A low power consumption processing method in power-off wake-up mode of electric energy meter

Abstract

The present application relates to the technical field of electric energy meters, and in particular to a low-power consumption processing method in a power-off wake-up mode of an electric energy meter, and the technical solution is: applied to an electric energy meter with a communication function, wherein a control module and an execution module are arranged in the electric energy meter, wherein the control module comprises a control chip, a detection module and a judgment module, wherein the detection module is used to detect in real time whether the electric energy meter is in a sleep mode, wherein the judgment module comprises a first judgment module and a second judgment module, wherein the first judgment module analyzes and processes a signal transmitted by the detection module; wherein the execution module is used to receive a transmission signal from the control module, wherein the execution module comprises an initialization module; wherein the second judgment module is used to receive a signal transmitted by the execution module and judge whether the electric energy meter is powered on; the present application reduces the power consumption of the electric energy meter, prolongs the service life of the battery, reduces the replacement frequency of the battery or the electric energy meter, and increases the actual economic benefits.

Description

Technical Field

[0001] The present invention relates to the technical field of electric energy meters, and in particular to a low power consumption processing method in a power-off wake-up mode of an electric energy meter. Background Art

[0002] An electric energy meter is an instrument used to measure electric energy. It is also called an electric meter, a fire meter, or a kilowatt-hour meter. It refers to an instrument that measures various electrical quantities. Currently, all smart electric energy meters on the market are equipped with batteries and LCD displays. When the power is off, the meter will enter sleep mode and the LCD screen will not display. When a key is pressed, the LCD can display information such as the amount of electricity, so that meter readers can also view the meter's electricity, event records, and other data during power outages.

[0003] At present, there are generally two ways of power-off display. One is automatic cycle display after power-off button wake-up, and the other is button display after power-off button wake-up. There is more information that can be displayed under power-off, and the screen can be turned over by pressing buttons. The information required to be displayed can be set by communication when the meter is powered on (that is, the information required to be displayed can be preset by parameters). When no button is pressed, it will automatically return to sleep mode after 30 seconds or 60 seconds to save battery power.

[0004] The life of the energy meter is 10-15 years. It currently comes with 1-2 batteries. The batteries of some models of energy meters cannot be replaced. To reduce battery consumption, in power-off mode, reduce power consumption as much as possible to extend the battery life.

[0005] refer to Figure 1 At present, the common practice is to use super capacitor or battery to power the module in the case of power failure, and continuously refresh the LCD display and detect buttons (including other functions such as power-on detection) in the process of key wake-up module. This process is generally a while or for loop, and it will jump out of the loop and enter sleep mode after no button is pressed for a period of time.

[0006] The power consumption of the electric meter in the key wake-up module is at the milliampere level. Different hardware solutions will have slight differences. The power consumption of the electric meter in sleep mode is generally 20-30uA, which is relatively small, that is, the power consumption in wake-up mode is 50-100 times that in sleep mode. In the key wake-up module, the power consumption of the electric meter mainly consists of two parts: LCD display consumption and MCU processor high-speed operation power consumption. Therefore, in response to the problems existing in the prior art, this application discloses a low-power processing method for the electric energy meter in the power-off wake-up mode. Summary of the invention

[0007] In order to solve the above technical problems, the present invention provides a low power consumption processing method in a power-off wake-up mode of an electric energy meter.

[0008] The technical solution adopted by the present invention to solve the technical problem is: a low-power consumption processing method in a power-off wake-up mode of an electric energy meter, which is applied to an electric energy meter with a communication function, wherein a control module and an execution module are provided in the electric energy meter, wherein the control module includes a control chip, a detection module and a judgment module, wherein the detection module is used to detect in real time whether the electric energy meter is in a sleep mode and transmit the detection result to the judgment module;

[0009] The judgment module includes a first judgment module and a second judgment module. The first judgment module analyzes and processes the signal transmitted by the detection module to determine whether the meter has pressed a key or the previous key wake-up time has not ended, and transmits the detection result to the control chip. The control chip sends an instruction to the execution module according to the judgment signal;

[0010] The execution module is used to receive the transmission signal of the control module and transmit it to the second judgment module;

[0011] The second determination module is used to receive the signal transmitted by the execution module and determine whether the electric meter is powered on.

[0012] Preferably, a circulation module is also provided in the electric energy meter, and the circulation module includes a first circulation block and a second circulation block. The first circulation block is arranged corresponding to the first judgment module, and the first circulation block is used to receive a no-key signal sent by the first judgment module, and execute a trigger signal to close the LCD screen once, and finally circulate the connection detection module to make the control module enter a circulation operation.

[0013] Preferably, the second loop block is used to receive a signal from the second judgment module that the electric meter is not powered on, and execute instructions to shut down other modules except the liquid crystal module, and connect the detection module to enter the loop.

[0014] Preferably, the execution module includes an initialization module, which receives the judgment signal of the first judgment module, and when a key is pressed on the electric meter and the key wake-up time has not expired, the initialization module initializes the modules required for key wake-up once.

[0015] Preferably, the execution module further comprises a key wake-up module, the key wake-up module is used to connect to the initialization module, the key wake-up module is configured as a liquid crystal display, and transmits a signal of the liquid crystal display to the second judgment module.

[0016] Preferably, the execution module further includes a power-on module, which is used to connect to the second judgment module and power on the electric meter after receiving a signal for powering on the electric meter.

[0017] Beneficial effects of the present invention:

[0018] 1. The electric meter of the present application will remain in sleep mode most of the time under the button wake-up module, and will only wake up once every 1 second to process the display. The time is extremely short, which effectively reduces the power consumption of the MCU processing high-speed work of the electric meter under the power-off button wake-up module.

[0019] 2. By reducing the power consumption of the meter, the battery life can be effectively extended, the replacement frequency of the battery or meter can be reduced, and the actual economic benefits can be increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A flowchart of the prior art for the background technology of this application;

[0021] Figure 2 This is a schematic diagram of the framework structure of an embodiment of the present application;

[0022] Figure 3 This is a flowchart of an embodiment of the present application.

[0023] Among them, 1. detection module; 2. first judgment module; 3. second judgment module; 41. initialization module; 42. key wake-up module; 43. power-on module; 51. first loop block; 52. second loop block. DETAILED DESCRIPTION

[0024] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments. The embodiments are only used to explain the present invention and do not limit the protection scope of the present invention.

[0025] Example:

[0026] refer to Figure 1 and Figure 2 A low-power processing method in a power-off wake-up mode of an electric energy meter is applied to an electric energy meter with a communication function. A control module and an execution module are arranged in the electric energy meter. The control module includes a control chip, a detection module 1 and a judgment module. The detection module 1 is used to detect and process the circuit working state of the electric energy meter, and the detection result is transmitted to the judgment module for analysis. The judgment module transmits the analysis result to the control chip, and the control chip is used to process the circuit working state.

[0027] refer to Figure 2 and Figure 3 The judgment module includes a first judgment module 2 and a second judgment module 3. The first judgment module 2 analyzes and processes the signal transmitted by the detection module 1, determines whether the meter has a key or the previous key wake-up time has not ended, and transmits the detection result to the control chip. The control chip sends instructions to the execution module according to the judgment signal. The detection module 1 is provided with a timing detection module, which wakes up once every 1 second to process the display.

[0028] After determining that the meter has a key or the previous key wake-up time has not ended, the execution module will receive the command signal of the control module. The execution module includes an initialization module 41 and a key wake-up module 42. The initialization module 41 receives the judgment signal of the first judgment module 2. When the meter has a key and the key wake-up time has not ended, the initialization module 41 initializes the modules required for key wake-up once. The key wake-up module 42 is used to connect the initialization module 41. The key wake-up module 42 is set to a liquid crystal display and transmits the signal of the liquid crystal display to the second judgment module 3.

[0029] The second judgment module 3 judges whether the electric meter needs to be powered on. The execution module further includes a power-on module 43. The power-on module 43 is used to connect to the second judgment module 3 and power on the electric meter after receiving a power-on signal of the electric meter.

[0030] refer to Figure 2 and Figure 3 The electric energy meter is also provided with a circulation module, which includes a first circulation block 51 and a second circulation block 52. The first circulation block 51 is set corresponding to the first judgment module 2. The first circulation block 51 is used to receive the no-key signal sent by the first judgment module 2, and execute the trigger signal to turn off the LCD screen once, and finally circulate and connect the detection module 1, so that the control module enters the circulation work. The second circulation block 52 is used to receive the signal from the second judgment module 3 that the electric meter is not powered on, and execute the instruction to turn off other modules except the LCD module, and connect the detection module 1 to enter the circulation.

[0031] The meter will be in sleep mode most of the time under the button wake-up module. It will wake up once every 1 second to process the display. The time is very short, which effectively reduces the power consumption of the MCU processing high-speed work under the power-off button wake-up module. If there are higher requirements for power consumption, the time of scheduled wake-up can be appropriately increased, such as adjusting 1 second to 3 seconds or 5 seconds.

[0032] The low power consumption processing method in the power-off wake-up mode of the electric energy meter disclosed in the present application has the following working principle:

[0033] 1. In sleep mode, the meter detects every second whether there is a new key wake-up or the previous key wake-up has not ended. If so, it enters the key wake-up module;

[0034] 2. In the key wake-up module, update the content to be displayed on the LCD, refresh the LCD driver, and detect the external power-on status. After all work is completed, keep the LCD module, turn off other modules, and directly enter the sleep mode;

[0035] 3. When the meter is in sleep mode, if no new key is detected or the previous key time has expired, the LCD will be turned off once and the meter will enter sleep mode again.

[0036] The above embodiments should not limit the present invention in any way, and any technical solutions obtained by equivalent replacement or equivalent conversion shall fall within the protection scope of the present invention.

Claims

1. A low power consumption processing method in a power-off wake-up mode of an electric energy meter, characterized in that: Applicable to an electric energy meter with a communication function, the electric energy meter is provided with a control module and an execution module, the control module comprises a control chip, a detection module (1) and a judgment module, the detection module (1) is used to detect in real time whether the electric energy meter is in a sleep mode, and transmit the detection result to the judgment module; The judgment module comprises a first judgment module (2) and a second judgment module (3), wherein the first judgment module (2) analyzes and processes the signal transmitted by the detection module (1), determines whether the meter has pressed a key or the previous key wake-up time has not ended, and transmits the detection result to the control chip, and the control chip sends an instruction to the execution module according to the judgment signal; The execution module is used to receive the transmission signal of the control module and transmit it to the second judgment module (3); The second judgment module (3) is used to receive the signal transmitted by the execution module and judge whether the electric meter is powered on; The execution module includes an initialization module (41), a key wake-up module (42), and a power-on module (43); The initialization module (41) receives a judgment signal from the first judgment module (2), and when a key is pressed on the electric meter and the key wake-up time has not expired, the initialization module (41) performs initialization of the modules required for key wake-up once; The key-press awakening module (42) is used to connect to the initialization module (41), the key-press awakening module (42) is configured as a liquid crystal display, and transmits a signal of the liquid crystal display to the second judgment module (3); The power-on module (43) is used to connect to the second judgment module (3) and to power on the electric meter after receiving a signal for powering on the electric meter; The electric energy meter is also provided with a circulation module, the circulation module comprising a first circulation block (51) and a second circulation block (52), the first circulation block (51) being arranged corresponding to the first judgment module (2), the first circulation block (51) being used to receive a no-key signal sent by the first judgment module (2), and to execute a trigger signal to close the LCD screen once, and finally to circulate and connect the detection module (1), so that the control module enters a circulation operation; The second loop block (52) is used to receive a signal from the second judgment module (3) indicating that the electric meter is not powered on, and execute an instruction to shut down other modules except the liquid crystal module, and connect to the detection module (1) to enter a loop.

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