The utility model discloses a voltage meter intelligent sampling and alarm circuit for, including electric energy metering chip IC, the voltage sampling circuit and alarm circuit; the electric energy metering chip IC by 71M6521 company's Teridian chip, the voltage sampling circuit including voltage main circuit and auxiliary circuit of the voltage sampling; the voltage of main circuit and electric energy metering chip 71M6521 51 pin VA port connection, including R1M, R2M, resistor R3M, R4M, R5M, R6M, R7M and C1M filter capacitor; the voltage sampling circuit and power side pin 52 VB measurement chip 71M6521 is connected, including R8M, pressure resistance R9M, R10M, R11M, R12M, R13M, R14M and C2M filter capacitor, the alarm circuit comprises a current limiting resistor R15M and LED alarm indicator lamp D1. The technical proposal of the utility model has the advantages of simple circuit and low cost. The utility model not only has the characteristics of accurate measurement, but also can effectively improve the reliability of measurement.
【技术实现步骤摘要】
本技术属于智能电表领域,尤其涉及一种用于智能电表的电压采样及报警电路。
技术介绍
目前,智能电能表的电压和电流采样方式通常采用采集一路电压与两路电流数据,一路电压与两路电流数据采集可以精确计量正常模式下的用户电量,也可以利用两路电流数据采集进行对比,以便及时发现窃电现象,但是只有一路的电压采样回路一旦损坏,电量将不能正确累计,电表计量无法正常工作。
技术实现思路
本技术的目的在于提供一种用于智能电表的电压采样及报警电路,该智能电表的电压采样及报警电路克服了现有智能电能表采样方式的缺点,电路简单,降低了成本,不但具有精确计量的特点,而且又能有效提高计量可靠性。为达到上述目的,本技术的一种用于智能电表的电压采样及报警电路,包括电能计量芯片IC,其特征是:该电压采样及报警电路还包括电压采样电路和报警电路;所述电能计量芯片IC采用 Teridian公司生产的71M6521芯片,所述71M6521芯片支持二路电压采样的计量专用芯片;所述电压采样电路包括电压采样主回路和电压采样副回路;所述电压采样主回路与电能计量芯片71M6521的51脚VA端口连接,包括分压电阻R1M、R2M、R3M、R4M、R5M、R6M、R7M和滤波电容C1M,所述分压电阻R1M、R2M、R3M、R4M、R5M和R6M串接在电能计量芯片71M6521的51脚VA端口与NEUTRAL端之间,所述R7M和滤波电容C1M并接在电能计量芯片71M6521的51脚VA端口与GND之间;所述电压采样副回路与与电能计量芯片71M6521的52脚VB端连接,包括分压电阻R8M、R9M、R10M、R11M、R12M ...
【技术保护点】
一种用于智能电表的电压采样及报警电路,包括电能计量芯片IC,其特征是:该电压采样及报警电路还包括电压采样电路和报警电路;所述电能计量芯片IC采用 Teridian公司生产的71M6521芯片,所述71M6521芯片支持二路电压采样的计量专用芯片;所述电压采样电路包括电压采样主回路和电压采样副回路;所述电压采样主回路与电能计量芯片71M6521的51脚VA端口连接,包括分压电阻R1M、R2M、R3M、R4M、R5M、R6M、R7M和滤波电容C1M,所述分压电阻R1M、R2M、R3M、R4M、R5M和R6M串接在电能计量芯片71M6521的51脚VA端口与NEUTRAL端之间,所述R7M和滤波电容C1M并接在电能计量芯片71M6521的51脚VA端口与GND之间;所述电压采样副回路与与电能计量芯片71M6521的52脚VB端连接,包括分压电阻R8M、R9M、R10M、R11M、R12M、R13M、R14M和滤波电容C2M,所述分压电阻R8M、R9M、R10M、R11M、R12M和R13M串接在电能计量芯片71M6521的52脚VB端与NEUTRAL端之间,所述R14M和滤波电容C2M并接在 ...
【技术特征摘要】
1. 一种用于智能电表的电压采样及报警电路,包括电能计量芯片IC,其特征是:该电压采样及报警电路还包括电压采样电路和报警电路;所述电能计量芯片IC采用 Teridian公司生产的71M6521芯片,所述71M6521芯片支持二路电压采样的计量专用芯片;所述电压采样电路包括电压采样主回路和电压采样副回路;所述电压采样主回路与电能计量芯片71M6521的51脚VA端口连接,包括分压电阻R1M、R2M、R3M、R4M、R5M、R6M、R7M和滤波电容C1M,所述分压电阻R1M、R2M、R3M、R4M、R5M和R6M串接在电能计量芯片71M6521的51脚VA端口与NEUTRAL端之间,所述R7M和滤波电容C1M并...
【专利技术属性】
技术研发人员:胡生,马利民,张黄军,高雷,
申请(专利权)人:安徽永安电子科技有限公司,
类型:新型
国别省市:安徽;34
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