CN113721167A - Transformer voiceprint vibration detection system based on Internet of things framework - Google Patents
Transformer voiceprint vibration detection system based on Internet of things framework Download PDFInfo
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- CN113721167A CN113721167A CN202111048729.2A CN202111048729A CN113721167A CN 113721167 A CN113721167 A CN 113721167A CN 202111048729 A CN202111048729 A CN 202111048729A CN 113721167 A CN113721167 A CN 113721167A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/62—Testing of transformers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
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Abstract
The technical scheme of the invention is realized as follows: the utility model provides a transformer vocal print vibration detecting system based on thing networking framework which characterized in that: the monitoring device comprises a transformer monitoring unit arranged on a transformer; the data receiving device is used for receiving various data of the transformer monitoring unit and transmitting the data to the computer equipment; the computer equipment is connected with the data receiving device; the method is characterized in that: the transformer monitoring unit is used for acquiring vibration signals, transformer temperature and audio signals at each monitored position on the surface of the transformer; it comprises a singlechip; the data transmitting device is connected with the singlechip and comprises a wireless radio frequency transmitter; a digital information processor; the interface module is connected with a three-axis acceleration sensor and a temperature sensor; the device also comprises a sound sending unit; the invention has the beneficial effects that: the vibration monitoring of the transformer is accurate and stable.
Description
Technical Field
The invention relates to the technical field of transformer detection, in particular to a transformer voiceprint vibration detection system based on an internet of things architecture.
Background
The internet of things is that any object or process needing monitoring, connection and interaction is collected in real time through various devices and technologies such as various information sensors, radio frequency identification technologies, global positioning systems, infrared sensors, laser scanners and the like, various required information such as sound, light, heat, electricity, mechanics, chemistry, biology, positions and the like is collected, and the ubiquitous connection of objects, objects and people is realized through various possible network accesses, so that the intelligent sensing, identification and management of the objects and the processes are realized; the internet of things is an information bearer based on the internet, a traditional telecommunication network and the like, and all common physical objects which can be independently addressed form an interconnected network.
A transformer is a device that changes an alternating voltage using the principle of electromagnetic induction, and main components are a primary coil, a secondary coil, and an iron core (magnetic core). In electrical equipment and wireless circuits, the high-voltage power supply is often used for voltage rise and fall, impedance matching, safety isolation and the like. In a generator, an electrical potential can be induced in a coil, whether the coil is moved through a magnetic field or a magnetic field is moved through a stationary coil. In both cases, the value of the magnetic flux is constant, but the amount of the magnetic flux linked with the coil varies, which is the principle of mutual induction. A transformer is a device for transforming voltage, current and impedance by using mutual electromagnetic induction.
The transformer is a power transmission and transformation core device, mechanical vibration can be generated during operation, a transformer winding can vibrate under the action of current electrodynamic force, an iron core can vibrate due to magnetostriction under the action of an alternating magnetic field, and the vibration can influence the mechanical stability of the transformer; in the existing patent documents, for example, patent document No. CN103884415B, a test point is set on a transformer, and a vibration acceleration sensor is mounted on the test point, and then the transformer is monitored through data transmission; however, the sensor is adsorbed on the transformer through the permanent magnet, but the information transmission of the sensor may be affected by the fixing mode of the permanent magnet, even the working stability of the transformer is affected, and the transmission effect of vibration affects the detection effect along with different installation fineness of each sensor; meanwhile, errors may exist in the transmission process by adopting single vibration sensing, and the transmission process is difficult to ensure.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a transformer voiceprint vibration detection system based on an internet of things architecture, which is used for solving the problems in the background technology.
The technical scheme of the invention is realized as follows: the utility model provides a transformer vocal print vibration detecting system based on thing networking framework which characterized in that: the monitoring device comprises a transformer monitoring unit arranged on a transformer; the data receiving device is used for receiving various data of the transformer monitoring unit and transmitting the data to the computer equipment; the computer equipment is connected with the data receiving device; the method is characterized in that: the transformer monitoring unit is used for acquiring vibration signals, transformer temperature and audio signals at each monitored position on the surface of the transformer; it comprises a singlechip; the data transmitting device is connected with the singlechip and comprises a wireless radio frequency transmitter; a digital information processor; the interface module is connected with a three-axis acceleration sensor and a temperature sensor; the transformer monitoring unit is also connected with a power supply and is placed in a sealed shell to form a vibration acceleration sensor, and the vibration acceleration sensor is arranged on the surface of a transformer oil tank; the sound transmitting unit is used for transmitting sound information generated by the vibration of the transformer to the data receiving unit and comprises an encoding unit and a transmitting unit.
Preferably: the data receiving device comprises a radio frequency receiving antenna which is matched with a wireless radio frequency transmitter for use; and a sound data receiving device; the audio data receiving apparatus includes a receiving unit configured to receive a multichannel audio data sequence including a first data sequence corresponding to a first channel and a second data sequence corresponding to a second channel, the first data sequence being multiplexed with the second data sequence delayed by a predetermined delay amount; a separation unit that separates the received audio data sequence for each channel; a decoding unit that decodes the received audio data sequence separated for each channel; the computer device is capable of calculating a correlation between a decoding result of the first data sequence and a decoding result of the second data sequence.
Preferably: the decoding means includes comparing means for comparing the calculated correlation with a prescribed threshold; a compensation unit configured to compensate for a loss or an error in one of a first data sequence and a second data sequence when the audio data is decoded when the loss or the error occurs in the audio data sequence; offset amount calculating means for calculating an offset amount of the sound sample that maximizes the correlation; the compensation means determines whether or not to perform the compensation based on a comparison result of the comparison means, and performs the compensation based on the calculated offset amount when the compensation is determined.
Preferably: the sound sending unit is arranged on the transformer through a vibration transmission structure, and the vibration transmission structure comprises a vibration plate and is arranged opposite to the transformer; a plurality of spacers for connecting the vibration plate to the transformer; an elastic body provided on the periphery of the vibration plate; the sound transmitting unit is arranged on the elastic body and used for transmitting sound output generated by vibration of the vibrating plate to the data receiving unit.
Preferably: the vibration acceleration sensor is arranged on a test point of the transformer oil tank through a connecting structure, and the connecting structure comprises a connecting piece which is made of the same material as the outer wall of the transformer oil tank and is integrally formed with the transformer oil tank; an adhesive layer; a metal mounting member for mounting the vibration acceleration sensor; the connecting piece and the metal mounting piece are mixed and connected into a whole through an adhesive layer and a bolt; the connecting piece, the adhesive layer and the metal mounting piece are respectively provided with a bolt hole, the connecting piece and the metal mounting piece respectively comprise a connecting part and a fixing part, and each connecting part comprises an adhesive surface; the connecting pieces are arranged into two pieces and are respectively connected with two ends of the metal mounting piece.
Preferably: the trapezoidal teeth are arranged on the surfaces of the glue joints; trapezoidal teeth on the adhesive surfaces of the connecting member and the metal mounting member are engaged with each other, and an adhesive is applied to the adhesive surfaces of the engaging connecting member and the metal mounting member to form an adhesive layer.
Preferably: the vibration acceleration sensor is arranged on the metal mounting part through a horizontal calibration mechanism, and the horizontal calibration mechanism comprises a support frame which is fixed on the metal mounting part and is integrally formed with the metal mounting part; the fixed disc is arranged on the support frame, and the vibration acceleration sensor is horizontally and fixedly arranged on the fixed disc; the measuring mechanism is used for measuring the inclination angle of the fixed disc; the electric push rod is arranged on the support frame; the electric push rods are arranged in two and are respectively connected with the two sides of the bottom of the fixed disk so as to adjust the inclined position of the fixed disk.
Preferably: the measuring mechanism comprises a shell, wherein an adjusting cavity is formed in the inner wall of the middle of the shell; the positioning plate is positioned in the adjusting cavity, and the middle part of the positioning plate is provided with a spherical groove; the universal ball is embedded in the spherical groove; the heavy hammer is connected with the universal ball through the traction rod; the steering rod is vertically arranged at the upper end of the universal ball and is fixedly connected with the universal ball; the tension springs are arranged in a plurality of pieces and are uniformly arranged around the steering rod; the pressure testing mechanism is arranged on the shell and is connected with one end, far away from the steering rod, of the tension spring; the pressure testing mechanism is used for feeding back the detected pressure to the computer equipment, a rotating cavity is formed in the shell, a horn mouth is formed in the bottom of the shell, and the horn mouth is communicated with the rotating cavity.
Preferably: the pressure testing mechanism comprises a pressure testing box which is fixed on the shell; the pressure sensor is arranged in the pressure test box and is connected with the computer equipment; the pull rod is L-shaped and arranged at the upper end of the pressure sensor, and one end of the pull rod is connected with the tension spring; and the pressure spring is connected with the pull rod and the pressure sensor.
Preferably: a threaded column is mounted on the side wall of the shell, a through hole is formed in the middle of the threaded column, and internal threads are formed in the through hole; the screw rod is arranged in the through hole of the screw rod in a penetrating way and is in threaded connection with the threaded column; one end of the screw rod is abutted to the positioning plate.
The invention has the beneficial effects that: through the dual information monitoring of vibration information and sound information, can ensure the stability to transformer vibration information monitoring, the degree of accuracy is high, and can in time learn the trouble of monitoring the route, and it is convenient, stable to use.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a system flow diagram of an embodiment of the present invention;
FIG. 2 is a test point distribution diagram according to an embodiment of the present invention;
FIG. 3 is a schematic view of the installation of the sound transmitting unit in accordance with the preferred embodiment of the present invention;
FIG. 4 is a schematic view of a vibration acceleration sensor according to an embodiment of the present invention;
FIG. 5 is an enlarged schematic view at A in FIG. 4;
FIG. 6 is a schematic diagram of a horizontal alignment mechanism according to an embodiment of the present invention;
FIG. 7 is a schematic view of the pressure test cell assembly according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of a pressure testing cassette according to an embodiment of the present invention;
the examples in the figure are: 100 vibration test points, 200 sound test points, 300 transformer oil tanks, 1 vibration plate, 2 spacers, 3 sound sending units, 4 connecting pieces, 5 metal installation parts, 6 adhesive layers, 7 bolts, 8 trapezoidal teeth, 9 supporting frames, 10 fixing discs, 11 electric push rods, 12 shells, 13 adjusting cavities, 14 positioning plates, 15 spherical grooves, 16 universal balls, 17 heavy hammers, 18 traction rods, 19 steering rods, 20 tension springs, 21 rotating cavities, 22 horn mouths, 23 pressure test boxes, 24 pressure sensors, 25 pull rods, 26 compression springs, 27 threaded columns and 28 screw rods.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
As shown in fig. 1, the present invention discloses a transformer voiceprint vibration detection system based on an internet of things architecture, in a specific embodiment of the present invention, the system includes a transformer monitoring unit, which is arranged on a transformer; the data receiving device is used for receiving the vibration test data and the temperature data of the transformer monitoring unit and transmitting the vibration test data and the temperature data to the computer equipment; the computer equipment is connected with the data receiving device; the method is characterized in that: the transformer monitoring unit is used for acquiring vibration signals, transformer temperature and audio signals at each monitored position on the surface of the transformer; it comprises a singlechip; the data transmitting device is connected with the singlechip and comprises a wireless radio frequency transmitter; a digital information processor; the interface module is connected with a three-axis acceleration sensor and a temperature sensor; the transformer monitoring unit is also connected with a power supply and is placed in a sealed shell to form a vibration acceleration sensor, the vibration acceleration sensor can measure the vibration amplitude range from-2 g to 3g, and the test range is 100 m; the vibration acceleration sensor is arranged on the surface of the transformer oil tank; the sound transmitting unit is used for transmitting sound information generated by the vibration of the transformer to the data receiving unit and comprises an encoding unit and a transmitting unit.
When the test point is used, firstly, the fixed position of the vibration acceleration sensor needs to be determined, namely, a plurality of test points are selected on the transformer oil tank 300, the most suitable test position is selected, the vibration characteristics of the tank body can be reflected most, the vibration attenuation of the winding and the iron core can be avoided to the maximum extent, the vibration acceleration sensor and the sound sending unit are installed on each test point, or the mode of cross arrangement can be selected, namely, one test point of the vibration acceleration sensor is installed, the sound sending unit is installed on the adjacent test point, the test points are divided into the vibration test point 100 and the sound test point 200, and the vibration of the transformer can be monitored comprehensively.
In this embodiment, the data receiving device includes a radio frequency receiving antenna, which is used in cooperation with a wireless radio frequency transmitter; and a sound data receiving device; the audio data receiving apparatus includes a receiving unit configured to receive a multichannel audio data sequence including a first data sequence corresponding to a first channel and a second data sequence corresponding to a second channel, the first data sequence being multiplexed with the second data sequence delayed by a predetermined delay amount; a separation unit that separates the received audio data sequence for each channel; a decoding unit that decodes the received audio data sequence separated for each channel; the computer device is capable of calculating a correlation between a decoding result of the first data sequence and a decoding result of the second data sequence.
In this embodiment, the decoding means includes comparing means for comparing the calculated correlation degree with a prescribed threshold; a compensation unit configured to compensate for a loss or an error in one of a first data sequence and a second data sequence when the audio data is decoded when the loss or the error occurs in the audio data sequence; offset amount calculating means for calculating an offset amount of the sound sample that maximizes the correlation; the compensation means determines whether or not to perform the compensation based on a comparison result of the comparison means, and performs the compensation based on the calculated offset amount when the compensation is determined.
A multichannel audio data sequence including a first data sequence corresponding to a first channel (received audio information at two adjacent monitoring points can be grouped into one audio group, the first channel and the second channel can be complemented) and a second data sequence corresponding to the second channel, the first data sequence being multiplexed in a state delayed by a predetermined delay amount from the second data sequence, the first data sequence being transmitted from an audio transmitting unit via an audio data receiving apparatus; separating the received sound data sequence for each channel; and decoding the separated sound data sequence for each channel, the decoding step including: calculating a correlation between a decoding result of the first data sequence and a decoding result of the second data sequence; comparing the calculated correlation with a predetermined threshold; for compensating for a loss or error in the sound data sequence using one of the first data sequence and the second data sequence when the sound data sequence is decoded, in the case where the loss or error occurs in the sound data sequence; and an offset calculation step of calculating an offset of the sound sample which maximizes the correlation, determining whether to perform the compensation according to a comparison result of the comparison step in the compensation step, and performing the compensation based on the calculated offset when determining to perform the compensation, thereby stably complementing the two sound data in the sound group, improving the stability of sound data transmission, avoiding the sound data abnormality of a single detection point caused by the influence of an external environment, avoiding a local abnormal condition of sound collection, and ensuring the stability of a sound monitoring path; the sound data of the two detection points, namely, each sound group forms independent sound data and is transmitted to the computer equipment, the computer equipment forms a sound data range when the transformer works stably and normally before monitoring, if necessary, a report form can be formed, the data of each sound group is compared with the sound data range under stable working, when the sound data range exceeds the range, the transformer has the phenomenon of unstable working, the monitoring point is determined, the data of running voltage, load current, transmission power, winding temperature, transformer oil temperature and the like of the transformer are collected, and the fault reason is judged; then comparing whether the vibration monitoring part and the sound monitoring part have the same fault or not, carrying out maintenance when the vibration monitoring part and the sound monitoring part judge that the vibration monitoring part and the sound monitoring part have the same fault, and acquiring data again until the vibration monitoring part and the sound monitoring part judge that the fault is the same or no fault exists when the vibration monitoring part and the sound monitoring part are different; in addition, when the two acquisition judgments are different all the time, a maintenance worker is dispatched to detect the vibration acceleration sensor and the sound sending unit which are information acquisition parts of the two, and whether the installation fault exists is judged.
In the embodiment, the sound sending unit is arranged to be mounted on a transformer through a vibration transmission structure, and the vibration transmission structure comprises a vibration plate 1 arranged opposite to the transformer; a plurality of spacers 2 for vibrating the plate to be connected to the transformer; an elastic body provided on the periphery of the diaphragm 1; the sound sending unit is arranged on the elastic body, and the sound sending unit 3 is used for sending sound output generated by the vibration of the vibration plate 1 to the data receiving unit; in addition, the vibration plate can be modeled in three positions in computer equipment, vibration information of the vibration plate is collected by adopting vibration sensing equipment, and the vibration condition of the transformer oil tank can be intuitively known through vibration of the vibration plate.
When the transformer vibration is monitored, two monitoring paths are adopted for monitoring; wherein the vibration monitoring path is: the vibration acceleration sensor collects vibration information of a transformer oil tank, converts the vibration information into data information and transmits the data information to computer equipment, a corresponding data fluctuation range is stored in the computer equipment before monitoring, the collected data is compared with the stored data in a form of forming a report, so that whether the work of the transformer is stable or not is judged, and data such as operating voltage, load current, transmission power, winding temperature and transformer oil temperature of the transformer during information collection are recorded, so that a fault position is judged; the sound monitoring path is as follows: when the transformer oil tank vibrates, the vibration is transmitted to the partition which is integrally formed with the transformer oil tank, the vibration is transmitted to the elastic plate through the partition, and then the vibration is transmitted to the vibration plate, the elastic plate can keep the vibration plate in a flexible mode, along with the transmission of the vibration to the vibration plate, the vibration plate sends out sound, the sound sending unit collects the sound and transmits the sound information to the sound data receiving device, then the computer equipment processes and reports the sound data information, and whether the work of the transformer is stable or not is judged according to the comparison of the fluctuation range of the sound data and the normal shifting range of the transformer; through the dual information monitoring of vibration information and sound information, can ensure the stability to transformer vibration information monitoring, the degree of accuracy is high, and can in time learn the trouble of monitoring the route, and it is convenient, stable to use.
In this embodiment, the vibration acceleration sensor is mounted on a test point of the transformer oil tank through a connection structure, and the connection structure includes a connection piece 4, which is made of the same material as the outer wall of the transformer oil tank and is integrally formed with the transformer oil tank; an adhesive layer 6; a metal mounting member 5 for mounting a vibration acceleration sensor; the connecting piece and the metal mounting piece are mixed and connected into a whole through an adhesive layer and a bolt 7; the connecting piece, the adhesive layer and the metal mounting piece are respectively provided with a bolt hole, the connecting piece and the metal mounting piece respectively comprise a connecting part and a fixing part, and each connecting part comprises an adhesive surface; the connecting pieces are arranged into two pieces and are respectively connected with two ends of the metal mounting piece.
In this embodiment, the adhesive tape further comprises trapezoidal teeth 8 arranged on each adhesive surface; trapezoidal teeth on the adhesive surfaces of the connecting member and the metal mounting member are engaged with each other, and an adhesive is applied to the adhesive surfaces of the engaging connecting member and the metal mounting member to form an adhesive layer.
The metal mounting part is made of metal which is the same as the material of the transformer oil tank, so that stable transmission of vibration is guaranteed, and monitoring of the transformer is prevented from being seriously influenced by loss of the vibration in the transmission process; when the transformer vibrates, the same vibration is transmitted to the connecting piece integrally formed with the transformer, then is transmitted to the metal mounting piece through the adhesive layer, and then vibration information is collected by the vibration acceleration sensor, the thickness of the adhesive layer is reduced as much as possible on the premise of keeping the connection stability, so that the influence on the transmission of the vibration is avoided, and the bonding in a dispensing mode can be avoided; through the setting in dovetail groove, reduce the shearing force between metal installed part and the connecting piece, hungry stress obtains alleviating between the connecting piece, guarantees vibration acceleration sensor's installation stability, reduces the loss of vibration transmission, guarantees efficiency and the stability of data analysis transmission.
Example 2
Because the vibration acceleration sensor is fixed on the surface of the transformer oil tank, the vibration acceleration sensor can generate certain deviation and even fall off due to the vibration of the transformer, and the monitoring on the vibration of the transformer is influenced.
As shown in fig. 2, the present embodiment is different from the above embodiments in that: in the embodiment, the vibration acceleration sensor is mounted on the metal mounting part through a horizontal calibration mechanism, and the horizontal calibration mechanism comprises a support frame 9 which is fixed on the metal mounting part 5 and is integrally formed with the metal mounting part; the fixed disc 10 is arranged on the support frame, and the vibration acceleration sensor is horizontally and fixedly arranged on the fixed disc; the measuring mechanism is used for measuring the inclination angle of the fixed disc; the electric push rod is arranged on the support frame; the electric push rods are arranged in two and are respectively connected with the two sides of the bottom of the fixed disk so as to adjust the inclined position of the fixed disk.
In this embodiment, the measuring mechanism includes a housing 12, wherein an adjusting cavity 13 is formed on an inner wall of a middle portion of the housing; the positioning plate 14 is positioned in the adjusting cavity, and the middle part of the positioning plate is provided with a spherical groove 15; the universal ball 16 is embedded in the spherical groove; a weight 17 connected with the universal ball through a traction rod 18; the steering rod 19 is vertically arranged at the upper end of the universal ball and is fixedly connected with the universal ball; the tension springs 20 are arranged in a plurality of pieces and are uniformly arranged around the steering rod; the pressure testing mechanism is arranged on the shell and is connected with one end, far away from the steering rod, of the tension spring; the pressure testing mechanism is used for feeding back the detected pressure to the computer equipment, a rotating cavity 21 is formed in the shell, a horn mouth 22 is formed in the bottom of the shell, and the horn mouth is communicated with the rotating cavity.
In this embodiment, the pressure testing mechanism includes a pressure testing box 23 fixed on the housing; the pressure sensor 24 is arranged in the pressure test box and is connected with the computer equipment; the pull rod 25 is L-shaped, is arranged at the upper end of the pressure sensor, and one end of the pull rod is connected with the tension spring; and the pressure spring 26 is connected with the pull rod and the pressure sensor.
In this embodiment, a threaded column 27 is mounted on the side wall of the housing, a through hole is formed in the middle of the threaded column, and an internal thread is formed in the through hole; the screw 28 is arranged in the through hole of the screw in a penetrating way and is in threaded connection with the threaded column; one end of the screw rod is abutted to the positioning plate.
When the pressure sensors in the shell detect the same pressure value, the traction rod is in the vertical position, and the vibration acceleration sensor connected with the fixed disc is in the horizontal state; when pressure sensors in the shell detect that pressure values in the pressure test boxes are different, the traction rod is in a non-vertical position, the fixed disc and the vibration acceleration sensor are inclined, the shell and the positioning plate which are connected with the fixed disc and the vibration acceleration sensor are in an inclined state, the steering rod and the traction rod tend to be in a vertical position under the traction of a heavy hammer, the steering rod pulls the tension spring on one side and extrudes the tension spring on the other side, the pressure on each pressure sensor is not enough, whether the vibration sensor is installed in a horizontal state or not is detected, adjustment is carried out according to different numerical values of each pressure sensor, the electric push rod is controlled to adjust the inclination of the fixed disc, and when the detection numerical values of each pressure sensor are the same, adjustment is stopped; the installation condition of the vibration sensor is convenient and accurate to measure, manual correction is not needed, and the use is convenient.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The utility model provides a transformer vocal print vibration detecting system based on thing networking framework which characterized in that: comprises that
The transformer monitoring unit is arranged on the transformer;
the data receiving device is used for receiving various data of the transformer monitoring unit and transmitting the data to the computer equipment;
the computer equipment is connected with the data receiving device;
the method is characterized in that:
the transformer monitoring unit is used for acquiring vibration signals, transformer temperature and audio signals at each monitored position on the surface of the transformer; which comprises
A single chip microcomputer; and connected with a single-chip microcomputer
The data transmitting device comprises a wireless radio frequency transmitter;
a digital information processor;
the interface module is connected with a three-axis acceleration sensor and a temperature sensor;
the transformer monitoring unit is also connected with a power supply and is placed in a sealed shell to form a vibration acceleration sensor, and the vibration acceleration sensor is arranged on the surface of a transformer oil tank; also comprises
The sound sending unit is used for sending sound information generated by the vibration of the transformer to the data receiving unit and comprises an encoding unit and a sending unit.
2. The system according to claim 1, wherein the system comprises: the data receiving device comprises
The radio frequency receiving antenna is matched with the wireless radio frequency transmitter for use; and
a sound data receiving device;
the sound data receiving apparatus includes
A receiving unit configured to receive a multichannel audio data sequence including a first data sequence corresponding to a first channel and a second data sequence corresponding to a second channel, the first data sequence being multiplexed with the second data sequence delayed by a predetermined delay amount;
a separation unit that separates the received audio data sequence for each channel;
a decoding unit that decodes the received audio data sequence separated for each channel;
the computer device is capable of calculating a correlation between a decoding result of the first data sequence and a decoding result of the second data sequence.
3. The system according to claim 2, wherein the system comprises: the decoding means comprises
A comparison unit for comparing the calculated correlation degree with a predetermined threshold value;
a compensation unit configured to compensate for a loss or an error in one of a first data sequence and a second data sequence when the audio data is decoded when the loss or the error occurs in the audio data sequence;
offset amount calculating means for calculating an offset amount of the sound sample that maximizes the correlation;
the compensation means determines whether or not to perform the compensation based on a comparison result of the comparison means, and performs the compensation based on the calculated offset amount when the compensation is determined.
4. The system for detecting the voiceprint vibration of the transformer based on the Internet of things architecture according to any one of claims 1 to 3, wherein: the sound transmitting unit is arranged on the transformer through a vibration transmission structure, and the vibration transmission structure comprises
A vibration plate disposed opposite to the transformer;
a plurality of spacers for connecting the vibration plate to the transformer;
an elastic body provided on the periphery of the vibration plate;
the sound transmitting unit is arranged on the elastic body and used for transmitting sound output generated by vibration of the vibrating plate to the data receiving unit.
5. The system according to claim 4, wherein the system comprises: the vibration acceleration sensor is arranged on a test point of the transformer oil tank through a connecting structure, and the connecting structure comprises
The connecting piece is made of the same material as the outer wall of the transformer oil tank and is integrally formed with the transformer oil tank;
an adhesive layer;
a metal mounting member for mounting the vibration acceleration sensor;
the connecting piece and the metal mounting piece are mixed and connected into a whole through an adhesive layer and a bolt; the connecting piece, the adhesive layer and the metal mounting piece are respectively provided with a bolt hole, the connecting piece and the metal mounting piece respectively comprise a connecting part and a fixing part, and each connecting part comprises an adhesive surface; the connecting pieces are arranged into two pieces and are respectively connected with two ends of the metal mounting piece.
6. The system according to claim 5, wherein the system comprises: also comprises
Trapezoidal teeth arranged on the surfaces of the glue joints;
trapezoidal teeth on the adhesive surfaces of the connecting member and the metal mounting member are engaged with each other, and an adhesive is applied to the adhesive surfaces of the engaging connecting member and the metal mounting member to form an adhesive layer.
7. The system according to claim 5, wherein the system comprises: the vibration acceleration sensor is installed on the metal installation part through a horizontal calibration mechanism, and the horizontal calibration mechanism comprises
The support frame is fixed on the metal mounting piece and is integrally formed with the metal mounting piece;
the fixed disc is arranged on the support frame, and the vibration acceleration sensor is horizontally and fixedly arranged on the fixed disc;
the measuring mechanism is used for measuring the inclination angle of the fixed disc;
the electric push rod is arranged on the support frame;
the electric push rods are arranged in two and are respectively connected with the two sides of the bottom of the fixed disk so as to adjust the inclined position of the fixed disk.
8. The system according to claim 7, wherein the system comprises: the measuring mechanism comprises
The inner wall of the middle part of the shell is provided with an adjusting cavity;
the positioning plate is positioned in the adjusting cavity, and the middle part of the positioning plate is provided with a spherical groove;
the universal ball is embedded in the spherical groove;
the heavy hammer is connected with the universal ball through the traction rod;
the steering rod is vertically arranged at the upper end of the universal ball and is fixedly connected with the universal ball;
the tension springs are arranged in a plurality of pieces and are uniformly arranged around the steering rod;
the pressure testing mechanism is arranged on the shell and is connected with one end, far away from the steering rod, of the tension spring;
the pressure testing mechanism is used for feeding back the detected pressure to the computer equipment, a rotating cavity is formed in the shell, a horn mouth is formed in the bottom of the shell, and the horn mouth is communicated with the rotating cavity.
9. The system according to claim 8, wherein the system comprises: the pressure testing mechanism comprises
The pressure test box is fixed on the shell;
the pressure sensor is arranged in the pressure test box and is connected with the computer equipment;
the pull rod is L-shaped and arranged at the upper end of the pressure sensor, and one end of the pull rod is connected with the tension spring;
and the pressure spring is connected with the pull rod and the pressure sensor.
10. The system according to claim 9, wherein the system comprises: the side wall of the shell is provided with a
The middle part of the threaded column is provided with a through hole, and internal threads are arranged in the through hole;
the screw rod is arranged in the through hole of the screw rod in a penetrating way and is in threaded connection with the threaded column;
one end of the screw rod is abutted to the positioning plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111048729.2A CN113721167B (en) | 2021-09-08 | 2021-09-08 | Transformer voiceprint vibration detection system based on Internet of things architecture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111048729.2A CN113721167B (en) | 2021-09-08 | 2021-09-08 | Transformer voiceprint vibration detection system based on Internet of things architecture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113721167A true CN113721167A (en) | 2021-11-30 |
| CN113721167B CN113721167B (en) | 2022-05-27 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115962845A (en) * | 2023-03-16 | 2023-04-14 | 保定天威新域科技发展有限公司 | Broad-spectrum mechanical wave intelligent sensor |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4102195A (en) * | 1977-02-08 | 1978-07-25 | Westinghouse Electric Corp. | Hot spot temperature sensor |
| CN101203067A (en) * | 2007-12-10 | 2008-06-18 | 陈奚平 | Vibration transducer |
| CN102183697A (en) * | 2011-01-07 | 2011-09-14 | 深圳思量微系统有限公司 | System for monitoring noise and vibration of power transformer |
| CN102261948A (en) * | 2010-12-07 | 2011-11-30 | 鞍钢集团矿业公司 | System for monitoring and analyzing sound of operating state of transformer on line |
| CN103884415A (en) * | 2014-03-25 | 2014-06-25 | 国家电网公司 | Transformer vibration monitoring system based on wireless sensing technology and testing method |
| CN104154888A (en) * | 2014-07-25 | 2014-11-19 | 四川工程职业技术学院 | Precision testing platform for small-sized part |
| CN204597630U (en) * | 2015-03-12 | 2015-08-26 | 国网浙江海盐县供电公司 | Main transformer intelligent online monitoring system in distribution line |
| CN104949653A (en) * | 2015-07-03 | 2015-09-30 | 王振环 | Level detection device |
| CN110873604A (en) * | 2019-11-21 | 2020-03-10 | 上海欣影电力科技股份有限公司 | Transformer noise vibration on-line monitoring system |
-
2021
- 2021-09-08 CN CN202111048729.2A patent/CN113721167B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4102195A (en) * | 1977-02-08 | 1978-07-25 | Westinghouse Electric Corp. | Hot spot temperature sensor |
| CN101203067A (en) * | 2007-12-10 | 2008-06-18 | 陈奚平 | Vibration transducer |
| CN102261948A (en) * | 2010-12-07 | 2011-11-30 | 鞍钢集团矿业公司 | System for monitoring and analyzing sound of operating state of transformer on line |
| CN102183697A (en) * | 2011-01-07 | 2011-09-14 | 深圳思量微系统有限公司 | System for monitoring noise and vibration of power transformer |
| CN103884415A (en) * | 2014-03-25 | 2014-06-25 | 国家电网公司 | Transformer vibration monitoring system based on wireless sensing technology and testing method |
| CN104154888A (en) * | 2014-07-25 | 2014-11-19 | 四川工程职业技术学院 | Precision testing platform for small-sized part |
| CN204597630U (en) * | 2015-03-12 | 2015-08-26 | 国网浙江海盐县供电公司 | Main transformer intelligent online monitoring system in distribution line |
| CN104949653A (en) * | 2015-07-03 | 2015-09-30 | 王振环 | Level detection device |
| CN110873604A (en) * | 2019-11-21 | 2020-03-10 | 上海欣影电力科技股份有限公司 | Transformer noise vibration on-line monitoring system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115962845A (en) * | 2023-03-16 | 2023-04-14 | 保定天威新域科技发展有限公司 | Broad-spectrum mechanical wave intelligent sensor |
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| CN113721167B (en) | 2022-05-27 |
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