CN209946742U - Controllable computer integrated machine - Google Patents

Abstract

The utility model discloses a controllable computer integrated machine, which comprises a casing and an integrated device. The integrated device comprises a keyboard input interface, a mouse input interface, a single chip, a power supply module, a wireless communication module, a touch display screen, a fan and a temperature sensor. The keyboard input interface, the mouse input interface, the power module, the wireless communication module, the fan and the temperature sensor are all connected with the microcontroller; the power module includes a voltage input terminal, a first resistor, a first MOS tube, a third capacitor, a first transistor, The first inductor, the first capacitor, the voltage regulator chip, the DC power supply, the second resistor, the third resistor, the second capacitor and the voltage output terminal, the voltage input terminal is respectively connected to the source of the first MOS tube and one end of the first resistor , the gate of the first MOS transistor is respectively connected to the other end of the first resistor and one end of the third capacitor. The circuit structure of the utility model is relatively simple, the cost is low, the maintenance is convenient, and the safety and reliability of the circuit are high.

Description

Controllable computer all-in-one

technical field

The utility model relates to the field of computer integrated computer circuits, in particular to a controllable computer integrated computer.

Background technique

The all-in-one computer is a new type of market product between desktop computers and notebook computers. It integrates the host part and the display part into a new form of computer. The innovation of this product lies in the high integration of internal components. With the development of wireless technology, the keyboard, mouse and monitor of the all-in-one computer can be wirelessly linked, and the machine has only one power cord. This solves the problem of many and complicated desktop cables that have been criticized for a long time. In the existing and future market, as the share of desktop computers gradually decreases, it will definitely be more precarious after encountering the impact of all-in-one computers, notebooks and netbooks. And the advantages of the all-in-one machine have been accepted by people (it has become popular abroad) and it has become a highlight of their choice.

Figure 1 is the circuit schematic diagram of the power supply part of the traditional controllable computer all-in-one computer. It can be seen from Figure 1 that the power supply part of the traditional controllable computer all-in-one computer uses many components, the circuit structure is complex, and the hardware cost is high. Inconvenient to maintain. In addition, because the power supply part of the traditional controllable computer all-in-one machine lacks the corresponding circuit protection function, such as the lack of the function of preventing signal interference, the safety and reliability of the circuit are poor.

Utility model content

The technical problem to be solved by the present invention is to provide a controllable computer all-in-one computer with a relatively simple circuit structure, low cost, convenient maintenance, and high circuit safety and reliability, aiming at the above-mentioned defects of the prior art.

The technical scheme adopted by the utility model to solve the technical problem is: constructing a controllable computer integrated machine, including a casing and an integrated device, the integrated device includes a keyboard input interface, a mouse input interface, a single-chip microcomputer, a power module, a wireless communication module, touch display screen, fan and temperature sensor, the single chip microcomputer, power supply module, wireless communication module, fan and temperature sensor are all arranged in the casing, and the touch display screen is arranged on the front of the casing, The keyboard input interface, the mouse input interface, the power supply module, the wireless communication module, the fan and the temperature sensor are all connected with the single-chip microcomputer, and the touch display screen is connected with the wireless communication module;

The power module includes a voltage input terminal, a first resistor, a first MOS tube, a third capacitor, a first transistor, a first inductor, a first capacitor, a voltage regulator chip, a DC power supply, a second resistor, and a third resistor , a second capacitor and a voltage output terminal, the voltage input terminal is respectively connected to the source of the first MOS tube and one end of the first resistor, and the gate of the first MOS tube is respectively connected to the first resistor The other end is connected to one end of the third capacitor, the collector of the first transistor is connected to the other end of the third capacitor, the emitter of the first transistor is grounded, and the first MOS transistor is connected to the ground. The drain is respectively connected to one end of the first inductor, one end of the first capacitor, the VIN pin and the EN pin of the voltage regulator chip, the other end of the first capacitor is grounded, and the other end of the first inductor is connected to the ground. The SW pin of the voltage stabilizing chip is connected, the VOUT pin of the voltage stabilizing chip is connected to the DC power supply, the GND pin of the voltage stabilizing chip is grounded, and the FB pin of the voltage stabilizing chip is respectively connected to the DC power supply. One end of the second resistor is connected to one end of the third resistor, the other end of the third resistor is grounded, and the other end of the second resistor is respectively connected to the DC power supply, the positive pole of the second capacitor and the voltage output terminal, The other end of the second capacitor is grounded, and the capacitance value of the third capacitor is 260pF.

In the controllable computer all-in-one computer of the present invention, the power module further includes a first diode, the cathode of the first diode is connected to the gate of the first triode, the The model number of the first diode is L-1822.

In the controllable computer all-in-one computer of the present invention, the power supply module further includes a fourth resistor, one end of the fourth resistor is connected to the drain of the first MOS transistor, and the other end of the fourth resistor is connected to the drain of the first MOS transistor. One end is respectively connected to one end of the first inductor and one end of the first capacitor, and the resistance value of the fourth resistor is 42kΩ.

In the controllable computer integrated machine of the present invention, the first MOS transistor is a P-channel MOS transistor.

In the controllable computer integrated machine of the present invention, the first transistor is an NPN type transistor.

Implementing the controllable computer all-in-one machine of the present invention has the following beneficial effects: since a casing and an integrated device are provided, the integrated device includes a keyboard input interface, a mouse input interface, a single-chip computer, a power supply module, a wireless communication module, and a touch display. screen, fan and temperature sensor; the power module includes a voltage input terminal, a first resistor, a first MOS tube, a third capacitor, a first transistor, a first inductor, a first capacitor, a voltage regulator chip, a DC power supply, a second Resistor, third resistor, second capacitor and voltage output terminal. Compared with the power supply part of the traditional controllable traditional computer all-in-one machine, the power module uses fewer components. Since some components are saved, it can reduce hardware In addition, the third capacitor is used to prevent the interference between the first MOS tube and the first triode, so the circuit structure of the present invention is relatively simple, the cost is low, the maintenance is convenient, and the safety and reliability of the circuit are high. .

Description of drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are just some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.

Fig. 1 is the circuit schematic diagram of the power supply part of the traditional controllable computer all-in-one;

2 is a schematic structural diagram of an embodiment of the controllable computer integrated machine of the present invention;

3 is a schematic structural diagram of an integrated device in the embodiment;

FIG. 4 is a circuit schematic diagram of the power module in the embodiment.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

In the embodiment of the controllable computer integrated machine of the present invention, a schematic structural diagram of the controllable computer integrated machine is shown in FIG. 2 . In FIG. 2, the controllable computer integrated machine includes a casing 1 and an integrated device. FIG. 3 is a schematic structural diagram of the integrated device in this embodiment. As shown in FIG. 2 and FIG. 3 , the integrated device includes a keyboard input interface 2 , a mouse input interface 3 , a single-chip microcomputer 4 , a power supply module 5 , a wireless communication module 6 , a touch display screen 7 , a fan 8 and a temperature sensor 9 , wherein, The single chip 4, the power module 5, the wireless communication module 6, the fan 8 and the temperature sensor 9 are all arranged in the casing 1, the touch screen 7 is arranged on the front of the casing 1, the keyboard input interface 2, the mouse input interface 3, the power supply The module 5 , the wireless communication module 6 , the fan 8 and the temperature sensor 9 are all connected to the single chip 4 , and the touch display screen 7 is connected to the wireless communication module 6 .

The single-chip microcomputer 4 has the advantages of small size, high reliability, strong control ability, low power consumption and high cost performance. The user can insert the keyboard input interface 2 and the mouse input interface 3 correspondingly through the keyboard and the mouse, and input the action signal, the single-chip 4 receives the action signal and recognizes it, and generates an action instruction, which is transmitted to the wireless communication module 6. The touch screen 7 displays actions through the touch screen 7 .

The single-chip microcomputer 4 monitors the temperature in the housing 1 through the temperature sensor 9; when the temperature in the housing 1 is high, the single-chip microcomputer 4 controls the fan 8 to speed up to speed up the heat dissipation, so as to better protect the controllable computer all-in-one. When the temperature in the casing 1 is low, the single-chip microcomputer 4 controls the fan 8 to decelerate to slow down the heat dissipation speed, thereby reducing power consumption.

It is worth mentioning that in this embodiment, the wireless communication module 6 is a Bluetooth module, a WiFi module, a GSM module, a GPRS module, a CDMA module, a CDMA2000 module, a WCDMA module, a TD-SCDMA module, a Zigbee module or a LoRa module. By setting up multiple wireless communication methods, not only the flexibility of wireless communication methods can be increased, but also the needs of different users and different occasions can be met. Especially when the LoRa module is used, the communication distance is long and the communication performance is relatively stable, which is suitable for occasions with high communication quality requirements.

FIG. 4 is a circuit schematic diagram of the power module in this embodiment. In FIG. 4, the power module 5 includes a voltage input terminal Vin, a first resistor R1, a first MOS transistor M1, a third capacitor C3, and a first transistor Q1 , the first inductor L1, the first capacitor C1, the voltage regulator chip U1, the DC power supply VCC, the second resistor R2, the third resistor R3, the second capacitor C2 and the voltage output terminal Vo, wherein the voltage input terminal Vin is respectively connected with the first The source of the MOS transistor M1 is connected to one end of the first resistor R1, the gate of the first MOS transistor M1 is respectively connected to the other end of the first resistor R1 and one end of the third capacitor C3, and the collector of the first transistor Q1 It is connected to the other end of the third capacitor C3, the emitter of the first transistor Q1 is grounded, and the drain of the first MOS transistor M1 is respectively connected to one end of the first inductor L1, one end of the first capacitor C1, and the voltage regulator chip U1. The VIN pin is connected to the EN pin, the other end of the first capacitor C1 is grounded, the other end of the first inductor L1 is connected to the SW pin of the voltage regulator chip U1, and the VOUT pin of the voltage regulator chip U1 is connected to the DC power supply VCC, The GND pin of the voltage regulator chip U1 is grounded, the FB pin of the voltage regulator chip U1 is connected to one end of the second resistor R2 and one end of the third resistor R3 respectively, the other end of the third resistor R3 is grounded, and the other end of the second resistor R2 is connected to the ground. One end is respectively connected to the DC power supply VCC, the positive electrode of the second capacitor C2 and the voltage output end Vo, and the other end of the second capacitor C2 is grounded.

Compared with the power supply part of the controllable traditional computer integrated machine in FIG. 1 , the power supply module 5 uses fewer components, has a simpler circuit structure, and is convenient for maintenance. Since some components are saved, the hardware cost can be reduced. In addition, the third capacitor C3 is a coupling capacitor, which is used to prevent the interference between the first MOS transistor M1 and the first triode Q1, so the safety and reliability of the circuit are high, and the ratio can be achieved with fewer components. Better technical effect of traditional technology.

The function of the coupling capacitor is to transmit the AC signal from the previous stage to the next stage. Coupling methods include direct coupling and transformer coupling. The direct coupling efficiency is the highest, and the signal is not distorted. However, the adjustment of the front and rear operating points is more complicated and involves each other. In order to make the working point of the latter stage not affected by the former stage, it is necessary to separate the former stage and the latter stage in terms of DC, and at the same time, the AC signal can be smoothly transmitted from the former stage to the latter stage, and at the same time The way to accomplish this task is to use capacitive transmission or transformer transmission. They can transmit AC signals and cut off DC, so that the working points of the front and rear stages are not involved with each other. But the difference is that when the capacitor is used for transmission, the phase of the signal is delayed a little, and when the transformer is used for transmission, the high-frequency components of the signal are lost. In general, capacitors are often used as coupling elements when small signals are transmitted, and transformers are often used as coupling elements when large signals or strong signals are transmitted. In the present invention, the third capacitor C3 is used as the coupling element, so that the working point of the latter stage is not affected by the previous stage, that is, the working point of the first transistor Q1 is not affected by the first MOS transistor M1. influences. The third capacitor C3 is an inter-stage coupling capacitor, and its function is to isolate the first MOS transistor M1 from the DC bias circuits of the preceding and following stages of the first triode Q1 to prevent the static operating points of the preceding and subsequent stages from influencing each other. Its working principle utilizes the working principle of inter-stage coupling electricity in the prior art, which will not be described here.

It is worth mentioning that, in this embodiment, the capacitance value of the third capacitor C3 is 260pF. Of course, in practical applications, the capacitance value of the third capacitor C3 can be adjusted according to specific conditions, that is, the capacitance value of the third capacitor C3 can be correspondingly increased or decreased according to specific conditions.

In actual use, the lithium battery power supply voltage is 3.6V, and the lithium battery inputs 3.6V input power through the voltage input terminal Vin; when the control pin of the main control chip inputs a high level to the base of the first transistor Q1, the first MOS The gate of the tube M1 is input with a low level, and the source and drain of the first MOS tube M1 are turned on to supply power to the voltage regulator chip U1. The purpose of boosting output is achieved through the first inductor L1 and the voltage regulator chip U1. The voltage is divided and fed back to the voltage regulator chip U1 through the second resistor R2 and the third resistor R3 in the filter circuit, so that the output voltage of the voltage output terminal Vo is constantly output as 3.8V. When the base of the first transistor Q1 is at a low level, the power supply of the voltage stabilizing chip U1 is disconnected, so that the output is not output.

It is worth mentioning that, in this embodiment, the first MOS transistor M1 is a P-channel MOS transistor, and the first transistor Q1 is an NPN transistor. Of course, in practical applications, the first MOS transistor M1 can also be an N-channel MOS transistor, and the first transistor Q1 can also be a PNP transistor, but the structure of the circuit should also be changed accordingly.

In this embodiment, the power module 5 further includes a first diode D1, and the cathode of the first diode D1 is connected to the gate of the first transistor Q1. The first diode D1 is a current-limiting diode, and is used for current-limiting protection for the base current of the first transistor Q1. The principle of current-limiting protection is as follows: when the base current of the first transistor Q1 is large, the base current of the first transistor Q1 can be reduced through the first diode D1 to keep it in a normal state. The working state will not burn out the components in the circuit due to too much current, so as to further enhance the safety and reliability of the circuit. It is worth mentioning that, in this embodiment, the model of the first diode D1 is L-1822. Of course, in practical applications, the first diode D1 can also use other types of diodes with similar functions.

In this embodiment, the power module 5 further includes a fourth resistor R4, one end of the fourth resistor R4 is connected to the drain of the first MOS transistor M1, and the other end of the fourth resistor R4 is respectively connected to one end of the first inductor L1 and the first end of the first MOS transistor M1. One end of the capacitor C1 is connected. The fourth resistor R4 is a current-limiting resistor, and is used for current-limiting protection for the drain current of the first MOS transistor M1. The principle of current limiting protection is as follows: when the drain current of the first MOS transistor M1 is large, the fourth resistor R4 can reduce the drain current of the first MOS transistor M1 to keep it in a normal working state, while It will not cause the components in the circuit to be burned out due to too much current, so as to further enhance the safety and reliability of the circuit. It is worth mentioning that in this embodiment, the resistance value of the fourth resistor R4 is 42kΩ. Of course, in practical applications, the resistance value of the fourth resistor R4 can be adjusted according to the specific situation, that is, the resistance value of the fourth resistor R4 The resistance value can be increased or decreased accordingly according to the specific situation.

In this embodiment, the keyboard input interface 2, the mouse input interface 3, the single-chip microcomputer 4, the wireless communication module 6, the touch display screen 7, the fan 8 and the temperature sensor 9 are all realized by the structure in the prior art, and the working principle of the It is also the working principle in the prior art, which will not be described here.

In a word, in this embodiment, compared with the power supply part of the traditional controllable traditional computer all-in-one computer, the power module 5 uses fewer components, the circuit structure is simpler, and the maintenance is convenient. Reduce hardware costs. In addition, the power supply module 5 is provided with a coupling capacitor, so the safety and reliability of the circuit are high.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the within the protection scope of the present invention.

Claims (5)

1. A controllable all-in-one computer is characterized by comprising a shell and an integrated device, wherein the integrated device comprises a keyboard input interface, a mouse input interface, a single chip microcomputer, a power supply module, a wireless communication module, a touch display screen, a fan and a temperature sensor, the single chip microcomputer, the power supply module, the wireless communication module, the fan and the temperature sensor are all arranged in the shell, the touch display screen is arranged on the front side of the shell, the keyboard input interface, the mouse input interface, the power supply module, the wireless communication module, the fan and the temperature sensor are all connected with the single chip microcomputer, and the touch display screen is connected with the wireless communication module;

the power supply module comprises a voltage input end, a first resistor, a first MOS tube, a third capacitor, a first triode, a first inductor, a first capacitor, a voltage stabilizing chip, a direct current power supply, a second resistor, a third resistor, a second capacitor and a voltage output end, wherein the voltage input end is respectively connected with a source electrode of the first MOS tube and one end of the first resistor, a grid electrode of the first MOS tube is respectively connected with the other end of the first resistor and one end of the third capacitor, a collector electrode of the first triode is connected with the other end of the third capacitor, an emitter electrode of the first triode is grounded, a drain electrode of the first MOS tube is respectively connected with one end of the first inductor, one end of the first capacitor, a VIN pin and an EN pin of the voltage stabilizing chip, the other end of the first capacitor is grounded, and the other end of the first inductor is connected with the SW pin of the voltage stabilizing chip, the VOUT pin of steady voltage chip with DC power supply connects, the GND pin ground connection of steady voltage chip, the FB pin of steady voltage chip respectively with the one end of second resistance and the one end of third resistance are connected, the other end ground connection of third resistance, the other end of second resistance respectively with DC power supply, the positive pole and the voltage output end of second electric capacity are connected, the other end ground connection of second electric capacity, the capacitance value of third electric capacity is 260 pF.

2. The all-in-one computer as claimed in claim 1, wherein the power module further comprises a first diode, a cathode of the first diode is connected with a gate of the first triode, and the first diode is L-1822.

3. The all-in-one computer capable of controlling according to claim 2, wherein the power module further comprises a fourth resistor, one end of the fourth resistor is connected with the drain electrode of the first MOS transistor, the other end of the fourth resistor is respectively connected with one end of the first inductor and one end of the first capacitor, and the resistance value of the fourth resistor is 42k Ω.

4. The all-in-one computer as claimed in any one of claims 1 to 3, wherein the first MOS transistor is a P-channel MOS transistor.

5. A pc-combo according to any of the claims 1-3, characterized in that the first transistor is an NPN transistor.

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