KR102353853B1 - Sensor board with battery life management - Google Patents

Abstract

The renewable energy sensor board includes a battery that supplies power to at least one load device having a constant power consumption in a discharging mode, a current measurement unit that measures the current between the battery and the load device, and a voltage measurement that measures the voltage of the battery Receives the data measured by the wattage, the wattage measuring unit that measures the power consumption of the battery, the current measuring unit, the voltage measuring unit, and the wattage measuring unit in real time, and monitors and stores the measured data based on time, and a battery monitoring unit that controls to display data on a display device.

Description

Renewable energy sensor board including battery life management function {Sensor board with battery life management}

The present invention relates to a sensor board, and more particularly, to a new and renewable energy sensor board including a battery life management function.

Photovoltaic power generation is a power generation method that converts sunlight into direct current electricity to produce electricity. A solar panel to which several solar cells are attached is spread out on a large scale to produce electricity using solar energy.

As the demand for renewable energy increases, the production of solar cells and solar cell arrays is also increasing significantly, and currently, solar power generation systems are being built in a grid-connected manner.

Such solar power generation is spotlighted as an alternative energy source in the future because it can be used semi-permanently, maintenance is simple using a solar cell, and uses a pollution-free solar energy source. However, in order to produce large-capacity photovoltaic electricity, a large number of photovoltaic panels must be installed in a large area. Without detailed monitoring of these multiple photovoltaic panels, whether photovoltaic power generation is operating with appropriate performance or problems arise Therefore, it is not possible to determine whether the efficiency of solar power generation is declining.

Therefore, in order to ensure the efficient operation of an effective photovoltaic power generation system, the need for efficient monitoring of photovoltaic power generation facilities is emerging.

The sensor board of the remote measurement photovoltaic power generation test system is defined as a sensor board that can measure the amount of sunlight, air volume, temperature, and humidity respectively. development is required.

On the other hand, a battery made of a lithium battery or a lead acid battery has the advantage of maintaining a stable voltage output, but the battery life is rapidly shortened during overcharge/overdischarge. In particular, if the over-discharge state continues, it is fatal to the battery life.

KR10-2018-0112917A

The present invention has been proposed to solve the above technical problems, and provides a new and renewable energy sensor board capable of measuring a temperature value as well as including a battery life management function.

According to an embodiment of the present invention for solving the above problems, a battery for supplying power to at least one load device having a constant power consumption in a discharging mode, and a current measuring unit for measuring a current between the battery and the load device; , the voltage measurement unit for measuring the voltage of the battery, the wattage measurement unit for measuring the power consumption of the battery, the current measurement unit, the voltage measurement unit, and the wattage measurement unit are provided in real time, There is provided a renewable energy sensor board including a battery monitoring unit that monitors and stores data, and controls to display the measured data on a display device.

In addition, the battery monitoring unit included in the present invention controls to output a warning from a point in time when the amount of power consumption for one day exceeds a preset first reference amount of power consumption, and a second reference amount of power consumption greater than the first reference amount of power consumption It is characterized in that the control is performed to cut off the battery discharge from the time point exceeding , or control to provide an additional amount of power in consideration of the amount of reserve power.

In addition, when the battery monitoring unit included in the present invention grasps the reference performance data of the newly installed battery up to a predetermined reference period, the change in battery voltage according to the amount of power consumption (Wh) under a constant discharge condition generated by the load device The value (ΔV) is identified by time and stored as the reference performance data. Even after the reference period, the change value (ΔV) of the battery voltage according to the amount of power consumption (Wh) is identified by time and compared with the reference performance data, and the difference in the rate of change It is characterized in that the degree of deterioration of the battery is determined based on the

In addition, when the battery monitoring unit included in the present invention grasps the reference performance data of the newly installed battery up to a predetermined reference period, the change in battery voltage according to the amount of power consumption (Wh) under a constant discharge condition generated by the load device The value (ΔV) is identified by time, the change value of battery voltage (ΔV) compared to the amount of power consumption (Wh), and the power use time compared to the change value (ΔV) of the battery voltage are calculated and stored as reference performance data, but the reference period After that, the battery voltage change value (ΔV) compared to the power consumption (Wh) and the power usage time compared to the battery voltage change value (ΔV) are calculated and compared with the standard performance data, and the degree of deterioration of the battery is determined based on the difference in the change rate characterized in that

In addition, the battery monitoring unit included in the present invention, the change value (ΔV) of the battery voltage compared to the amount of power consumption (Wh) after the reference period, and the change rate of the power usage time compared to the change value (ΔV) of the battery voltage are in the reference performance data In contrast, when all of the performance is less than 50%, it is characterized in that it is determined that the primary replacement is necessary according to the aging of the battery.

In addition, the battery monitoring unit included in the present invention additionally calculates the rate of change of the amount of discharge current (mAh) compared to the power use time and the change rate of the amount of power consumption (Wh) compared to the power use time, and in the state that it is determined that the first replacement is necessary , when the rate of change of the amount of power consumption (Wh) compared to the power use time exceeds twice the rate of change of the amount of discharge current (mAh) compared to the power use time .

The renewable energy sensor board according to an embodiment of the present invention can measure a temperature value and include a battery life management function to more effectively manage battery life.

1 is a conceptual diagram of a telemetry photovoltaic power generation test system
2 is a block diagram of the smart IT reference board (1)
3 is a more detailed configuration diagram of the smart IT reference board (1)
4 is a block diagram of a sensor board according to an embodiment of the present invention.
5 is a circuit diagram of the power noise processing unit 420 included in the smart IT reference board (1).
6 shows the first embodiment of the attenuator 421 of the power noise processing unit 420 .
7 is a second embodiment of the attenuation unit 421 of the power noise processing unit 420 .

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings in order to describe in detail enough that a person of ordinary skill in the art to which the present invention pertains can easily implement the technical idea of the present invention.

1 is a conceptual diagram of a telemetry photovoltaic power generation test system.

Referring to FIG. 1 , a system in which a large number of photovoltaic panels are installed to convert sunlight into electrical energy and store it is proposed.

Through detailed monitoring of such a plurality of solar panels, a system for monitoring whether solar power generation is operating with appropriate performance and whether the efficiency of solar power generation is falling must be established.

That is, in particular, a sensor module for measuring an environment disposed around a solar panel is disposed. For example, a sensor module for measuring panel temperature, panel ambient temperature, sunlight, humidity, and air volume is required.

The data measured by the plurality of sensor modules are transmitted to and processed by the smart IT reference board 1, which is defined as a development board capable of responding to a mobile environment.

On the development board, a test application that can install and test new APs, memory, and peripherals can be installed, and it is configured to be developed corresponding to the Android or iOS operating system, respectively.

FIG. 2 is a configuration diagram of the smart IT reference board 1 , and FIG. 3 is a more detailed configuration diagram of the smart IT reference board 1 .

2 and 3, the smart IT reference board 1 is provided with peripheral devices for instructing a compatibility test in the form of a touch panel 163,

It is formed in a structure to which the mobile memory 130 and the nonvolatile memory (flash memory, 130a) can be attached.

In addition, the voice recognition module 161 , the communication module 165 , etc. are configured to be detachably attached to the interface of the application processor 110 .

The smart IT reference board 1 includes a new application processor (AP) and a new mobile memory when applied to the mobile terminal 100, an application processor (AP) and a mobile memory 130, voice A compatibility test between the recognition module 161 and the communication module 165 may be performed.

Therefore, in order to conduct a reliable compatibility test between the application processor (AP), the mobile memory 130 , the touch panel 163 , the voice recognition module 161 , and the communication module 165 , each part is each It is configured to be detachable.

That is, the application processor 110 may be equipped with various types of mobile memory.

For example, when the application processor 110 is newly released, the application processor 110 selectively selects a mobile memory that meets the LPDDR4 (Low Power DDR4) standard and a mobile memory that meets the LPDDR3 (Low Power DDR3) standard. can be applied

Even if the memory 130 for mobile satisfies the standards of DDR3 and DDR4, characteristics for each manufacturer may exist, so the mobile terminal 100 including the new application processor 110 is for mobile to be applied before mass production A mounting test of the memory 130 should be performed.

Therefore, in the smart IT reference board 1 of this embodiment, the mobile memory 130 and the non-volatile memory (flash memory, 130a) are interfaced with the application processor 110 through an interposer or socket. configured to be connected.

For reference, in this embodiment, the method of performing the compatibility test of the memory 130 for mobile is mainly described, but in the same way, various sizes, various standards, and non-volatile memories (flash memory, 130a) and EMMC of various manufacturers (Embedded MultiMediaCard), the voice recognition module 161, and the communication module 165 may be tested for compatibility.

For reference, the method for performing voice recognition in the voice recognition module 161 includes the steps of storing user pronunciation information about the user's voice input to the recognition target whenever the voice recognition for the recognition target fails; The method may include matching user pronunciation information with the highest frequency among user pronunciation information to a recognition target. Through this, it is possible to identify the language of the user with unique pronunciation information. In addition, the voice recognition module 161 may operate in any one selected voice recognition mode from among a plurality of voice recognition modes each divided according to age, gender, a selected day of the week, and a selected time zone.

As described above, the smart IT reference board 1 includes a mobile terminal 100 , a mobile memory 130 , a memory power supply 210 , a voice recognition module 161 , a communication module 165 , and internal protection. It is configured to include a unit 410 .

The mobile terminal 100 includes an application processor 110 that performs arithmetic operations for operations such as execution of a test application, and a touch panel 163 for a user interface.

The mobile memory 130 is used as the main memory of the application processor 110 , and is detachably connected to the interface of the application processor 110 . For example, the mobile memory 130 may be detachably connected to the interface of the application processor 110 through an interposer or a socket.

The memory power supply unit 210 operates to adjust the voltage level of the driving power supplied to the mobile memory 130 according to the control of the test application.

For reference, a plurality of memory power supply units 210 are provided, and according to the operation state of the power supply unit, the power alarm in the memory test is controlled by dualizing it into an alarm mode and a cutoff mode, so that some of the plurality of power supply units has an abnormality. Even if there is, it may be configured so that the memory test can be continued without interruption of the test process.

That is, for example, a backflow prevention diode is provided at each output terminal of the plurality of memory power supplies, and sensing to detect the operation state of the plurality of memory power supplies and generate a signal for indicating the detected operation state of each power supply The unit is provided and has a control logic for classifying and controlling the power state of the test system into a normal mode, an alarm mode and a cut-off mode based on the operation state signal of each power supply unit, the power state of the test system and the operation of each power supply unit An output unit indicating a state may be provided.

The part test application may be stored in storage 140 or ROM 150,

When the mobile terminal 100 is booted, the test operation is performed while being loaded into the mobile memory 130 and accessed by the application processor 110 .

Since the operation process of the test application is displayed on the touch panel 163 , the user can control the test process of the test application or change the test procedure through the touch panel 163 .

For reference, the mobile terminal 100 includes a computer, a portable computer, an Ultra Mobile PC (UMPC), a workstation, a net-book, a PDA, a portable computer, a web tablet, and a wireless phone ( wireless phone, mobile phone, smart phone, digital camera, digital audio recorder, digital audio player, digital picture recorder ), a digital picture player, a digital video recorder, a digital video player, a device capable of transmitting and receiving information in a wireless environment, among various computing systems constituting a home network. It may include at least one, and in this embodiment, it is assumed that the terminal is a smart phone (mobile terminal) type terminal.

In order for the mobile terminal 100 to operate normally, the mobile memory 130 must be mounted. In this embodiment, the mobile memory 130 is detachably mounted from the outside of the mobile terminal 100 , and the mobile memory 130 is 130 is configured to be connected to an interface compatible with the mobile terminal 100 .

The application processor 110 of the mobile terminal 100 may control overall operations of the mobile terminal 100 . For example, the application processor 110 may perform calculation operations for operations such as booting of the mobile terminal 100 , integrity verification, and application execution.

The terminal integrity verification unit (DIV) may be implemented in the form of software, hardware, or a combination thereof. Further, the hardware may be an electrical/electronic circuit, a processor, a computer, an integrated circuit, integrated circuit cores, a microelectromechanical system (MEMS), passive components, or a combination thereof.

The software may be machine code, program instructions, firmware, embedded code, application software, or a combination thereof. The terminal integrity verification unit (DIV) implemented in the form of software may be stored in a cache memory in the application processor 110 and driven by the application processor 110 .

The security device 120 may receive an integrity value from the terminal integrity verification unit DIV of the application processor 110 and perform integrity verification on the received integrity value. For example, the security device 120 may include integrity-related data or a key value for each verification target (eg, a system component, an application, a system class, etc.) used in the mobile terminal 100 .

The memory 130 may be used as an operating memory, main memory, buffer memory, or cache memory of the mobile terminal 100 or the application processor 110 .

Files used by the application processor 110 may be loaded into the memory 130 , and files stored in the memory 130 may be accessed by the application processor 110 . The memory 130 may be a cache memory of the application processor 110 .

The storage 140 may store information, data, or files used in the mobile terminal 100 . For example, the storage 140 may store various data such as an application execution file used in the mobile terminal 100 , a boot-loader, a kernel image, an operating system driving file, and the like. For example, the storage 140 may include large-capacity nonvolatile memory devices such as a hard disk and flash memory.

The ROM 150 may store various information or program codes required for the operation of the mobile terminal 100 in the form of firmware. For example, the ROM 150 may include a booting control code required for booting the mobile terminal 100 . For example, data or program code stored in the ROM 150 may be immutable data or program code, and may be data or program code whose integrity has been verified.

The peripheral devices 160 may include interfaces for inputting data or commands to the application processor 110 or outputting data to an external device. Illustratively, the peripheral devices 160 include a user input interface such as a keyboard, a keypad, a button, a touch panel, a touch screen, a touch pad, a touch ball, a camera, a microphone, a gyroscope sensor, a vibration sensor, a piezoelectric element, or an LCD. User output interfaces such as a liquid crystal display (Liquid Crystal Display), an organic light emitting diode (OLED) display device, an active matrix OLED (AMOLED) display device, an LED, a speaker, and a motor may be included.

In addition, the peripheral devices 160 are graphic operation unit (GPU), GPS, heart rate sensor, camera, communication module, geunjo sensor, CIS (cmos image sensor) camera module, touch panel, EMMC (Embedded MultiMediaCard), voice recognition module It may include devices such as 161 and a communication module 165 .

On the other hand, data from the sensor board 310 of the telemetry photovoltaic test system is received by the communication module 165 of the smart IT reference board 1, and the data is processed in the test application and sent to the touch panel 163. is displayed

In this embodiment, the sensor board 310 is defined as a sensor board capable of measuring the amount of sunlight, air volume, temperature, and humidity, respectively,

In this embodiment, a new and renewable energy sensor board that can measure a temperature value as well as include a battery life management function will be described in detail.

4 is a block diagram of a sensor board according to an embodiment of the present invention.

Referring to FIG. 4 , the sensor board 310 according to the present embodiment can measure an external temperature value and an internal temperature value, respectively, and a battery life management function is added.

Here, the external temperature value may be defined as a temperature around the battery, and the internal temperature value may be defined as a temperature of an internal circuit performing a battery life management function. In FIG. 4, only the temperature sensor for measuring the internal temperature value is shown, and the sensor for measuring the external temperature value is omitted.

Referring to FIG. 4 , the sensor board 310 includes a temperature sensor 35 , a current measurement unit 31 , a voltage measurement unit 32 , an energy measurement unit 33 , and a battery monitoring unit 34 . .

When the temperature sensor 35 is provided, the process of correcting each of the data measured according to the sensed temperature value - the data of the current measuring unit 31 , the voltage measuring unit 32 , and the wattage measuring unit 33 - is performed do.

As an example of the temperature sensor 35 , the temperature sensor 35 may be configured to include a voltage generator and a temperature code output unit.

The voltage generator includes a first temperature element having a predetermined first resistance value and a second temperature element having a second resistance value, and the voltage level is changed according to the temperature change by the first and second temperature elements. Generate a corresponding voltage. In addition, the voltage generator generates a reference voltage that maintains a constant voltage level according to the driving voltage level even when a temperature change occurs.

In addition, the temperature code output unit generates a plurality of temperature codes by comparing the reference voltage and the temperature corresponding voltage. That is, it is a method in which temperature information is included in the temperature code.

As another example of the temperature sensor 35, the temperature sensor 35 may include a reference voltage output unit, a digital-analog conversion unit, a comparator, a digital signal generator, a storage unit, and a data output unit. can

The reference voltage output unit generates a reference voltage that changes in response to temperature.

The digital-analog converter converts a bit digital signal of N (an integer greater than or equal to 1) into an analog sensing voltage and outputs it.

The comparator compares the reference voltage and the analog sensing voltage, and outputs a comparison result.

The digital signal generator variably outputs the digital signal according to the comparison result of the comparator, and the storage unit stores the output signal (digital signal) of the digital signal generator at the first temperature.

The data output unit outputs data corresponding to the second temperature according to the output signal (digital signal) of the digital signal generator at the second temperature and the output signal of the storage unit.

The battery 330 of this embodiment is defined as a means for storing renewable energy, particularly solar energy.

The battery 330 supplies power to at least one load device having a constant power consumption in the discharging mode.

Here, the battery 330 may be defined as a rechargeable lead battery or a lithium ion battery, and the load device may be defined as a motor, a home electronic device, an industrial electronic device, a portable device, a base station device, and the like.

The current measuring unit 31 measures the current between the battery 330 and the load device, and the voltage measuring unit 32 measures the voltage of the battery 330 . In addition, the power amount measuring unit 33 measures the amount of power consumption of the battery 330 .

The battery monitoring unit 34 receives the data measured by the current measuring unit 31, the voltage measuring unit 32, and the wattage measuring unit 33 in real time, and monitors and stores the measured data based on time, and measures Controlled data to be displayed on the display device.

First, the battery monitoring unit 34 controls to output a warning from a point in time when the amount of power consumption (Wh) for one day exceeds a preset first reference amount of power consumption (Wh).

Next, the battery monitoring unit 34 controls to block discharging of the battery from a point in time exceeding the second reference amount of power consumption (Wh), which is greater than the first reference amount of power consumption (Wh), or additional power amount in consideration of the amount of reserve power can be controlled to be given.

In addition, the battery monitoring unit 34 grasps the standard performance data STD_DATA of the newly installed battery 330 up to a predetermined reference period STD to determine the performance index. Here, the predetermined reference period STD may be set as the most suitable period of about one week from the time a new battery is installed and used.

That is, the battery monitoring unit 34 detects the change value (ΔV) of the battery voltage according to the amount of power consumption (Wh) in a constant discharge condition generated by the load device for each time and stores it as the reference performance data (STD_DATA).

In this case, it is assumed that the power consumption (W) of the load device is constant. That is, in general, a system using a battery is designed in consideration of the power consumption (W) of the load device. In this embodiment, it is assumed that the power consumption (W) consumed by the load device is always constant in a normal state, and the deviation Even if , it is defined that it does not exceed 15%. In addition, it is most desirable to measure the change in the battery voltage until just before the discharge end voltage.

The battery monitoring unit 34 determines the change value (ΔV) of the battery voltage according to the amount of power consumption (Wh) for each time period after the new battery is installed and the performance index is identified, that is, even after the reference period (STD), and the reference performance data (STD_DATA) ) and determine the degree of deterioration of the battery based on the difference in the rate of change.

That is, the battery monitoring unit 34 detects the reference performance data STD_DATA of the newly installed battery 330 up to a predetermined reference period STD,

The change value (ΔV) of the battery voltage according to the amount of power consumption (Wh) under a constant discharge condition generated by the load device is identified by time, and the change value (ΔV) of the battery voltage compared to the amount of power consumption (Wh) and the battery voltage The power use time is calculated compared to the change value ΔV and stored as reference performance data STD_DATA. For reference, the power consumption Wh relative to the battery voltage change value ΔV may be calculated and used as the reference performance data STD_DATA instead of the battery voltage change value ΔV compared to the power consumption Wh.

At this time, the battery monitoring unit 34 calculates the change value (ΔV) of the battery voltage compared to the amount of power consumption (Wh) and the power usage time compared to the change value (ΔV) of the battery voltage even after the reference period (STD) to provide the reference performance data ( STD_DATA) and determine the degree of deterioration of the battery based on the difference in the change rate. At this time, it is preferable to determine the degree of aging for a period of about 7 to 10 days.

The battery monitoring unit 34 calculates the change value (ΔV) of the battery voltage relative to the amount of power consumption (Wh) after the reference period (STD) and the change rate of the power use time relative to the change value (ΔV) of the battery voltage as the reference performance data (STD_DATA) ), when the performance is less than 50%, it is judged that the primary replacement is necessary due to the aging of the battery.

Having a performance of 50% or less compared to the standard performance data STD_DATA means that the battery 330 is aging and has a performance of less than 50% compared to the standard performance data STD_DATA identified for a predetermined reference period (one week). Means that. Therefore, the criterion for determining the first replacement required state can be set as a performance degradation criterion of 60% or less, and in this embodiment, 50% is described as a criterion.

Meanwhile, the battery monitoring unit 34 may additionally calculate the rate of change of the amount of discharge current (mAh) compared to the time of power use and the rate of change of the amount of power consumption (Wh) compared with the time of power use. - The rate of change is calculated based on the reference performance data (STD_DATA) for a predetermined reference period (STD).

That is, when the battery monitoring unit 34 determines that the first replacement is required state, the rate of change of the amount of power consumption (Wh) compared to the time used for power exceeds two times the rate of change of the amount of discharge current (mAh) compared to the time used for power. , it is determined that the secondary replacement is required according to the aging of the battery 330 .

That is, if the rate of change of the amount of power consumption (Wh) compared to the time used for power exceeds twice the rate of change of the amount of discharge current (mAh) compared to the time used for power, it means that the amount of power consumption (Wh) compared to the time used for power is rapidly dropping. You can, which means you're not really doing much, so you can estimate the aging of the battery.

That is, the battery monitoring unit 34 may control to output a warning even in a state in which the primary replacement required state occurs, and when the secondary replacement necessary state additionally occurs, it may output a warning that the battery aging state is very serious.

Meanwhile, the touch panel 163 may display data calculated by the battery monitoring unit 34 and data transmitted from the current measuring unit 31 , the voltage measuring unit 32 , and the wattage measuring unit 33 .

Also, the touch panel 163 may display the daily power consumption (Wh) used by the load device, the accumulated power consumption amount, the excess power consumption amount, and the like.

In addition, since the touch panel 163 may display data calculated by the battery monitoring unit 34 , the performance degradation value of the battery 330 may be compared with the reference performance data STD_DATA and displayed. In addition, the degree of deterioration of the battery may be displayed in % units.

As described above, the proposed invention blocks or warns when excessive power consumption occurs by setting the amount of power consumption to be used per day. In other words, since the battery capacity is designed in consideration of the power consumption used, over-discharge of the battery occurs when excessive consumption occurs and the lifespan can be shortened.

In addition, the battery monitoring unit 34 of the sensor board 310 measures the daily power consumption. That is, it is possible to monitor the power consumption by grasping the power consumption by the power consumption used by the battery and displaying the accumulated usage amount.

In addition, the battery monitoring unit 34 constantly measures/monitors the charging/discharging voltage and current of the battery to monitor a change in the battery voltage according to the amount of power consumed when a load is used.

In addition, the battery monitoring unit 34 measures the battery discharge time (measures the time of using power). That is, by measuring the change in the discharge time of the battery according to the power consumption, it is possible to compare the change amount when the battery is used for a long time. That is, the amount of change compared to the initial required time is measured by comparing the discharging time of the initially installed battery and the discharging time of the battery used for a long time under the same discharging condition.

In addition, the battery monitoring unit 34 compares the discharge voltage and time of the battery according to the power consumption, and sets the amount of power that can be consumed daily according to the design.

A. Initial (at the time of installation) power consumption & battery voltage fluctuation check - (standard setting period: eg 7 days) -
1. Check the battery voltage during initial installation
2. Check battery voltage when initial power consumption occurs
3. Record battery voltage fluctuation range (reference value)
4. Record of electricity consumption (days) (standard value)
=> Record battery voltage fluctuation range according to power consumption (standard value)

B. Check power consumption & battery voltage fluctuation after time elapsed - (Standard setting period: Yes 7 days) -
1. Daily battery voltage check
2. Check the battery voltage when daily power consumption occurs
3. Daily battery voltage fluctuation record
4. Daily electricity usage record
=> Records battery voltage fluctuations according to daily power consumption

Referring to Tables 1 and 2, as the reference value (100%) of the battery voltage fluctuation range according to the power consumption based on "A", the battery voltage fluctuation range according to the power consumption as time elapses as in "B" is the value of "A". By indicating the change in battery according to power consumption compared to the reference value, the change in % over time is displayed in preparation for the change compared to 100% at the time of initial installation to predict the life of the battery.

In this way, by managing the daily power consumption and accumulated power consumption, the effect of the system's power use can be grasped, and the variation of the battery voltage can be managed daily to predict and manage the battery life, thereby facilitating maintenance and repair.

If the above-described operation procedure of the sensor board 310 is described in order, it can be summarized as follows.

1st: Voltage fluctuation compared to power consumption

1) Standard: Set the reference value with average data for an initial period after installation (eg 7 days)

2) Measure the change amount according to the fluctuation range after the standard setting is completed

- Comparing and calculating the amount of change in the voltage fluctuation range according to the amount of power consumption compared to the reference value

- Comparison based on the voltage range up to the battery low voltage setting

- If the voltage change compared to the amount of power consumption is less than 50%, the voltage fluctuation range is larger than that of the same amount of power consumption, so the battery life is expected to be shortened because the battery discharge is large.

Secondary: Power consumption time (discharge time) - Voltage fluctuation comparison

1) Standard: Set the reference value with average data for an initial period after installation (eg 7 days)

2) Power consumption time

- Comparison of power consumption time during 1V discharge and comparison of battery voltage variation and power consumption usage time compared to standard time

- When the voltage change range is less than 50% compared to the standard, the voltage change range is larger than the power usage time, so the battery life is expected to be shortened because it is discharged within a short time.

3rd : Compare the voltage fluctuation width and time_voltage fluctuation width compared to the amount of power consumption and when the same occurs less than 50%

- The battery life is expected to shorten by 50% or less compared to the standard, so it is a warning to analyze the factors that may affect the battery replacement time or shortened lifespan.

4th : Warning of discharge time due to abnormal current or overcurrent use

1) Standard: Set the reference value with average data for an initial period after installation (eg 7 days)

2) Comparing time and current and comparing it with the reference value on a time basis, if it is greater than 1, a warning about the effect of using overcurrent on shortening of usage time (need to check items or load usage)

5th : Comparison of time for current and amount of current_time_power to warn

<Change rate of discharge current (mAh) compared to power use time and change rate of power consumption (Wh) compared to power use time>

1) Standard: Set the reference value with average data for an initial period after installation (eg 7 days)

2) When a difference of 2 times or more occurs by comparing the calculated values with each other (when the rate of change of power consumption (Wh) compared to power use time exceeds twice the rate of change of discharge current (mAh) compared to power use time) of the battery It is necessary to check for over-discharge or battery replacement, maintenance, and repair.

Finally, when the 3rd and 5th results are simultaneously warned, the battery life is reduced to less than 50%, so it is necessary to check the replacement timing.

The change value (ΔV) of the battery voltage according to the amount of power consumption (Wh) under a constant discharge condition can be grasped for each time, and the degree of deterioration of the battery can be grasped based on the difference in the change rate.

Therefore, there is no need for separate equipment such as an electrolyte meter, and the degree of deterioration of the battery can be determined by checking the current between the battery and the load device, the voltage of the battery, and the amount of power consumed by the battery over time.

On the other hand, in order to cope with high-function and high-speed operation of electronic device systems in recent years, semiconductor integrated circuits are becoming more complex and the operating speed of the circuits is also increasing. As circuits constituting semiconductor devices become more complex, parasitic capacitance, parasitic inductance, and parasitic resistance are increasing. Therefore, noise countermeasures for power supply voltage wiring to supply stable power voltage to internal circuits are emerging as an important issue. .

Therefore, the proposed smart IT reference board 1 includes a power noise processing unit 420 . The power source noise processing unit 420 is connected to the decoupling capacitor and serves to reduce resonance noise caused by the power while the resistance value is varied.

5 is a circuit diagram of the power noise processing unit 420 included in the smart IT reference board 1 .

Referring to FIG. 5, the power noise processing unit 420 is electrically connected to the internal circuit unit and the power supply voltage supply pad ( VDD Pad) and the ground voltage supply pad (VSS Pad), and a decoupling capacitor (Cde-cap) connected in parallel with the internal circuit part and connected to the power supply (VDD) line connecting the internal circuit part and the power supply voltage supply pad (VDD Pad). and a variable resistance part (R).

For reference, the internal circuit unit refers to both a peripheral device and a memory device, but in the present embodiment, it is assumed that the memory 130 for mobile is greatly affected by power noise.

Since the voltage value at the location where the internal circuit is located can be expressed as the product of the impedance value at the same location and the operating current consumed by the circuit, if the current consumed by the circuit is determined, eventually the voltage fluctuation is proportional to the size of the impedance value. and, as the parasitic resistance Rde-cap of the decoupling capacitor Cde-cap increases, the impedance value at resonance decreases.

This result is a phenomenon that occurs because the loss in resonance increases as the value of the parasitic resistance (Rde-cap) increases. Similar results can be obtained even when the value of the metal resistance (Rdie) is large. However, if the value of the metal resistance (Rdie) increases, Since the voltage drop by DC current becomes large, it is unpreferable.

Therefore, in the present invention, the impedance value at resonance is similar to when the value of the parasitic resistance Rde-cap of the decoupling capacitor Cde-cap increases by connecting the series variable resistor R to the decoupling capacitor Cde-cap. to limit the voltage drop due to resonance.

The variable resistor unit R connects the decoupling capacitor Cde-cap and the ground (VSS) line so that the level difference between the power supplied to the power voltage supply pad (VDD Pad) and the power input to the internal circuit unit is minimized. It is configured so that it can be used by changing the resistance value.

FIG. 6 is a first embodiment of the attenuator 421 of the power noise processing unit 420 , and FIG. 7 is a second embodiment of the attenuator 421 of the power noise processing unit 420 .

Referring to FIGS. 6 and 7 , first of all, FIG. 6 is implemented with a plurality of resistance elements R1 to R4 each connected in series with a decoupling capacitor Cde-cap and having a fixed resistance value, and is switched on/off through The resistance value of the variable resistance unit R may be varied. In this case, it is preferable to select a resistance element capable of minimizing a voltage drop by using each of the resistance elements R1 to R4 having different resistance values.

Next, FIG. 7 shows a plurality of NMOS transistors T1 to T4 connected to the decoupling capacitor Cde-cap, and an external variable resistance control logic 10 at the gates of the plurality of NMOS transistors T1 to T3. It has a structure in which on/off control signals a1, a2, and a3 output from the are input to turn on/off each transistor according to the level of the on/off control signals a1, a2, a3.

At this time, when the levels of the on/off control signals a1, a2, and a3 are all low levels, the connection between the decoupling capacitor Cde-cap and the ground line is released. voltage was applied.

On the other hand, the resistance control unit 10 receives the on/off control signals a1, a2, a3 for turning on or off each of the transistors T1, T2, and T3 connected to the decoupling capacitor Cde-cap. As the output logic, it is enabled by the command signal (COMMAND) from the outside during the training process and outputs a combination of logic levels that each control signal (a1, a2, a3) can have, so that the combination with the least noise can be selected. and input the selected combination of control signals a1, a2, and a3 to the gates of the respective transistors T1, T2, and T3.

Therefore, when the metal resistance value is reduced through the power noise processing device 420 and a problem due to resonance becomes an issue, it is possible to attenuate power noise due to resonance, and accordingly, the driving power of the low-voltage, high-speed operation semiconductor memory is stably processed can do.

In addition, as another embodiment of the variable resistance unit, a switching variable resistance means having a switching operation and a function as a variable resistance element may be used. That is, the switching variable resistance means may include an output pulse generator that generates a variable amplitude output pulse according to a control signal, and a variable resistor that receives a variable amplitude output pulse and changes a switching operation and a resistance value.

Also, as another embodiment of the variable resistance unit, when a plurality of resistance segments are included in the variable resistance unit and a plurality of resistance value candidates that the variable resistance unit may have are arranged in an order of magnitude, the plurality of resistance value candidates have the same ratio It may be configured to form a geometric sequence. That is, the variable resistance unit is composed of a plurality of resistance segments and a plurality of switches connected to the plurality of resistance segments, and the plurality of switches are connected to the plurality of resistance segments by each bit of an N-bit control signal or a combination of each bit. A connection state is controlled, and a resistance value of the variable resistor unit may be determined according to an exponential function based on an N-bit control signal. Therefore, it is easy for the user to intuitively grasp the result of the resistance value change through the control code.

As such, those skilled in the art to which the present invention pertains will understand that the present invention may be embodied in other specific forms without changing the technical spirit or essential characteristics thereof. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. The scope of the present invention is indicated by the following claims rather than the above detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included in the scope of the present invention. do.

31: current measuring unit
32: voltage measuring unit
33: wattage measurement unit
34: battery monitoring unit
35: temperature sensor

Claims (6)

a battery for supplying power to at least one load device having a constant power consumption in a discharging mode;
a current measuring unit for measuring a current between the battery and the load device;
a voltage measuring unit measuring the voltage of the battery;
a power amount measurement unit for measuring the amount of power consumption of the battery;
A battery monitoring unit that receives data measured by the current measuring unit, the voltage measuring unit, and the wattage measuring unit in real time, monitors and stores the measured data based on time, and controls to display the measured data on a display device ; and
a temperature sensor for detecting a temperature to correct the data of the current measuring unit, the voltage measuring unit and the wattage measuring unit;
The temperature sensor may include: a reference voltage output unit for generating a reference voltage that changes in response to temperature; a digital-to-analog converter for converting a digital signal of N (an integer greater than or equal to 1) into an analog sensing voltage and outputting it; a comparator comparing the reference voltage and the analog sensing voltage and outputting a comparison result; a digital signal generator for variably outputting the digital signal according to the comparison result of the comparator; a storage unit for storing the digital signal output from the digital signal generating unit at a first temperature; and a data output unit for outputting data corresponding to the second temperature according to the digital signal output from the digital signal generator at a second temperature and an output signal from the storage unit.
delete According to claim 1,
The battery monitoring unit,
In grasping the reference performance data of the newly installed battery up to a predetermined reference period, the change value (ΔV) of the battery voltage according to the amount of power consumption (Wh) under a constant discharge condition generated by the load device is grasped for each time period. It is stored as reference performance data,
Even after the reference period, the change value (ΔV) of the battery voltage according to the amount of power consumption (Wh) is identified by time, compared with the reference performance data, and the degree of deterioration of the battery is determined based on the difference in the rate of change. Renewable energy sensor board.
According to claim 1,
The battery monitoring unit,
In grasping the reference performance data of the newly installed battery up to a predetermined reference period, the change value (ΔV) of the battery voltage according to the amount of power consumption (Wh) under a constant discharge condition generated by the load device is determined by time, Calculating the change value (ΔV) of the battery voltage compared to the amount of power consumption (Wh) and the power usage time compared to the change value (ΔV) of the battery voltage and storing it as the reference performance data,
Even after the reference period, the battery voltage change value (ΔV) compared to the amount of power consumption (Wh) and the power usage time compared to the battery voltage change value (ΔV) are calculated and compared with the reference performance data based on the difference in the change rate of the battery Renewable energy sensor board, characterized in that it grasps the degree of deterioration of the.
5. The method of claim 4,
The battery monitoring unit,
After the reference period, the change value of the battery voltage relative to the amount of power consumption (Wh) (ΔV) and the change rate of the power use time relative to the change value (ΔV) of the battery voltage are all 50% or less compared to the reference performance data. Renewable energy sensor board, characterized in that it is determined as a first replacement necessary state according to the aging of the battery when it has.
6. The method of claim 5,
The battery monitoring unit,
The rate of change of the amount of discharge current (mAh) compared to the power use time and the rate of change of the amount of power consumption (Wh) compared to the power use time are additionally calculated,
When the rate of change of power consumption (Wh) compared to power use time exceeds twice the rate of change of discharge current (mAh) compared to power use time in the state determined as the first replacement required state, 2 Renewable energy sensor board, characterized in that it is determined that the car needs to be replaced.

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