Drive control device and drive control system comprising same

A drive control system that comprises a transmitting apparatus and a plurality of drive control apparatuses and drives and controls a plurality of devices to be controlled, wherein

• the transmitting apparatus comprises:
• a control information addition apparatus that frequency-multiplexes a plurality of control signals, and
• an electric wire that supplies power and the plurality of control signals to the plurality of drive control apparatuses,
• detection frequencies different from each other are set in the plurality of devices to be controlled, respectively,
• the plurality of control signals correspond to the plurality of devices to be controlled, respectively,
• a frequency of each of the plurality of control signals is close to a detection frequency set in a corresponding device to be controlled,
• each of the plurality of drive control apparatuses drives and controls a target device among the plurality of devices to be controlled and comprises:
• a driver that drives the target device by using the power,
• a detection current generator that generates a detection current whose frequency is a detection frequency set in the target device,
• a magnetic field response element in which the detection current flows, an impedance of the magnetic field response element varying in response to a magnetic field generated around the electric wire, and
• a signal processor that detects the control signal corresponding to the target device based on an output from the magnetic field response element and controls the target device based on the detected control signal, and
• a detection frequency of a detection current generated by the detection current generator in one drive control apparatus among the plurality of drive control apparatuses is different from a detection frequency of a detection current generated by the detection current generator in another drive control apparatus among the plurality of drive control apparatuses.

A drive control apparatus that receives power and a plurality of frequency-multiplexed control signals through an electric wire and drives and controls a device to be controlled, wherein

• a detection frequency is set in the device to be controlled,
• one of the plurality of control signals is a control signal corresponding to the device to be controlled and a frequency of the control signal is close to the detection frequency, and
• the drive control apparatus comprising:
• a driver that drives the device to be controlled by using the power,
• a detection current generator that generates a rectangular-wave detection current whose frequency is the detection frequency,
• a magnetic field response element in which the detection current flows, an impedance of the magnetic field response element varying in response to a magnetic field generated around the electric wire, and
• a signal processor that detects the control signal corresponding to the device to be controlled from an output from the magnetic field response element and controls the device to be controlled based on the detected control signal.

A drive control apparatus that receives power and a plurality of frequency-multiplexed control signals through an electric wire and drives and controls a first to an nth (n is an integer greater than or equal to 2) devices to be controlled, wherein

• a first to an nth detection frequencies different from each other are set in the first to the nth devices to be controlled, respectively,
• a first to an nth control signals of the plurality of control signals correspond to the first to the nth devices to be controlled, respectively,
• a frequency of the kth (k is an integer greater than or equal to 1 and smaller than or equal to n) control signal is close to a kth detection frequency,
• the drive control apparatus comprising:
• a driver that drives the first to the nth devices to be controlled by using the power,
• a detection current generator that generates a detection current whose frequency is the first to the nth detection frequencies,
• a magnetic field response element in which the detection current flows, an impedance of the magnetic field response element varying in response to a magnetic field generated around the electric wire, and
• a signal processor that detects the first to the nth control signals from an output from the magnetic field response element and controls the first to the nth devices to be controlled based on the detected first to nth control signals, respectively.