprint information, realizes remote unlocking.
It should be noted that, the terminal includes a fingerprint acquisition module, which is used for acquiring fingerprint information of the user; an information calculation chip; the controller integrated with the Bluetooth module is used for processing the fingerprint information into digital fingerprint information by using the information computing chip and wirelessly transmitting the digital fingerprint information to the Bluetooth module in the intelligent lock equipment when the door needs to be opened remotely.
The invention provides a wireless fingerprint identification device which comprises a fingerprint acquisition module, an information calculation chip, a controller integrated with a Bluetooth module, an acquisition detection module and a chip power supply module. When the fingerprint information is collected by the fingerprint collecting module, the wireless fingerprint identification device informs the controller to read the fingerprint information from the fingerprint collecting module, controls the information computing chip to be powered on at the moment, and controls the information computing chip to be powered off when the fingerprint information is read and finished by the controller, namely, the intelligent lock device is powered on when the information computing chip is required to be used by the intelligent lock device; when the intelligent lock device does not need to use the information calculation chip, the intelligent lock device is powered off, so that the power consumption of the information calculation chip is low, and the standby power consumption of the intelligent lock device is reduced. Moreover, this application accessible bluetooth module remote transmission fingerprint information is unblanked to realize remote unblanking.
On the basis of the above-described embodiment:
referring to fig. 3, fig. 3 is a schematic structural diagram of a chip power module according to the present invention.
As an alternative embodiment, the chip power supply module 5 includes a switching power supply chip U1, an inductor L1, a first feedback resistor R2, a second feedback resistor R3, a first feedback capacitor C11, a second feedback capacitor C12, and a third feedback capacitor C13; wherein:
the control end of the switching power supply chip U1 is connected with the controller 3, the power output end of the switching power supply chip U1 is connected with the first end of an inductor L1, the second end of the inductor L1 is respectively connected with the power supply end of the information calculating chip 2, the first end of a third feedback capacitor C13, the first end of a second feedback capacitor C12, the first end of a first feedback capacitor C11 and the first end of a first feedback resistor R2, the second end of the third feedback capacitor C13 and the second end of a second feedback capacitor C12 are both grounded, the second end of the first feedback capacitor C11 is respectively connected with the second end of a first feedback resistor R2, the first end of the second feedback resistor R3 and the feedback end of the switching power supply chip U1, and the second end of the second feedback resistor R3 is grounded;
the controller 3 is specifically configured to generate an enable signal when the fingerprint information is read, so that the chip power supply module correspondingly outputs a power supply voltage to the information calculation chip 2 according to a self feedback voltage value after receiving the enable signal; and stopping generating the enabling signal after the fingerprint information is read, so that the chip power supply module 5 stops outputting the power supply voltage to the information computing chip 2.
Specifically, the chip power supply module 5 of the present application includes a switching power supply chip U1, an inductor L1, a first feedback resistor R2, a second feedback resistor R3, a first feedback capacitor C11, a second feedback capacitor C12, and a third feedback capacitor C13, and its working principle is:
the controller 3 generates an enable signal to the chip power supply module 5 when reading the fingerprint information. After receiving the enable signal, the chip power supply module 5 correspondingly outputs a certain power supply voltage to the information calculation chip 2 according to the voltage value input by the feedback end of the chip power supply module 5, and the information calculation chip 2 is powered on, specifically, the size of the voltage signal output by the power output end of the chip power supply module 5 depends on the voltage value input by the feedback end of the chip power supply module 5, and the voltage value input by the feedback end of the chip power supply module 5 can be adjusted by changing the resistance values of the first feedback resistor R2 and the second feedback resistor R3, so as to provide the required power supply voltage VDDW for the information calculation chip 2; the voltage signal output by the power output terminal of the chip power supply module 5 is not a stable voltage value, and the voltage signal is stabilized to the power supply voltage required by the information computation chip 2 by using the first feedback capacitor C11, the second feedback capacitor C12 and the third feedback capacitor C13.
The controller 3 stops generating the enable signal to the chip power supply module 5 after reading the fingerprint information. The chip power supply module 5 stops outputting the voltage signal to the information calculating chip 2 at this time, and the information calculating chip 2 is powered off.
As an alternative embodiment, the input power source connected to the input terminal of the switching power chip U1 includes a first battery pack VBAT1, a second battery pack VBAT2, a first diode D1, and a second diode D2; wherein:
the anode of the first battery pack VBAT1 is connected with the anode of a first diode D1, the anode of the second battery pack VBAT2 is connected with the anode of a second diode D2, the cathode of the first diode D1 is connected with the cathode of a second diode D2, the common end of the first diode D1 is connected with the input end of the switching power supply chip U1, and the cathode of the first battery pack VBAT1 and the cathode of the second battery pack VBAT2 are both grounded.
Specifically, the input power of the switching power chip U1 of the present application is provided by the first battery pack VBAT1 and the second battery pack VBAT2 connected in parallel, and the first battery pack VBAT1 and the second battery pack VBAT2 are identical in structure and each include multiple batteries connected in series. In order to reduce the mutual influence of the first battery pack VBAT1 and the second battery pack VBAT2, the first battery pack VBAT1 and the second battery pack VBAT2 are combined into a circuit through diodes D1 and D2, respectively, to generate VCC, and provide an input power for the switching power supply chip U1.
As an alternative embodiment, the input power supply further includes a zener diode D3 and a first capacitor C1; wherein:
the cathode of the zener diode D3 is connected to the first end of the first capacitor C1, the common terminal is connected to the input terminal of the switching power supply chip U1, and the anode of the zener diode D3 and the second terminal of the first capacitor C1 are both grounded.
Specifically, the zener diode D3 is used to stabilize the input power voltage of the switching power chip U1, and the first capacitor C1 is used to filter the interference signal in the input power of the switching power chip U1, so as to provide a stable input power for the switching power chip U1.
More specifically, the switching power supply chip of the present application may be a chip as shown in fig. 3, where RUN is a control terminal of the switching power supply chip, and is connected to a resistor R1 for current limiting; SW is the power output end of the switching power supply chip; FB is a feedback end of the power supply output end; VIN is the input end of the switching power supply chip; GND is the grounding end of the switching power supply chip.
Referring to fig. 4, fig. 4 is a schematic structural diagram of a bluetooth module according to the present invention.
As an alternative embodiment, the bluetooth module is specifically a bluetooth module of an EMB1061 model.
Specifically, the EMB1061 is adopted as a bluetooth module in the present application, as shown in fig. 4, the structure is simple.
Referring to fig. 5, fig. 5 is a schematic structural diagram of an acquisition and detection module according to the present invention.
As an alternative embodiment, the acquisition detection module 4 includes:
the touch detection chip U2, of which the detection end is connected with the fingerprint collection module 1 and the output end is connected with the controller 3, is used for outputting a high level signal to the controller 3 when detecting that the fingerprint collection module 1 generates a rising edge signal, so as to inform the controller 3 to read fingerprint information from the fingerprint collection module 1.
Specifically, the acquisition detection module 4 of the present application may select a touch detection chip U2, and its working principle is:
when the user finger does not touch the fingerprint acquisition module 1, the fingerprint acquisition module 1 does not generate a touch signal, that is, the fingerprint acquisition module 1 outputs a low-level signal to the detection end of the touch detection chip U2; when a user touches the fingerprint acquisition module 1 with a finger, the fingerprint acquisition module 1 generates a touch signal, that is, the fingerprint acquisition module 1 outputs a high-level signal to the detection end of the touch detection chip U2. The touch detection chip U2 outputs a high level signal to the controller 3 when detecting that the fingerprint acquisition module 1 generates a rising edge signal, so as to inform the controller 3 to read fingerprint information from the fingerprint acquisition module 1.
It should be noted that, the acquisition detection module 4 of the present application is still in a power-on state when the device is in a standby state, but the power consumption of the acquisition detection module is much smaller than that of the information calculation chip 2.
As an optional embodiment, the acquisition detection module 4 further includes a pull-down resistor R4 and a transient suppression diode D4; wherein:
the first end of the pull-down resistor R4 is connected with the first end of the TVS diode D4, the common end of the pull-down resistor R3578 is connected to the detection end of the touch detection chip U2, and the second end of the pull-down resistor R4 and the second end of the TVS diode D4 are both grounded.
Further, considering that an interference signal exists on a connection line between the touch detection chip U2 and the fingerprint acquisition module 1, and the signal value of the interference signal is mostly lower than that of the touch signal generated by the fingerprint acquisition module 1, but the false detection may also be caused by the touch detection chip U2, that is, when the user finger does not touch the fingerprint acquisition module 1, the touch detection chip U2 mistakenly uses the interference signal as the touch signal generated by the fingerprint acquisition module 1, so in the present application, in order to eliminate the influence of the interference signal, the pull-down resistor R4 is added. The pull-down resistor R4 can directly pull down the interference signal lower than the touch signal, so that the interference signal cannot trigger the touch detection chip U2, thereby preventing the touch detection chip U2 from false detection.
Furthermore, considering that when a user finger touches the fingerprint acquisition module 1, a part of high-voltage static electricity is brought into a connection line between the touch detection chip U2 and the fingerprint acquisition module 1, so as to damage the touch detection chip U2, the application adds the transient suppression diode D4 for suppressing the high-voltage static electricity and protecting the touch detection chip U2.
As an alternative embodiment, the acquisition detection module 4 further includes a second capacitor C2 and a third capacitor C3; wherein:
a first end of the second capacitor C2 is connected to the fingerprint capturing module 1, a first end of the pull-down resistor R4, and a first end of the first transient suppression diode D1, a second end of the second capacitor C2 is connected to the detection end of the touch detection chip U2 and a first end of the third capacitor C3, and a second end of the third capacitor C3 is grounded.
Further, the acquisition detection module 4 of the present application further includes a second capacitor C2 and a third capacitor C3, and the working principle thereof is: the second capacitor C2 is used for pulse signal input by using the characteristic of blocking direct current and alternating current of the second capacitor C2, and the third capacitor C3 plays a role in filtering.
As an alternative embodiment, the collection and detection module 4 further includes a magnetic bead B and a fourth capacitor C4; wherein:
the power supply end of the touch detection chip U2 is connected to the first end of the fourth capacitor C4 and the first end of the magnetic bead B, the second end of the fourth capacitor C4 is grounded, and the second end of the magnetic bead B is connected to a dc power supply.
Further, the input power of the touch detection chip U2 is obtained by filtering the dc power through the magnetic bead B and the capacitor C4, so that the input power of the touch detection chip U2 is more stable.
More specifically, the touch detection chip of the present application may be a chip as shown in fig. 5, where TCH is a detection end of the touch detection chip; OUT is the output end of the touch detection chip, and the output signal of the OUT is output after being limited by a resistor R5; VDD is a power supply end of the touch detection chip; GND is the grounding end of the touch detection chip; the HLD and the OLH are adjusting ends of the touch detection chip, and the pulse width which can be detected by the touch detection chip can be adjusted by changing the resistance values of the resistors R6 and R7 which are connected to the two ends of the touch detection chip, so that the sensitivity of the touch detection chip is adjusted.
The application also provides intelligent lock equipment which comprises any one of the wireless identification fingerprint devices.
For introduction of the intelligent lock device provided in the present application, please refer to the above-mentioned embodiment of the fingerprint wireless identification apparatus, which is not described herein again.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The utility model provides a wireless identification fingerprint device which characterized in that, includes fingerprint collection module, information calculation chip and integrated controller that has bluetooth module, still includes:
the acquisition detection module is respectively connected with the fingerprint acquisition module and the controller and is used for informing the controller to read the fingerprint information from the fingerprint acquisition module when the fingerprint acquisition module is detected to acquire the fingerprint information;
the chip power supply module is respectively connected with the controller and the power supply end of the information calculation chip;
the controller is used for controlling the chip power supply module to supply power to the information computing chip when the fingerprint information is read; after the fingerprint information is read, controlling the chip power supply module to stop supplying power to the information computing chip; after the Bluetooth module is utilized to receive the digital fingerprint information, fingerprint identification is directly carried out according to the digital fingerprint information.
2. The wireless fingerprint identification device of claim 1, wherein the chip power supply module comprises a switching power supply chip, an inductor, a first feedback resistor, a second feedback resistor, a first feedback capacitor, a second feedback capacitor, and a third feedback capacitor; wherein:
the control end of the switching power supply chip is connected with the controller, the power output end of the switching power supply chip is connected with the first end of the inductor, the second end of the inductor is respectively connected with the power supply end of the information calculation chip, the first end of the third feedback capacitor, the first end of the second feedback capacitor, the first end of the first feedback capacitor and the first end of the first feedback resistor, the second end of the third feedback capacitor and the second end of the second feedback capacitor are grounded, the second end of the first feedback capacitor is respectively connected with the second end of the first feedback resistor, the first end of the second feedback resistor and the feedback end of the switching power supply chip, and the second end of the second feedback resistor is grounded;
the controller is specifically used for generating an enable signal when the fingerprint information is read, so that the chip power supply module correspondingly outputs power supply voltage to the information computing chip according to a self feedback voltage value after receiving the enable signal; and stopping generating an enabling signal after the fingerprint information is read, so that the chip power supply module stops outputting power supply voltage to the information computing chip.
3. The fingerprint identification device as claimed in claim 2, wherein the input power source connected to the input terminal of the switching power supply chip comprises a first battery, a second battery, a first diode and a second diode; wherein:
the anode of the first battery pack is connected with the anode of the first diode, the anode of the second battery pack is connected with the anode of the second diode, the cathode of the first diode is connected with the cathode of the second diode, the common end of the first diode is connected with the input end of the switching power supply chip, and the cathode of the first battery pack and the cathode of the second battery pack are both grounded.
4. The fingerprint identification device of claim 3, wherein the input power supply further comprises a zener diode and a first capacitor; wherein:
and the cathode of the voltage stabilizing diode is connected with the first end of the first capacitor, the common end of the voltage stabilizing diode is connected with the input end of the switching power supply chip, and the anode of the voltage stabilizing diode and the second end of the first capacitor are both grounded.
5. The fingerprint device of claim 1, wherein the bluetooth module is a bluetooth module of an EMB1061 model.
6. The wireless fingerprint identification device of claim 1, wherein the acquisition detection module comprises:
the touch detection chip is connected with the fingerprint acquisition module at the detection end and the controller at the output end, and is used for outputting a high-level signal to the controller when detecting that the fingerprint acquisition module generates a rising edge signal so as to inform the controller to read the fingerprint information from the fingerprint acquisition module.
7. The wireless fingerprint identification device of claim 6, wherein the acquisition detection module further comprises a pull-down resistor and a transient suppression diode; wherein:
the first end of the pull-down resistor is connected with the first end of the transient suppression diode, the common end of the pull-down resistor is connected to the detection end of the touch detection chip, and the second end of the pull-down resistor and the second end of the transient suppression diode are both grounded.
8. The wireless fingerprint identification device of claim 7, wherein the capture detection module further comprises a second capacitor and a third capacitor; wherein:
the first end of the second capacitor is connected with the fingerprint acquisition module, the first end of the pull-down resistor and the first end of the transient suppression diode respectively, the second end of the second capacitor is connected with the detection end of the touch detection chip and the first end of the third capacitor respectively, and the second end of the third capacitor is grounded.
9. The wireless fingerprint identification device of claim 8, wherein the collection detection module further comprises a magnetic bead and a fourth capacitor; wherein:
the power end of the touch detection chip is respectively connected with the first end of the fourth capacitor and the first end of the magnetic bead, the second end of the fourth capacitor is grounded, and the second end of the magnetic bead is connected with a direct-current power supply.
10. An intelligent lock device, characterized in that it comprises a wireless identification fingerprint device according to any one of claims 1 to 9.
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| CN201911082293.1A CN110782565A (en) | 2019-11-07 | 2019-11-07 | Wireless identification fingerprint device and intelligent lock equipment |
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Application publication date: 20200211 |