CN209946747U

CN209946747U - Self-service touch query all-in-one

Info

Publication number: CN209946747U
Application number: CN201920860391.2U
Authority: CN
Inventors: 周美贤; 岑祥庆; 陈永淮; 谢奇君
Original assignee: Guangzhou Touch-Pie Electronic Technology Co Ltd
Current assignee: Guangzhou Touch-Pie Electronic Technology Co Ltd
Priority date: 2019-06-06
Filing date: 2019-06-06
Publication date: 2020-01-14
Anticipated expiration: 2029-06-06

Abstract

The utility model discloses a self-service touch inquiry all-in-one machine, including singlechip, card reader, read card module, touch-control display screen, print module, power module and wireless communication module, read card module, touch-control display screen, print module and power module and all be connected with the singlechip, the card reader is connected with the card reader module, the singlechip passes through wireless communication module and connects the server; the power supply module comprises a direct current power supply, a first potentiometer, a first capacitor, a first voltage stabilizing diode, a second resistor, a first triode, a third capacitor, a second triode, a power chip, a relay, a second capacitor and a voltage output end, wherein the direct current power supply is respectively connected with one fixed end of the first potentiometer and one end of a contact of the relay. Implement the utility model discloses a self-service touch inquiry all-in-one has following beneficial effect: the circuit structure is simpler, the cost is lower, convenient maintenance, the security and the reliability of circuit are higher.

Description

Self-service touch query all-in-one

Technical Field

The utility model relates to a touch inquiry all-in-one machine circuit field, in particular to self-service touch inquiry all-in-one.

Background

The Touch query machine (Touch query one machine) is the most convenient, simple, natural and practical man-machine interaction equipment, and integrates computer technology, multimedia technology, sound technology, network technology, industrial modeling art and mechanical manufacturing technology, and is in streamlined integrated design and attractive in modeling. Generally, the touch screen, the display, the computer, the sound equipment, the power supply equipment and the touch cabinet are included, and the power supply input equipment and various network interfaces are also included.

The all-in-one machine can be found in a plurality of occasions such as a house transaction center hall, a business hall, a post business hall, a tax collection hall, city street (city information inquiry), an office building, an airport, a station, a bank, a museum, a library, an exhibition, a hospital, a hotel and the like. Regardless of where you go to work, when the touch query all-in-one machine is encountered, the information needed by you can be presented in front of your eyes only by lightly touching the screen with fingers. If all places needing to ask questions or consult are provided with the touch query all-in-one machine, work and life of people can be facilitated greatly.

Fig. 1 is a schematic circuit diagram of a power supply portion of a conventional touch query all-in-one machine, and as can be seen from fig. 1, the power supply portion of the conventional touch query all-in-one machine has many components, a complex circuit structure, high hardware cost and inconvenient maintenance. In addition, because the power supply part of the traditional touch query all-in-one machine lacks corresponding circuit protection functions, for example: the lack of a signal interference prevention function results in poor safety and reliability of the circuit.

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, a circuit structure is comparatively simple, the cost is lower, the security and the higher self-service touch inquiry all-in-one of reliability of convenient maintenance, circuit are provided.

The utility model provides a technical scheme that its technical problem adopted is: the self-service touch query all-in-one machine is constructed and comprises a single chip microcomputer, a card reader, a card reading module, a touch display screen, a printing module, a power supply module and a wireless communication module, wherein the card reading module, the touch display screen, the printing module and the power supply module are all connected with the single chip microcomputer, the card reader is connected with the card reading module, and the single chip microcomputer is connected with a server through the wireless communication module;

the power supply module comprises a direct current power supply, a first potentiometer, a first capacitor, a first voltage stabilizing diode, a second resistor, a first triode, a third capacitor, a second triode, a power chip, a relay, a second capacitor and a voltage output end, wherein the direct current power supply is respectively connected with one fixed end of the first potentiometer and one end of a contact of the relay, the other end of the contact of the relay is connected with the voltage output end, the sliding end of the first potentiometer is respectively connected with one end of the first capacitor, a power pin of the power chip, an input pin of the power chip, an emitting electrode of the first triode, a cathode of the first voltage stabilizing diode and a cathode of the second voltage stabilizing diode, an anode of the first voltage stabilizing diode is connected with a base electrode of the first triode, and an anode of the second voltage stabilizing diode is respectively connected with one end of the second resistor and a base electrode of the second triode, another stiff end of first potentiometre respectively with the other end of first electric capacity, the other end of second resistance and the projecting pole of second triode are connected and ground connection, the collecting electrode of first triode passes through the third electric capacity with the collecting electrode of second triode is connected, the ground connection pin ground connection of power chip, the output pin of power chip respectively with the one end of second electric capacity and the one end of the coil of relay are connected, the other end of second electric capacity and the other end of the coil of relay all ground connection, the capacitance value of third electric capacity is 390 pF.

In the self-service touch inquiry all-in-one, power module still includes the third diode, the positive pole of third diode respectively with first zener diode 'S negative pole and second zener diode' S negative pole are connected, the negative pole of third diode respectively with power chip 'S power pin, input pin and first triode' S projecting pole are connected, the model of third diode is S-152T.

In the self-service touch query all-in-one machine, power module still includes the third resistance, the one end of third resistance with DC power supply connects, the other end of third resistance with the one end of the coil of relay is connected, the resistance of third resistance is 43k omega.

In the self-service touch query all-in-one machine, the first triode is a PNP type triode.

In the self-service touch query all-in-one machine of the present invention, the second triode is an NPN type triode.

In the self-service touch inquiry all-in-one, 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 self-service touch inquiry all-in-one has following beneficial effect: the intelligent card reader is provided with a singlechip, a card reader, a card reading module, a touch display screen, a printing module, a power supply module and a wireless communication module; the power module includes DC power supply, first potentiometre, first electric capacity, first zener diode, the second resistance, first triode, the third electric capacity, the second triode, power chip, a relay, second electric capacity and voltage output end, this power module compares with the power supply part of traditional touch inquiry all-in-one, its components and parts that use are less, owing to saved some components and parts, can reduce the hardware cost like this, in addition, the third electric capacity is used for preventing the interference between first triode and the second triode, therefore 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 circuit diagram of the power supply portion of a conventional touch query kiosk;

fig. 2 is a schematic structural diagram of an embodiment of the self-service touch query all-in-one machine of the present invention;

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 embodiment of self-service touch inquiry all-in-one, this self-service touch inquiry all-in-one's structural schematic is as shown in figure 1. In fig. 1, the self-service touch query all-in-one machine comprises a single chip microcomputer 1, a card reader 2, a card reading module 3, a touch display screen 4, a printing module 5, a power supply module 6 and a wireless communication module 7, wherein the card reading module 3, the touch display screen 4, the printing module 5 and the power supply module 6 are all connected with the single chip microcomputer 1, the card reader 2 is connected with the card reading module 3, and the single chip microcomputer 1 is connected with a server through the wireless communication module 7.

The card reader 2 and the card reading module 3 form an input part, the touch display screen 4 can be used as an input part or an output part, identity or investigation information is input into the single chip microcomputer 1, then the single chip microcomputer 1 communicates with a server through the wireless communication module 7 to obtain relevant checking results and solutions, and finally the checking results and the solutions are output through the touch display screen 4 or the printing module. After a user uses a second-generation ID card to build files in advance, the card reader 2 reads card information through the card reading module 3, the single chip microcomputer 1 and the server inquire the information and communicate the information to obtain user health historical data and health suggestion information, and the user health historical data and the health suggestion information are finally output through the touch display screen 4 or the printing module.

In this embodiment, the wireless communication module 7 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.

In this embodiment, the single chip microcomputer 1, the card reader 2, the card reading module 3, the touch display screen 4 and the printing module are all implemented by adopting structures in the prior art, and the working principle of the single chip microcomputer is also the working principle in the prior art, which is not described again here.

Fig. 3 is a schematic circuit diagram of a power module in this embodiment, in fig. 3, the power module 6 includes a dc power source VCC, a first potentiometer RP1, a first capacitor C1, a first zener diode D1, a second zener diode D2, a second resistor R2, a first transistor Q1, a third capacitor C3, a second transistor Q2, a power chip U1, a relay K1, a second capacitor C2, and a voltage output Vo, where the dc power source VCC is respectively connected to one fixed end of the first potentiometer RP1 and one end of a contact of the relay K1, the other end of a contact of the relay K1 is connected to the voltage output Vo, a sliding end of the first potentiometer RP1 is respectively connected to one end of the first capacitor C1, a power pin of the power chip U1, an input pin of the power chip U1, an emitter of the first transistor Q1, a cathode of the first zener diode D1, and a cathode 2 of the second zener diode D2, an anode of the first voltage-stabilizing diode D1 is connected with a base of the first triode Q1, an anode of the second voltage-stabilizing diode D2 is connected with one end of the second resistor R2 and a base of the second triode Q2 respectively, the other fixed end of the first potentiometer RP1 is connected with the other end of the first capacitor C1, the other end of the second resistor R2 and an emitter of the second triode Q2 respectively and is grounded, a collector of the first triode Q1 is connected with a collector of the second triode Q2 through the third capacitor C3, a ground pin of the power chip U1 is grounded, an output pin of the power chip U1 is connected with one end of the second capacitor C2 and one end of a coil of the relay K1 respectively, and the other end of the second capacitor C1 and the other end of the coil of the relay K1 are both grounded.

Compared with the power supply part of the traditional touch query all-in-one machine in the figure 1, the power supply module 6 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. The third capacitor C3 is a coupling capacitor for preventing interference between the first transistor Q1 and the second transistor Q2, so that the circuit has high safety and reliability, and achieves better technical effect than the conventional technology with fewer components.

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 third electric capacity C3 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 third capacitor C3 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 of the third capacitor C3 is 390 pF. Of course, in practical applications, the capacitance value of the third capacitor C3 may be adjusted accordingly, that is, the capacitance value of the third capacitor C3 may be increased or decreased accordingly.

The operation of the power module 6 will be explained below. The first potentiometer RP1 and the first capacitor C1 form a voltage division sampling circuit, the first voltage stabilizing diode D1 and the first triode Q1 form an overvoltage judging circuit, the second voltage stabilizing diode D2, the second resistor R2, the second triode Q2 and the third capacitor C3 form an undervoltage judging circuit, the power chip U1 and the second capacitor C2 form a switch control circuit, and the relay K1 forms a switch circuit.

The voltage division sampling circuit is used for carrying out voltage division processing on the voltage input by the direct-current power supply VCC and converting the voltage into sampling voltage input for the overvoltage judging circuit and the undervoltage judging circuit. The overvoltage judging circuit and the undervoltage judging circuit respectively acquire sampling voltages, if the overvoltage judging circuit judges that the sampling voltages are larger than or equal to a voltage stabilizing value of the first voltage stabilizing diode D1, the switch control circuit inputs high levels, if the undervoltage judging circuit judges that the sampling voltages are smaller than or equal to a voltage stabilizing value of the second voltage stabilizing diode D2, the switch control circuit inputs high levels, and if the sampling voltages are smaller than the voltage stabilizing value of the first voltage stabilizing diode D1 and larger than the voltage stabilizing value of the second voltage stabilizing diode D2, the overvoltage judging circuit and the undervoltage judging circuit output low levels to the switch control circuit. If the input end of the switch control circuit receives a high level, the output end of the switch control circuit does not output, and if the input end of the switch control circuit receives a low level, the output end of the switch control circuit outputs normally. When the switch control circuit outputs normally, the switch circuit is conducted, and the direct-current power supply VCC supplies power to the single chip microcomputer 1 normally. When the switch control circuit has no output, the switch circuit is not conducted, and the direct current power supply VCC stops supplying power to the single chip microcomputer 1.

When the sampling voltage is a normal working voltage, the first zener diode D1 cannot break down and conduct, the base of the first triode Q1 inputs a low level, and when the base input signal of the first triode Q1 is a low level, the first triode Q1 conducts. When the sampling voltage is the normal working voltage, the second voltage-stabilizing diode D2 breaks down and conducts, the high level enters the base of the second triode Q2, and the second triode Q2 conducts. When the first triode Q1 and the second triode Q2 are conducted simultaneously, the input pin of the power chip U1 is grounded, the power chip U1 inputs low level, the output pin of the power chip U1 outputs normally, when corresponding current flows through the coil of the relay K1, the contact of the relay K1 is closed, and the direct-current power supply VCC supplies power to the single chip microcomputer 1 normally.

In this embodiment, the first transistor Q1 is a PNP transistor, and the second transistor Q2 is an NPN transistor. Certainly, in practical applications, the first transistor Q1 may also be an NPN-type transistor, and the second transistor Q2 may also be a PNP-type transistor, but the structure of the circuit is also changed accordingly.

In this embodiment, the power module 6 further includes a third diode D3, an anode of the third diode D3 is connected to a cathode of the first zener diode D1 and a cathode of the second zener diode D2, respectively, and a cathode of the third diode D3 is connected to a power pin and an input pin of the power chip U1 and an emitter of the first transistor Q1, respectively. The third diode D3 is a current limiting diode for current limiting protection. The current limiting protection principle is as follows: when the current of the branch where the third diode D3 is located is large, the current of the branch where the third diode D3 is located can be reduced by the third diode D3, so that the branch can be kept in a normal operating state, and the components in the circuit cannot be 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 third diode D3 has a model number S-152T. Of course, in practical applications, the third diode D3 may also be another type of diode with similar functions.

In this embodiment, the power module 6 further includes a third resistor R3, one end of the third resistor R3 is connected to the dc power VCC, and the other end of the third resistor R3 is connected to one end of the coil of the relay K1. The third resistor R3 is a current limiting resistor for current limiting protection. The current limiting protection principle is as follows: when the current of the branch where the third resistor R3 is located is large, the current of the branch where the third resistor R3 is located can be reduced by the third resistor R3, so that the branch can be kept in a normal operating state, and the components in the circuit cannot be burned out due to the large current, so that the safety and reliability of the circuit are further enhanced.

It should be noted that, in the present embodiment, the resistance of the third resistor R3 is 43k Ω. Of course, in practical applications, the resistance of the third resistor R3 may be adjusted according to specific situations, that is, the resistance of the third resistor R3 may be increased or decreased according to specific situations.

In a word, in this embodiment, compared with the power supply part of the conventional touch query all-in-one machine, the power supply module 6 has fewer used components, a simpler circuit structure and convenience in maintenance, and can reduce the hardware cost due to the fact that some components are saved. In addition, since the power module 6 is provided with a coupling capacitor, the safety and reliability of the circuit are high.

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 self-service touch query all-in-one machine is characterized by comprising a single chip microcomputer, a card reader, a card reading module, a touch display screen, a printing module, a power supply module and a wireless communication module, wherein the card reading module, the touch display screen, the printing module and the power supply module are all connected with the single chip microcomputer;

2. The self-service touch query all-in-one machine of claim 1, wherein the power module further comprises a third diode, an anode of the third diode is connected with a cathode of the first voltage stabilizing diode and a cathode of the second voltage stabilizing diode respectively, a cathode of the third diode is connected with a power pin and an input pin of the power chip and an emitter of the first triode respectively, and the third diode is S-152T in model.

3. The self-service touch query all-in-one machine of claim 2, wherein the power module further comprises a third resistor, one end of the third resistor is connected with the direct-current power supply, the other end of the third resistor is connected with one end of a coil of the relay, and the resistance value of the third resistor is 43k Ω.

4. The self-service touch query kiosk of any of claims 1 to 3, wherein the first triode is a PNP triode.

5. The self-service touch query kiosk of any of claims 1 to 3, wherein the second triode is an NPN triode.

6. The self-service touch query all-in-one machine of 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.