Bidirectional electric energy metering device and bidirectional electric energy metering system

The utility model discloses a bidirectional electric energy metering device and a bidirectional electric energy metering system. The bidirectional electric energy metering device comprises a bidirectional electric energy metering chip, a microprocessor, a current sampling and conditioning module, a voltage sampling and conditioning module, a display module, a key module and a nonvolatile memory, wherein the display module, the key module and the nonvolatile memory are electrically connected with the microprocessor. Wherein the bidirectional electric energy metering chip and the nonvolatile memory are in bidirectional communication connection with the microprocessor, and the bidirectional electric energy metering chip is connected with a power transmission line between a public power grid and a user through the current sampling and conditioning module and the voltage sampling and conditioning module. Compared with the prior art, the bidirectional electric energy metering device and thebidirectional electric en