CN107657693B

CN107657693B - Fingerprint identification method for anti-theft door

Info

Publication number: CN107657693B
Application number: CN201710824410.1A
Authority: CN
Inventors: 冉启兰
Original assignee: Jiangsu Ideal Space Decoration Engineering Co Ltd
Current assignee: Jiangsu ideal space Decoration Engineering Co., Ltd
Priority date: 2017-09-13
Filing date: 2017-09-13
Publication date: 2019-12-31
Anticipated expiration: 2037-09-13
Also published as: CN107657693A

Abstract

The invention provides a fingerprint identification method of a security door, which comprises the following steps: and S1, registering and identifying a user, sending an identification request signal to the DSP by the touch screen after the user touches the touch screen, S2, analyzing and judging the user, identifying the fingerprint of the user by the fingerprint identification circuit after the user holds the outer pulling handle, S3, controlling the door lock to work, and controlling the electric push rod to extend to open or close the security door by inserting the electric push rod into the square hole and the square through hole and controlling the first collision block and the second collision block to work cooperatively when the security door is in a locked state and the lock tongue extends into the lock hole of the security door, wherein the outer pulling handle is vertical to the fixed handle at the moment.

Description

Fingerprint identification method for anti-theft door

Technical Field

The invention relates to the field of electronic circuit control, in particular to a fingerprint identification method of a security door.

Background

Along with the continuous progress of science and technology, it is more and more common to use in community security protection system through biological identification technology, wherein especially carry out identification to burglary-resisting door or family system of registering one's residence through fingerprint identification technology to save time raises the efficiency, but the technical problem who exists among the prior art includes:

1. the identity identification process cannot be accurately judged, and the response time is long;

2. the working method can not generate linkage effect with the structure and can not sensitively control the door lock.

Disclosure of Invention

The invention aims to at least solve the technical problems in the prior art, and particularly innovatively provides a fingerprint identification method of a security door.

In order to achieve the above object, the present invention provides a fingerprint identification method for a security door, comprising the steps of:

s1, registering and identifying the user, after the user touches the touch screen, the touch screen sends an identification request signal to the DSP, after the DSP acquires the identification request signal, the working signal that the LED light is lightened is sent to the backlight component, after the light is lightened, the sensor acquisition array identifies the user fingerprint, the identification data is compared with the historical data of the fingerprint image buffer, the body outline information and the facial feature information of the user are simultaneously acquired, if the comparison with the information of the fingerprint image buffer and the remote control center is successful, S2 is executed, if the fingerprint image buffer does not have the fingerprint information, the user is prompted to register through the loudspeaker voice, meanwhile, the new user information is sent to the remote control center through the network for identity authentication, after the authentication is passed, the fingerprint information is recorded into the fingerprint image buffer, for the safety and high efficiency of the authentication, inputting the same fingerprint for a plurality of times, wherein the input fingerprint comprises a central part of the same fingerprint and an edge part of the same fingerprint, and after the input is successful, a loudspeaker prompts that the input is successful and uploads the input to a remote control center;

the camera collects body contour information and face feature information of a user, firstly collects the body contour information of the user, obtains the body contour information of the user, photographs and stores the height and body proportion, uploads the height and body proportion to a remote control center, collects the face feature information, respectively collects and stores the left face feature information, the right face feature information, the head raising feature information and the head lowering feature information, and uploads the left face feature information, the right face feature information, the head raising feature information and the head lowering feature information to the remote control center;

s2, analyzing and judging a user, wherein the user holds the outer pull handle, the fingerprint of the user is identified by the fingerprint identification circuit, the anti-theft door is opened by applying force to the finger, the fingerprint area identified by the fingerprint identification circuit comprises the outermost joint part, the outermost joint and the middle joint or the middle joint of the three joints of the finger, when the comparison is carried out through the fingerprint image buffer, the stored fingerprint information is not completely consistent with the fingerprint information acquired by the fingerprint identification circuit in real time, after the central part of the same fingerprint and the edge part of the same fingerprint are spliced and fused, the fingerprint information of the fingerprint image buffer is compared with the fingerprint information acquired in real time line by line, after the verification is successful, a loudspeaker gives a prompt, and the step driving circuit of the anti-theft door is controlled to work;

acquiring identity information of a user through a camera, wherein the identity information comprises body profile information and face feature information of the user, the camera acquires the body profile information of the user and then sends the body profile information to a remote control center for history information comparison, identity judgment is carried out according to height and body proportion, face feature information comparison is carried out after verification is successful, when face feature information comparison is carried out, firstly, user mouth opening information verification is carried out, then user blink information verification is carried out, and S3 is carried out after the body profile information, the mouth opening information and the blink information of the user are verified simultaneously and successfully;

s3, controlling the door lock to work, when the anti-theft door is in a locked state, the lock tongue extends into the lock hole of the anti-theft door, the outer pulling handle is perpendicular to the fixed handle, the electric push rod is inserted into the square hole and the square through hole, under the condition, the outer pulling handle cannot be pulled, after the fingerprint identification circuit verifies that the fingerprint is successful, the controller sends a driving signal, the first push rod driving circuit controls the first stepping motor to move, so as to drive the push rod of the first electric push rod to extend, so that the circular shaft section of the first electric push rod is matched with the square hole and the square through hole, then the outer pulling handle is pulled, meanwhile, the outer pulling handle moves outwards to trigger the second position sensor of the second collision block, the second position sensor sends a displacement signal to the controller, so as to control the second push rod driving circuit, the second push rod driving circuit controls the second stepping motor to retract the lock tongue, so as to open the anti-theft door, when the outer pulling handle rotates to be vertical to the fixed handle, the inner side surface of the handle part is in close contact with the outer side surface of the foam block; the first collision block is contacted with the first position sensor, a detection signal of the first position sensor is fed back to the controller, the controller controls the push rod of the first electric push rod to retract, so that the square shaft section is matched with the square hole and the square through hole, the outer trigger handle cannot be pulled in the state, meanwhile, the outer trigger handle triggers the second collision block to be contacted with the second position sensor, the second position sensor sends a signal to the controller, the controller sends an instruction to the second stepping motor, the second stepping motor controls the push rod of the second electric push rod to extend, and the spring bolt M1 is pushed to extend through the return spring;

when a person passes through the security door, the security door is pulled inwards, the lock tongue can extend into a lock hole of the security door, and a return spring provides pretightening force, so that the security door is closed; the inner side surface of the anti-theft door is matched with an inner handle in a rotating way, a rotating gear is fixedly sleeved on the inner handle, the rotating gear is meshed with a rack on a lock tongue, and the structure of the anti-theft door is the same as that of the existing structure; when an indoor person rotates the inner handle, the lock tongue is driven by the gear rack to overcome the elastic force of the return spring to retract, so that the anti-theft door is opened from the indoor; after the person releases the inner handle, the lock tongue extends out under the elastic force of the return spring.

Preferably, the fingerprint identification method for a security door further includes: the remote control center monitors instruction information of opening the security door by a user in real time, detects abnormal states and sends an alarm instruction.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

the accuracy of identity recognition is realized through the working method, and the response time is reduced; the working method and the structure generate a real-time linkage effect, sensitively control the door lock of the security door, control the electric push rod to move in a stretching way through the controller, and control the first touch block, the second touch block, the first electric push rod and the second electric push rod respectively through the controller, so that the first touch block, the second touch block, the first electric push rod and the second electric push rod can work cooperatively, smooth unlocking is guaranteed, the movement of an internal mechanical structure is controlled, the door opening process is completed, and the safety of entering a home is guaranteed.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic diagram of the present invention.

Fig. 2 is a sectional view taken along line a-a of fig. 1.

Fig. 3 is a sectional view taken along line B-B of fig. 1.

FIG. 4 is a schematic representation of a foam block of the present invention.

Fig. 5 is a schematic view of the locking shaft of fig. 2.

FIG. 6 is a circuit schematic of the present invention;

FIG. 7 is a schematic diagram of a fingerprint recognition circuit of the present invention;

FIG. 8 is a schematic diagram of an AD-converted piezoelectric film sensor circuit in accordance with the present invention;

FIG. 9 is a schematic diagram of a sensor chip layout according to the present invention;

FIG. 10 is a schematic diagram of a putter driver circuit in accordance with the present invention;

FIG. 11 is another circuit schematic of the present invention;

FIG. 12 is a schematic diagram of the speaker circuit of the present invention;

FIG. 13 is a flow chart of the method of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.

In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be interpreted broadly, and may be, for example, a mechanical connection or an electrical connection, a communication between two elements, a direct connection, or an indirect connection via an intermediate medium, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.

As shown in figures 1-5, a fingerprint lock subassembly of intelligence house burglary-resisting door, includes fingerprint identification ware 1, fingerprint identification circuit 2 and discernment glass piece 3, wherein discernment glass piece 3 supplies to point to contact, and discernment glass piece 3 cooperatees with fingerprint identification ware 1 to by the analytic discernment fingerprint of fingerprint identification circuit 2. In the present application, how the fingerprint identifier 1, the fingerprint identification circuit 2, and the identification glass sheet 3 cooperate with each other, so that the technology of correctly determining and identifying a fingerprint is a conventional technology, well known to those skilled in the art, and is not the invention of the present application, and is not described herein again. Preferably, the identification glass piece 3 is adjusted to a square block having a length and a width of 2mm and a thickness of 1-2mm, so that the identification glass piece 3 can be prevented from being damaged due to long-term rotation.

The scheme also comprises an outer pulling handle 4 and a fixed handle 5, wherein the outer pulling handle 4 and the fixed handle 5 are both steel castings, so that the manual damage can be prevented. Wherein, the external handle 4 is a hollow structure and is formed by directly connecting a connecting part 4a and a handle part 4 b. The thickness of the connecting part 4a is smaller than that of the handle part 4b, so that a step surface is formed, and the effect of limiting the outer pull handle 4 in the return process is achieved. The fixed handle 5 is a hollow structure, and the inner side surface of the fixed handle 5 is welded and fixed with the outer side surface of the anti-theft door M when being installed. The opening at the outer end of the fixed handle 5 is sealed by a positioning plate 6, and the positioning plate 6 is provided with a U-shaped notch with a through left end and a through right end, so that the outer spanner handle 4 can be abducted when rotating.

In the connecting portion 4a of the outer handle 4 that pulls inserted the U-shaped breach, a quad slit has all been opened to the upper and lower surface of this connecting portion 4a inserted part left end portion, and it has square via hole to correspond to open on the upper and lower side of U-shaped breach, and this quad slit and square via hole are passed simultaneously to locking axle 7. Locking axle 7 is two segmentation stepped shafts to form by square shaft section 7a on upper portion and the circle shaft section 7b coaxial coupling of lower part, the circumference at circle shaft section 7b place is square shaft section 7 a's inscribed circle, and square shaft section 7 a's size and quad slit and square via hole looks adaptation. The upper end of the square shaft section 7a is coaxially connected with the lower end of a push rod of a first electric push rod 8, the first electric push rod 8 is vertically installed on the top surface of the fixed handle 5, and a signal cable of a first controller 9 of the first electric push rod 8 extends into the outer pulling handle 4 after passing through a wire passing hole 7c in the locking shaft 7 and is connected with a signal output end of the fingerprint identification circuit 2. A first collision block 50 is fixedly arranged on the inner side surface of the connecting part 4a, the first collision block is matched with a first position sensor 51, a detection signal of the first position sensor 51 is fed back to the first controller 9, and the first controller 9 controls the extension of the push rod of the first electric push rod 8. After the fingerprint identification circuit 2 correctly identified the fingerprint, transmit identification signal for first controller 9 to control the push rod of first electric putter 8 to retract, make the circular shaft section 7b and quad slit and square via hole cooperation, under this state, the people can outwards pull external wrench handle 4. When the first collision block 50 contacts with the first position sensor 51, a detection signal of the first position sensor 51 is fed back to the first controller 9, the first controller 9 controls the push rod of the first electric push rod 8 to extend out, so that the square shaft section 7a is matched with the square hole and the square through hole, and in this state, a person cannot pull the outer pulling handle 4 outwards.

As shown in fig. 1-4, a second stop 52 is further disposed on the inner side of the connecting portion 4a, the second stop 52 is engaged with a second position sensor 53 on the positioning plate 6, a detection signal of the second position sensor 53 is fed back to a second controller 54, and the second controller 54 controls the extension and retraction of a second electric push rod 55. The second electric push rod 55 is installed in the security door M, the push rod of the second electric push rod 55 is fixed with one end of a return spring M2, the other end of the return spring M2 is fixed with the bolt M1, and the bolt M1 is in sliding fit with a sliding hole on the security door M. When a person pulls the outer pulling handle 4 outwards, the second collision block 52 is separated from the second position sensor 53, a detection signal of the second position sensor 53 is fed back to the second controller 54, the second controller 54 controls the push rod of the second electric push rod 55 to retract, and therefore the lock bolt M1 is pulled to retract through the return spring M2, the lock bolt M1 is withdrawn from the lock hole of the anti-theft door, and unlocking is achieved. When the outer trigger handle 4 is returned inward until the second latch 52 comes into contact with the second position sensor 53, the push rod of the second electric push rod 55 is extended and pushes the latch bolt M1 to be extended by the return spring M2. The right part of the inner side surface of the connecting part 4a is fixed with one end of a tension spring 11, the other end of the tension spring 11 is fixed with the connecting edge of a U-shaped positioning part 12, and the opening of the U-shaped positioning part 12 faces outwards.

As shown in fig. 1 to 4, the inner side surface of the handle portion 4b is formed by connecting an arc-shaped surface with an inward convex upper portion and a vertical surface with a lower portion, the identification glass sheet 3 is embedded in the mounting hole on the vertical surface, the identification glass sheet 3 is in a vertical state, and the inner side surface of the identification glass sheet 3 is flush with the inner hole opening of the mounting hole. Fingerprint identification ware 1 and fingerprint identification circuit 2 fixed mounting are in the cavity of handle portion 4b, and fingerprint identification ware 1 is located discernment glass piece 3 outsides to just to 3 positions of discernment glass piece. In addition, the inner side surface of the security door M is provided with a power supply, the power supply can be supplied by commercial power or/and a storage battery, and the power supply supplies power to the power consumption parts such as the fingerprint identifier 1, the fingerprint identification circuit 2, the first electric push rod 8, the first controller 9, the first position sensor 51, the second position sensor 53, the second controller 54 and the second electric push rod 55, and the power supply mode is the existing structure and is not described herein.

A foam block 13 is detachably mounted in the opening of the U-shaped positioning member 12, and the mounting mode can be a plug-in mode, so that the used foam block 13 can be conveniently taken down and cleaned, and a clean foam block 13 can be conveniently inserted after cleaning. The outer side surface of the foam block 13 is an inclined surface, the right end of the outer side surface of the foam block 13 is close to the outer side surface of the antitheft door M, the left end of the outer side surface of the foam block 13 is far away from the outer side surface of the antitheft door M, and the shape of the outer side surface of the foam block 13 is matched with the inner side surface of the handle part 4 b. In the present case, the outer side of the foam block 13 forms an angle α with the security door M in the free state, the angle α having a value of 15 ° to 30 °, and preferably being 20 °, 25 ° or 28 °. When the outer trigger handle 4 is rotated inwards to reset under the action of the tension spring 11, the inner side surface of the handle part 4b presses the outer side surface of the foam block 13; when the outer trigger handle 4 is rotated to be perpendicular to the fixed handle 5, the inner side surface of the handle portion 4b is in close contact with the outer side surface of the foam block 13.

The working principle of the scheme is as follows:

when the security door M is in a locked state, the second collision block 52 contacts the second position sensor 53 in this state, the push rod of the second electric push rod 55 extends, and the bolt M1 extends into the lock hole of the security door by the elastic force of M2; at this time, the external pulling handle 4 is perpendicular to the fixed handle 5, the first position sensor 51 contacts with the first collision block 50, the first electric push rod 8 is pushed out and extended, and the square shaft section 7a is inserted into the square hole and the square through hole, so that the external pulling handle 4 cannot be pulled.

When an outdoor person needs to open the anti-theft door to enter a room, fingers of the person stretch into the handle part 4b, and the finger abdomens of the fingers are in contact with the arc-shaped surface of the handle part 4b, so that the design not only accords with human engineering, but also has good finger abdomen comfort, and the arc-shaped surface of the handle part 4b can prevent dust or water drops from remaining on the identification glass sheet 3 from top to bottom, so that the cleanness of the identification glass sheet 3 is ensured; the finger of one finger contacts the identification glass sheet 3 to identify the fingerprint, and the finger of the finger contacts the vertical surface of the handle portion 4 b. If the fingerprint identification is successful, the fingerprint identification circuit 2 transmits an identification signal to the first controller 9, and the first controller 9 controls the push rod of the first electric push rod 8 to retract, so that the circular shaft section 7b is in running fit with the square hole and the square through hole, and the external pulling handle 4 can be pulled under the condition. At this time, a person directly pulls the outer pulling handle 4 outwards, the outer pulling handle 4 rotates outwards around the locking shaft 7, the pulling force of the tension spring 11 needs to be overcome in the process of pulling the outer pulling handle 4 outwards, and the second collision block 52 is separated from the contact with the second position sensor 53, so that the push rod of the second electric push rod 55 retracts, the lock tongue M1 is pulled to retract through the return spring M2, the lock tongue M1 is withdrawn from the lock hole of the security door, the unlocking is realized, and the security door can be opened.

After the anti-theft door is opened, the fingers of a person are pulled out from the upper side, the outer pulling handle 4 is rotated inwards to reset under the action of the tension spring 11, and in the process of rotating inwards to reset the outer pulling handle 4, the inner side surface of the handle part 4b presses the outer side surface of the foam block 13; when the outer trigger handle 4 is rotated to be perpendicular to the fixed handle 5, the inner side surface of the handle portion 4b is in close contact with the outer side surface of the foam block 13. When the outer pulling handle 4 rotates to be vertical to the fixed handle 5, the first collision block 50 is in contact with the first position sensor 51, a detection signal of the first position sensor 51 is fed back to the first controller 9, and the first controller 9 controls the extension of the push rod of the first electric push rod 8, so that the square shaft section 7a is matched with the square hole and the square through hole, and the outer pulling handle 4 cannot be pulled in the state for a person to open the anti-theft door outdoors next time. Meanwhile, the second contact piece 52 contacts with the second position sensor 53, and transmits a detection signal to the second controller 54, the second controller 54 controls the extension of the push rod of the second electric push rod 55, and the lock tongue M1 is pushed to extend by the return spring M2, so that the locking is realized.

After a person passes through the security door M, the security door M can be pulled inwards, the bolt M1 can extend into a lock hole of the security door, and pretightening force is provided by the return spring M2, so that the security door M is closed. The inner side surface of the anti-theft door M is matched with an inner handle in a rotating mode, a rotating gear is fixedly sleeved on the inner handle and meshed with a rack on a bolt M1, and the structure of the anti-theft door M is the same as that of the existing structure. When an indoor person rotates the inner handle, the bolt M1 can be driven by the rack and pinion to overcome the elastic force of the return spring M2 to retract, so that the security door M is opened from the indoor; when the person releases the inner handle, the bolt M1 extends under the elastic force of the return spring M2.

In the scheme, the arrangement of the identification glass sheet is adjusted from a fixed type to a movable type and is adjusted from an inclined exposed type to a vertical concealed type, so that the defect that dust is easy to deposit in the traditional structure can be fundamentally avoided; in addition, the inner side surface of the handle part and the outer side surface of the foam block are matched with each other, so that shock absorption and buffering can be effectively realized, the fingerprint identifier, a fingerprint identification circuit and an identification glass sheet are prevented from being damaged, the inner side surface of the handle part and the identification glass sheet can be automatically cleaned, manual participation and interference are not needed in the cleaning process, the clean inner side surface of the handle part and the clean identification glass sheet can be protected in all directions, the pollution to the identification glass sheet is avoided, the combination designs are organically matched to ensure the cleanness of the identification glass sheet, and the success rate of fingerprint identification is improved; meanwhile, the first electric push rod is organically matched with the locking shaft, the square hole and the square through hole, the locking and unlocking states of the outer pulling handle can be smoothly and conveniently switched, the second collision block, the second position sensor and the second electric push rod are organically matched, the extension and retraction of the lock tongue can be effectively realized, and the two hidden position sensor assemblies can prevent damage of a bad person and effectively drive the lock tongue to be locked back, so that the anti-theft door is opened; in addition, the operation of identifying the fingerprint and opening the security door can be completed only by holding the handle part with fingers, the operation is simple, convenient and labor-saving, the defect of inconvenience in operation caused by the fact that the operation of identifying the fingerprint and opening the security door is independent in the prior art is effectively overcome, and the scheme forms an organic whole which is interactive, associative and inseparable. Because the success rate of the fingerprint identification of the scheme is greatly improved, a coded lock and a key backup system can be cancelled, the structure is effectively simplified, the cost is reduced, and the reliability of the security door is also reliable.

As shown in fig. 6-7, the present invention discloses a fingerprint identification method for a security door, comprising: the intelligent terminal signal interaction end is connected with the controller signal interaction end, the controller fingerprint identification signal end is connected with the fingerprint identification circuit signal output end, the controller first position signal receiving end is connected with the first position sensor signal sending end, the first position sensor signal receiving contact is connected with the first collision block, the controller first working signal end is connected with the first electric push rod signal receiving end, the controller second position signal receiving end is connected with the second position sensor signal sending end, the second position sensor signal receiving contact is connected with the second collision block, and the controller second working signal end is connected with the second electric push rod signal receiving end;

the fingerprint identification circuit includes: the touch screen is arranged at the upper end of the sensor acquisition array, the signal sending end of the AD converter is connected with the signal receiving end of the sensor acquisition array, the signal output end of the sensor acquisition array is connected with the signal receiving end of the DSP processor, the working signal end of the backlight assembly is connected with the backlight signal end of the DSP processor, the sensor acquisition array stores acquired information in the fingerprint image buffer through a logic output circuit, and the signal output end of the piezoelectric film sensor is connected with the piezoelectric signal receiving end of the DSP processor; the sensor acquisition arrays are arranged in concentric circles, as shown in fig. 9; fingerprint identification circuit shines user's fingerprint through backlight unit, gather the array by the sensor and acquire fingerprint information, it is for better collection fingerprint information to set up to concentric circles and arrange, acquire fingerprint information through the CCD sensor, whether perception fingerprint is attached to the touch-sensitive screen through piezoelectric film sensor, the analog quantity information who acquires carries out the output through AD converter and converts digital signal transmission to DSP treater, the fingerprint information storage that acquires is in fingerprint image buffer, the AD converter of this application is after the transmission of conversion chip is enlargied, data acquisition is accurate stable, after carrying out stable output through DC-DC converter, transmit to the treater and carry out data processing.

As shown in fig. 8, the AD converter includes: the voltage input end is connected with one end of a 9 th resistor, the other end of the 9 th resistor is respectively connected with one end of a 10 th resistor and the negative input end of a 2 nd operational amplifier, one end of the 10 th resistor is also connected with one end of a 6 th capacitor, the other end of the 6 th capacitor is respectively connected with the other end of the 10 th resistor and the output end of the 2 nd operational amplifier, the positive input end of the 2 nd operational amplifier is respectively connected with one end of a 5 th capacitor and one end of a 3 rd resistor, the other end of the 5 th capacitor is respectively connected with one end of a 1 st capacitor and the other end of a 3 rd resistor, the other end of the 1 st resistor is respectively connected with the other end of the 1 st capacitor and one end of the 2 nd resistor, the other end of the 1 st capacitor is also connected with the positive input end of the 1 st operational amplifier, the other end of the 2 nd resistor is, the output end of the 1 st operational amplifier is respectively connected with one end of a 5 th resistor and one end of a 7 th resistor, the other end of the 5 th resistor is respectively connected with one end of a 3 rd capacitor and the positive power input end of a second AD conversion chip, the other end of the 7 th resistor is respectively connected with the negative input end of the 1 st operational amplifier and one end of the 8 th resistor, the other end of the 8 th resistor is respectively connected with the output end of the 2 nd operational amplifier and one end of the 6 th resistor, the other end of the 6 th resistor is respectively connected with the negative power input end of the second AD conversion chip and one end of the 4 th capacitor, the other end of the 4 th capacitor is respectively connected with the other end of the 3 rd capacitor and grounded, the output end of the first AD conversion chip is connected with the reference signal end of the second AD conversion chip, the voltage output end of the second AD conversion chip is, the other end of the 12 th resistor is connected with a bus input end of the DC-DC converter, a second output end of the second AD conversion chip is connected with one end of the 11 th resistor, the other end of the 11 th resistor is connected with a reference signal input end of the DC-DC converter, a power supply input end of the converter is respectively connected with one end of a 7 th capacitor and one end of a 14 th resistor, the other end of the 7 th capacitor and the other end of the 14 th resistor are connected with a power supply end of the DC-DC converter, a 12V power supply input end is respectively connected with one end of a 15 th resistor and one end of an 18 th resistor, one end of the 18 th resistor is also connected with one end of a 16 th resistor, the other end of the 16 th resistor is connected with a first switching signal end of the DC-DC converter, the other end of the 15 th resistor is connected with a setting end, the drain electrode of the 1 st transistor is respectively connected with the frequency input end of the DC-DC converter and one end of a 19 th resistor, the other end of the 19 th resistor is connected with one end of an 8 th capacitor, the other end of the 8 th capacitor is grounded, the 12V power input end is also connected with one end of a 2 nd inductor, the other end of the 2 nd inductor is respectively connected with the frequency output end of the DC-DC converter and one end of a 20 th resistor, the other end of the 20 th resistor is connected with one end of a 21 st resistor, and the other end of the 21 st. The grid electrode of the 1 st transistor is connected with one end of the 1 st inductor, the other end of the 1 st inductor is connected with one end of a 9 th capacitor and the grid electrode of the 2 nd transistor respectively, the other end of the 9 th capacitor is connected with a voltage end of an MCU, the drain electrode of the 2 nd transistor is connected with a high level signal end of the MCU, the source electrode of the 2 nd transistor is connected with one end of a 22 nd resistor and the grid electrode of the 3 rd transistor respectively, the drain electrode of the 3 rd transistor is connected with a low level signal end of the MCU, the source electrode of the 3 rd transistor is connected with one end of a 23 rd resistor and ground respectively, the other end of the 22 th resistor is connected with the other end of a 23 rd resistor and one end of a 10 th capacitor respectively, one end of the 23 th resistor is connected with the other end of the 10 th capacitor, the source electrode of the 2 nd transistor is also, the drain electrode of the 4 th transistor is respectively connected with one end of a 24 th resistor and the power supply end of the DC-DC converter, the other end of the 24 th resistor is connected with the power supply end of 5V, the grid electrode of the 4 th transistor is respectively connected with one end of a 26 th resistor and one end of a 28 th resistor, the other end of the 25 th resistor is connected with the positive end of a working signal of the DC-DC converter, the other end of the 26 th resistor is connected with the negative end of the working signal of the DC-DC converter, the 28 th resistor is respectively connected with the loading signal end of the DC-DC converter;

as shown in fig. 10, the controller controls the electric putter to move step by step through a putter driving circuit, which includes: the first signal control end of the MCU is respectively connected with one end of a 30 th resistor and one end of a 31 th resistor, the power end of the MCU is connected with one end of the 29 th resistor, the other end of the 29 th resistor is respectively connected with the other end of the 30 th resistor and the cathode of a 2 nd light-emitting diode, the anode of the 2 nd light-emitting diode is connected with the cathode of a 3 rd light-emitting diode, the anode of the 3 rd light-emitting diode is respectively connected with one end of a 32 th resistor and the cathode of a 4 th diode, the other end of the 31 th resistor is connected with the anode input end of a 3 rd operational amplifier, the anode of the 4 th diode is connected with the cathode input end of the 3 rd operational amplifier, the output end of the 3 rd operational amplifier is respectively connected with one end of a 35 th resistor and one end of a 34 th resistor, the other end of the 32 th resistor is respectively connected with, the negative electrode of the 6 th diode is respectively connected with the collector of a 6 th triode and the grid of an 8 th transistor, the drain of the 8 th transistor is connected with the positive electrode of the 6 th diode, the other end of the 37 th resistor is respectively connected with the collector of a 5 th triode and the negative electrode of the 5 th diode, the emitter of the 5 th triode is respectively connected with the positive electrode of the 5 th diode and one end of a 33 th resistor, the other end of the 33 th resistor is respectively connected with the other end of a 34 th resistor and the base of the 5 th triode, the negative electrode of the 5 th diode is also connected with the drain of a 7 th transistor, the source of the 7 th transistor is respectively connected with the positive electrode of the 5 th diode and grounded, the grid of the 7 th transistor is connected with the source of the 8 th transistor, the source of; after the push rod driving circuit obtains the data of the MCU processor and amplifies the signals through the operational amplifier, a driving circuit formed by a transistor and a diode is sent to a stepping driving circuit ULN2003, and a stepping motor is controlled through the stepping driving circuit, so that the accurate displacement of the electric push rod is controlled.

The second signal control end of the MCU is connected with one end of a 38 th resistor, the other end of the 38 th resistor is connected with one end of a 39 th resistor, the other end of the 39 th resistor is connected with the positive input end of a 4 th operational amplifier, the negative input end of the 4 th operational amplifier is respectively connected with the positive electrode of a 7 th diode and one end of an 11 th capacitor, the other end of the 11 th capacitor is connected with the negative input end of a 3 rd operational amplifier, the output end of the 4 th operational amplifier is respectively connected with one end of a 42 th resistor and one end of a 43 th resistor, the negative electrode of the 7 th diode is connected with one end of a 40 th resistor, the other end of the 40 th resistor is respectively connected with one end of a 44 th resistor and a collector of a 10 th triode, the other end of the 42 th resistor is respectively connected with one end of a 41 th resistor, the drain electrode of the 12 th transistor is respectively connected with the positive electrode of a 9 th diode and the emitting electrode of a 10 th triode, the emitting electrode of the 10 th triode is also connected with one end of a 45 th resistor, the other end of the 45 th resistor is respectively connected with the collector electrode of the 9 th triode and the negative electrode of the 8 th diode, the positive electrode of the 8 th diode is respectively connected with the emitting electrode of the 9 th triode and the source electrode of the 11 th transistor, the emitting electrode of the 9 th triode is also connected with the other end of a 41 th resistor, the drain electrode of the 11 th transistor is connected with the negative electrode of the 8 th diode, the grid electrode of the 11 th transistor is respectively connected with the source electrode of the 12 th transistor and;

as shown in fig. 11, the camera signal end of the controller is further connected to the camera signal output end, the speaker signal end of the controller is connected to the speaker signal input end, and the display signal end of the controller is connected to the display lamp signal input end;

as shown in fig. 12, the speaker includes:

the positive end of a commercial power supply is connected with one end of a 17 th capacitor, the other end of the 17 th capacitor is connected with the positive input end of a rectifier bridge, the negative end of the commercial power supply is connected with the negative input end of the rectifier bridge, the first output end of the rectifier bridge is respectively connected with the negative electrode of a 10 th diode and the positive electrode of a 11 th diode, the positive electrode of the 10 th diode is connected with one end of a 46 th resistor, the other end of the 46 th resistor is respectively connected with the negative electrode of the 11 th diode and one end of a 12 th capacitor, the other end of the 12 th capacitor is respectively connected with the positive electrode of the 11 th diode and the ground, the other end of the 46 th resistor is also respectively connected with the second output end of the rectifier bridge and the positive electrode of a 13 th diode, the positive electrode of the 13 th diode is also connected with one end of a 47 th resistor, the other end of the 48 th resistor is connected with a collector of a 13 th triode, an emitter of the 13 th triode is respectively connected with one end of a 49 th resistor and the ground, the other end of the 49 th resistor is connected with a base of a 16 th triode, an emitter of the 16 th triode is grounded, a collector of the 16 th triode is respectively connected with one end of a 50 th resistor and one end of a buzzer, the other end of the 50 th resistor is respectively connected with one end of a 51 th resistor and the other end of the buzzer, the other end of the 51 th resistor is respectively connected with one end of a 5V power supply and one end of a 58 th resistor, the other end of the 58 th resistor is connected with one end of a 59 th resistor, the other end of the 59 th resistor is connected with an emitter of an 18 th triode, a collector of the 18 th triode is grounded, a base of the 18 th triode is connected with one end of a 61 th resistor, the other end, the other end of the 13 th capacitor and the other end of the 14 th capacitor are grounded, the 1 st control switch is connected with a first analog signal end of a buzzer processor, the 2 nd control switch is connected with a second analog signal end of the buzzer processor, one end of the 15 th capacitor and the 16 th capacitor after being connected in parallel is respectively connected with one end of a first control switch and one end of a second control switch, the other end of the 15 th capacitor and the 16 th capacitor after being connected in parallel is respectively connected with a crystal oscillator and a crystal oscillator end of the buzzer processor, the cathode of the 12 th diode is connected with the collector of the 14 th triode, the emitter of the 14 th triode is connected with one end of a 52 th resistor, the other end of the 52 th resistor is connected with the base of the 15 th triode, the collector of the 15 th triode is respectively connected with one end of a 53 th resistor and one end of a second buzzer, the other end of the second buzzer is respectively connected with, the other end of the 55 th resistor is connected with one end of the 56 th resistor, the other end of the 56 th resistor is connected with the emitter of the 17 th triode, the collector of the 17 th triode is connected with the emitter of the 15 th triode, the base of the 17 th triode is connected with one end of the 57 th resistor, and the other end of the 57 th resistor is connected with the second pulse signal end of the buzzer processor. The buzzer is arranged at different positions in a room, so that a user can timely know the verification result of the fingerprint identification circuit when using the fingerprint identification circuit, and a plurality of start-stop switches S1 and S2 are arranged to control and cut off the alarm time, so that better user experience can be brought.

Piezoelectric thin film sensor circuit MAX5973(DC-DC converter), application characteristics:

the chip MAX expands the touch sensitivity without considering extra high-voltage safety requirements. Unlike other driver ICs, the device does not require a high speed waveform during operation. This simplifies the code design of the system or application processor, reduces software load, and speeds haptic response time. The short latency, the time interval from the detection of a finger touch to the response to the touch, is critical to effectively capture the true feel of the press.

The first AD conversion chip is ADR439, the second AD conversion chip is AD7982, where MCU is STM64 series and the step driver is ULN 2003.

As shown in fig. 13, the present invention provides a fingerprint identification method for a security door, comprising the following steps:

acquiring identity information of a user through a camera, wherein the identity information comprises body profile information and face feature information of the user, the camera acquires the body profile information of the user and then sends the body profile information to a remote control center for history information comparison, identity judgment is carried out according to height and body proportion, face feature information comparison is carried out after verification is successful, when face feature information comparison is carried out, firstly, user mouth opening information verification is carried out, then user blink information verification is carried out, and S3 is carried out after the body profile information, the mouth opening information and the blink information are verified simultaneously and successfully;

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A fingerprint identification method of a security door is characterized by comprising the following steps:

s1, registering and identifying a user, after the user touches the touch screen, the touch screen sends an identification request signal to the DSP, after the DSP acquires the identification request signal, the DSP sends a working signal that LED lamplight is lightened to the backlight component, after the lamplight is lightened, the sensor acquisition array identifies the fingerprint of the user, fingerprint comparison is carried out on identification data and historical data of a fingerprint image buffer, body contour information and facial feature information of the user are simultaneously acquired, if the fingerprint comparison of the fingerprint image buffer is consistent and the comparison of the body contour information and the facial feature information of the user in a remote control center is successful, S2 is executed, if the fingerprint image buffer does not have the fingerprint information, the user is prompted to register through the voice of a loudspeaker, meanwhile, new user information is sent to the remote control center through a network for identity authentication, after the authentication is passed, the fingerprint information is recorded into the fingerprint image buffer, in order to ensure that the authentication is safe and efficient, the same fingerprint needs to be input for a plurality of times, wherein the input fingerprint comprises a central part of the same fingerprint and an edge part of the same fingerprint, and after the input is successful, a loudspeaker prompts that the input is successful and uploads the input to a remote control center;

the method comprises the steps that a camera collects body contour information and face feature information of a user, firstly, the body contour information of the user is collected, the body contour information of the user is obtained, the height and body proportion are photographed and stored and uploaded to a remote control center, then, the face feature information is collected, and left face feature information, right face feature information, head raising feature information, head lowering feature information, mouth opening information and blink information are collected and stored respectively and uploaded to the remote control center;

acquiring identity information of a user through a camera, wherein the identity information comprises body profile information and facial feature information of the user, the camera acquires the identity information of the user and then sends the identity information to a remote control center for history information comparison, identity judgment is carried out according to height and body proportion, facial feature information comparison is carried out after verification is successful, when facial feature information comparison is carried out, firstly, user mouth opening information verification is carried out, then user blink information verification is carried out, and S3 is carried out after the body profile information, the mouth opening information and the blink information of the user are verified simultaneously and successfully;

2. The fingerprint recognition method of a security door according to claim 1, further comprising: the remote control center monitors instruction information of opening the security door by a user in real time, detects abnormal states and sends an alarm instruction.