Elevator faults forewarn system and method for early warning thereof
Technical field
The present invention relates to a kind of elevator faults forewarn system and method for early warning thereof.
Background technology
Elevator uses very extensive in modern architecture, daily life of can mediating a settlement interwoveness.In running process of elevator, need to ensure general safety performance, so just require whether elevator can normally work by all parts of OBD (On-Board Diagnostics) detection in real time.And at present technology is to the detection of elevator faults, mostly all can will detect when elevator produces fault, it does not possess warning function as seen, and if have people to take elevator when fault, then may there is danger, therefore be necessary to make improvements.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of elevator faults forewarn system and method for early warning thereof, can monitor the running state of elevator, prediction elevator faults, ensures elevator safety operation.
The technical solution adopted for the present invention to solve the technical problems is:
Elevator faults forewarn system, it is characterized in that comprising monitoring and control centre, the car sensor being arranged at the towing machine sensor on towing machine and being arranged on car, described towing machine sensor is connected with monitoring and control centre respectively with car sensor, when having elevator normal operation in described monitoring and control centre, towing machine is at the spectrogram of each operation phase and the car spectrogram in each operation phase, and monitoring and control centre can carry out process contrast to the data of towing machine sensor and car sensor.
Described towing machine sensor and car sensor are 3-axis acceleration sensor.
Described lift car is outside equipped with the sensor noise be connected with monitoring and control centre, and when having elevator normal operation in described monitoring and control centre, car external noise is at the spectrogram of each operation phase, and monitoring and control centre can carry out process contrast to the data of sensor noise.
Elevator faults method for early warning, is characterized in that including following steps:
When step one, elevator operation, by being arranged at towing machine sensor on towing machine, being arranged at the car sensor on car and being arranged on the noise data outside the vibration data of collection elevator towing machine, car under the different motion stage of car external noise sensor and car, and transfer to monitoring and control centre;
Step 2, monitoring and control centre carry out fast Fourier transform to the noise data outside the vibration data of towing machine, car and car, draw towing machine, the cabin elevator rumble spectrum figure under the different motion stage, and the outer noise pattern of elevator under the different motion stage of car;
Step 3, monitoring and control centre is the rumble spectrum figure gathered, the rumble spectrum figure of the elevator normal operation of noise pattern and monitoring and control centre internal memory, noise pattern contrasts, if the towing machine rumble spectrum figure gathered, car vibrations spectrogram, any one or multiple spectrograms 1.5 ~ 3 times of normal amplitude under the amplitude of certain frequency range or multiple frequency range is more than or equal to this frequency range in car external noise spectrogram, then assert that elevator occurs or will break down, carry out early warning, and overhaul, if all do not exceed 1.5 ~ 3 times of normal amplitude in the amplitude of full frequency band, then think that elevator is in normal operation.
In described step 3, if the towing machine rumble spectrum figure gathered, car vibrations spectrogram, any one or multiple spectrograms 2 times of normal amplitude under the amplitude of certain frequency range or multiple frequency range is more than or equal to this frequency range in car external noise spectrogram, then assert that elevator occurs or will break down, carry out early warning, if all do not exceed 2 times of normal amplitude in the amplitude of full frequency band, then think that elevator is in normal operation.
The invention has the beneficial effects as follows: the present invention is by being arranged at the towing machine sensor on towing machine, be arranged at the car sensor on car and be arranged on the sensor noise collection elevator towing machine under the different motion stage outside car, noise data outside the vibration data of car and car, and transfer to monitoring and control centre, monitoring and control centre is to towing machine, noise data outside the vibration data of car and car carries out fast Fourier transform, draw towing machine, the rumble spectrum figure of cabin elevator under the different motion stage, and the outer noise pattern of elevator under the different motion stage of car, and with the rumble spectrum figure of elevator normal operation, noise pattern contrasts, whether the amplitude contrasting each frequency range is abnormal, realize the early warning of elevator faults, its method of inspection is novel, practicality is high, very reliable, by system of the present invention, effectively can predict the failure condition of elevator, further increase the safety that elevator runs, ensure that the normal operation of elevator.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described:
Fig. 1 is system chart of the present invention;
Fig. 2 is the contrast spectrogram of elevator in a certain operation phase.
Detailed description of the invention
Be clearly and completely described below with reference to embodiment and the accompanying drawing technique effect to design of the present invention, concrete structure and generation, to understand object of the present invention, characteristic sum effect fully.Obviously; described embodiment is a part of embodiment of the present invention, instead of whole embodiment, based on embodiments of the invention; other embodiments that those skilled in the art obtains under the prerequisite not paying creative work, all belong to the scope of protection of the invention.
With reference to Fig. 1, elevator faults forewarn system of the present invention, comprise monitoring and control centre 1, the car sensor 3 being arranged at the towing machine sensor 2 on towing machine and being arranged on car, towing machine sensor 2 and car sensor 3 are 3-axis acceleration sensor, and towing machine sensor 2 is connected with monitoring and control centre 1 respectively with car sensor 3, monitoring and control centre 1 can be local PC can be also remote terminal, selects according to actual needs.
When having elevator normal operation in monitoring and control centre 1, towing machine is at the spectrogram of each operation phase and the car spectrogram in each operation phase, and monitoring and control centre 1 can carry out fast Fourier transform process to the data of towing machine sensor 2 and car sensor 3, and contrast with spectrogram during contrast normal operation, thus effectively can predict the failure condition of elevator, improve the safety that elevator runs, ensure that the normal operation of elevator.
In a preferred approach, in order to improve pre-alerting ability further, the sensor noise 4 be connected with monitoring and control centre 1 can be outside equipped with at lift car, when having elevator normal operation in monitoring and control centre 1, car external noise is at the spectrogram of each operation phase, and monitoring and control centre 1 can carry out fast Fourier transform process to the data of sensor noise 4, and contrast with spectrogram during contrast normal operation, thus improve pre-alerting ability and the reliability of elevator faults forewarn system of the present invention further.
Elevator faults method for early warning of the present invention, in conjunction with above-mentioned elevator faults forewarn system, includes following steps:
When step one, elevator operation, by being arranged at towing machine sensor 2 on towing machine, being arranged at the car sensor 3 on car and being arranged on the noise data outside the three shaft vibration data of collection elevator towing machine, car under the different motion stage of car external noise sensor 4 and car, and transfer to monitoring and control centre 1;
Noise data outside three shaft vibration data of step 2, monitoring and control centre 1 pair of towing machine, car and car carries out fast Fourier transform, draw towing machine, the cabin elevator rumble spectrum figure under the different motion stage, and the outer noise pattern of elevator under the different motion stage of car;
Step 3, monitoring and control centre 1 is the rumble spectrum figure gathered, the rumble spectrum figure of the elevator normal operation of noise pattern and monitoring and control centre 1 internal memory, noise pattern contrasts, if the towing machine rumble spectrum figure gathered, car vibrations spectrogram, any one or multiple spectrograms 2 times of normal amplitude under the amplitude of certain frequency range or multiple frequency range is more than or equal to this frequency range in car external noise spectrogram, then assert that elevator occurs or will break down, carry out early warning, and overhaul, if all do not exceed 2 times of normal amplitude in the amplitude of full frequency band, then think that elevator is in normal operation.
With reference to Fig. 2, Fig. 2 is the contrast spectrogram of elevator in a certain operation phase, in figure, solid line 5 is the spectrogram of this operation phase of monitoring and control centre 1 internal memory, dotted line 6 is the data that gather in real-world operation this operation phase of elevator and spectrogram after carrying out Fourier transform, as shown in the figure, be A2 in the amplitude of f1 frequency range dotted line 6, the amplitude of solid line 5 is A1, A2 > 2 × A1, then think that elevator occurs or will break down, monitoring and control centre 1 carries out early warning, and notifies that maintainer overhauls elevator.
In actual applications, the limiting safe amplitude of the spectrogram of elevator real-world operation can need 1.5 ~ 3 times that are set to normal amplitude according to client.
By elevator faults early warning forewarn system of the present invention and method for early warning thereof, can monitor in real time the operation conditions of elevator, and effectively can predict the failure condition of elevator, further increase the safety that elevator runs, ensure that the normal operation of elevator.
In the elevator faults early warning forewarn system and method for early warning thereof of the invention described above, by 3-axis acceleration sensor, sensor noise 4 to vibration and the collection of noise data, and fast Fourier transform is carried out to institute's image data, all belong to prior art and data processing method, do not repeat them here.
Above better embodiment of the present invention is illustrated, but it is not restricted to the utilization described in specification sheets and embodiment, it can be applied to various applicable the field of the invention completely, for those skilled in the art, can easily realize other amendment, therefore do not deviating under the universal that claim and equivalency range limit, the present invention does not limit with specific details and illustrates here and the legend described.