CN202362112U - Detonation sensor testing arrangement - Google Patents
Detonation sensor testing arrangement Download PDFInfo
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- CN202362112U CN202362112U CN2011204611519U CN201120461151U CN202362112U CN 202362112 U CN202362112 U CN 202362112U CN 2011204611519 U CN2011204611519 U CN 2011204611519U CN 201120461151 U CN201120461151 U CN 201120461151U CN 202362112 U CN202362112 U CN 202362112U
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Abstract
Disclosed is a detonation sensor testing arrangement, comprising a signal output module, a power amplification module, a vibrating module, a testing tool, two signal processing modules, a resistor-capacitor testing module, and a data analysis module, wherein the testing tool is provided with an acceleration transducer and a detonation sensor in a back-to-back manner; the acceleration transducer detects the vibration of the vibrating module and provides standard signals for the detonation sensor, with the acceleration transducer and the detonation sensor sharing the same vibrating frequency and acceleration; and there are two signal processing modules, used for processing the weak signals of the acceleration transducer and the detected detonation sensor respectively, converting the weak signals into voltage value and phase value of different frequencies, and outputting the voltage value and phase value to the data analysis module for processing. The detonation sensor testing arrangement features wide testing frequency, high vibration acceleration, strong anti-interference capability, and high measuring precision. The to-be-detected member and the standard acceleration transducer are installed in a back-to-back manner.
Description
Technical field
The utility model relates to a kind of proving installation, particularly relates to a kind of detonation sensor proving installation.
Background technology
The piezoelectric type detonation sensor is widely used in being used for the caused combustion knock of detection of engine gas-oil mixture pre-ignition in the pinking detection of engine body or cylinder.Detonation sensor is based on the piezoelectric effect principle, and during combustion knock, the detonation sensor that is installed on the engine cylinder-body will bear the pressure of engine cylinder-body vibration, and the piezoelectric element of detonation sensor converts the pressure that is born to voltage signal output.In order to guarantee that detonation sensor can the work of normal and stable ground under the vibration of different frequency and acceleration situation, need carry out performance test to detonation sensor.
In the prior art, generally all be the quality of judging detonation sensor through the resistance capacitance of measuring detonation sensor.Through the amplitude-frequency output that the electromagnetic type shaking table is measured the detonation sensor under 0～10KHz low frequency, adopt data collecting plate card to come acquired signal output.This kind method of testing survey frequency section is low, and the interference of signal is big, can't accurately measure the performance of detonation sensor.
Summary of the invention
The utility model is made in view of the problem that exists in the above-mentioned prior art, and purpose is to provide a kind of detonation sensor proving installation, and test frequency is brought up to 0～40KHz, reduces the interference of signal, thereby realizes the precision of detonation sensor test.
To achieve these goals, the technical scheme of the utility model is following:
A kind of detonation sensor proving installation; Comprise signal output module, power amplifier module, vibration module, test fixture, signal processing module, resistance capacitance test module and data analysis module; Acceleration transducer and detonation sensor are installed on the described test fixture back-to-back; Said acceleration transducer detects the vibration of said vibration module; For said detonation sensor provides standard signal, said acceleration transducer has identical vibration frequency and acceleration with said detonation sensor; Said signal processing module has two, is used for handling respectively the feeble signal of acceleration transducer and tested detonation sensor, and this feeble signal is converted into the magnitude of voltage and the phase value of different frequency, and outputs it to data analysis module and handle.
The magnitude of voltage of said different frequency and the frequency range of phase value are 0～40KHz.
The needed vibration signal of described signal output module output vibration module; Export to vibration module after the frequency signal amplification of said power amplifier module with signal output module output, provide vibration needed electric current; Said vibration module is the vibration that test fixture provides corresponding frequencies and acceleration according to the oscillating current signal of power amplifier module; Said resistance capacitance test module resistance is used to measure the resistance, electric capacity of tested detonation sensor and transmitting measured values is judged to data analysis module; Said data analysis module is used to receive the measured value of signal that said two signal processing modules finish dealing with and resistance, electric capacity; The line data analysis of going forward side by side; Calculate amplitude versus frequency characte, phase-frequency characteristic and resistance, capacitance and the insulating resistance value of detonation sensor, and then judge whether the performance of detonation sensor is qualified.
The vibration frequency of said vibration module is not less than 40KHz, acceleration is not less than 250g, and wherein g is an acceleration of gravity.
Vibration in the detonation sensor proving installation of the utility model, exportable 3～40KHz frequency range, vibration acceleration can reach 250g, therefore can handle ultra-weak electronic signal, converts Dynamic Signal to amplitude-frequency signal, phase frequency signal, can effectively prevent white noise.
Description of drawings
Fig. 1 is the composition frame chart of the detonation sensor proving installation of the utility model;
Fig. 2 is the workflow diagram of the utility model measurement mechanism.
Embodiment
Be elaborated below in conjunction with the detonation sensor proving installation and the method for testing thereof of accompanying drawing to the utility model.
Fig. 1 shows the composition frame chart of the detonation sensor proving installation of the utility model.As shown in Figure 1; This device is by signal output module 1, power amplifier module 2, vibration module 3, test fixture 4, resistance capacitance measurement module 7 and the 1st, the 2nd signal processing module 8; 9 form with data analysis module 10, and acceleration transducer 5 and tested detonation sensor 6 wherein are installed on the test fixture 4.
The sine wave signal of signal output module 1 exportable different duty form, square-wave signal are given power amplifier module, and the frequency of signal will determine the vibration frequency of vibration module, adopt the frequency sweep mode to export the signal of each frequency that comprises 3～40KHz.
Power amplifier module 2 amplifies the signal of the signal output module that receives, and amplification multiple will determine the vibration acceleration of vibration module.
Acceleration transducer 5 and tested detonation sensor 6 are installed on the test fixture 4 back-to-back; Acceleration transducer 5 has identical vibration frequency with tested detonation sensor 6, and the signal output of acceleration transducer will be as the standard of detonation sensor amplitude versus frequency characte, phase-frequency characteristic.
Resistance capacitance test module 7 is directly measured by the resistance of detonation sensor, electric capacity and with transmitting measured values and is judged to data analysis module.
1st, the 2nd signal processing module 8,9 is respectively applied for the feeble signal of handling acceleration transducer and tested detonation sensor; Acceleration transducer and faint dynamic voltage signal of tested detonation sensor output; Signal processing module must be converted into magnitude of voltage and phase value under the different frequency with it, and outputs it to data analysis module and handle.
Referring now to Fig. 2 describes the workflow of this proving installation:
In step 100 beginning, in the swept-frequency signal of step 101 signal output module output from 3K～40KHz; Amplify in step 102 pair swept-frequency signal; In step 103, vibration module vibrates according to the signal after amplifying, and detonation sensor and acceleration transducer output signal to signal processing module under vibration; In step 104, signal processing module is handled the signal of sensor, and the signal after handling is transferred to data computation module; In step 105, data computation module is carried out computational analysis to the signal after handling, and in step 106, judges whether sensor is qualified, in step 107, finishes then.
Claims (4)
1. detonation sensor proving installation; Comprise signal output module, power amplifier module, vibration module, test fixture, signal processing module, resistance capacitance test module and data analysis module; It is characterized in that: acceleration transducer and detonation sensor are installed on the described test fixture back-to-back; Said acceleration transducer detects the vibration of said vibration module; For said detonation sensor provides standard signal, said acceleration transducer has identical vibration frequency and acceleration with said detonation sensor; Said signal processing module has two, is respectively applied for the feeble signal of handling acceleration transducer and tested detonation sensor, and this feeble signal is converted into the magnitude of voltage and the phase value of different frequency, and outputs it to data analysis module and handle.
2. detonation sensor proving installation according to claim 1 is characterized in that: the magnitude of voltage of said different frequency and the frequency range of phase value are 0～40KHz.
3. detonation sensor proving installation according to claim 1 and 2 is characterized in that: the needed vibration signal of described signal output module output vibration module; Export to vibration module after the frequency signal amplification of said power amplifier module with signal output module output, provide vibration needed electric current; Said vibration module is the vibration that test fixture provides corresponding frequencies and acceleration according to the oscillating current signal of power amplifier module; Said resistance capacitance test module resistance is used to measure the resistance, electric capacity of tested detonation sensor and transmitting measured values is judged to data analysis module; Said data analysis module is used to receive the measured value of signal that said two signal processing modules finish dealing with and resistance, electric capacity; The line data analysis of going forward side by side; Calculate amplitude versus frequency characte, phase-frequency characteristic and resistance, capacitance and the insulating resistance value of detonation sensor, and then judge whether the performance of detonation sensor is qualified.
4. detonation sensor proving installation according to claim 3 is characterized in that: the vibration frequency of said vibration module is not less than 40KHz, acceleration is not less than 250g.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204611519U CN202362112U (en) | 2011-11-18 | 2011-11-18 | Detonation sensor testing arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204611519U CN202362112U (en) | 2011-11-18 | 2011-11-18 | Detonation sensor testing arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202362112U true CN202362112U (en) | 2012-08-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2011204611519U Expired - Fee Related CN202362112U (en) | 2011-11-18 | 2011-11-18 | Detonation sensor testing arrangement |
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| CN (1) | CN202362112U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107806388A (en) * | 2016-09-09 | 2018-03-16 | 福特环球技术公司 | Method and system for detonation sensor reasonableness check |
| CN111707757A (en) * | 2020-06-29 | 2020-09-25 | 杭州柯林电气股份有限公司 | Transformer oil online chromatographic analysis method based on FID |
| CN116754130A (en) * | 2023-05-30 | 2023-09-15 | 无锡映诺汽车科技有限公司 | Knock sensor fault detection circuit and method |
-
2011
- 2011-11-18 CN CN2011204611519U patent/CN202362112U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107806388A (en) * | 2016-09-09 | 2018-03-16 | 福特环球技术公司 | Method and system for detonation sensor reasonableness check |
| CN107806388B (en) * | 2016-09-09 | 2021-08-27 | 福特环球技术公司 | Method and system for knock sensor plausibility checking |
| CN111707757A (en) * | 2020-06-29 | 2020-09-25 | 杭州柯林电气股份有限公司 | Transformer oil online chromatographic analysis method based on FID |
| CN111707757B (en) * | 2020-06-29 | 2023-01-10 | 杭州柯林电气股份有限公司 | Transformer oil online chromatographic analysis method based on FID |
| CN116754130A (en) * | 2023-05-30 | 2023-09-15 | 无锡映诺汽车科技有限公司 | Knock sensor fault detection circuit and method |
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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: 20120801 Termination date: 20141118 |
|
| EXPY | Termination of patent right or utility model |