CN210222719U - Self-service touch inquiry machine - Google Patents
Self-service touch inquiry machine Download PDFInfo
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- CN210222719U CN210222719U CN201920995724.2U CN201920995724U CN210222719U CN 210222719 U CN210222719 U CN 210222719U CN 201920995724 U CN201920995724 U CN 201920995724U CN 210222719 U CN210222719 U CN 210222719U
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Abstract
The utility model discloses a self-service touch inquiry machine, which comprises an inquiry cabinet body, wherein a computer is arranged in the inquiry cabinet body, the computer is connected with a touch display screen, the inquiry cabinet body is arranged on a turntable, the central position of the turntable is connected with a rotating shaft, one end of the rotating shaft is connected on the turntable through a bearing, a circuit board is arranged in the touch display screen, and a power module is arranged on the circuit board; the power supply module comprises a voltage input end, a first resistor, a first capacitor, a second resistor, a second capacitor, a third resistor, a first operational amplifier, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a second operational amplifier, a first triode, a ninth resistor, a direct current power supply, a first diode, a second triode, a third capacitor and a voltage output end, wherein the voltage input end is connected with one end of the first resistor and one end of the sixth resistor respectively. 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 an inquiry machine circuit field, in particular to self-service touch inquiry machine.
Background
The touch inquiry machine (hereinafter referred to as inquiry 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 streamline integrated design and attractive in modeling. Touch query machines are increasingly being used in various aspects of our daily life and work. The integrated machine can be seen in many occasions such as telecom business halls, post business halls, tax collection halls, city street (city information inquiry), office buildings, airports, stations, banks, museums, libraries, exhibitions, hospitals, hotels and hotels.
Fig. 1 is a schematic circuit diagram of a power supply portion of a conventional touch query machine, and it can be seen from fig. 1 that the power supply portion of the conventional touch query machine has many components, a complex circuit structure, high hardware cost and inconvenient maintenance. In addition, since the power supply part of the conventional touch inquiry machine lacks a corresponding circuit protection function, 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 self-service touch inquiry machine of reliability of convenient maintenance, circuit are provided.
The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a construct self-service touch inquiry machine, includes the inquiry cabinet body, the internal computer that is equipped with of inquiry cabinet, the computer is connected with touch-control display screen, touch-control display screen is located the upper portion of the inquiry cabinet body, the inquiry cabinet body is installed on the carousel, the central point of carousel puts and is connected with the pivot, the one end of pivot is passed through the bearing and is connected on the carousel, and the other end passes through the center that the bearing is connected to the base, the center of carousel with the center of base is on same straight line, be provided with semicircular recess along the circumferencial direction on the base, the bottom of carousel is connected with the bracing piece, the bottom of bracing piece is connected with the gyro wheel, the gyro wheel sets up in the recess, touch-control display screen's inside is equipped.
The power supply module comprises a voltage input end, a first resistor, a first capacitor, a second resistor, a second capacitor, a third resistor, a first operational amplifier, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a second operational amplifier, a first triode, a ninth resistor, a direct current power supply, a first diode, a second triode, a third capacitor and a voltage output end, wherein the voltage input end is respectively connected with one end of the first resistor and one end of the sixth resistor, the other end of the first resistor is respectively connected with one end of the first capacitor, one end of the second resistor and one end of the second capacitor, the other end of the second capacitor is respectively connected with one end of the third resistor and the in-phase input end of the first operational amplifier, the other end of the first capacitor and the other end of the third resistor are both grounded, and the inverting input end of the first operational amplifier is respectively connected with one end of the fourth resistor and one end of the fifth resistor The other end of the fourth resistor is grounded, the output end of the first operational amplifier is respectively connected with the other end of the second resistor, the other end of the fifth resistor, the collector electrode of the first triode, the voltage output end and the base electrode of the first triode, the emitter electrode of the first triode is grounded through the ninth resistor, the non-inverting input end of the second operational amplifier is respectively connected with one end of the eighth resistor and the reference end, the other end of the eighth resistor is grounded, the inverting input end of the second operational amplifier is respectively connected with the other end of the sixth resistor and one end of the seventh resistor, the output end of the second operational amplifier is respectively connected with the other end of the seventh resistor and the base electrode of the second triode, the collector electrode of the second triode is connected with the cathode of the first diode, and the anode of the first diode is connected with the direct current power supply, and the emitter of the second triode is grounded through the third capacitor, and the model of the first diode is S-272T.
In the self-service touch query machine, the power module further includes a tenth resistor, one end of the tenth resistor and the base of the first triode are connected the other end of the tenth resistor and the collector of the first triode are connected, and the resistance of the tenth resistor is 180 pF.
In the self-service touch inquiry machine of the present invention, the power module further comprises a second diode, an anode of the second diode is connected to an output terminal of the first operational amplifier, a cathode of the second diode is connected to a base of the first triode, and a model of the second diode is E-822.
In the self-service touch inquiry machine of the present invention, the first triode is an NPN-type triode.
In the self-service touch inquiry machine of the present invention, the second triode is an NPN-type triode.
Implement the utility model discloses a self-service touch inquiry machine has following beneficial effect: the inquiring cabinet is internally provided with a computer, the computer is connected with a touch display screen, a circuit board is arranged in the touch display screen, and a power module is arranged on the circuit board; the power module includes voltage input end, first resistance, first electric capacity, the second resistance, the second electric capacity, the third resistance, first operational amplifier, the fourth resistance, the fifth resistance, the sixth resistance, the seventh resistance, the eighth resistance, the second operational amplifier, first triode, the ninth resistance, direct current power supply, first diode, the second triode, third electric capacity and voltage output end, this power module compares with the power supply part of traditional touch inquiry machine, the components and parts that it used are less, owing to saved some components and parts, can reduce the hardware cost like this, in addition, first diode is used for carrying out the current-limiting protection, consequently 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 circuit diagram of the power supply portion of a conventional touch query machine;
fig. 2 is a schematic structural diagram of an embodiment of the self-service touch query 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.
In the embodiment of the present invention, the schematic structural diagram of the self-service touch query machine is shown in fig. 2. This self-service touch inquiry machine is including the inquiry cabinet body 1, the internal computer that is equipped with of inquiry cabinet, the computer is connected with touch-control display screen 2, touch-control display screen 2 is located the upper portion of the inquiry cabinet body 1, the inquiry cabinet body 1 is installed on carousel 3, the central point of carousel 3 puts and is connected with pivot 4, the bearing is passed through to the one end of pivot 4 and is connected on carousel 3, the other end passes through the center that the bearing is connected to base 5, the center of carousel 3 and the center of base 5 are on same straight line, be provided with semicircular recess 6 along the circumferencial direction on the base 5, the bottom of carousel 3 is connected with bracing piece 7, the bottom of bracing piece 7 is connected with gyro wheel 8, gyro wheel 8 sets up in recess 6, the inside of touch-control display screen.
Operate the computer through touch-control display screen 2, operation result shows on touch-control display screen 2, and gyro wheel 8 sets up in recess 6, at first forms the support to carousel 3, when rotating carousel 3, can ensure the stability of this touch inquiry machine, and the inside of the inquiry cabinet body 1 is equipped with the inside steelframe (not shown in the figure) that is used for supporting touch-control display screen 2.
Fig. 3 is a schematic circuit diagram of a power module in this embodiment, in fig. 3, the power module includes a voltage input terminal Vin, a first resistor R1, a first capacitor C1, a second resistor R2, a second capacitor C2, a third resistor R3, a first operational amplifier a1, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a second operational amplifier a2, a first triode Q1, a ninth resistor R9, a dc power source VCC, a first diode D1, a second triode Q2, a third capacitor C3, and a voltage output terminal Vo, wherein the voltage input terminal Vin is respectively connected to one end of the first resistor R1 and one end of the sixth resistor R6, the other end of the first resistor R1 is respectively connected to one end of the first capacitor C1, one end of the second resistor R2, and one end of the second capacitor C2, the other end of the second resistor R2 is respectively connected to the non-inverting input terminal of the first operational amplifier a2, the other end of the first capacitor C1 and the other end of the third resistor R3 are both grounded, the inverting input terminal of the first operational amplifier a1 is respectively connected to one end of the fourth resistor R4 and one end of the fifth resistor R5, the other end of the fourth resistor R4 is grounded, the output terminal of the first operational amplifier a1 is respectively connected to the other end of the second resistor R2, the other end of the fifth resistor R5, the collector of the first transistor Q1, the voltage output terminal Vo, and the base of the first transistor Q1, the emitter of the first transistor Q1 is grounded through the ninth resistor R9, the non-inverting input terminal of the second operational amplifier a2 is respectively connected to one end of the eighth resistor R8 and the reference terminal Ref, the other end of the eighth resistor R8 is grounded, the inverting input terminal of the second operational amplifier a2 is respectively connected to the other end of the sixth resistor R6 and one end of the seventh resistor R7, the output terminal of the second operational amplifier a2 is respectively connected to the other end of the seventh resistor R35 7 and the base of the second transistor Q2. The collector of the second triode Q2 is connected to the cathode of the first diode D1, the anode of the first diode D1 is connected to the dc power VCC, and the emitter of the second triode Q2 is grounded through the third capacitor C3.
Compared with the power supply part of the traditional touch inquiry machine in the figure 1, the power supply module 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 collector current of the second transistor Q2. The current limiting protection principle is as follows: when the collector current of the second triode Q2 is large, the first diode D1 can reduce the collector current of the second triode Q2, so that the second triode Q2 can be kept in a normal working state, and the phenomenon that components in a circuit are burnt out due to too large current is avoided, so that the safety and reliability of the circuit are high, and the technical effect better than that of the conventional technology is achieved by fewer components.
It should be noted that in the present embodiment, the first diode D1 has a model number S-272T. Of course, in practical applications, the first diode D1 may also be another type of diode with similar functions.
The voltage of the reference terminal Ref is 4V, and the voltage of the dc power VCC is 5V.
It should be noted that in this embodiment, the first transistor Q1 is an NPN transistor, and the second transistor Q2 is an NPN transistor. 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 further includes a tenth resistor R10, one end of the tenth resistor R10 is connected to the base of the first transistor Q1, and the other end of the tenth resistor R10 is connected to the collector of the first transistor Q1. The tenth resistor R10 is a current limiting resistor for current limiting the collector current of the first transistor Q1. The current limiting protection principle is as follows: when the collector current of the first triode Q1 is large, the tenth resistor R10 can reduce the collector current of the first triode Q1 to keep the triode Q1 in a normal operating state, so that the device in the circuit is not burned out due to too large current, and the safety and reliability of the circuit are further enhanced.
It should be noted that, in this embodiment, the resistance of the tenth resistor R10 is 180 pF. Of course, in practical applications, the resistance of the tenth resistor R10 may be adjusted according to specific situations, that is, the resistance of the tenth resistor R10 may be increased or decreased according to specific situations.
In this embodiment, the power module further includes a second diode D2, an anode of the second diode D2 is connected to the output terminal of the first operational amplifier a1, and a cathode of the second diode D2 is connected to the base of the first transistor Q1. The second diode D2 is a current limiting diode for current limiting protection of the base current of the first transistor Q1. The current limiting protection principle is as follows: when the base current of the first triode Q1 is large, the second diode D2 can reduce the base current of the first triode Q1 to keep the base current in a normal working state, so that the elements in the circuit are not burnt out due to too large current, and the safety and reliability of the circuit are further enhanced.
It should be noted that in the present embodiment, the second diode D2 has a model number E-822. 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, this power module compares with the power supply part of traditional touch inquiry machine, and its components and parts that use are less, and circuit structure is comparatively simple, and convenient maintenance owing to saved some components and parts, can reduce hardware cost like this. In addition, be equipped with current-limiting diode among this power module, consequently the utility model discloses the security and the reliability of circuit are higher.
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 (5)
1. A self-service touch inquiry machine is characterized by comprising an inquiry cabinet body, wherein a computer is arranged in the inquiry cabinet body, the computer is connected with a touch display screen, the touch display screen is positioned at the upper part of the inquiry cabinet body, the inquiry cabinet body is arranged on a turntable, the central position of the turntable is connected with a rotating shaft, one end of the rotating shaft is connected onto the turntable through a bearing, the other end of the rotating shaft is connected onto the center of a base through a bearing, the center of the turntable and the center of the base are on the same straight line, a semicircular groove is formed in the base along the circumferential direction, the bottom of the turntable is connected with a supporting rod, the bottom of the supporting rod is connected with a roller, the roller is arranged in the groove, a circuit board is arranged in the touch display screen, and a power module is;
the power supply module comprises a voltage input end, a first resistor, a first capacitor, a second resistor, a second capacitor, a third resistor, a first operational amplifier, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a second operational amplifier, a first triode, a ninth resistor, a direct current power supply, a first diode, a second triode, a third capacitor and a voltage output end, wherein the voltage input end is respectively connected with one end of the first resistor and one end of the sixth resistor, the other end of the first resistor is respectively connected with one end of the first capacitor, one end of the second resistor and one end of the second capacitor, the other end of the second capacitor is respectively connected with one end of the third resistor and the in-phase input end of the first operational amplifier, the other end of the first capacitor and the other end of the third resistor are both grounded, and the inverting input end of the first operational amplifier is respectively connected with one end of the fourth resistor and one end of the fifth resistor The other end of the fourth resistor is grounded, the output end of the first operational amplifier is respectively connected with the other end of the second resistor, the other end of the fifth resistor, the collector electrode of the first triode, the voltage output end and the base electrode of the first triode, the emitter electrode of the first triode is grounded through the ninth resistor, the non-inverting input end of the second operational amplifier is respectively connected with one end of the eighth resistor and the reference end, the other end of the eighth resistor is grounded, the inverting input end of the second operational amplifier is respectively connected with the other end of the sixth resistor and one end of the seventh resistor, the output end of the second operational amplifier is respectively connected with the other end of the seventh resistor and the base electrode of the second triode, the collector electrode of the second triode is connected with the cathode of the first diode, and the anode of the first diode is connected with the direct current power supply, and the emitter of the second triode is grounded through the third capacitor, and the model of the first diode is S-272T.
2. The self-service touch inquiry machine according to claim 1, wherein the power supply module further comprises a tenth resistor, one end of the tenth resistor is connected to the base of the first triode, the other end of the tenth resistor is connected to the collector of the first triode, and the tenth resistor has a resistance of 180 pF.
3. The self-service touch inquiry machine according to claim 2, wherein the power supply module further comprises a second diode, an anode of the second diode is connected with the output end of the first operational amplifier, a cathode of the second diode is connected with the base electrode of the first triode, and the second diode is E-822 in model number.
4. The machine of any one of claims 1 to 3, wherein the first transistor is an NPN transistor.
5. The machine of any one of claims 1 to 3, wherein the second transistor is an NPN transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920995724.2U CN210222719U (en) | 2019-06-28 | 2019-06-28 | Self-service touch inquiry machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920995724.2U CN210222719U (en) | 2019-06-28 | 2019-06-28 | Self-service touch inquiry machine |
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| Publication Number | Publication Date |
|---|---|
| CN210222719U true CN210222719U (en) | 2020-03-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920995724.2U Active CN210222719U (en) | 2019-06-28 | 2019-06-28 | Self-service touch inquiry machine |
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|---|---|
| CN (1) | CN210222719U (en) |
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- 2019-06-28 CN CN201920995724.2U patent/CN210222719U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: Room 701, Building A, No. 10, Xicheng Middle Street, Huangpu District, Guangzhou, Guangdong 510600 Patentee after: Guangzhou Touch Technology Co.,Ltd. Address before: 4th Floor, Self made Workshop, No. 52, Nanxiang 3rd Road, Science City, Guangzhou Hi tech Industrial Development Zone, Guangdong 510600 Patentee before: GUANGZHOU TOUCH-PIE ELECTRONIC TECHNOLOGY Co.,Ltd. |
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| CP03 | Change of name, title or address |