CN202520463U - Heater plug failure detection device - Google Patents
Heater plug failure detection device Download PDFInfo
- Publication number
- CN202520463U CN202520463U CN2012201874678U CN201220187467U CN202520463U CN 202520463 U CN202520463 U CN 202520463U CN 2012201874678 U CN2012201874678 U CN 2012201874678U CN 201220187467 U CN201220187467 U CN 201220187467U CN 202520463 U CN202520463 U CN 202520463U
- Authority
- CN
- China
- Prior art keywords
- heater plug
- glow plug
- detection device
- chip microcomputer
- failure detection
- 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 - Fee Related
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Abstract
The utility model discloses a heater plug failure detection device, which comprises a power supply circuit, an amplifying circuit, a singlechip, a driving circuit and an indicating lamp, wherein the output end of the power supply circuit is connected with the singlechip and a heater plug; the input end of the amplifying circuit is connected with the heater plug; the output end of the amplifying circuit is connected with the singlechip; and the singlechip, the driving circuit and the indicating lamp are connected in sequence. The heater plug failure detection device has the advantages: the resistance value of a heating resistor can be measured directly when the heater plug is not working, so that failure of the heating resistor is judged, and the detection effect is the same as that of detection with a current divider during working of the heater plug; and moreover, a current divider is not required to be connected externally, so that the size of the entire heater plug failure detection device is reduced, and convenience is brought to installation on an engine.
Description
Technical field
The utility model relates to a kind of glow plug Fail detecting apparatus.
Background technique
Glow plug is widely used in engine art.After severe cold engine cooling in period, glow plug can be motor provides heat energy to promote startability.
Existing glow plug Fail detecting apparatus (being used to detect the resistance wire fault whether in the glow plug); It comprises shunt and control panel; Control panel is provided with single-chip microcomputer, drive circuit and tutorial light; Electric current on the glow plug produces pressure drop through shunt, judges the resistance wire fault whether in the glow plug thereby single-chip microcomputer calculates the size of operating current on the glow plug according to this pressure drop signal.The problem that exists is: the external shunt of control panel, the volume of shunt is bigger, makes the volume of whole glow plug Fail detecting apparatus excessive, takes up space, and on motor, installs inconvenient.
The model utility content
The utility model technical problem to be solved is: provide a kind of volume little, glow plug Fail detecting apparatus easy for installation on motor.
The utility model addresses the above problem the technological scheme that is adopted: a kind of glow plug monitoring device, and it comprises power circuit, amplification circuit, single-chip microcomputer, drive circuit and tutorial light; The output terminal of said power circuit connects single-chip microcomputer and glow plug; The input end of said amplification circuit connects glow plug, and the output terminal of amplification circuit connects single-chip microcomputer; Said single-chip microcomputer, drive circuit and tutorial light are connected successively.
Compared with prior art; The advantage of the utility model is: the resistance value that can when glow plug is not worked, directly survey its heating resistor; Thereby judge whether fault of heating resistor, not only detect effect and when glow plug is worked, detect equally, and do not need external shunt with shunt; The volume of whole glow plug Fail detecting apparatus is reduced, conveniently on motor, install.
Description of drawings
Fig. 1 is the structured flowchart of the utility model glow plug Fail detecting apparatus.
Embodiment
Embodiment to the utility model further describes below in conjunction with accompanying drawing.
As shown in the figure, the utility model glow plug monitoring device, it comprises power circuit, amplification circuit, single-chip microcomputer, drive circuit and tutorial light; The output terminal of said power circuit connects single-chip microcomputer and glow plug; The input end of said amplification circuit connects glow plug, and the output terminal of amplification circuit connects single-chip microcomputer; Said single-chip microcomputer, drive circuit and tutorial light are connected successively.
During use; Power circuit is exported a steady current and is given the resistance wire in the glow plug; Electric current produces pressure drop through resistance wire, sends to single-chip microcomputer after amplification circuit amplifies pressure drop signal and handles, and single-chip microcomputer is judged whether fault of resistance wire through calculation process; If judge that resistance wire is normal, single-chip microcomputer is bright through driver element control tutorial light; If judge the resistance wire fault, single-chip microcomputer is through the flicker of driver element control tutorial light.
Claims (1)
1. glow plug Fail detecting apparatus, it is characterized in that: it comprises power circuit, amplification circuit, single-chip microcomputer, drive circuit and tutorial light; The output terminal of said power circuit connects single-chip microcomputer and glow plug; The input end of said amplification circuit connects glow plug, and the output terminal of amplification circuit connects single-chip microcomputer; Said single-chip microcomputer, drive circuit and tutorial light are connected successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201874678U CN202520463U (en) | 2012-04-28 | 2012-04-28 | Heater plug failure detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201874678U CN202520463U (en) | 2012-04-28 | 2012-04-28 | Heater plug failure detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202520463U true CN202520463U (en) | 2012-11-07 |
Family
ID=47103415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201874678U Expired - Fee Related CN202520463U (en) | 2012-04-28 | 2012-04-28 | Heater plug failure detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202520463U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109296490A (en) * | 2018-08-28 | 2019-02-01 | 中国北方发动机研究所(天津) | A kind of driving of diesel engine intake heating apparatus glow plug and protection circuit |
-
2012
- 2012-04-28 CN CN2012201874678U patent/CN202520463U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109296490A (en) * | 2018-08-28 | 2019-02-01 | 中国北方发动机研究所(天津) | A kind of driving of diesel engine intake heating apparatus glow plug and protection circuit |
| CN109296490B (en) * | 2018-08-28 | 2020-11-03 | 中国北方发动机研究所(天津) | Driving and protecting circuit for glow plug of air inlet heating device of diesel engine |
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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: 20121107 Termination date: 20150428 |
|
| EXPY | Termination of patent right or utility model |