Abstract: Provided is a sewer inspection and/or maintenance system, comprising a base unit that can be moved in a sewer, a number of members, each of which is assigned at least one controllable actuator, wherein the members are movable relative to the base unit and relative to one another by means of the actuators assigned to them, an effector arranged at a free end of one of the members, and a control unit coupled on the one hand to the actuators and on the other to an input device, wherein the effector is movable by means of the input device and the control unit. Furthermore, a correspondingly designed method is provided.

Abstract: A connector unit is provided for a component of a sewer inspection and/or maintenance system, wherein the connector unit comprises: an energy transmission device for transmitting electrical energy between the connector unit and another connector unit, and a signal transmitting and/or signal receiving device which is designed to wirelessly transmit data between the connector unit and the additional connector unit, wherein the connector unit can be detachably coupled to the additional connector unit.

Abstract: A propulsion system is provided for advancing a cable of a sewer cleaning and/or sewer inspection system, comprising a propulsion device, a measuring device for measuring the advancement of the cable, and an evaluation device. The propulsion device and the measuring device are adapted to provide a first and a second measured value of the advancement of the cable independently of one another, and the evaluation device is adapted to form a difference between the first measured value and the second measured value. A control device may be provided which adjusts the advancement based on the determined difference. A correspondingly designed method is also provided.

Abstract: A propulsion system is provided for advancing a cable of a sewer cleaning and/or sewer inspection system, comprising a propulsion device, a measuring device for measuring the advancement of the cable, and an evaluation device. The propulsion device and the measuring device are adapted to provide a first and a second measured value of the advancement of the cable independently of one another, and the evaluation device is adapted to form a difference between the first measured value and the second measured value. A control device may be provided which adjusts the advancement based on the determined difference. A correspondingly designed method is also provided.

Abstract: A cable reel is provided, in particular for a pipe inspection system, the cable reel having a frame and a cable receptacle. The cable receptacle is rotatably arranged on the frame, it being possible to wind a cable onto the cable receptacle and unwind it from the cable receptacle. The cable receptacle has an inner cage and an outer cage, with the diameter of the inner cage being smaller than the diameter of the outer cage. The inner cage is arranged coaxially with respect to the outer cage and is inside the outer cage. It is possible to rotate the inner cage and the outer cage independently of one another, and the inner cage is receives a first cable portion of the cable and the outer cage receives a second cable portion of the cable.

Abstract: A cable reel is provided, in particular for a pipe inspection system, the cable reel having a frame and a cable receptacle. The cable receptacle is rotatably arranged on the frame, it being possible to wind a cable onto the cable receptacle and unwind it from the cable receptacle. The cable receptacle has an inner cage and an outer cage, with the diameter of the inner cage being smaller than the diameter of the outer cage. The inner cage is arranged coaxially with respect to the outer cage and is inside the outer cage. It is possible to rotate the inner cage and the outer cage independently of one another, and the inner cage is receives a first cable portion of the cable and the outer cage receives a second cable portion of the cable.

Abstract: Inspection system for inspection or cleaning of pipes (5), wherein the inspection system comprises an inspection or cleaning means (15) and a control means (10), and wherein the inspection system comprises a first transmission/receiver means (20; 40) assigned to the control means (10) and a second transmission/receiver means (30) assigned to the inspection or cleaning means (15) for wireless transmission of control or measurement data between the inspection or cleaning means (15) and the control means (10).

Abstract: A focusing system is provided, in particular, for a camera unit of an inspection system, in particular, a pipe inspection system, comprising a distance measuring device for measuring a distance to an object, a control means operatively coupled to the distance measuring device, and an optical lens configured as liquid lens and operatively coupled to the control means, wherein the control means is adapted to adjust the focal distance of the liquid lens by means of the distance data received from the distance measuring device. Further, a camera unit comprising an imaging means and an inventive focusing system assigned to the imaging means, and an inspection system having an inventive camera unit are provided.

Abstract: Inspection system for inspection or cleaning of pipes (5), wherein the inspection system comprises an inspection or cleaning means (15) and a control means (10), and wherein the inspection system comprises a first transmission/receiver means (20; 40) assigned to the control means (10) and a second transmission/receiver means (30) assigned to the inspection or cleaning means (15) for wireless transmission of control or measurement data between the inspection or cleaning means (15) and the control means (10).