TWI785905B - System and method for recovering information when instantaneous power failure - Google Patents

Abstract

A system and a method for recovering information when instantaneous power failure is provided. The method includes: in response to receiving a first water level height information corresponding to a first water level height from a field-side-terminal-electronic-device, storing the first water level height information by a computer-room-terminal-electronic-device, wherein the field-side-terminal-electronic-device stores an initial water level pressure value; in response to occurring instantaneous power failure and losing the initial water level pressure value, the field-side-terminal-electronic-device transmits an instantaneous power failure indication to the computer-room-terminal-electronic-device; in response to receiving the instantaneous power failure indication from the field-side-terminal-electronic-device, the computer-room-terminal-electronic-device transmits the first water level height information to the field-side-terminal-electronic-device; and in response to receiving the first water level height information from the computer-room-terminal-electronic-device, the field-side-terminal-electronic-device utilizes the first water level height information to obtain the initial water level pressure value.

Description

System and method for information recovery during momentary power failure

The present invention relates to an information recovery system and method in case of momentary power failure.

When the field-side electronic device has a momentary power failure, that is, the communication between the field-side electronic device and the computer room-side electronic device (which supplies power to the field-side electronic device) is cut off and restored instantly, it will cause the field-side The data of the electronic device is lost (reset to zero). In this case, if the data transmitted from the electronic device at the field end to the electronic device at the computer room end is continuous, serious errors will be caused. Therefore, there is a need for an improved information recovery system and method during momentary power failure.

The present invention provides a system and method for recovering information during a momentary power failure, which can restore the lost information (due to the momentary power failure) of the field-end electronic device that has a momentary power failure, so as to ensure the normal operation of the field-side electronic device.

The information recovery system in case of momentary power failure of the present invention includes an electronic device at the machine room end and an electronic device at the field end. The field-side electronic device is coupled to the machine room-side electronic device, and includes a pressure sensor, and stores an initial water level pressure value, wherein in response to receiving first water level height information corresponding to the first water level height from the field-side electronic device , the computer room-side electronic device stores the first water level height information; in response to a momentary power failure and loses the initial water level pressure value, the field-side electronic device sends a momentary power-off instruction to the computer room-side electronic device; in response to the field-side electronic device Receiving the instantaneous power failure instruction, the computer room-side electronic device sends the first water level information to the field-side electronic device; in response to receiving the first water-level height information from the computer room-side electronic device, the field-side electronic device uses the first water level height information to obtain initial water level pressure.

The method for recovering information during momentary power failure of the present invention includes: in response to receiving the first water level height information corresponding to the first water level height from the field end electronic device, storing the first water level height information by the computer room end electronic device, wherein the field end The terminal electronic device stores the initial water level pressure value; in response to the momentary power failure and loses the initial water level pressure value, the field-side electronic device sends an instantaneous power-off indication to the computer room-side electronic device; in response to receiving from the field-side electronic device Instantaneous power failure indication, the computer room-side electronic device sends the first water level height information to the field-side electronic device; and in response to receiving the first water level height information from the computer room-side electronic device, the field-side electronic device utilizes the first water level height information Get the initial water level pressure value.

Based on the above, the information recovery system and method for momentary power failure of the present invention can send a momentary power failure indication to the computer room side electronic device from the field side electronic device when a momentary power failure occurs in the field side electronic device, and the computer room side electronic device The device transmits (previously received from the field-side electronic device) water level information to the field-side electronic device, so that the field-side electronic device obtains (recovers) the data lost due to momentary power failure. Based on this, the field-side electronic device can operate normally even if a momentary power failure occurs.

In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail together with the accompanying drawings.

FIG. 1 is a schematic diagram of an information recovery system 100 in case of momentary power failure according to an embodiment of the present invention. The system 100 may include a computer room-side electronic device 110 and a field-side electronic device 120 .

The computer room-side electronic device 110 and/or the field-side electronic device 120 are, for example, electronic devices with computing capabilities. The computer room-side electronic device 110 and/or field-side electronic device 120 may have input and output elements (such as but not limited to: display, touch screen, keyboard or mouse), processing unit (such as: processor but not limited to this), Communication units (such as: various communication chips, mobile communication chips, Bluetooth chips or WiFi chips, etc. but not limited to this) and storage units (such as: removable random access memory, flash memory or hard disk, etc. but not limited to this) and other necessary components for running the computer room-side electronic device 110 and/or the field-side electronic device 120 .

The field end electronic device 120 includes a pressure sensor 121 .

In this embodiment, the field-side electronic device 120 can be coupled to the computer room-side electronic device 110 . For example, the field-side electronic device 120 can be coupled to the machine room-side electronic device 110 by using a copper cable. Furthermore, the computer room-side electronic device 110 and the field-side electronic device 120 may have the same impedance (for example, 600 ohms), and based on this, the computer-room-side electronic device 110 may use copper cables to supply power to the field side using an uninterruptible power supply system. electronic device 120 .

In one embodiment, the computer room-side electronic device 110 and the field-side electronic device 120 can support Dual-Tone Multi-Frequency (DTMF) signals. In other words, the computer room-side electronic device 110 and the field-side electronic device 120 may include DTMF signal encoding/decoding components.

In this embodiment, the field-side electronic device 120 can store the initial water level pressure value P ₀ . The initial water level pressure value P ₀ may be the pressure value measured by the pressure sensor 121 at the time point when the flooding begins.

FIG. 2 is an instruction diagram for restoring the initial water level pressure value according to an embodiment of the present invention.

In step S201, in response to the first pressure value P ₁ being sensed by the pressure sensor 121 at a first time point (later than the aforementioned flooding start time point), the field-end electronic device 120 can use the first pressure The value P ₁ and the initial water level pressure value P ₀ yield a first water level L ₁ .

… (公式1) 其中P _i為壓力感測器121在特定時間點（i不等於0）感測到的壓力值，P ₀為起始水位壓力值，L _i為在特定時間點i（i不等於0）的水位高度（單位為公分）。 For example, the field-end electronic device 120 may substitute the first pressure value P ₁ and the initial water level pressure value P ₀ into the following formula 1 to obtain the first water level height L ₁ .

... (Formula 1) where P _i is the pressure value sensed by the pressure sensor 121 at a specific time point (i is not equal to 0), P ₀ is the initial water level pressure value, and L _i is the pressure value at a specific time point i (i is not equal to 0) the height of the water level (in centimeters).

For convenience of description, it is assumed that the first water level height L ₁ is 30.5 cm.

In step S202 , the field-side electronic device 120 may transmit first water level information corresponding to the first water level L ₁ to the computer room-side electronic device 110 .

As described in the foregoing embodiments, since the computer room-side electronic device 110 and the field-side electronic device 120 can support DTMF signals, the first water level information can be DTMF signals. For example, the first water level height information may be a DTMF signal #30*5ck# (corresponding to 30.5 cm).

Specifically, the water level information in this embodiment uses "#" to represent the beginning and end of the water level information, and uses "*" to represent the decimal point in the water level, and uses a mutually exclusive OR gate at the seventh position (Exclusive OR) as a checksum (Checksum).

In step S203, in response to receiving the first water level information (DTMF signal #30*5ck#) corresponding to the first water level L ₁ from the field side electronic device 120, the computer room side electronic device 110 can store the first 1. Water height information.

In step S204 , in response to loss of the initial water level pressure value P ₀ due to a momentary power failure, the field-end electronic device 120 may send a momentary power failure indication to the machine room-side electronic device 110 .

In this embodiment, the momentary power failure indication may be, for example, a DTMF signal #3219ck#.

It should be noted that the momentary power failure indication in this embodiment needs to be set to be different from (all possible) water level information so as to be identified by the electronic device 110 at the computer room end. For example, the highest water level in this embodiment can be 260 cm, so the momentary power failure indication can be set as DTMF signal #3219ck#, which is different from (all possible) water level information to avoid The electronic device 110 misjudged.

In step S205, in response to receiving a momentary power failure instruction from the field-side electronic device 120, the computer room-side electronic device 110 may send the first water level information (dual tone multi-frequency signal #30*5ck#) to the field-side electronic device 120.

Then, in response to receiving the first water level information (dual tone multi-frequency signal #30*5ck#) from the computer room-side electronic device 110, the field-side electronic device 120 can use the first water level information to obtain (restore) the initial water level pressure value P ₀ .

Specifically, in step S206, in response to receiving the first water level information (DTMF signal #30*5ck#) from the computer room-side electronic device 110, the field-side electronic device 120 can use the The first water level height L ₁ (30.5 cm) of the information, and the field-end electronic device 120 sensed by the pressure sensor 121 at the current time point (later than the aforementioned flooding start time point and the aforementioned first time point) The current pressure value P _current obtains (restores) the initial water level pressure value P ₀ , and can store the initial water level pressure value P ₀ .

In detail, the field-end electronic device 120 can substitute the first water level height L ₁ (30.5 cm) and the current pressure value P _current sensed at the current time point into formula 1 to obtain (restore) the initial water level pressure value P ₀ .

In other words, after step S206 is executed, the field-end electronic device 120 can successfully restore the initial water level pressure value P ₀ (lost due to momentary power failure).

In step S207, in response to the second pressure value P ₂ sensed by the pressure sensor 121 at a second time point (later than the aforementioned flooding start time point, first time point, and current time point), the field domain The terminal electronic device 120 can use the second pressure value P ₂ and the initial water level pressure value P ₀ to calculate the second water level height L ₂ at the second time point.

In detail, the field-side electronic device 120 may substitute the second pressure value P ₂ and the (recovered) initial water level pressure value P ₀ into Formula 1 to obtain the second water level height L ₂ .

In step S208 , the field-side electronic device 120 may transmit the second water level information corresponding to the second water level L ₂ to the machine room-side electronic device 110 .

It is worth mentioning that the second water level can also be a DTMF signal (that is, both the second water level and the first water level are DTMF signals). Assuming that the second water level L ₂ is 32.5 cm, the second water level information may be (corresponding to 32.5 cm) DTMF signal #32*5ck#.

In step S209, in response to receiving the second water level information (DTMF signal #32*5ck#), the computer room electronic device 110 can store the second water level information.

In one embodiment, the electronic device 110 at the computer room end can be communicatively connected to an Internet of Things (IOT) management platform (not shown in the figure). For example, the computer room-side electronic device 110 can use an asymmetric digital subscriber line (Asymmetric Digital Subscriber Line, ADSL) communication to connect to the Internet of Things management platform, and the computer room-side electronic device 110 can use the dual-tone multi-frequency signal encoding/decoding element to convert the aforementioned first A water level height information (DTMF signal #30*5ck# in step S203) and a second water level height information (DTMF signal #32*5ck# in step S209) are converted into digital codes, and passed through asymmetric digital The user line is transmitted to the Internet of Things management platform for management by managers using the Internet of Things management platform.

FIG. 3 is a flowchart of a method for recovering information during a momentary power failure according to an embodiment of the present invention, wherein the method can be implemented by the system 100 .

In step S301, in response to receiving the first water level information corresponding to the first water level from the electronic device at the field end, the electronic device at the computer room end stores the first water level information, wherein the electronic device at the field end stores the initial water level pressure value. In step S302, in response to loss of the initial water level pressure value due to momentary power failure, the electronic device at the field end sends a momentary power failure instruction to the electronic device at the computer room end. In step S303, in response to receiving the momentary power failure instruction from the field-side electronic device, the computer room-side electronic device sends the first water level information to the field-side electronic device. In step S304, in response to receiving the first water level information from the computer room-side electronic device, the field-side electronic device uses the first water level height information to obtain an initial water level pressure value.

To sum up, the information recovery system and method for momentary power failure of the present invention can send a momentary power failure indication from the field-side electronic device to the computer room-side electronic device when a momentary power-off occurs to the field-side electronic device, and the computer room The terminal electronic device transmits (previously received from the field-side electronic device) water level information to the field-side electronic device, so that the field-side electronic device obtains (recovers) the data lost due to momentary power failure. Based on this, the field-side electronic device can operate normally even if a momentary power failure occurs.

Although the present invention has been disclosed above with the embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the technical field may make some changes and modifications without departing from the spirit and scope of the present invention. The scope of protection of the present invention should be defined by the scope of the appended patent application.

100: Information recovery system in case of momentary power failure 110: Computer room end electronic device 120: field end electronic device 121: Pressure sensor S201~S209, S301~S304: steps

FIG. 1 is a schematic diagram of an information recovery system during a momentary power failure according to an embodiment of the present invention. FIG. 2 is an instruction diagram for restoring the initial water level pressure value according to an embodiment of the present invention. FIG. 3 is a flow chart of a method for recovering information during a momentary power failure according to an embodiment of the present invention.

S301~S304: steps

Claims (8)

An information recovery system in the event of a momentary power failure, comprising: an electronic device at the computer room end; and an electronic device at the field end, coupled to the electronic device at the computer room end, and including a pressure sensor, and storing the initial water level pressure value, wherein In response to sensing a first pressure value at a first time point by the pressure sensor, the field-side electronic device obtains a first water level using the first pressure value and the initial water level pressure value, and sending the first water level information corresponding to the first water level to the computer room-side electronic device; in response to receiving the first water level corresponding to the first water level from the field-side electronic device Information, the computer room terminal electronic device stores the information of the first water level height; in response to the loss of the initial water level pressure value in response to an instantaneous power failure, the field terminal electronic device sends an instantaneous power failure instruction to the computer room terminal An electronic device; in response to receiving the instantaneous power failure indication from the field-side electronic device, the computer room-side electronic device sends the first water level information to the field-side electronic device; The terminal electronic device receives the first water level information, and the field terminal electronic device obtains the initial water level pressure value by using the first water level information. The system of claim 1, wherein In response to receiving the first water level information from the computer room-side electronic device, the field-side electronic device uses the first water level corresponding to the first water level information and the field-side electronic device The initial water level pressure value is obtained from the current pressure value sensed by the pressure sensor at the current time point, and the initial water level pressure value is stored. The system according to claim 1, wherein in response to sensing a second pressure value by the pressure sensor at a second time point, the field end electronic device utilizes the second pressure value and the trigger Calculate the initial water level pressure value at the second water level height at the second time point, and transmit the second water level height information corresponding to the second water level height to the computer room end electronic device; in response to receiving the second water level height information, the electronic device at the computer room end stores the height information of the second water level. The system as claimed in claim 1, wherein the first water level information is a dual-tone multi-frequency signal. A method for recovering information during momentary power failure, comprising: in response to sensing a first pressure value at a first time point, the field-end electronic device uses the first pressure value and the initial water level pressure value to obtain a first water level height, and transmit the first water level height information corresponding to the first water level height to the computer room-side electronic device, wherein the field-side electronic device stores the initial water level pressure value; The device receives the first water level height information corresponding to the first water level height, and the computer room end electronic device stores the first water level height information; In response to the loss of the initial water level pressure value due to a momentary power failure, the field-side electronic device transmits a momentary power-off indication to the computer room-side electronic device; in response to receiving the field-side electronic device from the Momentary power failure indication, the computer room-side electronic device sends the first water level information to the field-side electronic device; and in response to receiving the first water level information from the computer room-side electronic device, the The field-end electronic device obtains the initial water level pressure value by using the first water level height information. The method according to claim 5, wherein in response to receiving the first water level information from the computer room-side electronic device, the field-side electronic device uses the first water level information to obtain the initial water level The step of the pressure value includes: in response to receiving the first water level information from the computer room-side electronic device, using the first water level corresponding to the first water level information by the field-side electronic device and The current pressure value sensed by the field-end electronic device at the current time point obtains the initial water level pressure value, and stores the initial water level pressure value. The method according to claim 5, further comprising: in response to sensing a second pressure value at a second time point, using the second pressure value and the initial water level pressure value by the field end electronic device calculating a second water level at the second time point, and sending second water level information corresponding to the second water level to the electronic device at the computer room; in response to receiving the second water level information, by The computer room terminal electronic device storing the second water level height information. The method according to claim 5, wherein the first water level information is a dual-tone multi-frequency signal.

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