CN107507315B

CN107507315B - Fingerprint control circuit of anti-theft door

Info

Publication number: CN107507315B
Application number: CN201710824431.3A
Authority: CN
Inventors: 冉启兰
Original assignee: Individual
Current assignee: Heilongjiang Zhongxin Door Industry Co ltd
Priority date: 2017-09-13
Filing date: 2017-09-13
Publication date: 2020-03-20
Anticipated expiration: 2037-09-13
Also published as: CN107507315A

Abstract

The invention provides a fingerprint control circuit of a security door, which comprises: 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 circuit belongs to an organic whole, the identity recognition and authentication are completed by mutual matching, the movement of an internal mechanical structure is controlled, the door opening process is completed, and the safety of the user is ensured.

Description

Fingerprint control circuit of anti-theft door

Technical Field

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

Background

Along with the continuous progress of science and technology, it is more and more common at community security protection system to use through biological identification technology, wherein especially carry out identification to entrance guard 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. because the fingerprint lock in the prior art adopts a matrix shape to set the fingerprint identification sensing chip, the fingerprint can not be accurately collected;

2. in the process of performing analog-to-digital conversion on the acquired data, the fingerprint data conversion speed is low, and fingerprints need to be verified for many times, so that the efficiency is low;

3. the bolt of the intelligent door lock is not sensitive to control and cannot be controlled in a linkage manner.

Disclosure of Invention

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

In order to achieve the above object of the present invention, the present invention provides a fingerprint control circuit of 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 a concentric circle shape;

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;

the controller passes through the step-by-step motion of push rod drive circuit control electric putter, push rod drive circuit 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;

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;

the controller camera signal end is also connected with the camera signal output end, the controller loudspeaker signal end is connected with the loudspeaker signal input end, and the controller display signal end is connected with the display lamp signal input end;

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.

Preferably, the first AD conversion chip is an ADR 439.

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

this circuit design passes through fingerprint identification circuit and authenticates user's identity, the position information that touches the piece by controller receiving position sensor, through controller control electric putter concertina movement, and the controller controls respectively that first piece and the second of touching bumps piece and first electric putter and second electric putter, make it can the collaborative work, it is smooth and easy to guarantee to unblank, above-mentioned circuit belongs to an organic whole, mutually support and accomplish the identification authentication, and control inside mechanical structure motion, accomplish the process of opening the door, thereby guarantee the safety of registering one's residence.

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 a speaker circuit 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 7a 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 an opening of the U-shaped positioning piece 12, the foam block 13 can be inserted in a specific mounting mode, so that the used foam block 13 can be conveniently taken down and cleaned, and the cleaned foam block 13 can be conveniently inserted in the U-shaped positioning piece, 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.

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.

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 control circuit of 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.

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.

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 control circuit 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 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 DC-DC converter is respectively connected with one end of the 7 th capacitor and one end of the 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 the 15 th resistor and one end of the 18 th resistor, one end of the 18 th resistor is also connected with one end of the 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;

2. The fingerprint control circuit of claim 1, wherein the first AD conversion chip is ADR 439.