CN212206345U - Vibration signal acquisition device and high-voltage circuit breaker mechanical fault recognition equipment - Google Patents
Vibration signal acquisition device and high-voltage circuit breaker mechanical fault recognition equipment Download PDFInfo
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- CN212206345U CN212206345U CN202020408072.0U CN202020408072U CN212206345U CN 212206345 U CN212206345 U CN 212206345U CN 202020408072 U CN202020408072 U CN 202020408072U CN 212206345 U CN212206345 U CN 212206345U
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Abstract
The utility model provides a vibration signal acquisition device, which comprises an acceleration sensor, a signal processing unit and a data acquisition unit which are connected in sequence; the acceleration sensor is used for converting the vibration of the measured object into an original analog signal and outputting the original analog signal; the signal processing unit is used for carrying out amplification processing and filtering processing on the original analog signal to generate a processed analog signal and outputting the processed analog signal; the data acquisition unit is used for converting the processing analog signal into a processing digital signal and outputting the processing digital signal. This vibration signal collection system can once only gather multichannel vibration signal and convert into digital signal and export, can realize high voltage circuit breaker's vibration volume fast and acquire the function, has good practicality. Additionally, the utility model also provides a high voltage circuit breaker mechanical failure identification equipment.
Description
Technical Field
The utility model relates to detection area, concretely relates to high voltage circuit breaker mechanical failure diagnosis method.
Background
In order to intelligently identify the mechanical fault of the high-voltage circuit breaker, the moving physical information of the high-voltage circuit breaker is acquired, and then the moving physical information of the high-voltage circuit breaker is analyzed by a computer to derive a corresponding mechanical fault identification result.
At high voltage circuit breaker's motion physics information acquisition phase, do not have in the trade at present the special device that obtains to high voltage circuit breaker's vibration volume yet, this makes the staff when carrying out relevant operation, need through the corresponding device of self empirical design, and the operation is comparatively loaded down with trivial details, is unfavorable for going on fast of high voltage circuit breaker mechanical failure discernment.
SUMMERY OF THE UTILITY MODEL
Go on fast for high voltage circuit breaker mechanical failure discernment, the utility model provides a vibration signal collection system and high voltage circuit breaker mechanical failure identification equipment, this vibration signal collection system can once only gather multichannel vibration signal and convert to digital signal and export, can realize high voltage circuit breaker's vibration volume fast and acquire the function, have good practicality.
Correspondingly, the utility model provides a vibration signal acquisition device, which comprises an acceleration sensor, a signal processing unit and a data acquisition unit which are connected in sequence;
the acceleration sensor is used for converting the vibration of the measured object into an original analog signal and outputting the original analog signal;
the signal processing unit is used for carrying out amplification processing and filtering processing on the original analog signal to generate a processed analog signal and outputting the processed analog signal;
the data acquisition unit is used for converting the processing analog signal into a processing digital signal and outputting the processing digital signal.
In an optional embodiment, the number of the acceleration sensors is two or more, the number of the signal processing units corresponds to the number of the acceleration sensors, and the number of the data acquisition units corresponds to the number of the signal processing units.
In an alternative embodiment, the acceleration sensor is a piezoelectric acceleration sensor.
In an optional embodiment, the signal processing unit includes a signal gain amplifying circuit and a filter circuit;
the signal gain amplifying circuit is provided with a gain input end and a gain output end, and the filter circuit is provided with a filter input end and a filter output end;
the gain input end is connected with the output end of the acceleration sensor, the gain output end is connected with the filter input end, and the filter output end is connected with the input end of the data acquisition unit.
In an optional embodiment, the signal gain amplifying circuit includes a first resistor R1, a second resistor R2, a third resistor R3, a first operational amplifier a1, and a first feedback capacitor Cf;
the inverting input of the first operational amplifier A1 is connected to the gain input through the first resistor R1; the inverting input terminal of the first operational amplifier A1 is connected to the output terminal of the first operational amplifier A1 through the first feedback capacitor Cf; the inverting input terminal of the first operational amplifier A1 is connected to the gain output terminal through a second resistor R2;
the non-inverting input end of the first operational amplifier is grounded;
the output terminal of the first operational amplifier is connected to the gain output terminal through the third resistor R3.
In an alternative embodiment, the filtering circuit includes a low pass filter and a high pass filter; the low-pass filter has a low-pass input and a low-pass output, and the high-pass filter has a high-pass input and a high-pass output;
the low-pass input end is connected with the filtering input end, the low-pass output end is connected with the high-pass input end, and the high-pass output end is connected with the filtering output end.
In an optional embodiment, the low-pass filter is a second-order voltage-controlled low-pass filter.
In an alternative embodiment, the high pass filter is an active high pass filter.
In an optional embodiment, the data acquisition unit includes an analog-to-digital converter and a DSP chip;
the analog-to-digital converter is provided with an analog signal input end, a digital signal output end and a control end;
the control end is connected with the DSP chip;
the analog signal input end is connected with the input end of the data acquisition unit, and the digital signal output end is connected with the output end of the data acquisition unit.
Correspondingly, the utility model provides a high voltage circuit breaker mechanical fault identification equipment, including above arbitrary item vibration signal collection system.
The utility model provides a vibration signal collection system and high voltage circuit breaker mechanical failure identification equipment, this vibration signal collection system can once only gather multichannel vibration signal and convert the digital signal into and export, can realize high voltage circuit breaker's vibration volume fast and acquire the function, have good practicality.
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, 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 the drawings without creative efforts.
Fig. 1 shows a schematic structural diagram of a vibration signal acquisition device according to an embodiment of the present invention;
fig. 2 shows a schematic structural diagram of a signal processing unit according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a data acquisition unit according to an embodiment of the present invention;
fig. 4 shows a schematic structural diagram of a high-voltage circuit breaker mechanical fault recognition device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Fig. 1 shows the structure diagram of the vibration signal collecting device according to the embodiment of the present invention. The embodiment of the utility model provides a vibration signal acquisition device, which comprises an acceleration sensor, a signal processing unit and a data acquisition unit which are connected in sequence;
the acceleration sensor is used for converting the vibration of the measured object into an original analog signal and outputting the original analog signal; the signal processing unit is used for carrying out amplification processing and filtering processing on the original analog signal to generate a processed analog signal and outputting the processed analog signal; the data acquisition unit is used for converting the processing analog signal into a processing digital signal and outputting the processing digital signal.
Specifically, the number of the acceleration sensors is more than two, the number of the signal processing units corresponds to the number of the acceleration sensors, and the number of the data acquisition units corresponds to the number of the signal processing units.
Specifically, the acceleration sensor is a piezoelectric acceleration sensor, and the specific model is a 352B70 piezoelectric acceleration sensor.
Fig. 2 shows a schematic structural diagram of a signal processing unit according to an embodiment of the present invention. Specifically, the signal processing unit includes a signal gain amplifying circuit and a filter circuit;
the signal gain amplifying circuit is provided with a gain input end and a gain output end, and the filter circuit is provided with a filter input end and a filter output end;
the gain input end is connected with the output end of the acceleration sensor, the gain output end is connected with the filter input end, and the filter output end is connected with the input end of the data acquisition unit.
Specifically, the signal gain amplifying circuit comprises a first resistor R1, a second resistor R2, a third resistor R3, a first operational amplifier a1 and a first feedback capacitor Cf;
the inverting input of the first operational amplifier A1 is connected to the gain input through the first resistor R1; the inverting input terminal of the first operational amplifier A1 is connected to the output terminal of the first operational amplifier A1 through the first feedback capacitor Cf; the inverting input terminal of the first operational amplifier A1 is connected to the gain output terminal through a second resistor R2;
the non-inverting input end of the first operational amplifier is grounded;
the output terminal of the first operational amplifier is connected to the gain output terminal through the third resistor R3.
Specifically, the filter circuit includes a low-pass filter and a high-pass filter; the low-pass filter has a low-pass input and a low-pass output, and the high-pass filter has a high-pass input and a high-pass output;
the low-pass input end is connected with the filtering input end, the low-pass output end is connected with the high-pass input end, and the high-pass output end is connected with the filtering output end.
Specifically, the low-pass filter is a second-order voltage-controlled low-pass filter.
Specifically, the high-pass filter is an active high-pass filter.
Specifically, the structures of the second-order voltage-controlled low-pass filter and the high-pass filter refer to the structure shown in fig. 2.
Fig. 3 shows a schematic structural diagram of a data acquisition unit according to an embodiment of the present invention. Specifically, the data acquisition unit comprises an analog-to-digital converter and a DSP chip; the analog-to-digital converter is provided with an analog signal input end, a digital signal output end and a control end; the control end is connected with the DSP chip; the analog signal input end is connected with the input end of the data acquisition unit, and the digital signal output end is connected with the output end of the data acquisition unit.
In the embodiment of the utility model, analog-to-digital converter adopts the model to be AD7705, and the DSP chip adopts the model to be TMS320C5402, and the connected mode between the two is as the structure shown in fig. 3.
In specific implementation, in order to ensure that the frequencies of vibration signals acquired by the multiple paths of acceleration sensors tend to be the same, the built-in data of the DSP chip should be kept consistent; in specific implementation, a plurality of analog-to-digital converters corresponding to the multi-path acceleration sensor can be controlled based on one DSP chip, that is, the control ends of all the analog-to-digital converters are connected to the same DSP chip, so that the execution mode and the execution efficiency of the analog-to-digital converters can be ensured to be approximately the same.
Fig. 4 shows a schematic structural diagram of a high-voltage circuit breaker mechanical fault recognition device according to an embodiment of the present invention. Correspondingly, the utility model discloses the embodiment still provides a high voltage circuit breaker mechanical failure identification equipment, including above arbitrary item vibration signal pickup assembly.
Specifically, high voltage circuit breaker mechanical failure identification equipment still includes the fault recognition unit, and the fault recognition unit generally is equipment that has certain arithmetic function such as computer, well accuse processor, high in the clouds server, utilizes this kind of equipment to acquire and calculate vibration signal acquisition device's output signal to realize high voltage circuit breaker mechanical failure identification function.
In particular, specific fault identification methods can refer to the prior art, and the embodiment of the present invention provides only one feasible physical carrier for implementing a specific fault identification method.
To sum up, the embodiment of the utility model provides a vibration signal collection system and high voltage circuit breaker mechanical failure recognition equipment, this vibration signal collection system can once only gather multichannel vibration signal and convert the digital signal into and export, can realize high voltage circuit breaker's vibration volume fast and acquire the function, have good practicality.
The vibration signal acquisition device and the high-voltage circuit breaker mechanical fault recognition device provided by the embodiment of the invention are described in detail above, and the principle and the implementation mode of the invention are explained by applying specific examples, and the description of the above embodiments is only used for helping to understand the method and the core idea of the invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.
Claims (8)
1. A vibration signal acquisition device is characterized by comprising an acceleration sensor, a signal processing unit and a data acquisition unit which are sequentially connected;
the acceleration sensor is used for converting the vibration of the measured object into an original analog signal and outputting the original analog signal;
the signal processing unit is used for carrying out amplification processing and filtering processing on the original analog signal to generate a processed analog signal and outputting the processed analog signal;
the data acquisition unit is used for converting the processing analog signal into a processing digital signal and outputting the processing digital signal;
the acceleration sensor is a piezoelectric acceleration sensor;
the signal processing unit comprises a signal gain amplifying circuit and a filter circuit;
the signal gain amplifying circuit is provided with a gain input end and a gain output end, and the filter circuit is provided with a filter input end and a filter output end;
the gain input end is connected with the output end of the acceleration sensor, the gain output end is connected with the filter input end, and the filter output end is connected with the input end of the data acquisition unit.
2. The vibration signal acquisition apparatus according to claim 1, wherein the number of the acceleration sensors is two or more, the number of the signal processing units corresponds to the number of the acceleration sensors, and the number of the data acquisition units corresponds to the number of the signal processing units.
3. The vibration signal acquisition apparatus as claimed in claim 1, wherein the signal gain amplification circuit comprises a first resistor R1, a second resistor R2, a third resistor R3, a first operational amplifier a1, a first feedback capacitor Cf;
the inverting input of the first operational amplifier A1 is connected to the gain input through the first resistor R1; the inverting input terminal of the first operational amplifier A1 is connected to the output terminal of the first operational amplifier A1 through the first feedback capacitor Cf; the inverting input terminal of the first operational amplifier A1 is connected to the gain output terminal through a second resistor R2;
the non-inverting input end of the first operational amplifier is grounded;
the output terminal of the first operational amplifier is connected to the gain output terminal through the third resistor R3.
4. A vibration signal acquisition apparatus according to claim 1, wherein said filter circuit includes a low-pass filter and a high-pass filter; the low-pass filter has a low-pass input and a low-pass output, and the high-pass filter has a high-pass input and a high-pass output;
the low-pass input end is connected with the filtering input end, the low-pass output end is connected with the high-pass input end, and the high-pass output end is connected with the filtering output end.
5. A vibration signal acquisition apparatus as claimed in claim 4, wherein said low-pass filter is a second order voltage controlled low-pass filter.
6. A vibration signal acquisition apparatus as claimed in claim 4, wherein said high-pass filter is an active high-pass filter.
7. The vibration signal acquisition apparatus according to claim 1, wherein the data acquisition unit includes an analog-to-digital converter and a DSP chip;
the analog-to-digital converter is provided with an analog signal input end, a digital signal output end and a control end;
the control end is connected with the DSP chip;
the analog signal input end is connected with the input end of the data acquisition unit, and the digital signal output end is connected with the output end of the data acquisition unit.
8. A high-voltage circuit breaker mechanical fault recognition device, characterized in that it comprises a vibration signal acquisition apparatus according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020408072.0U CN212206345U (en) | 2020-03-26 | 2020-03-26 | Vibration signal acquisition device and high-voltage circuit breaker mechanical fault recognition equipment |
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| CN202020408072.0U CN212206345U (en) | 2020-03-26 | 2020-03-26 | Vibration signal acquisition device and high-voltage circuit breaker mechanical fault recognition equipment |
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| CN212206345U true CN212206345U (en) | 2020-12-22 |
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| CN202020408072.0U Active CN212206345U (en) | 2020-03-26 | 2020-03-26 | Vibration signal acquisition device and high-voltage circuit breaker mechanical fault recognition equipment |
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