CN210181502U - Vertical touch query machine - Google Patents
Vertical touch query machine Download PDFInfo
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- CN210181502U CN210181502U CN201920813644.0U CN201920813644U CN210181502U CN 210181502 U CN210181502 U CN 210181502U CN 201920813644 U CN201920813644 U CN 201920813644U CN 210181502 U CN210181502 U CN 210181502U
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Abstract
The utility model discloses a vertical touch inquiry all-in-one machine, including organism and control panel, the control panel sets up in the lower part of organism, the bottom of organism is equipped with the base, the organism is hollow casing, its cross section is rectangle, the top of organism is equipped with the touch display screen, be equipped with CPU, storage module, voice input module, USB interface, wireless communication module, power module and music play module on the control panel, touch display screen, storage module, voice input module, USB interface, wireless communication module, power module and music play module all are connected with CPU; the power supply module comprises a photoelectric coupler, a voltage input end, a first resistor, a first triode, a second triode and a voltage output end, wherein the anode of a light emitting diode in the photoelectric coupler is connected with a control signal, and the cathode of the light emitting diode in the photoelectric coupler is grounded. 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
Technical Field
The utility model relates to a touch inquiry all-in-one machine circuit field, in particular to vertical touch inquiry all-in-one machine.
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 part of a conventional vertical touch query all-in-one machine, and as can be seen from fig. 1, the power supply part of the conventional vertical touch query all-in-one machine uses many components, has a complex circuit structure, is high in hardware cost, and is inconvenient to maintain. In addition, because the power supply part of the traditional vertical touch inquiry all-in-one 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, a circuit structure is comparatively simple, the cost is lower, the security and the higher vertical 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 vertical touch query all-in-one machine comprises a machine body and a control panel, wherein the control panel is arranged at the lower part of the machine body, a base is arranged at the bottom of the machine body, the machine body is a hollow shell, the cross section of the machine body is rectangular, a touch display screen is arranged at the top of the machine body, a CPU, a storage module, a voice input module, a USB interface, a wireless communication module, a power supply module and a music playing module are arranged on the control panel, and the touch display screen, the storage module, the voice input module, the USB interface, the wireless communication module, the power supply module and the music playing module are all connected with the CPU;
the power supply module comprises a photoelectric coupler, a voltage input end, a first resistor, a first triode, a second triode and a voltage output end, wherein the anode of a light emitting diode in the photoelectric coupler is connected with a control signal, the cathode of the light emitting diode in the photoelectric coupler is grounded, the collector of the photoelectric coupler is respectively connected with the voltage input end, the emitter of the second triode and one end of the first resistor, the other end of the first resistor is connected with the base of the first triode, the collector of the first triode is connected with the base of the second triode, the collector of the second triode is connected with one end of the voltage output end, and the emitter of the photoelectric coupler is respectively connected with the emitter of the first triode and the other end of the voltage output end.
In the vertical touch query all-in-one machine of the present invention, the first diode has a model of E-562.
In the vertical touch query all-in-one machine, the power module further comprises a first capacitor, one end of the first capacitor is connected with the base of the second triode, and the other end of the first capacitor is connected with the collector of the first triode.
Vertical touch inquiry all-in-one in, the capacitance value of first electric capacity is 270 pF.
Vertical touch inquiry all-in-one in, wireless communication module is bluetooth module, wiFi module, GSM module, GPRS module, CDMA2000 module, WCDMA module, TD-SCDMA module, Zigbee module or loRa module.
In the vertical touch query all-in-one machine of the present invention, the first triode is an NPN type triode.
In the vertical touch query all-in-one machine of the present invention, the second triode is an NPN type triode.
Implement the utility model discloses a vertical touch inquiry all-in-one has following beneficial effect: the intelligent music player is provided with a machine body and a control panel, wherein the control panel is provided with a CPU, a storage module, a voice input module, a USB interface, a wireless communication module, a power supply module and a music playing module; this power module includes photoelectric coupler, voltage input end, first resistance, first triode, second triode and voltage output end, and this power module compares with the power supply part of traditional vertical touch inquiry all-in-one, and the components and parts that its used are less, owing to saved some components and parts, can reduce the hardware cost like this, and in addition, first diode is used for carrying out current-limiting protection, and consequently 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 vertical touch query kiosk;
fig. 2 is a schematic structural diagram of an embodiment of the vertical touch query all-in-one machine of the present invention;
FIG. 3 is a schematic structural view of a control board in the embodiment;
fig. 4 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.
In the embodiment of the present invention, the structural schematic diagram of the vertical touch query all-in-one machine is shown in fig. 2. In fig. 2, the vertical touch query all-in-one machine comprises a machine body 1 and a control panel 2, wherein the control panel 2 is arranged at the lower part of the machine body 1, a base 3 is arranged at the bottom of the machine body 1, the machine body 1 is a hollow shell, the cross section of the machine body 1 is rectangular, and a touch display screen 4 is arranged at the top of the machine body 1.
Fig. 3 is a schematic structural diagram of the control board in this embodiment, in fig. 3, the control board 2 is provided with a CPU21, a storage module 22, a voice input module 23, a USB interface 24, a wireless communication module 25, a power supply module 26, and a music playing module 27, wherein the touch display screen 4, the storage module 22, the voice input module 23, the USB interface 24, the wireless communication module 25, the power supply module 26, and the music playing module 27 are all connected to the CPU 21.
The storage module 22 is used for storing music, the voice input module 23 is used for inputting voice signals, the USB interface 24 can be connected to a mobile phone and a computer, the wireless communication module 25 is connected to a loudspeaker, the voice signals to be played can be sent to the loudspeaker in a wireless manner, the power supply module 26 is used for supplying power, the music playing module 27 is used for playing music, and a user can perform touch input signals through the touch display screen 4 and can also perform display through the touch display screen 4.
In this embodiment, the wireless communication module 25 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. 4 is a schematic circuit diagram of the power module of this embodiment, in fig. 4, the power module 26 includes a photocoupler U1, a voltage input terminal Vin, a first resistor R1, a first transistor Q1, a second transistor Q2, and a voltage output terminal Vo, the anode of a light emitting diode in the photocoupler U1 is connected with a control signal, the cathode of the light emitting diode in the photocoupler U1 is grounded, the collector of a photosensitive triode in the photocoupler U1 is connected with a voltage input end Vin, the emitter of the second triode Q2 and one end of a first resistor R1 respectively, the other end of the first resistor R1 is connected with the base of a first triode Q1, the collector of the first triode Q1 is connected with the base of the second triode Q2, the collector of the second triode Q2 is connected with one end of a voltage output end o, and the emitter of the photosensitive triode in the photocoupler U1 is connected with the emitter of the first triode Q1 and the other end of the voltage output end Vo respectively.
Compared with the power supply part of the traditional vertical touch query all-in-one machine in fig. 1, the power supply module 26 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 first diode D1 is a current limiting diode for current limiting protection of the emitter current of the second transistor Q2. The current limiting protection principle is as follows: when the emitter current of the second triode Q2 is large, the first diode D1 can reduce the emitter current of the second triode Q2 to keep the second triode Q2 in a normal working state, so that the elements in the circuit are not burnt out due to too large current, the safety and reliability of the circuit are high, and the technical effect better than that of the traditional technology is achieved by fewer elements.
It should be noted that in the present embodiment, the first diode D1 is of a type E-562. Of course, in practical applications, the first diode D1 may also be another type of diode with similar functions.
The working principle of the power module 26 is as follows: the anode of the led in the optocoupler U1 receives a control signal generated by the control level. For example, when the control signal is high, the light emitting diode built in the photocoupler U1 emits light and irradiates the photo transistor. When the light emitting diode emits light, the phototriode is conducted in a single direction from the emitter of the phototriode in the photoelectric coupler U1 to the emitter of the phototriode, namely, photocurrent is generated, and electric-light-electric conversion is carried out to realize conduction. At this time, a loop is formed from the collector of the phototriode in the photocoupler U1 to the base of the first triode Q1 and from the emitter of the phototriode in the photocoupler U1 to the emitter of the first triode Q1, so that the voltages of the base of the first triode Q1 and the emitter of the first triode Q1 are both voltages provided by the other end of the output terminal Vo. That is, the base bias voltage provided by the voltage input terminal Vin to the first transistor Q1 through the first resistor R1 is pulled to the voltage provided by the other end of the voltage output terminal Vo, so that the difference between the emitter voltage and the collector voltage of the first transistor Q1 is almost 0(Vbe ═ 0), and the emitter and the collector are made non-conductive. At this time, the emitter and the base of the second transistor Q2 are not conductive due to no voltage loop, i.e., the second transistor Q2 is not conductive. Therefore, a path between the voltage input terminal Vin and one end of the output terminal Vo is disconnected, and the other ends of the voltage input terminal Vin and the output terminal Vo cannot supply a voltage to the CPU 21.
When the anode of the light emitting diode in the photocoupler U1 receives a low level control signal, the light emitting diode does not emit light, i.e., the photocoupler U1 does not work. At this time, the collector and the emitter of the photosensitive triode in the photocoupler U1 are not conducted, the voltage of the base of the first triode Q1 is the voltage provided by the voltage input terminal Vin, the voltage of the emitter of the first triode Q1 is the voltage provided by the other end of the voltage output terminal Vo, that is, the voltage input terminal Vin provides the base bias voltage to the first triode Q1 through the first resistor R1 and the second resistor R2, so that the first triode Q1 is conducted, the voltage loop of the base and the emitter of the second triode Q2 is conducted, the second triode Q2 is conducted, the voltage provided by one end of the voltage output terminal Vo is the voltage provided by the voltage input terminal Vin, and at this time, the other ends of the voltage input terminal Vin and the voltage output terminal Vo can provide the voltage for the CPU 21.
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 26 further includes a first capacitor C1, one end of the first capacitor C1 is connected to the base of the second transistor Q2, and the other end of the first capacitor C1 is connected to the collector of the first transistor Q1. The first capacitor C1 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 first electric capacity C1 as coupling element, can make the operating point of back one-level not receive the influence of preceding one-level like this, also make the operating point of first triode Q1 not receive the influence of second triode Q2 exactly. The first capacitor C1 is an inter-stage coupling capacitor, and functions to isolate the dc bias circuit of the front and rear stages of the second transistor Q2 and the first transistor Q1, 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 first capacitor C1 is 270 pF. Of course, in practical applications, the capacitance value of the first capacitor C1 may be adjusted accordingly, that is, the capacitance value of the first capacitor C1 may be increased or decreased accordingly.
In this embodiment, the CPU21, the storage module 22, the voice input module 23, the USB interface 24, the wireless communication module 25, and the music playing module 27 are all implemented by using the structure in the prior art, and the operation principle thereof is also the operation principle in the prior art, and will not be described here.
In short, in this embodiment, compared with the power supply part of the conventional vertical touch query all-in-one machine, the power supply module 26 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, since the power supply module 26 is provided with a current limiting diode, 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 (7)
1. A vertical touch query all-in-one machine is characterized by comprising a machine body and a control panel, wherein the control panel is arranged at the lower part of the machine body, a base is arranged at the bottom of the machine body, the machine body is a hollow shell, the cross section of the machine body is rectangular, a touch display screen is arranged at the top of the machine body, a CPU, a storage module, a voice input module, a USB interface, a wireless communication module, a power supply module and a music playing module are arranged on the control panel, and the touch display screen, the storage module, the voice input module, the USB interface, the wireless communication module, the power supply module and the music playing module are all connected with the CPU;
the power supply module comprises a photoelectric coupler, a voltage input end, a first resistor, a first triode, a second triode and a voltage output end, wherein the anode of a light emitting diode in the photoelectric coupler is connected with a control signal, the cathode of the light emitting diode in the photoelectric coupler is grounded, the collector of the photoelectric coupler is respectively connected with the voltage input end, the emitter of the second triode and one end of the first resistor, the other end of the first resistor is connected with the base of the first triode, the collector of the first triode is connected with the base of the second triode, the collector of the second triode is connected with one end of the voltage output end, and the emitter of the photoelectric coupler is respectively connected with the emitter of the first triode and the other end of the voltage output end.
2. The vertical touch query kiosk of claim 1 wherein the first diode is model number E-562.
3. The vertical touch query all-in-one machine according to claim 2, wherein the power supply module further comprises a first capacitor, one end of the first capacitor is connected with the base electrode of the second triode, and the other end of the first capacitor is connected with the collector electrode of the first triode.
4. The vertical touch query kiosk of claim 3 wherein the first capacitor has a capacitance of 270 pF.
5. The vertical touch query all-in-one machine according to any one of claims 1 to 4, 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.
6. The vertical touch query integrator of any one of claims 1 to 4, wherein the first triode is an NPN triode.
7. The vertical touch query machine according to any one of claims 1 to 4, wherein the second triode is an NPN triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920813644.0U CN210181502U (en) | 2019-05-31 | 2019-05-31 | Vertical touch query machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920813644.0U CN210181502U (en) | 2019-05-31 | 2019-05-31 | Vertical touch query machine |
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| Publication Number | Publication Date |
|---|---|
| CN210181502U true CN210181502U (en) | 2020-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920813644.0U Active CN210181502U (en) | 2019-05-31 | 2019-05-31 | Vertical touch query machine |
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| CN (1) | CN210181502U (en) |
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- 2019-05-31 CN CN201920813644.0U patent/CN210181502U/en active Active
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