JP7284798B2 - Device control system and device control method - Google Patents

Description

The present invention relates to a remote control system and remote control method using low power communication means. More specifically, the present invention provides a device that is installed in a location where it is difficult to ensure power supply or communication coverage, and a device that is difficult to remotely control due to lack of system or hardware/software resources. The present invention relates to a device control system and device control method using low-power communication means for remote control using text messages.

In Japan, the installation of fire alarms is obligatory. Also, although not mandatory, a fair number of gas leak alarms are installed for safety. Such fire alarms or gas leak alarms are provided with hardware capable of outputting a simple alarm sound and voice notification together with a fire detection sensor, gas leak detection sensor or carbon monoxide detection sensor. Some alarms require low power operation as they are battery operated.

Alternatively, storage batteries, fuel cells, solar power generation equipment, electric vehicles, etc. may be placed outside the communication coverage of access points, so Internet of Things (IoT) technology is used. It is often impossible to apply new technologies such as remote control.

Since a considerable number of the devices described above are in widespread use, it is expected that application of remote control to the devices described above will have extremely high utilization value. For example, a considerable number of installed fire alarms or gas leak alarms can be used to issue emergency warnings of disasters and disasters, and control signals can be sent to existing devices that are not connected to communication lines. If we could add a simple communication device to control the cost of electricity usage and control the timing so that electricity is stored and discharged when needed to reduce peak electricity consumption, the utility value of the device would greatly increase. .

However, when using short-range wireless communication such as Wi-Fi (registered trademark) and Bluetooth (registered trademark), which are widely used these days, install a separate gateway near the device to be operated. Since it has to be done, there will be a big restriction on utilization.

Thus, remote control can be applied to legacy devices that have few hardware/software resources, require low power operation, or must be installed in locations lacking communication coverage. Along with this, there is an increasing need to develop a device that does not require a gateway to be installed near the device.

SUMMARY OF THE INVENTION The present invention has been proposed to solve the above-described problems, and an object of the present invention is to reduce hardware/software by utilizing SMS (Short Message Service) processed to improve security. To provide a device control system capable of applying remote control to a device that must be installed in a place that has only resources or cannot secure communication coverage or power supply.

Another object of the present invention is to provide a device using a low-power communication means capable of efficient low-power operation of equipment by applying an adaptive idle mode using the above-described security-processed SMS. is to provide a control system for

In order to solve the above-described problems, a device control system according to a first aspect of the present invention includes a cloud server and a device that receives an SMS message from the cloud server, the cloud server receiving a notification message and an encryption unit for creating an encrypted notification message and an encrypted control message by encrypting a control message; and sending the SMS message including at least one of the encrypted notification message and the encrypted control message to the device. a transmitter for transmitting, the device includes a receiver for receiving the SMS message from the cloud server, a decoder for decoding the SMS message received by the receiver, and after decoding by the decoder includes the notification message, outputting the notification message to the outside; and setting operation of the device based on the control message when the SMS message decoded by the decoding unit includes the control message and an output that causes the

The output unit may output voice, text, image, or video corresponding to the notification message.

The encryption unit calculates an offset value based on at least part of a number included in device identification information for identifying the device, and arranges the notification message or the control message at a position corresponding to the offset value. The encrypted notification message or the encrypted control message may be created.

The encryption part is included in the notification message or the control message in a direction corresponding to a numerical value at a specific position in the device identification information, between a forward direction and a reverse direction of a character string included in the SMS message. The encrypted notification message or the encrypted control message may be created by arranging character strings.

When receiving an emergency message notifying that there is an emergency situation from an external server, the transmitting unit transmits the encrypted notification message corresponding to the emergency message at a second time interval corresponding to a preset first time interval. Alternatively, the SMS message including the encrypted control message may be transmitted, and the receiving unit may perform an operation of receiving the SMS message at each of the first time intervals.

The transmitting unit transmits to the device the encrypted control message including a setting value of a time interval for the device to execute processing for receiving the SMS message, and the output unit transmits the encrypted control message received by the receiving unit. A time interval for performing the operation of receiving the SMS message by the receiving unit may be changed based on the set value of the time interval included in the encryption control message.

The device may include at least one of a fire or gas leak alarm, a battery, a fuel cell, a solar power plant, a power-based device, or a shared device used by multiple people.

The device may include a removable communication module.

The device further has a memory section including a main memory area and a sub-memory area, and the output section outputs second data of a process corresponding to first data related to a specific process stored in the main memory area to the When stored in the sub-memory area, processing based on the second data stored in the sub-memory area may be executed.

If the second data is stored in the sub-memory area at the time when the receiving unit receives the update firmware from the cloud server, the output unit outputs the first data stored in the main memory area. The second data stored in the sub-memory area may be updated without updating the data.

A device control method according to a second aspect of the present invention includes the steps of: creating an encrypted notification message and an encrypted control message by a cloud server encrypting the notification message and the control message; , sending an SMS message including at least one of the encrypted notification message and the encrypted control message; and if the decrypted SMS message includes the notification message, the device transmits the notification message. outputting to the outside and, if the control message is included in the decoded SMS message, the device performing a setting operation of the device based on the control message.

Other specifics of the embodiments are included in the detailed description and drawings.

Therefore, the control system according to the present invention transmits the control signal to be transmitted in the form of encrypted SMS, and can be installed in a place having few hardware/software resources or lacking communication coverage. Highly secure remote control can be provided for devices that must be controlled.

In addition, the present invention uses a low-power communication means that enables efficient low-power operation of the device by utilizing the above-described SMS processed to increase security and applying an adaptive idle mode. It is possible to provide a control system that

The effects of the present invention are not limited by the contents exemplified above, and various effects are included in the present specification.

1 is a schematic diagram of a control system using low power communication means according to an embodiment of the present invention; FIG. 1 is a block diagram for a cloud server according to an embodiment of the present invention; FIG. FIG. 4 is an exemplary diagram of an SMS packet according to comparative examples and embodiments of the present invention; FIG. 4 is an illustrative diagram of OTA processing according to an embodiment of the present invention; FIG. 4 is an exemplary diagram of utilization of a control system according to an embodiment of the present invention; FIG. 4 is an exemplary diagram of utilization of a control system according to an embodiment of the present invention; FIG. 4 is an exemplary diagram of utilization of a control system according to an embodiment of the present invention; FIG. 4 is a schematic diagram for explaining a control method using low power communication means according to an embodiment of the present invention; FIG. 9 is a flow chart for explaining various processing steps in FIG. 8;

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The present invention, however, should not be construed as limited to the examples disclosed hereinafter, which may be embodied in many different forms and the following examples will provide a complete disclosure of the invention and It is provided to fully convey the scope of the invention to those skilled in the art. Also, for convenience of explanation, the sizes of components may be exaggerated or reduced in the drawings.

However, the following examples are provided so that the invention may be fully understood by those of ordinary skill in the art, and may be modified in various other forms, The scope of the present invention is not limited to the examples described later.

On the other hand, throughout the specification, "including" a certain component does not exclude other components unless otherwise specified, and may further include other components. means. In addition, the terms ``-part'' and ``-module'' described in the specification mean a unit that processes at least one function or operation, which is hardware, software, or a combination of hardware and software. may be realized by

The above objects, features and advantages will be further clarified by the following detailed description in conjunction with the accompanying drawings, which will facilitate the technical idea of the invention for those having ordinary knowledge in the technical field to which the invention pertains. could be implemented in

The respective features of the various embodiments of the present invention can be partially or wholly combined or combined with each other, and can be technically interlocked and driven in various ways, as those skilled in the art can fully appreciate. Yes, each embodiment may be implemented independently of each other, or may be implemented together in conjunction with each other.

In the present invention, devices according to various embodiments include fire or gas leak alarms (i.e. fire alarms or gas leak alarms), photovoltaic installations, storage batteries, fuel cells, electrical power devices (e.g. electric vehicles). ), or at least one shared device used by multiple people.

A control system according to an embodiment of the present invention will be described below with reference to FIG. FIG. 1 is a schematic diagram of a control system using low power communication means according to one embodiment of the present invention.

The control system using the low-power communication means shown in FIG. It is a system that can apply remote control to devices that must be installed in places where power cannot be secured. Here, the environment where it is difficult to secure the connection with the power supply/communication line is, for example, the place where the power supply/communication line is not provided, the remote area where the construction of the communication/power supply line is not done, such as mountains and coasts, and the cost Locations where power/communication lines are not provided due to the above problems, or where power/communication lines are suddenly cut off in emergency situations.

Referring to FIG. 1, a control system using low power communication means may include a device 100, a cloud server 200, and a base station 300. FIG. The control system of the present invention may send SMS messages to devices 100 corresponding to unique identification numbers pre-stored in the system.

The device 100 has few hardware/software resources, is installed in a place where it is difficult to secure a connection with a communication circuit or a power source, or is moved to a place where a connection with a communication circuit or a power source cannot be secured. It is a must-have device. For example, as illustrated in FIGS. 5 to 7, the device 100 includes various alarms such as gas leak alarms and fire alarms, shared transportation means (for example, smart kickboards (scooters)), smart umbrellas, and smart bicycles. Devices provided for shared services that utilize IoT technology such as storage batteries, fuel cells, solar power generation equipment, or electric vehicles installed in remote locations as power sources for virtual power plants (VPP) There may be.

More specifically, referring to FIG. 2, the device 100 includes a transceiver 110, a power controller 120, an encryption/decryption unit 130, an output unit 140, and a memory unit 150 comprising a main memory area 151 and a sub-memory area 152. may contain.

The transmitting/receiving unit 110 receives notification messages or control messages from the cloud server 200 .

Meanwhile, the power controller 120 controls the power of the device 100 in adaptive idle mode. In this case, the adaptive idle mode may, for example, power down at least some elements of device 100 to minimize power consumption of device 100 . However, when the device 100 wakes up at each time interval set in the adaptive idle mode and power is supplied again to the elements to which the power supply was stopped, It is possible to receive SMS messages from the cloud server 200 and perform control by SMS.

The encryption/decryption unit 130 may decrypt the notification message or control message encrypted by the cloud server 200 and, for example, encrypt transmission data generated by the device 100 . In this case, the decryption method is the reverse of the encryption method in the server, and will be described later in the explanation of the encryption method of the cloud server 200 .

The output unit 140 outputs a notification message in the form of voice, text, image, or animation, or changes the control or adaptive idle mode setting information requested by the user. Output unit 140 outputs the notification message to the outside when the SMS message decrypted by encryption/decryption unit 130 includes the notification message, and outputs the notification message to the outside when the SMS message decrypted by encryption/decryption unit 130 includes the control message. , causes the device 100 to perform a configuration operation based on the control message. The output unit 140 changes the time interval at which the transceiver 110 executes the operation of receiving the SMS message based on the set value of the time interval included in the encrypted control message received by the transceiver 110, for example.

The output unit 140 can perform updated processing using the sub-memory area 152 described above. Referring to FIG. 4, the main memory area 151 stores messages or data corresponding to various processes (process a, process b, process c, and process d). At this time, the contents of various processes may need to be changed.

For example, processing a assumes a situation in which the notification message is changed to "carbon monoxide leaked" when the notification message is "gas leaked". In this case, the output unit 140 does not delete the notification message of the process a in the main memory area 151, and saves the modified notification message "carbon monoxide leaked" as the process a' in the sub-memory area 152. . By doing so, the cloud server 200 can change the content of the process executed by the output unit 140 by OTA (Over The Air) via a wireless communication line. In this case, the output unit 140 confirms whether or not the process corresponding to the main memory area 151 is saved in the sub-memory area 152, and if it determines that the process is saved in the sub-memory area 152, the sub-memory The contents saved in area 152 may be preferentially processed.

If the cloud server 200 intends to update only part of the firmware OTA, the cloud server 200 will send the update firmware to the device 100 . If the second data is stored in the sub-memory area 152 at the time when the transmitting/receiving unit 110 receives the update firmware from the cloud server 200, the output unit 140 outputs the first data stored in the main memory area 151. Instead of updating, the second data stored in the sub-memory area 152 may be updated. That is, the output unit 140 of the device 100 does not update the firmware stored in the memory unit 150 as a whole, but updates part of the memory unit 150 based on the update firmware transmitted from the cloud server 200. It may be configured to perform updating of data stored in sub-memory area 152, which is an area. Therefore, the device 100 can prevent power consumption due to frequent updates.

Here, the transceiver 110, the power controller 120, the encryption/decryption unit 130, and the output unit 140 in the device 100 may be realized by hardware modules, software modules, or a combination of hardware and software modules. .

In this case, device 100 may include communication module 10 . The communication module 10 may be an add-on device (that is, a detachable module) that is separately attached to the device 100 in the form of a dongle, or a module that is basically installed in the device 100 and manufactured. There may be. For example, in the case of an existing device, such as an existing fire alarm or gas leak alarm, which basically does not have SMS receiving/sending function, communication module 10 may be attached to provide SMS receiving/sending function.

Meanwhile, the device 100 may receive SMS from the cloud server 200 at time intervals determined by the adaptive idle mode setting information and output a voice or text notification message. At this time, the notification message may be output from a separate output device 20 such as a speaker or display connected to the device.

Here, the adaptive idle mode means that SMS is received at set time intervals between the device 100 and the cloud server 200, and the device 100 operates in idle mode within the set time interval. You may In this case, the set time interval may be controlled via the SMS message described above, for example, the set time interval may be determined by the possibility or probability of occurrence of an emergency situation. A more detailed description of the operation process of the device by applying the adaptive idle mode will be described later with reference to FIG.

The cloud server 200 receives a message (or an abnormal signal) notifying that an emergency situation has occurred from the outside or a control request from the user, and sends a notification message including notification of the emergency situation to the device 100 via the base station 300; or send a control message containing the operation of the device 100 or for adjusting the time interval for performing the operation of receiving SMS messages in the adaptive idle mode. The cloud server 200, for example, sends a control message containing the set value of the time interval.

For example, when the cloud server 200 receives a message indicating that an emergency situation has occurred from an external server (for example, a notification of a disaster situation from the Meteorological Agency or a notification of an earthquake occurrence situation in the vicinity), the cloud server 200 recognizes that an emergency situation has occurred. Alternatively, the device 100 to which the notification message should be sent may be identified based on pre-stored SIM information of the device 100 , and the encrypted notification message in the form of SMS may be sent to the device 100 . A more detailed description of the detailed configuration of the cloud server 200 will be given later with reference to FIG.

The base station 300 receives the call signal from the cloud server 200 and transmits it to the device 100 . Also, the base station 300 in the present invention may be called a BS (Base Station), a NodeB (NB), an eNodeB (eNB), an AP (access point), or the like.

FIG. 2 is a block diagram for cloud server 200 and device 100 according to an embodiment of the invention. FIG. 3 is an exemplary view of SMS packets according to a comparative example of the present invention and an embodiment of the present invention.

Referring to FIG. 2, the cloud server 200 may include a device selection module 210, a situation recognition module 220, an encryption/decryption execution module 230, a transmission/reception module 240, and a DB 250, which uses a separate external storage device. may Here, device selection module 210, situation awareness module 220, encryption/decryption execution module 230, transmission/reception module 240, and DB 250 may be understood as hardware, software, or a combination of hardware and software. Additionally, the cloud server 200 may further include a user interface 260 and receive control requests from the user via the user interface 260 .

The device selection module 210 selects a device to which a control message or notification message should be sent by recognizing the pre-stored unique identification number of each device 100, and sends information on the selected device to the situation recognition module 220. offer. Here, the unique identification number includes the serial number of the device, the identification number IMEI (International Mobile Equipment Identifier) of the communication module, and the mobile phone number MSISDN (Mobile Station International Subscriber Directory Number).

The situation recognition module 220 receives an emergency situation message from an external server or receives a control request message from a user, recognizes whether there is an emergency situation or a situation requiring control, and receives a notification message or a control message. is provided to encryption/decryption module 230 and transmission/reception module 240 .

The encryption/decryption module 230 performs encryption based on the notification or control messages received from the context awareness module 220 to send encrypted SMS messages to the device 100 and encrypts the notification or encryption messages. Create control messages. The encryption/decryption module 230 delivers the SMS message including the encrypted notification message or the encrypted control message to the transmission/reception module 240 .

Specifically, the encryption/decryption module 230 converts part or all of the numbers included in the device identification information, such as the serial number of the device 100 or the IMEI of the communication module of the device 100, into pre-stored arithmetic operations. The SMS message may be reconstructed by calculating the offset based on the formula and designating a position separated by the calculated offset as the starting point of the message payload (Payload), as shown in FIG. Specifically, as in the comparative example, the communication packet according to the embodiment includes a message header including at least one of the serial number of the device, the IMEI of the communication module or the IP address of the source, and the data actually transmitted. contains a payload that contains It can be seen that in the encrypted SMS message according to the embodiment of the present invention, the position of the starting point of the payload of the communication packet has moved backward due to the application of the offset. Thus, when the SMS of the present invention is applied with an offset based on at least one of the device serial number, communication module IMEI, and originating IP address, and delivered to an unauthenticated device, Security may be strengthened so that the content of SMS cannot be confirmed.

In addition, the encryption/decryption module 230 selects the forward direction and reverse direction of the text string included in the SMS message, which is included in the notification message or the control message in the direction corresponding to the numerical value of the specific position in the device identification information. An encrypted notification message or an encrypted control message in which character strings are arranged may be created. The encryption/decryption module 230 changes the reading direction of the payload according to the ID of the device 100 in the message header, for example, the serial number of the device and the number of the specific position (that is, order) of the IMEI of the communication module. good too. For example, if the specified value at a predetermined position (e.g., 4th) of the 15 digits of the IMEI is an odd number, then the direction of reading the entire payload packet, including the offset, is the forward direction. On the other hand, if the fourth specified value of IMEI is an even number, the direction of reading the entire payload packet including the offset may be reversed.

Furthermore, in the message header, identification information (ID) for identifying the device 100, for example, the IMEI or ICCID number and the value of the payload packet are added, the total value is displayed in hexadecimal, and the last two digits are the payload. may be included at a predetermined position (eg, at the end of the payload).

Thus, the reason for eliminating complex operations such as hashing and encrypting the SMS message with a simple offset, a value at a specific location of the ID of the device 100, is that hardware such as fire alarms or gas leak alarms / When the software resources are poor, the processing is difficult if the amount of calculation is large.

Therefore, unlike the comparative example, when transmitting/receiving the SMS having the packet structure according to the embodiment in which the starting point is changed by the offset, the reading direction according to the value of the specific position of the ID of the device 100 and the offset calculation method is recognized. Only the device that has the SMS will be able to see the content of the SMS, which can significantly enhance security.

Encryption/decryption module 230 is used for control messages used in situations where a control request is received from the user of device 100 via user interface 260 or in situations where adaptive idle mode settings must be changed. Control may be performed so that only the SMS of the control message to be sent is encrypted, and the notification message such as the disaster situation is not encrypted as plain text. This is to further reduce the resource/strategic burden of the cryptographic computation by ensuring that encryption is performed only in enhanced security situations such as control requests.

In this case, the encryption/decryption module 230 may include a flag indicating whether or not encryption has been performed in the message header, and read the flag so that the device can determine whether encryption has been performed. .

The encryption/decryption module 230 can change the time interval during which it performs the process of receiving SMS messages in adaptive idle mode. For example, when the cloud server 200 receives a message regarding the occurrence of a dangerous situation, such as a message from an external server indicating that an earthquake has occurred in the vicinity or a message from an external server indicating that a typhoon has reached a short distance, the adaptive idle mode is activated. By setting the set time interval to be shorter than the current time interval, it is possible to control so that the notification message for the disaster situation is received urgently without delay. Alternatively, when receiving a message from the external server regarding the cancellation of the dangerous situation, such as a message indicating that the typhoon has left the dangerous area, the set time interval of the adaptive idle mode is set longer than the current interval, and the set time interval is set longer. An idle mode in which the device 100 operates at regular intervals can be set to minimize power consumption.

Transceiver module 240 is configured to transmit a notification message or control message to device 100 via base station 300 .

The DB 250 may be various storage devices such as an extended memory in the cloud server 200, an external hard disk, a web cloud, etc., and may store various data necessary for driving the control system. For example, the device 100 unique identification number, type, possible control information, notification message, control message, adaptive idle mode setting change information, etc. may be stored.

Hereinafter, a usage example of controlling various devices 100 using SMS messages with improved security according to the present invention will be described with reference to FIGS. 5 to 7 .

Device 100 of FIG. 5 is, for example, an existing fire alarm or gas leak alarm. A gas leak alarm is a device having hardware/software resources for detecting gas leaks and outputting a simple alarm or the like. In this case, the communication module 10 may be attached to the device 100 . The communication module 10 may be a module capable of sending and receiving SMS messages according to the SMS standard. Alternatively, device 100 may incorporate communication module 10 .

In this case, the cloud server 200 transmits various notification messages to the device 100, which is a fire alarm or gas leak alarm, via the base station 300, and the device 100 that only functions as a fire alarm or gas leak alarm. can be used as a disaster detector. For example, when an earthquake occurs in the surrounding area, the device 100 changes part of the alarm message (processing b) stored in the main memory area 151 of the gas leak alarm to "an earthquake has occurred". It is saved in the sub-memory area 152 as an alarm message used in process b'.

When an earthquake situation occurs in the vicinity, the cloud server 200 shortens the set value of the time interval for performing the operation of receiving SMS messages in the adaptive idle mode via the base station 300 . For example, the unit is changed from 10 minutes to 10 seconds. Also, if an aftershock situation occurs for an earthquake, the cloud server 200 transmits an encrypted control message to the device 100 to perform the process b.

At this time, the device 100 executes the process b in response to receiving the transmitted control message. In this case, the output unit 140 checks whether there is a process b' corresponding to the process b in the sub-memory area 152, and if it determines that the process b' is saved, replaces the process b with the sub-memory area 152 using the message corresponding to process b'.

The device 100 in FIG. 6 may be a solar installation installed at home, and the cloud server 200 may be an operation server of a virtual power plant. For example, when a power peak occurs, the cloud server 200 may request that the above-described device 100 discharge in order to reduce the peak power value.

In this case, the cloud server 200 may send an encrypted SMS message to the solar power plant when power peaks occur, and control the storage battery of the solar power plant to discharge.

Alternatively, the cloud server 200 in FIG. 7 may be a shared service operation server utilizing IoT, and the device 100 may be various shared devices, such as a shared scooter provided for the shared service, a shared smart umbrella, or It may be a shared bicycle.

In this case, the device 100, which is a shared IoT device, sends various status information, such as information indicating whether the shared device is locked, location information of the shared device, etc., via an encrypted SMS. be able to. Or, for example, the cloud server 200 may send a control message to the device 100 to stop operation in a situation where the shared device has been stolen.

Embodiments of the shared IoT device can also significantly reduce power consumption, as some modules of the device 100 can be activated and deactivated by adaptive idle mode.

Hereinafter, the overall control operation according to the embodiment of the present invention will be described with reference to FIGS. 8 and 9. FIG.

FIG. 8 is a schematic diagram for explaining a control method using low power communication means according to an embodiment of the present invention. FIG. 9 is a flow chart for explaining the registration procedure of the device 100 of FIG.

First, referring to FIG. 8, the device 100 is registered by transmitting SIM information of the device 100 to the cloud server 200 (S810). More specifically, referring to FIG. 9, the device 100 transmits SIM information to the cloud server 200 for registration. In this case, the device selection module 210 of the cloud server 200 selects the unique identification number of the device 100 provided by the carrier (for example, the serial number of the device, the IMEI of the communication module) and the unique identification indicated by the SIM information of the device 100. numbers are compared and authenticated, and the authenticated device 100 is registered.

Subsequently, the sending/receiving module 240 of the cloud server 200 sends an SMS message to the registered device 100 to the effect that it has been authenticated.

After being registered, the situation awareness module 220 of the cloud server 200 determines whether a time interval adjustment is required. In this case, the situation awareness module 220 of the cloud server 200 receives either an emergency situation message from the external server or a control request message via the user interface 260 that an adjustment to the adaptive idle mode time interval is required. If received, it recognizes that the time interval needs to be adjusted (S820).

If the time interval needs to be adjusted, the encryption/decryption module 230 changes the adaptive idle mode time interval setting to adjust the adaptive idle mode cycle (time interval) (S830).

When there is a control message or notification message to be sent to the device 100 , the cloud server encrypts the control message or notification message based on the unique identification number of the device 100 . In this case, the device 100 may check for messages from the cloud server 200 and receive SMS messages from the server at each adaptive idle mode time interval. Alternatively, the cloud server 200 may send the SMS message to the device 100 every second time interval corresponding to the first time interval of the adaptive idle mode set on the device 100 (S840). The first time interval and the second time interval may be the same or different. Also, the setting of the second time interval may be omitted.

The device 100 and the cloud server 200 have time intervals for sending and receiving SMS messages together with or instead of the time intervals for sending and receiving SMS messages so that the device 100 can send SMS messages at the timing when the SMS messages can be received. may be set. In addition, the cloud server 200 may set the device 100 to receive the SMS message earlier than the first time interval so that the device 100 can receive the SMS message even if the device 100 and the cloud server 200 do not operate synchronously. SMS messages may be sent at short second time intervals.

Encrypted SMS messages sent to the device 100 in a push or pull manner are output as voice or text after decryption by the device 100, or output in the form of control signals to perform the necessary control. (S850).

As described above, the control system according to the present invention transmits the control signal to be transmitted in the form of encrypted SMS, and has few hardware/software resources or lacks communication coverage. A highly secure remote control can be provided for devices that must be installed at a location.

In addition, the control system according to the present invention utilizes the above-described SMS that has been processed to increase safety, and by applying an adaptive idle mode, low-power communication that enables efficient low-power operation of equipment. A control system using means can be provided.

The control method using the low-power communication means according to one embodiment of the present invention has been described above. Of course, a program stored in a computer-readable recording medium can also be implemented.

That is, the control method using the low-power communication means described above may be included in a computer-readable recording medium and provided by typically implementing a program of commands for realizing it. This will be readily understood by those skilled in the art. In other words, it may be implemented in the form of program instructions executed via various computer means and recorded on a computer-readable recording medium. The computer-readable medium may include program instructions, data files, data structures, etc. singly or in combination.

The program instructions recorded on the computer-readable recording medium may be specially designed and constructed for the present invention, and may be known and available to those skilled in the art of computer software. may

Examples of the computer-readable recording medium include magnetic media such as hard disks, floppy disks, and magnetic tapes; optical media such as CD-ROMs and DVDs; Magneto-optical media such as floptical disks, and ROMs, RAMs, flash memories, USB memories, etc., specially designed to store and execute program instructions. A configured hardware device is included. The computer readable recording medium can also be distributed over computer systems coupled through a network so that the computer readable code is stored and executed in a distributed fashion.

Examples of program instructions include not only machine language code, such as that generated by a compiler, but also high-level language code that can be executed by a computer using an interpreter or the like. The hardware device may be configured to act as one or more software modules, and vice versa, to perform the operations of the present invention.

Although the embodiments of the present invention have been described in more detail with reference to the accompanying drawings, the present invention is not necessarily limited to such embodiments, and can be modified within the scope of the technical idea of the present invention. , and can be modified in various ways. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but are for the purpose of explanation, and such embodiments limit the scope of the technical idea of the present invention. not to be As such, the above-described embodiments are to be considered in all respects as illustrative and not restrictive. The protection scope of the present invention should be analyzed according to the following claims, and all technical ideas within the equivalent scope should be construed as included in the scope of rights of the present invention.

100 device 200 cloud server 300 base station

Claims (9)

a cloud server and a device for receiving SMS messages from the cloud server;
The cloud server includes an encryption unit that creates an encrypted notification message and an encrypted control message by encrypting the notification message and the control message;
a transmission unit configured to transmit the SMS message including at least one of the encryption notification message and the encryption control message to the device;
has
The device is
a receiver that receives the SMS message from the cloud server;
a decoding unit that decodes the SMS message received by the receiving unit;
When the SMS message decoded by the decoding unit includes the notification message, the notification message is output to the outside, and when the SMS message decoded by the decoding unit includes the control message, based on the control message an output unit for executing the setting operation of the device by
has
The encryption unit calculates an offset value based on at least part of a number included in device identification information for identifying the device, and arranges the notification message or the control message at a position corresponding to the offset value. A device control system that creates the encrypted notification message or the encrypted control message . The encryption part is included in the notification message or the control message in a direction corresponding to a numerical value at a specific position in the device identification information, between a forward direction and a reverse direction of a character string included in the SMS message. creating the encrypted notification message or the encrypted control message in which the character string is arranged;
The device control system according to claim 1 . a cloud server and a device for receiving SMS messages from the cloud server;
The cloud server includes an encryption unit that creates an encrypted notification message and an encrypted control message by encrypting the notification message and the control message;
a transmission unit configured to transmit the SMS message including at least one of the encryption notification message and the encryption control message to the device;
has
The device is
a receiver that receives the SMS message from the cloud server;
a decoding unit that decodes the SMS message received by the receiving unit;
When the SMS message decoded by the decoding unit includes the notification message, the notification message is output to the outside, and when the SMS message decoded by the decoding unit includes the control message, based on the control message an output unit for executing the setting operation of the device by
has
When receiving an emergency message notifying that there is an emergency situation from an external server, the transmitting unit transmits the encrypted notification message corresponding to the emergency message at a second time interval corresponding to a preset first time interval. or sending said SMS message containing said encrypted control message;
the receiving unit performs an operation of receiving the SMS message every the first time interval;
device control system. The transmitting unit transmits to the device the encrypted control message including a set value of a time interval for the device to execute processing for receiving the SMS message,
The output unit changes the time interval at which the receiving unit performs the operation of receiving the SMS message based on the set value of the time interval included in the encrypted control message received by the receiving unit.
The device control system according to claim 3 . a cloud server and a device for receiving SMS messages from the cloud server;
The cloud server includes an encryption unit that creates an encrypted notification message and an encrypted control message by encrypting the notification message and the control message;
a transmission unit configured to transmit the SMS message including at least one of the encryption notification message and the encryption control message to the device;
has
The device is
a receiver that receives the SMS message from the cloud server;
a decoding unit that decodes the SMS message received by the receiving unit;
When the SMS message decoded by the decoding unit includes the notification message, the notification message is output to the outside, and when the SMS message decoded by the decoding unit includes the control message, based on the control message an output unit for executing the setting operation of the device by
a memory unit including a main memory area and a sub-memory area ;
has
When the second data of the process corresponding to the first data related to the specific process stored in the main memory area is stored in the sub-memory area, the output unit outputs the second data stored in the sub-memory area. perform processing based on the second data;
device control system. If the second data is stored in the sub-memory area at the time when the receiving unit receives the update firmware from the cloud server, the output unit outputs the first data stored in the main memory area. updating the second data stored in the sub-memory area without updating the data;
The device control system according to claim 5 . the cloud server creating an encrypted notification message and an encrypted control message by encrypting the notification message and the control message;
sending an SMS message including at least one of the encryption notification message and the encryption control message from the cloud server to the device;
When the decoded SMS message includes the notification message, the device outputs the notification message to the outside, and when the decoded SMS message includes the control message, the device outputs the notification message. performing a configuration operation of said device based on a control message;
has
In the step of creating the encrypted notification message and the encrypted control message, an offset value is calculated based on at least a part of the numbers included in the device identification information for identifying the device, and at a position corresponding to the offset value A device control method for creating the encrypted notification message or the encrypted control message in which the notification message or the control message is arranged . the cloud server creating an encrypted notification message and an encrypted control message by encrypting the notification message and the control message;
When an emergency message is received from an external server indicating that there is an emergency situation, the encryption corresponding to the emergency message is sent from the cloud server to the device every second time interval corresponding to the first preset time interval. sending a notification message or an SMS message containing said encrypted control message ;
said device performing an operation of receiving said SMS message every said first time interval;
When the notification message is included in the SMS message after decoding the received SMS message, the device outputs the notification message to the outside, and the control message is included in the SMS message after decoding. if the device performs a configuration operation of the device based on the control message;
A device control method comprising: the cloud server creating an encrypted notification message and an encrypted control message by encrypting the notification message and the control message;
sending an SMS message including at least one of the encryption notification message and the encryption control message from the cloud server to a device having a main memory area and a sub-memory area ;
When the decoded SMS message includes the notification message, the device outputs the notification message to the outside, and when the decoded SMS message includes the control message, the device outputs the notification message. performing a configuration operation of said device based on a control message;
has
In the step of executing the setting operation of the device, if the second data of the process corresponding to the first data related to the specific process stored in the main memory area of the device is stored in the sub-memory area , executing a process based on the second data stored in the sub-memory area;
Device control method.

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