Abstract: A detection device for detecting a blood count parameter of a blood component in a blood vessel comprising a transmitter, a receiver, a loss detector, and a processor. The transmitter injects a first transmit signal into the blood vessel at a first frequency and a second transmit signal into the blood vessel at a second frequency. The receiver receives a first receive signal at the first frequency and a second receive signal at the second frequency. The loss detector determines a first loss value on the basis of the first transmit signal and the first receive signal, and determines a second loss value on the basis of the second transmit signal and the second receive signal. The processor determines a relaxation time constant of the blood component in accordance with the frequency having the greater loss value, and determines the blood count parameter in accordance with the determined relaxation time constant.

Abstract: An armband comprising a detection device for detecting a blood count parameter in a blood vessel of the arm and an adjustment device for adjusting a predefined contact pressure of the armband on the arm.

Abstract: A detection device for detecting a blood count parameter in a blood vessel, comprising a transmitter to inject a first transmit signal of a first frequency into the blood vessel and a second transmit signal of a second frequency into the blood vessel, a receiver to receive a first receive signal at the first frequency and a second receive signal at the second frequency, a loss detector to determine a first loss value on the basis of the first transmit signal and the first receive signal at the first frequency, and to determine a second loss value on the basis of the second transmit signal and the second receive signal at the second frequency, and a processor to determine a first frequency shift of the first loss value relative to a first reference loss value, determine a second frequency shift of the second loss value relative to a second reference loss value, and determine the blood count parameter on the basis of the first frequency shift and the second frequency shift.

Abstract: A detection device for detecting a blood count parameter in a blood vessel, comprising a transmitter having a number of transmit antennas for transmitting at least one transmit signal, a receiver having a number of receive antennas for receiving at least one receive signal, a processor to select a detection configuration comprising one of the transmit antennas and one of the receive antennas and select a second detection configuration comprising one of the transmit antennas and one of the receive antennas, and a loss detector that is designed, when the first detection configuration is selected to transmit a transmit signal, to detect a first loss value on the basis of the transmit signal and a receive signal, and, when the second detection configuration is selected to transmit a transmit signal, detect a second loss value on the basis of the transmit signal and a receive signal. The processor is designed to select the detection configuration having the lower loss value to detect the blood count parameter.

Abstract: A detection device for detecting a blood count parameter in a blood vessel, comprising a transmitter having a number of transmit antennas for transmitting at least one transmit signal, a receiver having a number of receive antennas for receiving at least one receive signal, a processor to select a detection configuration comprising one of the transmit antennas and one of the receive antennas and select a second detection configuration comprising one of the transmit antennas and one of the receive antennas, and a loss detector that is designed, when the first detection configuration is selected to transmit a transmit signal, to detect a first loss value on the basis of the transmit signal and a receive signal, and, when the second detection configuration is selected to transmit a transmit signal, detect a second loss value on the basis of the transmit signal and a receive signal. The processor is designed to select the detection configuration having the lower loss value to detect the blood count parameter.

Abstract: A detection device for detecting a blood count parameter of a blood component in a blood vessel comprising a transmitter, a receiver, a loss detector, and a processor. The transmitter injects a first transmit signal into the blood vessel at a first frequency and a second transmit signal into the blood vessel at a second frequency. The receiver receives a first receive signal at the first frequency and a second receive signal at the second frequency. The loss detector determines a first loss value on the basis of the first transmit signal and the first receive signal, and determines a second loss value on the basis of the second transmit signal and the second receive signal. The processor determines a relaxation time constant of the blood component in accordance with the frequency having the greater loss value, and determines the blood count parameter in accordance with the determined relaxation time constant.

Abstract: An armband comprising a detection device for detecting a blood count parameter in a blood vessel of the arm and an adjustment device for adjusting a predefined contact pressure of the armband on the arm.