CN201662421U - Infrared electronic liquid level gauge - Google Patents
Infrared electronic liquid level gauge Download PDFInfo
- Publication number
- CN201662421U CN201662421U CN2009202536906U CN200920253690U CN201662421U CN 201662421 U CN201662421 U CN 201662421U CN 2009202536906 U CN2009202536906 U CN 2009202536906U CN 200920253690 U CN200920253690 U CN 200920253690U CN 201662421 U CN201662421 U CN 201662421U
- Authority
- CN
- China
- Prior art keywords
- infrared
- liquid level
- triode
- receive
- serial connection
- 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
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 47
- 230000001681 protective effect Effects 0.000 claims description 5
- 230000035945 sensitivity Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005288 gauge theory Methods 0.000 description 1
Images
Landscapes
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The utility model relates to an infrared electronic liquid level gauge, which comprises a liquid level lower limit infrared sensor, a liquid level upper limit infrared sensor and an alarm. When the liquid level is lower than the lower limit liquid level or higher than the upper limit liquid level, a light-emitting diode is lightened; when the liquid level is normal, the light-emitting diode is extinguished, and thereby, a high and low liquid level alarm is realized. The infrared electronic liquid level gauge has low price, smaller volume, high sensitivity and high practicability.
Description
Technical field
The utility model relates to a kind of infrared exoelectron liquid level gauge, belongs to the electric detective technology field.
Background technology
Existing liquid level gauge mainly contains ultrasonic level gage, radar level gauge etc., and these liquid level gauge precision are higher, but cost an arm and a leg, and are not suitable for widespread usage; Though traditional floating ball lever meter low price, volume is bigger, is not suitable for the less situation of liquid, even if can equal proportion dwindle, but the surface tension of dwindling back liquid just significantly strengthens, and the sensitivity of liquid level gauge just reduces greatly, does not satisfy actual needs.
Summary of the invention
The utility model purpose is to overcome the deficiency of prior art, and a kind of low price, volume is less, sensitivity is higher infrared exoelectron liquid level gauge are provided.
The utility model is finished by the following technical programs: a kind of infrared exoelectron liquid level gauge, form by liquid level lower limit infrared sensor, liquid level upper limit infrared sensor and alarm; Liquid level lower limit infrared sensor comprises Infrared radiating circuit and Infrared receiving circuit, and the Infrared radiating circuit is to receive the Infrared emitting diode from positive source through master switch, and the serial connection divider resistance is connected to power cathode; The Infrared receiving circuit is to receive the Infrared reception diode from positive source through master switch, and the serial connection divider resistance is connected to power cathode; Liquid level upper limit infrared sensor comprises Infrared radiating circuit and Infrared receiving circuit, and the Infrared radiating circuit is to receive divider resistance from positive source through master switch, and serial connection Infrared emitting diode is connected to power cathode; The Infrared receiving circuit is to receive divider resistance from positive source through master switch, and serial connection Infrared reception diode is connected to power cathode; Alarm is made up of light emitting diode and triode; detect indicating circuit and receive protective resistance through master switch from positive source; the serial connection light emitting diode; receive the collector of triode again; the base stage of triode is received between the divider resistance and Infrared reception diode of Infrared receiving circuit, and the emitter of triode is received power cathode.
Principle of work of the present utility model:
When liquid level was lower than bottom limit level, the light that the Infrared reception diode receives infrared-emitting diode increased, and made resistance value reduce, and caused the current potential of transistor base to raise, the triode conducting, and light emitting diode is lighted; When liquid level was higher than bottom limit level, the light of the Infrared emitting diode that the Infrared reception diode receives reduced, and made resistance value increase, and caused the current potential of transistor base to reduce, and triode ends, and light emitting diode extinguishes.When liquid level was higher than upper limit liquid level, the light that the Infrared reception diode receives the Infrared emitting diode reduced, and made resistance value increase, and caused the current potential of transistor base to raise, the triode conducting, and light emitting diode is lighted; When liquid level was lower than upper limit liquid level, the light that the Infrared reception diode receives the Infrared emitting diode increased, and made the resistance value of infrared photodiode reduce, and caused the current potential of transistor base to reduce, and triode ends, and light emitting diode extinguishes.
The utility model compared with prior art has following advantage and effect:
(1) low price.The utility model is lower than prices such as existing ultrasonic level gage, radar level gauges.
(2) volume is less.The utility model volume is less, is suitable for many occasions.
(3) highly sensitive.Compared with traditional floating ball lever meter, when lacking the level gauging situation, it is very accurate that sensitivity of the present utility model just seems.
Description of drawings
Fig. 1 is a kind of infrared exoelectron liquid level gauge theory diagram;
Fig. 2 is a kind of infrared exoelectron liquid level gauge circuit theory diagrams.
Embodiment
Below in conjunction with accompanying drawing to originally being that utility model is described further
A kind of infrared exoelectron liquid level gauge is made up of liquid level lower limit infrared sensor, liquid level upper limit infrared sensor and alarm.Liquid level lower limit infrared sensor comprises Infrared radiating circuit and Infrared receiving circuit, and the Infrared radiating circuit is to receive Infrared emitting diode VD from power supply E positive pole through master switch K
1, serial connection divider resistance R
1, be connected to power cathode; The Infrared receiving circuit is to receive Infrared reception diode PD from power supply E positive pole through master switch K
1, serial connection divider resistance R
2, being connected to power cathode, alarm is by LED
1With triode T
1Form, detect indicating circuit and receive protective resistance R through master switch K from power supply E positive pole
3, the serial connection LED
1, receive triode T again
1Collector, the base stage of triode is received the Infrared reception diode PD of Infrared receiving circuit
1With divider resistance R
2Between, the emitter of triode is received power cathode.Liquid level upper limit infrared sensor comprises Infrared radiating circuit and Infrared receiving circuit, and the Infrared radiating circuit is to receive divider resistance R from power supply E positive pole through master switch K
4, serial connection Infrared emitting diode VD
2, be connected to power cathode; The Infrared receiving circuit is to receive divider resistance R from power supply E positive pole through master switch K
5, serial connection Infrared reception diode PD
2, be connected to power cathode; Alarm is by LED
2With triode T
2Form, detect indicating circuit and receive protective resistance R through master switch K from power supply E positive pole
6, the serial connection LED
2, receive triode T again
2Collector, the base stage of triode is received the divider resistance R of Infrared receiving circuit
5With Infrared reception diode PD
2Between, the emitter of triode is received power cathode.
The principle of work of present embodiment: when liquid level is lower than bottom limit level, Infrared reception diode PD
1Receive infrared-emitting diode VD
1Light increase Infrared reception diode PD
1Resistance value reduce, cause triode T
1The current potential of base stage raises, triode T
1Conducting, LED
1Light, realize reporting to the police; When liquid level is higher than bottom limit level, Infrared reception diode PD
1Receive infrared-emitting diode VD
1Light reduce Infrared reception diode PD
1Resistance value increase, cause triode T
1The current potential of base stage reduces, triode T
1End LED
1Extinguish; When liquid level is higher than upper limit liquid level, Infrared reception diode PD
2Receive infrared-emitting diode VD
2Light reduce Infrared reception diode PD
2Resistance value increase, cause triode T
2The current potential of base stage raises, triode T
2Conducting, LED
2Light, realize reporting to the police; When liquid level was lower than upper limit liquid level, the Infrared reception diode met PD
2Receive infrared-emitting diode VD
2Light increase infrared photodiode PD
2Resistance value reduce, cause triode T
2The current potential of base stage reduces, triode T
2End LED
2Extinguish.
Claims (1)
1. an infrared exoelectron liquid level gauge is made up of liquid level lower limit infrared sensor, liquid level upper limit infrared sensor and alarm, it is characterized in that:
A, liquid level lower limit infrared sensor comprise Infrared radiating circuit and Infrared receiving circuit, and the Infrared radiating circuit is to receive Infrared emitting diode VD from power supply E positive pole through master switch K
1, serial connection divider resistance R
1, be connected to power cathode; The Infrared receiving circuit is to receive Infrared reception diode PD from power supply E positive pole through master switch K
1, serial connection divider resistance R
2, be connected to power cathode; Alarm is by LED
1With triode T
1Form, detect indicating circuit and receive protective resistance R through master switch K from power supply E positive pole
3, the serial connection LED
1, receive triode T again
1Collector, the base stage of triode is received the Infrared reception diode PD of Infrared receiving circuit
1With divider resistance R
2Between, the emitter of triode is received power cathode;
B, liquid level upper limit infrared sensor comprise Infrared radiating circuit and Infrared receiving circuit, and the Infrared radiating circuit is to receive divider resistance R from power supply E positive pole through master switch K
4, serial connection Infrared emitting diode VD
2, be connected to power cathode; The Infrared receiving circuit is to receive divider resistance R from power supply E positive pole through master switch K
5, serial connection Infrared reception diode PD
2, be connected to power cathode; Alarm is by LED
2With triode T
2Form, detect indicating circuit and receive protective resistance R through master switch K from power supply E positive pole
6, the serial connection LED
2, receive triode T again
2Collector, the base stage of triode is received the divider resistance R of Infrared receiving circuit
5With Infrared reception diode PD
2Between, the emitter of triode is received power cathode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202536906U CN201662421U (en) | 2009-11-12 | 2009-11-12 | Infrared electronic liquid level gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202536906U CN201662421U (en) | 2009-11-12 | 2009-11-12 | Infrared electronic liquid level gauge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201662421U true CN201662421U (en) | 2010-12-01 |
Family
ID=43232840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202536906U Expired - Fee Related CN201662421U (en) | 2009-11-12 | 2009-11-12 | Infrared electronic liquid level gauge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201662421U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104977065A (en) * | 2014-04-04 | 2015-10-14 | 上海华虹宏力半导体制造有限公司 | Liquid level monitor system alarm protection device |
-
2009
- 2009-11-12 CN CN2009202536906U patent/CN201662421U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104977065A (en) * | 2014-04-04 | 2015-10-14 | 上海华虹宏力半导体制造有限公司 | Liquid level monitor system alarm protection device |
| CN104977065B (en) * | 2014-04-04 | 2018-06-08 | 上海华虹宏力半导体制造有限公司 | A kind of alarm protecting apparatus of level monitoring system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201937565U (en) | Liquid level meter control switch for photoelectric quartz glass tube | |
| CN204255973U (en) | A kind of electric bicycle velocity-measuring system | |
| CN204995835U (en) | Intelligent feeding bottle that can temperature measurement | |
| CN201662422U (en) | Infrared pulse electronic liquid level meter | |
| CN201662421U (en) | Infrared electronic liquid level gauge | |
| CN105699916A (en) | Integrated LED street lamp test system | |
| CN201244796Y (en) | Electricity measuring indication screwdriver with illuminator | |
| CN201748956U (en) | Photoelectric liquid level sensor | |
| CN204707109U (en) | A kind of button, a kind of terminal equipment | |
| CN104883174A (en) | Key, terminal device and method for determining key stroke | |
| CN203647346U (en) | Optical height measuring device | |
| CN205038954U (en) | Electro -luminescent drum | |
| CN202177456U (en) | Temperature sensing head and ear temperature thermometer | |
| CN221078779U (en) | Detection device for electrified environment in narrow space | |
| CN2699258Y (en) | Reflection type infra-red fuel transducer | |
| CN217385635U (en) | Single lamp test pencil circuit and test pencil | |
| CN203786277U (en) | LED lamp tube testing frame | |
| CN209706867U (en) | A kind of transmitter of testing temperature and liquid level one | |
| CN204575727U (en) | A kind of multifunction test pencil | |
| CN204101673U (en) | A kind of broken circuit detection circuit | |
| CN203489943U (en) | Oil detection alarm of motorcycle | |
| CN202382739U (en) | Plumb bob with illuminating lamp | |
| CN106640267A (en) | Four-in-one intelligent engine oil sensor | |
| CN202393820U (en) | Inductive test pen | |
| CN202017917U (en) | Novel light-emitting diode (LED) lamp tube |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101201 Termination date: 20131112 |