| 摘要 |
A method for determining a distance between a radar sensor and a reflection surface of a material using a pulse measurement process is provided, the radar sensor being energized via a two-wire control loop (27) which also allows for data communication, and an internal energy store (32), whereby the pulse measurement process comprises at least two phases, whereby in a first phase, an echo profile is generated, and in a second phase, the echo profile is analyzed to calculate the distance, whereby the first phase is interrupted at least one time to recharge the energy store (32) via the two-wire control loop (27). Further, a radar sensor is provided using a pulse measurement process for determining a distance, whereby the radar sensor is provided with a power supply unit with a two-wire control loop (27) and an internal energy store (32), energizing the radar sensor, whereby the radar sensor further comprises a microcontroller, the microcontroller (16) controlling the voltage of the energy store (32) during a first phase of the pulse measurement process, in which the echo profile is generated, by activating/deactivating the transmit/receipt circuit (34), and interrupting the first phase at least one time, to recharge the energy store (32).
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