WO2013044477A1

WO2013044477A1 - Thin client power control method, device and system applying the device

Info

Publication number: WO2013044477A1
Application number: PCT/CN2011/080345
Authority: WO
Inventors: 花锦; 何庆建
Original assignee: 华为终端有限公司
Priority date: 2011-09-29
Filing date: 2011-09-29
Publication date: 2013-04-04
Also published as: CN102439533A

Abstract

Disclosed are a thin client power control method, a device and a system applying the device, comprising an electric connector utilized for receiving power; a first output interface connected with the electric connector and utilized for supplying power to a display; a second output interface connected with the electric connector and utilized for supplying power to the power supply of the thin client; a thin client control module in series connection between the electric connector and the first output interface, utilized for collecting a current signal inputted to the first output interface and transforming the current signal into a control signal for controlling the thin client to be started or closed. When the device is utilized, the thin client can be controlled cooperatively by operating the switch of the display; and because the display is generally arranged at the place easy to be contacted, the thin client can be controlled to be started or closed conveniently even though the thin client is arranged at the place not easy to be contacted.

Description

Thin client switch machine control method, device and system using the same

TECHNICAL FIELD The present invention relates to the field of thin client technologies, and in particular, to a thin client switch control method, apparatus, and system using the same.

Background technique

The current cloud terminal product form is mainly composed of thin client, display, keyboard and mouse. The thin client uses software and data from the network server to replace the existing computer host, which can achieve environmental protection, energy saving and system reduction. Maintain workload and ensure the security of stored data.

Existing thin clients and display power switches are independent, ie thin clients and displays are turned on or off by different switch controls. Thin clients may be wall-mounted behind the display or placed in hard-to-reach corners, such as under a table, due to their small size. This is inconvenient when the thin client needs to be turned on or off.

Summary of the invention

In view of this, an embodiment of the present invention provides a method and apparatus for controlling a thin client switch machine, and a system for applying the same, and the thin client can be controlled to be turned on or off by operating the display switch.

The technical solution provided by the embodiment of the present invention is as follows:

A thin client switch control device includes:

An electrical connector for receiving power;

a first output interface connected to the electrical connector and for supplying power to the display; connected in series between the electrical connector and the first output interface for collecting a current signal input to the first output interface And converting the current signal into a thin client control module that controls a thin client to turn on or off a control signal.

A thin client system, comprising: a thin client and a display, further comprising: a thin client switch machine control device, wherein the thin client switch machine control device comprises:

An electrical connector for receiving power; a first output interface connected to the electrical connector and for supplying power to the display; connected in series between the electrical connector and the first output interface for converting a current signal of the first output interface into Thin client control module for thin client control signals.

A thin client switch control method includes:

Collecting a current signal input to the display, and converting the current signal into a voltage signal; amplifying the voltage signal, and converting the amplified voltage signal into an analog voltage signal into a digital voltage signal;

Comparing the value of the digital voltage signal with a preset threshold;

When the value of the voltage signal is greater than or equal to a preset threshold, generating a power-on signal and transmitting the signal to the thin client;

When the value of the voltage signal is less than a preset threshold, a shutdown signal is generated and sent to the thin client. It can be seen from the above technical solution that the thin client switch machine control device can control the thin client in linkage by operating the switch of the display, and since the display is usually disposed in a place that can be easily accessed by people, even if the thin client is placed The corners of the contact can also be used to power on or off the thin client.

BRIEF DESCRIPTION OF THE 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 embodiments or the description of the prior art will be briefly described below, and obviously, in the following description The drawings are only some of the embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any creative work.

1 is a schematic structural diagram of a thin client switch control device according to an embodiment of the present invention;

2 is a schematic structural diagram of a control device for a thin client switch machine according to another embodiment of the present application;

FIG. 3 is a schematic structural diagram of a thin client switch control device according to another embodiment of the present invention; FIG.

4 is a schematic structural diagram of a thin client switch control device according to another embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a thin client system according to another embodiment of the present invention; FIG. FIG. 6 is a schematic structural diagram of a thin client system according to another embodiment of the present invention; FIG. 7 is a schematic flowchart diagram of a method for controlling a thin client switch machine according to another embodiment of the present invention.

detailed description

In order to make those skilled in the art better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. The embodiments are only a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of the present invention.

Existing thin clients and display power switches are independent, ie thin clients and displays are turned on or off by different switch controls. Usually, the display is suspended in a wall or placed on a table and other conspicuous positions, while the thin client may be wall-mounted behind the display or placed in a corner that is not easily accessible due to its small size and indoor layout requirements. Under the table, etc., when it is necessary to turn on or off the thin client, it is more inconvenient.

Through the research on the prior art, the applicant found that: the position of the display setting can be easily accessed by people, so that if the thin client can be turned on or off through the display switch, the thin client can be solved due to the placement of the thin client. The problem that the client is inconvenient to boot or shut down. The term "and/or" in this context is merely an association that describes the associated object, indicating that there can be three relationships, for example, A and / or B, which can mean: A exists separately, and both A and B exist, exist alone B these three situations. In addition, the character " in this article" generally means that the contextual object is an "or" relationship. One embodiment:

FIG. 1 is a schematic structural diagram of a thin client switch control device according to an embodiment of the present invention. As shown in FIG. 1, FIG. 5 is a display, and 6 is a thin client processor. The thin client switch control device includes: an electrical connector 1, a first output interface 2, and a thin client control module 4.

The electrical connector 1 can be a common plug for connection to a socket to power the display and the thin client. The first output interface 2 is connected to the electrical connector 1 and is connected to the display 5 for supplying power to the display 5. In the embodiment of the present application, as shown in FIG. 1, any one of the power lines of the electrical connector 1 is directly connected to one input end of the first output interface 2.

The thin client control module 4 is connected in series on another power line between the first output interface 2 and the electrical connector 1, and the thin client control module 4 can collect the current input from the electrical connector 1 to the first output interface 2. The signal, and the collected current signal can be converted into a control signal of the thin client, and the thin client processor 6 is controlled to be turned on or off.

In the embodiment of the present application, the first output interface 2 can be directly connected to the display 5. In addition, the first output interface 2 can also be a socket. In practical applications, the display 5 can use the existing plug and the first connector. The output interface 2 is connected.

Another embodiment:

In the embodiment of the present application, as shown in FIG. 2, the thin client control module 4 includes: a current detecting module 41, an operational amplification module 45, an analog-to-digital conversion module 42, a voltage comparison module 43, and a control signal generating module 44. The current detecting module 41 is connected in series on a power line between the electrical connector 1 and the first output interface 2, and functions to collect a current signal input to the display 5 through the first output interface 2, and collect the collected current. The signal is converted into a voltage signal.

Generally, the voltage signal detected by the current detecting module 41 is relatively weak. In order to facilitate the subsequent comparison of the voltage signal with the preset threshold, as shown in FIG. 2, the analog-to-digital conversion module 42 and the voltage comparison module 43 are also connected in series. An operational amplifier circuit 45 is provided for amplifying the voltage signal obtained by the current detecting module 41.

In addition, since the voltage signal detected by the current detecting module 41 is an analog signal, it is also required to convert the voltage signal into a digital signal before analyzing the voltage signal. As shown in FIG. 2, the analog-to-digital conversion module 42 is connected in series between the operational amplification circuit 45 and the voltage comparison module 43 for converting the analog voltage signal detected by the current detection module 41 into a digital voltage signal. The voltage comparison module 43 is configured to compare the value of the digital voltage signal with a preset threshold, and according to the comparison result, whether the display 5 is in the power-on state or the power-off state or the standby state can be determined. Due to the display In the embodiment of the present application, the preset threshold is set to the voltage value detected when the display is turned on, so that if the current voltage signal is greater than or equal to the preset threshold, the display may be determined to be in the power-on state. If the current voltage signal is less than the preset threshold, you can determine that the display is off or in standby. According to the comparison result of the voltage comparison module 43 described above, the state in which the display is currently located can be judged, and then the thin client can be operated according to the state of the display. As shown in FIG. 2, the input of the control signal generating module 44 is connected to the output of the voltage comparison module 43, and the output of the control signal generating module 44 is connected to the thin client processor 6, wherein: When the value of the digital voltage signal is greater than or equal to the preset threshold, the control signal generating module 44 generates a power-on signal and sends it to the thin client processor 6, and the thin client processor 6 performs a power-on operation according to the power-on signal; when the converted digital voltage signal When the value is less than the preset threshold, the control signal generating module 44 generates a shutdown signal and transmits it to the thin client processor 6, and the thin client processor 6 performs a shutdown operation according to the shutdown signal. In addition, in the present application, as shown in FIG. 1 and FIG. 2, the thin client switch control device may further include: a casing 100, wherein: and the thin client control module 4 are disposed in the casing 100, and are electrically connected The first output interface 2 and the third output interface 3 are disposed outside the outer casing 100. In addition, in the embodiment of the present application, in order to facilitate the connection between the thin client switch control device and the thin client, the control signal production module 44 and the thin client processor 6 can also pass the pluggable data interface. Connected, such as USB interface or asynchronous serial port.

Yet another embodiment: In the previous embodiment, the thin client control module 4 is connected between the thin client processor 6 and the power source, so that the thin client processor 6 is electrically connected to the high voltage power supply, and the high voltage power supply is not only damaged. The electronic components on the thin client processor 6 and the risk of electric shock if someone touches the thin client processor. In order to achieve isolation of the thin client processor from the high voltage power supply, in the embodiment of the present application, the current detecting module 41 in the thin client control module 4 can use a Hall sensor to convert the current signal into a voltage signal by using the Hall effect. And can isolate the thin client processor from the high voltage power supply. In addition, in other embodiments of the present application, the current detecting module 41 can also adopt a conventional resistance measuring method, that is, the current detecting module 41 can include: a precision sampling resistor and a voltage detecting device, wherein the precision sampling resistor is connected in series with the electrical connector 1 and On a power line between the first output interface 2, the voltage measuring device is used to measure the voltage change of the precision sampling resistor. When the current input to the display 5 changes, the voltage across the precision sampling resistor changes. At this time, the operational amplifier circuit 45 needs to use an optocoupler isolation operational amplifier circuit, which can isolate the thin client processor from the high voltage power supply.

Yet another embodiment:

FIG. 3 is a schematic structural diagram of a thin client switch control device according to still another embodiment of the present invention. The thin client power on/off control unit not only supplies power to the display, but also provides direct power to the thin client. As shown in FIG. 3, 7 is a thin client power supply. In the embodiment of the present application, the thin client switch control device further includes: a second output interface 3, a second output interface 3 and two of the electrical connector 1. A power cord is connected and connected to the thin client power supply 7 to supply power to the thin client. The second output interface 3 can be directly connected to the thin client power supply 7. In addition, the second output interface 3 can also be a socket, so that the thin client power supply 7 can be connected to the second output interface 3 using an existing plug. In the embodiment of the present application, the thin client processor 6 can be connected to the thin client power supply 7. When the thin client processor 6 receives the shutdown signal, the thin client power supply 7 can be controlled to be turned off, thereby implementing shutdown; After receiving the power-on signal, the thin client processor 6 can control the thin client power supply 7 to be turned on, thereby implementing booting.

Yet another embodiment:

FIG. 4 is a schematic structural diagram of a thin client switch control device according to still another embodiment of the present invention. As shown in FIG. 4, the thin client switch control device includes: an electrical connector 1, a first output interface 2, a second output interface 3, a thin client control module 4, and a three-port coupler 8, wherein: a thin client The machine control module 4 includes: a current detecting module 41, an analog to digital conversion module 42, a voltage comparison module 43, and a control signal generating module 44. As shown in FIG. 4, the three-port coupler 8 includes: a three-hole plug 81 and a three-hole socket 82, wherein: the first plug 811 and the second plug 812 of the three-hole plug 81 and the two power lines of the electrical connector 1, respectively Connected, the first output interface 2 is connected to the second plug 812 and the third plug 813, respectively; the first jack 821 and the second jack 822 of the three-hole jack 82 are respectively connected to the two power lines of the thin client power supply 7 Connected, the current detecting module 41 is connected in series between the second jack 822 and the third jack 823. In the embodiment of the present application, the three-port coupler 8 can insert three plugs of the three-hole plug 81 into three jacks of the three-hole plug 82, and the first plug 811 corresponds to the first jack. 821 , the second plug 812 corresponds to the second jack 822 , and the third plug 813 corresponds to the third jack 823 . The three-port coupler 8 can be used to separate the electrical connector 1 and the first output port 2 from the second output port 3 and the thin client control module 4, so that the electrical connector 1 can be used during production. The first output port 2 and the three-hole plug 81 are disposed on the power line of the display 5, and the two output ports 3, the thin client control module 4, and the three-hole socket 82 can be disposed in the chassis of the thin client. Moreover, in actual use, the positions of the three-hole plug 81 and the three-hole socket 82 can be interchanged without affecting the use of the three-port coupler 8.

Yet another embodiment:

The embodiment of the present application also provides a thin client system. As shown in FIG. 5, it is a schematic structural diagram of a thin client system provided by an embodiment of the present application. The thin client system comprises: a display 5, a thin client 10 and a thin client switch control device 9, wherein: the display 5 and the thin client 10 are connected to a power source via a thin client control switch control device 9 The components of the client power switch control unit 9 and the connection relationship between the various components therein have been described in detail in the above embodiments, and are not described herein.

In the thin client system provided by the embodiment of the present application, the thin client switch control device can detect and collect the current signal input into the display, and compare the collected current signal with a preset threshold, and determine according to the comparison result. The status of the display (including: power-on state, standby state, and power-off state), and then control the thin client to power on or off according to the current state of the display. In actual use, the thin client can be controlled in linkage by operating the switch of the display, and since the display is usually placed in a place that people can easily reach, even if the thin client is placed It is also convenient to turn on or off the thin client in a corner that is not easily accessible.

Still another embodiment: In the previous embodiment, the thin client switch control device 9 of the thin client system provided by the present application can be connected as a separate unit between the display and the thin client. In the actual product production process, the thin client switch control device 9 can also be split into two parts and set in the display power line and in the thin client.

In the embodiment of the present application, first, as shown in FIG. 4, the thin client switch control device may further include: a three-port coupler 8 composed of a three-hole plug 81 and a three-hole socket 82. Next, as shown in FIG. 6, the three-hole plug 81 in the three-port coupler 8 is disposed on the power line of the display, and the electrical connector 1 serves as a power plug of the display 5, and the thin client control module 4 is disposed on the thin client 10. The inside and the three-hole socket 82 are disposed outside the thin client 10. The thin client switch control device is divided into two parts, and the two parts are respectively disposed on the display power line and the thin client, so that the thin client switch control device can be integrated into the display and the thin client, so that As a product, the system no longer has a thin client switch control device, which reduces the number of devices. In addition, when installing the thin client system, you can directly connect the three-hole plug to the three-hole socket. Easy to operate. In addition, in the embodiment of the present application, the analog-to-digital conversion module 42, the voltage comparison module 43, the control signal generating module 44, and the operational amplification circuit 45 in the thin client control module 4 located inside the thin client may be separately used. Modules can also be embedded in the processor of the thin client. When the analog-to-digital conversion module 42, the voltage comparison module 43, the control signal generation module 44, and the operational amplification circuit 45 are embedded in the processor of the thin client, the processor of the thin client will directly communicate with the high voltage power supply through the current detection module. Connection, there is a danger of electric shock when you touch the main processor. In order to achieve isolation between the high voltage power supply and the main processor, in the embodiment of the present application, when the analog to digital conversion module, the operational amplification circuit, and the control signal generation module are embedded in the processor of the thin client, the operational amplification circuit Optocoupler op amps are used to isolate the high voltage power supply from the main processor for personal safety. Still another embodiment: FIG. 流程 is a schematic flowchart diagram of a method for controlling a thin client switch machine according to another embodiment of the present invention. The thin client switch control method can be applied to the thin client switch control device in the above embodiment, and as shown in FIG. 7, the method includes the following steps:

S701: Collect a current signal input to the display, and convert the current signal into a voltage signal.

In the embodiment of the present application, the current signal in the collection display is realized by serially connecting the current detecting module on the power line of the display. When the display is switched on or off, or when the machine is switched on or off, the current on the display power line will change, and the current detection module will detect the current change. Moreover, after the current signal is acquired, the current signal is also converted into a voltage signal to facilitate the quantization process of the current signal in a subsequent step.

S702: Amplify the voltage signal. Since the current signal detected from the display power line is relatively weak, the converted voltage signal is also weak. In order to facilitate the quantization of the voltage signal, the voltage signal needs to be amplified.

S703: Convert the voltage signal after being amplified into an analog voltage signal into a digital voltage signal. In addition, the voltage signals obtained by the acquisition are generally analog signals. In order to facilitate the subsequent comparison of the voltage signal with a preset threshold, it is necessary to convert the analog signal into a digital signal.

S704: Compare the value of the digital voltage signal with a preset threshold.

In the embodiment of the present application, the preset threshold of the voltage signal selects the value of the voltage signal corresponding to the current signal when the display is in the power-on state, so that by comparing the detected digital voltage signal with a preset threshold, it can be determined. The current state of the display, wherein: if the current voltage signal is greater than or equal to the preset threshold, it may be determined that the display is in the power-on state, and step S705 is performed; if the current voltage signal is less than the preset threshold, it may be determined that the display is in shutdown or standby In the state, step S706 is performed. S705: Generate a power-on signal and send it to the thin client to control the thin client to boot.

S706: Generate a shutdown signal and send it to the thin client to control the thin client to perform the shutdown operation. In the embodiment of the present application, after receiving the power-on signal or the power-off signal, the thin client can control the power of the thin client to be turned off or on to control the thin client to be turned on or off. A person skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided by the present invention, it should be understood that the disclosed system, apparatus, and method may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed. In addition, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical, mechanical or otherwise.

The units described as separate components may or may not be physically separate, and the components displayed as the units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may contribute to the prior art or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium. A number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the methods described in various embodiments of the present invention. The aforementioned deposit The storage medium includes: a USB flash drive, a removable hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like, which can store program codes.

The above description is only a preferred embodiment of the present invention, and those skilled in the art can understand or implement the present invention. Various modifications to these embodiments are obvious to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not intended to be limited to the embodiments shown herein, but the scope of the invention is to be accorded

Claims

Rights request

What is claimed is: 1. A thin client switch control device, comprising: an electrical connector for receiving power; a first output interface coupled to the electrical connector and for powering a display; Between the electrical connector and the first output interface, for collecting a current signal input to the first output interface, and converting the current signal into a thin client that controls a thin client to turn on or off a control signal Machine control module.

2. The device according to claim 1, wherein the thin client control module comprises: a current detecting module, an operational amplification module, an analog to digital conversion module, a voltage comparison module, and a control signal generating module, wherein: The current detecting module is connected in series to any one of the power lines between the electrical connector and the first output interface for converting a current signal input to the display through the first output interface into a voltage signal;

The operational amplifier circuit is connected in series between the current detecting module and the analog-to-digital conversion module for amplifying the voltage signal; the analog-to-digital conversion module is configured to convert the amplified voltage signal into a digital voltage signal The voltage comparison module is configured to compare the value of the digital voltage signal with a preset threshold; and the control signal generating module is configured to generate a power-on signal and send when the value of the digital voltage signal is greater than or equal to a preset threshold To the thin client, when the value of the digital voltage signal is less than a preset threshold, a shutdown signal is generated and sent to the thin client.

3. The apparatus according to claim 2, wherein the current detecting module comprises a precision resistor and a voltage measuring device, and the operational amplifier circuit is an optocoupler isolated operational amplifier.

4. Apparatus according to claim 2 wherein said current sensing module is a Hall sensor.

5. The device according to claim 1, further comprising: A second output interface coupled to the electrical connector and for powering the power of the thin client.

6. The apparatus of claim 4, further comprising: a three port coupler, the three port coupler comprising: a three-head plug and a three-hole jack, wherein:

The first plug of the three-head plug is connected to one power line of the electrical connector, and the second plug is connected to another power line of the electrical connector, the third plug and the first plug One power line of the output interface is connected; another power line of the first output interface is connected to the first plug;

The first jack and the second jack of the three-hole socket are respectively connected to two power lines of the thin client power source, and the control signal generating module is connected in series between the second jack and the third jack .

7. The apparatus according to claim 1, wherein an output end of the thin client control module is connected to the thin client through a pluggable data interface.

8. A thin client system, comprising: a thin client and a display, further comprising: a thin client switch control device, wherein the thin client switch control device comprises: an electrical connection for receiving power a first output interface coupled to the electrical connector and for powering the display;

Connected between the electrical connector and the first output interface for converting a current signal of the first output interface into a thin client control module of a thin client control signal.

The system according to claim 8, wherein the thin client control module comprises: a current detecting module, an operational amplification module, an analog to digital conversion module, a voltage comparison module, and a control signal generating module, wherein: The current detecting module is connected in series to any one of the power lines between the electrical connector and the first output interface for converting a current signal input to the display through the first output interface into a voltage signal;

The operational amplifier circuit is connected in series between the current detecting module and the analog-to-digital conversion module for amplifying the voltage signal; the analog-to-digital conversion module is configured to convert the amplified voltage signal into a digital voltage signal ; The voltage comparison module is configured to compare the value of the digital voltage signal with a preset threshold; and the control signal generating module is configured to generate a power-on signal and send the signal to the start value when the value of the digital voltage signal is greater than or equal to a preset threshold The thin client generates a shutdown signal and sends it to the thin client when the value of the digital voltage signal is less than a preset threshold.

10. The system according to claim 9, wherein the current detecting module is a precision resistance and voltage measuring device, and the operational amplifying circuit is an optocoupler isolated operational amplifier.

11. The system of claim 9 wherein the current sensing module is a Hall sensor.

12. The system of any of claims 8-11, wherein the thin client power on/off control device is disposed within a chassis of the thin client.

The system according to claim 12, wherein the analog-to-digital conversion module, the voltage comparison module, and the control signal generation module in the thin client control module are embedded in a main processor of the thin client .

14. The system according to claim 8, wherein the thin client switch control device further comprises: a second output connected to the electrical connector and configured to supply power to the thin client interface.

15. The system according to claim 14, wherein the thin client switch control device further comprises: a three port coupler, the three port coupler comprising: a three-head plug and a three-hole socket, wherein: The first plug of the three-head plug is connected to one power line of the electrical connector, and the second plug is connected to another power line of the electrical connector, the third plug and the first plug One power cable of the output interface is connected; the other power cable of the first output interface is connected to the first plug; the first jack and the second jack of the three-hole socket are respectively associated with the thin client Two power lines of the machine power source are connected, and the control signal generating module is connected in series between the second jack and the third jack.

16. The system of claim 15 wherein: said electrical connector and said three A head jack is disposed on a power line of the display, the thin client control module is disposed in a chassis of the thin client, and the three-hole socket is disposed outside a chassis of the thin client.

A thin client switch control method, which is applied to the thin client switch control device according to any one of claims 1-7, characterized in that it comprises:

Comparing the value of the digital voltage signal with a preset threshold;

When the value of the voltage signal is greater than or equal to a preset threshold, generating a power-on signal and transmitting the signal to the thin client, and controlling the thin client to perform a booting operation;

When the value of the voltage signal is less than a preset threshold, a shutdown signal is generated and sent to the thin client, and the thin client is controlled to perform a shutdown operation.