DEVICE FOR REMOTE MONITORING OF FOUNDATIONS OF OVERHEAD POWER TRANSMISSION LINES Russian patent published in 2022 - IPC E02D27/42 

FIELD: construction industry.

SUBSTANCE: invention relates to the foundations of the supports of overhead power lines and can be used in their manufacture and operation. The device for remote monitoring of the foundations of overhead power lines supports includes a base plate and a rack with a protective layer of concrete located on it, while the value of the protective layer of concrete is variable depending on the operating conditions of concrete in the height of the rack, includes shock-type emitters fixed directly during the manufacture of the foundation rack in the concrete of its upper part, made small-sized and fixed directly during manufacture in the protective layer of concrete foundation pillars evenly along its height emitters of variable frequency vibrations and sensors for fixing excited vibrations, made on the basis of small-sized elements of microprocessor technology. The outputs of the sensors for fixing excited vibrations through the switch of the sensors for fixing excited vibrations and the amplifier are connected to the signal inputs of bandpass filters, the control inputs of which are connected to the output of the frequency corrector for adjusting bandpass filters. The outputs of the bandpass filters through the combined inputs of the multipliers are connected to the inputs of the memory block of the current values of the parameters under study. The first inputs of the comparison blocks of the deviation of the amplitudes of the current most informative frequencies from the values measured on the new foundation are connected to the outputs of the memory block of the current values of the parameters under study, and the second inputs are connected to the outputs of the memory block of the parameters measured on the new foundation. The outputs of the comparison blocks are connected to the first inputs of the blocks for fixing the excess of the permissible deviation of the amplitudes of the current most informative frequencies from the values measured on the new foundation, the second inputs of which are connected to the outputs of the setpoint of the permissible deviation of the amplitudes of the current most informative frequencies from the values measured on the new foundation. The outputs of the blocks for fixing the excess of the permissible deviation of the amplitudes of the current most informative frequencies from the values measured on the new foundation are connected to the controller input through the block for warning the excess of the permissible deviation of the amplitudes of the current most informative frequencies. The timer is connected to the information input of the control register via a control pulse generator. The first output of the control register is connected to the control input of the shock type emitter, the second output is connected to the control input of the switch of variable frequency emitters, the third output is connected through a tunable generator of radiated frequencies to the signal input of the switch of variable frequency emitters, the fourth output is connected to the control input of the switch of sensors for fixing excited oscillations. The outputs of the switch of variable frequency emitters are connected to the inputs of variable frequency oscillation emitters, the outputs of the controller are connected to the inputs of the memory block of parameters measured on the new foundation, the setpoint of the permissible deviation of the amplitudes of the current most informative frequencies from the values measured on the new foundation, the frequency corrector of the bandpass filter settings, the timer, the control pulse generator and the reset input of the control register, the output of the memory block of the current values of the parameters under study is connected to the input of the controller, the controller is connected to the communication unit with the control room.

EFFECT: reliability in power supply, preventing pre-emergency and emergency situations based on monitoring the real condition of foundations and timely detection of loss of strength of concrete foundations of supports.

1 cl, 3 dwg