CN210181624U

CN210181624U - Touch all-in-one machine with face recognition function

Info

Publication number: CN210181624U
Application number: CN201920775232.2U
Authority: CN
Inventors: Meixian Zhou; 周美贤; Xiangqing Cen; 岑祥庆; Yonghuai Chen; 陈永淮; Qijun Xie; 谢奇君
Original assignee: Guangzhou Touch-Pie Electronic Technology Co Ltd
Current assignee: Guangzhou Touch-Pie Electronic Technology Co Ltd
Priority date: 2019-05-24
Filing date: 2019-05-24
Publication date: 2020-03-24
Anticipated expiration: 2029-05-24

Abstract

The utility model discloses a touch all-in-one machine with face identification, including touch display screen, frame and face identification module, place in the frame in the touch display screen, face identification module sets up in the top of frame, and the touch display screen embeds there is the main control board, is equipped with singlechip, wireless communication module and power module on the main control board, and face identification module is connected with the singlechip, and the singlechip passes through wireless communication module and is connected with the server, and power module is connected with the singlechip; the power supply module comprises a voltage input end, a first voltage stabilizing diode, a first resistor, a first triode, a first capacitor, a second triode, a second resistor, a first integrated operational amplifier, a third resistor, a second integrated operational amplifier, a fourth resistor, a fifth resistor, a third capacitor and a voltage output end. The utility model discloses circuit structure is comparatively simple, the cost is lower, the security and the reliability of convenient maintenance, circuit are higher.

Description

Touch all-in-one machine with face recognition function

Technical Field

The utility model relates to a touch all-in-one circuit field, in particular to touch all-in-one with face identification.

Background

The touch integrated machine integrates advanced touch screen, industrial control, computer and other technologies, can realize public information inquiry, and can realize specific requirements of fingerprint attendance checking, card swiping, printing and the like by being matched with peripherals such as a fingerprint instrument, a scanner, a card reader, a micro printer and the like.

The touch all-in-one machine is provided with a touch screen, a five-wire resistance screen, a surface acoustic wave screen, an infrared screen, a holographic nano touch film and other excellent touch screens at home and abroad, and can meet the application requirements of users in different regions and places. The touch integrated machine is a touch product which binds a touch screen and related software together and is matched with an outer package for inquiry purposes. The touch control all-in-one machine truly integrates touch and control, and greatly improves the working efficiency of people.

As an input device, the touch integrated machine adopts a touch screen which has the advantages of firmness, durability, high response speed, space saving, easy communication and the like. The user can quickly obtain the information wanted by the user by lightly touching the machine screen with fingers, so that the man-machine interaction is more straightforward. As a high-tech machine, the touch all-in-one machine gradually replaces the position of a pure touch screen, so that a user can really feel the characteristic that the human machine can freely interact.

The power supply part of the traditional touch all-in-one machine uses more components, the circuit structure is complex, the hardware cost is high, and the maintenance is inconvenient. In addition, because the power supply part of the traditional touch integrated machine lacks corresponding circuit protection functions, for example: the safety and reliability of the circuit are poor due to the lack of the current-limiting protection function.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in, to the above-mentioned defect of prior art, provide a circuit structure comparatively simple, the cost is lower, the convenient security of maintaining, circuit and the higher touch all-in-one that has face identification of reliability.

The utility model provides a technical scheme that its technical problem adopted is: the touch all-in-one machine with the face recognition function is constructed and comprises a touch display screen, an outer frame and a face recognition module, wherein the touch display screen is arranged in the outer frame, the face recognition module is arranged at the top end of the outer frame, a main control board is arranged in the touch display screen, a single chip microcomputer, a wireless communication module and a power supply module are arranged on the main control board, the face recognition module is connected with the single chip microcomputer, the single chip microcomputer is connected with a server through the wireless communication module, and the power supply module is connected with the single chip microcomputer;

the power supply module comprises a voltage input end, a first voltage stabilizing diode, a first resistor, a first triode, a first capacitor, a second triode, a second resistor, a first integrated operational amplifier, a third resistor, a second integrated operational amplifier, a fourth resistor, a fifth resistor, a third capacitor and a voltage output end, wherein the voltage input end is respectively connected with the cathode of the first voltage stabilizing diode and one end of the first resistor, the anode of the first voltage stabilizing diode is grounded, the other end of the first resistor is connected with the collector of the first triode, the base of the first triode is connected with one end of the first capacitor, the other end of the first capacitor is respectively connected with one end of the second capacitor and the emitter of the second triode, the other end of the second capacitor is grounded, and the emitter of the first triode is respectively connected with the collector of the second triode, the emitter of the first triode, One end of a second resistor, an output end of a second integrated operational amplifier, one end of a third capacitor and a voltage output end are connected, the other end of the second resistor is connected with a non-inverting input end of the first integrated operational amplifier, an inverting input end of the first integrated operational amplifier is grounded through the third resistor, the non-inverting input end of the second integrated operational amplifier is grounded through the fourth resistor, the inverting input end of the second integrated operational amplifier is respectively connected with the other end of the third capacitor and one end of a fifth resistor, the other end of the fifth resistor is connected with a base electrode of the second triode, and the resistance value of the sixth resistor is 42k omega.

In the touch all-in-one machine with face recognition, power module still includes fourth electric capacity, the one end of fourth electric capacity with the projecting pole of first triode is connected, the other end of fourth electric capacity with the collecting electrode of second triode is connected, the capacitance value of fourth electric capacity is 290 pF.

In the touch integrated machine with face recognition, the power module further comprises a second diode, an anode of the second diode is connected with one end of the second resistor, a cathode of the second diode is connected with an output end of the second integrated operational amplifier, and a model of the second diode is E-562.

In the touch integrated machine with face recognition, the first triode is an NPN-type triode.

In the touch integrated machine with face recognition, the second triode is an NPN-type triode.

In the touch all-in-one machine with face recognition, wireless communication module is bluetooth module, wiFi module, GSM module, GPRS module, CDMA2000 module, WCDMA module, TD-SCDMA module, Zigbee module or loRa module.

Implement the utility model discloses a touch all-in-one with face identification has following beneficial effect: the touch display screen is internally provided with a main control board, and the main control board is provided with a singlechip, a wireless communication module and a power supply module; the power module includes voltage input end, first zener diode, first resistance, first triode, first electric capacity, the second triode, the second resistance, first integrated operational amplifier, the third resistance, the integrated operational amplifier of second, the fourth resistance, the fifth resistance, third electric capacity and voltage output end, this power module compares with the power supply part of traditional touch all-in-one, the components and parts that its used are less, owing to saved some components and parts, can reduce the hardware cost like this, in addition, the sixth resistance is used for carrying out current-limiting protection, therefore the utility model discloses circuit structure is comparatively simple, the cost is lower, convenient maintenance, the security and the reliability of circuit are higher.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an embodiment of the touch integrated machine with face recognition of the present invention;

fig. 2 is a schematic structural diagram of the main control board in the embodiment;

fig. 3 is a schematic circuit diagram of the power supply module in the embodiment.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model discloses in the touch all-in-one machine embodiment with face identification, its touch all-in-one machine's that has face identification structure schematic diagram is shown in FIG. 1. In fig. 1, the touch all-in-one machine with face recognition comprises a touch display screen 1, an outer frame 2 and a face recognition module 3, wherein the touch display screen 1 is arranged in the outer frame 2, the face recognition module 3 is arranged on the top end of the outer frame 2, and a main control board is arranged in the touch display screen 1.

Fig. 2 is a schematic structural diagram of the main control board in this embodiment, in fig. 2, a single chip microcomputer 41, a wireless communication module 42 and a power supply module 43 are arranged on the main control board, the face recognition module 3 is connected with the single chip microcomputer 41, the single chip microcomputer 41 is connected with a server through the wireless communication module 42, and the power supply module 43 is connected with the single chip microcomputer 41 and used for supplying power to the single chip microcomputer 41.

In this embodiment, the server stores face information data of related personnel in advance, when the personnel want to inquire related information of the personnel, the face recognition module 3 captures facial features and transmits the facial features to the single chip microcomputer 41, the single chip microcomputer 41 transmits the facial features to the server through the wireless communication module 42, after the server receives the facial features, the facial features are compared with the face information data stored in advance, when the comparison is successful, the server displays information of the personnel corresponding to the facial features through the touch display screen 1, and the corresponding personnel can also confirm or print the inquired information, so that convenience in information inquiry is provided.

The utility model discloses a facial feature of personnel is picked up to face identification module 3, and then transfers the information that corresponds with it from the server and supply it to look over, confirm or print to the staff has been facilitated and relevant information has been looked over.

In this embodiment, the wireless communication module 42 is a bluetooth module, a WiFi module, a GSM module, a GPRS module, a CDMA2000 module, a WCDMA module, a TD-SCDMA module, a Zigbee module, or a LoRa module. Through setting up multiple wireless communication mode, not only can increase wireless communication mode's flexibility, can also satisfy the demand of different users and different occasions. Especially, when adopting the loRa module, its communication distance is far away, and communication performance is comparatively stable, is applicable to the occasion that requires highly to communication quality.

Fig. 3 is a schematic circuit diagram of a power module in this embodiment, in fig. 3, the power module 43 includes a voltage input terminal Vin, a first zener diode D1, a first resistor R1, a first transistor Q1, a first capacitor C1, a second capacitor C2, a second transistor Q2, a second resistor R2, a first integrated operational amplifier a1, a third resistor R3, a second integrated operational amplifier a2, a fourth resistor R4, a fifth resistor R5, a third capacitor C3, and a voltage output terminal Vo, the voltage input terminal Vin is connected to a cathode of the first zener diode D1 and one end of the first resistor R1, an anode of the first zener diode D1 is grounded, the other end of the first resistor R1 is connected to a collector of the first transistor Q1, a base of the first transistor Q1 is connected to one end of the first capacitor C1, the other end of the first capacitor C1 is connected to an emitter of the second capacitor C67 2 and the emitter 2 of the second capacitor C2, the other end of the second capacitor C2 is grounded, the emitter of the first triode Q1 is connected with the collector of the second triode Q2, one end of the second resistor R2, the output end of the second integrated operational amplifier a2, one end of the third capacitor C3 and the voltage output end Vo respectively, the other end of the second resistor R2 is connected with the non-inverting input end of the first integrated operational amplifier a1, the inverting input end of the first integrated operational amplifier a1 is grounded through the third resistor R3, the non-inverting input end of the second integrated operational amplifier a2 is grounded through the fourth resistor R4, the inverting input end of the second integrated operational amplifier a2 is connected with the other end of the third capacitor C3 and one end of the fifth resistor R5 respectively, and the other end of the fifth resistor R5 is connected with the base of the second triode Q2.

Compared with the power supply part of the traditional touch all-in-one machine, the power supply module 43 has the advantages of fewer used components, simpler circuit structure and convenience in maintenance, and can reduce the hardware cost due to the fact that some components are saved. In addition, the sixth resistor R6 is a current-limiting resistor, and is used for current-limiting protection of the emitter current of the first transistor Q1, and the principle of the current-limiting protection of the sixth resistor R6 is as follows: when the emitter current of first triode Q1 is great, can reduce the size of the emitter current of first triode Q1 through this sixth resistance R6, make it keep at normal operating condition, and be unlikely to because of the too big components and parts that lead to in the burning out circuit of electric current, consequently the utility model discloses the security and the reliability of circuit are higher.

It should be noted that, in the present embodiment, the resistance of the sixth resistor R6 is 42k Ω. Of course, in practical applications, the resistance of the sixth resistor R6 may be adjusted according to specific situations, that is, the resistance of the sixth resistor R6 may be increased or decreased according to specific situations.

In this embodiment, the first transistor Q1 is an NPN transistor, and the second transistor Q2 is an NPN transistor. Of course, in practical applications, the first transistor Q1 and the second transistor Q2 may be PNP transistors, but the circuit structure is changed accordingly.

In this embodiment, the power module 43 further includes a fourth capacitor C4, one end of the fourth capacitor C4 is connected to the emitter of the first transistor Q1, and the other end of the fourth capacitor C4 is connected to the collector of the second transistor Q2. The fourth capacitor C4 is a coupling capacitor for preventing interference between the first transistor Q1 and the second transistor Q2, so as to further enhance the safety and reliability of the circuit.

The effect of the coupling capacitor is: an ac signal is passed from a previous stage to a next stage. The coupling method is also a direct coupling and a transformer coupling method. The direct coupling efficiency is highest, the signal is not distorted, but the adjustment of the front and rear two-stage working points is complex and mutually involved. In order to prevent the working point of the next stage from being affected by the previous stage, the previous stage and the next stage need to be separated in terms of direct current, and meanwhile, the alternating current signal can be smoothly transmitted from the previous stage to the next stage. They can both transmit AC signals and cut off DC, so that the working points of the front and rear stages are not involved. However, the difference is that the phase of the signal is delayed a little when the signal is transmitted by a capacitor, and the high frequency component of the signal is lost a little when the signal is transmitted by a transformer. Generally, a capacitor is commonly used as a coupling element in small signal transmission, and a transformer is commonly used as a coupling element in large signal or strong signal transmission. The utility model discloses in adopt fourth electric capacity C4 as coupling element, can make the operating point of back one-level not receive the influence of preceding one-level like this, that is to say make second triode Q2's operating point not receive first triode Q1's influence. The fourth capacitor C4 is an inter-stage coupling capacitor, and functions to isolate the dc bias circuits of the front and rear stages of the first transistor Q1 and the second transistor Q2, so as to prevent the static operating points of the front and rear stages from affecting each other. The working principle of the method utilizes the working principle of interstage coupling electricity in the prior art, and the mastiff is not described herein.

It should be noted that, in the present embodiment, the capacitance value of the fourth capacitor C4 is 290 pF. Of course, in practical applications, the capacitance value of the fourth capacitor C4 may be adjusted accordingly, that is, the capacitance value of the fourth capacitor C4 may be increased or decreased accordingly.

In this embodiment, the power module 43 further includes a second diode D2, an anode of the second diode D2 is connected to one end of the second resistor R2, and a cathode of the second diode D2 is connected to the output terminal of the second integrated operational amplifier a 2. The second diode D2 is a current-limiting diode for current-limiting protection, and the principle of the current-limiting protection of the second diode D2 is as follows: when the current of the branch where the second diode D2 is located is large, the current of the branch where the second diode D2 is located can be reduced by the second diode D2, so that the branch can be kept in a normal operating state, and the device in the circuit is not burned out due to the large current, so as to further enhance the safety and reliability of the circuit.

It should be noted that in the present embodiment, the second diode D2 is of type E-562. Of course, in practical applications, the second diode D2 may also be another type of diode with similar functions.

In a word, in this embodiment, compared with the power supply part of the conventional touch all-in-one machine, the power supply module 43 has fewer used components, simpler circuit structure and convenient maintenance, and can reduce the hardware cost due to the saving of some components. In addition, a current-limiting resistor is arranged in the power module 43, so that the circuit of the utility model has higher safety and reliability.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A touch all-in-one machine with face recognition is characterized by comprising a touch display screen, an outer frame and a face recognition module, wherein the touch display screen is arranged in the outer frame, the face recognition module is arranged at the top end of the outer frame, a main control board is arranged in the touch display screen, a single chip microcomputer, a wireless communication module and a power module are arranged on the main control board, the face recognition module is connected with the single chip microcomputer, the single chip microcomputer is connected with a server through the wireless communication module, and the power module is connected with the single chip microcomputer;

the power supply module comprises a voltage input end, a first voltage stabilizing diode, a first resistor, a first triode, a first capacitor, a second triode, a second resistor, a first integrated operational amplifier, a third resistor, a second integrated operational amplifier, a fourth resistor, a fifth resistor, a third capacitor and a voltage output end, wherein the voltage input end is respectively connected with the cathode of the first voltage stabilizing diode and one end of the first resistor, the anode of the first voltage stabilizing diode is grounded, the other end of the first resistor is connected with the collector of the first triode, the base of the first triode is connected with one end of the first capacitor, the other end of the first capacitor is respectively connected with one end of the second capacitor and the emitter of the second triode, the other end of the second capacitor is grounded, and the emitter of the first triode is respectively connected with the collector of the second triode, the emitter of the first triode, One end of a second resistor, an output end of a second integrated operational amplifier, one end of a third capacitor and a voltage output end are connected, the other end of the second resistor is connected with a non-inverting input end of the first integrated operational amplifier, an inverting input end of the first integrated operational amplifier is grounded through the third resistor, the non-inverting input end of the second integrated operational amplifier is grounded through the fourth resistor, the inverting input end of the second integrated operational amplifier is respectively connected with the other end of the third capacitor and one end of a fifth resistor, the other end of the fifth resistor is connected with a base electrode of a second triode, and the resistance value of a sixth resistor is 42k omega.

2. The all-in-one touch machine with face recognition function according to claim 1, wherein the power module further comprises a fourth capacitor, one end of the fourth capacitor is connected with an emitter of the first triode, the other end of the fourth capacitor is connected with a collector of the second triode, and a capacitance value of the fourth capacitor is 290 pF.

3. The touch all-in-one machine with the face recognition function according to claim 2, wherein the power supply module further comprises a second diode, an anode of the second diode is connected with one end of the second resistor, a cathode of the second diode is connected with an output end of the second integrated operational amplifier, and the type of the second diode is E-562.

4. The all-in-one touch machine with the face recognition function according to any one of claims 1 to 3, wherein the first triode is an NPN triode.

5. The all-in-one touch machine with the face recognition function according to any one of claims 1 to 3, wherein the second triode is an NPN triode.

6. The touch integrated machine with human face recognition according to any one of claims 1 to 3, wherein the wireless communication module is a Bluetooth module, a WiFi module, a GSM module, a GPRS module, a CDMA2000 module, a WCDMA module, a TD-SCDMA module, a Zigbee module or a LoRa module.