CN201141868Y - Small-current start screening circuit of quartz flexibility accelerometer - Google Patents
Small-current start screening circuit of quartz flexibility accelerometer Download PDFInfo
- Publication number
- CN201141868Y CN201141868Y CNU2007201334058U CN200720133405U CN201141868Y CN 201141868 Y CN201141868 Y CN 201141868Y CN U2007201334058 U CNU2007201334058 U CN U2007201334058U CN 200720133405 U CN200720133405 U CN 200720133405U CN 201141868 Y CN201141868 Y CN 201141868Y
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- China
- Prior art keywords
- accelerometer
- quartz
- circuit
- quartz flexible
- flex
- 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.)
- Expired - Lifetime
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Abstract
The utility model relates to a quartz-flex accelerometer screening circuit with low current startup, which includes a voltmeter connected between the upper end and the lower end of a torquer of the quartz-flex accelerometer, and an equivalent resistance connected in series between the lower end of the torquer of the quartz-flex accelerometer and the ground. The utility model can find defective quartz-flex accelerometer at the early stage by only a voltmeter and a resistance while not needing specific test instrument. The utility model has convenient usage and high efficiency, and solves the problem that the equivalent resistance adopted at the output of the present quartz-flex accelerometer is too big which leads to the inability of quartz-flex accelerometer start-up under low current.
Description
Technical field
The utility model relates to a kind of screening installation of quartz flexible accelerometer.
Background technology
Quartz flexible accelerometer is in system's use and machine debugging, and is excessive because of the equivalent resistance that its output terminal adopts, and causes accelerometer can not start under little electric current power supply state.
Summary of the invention
The utility model proposes the little current start screening of a kind of quartz flexible accelerometer circuit, it has solved the excessive technical matters that causes accelerometer can not start of equivalent resistance of the output terminal employing of existing quartz flexible accelerometer under little electric current power supply state.
Technical solution of the present utility model is:
The little current start screening of a kind of quartz flexible accelerometer circuit, its special character is, described screening circuit comprises the polarity detection circuit between the high-end and bottom of the torquer 12 that is connected on quartz flexible accelerometer and is serially connected in the low side of torquer 12 of quartz flexible accelerometer and an equivalent resistance 4 between the ground.
Above-mentioned polarity detection circuit preferred voltage table.
Above-mentioned voltage table digit preference voltage table 3.
The resistance of above-mentioned equivalent resistance 4 is quartz flexible accelerometer 1～4 times of output resistance when platform upper integral loop leveling duty.
The utility model has found a kind of circuit that comparatively effectively can reject the accelerometer of little current start fault, do not need special testing apparatus, only use a voltage table and a resistance, just can reject the quartz flexible accelerometer of functional defect in early days, easy to use, efficient is high.
Description of drawings
Fig. 1 is the circuit connection diagram of the utility model screening circuit;
Wherein: 1-quartz flexible accelerometer, 11-sensor, 12-torquer, 13-servoamplifier, 3-digital voltmeter, 4-equivalent resistance.
Embodiment
Circuit interconnect pattern is seen Fig. 1, (the simulation quartz flexible accelerometer is in platform upper integral loop leveling duty to be connected in series the equivalent resistance of 15k Ω between the torquer low side of quartz flexible accelerometer and ground, this moment should equivalence resistance resistance be about quartz flexible accelerometer 3.7 times of output resistance when platform upper integral loop leveling duty, this moment, starting current was about 0.8mA); Quartz flexible accelerometer is placed the 0g position, and digital voltmeter is connected between the high-end and bottom of torquer; With quartz flexible accelerometer commutation, the polarity of the output voltage by digital voltmeter is checked between the high-end and bottom of torquer the whether reverse of polarity of output voltage; If polarity changes, then quartz flexible accelerometer is normal, if polarity does not change, then there is little current start fault in quartz flexible accelerometer, is rejected.
Claims (4)
1, the little current start of a kind of quartz flexible accelerometer screening circuit is characterized in that: described screening circuit comprises the polarity detection circuit between the high-end and bottom of the torquer (12) that is connected on quartz flexible accelerometer and is serially connected in the low side of torquer (12) of quartz flexible accelerometer and the equivalent resistance (4) between the ground.
2, the little circuit start screening of quartz flexible accelerometer according to claim 1 circuit, it is characterized in that: described polarity detection circuit is a voltage table.
3, the little circuit start screening of quartz flexible accelerometer according to claim 2 circuit, it is characterized in that: described voltage table is digital voltmeter (3).
4, according to the little current start screening of claim 1 or 2 or 3 described quartz flexible accelerometers circuit, it is characterized in that: the resistance of described equivalent resistance (4) is quartz flexible accelerometer 1～4 times of output resistance when platform upper integral loop leveling duty.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201334058U CN201141868Y (en) | 2007-12-29 | 2007-12-29 | Small-current start screening circuit of quartz flexibility accelerometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201334058U CN201141868Y (en) | 2007-12-29 | 2007-12-29 | Small-current start screening circuit of quartz flexibility accelerometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201141868Y true CN201141868Y (en) | 2008-10-29 |
Family
ID=40069579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201334058U Expired - Lifetime CN201141868Y (en) | 2007-12-29 | 2007-12-29 | Small-current start screening circuit of quartz flexibility accelerometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201141868Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112858722A (en) * | 2021-01-08 | 2021-05-28 | 中国船舶重工集团公司第七0七研究所 | Saturation fault screening device of flexible accelerometer |
-
2007
- 2007-12-29 CN CNU2007201334058U patent/CN201141868Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112858722A (en) * | 2021-01-08 | 2021-05-28 | 中国船舶重工集团公司第七0七研究所 | Saturation fault screening device of flexible accelerometer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shaanxi electrical machinery factory Assignor: China Aerospace Times Electronics Corporation the 16th Institute Contract record no.: 2011610000194 Denomination of utility model: Small-current start screening circuit of quartz flexibility accelerometer Granted publication date: 20081029 License type: Exclusive License Record date: 20110923 |
|
| CX01 | Expiry of patent term |
Granted publication date: 20081029 |
|
| CX01 | Expiry of patent term |