CN116295811A - Power transmission line lower bridge state detection device based on self-energy-taking RFID sensor - Google Patents
Power transmission line lower bridge state detection device based on self-energy-taking RFID sensor Download PDFInfo
- Publication number
- CN116295811A CN116295811A CN202310558708.8A CN202310558708A CN116295811A CN 116295811 A CN116295811 A CN 116295811A CN 202310558708 A CN202310558708 A CN 202310558708A CN 116295811 A CN116295811 A CN 116295811A
- Authority
- CN
- China
- Prior art keywords
- diode
- energy
- corona
- rfid sensor
- capacitor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 39
- 238000001514 detection method Methods 0.000 title claims abstract description 15
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 18
- 238000012545 processing Methods 0.000 claims abstract description 4
- 239000003990 capacitor Substances 0.000 claims description 58
- 239000000523 sample Substances 0.000 claims description 20
- 238000004146 energy storage Methods 0.000 claims description 19
- 238000001914 filtration Methods 0.000 claims description 6
- 230000001133 acceleration Effects 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 2
- 229920000647 polyepoxide Polymers 0.000 claims description 2
- 239000000463 material Substances 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000005674 electromagnetic induction Effects 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000003306 harvesting Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 230000003862 health status Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
- G01P15/18—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration in two or more dimensions
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K17/00—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations
- G06K17/0022—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisious for transferring data to distant stations, e.g. from a sensing device
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/0701—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips at least one of the integrated circuit chips comprising an arrangement for power management
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/0701—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips at least one of the integrated circuit chips comprising an arrangement for power management
- G06K19/0715—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips at least one of the integrated circuit chips comprising an arrangement for power management the arrangement including means to regulate power transfer to the integrated circuit
Abstract
The invention provides a self-energy-taking RFID sensor-based bridge state detection device below a power transmission line, which comprises a corona energy acquisition device, a voltage stabilizing and rectifying device and an RFID sensor which are electrically connected in sequence; the corona energy acquisition device is used for capturing corona energy of the power transmission line and acquiring and processing positive and negative charges in the corona to obtain alternating power; the voltage stabilizing and rectifying device is used for converting alternating current into direct current and supplying power to the RFID sensor through the direct current; the RFID sensor is used for collecting vibration signals of the bridge and transmitting the vibration signals to the remote processing center in a wireless mode. The invention can solve the problems that the battery is required to be frequently replaced and the stability is poor when the existing active RFID is powered.
Description
Technical Field
The invention relates to the technical field of highway facility detection, in particular to a device for detecting the state of a bridge below a power transmission line based on a self-energy-taking RFID sensor.
Background
The bridge is one of the vital links in the modern transportation system, and the health status of the bridge plays a vital role in social production and life. The existing bridge state detection methods mainly depend on manual appearance inspection and regular field tests, and the methods belong to traditional detection and tests, are monitoring methods for post analysis, cannot identify potential faults in time, and cannot meet the development trend of current state maintenance. In addition, the bridge below the power transmission line is limited by the line safety distance, so that the use of part of conventional detection means is limited, and the difficulty in detecting the state of the bridge is further increased. The Radio Frequency Identification (RFID) technology is combined with bridge monitoring, so that the problem that real-time monitoring cannot be achieved is solved, and the maintenance cost of the whole monitoring system is reduced.
The RFID technology is a technology for realizing non-contact information transmission by using radio frequency signals through spatial coupling and achieving the identification purpose through the transmitted information, and is a specific application and development of an automatic identification technology in the aspect of radio technology. In general, RFID systems can be divided into two categories, active and passive. Because the battery is arranged in the active RFID tag, the active RFID tag can be always in an awake state relative to the passive RFID tag, and has high instantaneity and faster response rate. In the on-line monitoring of the power transformation equipment, the requirements on real-time performance and response speed are high, so that the active RFID tag meets the practical power grid application requirements, but when the existing active RFID is powered, the battery needs to be replaced frequently, and the stability is poor.
Disclosure of Invention
The invention aims to provide a self-energy-taking RFID sensor-based bridge state detection device below a power transmission line, which aims to solve the problems that a battery needs to be replaced frequently and the stability is poor when the existing active RFID is powered.
The utility model provides a bridge state detection device below transmission line based on self-energy-taking RFID sensor, includes corona energy collection device, steady voltage rectifier unit and RFID sensor that electric connection is in proper order;
the corona energy acquisition device is used for capturing corona energy of the power transmission line and acquiring and processing positive and negative charges in the corona to obtain alternating power;
the voltage stabilizing and rectifying device is used for converting alternating current into direct current and supplying power to the RFID sensor through the direct current;
the RFID sensor is used for collecting vibration signals of the bridge and transmitting the vibration signals to the remote processing center in a wireless mode;
the corona energy collection device comprises a probe and a collection device shell, the probe is arranged on the collection device shell, an energy collection circuit is arranged in the collection device shell and comprises a first diode, a second diode, a first capacitor, a coil and a load, the coil comprises a primary coil and a secondary coil, and the number of turns a of the primary coil and the number of turns b of the secondary coil meet the following conditions: a/b=n, wherein N is a positive integer greater than 1;
the positive electrode of the first diode, the positive electrode of the second diode, the first end of the first capacitor and the first end of the primary coil are respectively connected with the probe, and the negative electrode of the first diode, the negative electrode of the second diode and the second end of the first capacitor are respectively connected with the second end of the primary coil;
two ends of the auxiliary coil are respectively connected with two ends of the load;
the two ends of the voltage-stabilizing rectifying device are connected with the two ends of the load, and the voltage-stabilizing rectifying device at least comprises an energy storage capacitor;
the energy collection power P of the corona energy collection device meets the following conditional expression:
P=I s 2 ×t/C s ；
P＜P up ；
P up =I c ×（U HVdc -U con ）
wherein I is s The current value of the current collected for the probe, t is the energy collection period, C s For the capacity of the energy storage capacitor, P up The upper limit of the acquisition power is set; i c For corona current i c Effective value of i c = i cd +ε(st)×i cp ，i cd I is the steady-state DC component of the corona current cp Epsilon (st) is a corona discharge state function, which is the pulse component of the corona current; u (U) HVdc For the operating voltage of the bridge, U con Is the critical corona onset voltage of the artificial corona electrode.
According to the bridge state detection device below the power transmission line based on the self-energy-taking RFID sensor, which is provided by the invention, the principle of electromagnetic induction is adopted, and the corona energy of the line on the bridge is collected and converted to be used as the energy source of an active RFID label, so that the cost is reduced, the frequent replacement of batteries is avoided, the good stability is realized, and the defects of increased cost and difficult maintenance caused by wired transmission are avoided by adopting a mode of wireless data transmission; in addition, the device has low realization cost and small loss, is easy to replace and overhaul, and is suitable for large-scale application in bridges.
In addition, the power transmission line lower bridge state detection device based on the self-energy-taking RFID sensor has the following technical characteristics:
further, the voltage-stabilizing rectifying device also comprises a rectifier and a voltage-stabilizing boosting device;
the rectifier adopts full-wave bridge rectifier circuit, the rectifier includes filtering inductance to and the third diode, fourth diode, fifth diode, the sixth diode that head links to each other in proper order, filtering inductance's one end is connected fourth diode with between the fifth diode, filtering inductance's the other end is connected the third diode with between the sixth diode, the one end of load is connected the third diode with between the fourth diode, the other end of load is connected between the fifth diode with between the sixth diode.
Further, the voltage stabilizing and boosting device comprises an LTC3225 chip, a second capacitor and a third capacitor, wherein one end of the second capacitor is respectively connected with the V of the LTC3225 chip IN The pin is connected with the SHDN pin, the other end of the second capacitor is connected with the V of the LTC3225 chip SEL The two ends of the third capacitor are respectively connected with the C of the LTC3225 chip + Pin and C - The pin is connected with one end of the energy storage capacitor and the C of the LTC3225 chip OUT And the other end of the energy storage capacitor is connected with the CX pin and the GND pin of the LTC3225 chip respectively.
Further, the energy storage capacitor absorbs the energy power P s The following conditional expression is satisfied:
P s = C s ×C 3 ×P/（C s +C 3 ） 2
wherein C is 3 Is the capacitance value of the third capacitor.
Further, the third diode, the fourth diode, the fifth diode and the sixth diode are schottky diodes.
Furthermore, the energy storage capacitor adopts a super capacitor.
Further, the RFID sensor comprises a Monza X-8K RFID chip and an ADXL372 triaxial acceleration sensor, and an electronic cargo coding structure of the RFID sensor is composed of a protocol area, a control area, a coding area and an editable area.
Further, the material of probe is steel core aluminium hank material, collection system casing adopts the epoxy material.
Drawings
Fig. 1 is a schematic structural diagram of a device for detecting a bridge state under a power transmission line based on a self-energy-taking RFID sensor according to an embodiment;
FIG. 2 is a schematic circuit diagram of a corona energy harvesting device;
FIG. 3 is a schematic circuit diagram of a rectifier;
fig. 4 is a schematic circuit diagram of a voltage stabilizing and boosting device.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, a device for detecting a state of a bridge under a power transmission line based on a self-energy-taking RFID sensor includes a corona energy collection device 10, a voltage stabilizing and rectifying device 20 and an RFID sensor 30 electrically connected in sequence based on electromagnetic induction and an ultrahigh frequency electromagnetic wave transmission principle.
The corona energy collection device 10 is used for capturing corona energy of a power transmission line and collecting and processing positive and negative charges in the corona to obtain alternating power.
The voltage stabilizing rectifying device 20 is used for converting alternating current into direct current and supplying power to the RFID sensor 30 through the direct current.
The RFID sensor 30 is configured to collect vibration signals of the bridge and transmit the vibration signals to a remote processing center in a wireless manner.
Specifically, referring to fig. 2, the corona energy collecting device 10 includes a probe 11 and a collecting device housing, the probe 11 is disposed on the collecting device housing, the probe 11 is made of a steel core aluminum twisted material, and the collecting device housing is made of an epoxy resin material. When the transmission line runs, corona discharge exists between the transmission line and the ground, the probe 11 is used for capturing electromagnetic energy generated by corona, and the shell of the acquisition device is used for protecting the internal circuit structure from being influenced by the corona discharge.
The energy collection device is characterized in that an energy collection circuit 12 is arranged in the shell of the collection device, the energy collection circuit 12 comprises a first diode D1, a second diode D2, a first capacitor C1, a coil and a load R, the coil comprises a primary coil L1 and a secondary coil L2, and the number of turns a of the primary coil L1 and the number of turns b of the secondary coil L2 meet the following conditions: a/b=n, where N is a positive integer greater than 1, and in this embodiment, the value of N is 10. The first diode D1, the second diode D2, and the first capacitor C1 are used for collecting positive and negative charges captured by the probe 11 and forming a continuous current.
The corona energy collection device 10 adopts the principles of electromagnetic induction and ultrahigh frequency electromagnetic wave transmission, corona generated between the power transmission line and the ground is captured through a probe during normal operation, positive charge and negative charge current conduction is respectively realized through two diodes (a first diode D1 and a second diode D2) which are connected in parallel, and meanwhile, a coil with the turns ratio of N is used for reducing the voltage of a collected energy signal so as to meet the requirement of a subsequent circuit structure on the upper limit of voltage.
The positive electrode of the first diode D1, the positive electrode of the second diode D2, the first end of the first capacitor C1, and the first end of the primary coil L1 are respectively connected to the probe 11, and the negative electrode of the first diode D1, the negative electrode of the second diode D2, and the second end of the first capacitor C1 are respectively connected to the second end of the primary coil L1.
Both ends of the secondary coil L2 are respectively connected with both ends of the load R.
The two ends of the voltage stabilizing rectifying device 20 are connected with the two ends of the load R.
The voltage stabilizing rectifying device 20 comprises an energy storage capacitor C3, a rectifier 22 and a voltage stabilizing boosting device 23.
Referring to fig. 2 and 3, the rectifier 22 employs a full-wave bridge rectifier circuit, the rectifier 22 includes a filter inductor L, and a third diode D3, a fourth diode D4, a fifth diode D5, and a sixth diode D6 that are sequentially connected in an end-to-end manner, one end of the filter inductor L is connected between the fourth diode D4 and the fifth diode D5, the other end of the filter inductor L is connected between the third diode D3 and the sixth diode D6, one end of the load R is connected between the third diode D3 and the fourth diode D4, and the other end of the load R is connected between the fifth diode D5 and the sixth diode D6.
In this embodiment, the third diode D3, the fourth diode D4, the fifth diode D5, and the sixth diode D6 are schottky diodes.
Because the electric field around the transmission line is constant, the ion clouds with the same polarity generated by the transmission line move along the ground direction to form a space ion flow. When ions migrate to a point sufficiently close to the probe tip, the electromagnetic field generated by the power line weakens the confinement of the ion stream, where there is a continuous steady state corona current throughout the space. Through probe 11 and energy harvesting circuit 12, the transmission line corona discharge energy can be fully harvested.
Wherein, the energy collection power P of the corona energy collection device 10 satisfies the following condition:
P=I s 2 ×t/C s ；
P＜P up ；
P up =I c ×（U HVdc -U con ）
wherein I is s The current value of the current collected by the probe 11, t is the energy collection period, C s For the capacity of the energy storage capacitor C3, P up The upper limit of the acquisition power is set; i c For corona current i c Effective value of i c = i cd +ε(st)×i cp ，i cd I is the steady-state DC component of the corona current cp For the pulse component of the corona current, ε (st) is the corona dischargeA state function; u (U) HVdc For the operating voltage of the bridge, U con Is the critical corona onset voltage of the artificial corona electrode. Since power is linear with time, output power can be increased by storing energy for a long period of time.
Specifically, referring to fig. 4, the voltage stabilizing and boosting device 23 includes an LTC3225 chip 231, a second capacitor C21, and a third capacitor C31, wherein one end of the second capacitor C21 is respectively connected with the V of the LTC3225 chip 231 IN The pin is connected with the SHDN pin, the other end of the second capacitor C21 is connected with the V of the LTC3225 chip 231 SEL Pin-connected, two ends of the third capacitor C31 are respectively connected with C of the LTC3225 chip 231 + Pin and C - A pin is connected with one end of the energy storage capacitor C3 and C of the LTC3225 chip 231 OUT And the other end of the energy storage capacitor C3 is connected with the CX pin and the GND pin of the LTC3225 chip 231 respectively. The second capacitor C21 and the third capacitor C31 are used for chip input signal control, the energy storage capacitor C3 adopts a super capacitor and is used for energy storage, and the capacity is specifically 10F.
In the present embodiment, the capacity of the second capacitor C21 is 2.4
The capacity of the third capacitor C31 is 1 +.>
The energy collection power is increased by a small capacity capacitor (second capacitance C21) and the energy is stored by a large capacity capacitor (storage capacitance C3).
In a single ideal energy transfer process, the absorbed energy power P of the energy storage capacitor C3 s The following conditional expression is satisfied:
P s = C s ×C 3 ×P/（C s +C 3 ） 2
wherein C is 3 Is the capacitance value of the third capacitor C31.
The voltage stabilizing and rectifying device 20 is used for stabilizing and boosting the rectified electric energy to meet the working voltage requirement of the RFID sensor 30, a super capacitor is configured for storing energy so as to meet the uninterrupted working requirement of the RFID sensor 30, and the super capacitor is in a charging state for storing energy when the energy provided by the corona energy collecting device exceeds the working requirement of the RFID sensor; when the harvested energy is insufficient to meet the operational requirements of the RFID sensor 30, the super capacitor operates in a discharge mode to energize the RFID sensor 30.
In this embodiment, the RFID sensor 30 includes a Monza X-8K RFID chip and an ADXL372 triaxial acceleration sensor, and the electronic cargo coding structure of the RFID sensor 30 is composed of a protocol area, a control area, a coding area and an editable area, so that the editable area can be subjected to custom editing, and sensor acquisition data is embedded into the coding area, thereby realizing high efficiency and low power consumption of data transmission. In addition, by embedding the sensor acquisition data in the RFID address code, the running power consumption and the transmission time of the RFID sensor can be further reduced.
In summary, according to the above-mentioned power transmission line lower bridge state detection device based on the self-energy-taking RFID sensor, by adopting the principle of electromagnetic induction, the energy source of the active RFID tag is obtained by collecting and converting the corona energy of the line on the bridge, so that the cost is reduced, the frequent replacement of the battery is avoided, the stability is good, and the defects of increased cost and difficult maintenance caused by wired transmission are avoided by adopting a mode of wireless data transmission; in addition, the device has low realization cost and small loss, is easy to replace and overhaul, and is suitable for large-scale application in bridges.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (8)
1. The device for detecting the state of the bridge below the power transmission line based on the self-energy-taking RFID sensor is characterized by comprising a corona energy acquisition device, a voltage stabilizing and rectifying device and an RFID sensor which are electrically connected in sequence;
the corona energy acquisition device is used for capturing corona energy of the power transmission line and acquiring and processing positive and negative charges in the corona to obtain alternating power;
the voltage stabilizing and rectifying device is used for converting alternating current into direct current and supplying power to the RFID sensor through the direct current;
the RFID sensor is used for collecting vibration signals of the bridge and transmitting the vibration signals to the remote processing center in a wireless mode;
the corona energy collection device comprises a probe and a collection device shell, the probe is arranged on the collection device shell, an energy collection circuit is arranged in the collection device shell and comprises a first diode, a second diode, a first capacitor, a coil and a load, the coil comprises a primary coil and a secondary coil, and the number of turns a of the primary coil and the number of turns b of the secondary coil meet the following conditions: a/b=n, wherein N is a positive integer greater than 1;
the positive electrode of the first diode, the positive electrode of the second diode, the first end of the first capacitor and the first end of the primary coil are respectively connected with the probe, and the negative electrode of the first diode, the negative electrode of the second diode and the second end of the first capacitor are respectively connected with the second end of the primary coil;
two ends of the auxiliary coil are respectively connected with two ends of the load;
the two ends of the voltage-stabilizing rectifying device are connected with the two ends of the load, and the voltage-stabilizing rectifying device at least comprises an energy storage capacitor;
the energy collection power P of the corona energy collection device meets the following conditional expression:
P=I s 2 ×t/C s ；
P＜P up ；
P up =I c ×（U HVdc -U con ）
wherein I is s The current value of the current collected for the probe, t is the energy collection period, C s For the capacity of the energy storage capacitor, P up The upper limit of the acquisition power is set; i c For corona current i c Effective value of i c = i cd +ε(st)×i cp ，i cd I is the steady-state DC component of the corona current cp Epsilon (st) is a corona discharge state function, which is the pulse component of the corona current; u (U) HVdc For the operating voltage of the bridge, U con Is the critical corona onset voltage of the artificial corona electrode.
2. The self-energy-taking RFID sensor-based bridge state detection device under a power transmission line according to claim 1, wherein the voltage stabilizing rectifying device further comprises a rectifier and a voltage stabilizing boosting device;
the rectifier adopts full-wave bridge rectifier circuit, the rectifier includes filtering inductance to and the third diode, fourth diode, fifth diode, the sixth diode that head links to each other in proper order, filtering inductance's one end is connected fourth diode with between the fifth diode, filtering inductance's the other end is connected the third diode with between the sixth diode, the one end of load is connected the third diode with between the fourth diode, the other end of load is connected between the fifth diode with between the sixth diode.
3. The device for detecting the bridge state under the power transmission line based on the self-energy-taking RFID sensor according to claim 2, wherein the voltage stabilizing and boosting device comprises an LTC3225 chip, a second capacitor and a third capacitor, and one end of the second capacitor is respectively connected with the LTC3225 chipV of (2) IN The pin is connected with the SHDN pin, the other end of the second capacitor is connected with the V of the LTC3225 chip SEL The two ends of the third capacitor are respectively connected with the C of the LTC3225 chip + Pin and C - The pin is connected with one end of the energy storage capacitor and the C of the LTC3225 chip OUT And the other end of the energy storage capacitor is connected with the CX pin and the GND pin of the LTC3225 chip respectively.
4. The device for detecting the state of the bridge under the transmission line based on the self-energy-taking RFID sensor according to claim 3, wherein the energy-absorbing power P of the energy-storage capacitor s The following conditional expression is satisfied:
P s = C s ×C 3 ×P/（C s +C 3 ） 2
wherein C is 3 Is the capacitance value of the third capacitor.
5. The device for detecting the bridge state under the power transmission line based on the self-energy-taking RFID sensor according to claim 2, wherein the third diode, the fourth diode, the fifth diode and the sixth diode are all schottky diodes.
6. The self-energy-taking RFID sensor-based bridge state detection device under a power transmission line according to claim 1, wherein the energy storage capacitor is a super capacitor.
7. The power transmission line lower bridge state detection device based on the self-energy-taking RFID sensor according to claim 1, wherein the RFID sensor comprises a Monza X-8K RFID chip and an ADXL372 triaxial acceleration sensor, and an electronic cargo coding structure of the RFID sensor consists of a protocol area, a control area, a coding area and an editable area.
8. The device for detecting the state of the bridge below the power transmission line based on the self-energy-taking RFID sensor according to claim 1, wherein the probe is made of steel-cored aluminum, and the shell of the collecting device is made of epoxy resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310558708.8A CN116295811A (en) | 2023-05-18 | 2023-05-18 | Power transmission line lower bridge state detection device based on self-energy-taking RFID sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310558708.8A CN116295811A (en) | 2023-05-18 | 2023-05-18 | Power transmission line lower bridge state detection device based on self-energy-taking RFID sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116295811A true CN116295811A (en) | 2023-06-23 |
Family
ID=86799957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310558708.8A Pending CN116295811A (en) | 2023-05-18 | 2023-05-18 | Power transmission line lower bridge state detection device based on self-energy-taking RFID sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116295811A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101551282A (en) * | 2009-05-11 | 2009-10-07 | 长安大学 | Bridge load detecting system based on wireless sensor network |
| CN204758012U (en) * | 2015-04-15 | 2015-11-11 | 无锡市博尚光电科技有限公司 | Utilize bridge structures health monitoring wireless device of environment electromagnetic wave power supply |
| CN108337722A (en) * | 2018-02-28 | 2018-07-27 | 华东交通大学 | A kind of Rechargeable wireless sensor network nodes |
| CN112082597A (en) * | 2020-08-14 | 2020-12-15 | 北京机械设备研究所 | Bridge detection system |
| CN112993761A (en) * | 2021-02-08 | 2021-06-18 | 重庆理工大学 | High tension power line energy taking device on spot based on corona discharge principle |
| WO2022252408A1 (en) * | 2021-06-01 | 2022-12-08 | 国网重庆市电力公司电力科学研究院 | Multi-sensor data fusion-based self-powered transmission line online monitoring system |
| CN218631040U (en) * | 2022-11-07 | 2023-03-14 | 蚌埠鼎力电子科技有限公司 | Remote passive bridge monitoring system |
-
2023
- 2023-05-18 CN CN202310558708.8A patent/CN116295811A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101551282A (en) * | 2009-05-11 | 2009-10-07 | 长安大学 | Bridge load detecting system based on wireless sensor network |
| CN204758012U (en) * | 2015-04-15 | 2015-11-11 | 无锡市博尚光电科技有限公司 | Utilize bridge structures health monitoring wireless device of environment electromagnetic wave power supply |
| CN108337722A (en) * | 2018-02-28 | 2018-07-27 | 华东交通大学 | A kind of Rechargeable wireless sensor network nodes |
| CN112082597A (en) * | 2020-08-14 | 2020-12-15 | 北京机械设备研究所 | Bridge detection system |
| CN112993761A (en) * | 2021-02-08 | 2021-06-18 | 重庆理工大学 | High tension power line energy taking device on spot based on corona discharge principle |
| WO2022252408A1 (en) * | 2021-06-01 | 2022-12-08 | 国网重庆市电力公司电力科学研究院 | Multi-sensor data fusion-based self-powered transmission line online monitoring system |
| CN218631040U (en) * | 2022-11-07 | 2023-03-14 | 蚌埠鼎力电子科技有限公司 | Remote passive bridge monitoring system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104122478B (en) | Spark gap condition diagnosing system based on percussion action and Leakage Current on-line checking | |
| CN204349598U (en) | Electromagnetic wave energy reclaims and conversion equipment and system | |
| CN107394864A (en) | A kind of accumulator of electric car charging and discharging state monitoring system | |
| CN202150743U (en) | Coupling energy taking power supply system for high voltage transmission line fault monitoring | |
| CN208401611U (en) | A kind of self-power wireless switch and wireless device | |
| CN106160259A (en) | Micro Energy Lose power-supply system and method for work based on the sensing power taking of line load electric current | |
| CN102684322B (en) | Energy collecting and voltage stabilizing power supply circuit based on taking electricity by using high-voltage power wires | |
| CN106160182A (en) | A kind of be applicable to taking of overhead type indicating fault location terminal can circuit | |
| CN114944769A (en) | Current energy-taking device | |
| CN209264817U (en) | Passive and wireless current sensor based on double-winding current mutual inductor | |
| CN205679717U (en) | A kind of power network line short trouble testing circuit | |
| CN107749672A (en) | Collection system for energy conversion | |
| CN109270337A (en) | Passive and wireless current sensor based on double-winding current mutual inductor | |
| CN105806498A (en) | Wireless temperature measurement sensor based on voltage induction power acquisition | |
| CN116295811A (en) | Power transmission line lower bridge state detection device based on self-energy-taking RFID sensor | |
| CN209542700U (en) | Utilize the signal-powered stray current sensor of railway voltage | |
| CN111306023A (en) | Micro-motion energy collection device and method | |
| CN109660018A (en) | A kind of transmission line of electricity sensing electricity getting device based on Rogowski coil | |
| CN204008906U (en) | A kind of special change acquisition terminal with high tension loop monitoring | |
| CN111044778A (en) | Lightning arrester on-line monitor adopting leakage current for power supply | |
| CN206773741U (en) | A kind of self-powered BRT electronic tag for vehicles systems using vibrational energy | |
| CN115932430A (en) | Fault identification method for 10kV fixed external series gap lightning arrester | |
| CN204481696U (en) | A kind of power supply circuits of power collection systems | |
| CN208939669U (en) | A kind of ultra-high-tension power transmission line ground wire energy taking device | |
| CN103475074B (en) | Unloaded low-loss battery charger |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |