收藏本站
ADE7518
Line Cycle Active Energy Accumulation Mode
In line cycle active energy accumulation mode, the energy
accumulation of the ADE7518 can be synchronized to the
voltage channel zero crossing so that active energy can be
accumulated over an integer number of half-line cycles. The
ACTIVE ENERGY
NO LOAD
THRESHOLD
ACTIVE POWER
NO LOAD
THRESHOLD
APSIGN FLAG
APNOLOAD POS NEG POS APNOLOAD
INTERRUPT STATUS REGISTERS
Figure 55. Energy Accumulation in Watt-Absolute Accumulation Mode
Active Energy Pulse Output
All of the ADE7518 circuitry has a pulse output whose frequency is
proportional to active power (see the Active Power Calculation
section). This pulse frequency output uses the calibrated signal
from the WGAIN register output, and its behavior is consistent
with the setting of the active energy accumulation mode in the
ACCMODE register (0x0F). The pulse output is active low and
should be preferably connected to an LED, as shown in Figure 66.
advantage of summing the active energy over an integer number
of line cycles is that the sinusoidal component in the active energy
is reduced to 0. This eliminates any ripple in the energy calculation.
Energy is calculated more accurately and more quickly because
the integration period can be shortened. By using this mode,
the energy calibration can be greatly simplified, and the time
required to calibrate the meter can be significantly reduced.
In line cycle active energy accumulation mode, the ADE7518
accumulates the active power signal in the LWATTHR register
for an integral number of line cycles, as shown in Figure 56. The
number of half-line cycles is specified in the LINCYC register.
The ADE7518 can accumulate active power for up to 65,535
half-line cycles. Because the active power is integrated on an
integer number of line cycles, the CYCEND flag in the Interrupt
Status 3 SFR (MIRQSTH, 0xDE) is set at the end of an active
energy accumulation line cycle. If the CYCEND enable bit in
the Interrupt Enable 3 SFR (MIRQENH, 0xDB) is set, the 8052
core has a pending ADE interrupt. The ADE interrupt stays
active until the CYCEND status bit is cleared (see the Energy
Measurement Interrupts section). Another calibration cycle
starts as soon as the CYCEND flag is set. If the LWATTHR
register is not read before a new CYCEND flag is set, the
LWATTHR register is overwritten by a new value.
TO
DIGITAL-TO-FREQUENCY
CONVERTER
WGAIN[11:0]
OUTPUT
FROM
LPF2
%
+
+
48
0
WATTOS[15:0]
WDIV[7:0]
FROM VOLTAGE
CHANNEL
ADC
LPF1
ZERO-CROSSING
DETECTION
CALIBRATION
CONTROL
23
LWATTHR[23:0]
0
ACTIVE ENERGY
IS ACCUMULATED IN
THE INTERNAL REGISTER,
AND THE LWATTHR
REGISTER IS UPDATED
AT THE END OF THE LINCYC
HALF-LINE CYCLES
LINCYC[15:0]
Figure 56. Line Cycle Active Energy Accumulation
Rev. 0 | Page 52 of 128
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
ADE7569ASTZF16 IC ENERGY METER MCU 16K 64LQFP
ADE7752BARWZ-RL IC ENERGY METERING 3PHASE 24SOIC
ADE7755ARSZ IC ENERGY METERING 1PHASE 24SSOP
ADE7757ARNZRL IC ENERGY METERING 1PHASE 16SOIC
ADE7758ARWZRL IC ENERGY METERING 3PHASE 24SOIC
ADE7761AARSZ-RL IC ENERGY METERING 1PHASE 20SSOP
ADE7761BARSZ-RL IC ENERGY METERING 1PHASE 20SSOP
ADE7768ARZ-RL IC ENERGY METERING 1PHASE 16SOIC
相关代理商/技术参数
ADE7566 制造商:AD 制造商全称:Analog Devices 功能描述:Single-Phase Energy Measurement IC with 8052 MCU, RTC, and LCD Driver
ADE7566ACPZF16 制造商:AD 制造商全称:Analog Devices 功能描述:Single-Phase Energy Measurement IC with 8052 MCU, RTC, and LCD Driver
ADE7566ACPZF161 制造商:AD 制造商全称:Analog Devices 功能描述:Single-Phase Energy Measurement IC with 8052 MCU, RTC and LCD driver
ADE7566ACPZF162 制造商:AD 制造商全称:Analog Devices 功能描述:Single-Phase Energy Measurement IC with 8052 MCU, RTC, and LCD Driver
ADE7566ACPZF16-RL 制造商:AD 制造商全称:Analog Devices 功能描述:Single-Phase Energy Measurement IC with 8052 MCU, RTC, and LCD Driver
ADE7566ACPZF16-RL1 制造商:AD 制造商全称:Analog Devices 功能描述:Single-Phase Energy Measurement IC with 8052 MCU, RTC and LCD driver
ADE7566ACPZF16-RL12 制造商:AD 制造商全称:Analog Devices 功能描述:Single-Phase Energy Measurement IC with 8052 MCU, RTC, and LCD Driver
ADE7566ACPZF8 制造商:AD 制造商全称:Analog Devices 功能描述:Single-Phase Energy Measurement IC with 8052 MCU, RTC, and LCD Driver