CN207832309U - Load ratio bridging switch vibration signal acquisition device and analysis system - Google Patents
Load ratio bridging switch vibration signal acquisition device and analysis system Download PDFInfo
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- CN207832309U CN207832309U CN201721929489.6U CN201721929489U CN207832309U CN 207832309 U CN207832309 U CN 207832309U CN 201721929489 U CN201721929489 U CN 201721929489U CN 207832309 U CN207832309 U CN 207832309U
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Abstract
The utility model is related to a kind of load ratio bridging switch vibration signal acquisition device and analysis systems.Load ratio bridging switch vibration signal acquisition device, including vibrating sensor, signal adapter and radio transmission apparatus, vibrating sensor, signal adapter and radio transmission apparatus are sequentially connected, and radio transmission apparatus wirelessly communicates connection signal analytical equipment；The vibration signal of vibrating sensor acquisition load ratio bridging switch is simultaneously transmitted to signal adapter, and signal adapter carries out analog-to-digital conversion to vibration signal and obtains digital signal, and by radio transmission apparatus by radio transmission of digital signals to signal analysis equipment.It by wireless transmission, is not limited by the communications cable, cable need not be laid by collection site again, facility is applicable in, is particularly suitable for being applicable under multi-point sampling requirement and severe application environment.
Description
Technical field
The utility model is related to power equipment monitoring technical fields, more particularly to a kind of load ratio bridging switch vibration signal
Harvester and analysis system.
Background technology
Load ratio bridging switch is mechanical breakdown as unique movable member in power transformer, major failure type,
Load ratio bridging switch and power transformer may be damaged, the normal safe operation of power equipment and electric system is influenced and is caused tight
Weight consequence.When load ratio bridging switch is there are when potential faults, and vibration signal is with normal condition caused by contact action
Vibration signal compared to will be different；Therefore, the vibration signal for acquiring load ratio bridging switch extracts the state being included in
Characteristic information contributes to the potential faults for finding power grid as early as possible with the operating status of analyzing and diagnosing load ratio bridging switch.
It is traditional it is main acquire vibration signal by the way of wiring, connect vibrating sensor and processor using cable,
The vibration signal that vibrating sensor acquires is transmitted to processor by cable.However, truer, higher precision having load to obtain
The vibration signal of tap switch, the parameter of sampled point and sampling when needing correspondingly to increase vibration measurement.If using wiring
Mode, multi-point sampling, multi-parameter vibration signal gatherer process in, scene needs the vibrating sensor laid and cable closeer
And it is more, the laying of cable is cumbersome and easily generates mistake, and acquisition is inconvenient.
Utility model content
Based on this, it is necessary to be directed to the problem of traditional vibration signals collecting inconvenience, provide one kind and vibration signal can be improved
Acquire the load ratio bridging switch vibration signal acquisition device and analysis system of convenience.
A kind of load ratio bridging switch vibration signal acquisition device, including vibrating sensor, signal adapter and wireless transmission
Equipment, the vibrating sensor, the signal adapter and the radio transmission apparatus are sequentially connected, and the wireless transmission is set
Standby wireless communication connection signal analytical equipment；
The vibration signal of the vibrating sensor acquisition load ratio bridging switch is simultaneously transmitted to the signal adapter, the letter
Number converter carries out analog-to-digital conversion to the vibration signal and obtains digital signal, and by the radio transmission apparatus by the number
Word signal is wirelessly transmitted to signal analysis equipment.
Above-mentioned load ratio bridging switch vibration signal acquisition device, by using vibrating sensor, signal adapter and wireless
Transmission device is sequentially connected, and the vibration signal that vibrating sensor acquires is converted to digital signal by signal adapter, wireless transmission
Equipment is by radio transmission of digital signals to signal analysis equipment；By wireless transmission, do not limited by the communications cable, it need not be again
Collection site lays cable, is applicable in facility, is particularly suitable for being applicable under multi-point sampling requirement and severe application environment.
A kind of load ratio bridging switch divided oscillation signal analysis system, including signal analysis equipment and above-mentioned load ratio bridging switch shake
Dynamic signal pickup assembly, the radio transmission apparatus wireless communication connect the signal analysis equipment.
Above-mentioned load ratio bridging switch divided oscillation signal analysis system, is shaken by signal analysis equipment and above-mentioned load ratio bridging switch
Dynamic signal pickup assembly wireless communication so that the acquisition transmission of vibration signal is not limited by the communications cable, need not be acquired again
Cable is laid at scene, easy-to-use, is particularly suitable for being applicable under multi-point sampling requirement and severe application environment.
Description of the drawings
Fig. 1 is the structure chart of load ratio bridging switch vibration signal acquisition device in an embodiment；
Fig. 2 is the structure chart of load ratio bridging switch vibration signal acquisition device in another embodiment；
Fig. 3 is the schematic diagram of load ratio bridging switch divided oscillation signal analysis system in an embodiment.
Specific implementation mode
With reference to figure 1, in one embodiment, a kind of load ratio bridging switch vibration signal acquisition device is provided, including vibration passes
Sensor 110, signal adapter 120 and radio transmission apparatus 130, vibrating sensor 110, signal adapter 120 and wireless transmission
Equipment 130 is sequentially connected, and radio transmission apparatus 130 wirelessly communicates connection signal analytical equipment.
Vibrating sensor 110 acquires the vibration signal of load ratio bridging switch and is transmitted to signal adapter 120, signal conversion
Device 120 carries out analog-to-digital conversion to vibration signal and obtains digital signal, and is wirelessly passed digital signal by radio transmission apparatus 130
Transport to signal analysis equipment.
Specifically, vibrating sensor 110 is fixed inside load ratio bridging switch to incude shaking for load ratio bridging switch
It is dynamic, the physical quantity of vibration is converted to the vibration signal of electrical signal form, for example, it may be entire load ratio bridging switch is vibrated
Signal pickup assembly is fixed inside load ratio bridging switch；Signal analysis equipment is arranged outside load ratio bridging switch.It shakes
The signal type of dynamic signal is analog signal, and vibration signal is converted to digital signal by signal adapter 120, convenient for wireless
Transmission device 130 is wirelessly transferred.
Above-mentioned load ratio bridging switch vibration signal acquisition device, by using vibrating sensor 110, signal adapter 120
It is sequentially connected with radio transmission apparatus 130, the vibration signal that vibrating sensor 110 acquires is converted to number by signal adapter 120
Word signal, radio transmission apparatus 130 is by radio transmission of digital signals to signal analysis equipment；By wireless transmission, do not communicated
The limitation of cable need not lay cable by collection site again, be applicable in facility, be particularly suitable in multi-point sampling requirement and badly answering
With being applicable under environment.
In one embodiment, vibrating sensor 110 is piezoelectric acceleration transducer.Piezoelectric acceleration transducer spirit
Sensitivity is high, and collection effect is good.Specifically, in the present embodiment, the LC0151T model piezoelectric types of built-in micro-amplifier may be used
Acceleration transducer.
In one embodiment, with reference to figure 2, signal adapter 120 includes signal adjustment circuit 121 and analog-digital converter
122, signal adjustment circuit 121 connects vibrating sensor 110 and analog-digital converter 122, the connection wireless transmission of analog-digital converter 122
Equipment 130.
After the vibration signal that signal adjustment circuit 121 exports vibrating sensor 110 pre-processes after output pretreatment
Signal to analog-digital converter 122, analog-digital converter 122 carries out analog-to-digital conversion to pretreated signal and obtains digital signal.
Wherein, pretreatment may include the processing such as filtering, amplification, pressure regulation.It shakes by using the connection of signal adjustment circuit 121
Dynamic sensor 110 and analog-digital converter 122, first pre-process vibration signal before analog-to-digital conversion, improve vibration signal.
In one embodiment, with continued reference to Fig. 2, signal adjustment circuit 121 includes PGA (programmable gain amplifier)
1211 and differential voltage adjustment circuit 1212, the connection vibrating sensors 110 of PGA 1211 and differential voltage adjustment circuit 1212, it is poor
Component voltage adjustment circuit 1212 connects analog-digital converter 122.
The vibration signal that PGA 1211 exports vibrating sensor 110 is filtered enhanced processing, and exports filter and amplification
Signal afterwards to differential voltage adjustment circuit 1212, differential voltage adjustment circuit 1212 carries out voltage to the signal after filter and amplification
Adjustment, and the signal after differential output voltage adjustment is to analog-digital converter 122.Wherein, difference output is by the letter of single ended input
Number be converted to the signal of both-end difference output.
Since the reference voltage of 1211 output signals of PGA is generally 0V (volt), and rear class analog-digital converter 122 inputs
The range of signal voltage amplitude is generally 0-5V, therefore need to be by adjusting reference voltage.Specifically, differential voltage adjustment can be set
The reference voltage of circuit 1212 is 2.5V, makes output to the signal of analog-digital converter 122 in applied signal voltage amplitude range
Fluctuation up and down.Since ARM (processor) programming Control can be used in PGA 1211, by using PGA 1211, can reduce button with
The use of switch.
PGA 1211 can be made of electronic switch chip, operational amplifier and capacitance resistance ware, cross control electronic switch core
The closure of piece disconnects the control realized to op-amp gain.Specifically, for meet actual motion operating voltage, input
TLE2072 cores may be used in the requirements such as signal voltage range, gain bandwidth product, conversion rate, common-mode rejection ratio, operational amplifier
Piece.
Specifically, differential voltage adjustment circuit 1212 may include voltage-regulating circuit and difference channel, voltage adjustment electricity
Road connects PGA 1211 and difference channel, for carrying out voltage adjustment；Difference channel connects analog-digital converter 122, is used for difference
Output.
In one embodiment, with continued reference to Fig. 2, signal adjustment circuit 121 further includes sensor interface circuitry 1213,
PGA 1211 connects vibrating sensor 110 by sensor interface circuitry 1213.
Sensor interface circuitry 1213 is for connecting a plurality of types of vibrating sensors.By the way that sensor interface circuitry is arranged
1213, it can be achieved that different type vibrating sensor access, adapt to different vibration signals collecting occasions.
In one embodiment, analog-digital converter 122 is A/D conversion chips.The device one of traditional acquisition vibration signal
As be the A/D conversion functions for directly using processor, be accomplished that 10,12 A/D conversion, sampling resolution is relatively low, adopts
Sample error is larger, increases the difficulty of follow-up signal processing.By using independent A/D conversion chips, it can reach high-precision and believe
Number sampling purpose.
Specifically, in the present embodiment, using the A/D conversion chips of AK5385B models, there is higher sampling precision and divide
Resolution realizes the high precision collecting of vibration signal.
In one embodiment, radio transmission apparatus 130 includes processor 131 and wireless transport module 132, processor
131 connection signal converters 120 and wireless transport module 132, wireless transport module 132 wirelessly communicate connection signal analysis and set
It is standby.Processor 131 controls the wireless transmission of wireless transport module 132, easy-to-use.
Specifically, processor 131 may be provided with URAT (Universal Asynchronous Receiver/
Transmitter universal asynchronous receiving-transmitting transmitters) serial ports, it can be achieved that external function extension.
Wherein, WIFI module may be used in wireless transport module 132.WIFI module connection response is fast, performance stabilization, low work(
It consumes, is small, light-weight, so as to reduce the volume of load ratio bridging switch vibration signal acquisition device, improving collecting efficiency.
In one embodiment, processor 131 includes carrying SDIO (Secure Digital Input and Output
Secure digital input and output) interface ARM chips, wireless transport module 132 is SDIO-WIFI modules, and ARM chips pass through SDIO
Interface connects SDIO-WIFI modules.
SDIO-WIFI modules are a kind of embedded modules for meeting WIFI wireless network standards based on SDIO interfaces, are passed
Defeated rate is high, cheap.SDIO-WIFI modules are connected by SDIO interfaces by using ARM chips, vibration signal can be improved
Collecting efficiency, and reduce cost.In the present embodiment, ARM chips can be selected based on Cortex-M3 kernels
The chip of STM32F103VCT6 models.
In one embodiment, a kind of load ratio bridging switch divided oscillation signal analysis system, including signal analysis equipment are provided
With above-mentioned load ratio bridging switch vibration signal acquisition device, radio transmission apparatus 130 wirelessly communicates connection signal analytical equipment.
After signal analysis equipment receives the digital signal that radio transmission apparatus 130 is wirelessly transferred, digital signal can be carried out
Feature extraction obtains running state information, so that staff is according to the operation shape of running state information analysis load ratio bridging switch
State.Specifically, signal analysis equipment can also be shown and stored to digital signal and/or running state information.
Above-mentioned load ratio bridging switch divided oscillation signal analysis system, is shaken by signal analysis equipment and above-mentioned load ratio bridging switch
Dynamic signal pickup assembly wireless communication so that the acquisition transmission of vibration signal is not limited by the communications cable, need not be acquired again
Cable is laid at scene, easy-to-use, is particularly suitable for being applicable under multi-point sampling requirement and severe application environment.
Specifically, as shown in figure 3, signal analysis equipment can be computer.
Each technical characteristic of embodiment described above can be combined arbitrarily, to keep description succinct, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, it is all considered to be the range of this specification record.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But therefore it can not be interpreted as the limitation to utility model patent range.It should be pointed out that for the common skill of this field
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The scope of protection of the utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (9)
1. a kind of load ratio bridging switch vibration signal acquisition device, which is characterized in that including vibrating sensor, signal adapter and
Radio transmission apparatus, the vibrating sensor, the signal adapter and the radio transmission apparatus are sequentially connected, and the nothing
Line transmission device wirelessly communicates connection signal analytical equipment；
The vibration signal of the vibrating sensor acquisition load ratio bridging switch is simultaneously transmitted to the signal adapter, and the signal turns
Parallel operation carries out analog-to-digital conversion to the vibration signal and obtains digital signal, and is believed the number by the radio transmission apparatus
Number it is wirelessly transmitted to signal analysis equipment.
2. load ratio bridging switch vibration signal acquisition device according to claim 1, which is characterized in that the vibrating sensing
Device is piezoelectric acceleration transducer.
3. load ratio bridging switch vibration signal acquisition device according to claim 1, which is characterized in that the signal conversion
Device includes signal adjustment circuit and analog-digital converter, and the signal adjustment circuit connects the vibrating sensor and the modulus turns
Parallel operation, the analog-digital converter connect the radio transmission apparatus；
The vibration signal that the signal adjustment circuit exports the vibrating sensor exports pretreated after pre-processing
Signal to the analog-digital converter, the analog-digital converter carries out analog-to-digital conversion to pretreated signal and obtains the number letter
Number.
4. load ratio bridging switch vibration signal acquisition device according to claim 3, which is characterized in that the signal adjustment
Circuit includes PGA and differential voltage adjustment circuit, and the PGA connections vibrating sensor and differential voltage adjustment are electric
Road, the differential voltage adjustment circuit connect the analog-digital converter；
The vibration signal that the PGA exports the vibrating sensor is filtered enhanced processing, and after exporting filter and amplification
Signal to the differential voltage adjustment circuit, the differential voltage adjustment circuit carries out voltage tune to the signal after filter and amplification
It is whole, and the signal after differential output voltage adjustment is to the analog-digital converter.
5. load ratio bridging switch vibration signal acquisition device according to claim 4, which is characterized in that the signal adjustment
Circuit further includes sensor interface circuitry, and the PGA connects the vibrating sensor by the sensor interface circuitry.
6. load ratio bridging switch vibration signal acquisition device according to claim 3, which is characterized in that the analog-to-digital conversion
Device is A/D conversion chips.
7. load ratio bridging switch vibration signal acquisition device according to claim 1, which is characterized in that the wireless transmission
Equipment includes processor and wireless transport module, and the processor connects the signal adapter and the wireless transport module,
The wireless transport module wireless communication connects the signal analysis equipment.
8. load ratio bridging switch vibration signal acquisition device according to claim 7, which is characterized in that the processor packet
The ARM chips with SDIO interfaces are included, the wireless transport module is SDIO-WIFI modules, and the ARM chips pass through described
SDIO interfaces connect the SDIO-WIFI modules.
9. a kind of load ratio bridging switch divided oscillation signal analysis system, which is characterized in that including signal analysis equipment and claim
1-8 any one of them load ratio bridging switch vibration signal acquisition devices, the radio transmission apparatus wirelessly communicate described in connection
Signal analysis equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721929489.6U CN207832309U (en) | 2017-12-30 | 2017-12-30 | Load ratio bridging switch vibration signal acquisition device and analysis system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721929489.6U CN207832309U (en) | 2017-12-30 | 2017-12-30 | Load ratio bridging switch vibration signal acquisition device and analysis system |
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| Publication Number | Publication Date |
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| CN207832309U true CN207832309U (en) | 2018-09-07 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107966207A (en) * | 2017-12-30 | 2018-04-27 | 广州供电局有限公司 | Load ratio bridging switch vibration signal acquisition device and analysis system |
| CN109738056A (en) * | 2019-01-04 | 2019-05-10 | 红相股份有限公司 | A kind of load ratio bridging switch machine performance signal characteristic extracting methods |
| CN107966207B (en) * | 2017-12-30 | 2024-11-19 | 广东电网有限责任公司广州供电局 | Vibration signal acquisition device and analysis system of on-load tap-changer |
-
2017
- 2017-12-30 CN CN201721929489.6U patent/CN207832309U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107966207A (en) * | 2017-12-30 | 2018-04-27 | 广州供电局有限公司 | Load ratio bridging switch vibration signal acquisition device and analysis system |
| CN107966207B (en) * | 2017-12-30 | 2024-11-19 | 广东电网有限责任公司广州供电局 | Vibration signal acquisition device and analysis system of on-load tap-changer |
| CN109738056A (en) * | 2019-01-04 | 2019-05-10 | 红相股份有限公司 | A kind of load ratio bridging switch machine performance signal characteristic extracting methods |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200924 Address after: 510620 Tianhe District, Guangzhou, Tianhe South Road, No. two, No. 2, No. Patentee after: Guangzhou Power Supply Bureau of Guangdong Power Grid Co.,Ltd. Address before: 510620 Tianhe District, Guangzhou, Tianhe South Road, No. two, No. 2, No. Patentee before: GUANGZHOU POWER SUPPLY Co.,Ltd. |
|
| TR01 | Transfer of patent right |