CN203024929U - Testing device for knocking sensor - Google Patents
Testing device for knocking sensor Download PDFInfo
- Publication number
- CN203024929U CN203024929U CN 201220728025 CN201220728025U CN203024929U CN 203024929 U CN203024929 U CN 203024929U CN 201220728025 CN201220728025 CN 201220728025 CN 201220728025 U CN201220728025 U CN 201220728025U CN 203024929 U CN203024929 U CN 203024929U
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Abstract
The utility model discloses a testing device for a knocking sensor. The testing device comprises a signal output module, a power amplification module, a vibration module, a testing work fixture, an acceleration sensor, a resistance-capacitance testing module, a knocking signal processing module, an acceleration signal processing module and a data analysis module. The testing device disclosed by the utility model has the advantages of wide testing frequency, high vibration acceleration, strong capacity of resisting disturbance and high measurement accuracy; and a measured piece and the standard acceleration sensor are arranged back to back.
Description
Technical field
The utility model relates to the proving installation of a kind of proving installation, particularly a kind of detonation sensor.
Background technology
The piezoelectric type detonation sensor is widely used in the knock detection of engine body or cylinder, and the piezoelectric type detonation sensor is for detection of the caused combustion knock of engine oil gas mixture pre-ignition.
Cause the wastes such as the energy, time, manpower, material for fear of detecting bad when the final process, need to detect the handware stage of detonation sensor before injection moulding not, bad to detect in advance.
In the prior art, the quality of detonation sensor judgement generally all pass through to measure resistance and the electric capacity of detonation sensor, and artificial and machine error is inevitable when measuring, and causes measurement inaccurate.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of detonation sensor proving installation that can control in advance the detonation sensor state.
To achieve these goals, the technical solution of the utility model is as follows:
a kind of detonation sensor proving installation, comprise signal output module, power amplifier module, vibration module, test fixture, acceleration transducer, the resistance capacitance test module, the detonation signal processing module, acceleration signal processing module and data analysis module, described signal output module output signal, amplify through power amplifier module and be input to vibration module, this vibration module provides vibration for test fixture, described acceleration transducer and a tested detonation sensor are arranged on test fixture back-to-back, after acceleration transducer will be measured, signal is input to the acceleration signal processing module, after tested detonation sensor will be measured, signal is input to the detonation signal processing module, described detonation signal processing module and acceleration signal processing module are input to data analysis module after signal is processed, described capacitance resistance test module is measured electric capacity and the resistance of detonation sensor, and measured value is input to data analysis module.
Sine wave signal or the square-wave signal of the exportable different duty form of preferred described signal output module, signal dutyfactor can set up on their own.
Preferred described signal output module adopts sweep method output to comprise the signal of each frequency of 3～40Kh z.
Preferred described power amplifier module enlargement factor determines the vibration acceleration of vibration module, and vibration acceleration is 250g to the maximum.
Preferred described vibration module, the frequency of vibration is consistent with the signal frequency of signal output module, and vibration acceleration changes according to the size of current of power amplifier module.
Preferred described acceleration transducer and tested detonation sensor have identical vibration, and the signal output of acceleration transducer will be as tested detonation sensor amplitude versus frequency characte, the standard of phase-frequency characteristic.
Preferred described detonation signal processes and the acceleration signal processing module can be processed ultra-weak electronic signal, converts Dynamic Signal to amplitude-frequency signal, and the phase frequency signal can effectively prevent white noise.
Preferred described data analysis module can be according to the amplitude versus frequency characte that calculates voluntarily tested detonation sensor, phase-frequency characteristic, and according to setting threshold values, judge voluntarily whether tested sensor is qualified.
Detonation sensor proving installation of the present utility model, can measure accurately amplitude versus frequency characte, phase-frequency characteristic, resistance, capacitance and the insulation resistance of detonation sensor, can measure 3～40Khz, oscillatory acceleration up to the performance of the detonation sensor under the acceleration of gravity of 250 times.
Description of drawings
The composition frame chart of the detonation sensor proving installation that Fig. 1 provides for the utility model;
In figure:
1, signal output module 2, power amplifier module
3, vibration module 4, test fixture
5, acceleration transducer 6, tested detonation sensor
7, resistance capacitance test module 8, detonation signal processing module
9, acceleration signal processing module 10, data analysis module
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail:
as shown in Figure 1, a kind of detonation sensor proving installation of the present utility model, comprise signal output module 1, power amplifier module 2, vibration module 3, test fixture 4, acceleration transducer 5, resistance capacitance test module 7, detonation signal processing module 8, acceleration signal processing module 9 and data analysis module 10, described signal output module 1 output signal, amplify through power amplifier module 2 and be input to vibration module 3, this vibration module 3 provides vibration for test fixture 4, described acceleration transducer 5 and a tested detonation sensor 6 are arranged on test fixture 4 back-to-back, after acceleration transducer 5 will be measured, signal is input to acceleration signal processing module 9, after tested detonation sensor 6 will be measured, signal is input to detonation signal processing module 8, described detonation signal processing module 8 and acceleration signal processing module 9 are input to data analysis module 10 after signal is processed, described capacitance resistance test module 7 is measured electric capacity and the resistance of detonation sensor, and measured value is input to data analysis module 10.
Sine wave signal or the square-wave signal of the exportable different duty form of preferred described signal output module 1, signal dutyfactor can set up on their own.
Preferred described signal output module 1 adopts sweep method output to comprise the signal of each frequency of 3 to 40Kh z.
The vibration acceleration of preferred described vibration acceleration is 250g to the maximum.
Preferred described vibration module 3, the frequency of vibration is consistent with the signal frequency of signal output module 1, and vibration acceleration changes according to the size of current of power amplifier module 2.
Preferred described acceleration transducer 5 and tested detonation sensor 6 have identical vibration, and the signal output of acceleration transducer will be as the standard of tested detonation sensor amplitude versus frequency characte and phase-frequency characteristic.
Preferred described detonation signal processes and the acceleration signal processing module can be processed ultra-weak electronic signal, converts Dynamic Signal to amplitude-frequency signal and phase frequency signal, can effectively prevent white noise.
Preferred described data analysis module can be according to the amplitude versus frequency characte that calculates voluntarily tested detonation sensor, phase-frequency characteristic, and according to setting threshold values, judge voluntarily whether tested sensor is qualified.
signal output module output is from the swept-frequency signal of 3K-40Khz, power amplifier module amplifies swept-frequency signal and outputs to vibration module, vibration module is vibrated according to the signal after amplifying, tested detonation sensor and acceleration transducer output signal under vibration is processed and the acceleration signal processing module to detonation signal respectively, two signal processing modules are processed the signal of sensor, signal after handling is transferred to data analysis module, the resistance capacitance test module directly measure the resistance of tested detonation sensor and electric capacity and with transmitting measured values to data analysis module, data analysis module carries out computational analysis to the signal after handling, judge whether sensor is qualified.
Claims (1)
1. detonation sensor proving installation, it is characterized in that: comprise signal output module (1), power amplifier module (2), vibration module (3), test fixture (4), acceleration transducer (5), resistance capacitance test module (7), detonation signal processing module (8), acceleration signal processing module (9) and data analysis module (10), described signal output module (1) output signal, after amplifying, power amplifier module (2) is input to vibration module (3), this vibration module (3) provides up-down vibration for test fixture (4), described acceleration transducer (5) and a tested detonation sensor (6) are arranged on test fixture (4) back-to-back, after acceleration transducer (5) will be measured, signal is input to acceleration signal processing module (9), after tested detonation sensor (6) will be measured, signal is input to detonation signal processing module (8), described detonation signal processing module (8) and acceleration signal processing module (9) are input to data analysis module (10) after signal is processed, described capacitance resistance test module (7) is measured electric capacity and the resistance of detonation sensor, and measured value is input to data analysis module (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220728025 CN203024929U (en) | 2012-12-25 | 2012-12-25 | Testing device for knocking sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220728025 CN203024929U (en) | 2012-12-25 | 2012-12-25 | Testing device for knocking sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203024929U true CN203024929U (en) | 2013-06-26 |
Family
ID=48648908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220728025 Expired - Fee Related CN203024929U (en) | 2012-12-25 | 2012-12-25 | Testing device for knocking sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203024929U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108106653A (en) * | 2017-12-15 | 2018-06-01 | 芜湖致通汽车电子有限公司 | A kind of sensor vibration experimental data acquisition system |
-
2012
- 2012-12-25 CN CN 201220728025 patent/CN203024929U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108106653A (en) * | 2017-12-15 | 2018-06-01 | 芜湖致通汽车电子有限公司 | A kind of sensor vibration experimental data acquisition system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130626 Termination date: 20141225 |
|
| EXPY | Termination of patent right or utility model |