Abstract: A device for determining the physiological condition of a person in a simple manner, which device measures the pulse rate and based on that additionally determines the heart rate variability. In addition, at least one parameter should be used for the history of one of the two above-mentioned values. The deviation of the pulse rate and the heart rate variability from a normal variable is preferably integrated and used as an additional indicator. The device preferably includes a wearable electrocardiography device.

Abstract: The invention relates to a device for determining the current stress state of a person in a simple manner, which device measures the pulse rate and based on that additionally determines the heart rate variability. In addition, at least one parameter should be used for the history of one of the two above-mentioned values. The deviation of the pulse rate and the heart rate variability from a normal variable is preferably integrated and used as an additional stress indicator. The device preferably includes a wearable electrocardiography device.

Abstract: For easy determination of the current stress condition of a person, a device is proposed that detects the pulse rate and therefrom additionally determines the heart rate variability. In addition, at least one parameter related to the history of one of the two above mentioned values shall be used. Preferably, the deviation of the cardiac frequency and of the heart rate variability from a reference value is integrated and used as an additional stress indicator.

Abstract: The invention relates to a device for monitoring a yarn (1), which is moving in its longitudinal direction, using a measuring head and an evaluation unit (7) which is spatially separate from and connected to the measuring head. To enable optimum use of measuring heads operating according to different physical principles without unduly increasing the outlay, the measuring head includes a first part (2) operating according to a first measuring principle and having a connection (5) to a first part (6) of the evaluation unit for making an evaluation according to the first measuring principle. The measuring head then comprises a further part (9) operating according to a further measuring principle and having a releasable connection (8, 10) to the first part. In addition, the evaluation unit likewise comprises a further part connected by a releasable connection for the evaluation according to the further measuring principle.