CN2837842Y - Egg-milk food freshness family expenses detecting device - Google Patents
Egg-milk food freshness family expenses detecting device Download PDFInfo
- Publication number
- CN2837842Y CN2837842Y CN 200520074014 CN200520074014U CN2837842Y CN 2837842 Y CN2837842 Y CN 2837842Y CN 200520074014 CN200520074014 CN 200520074014 CN 200520074014 U CN200520074014 U CN 200520074014U CN 2837842 Y CN2837842 Y CN 2837842Y
- Authority
- CN
- China
- Prior art keywords
- detecting device
- egg
- triode
- reometer
- family expenses
- 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
A kind of egg-milk food freshness family expenses detecting device, detecting device inside have the metal backing of two middle part band through holes, and metal backing is fixedly bulb and photoresistance respectively near through hole.Switch is connected with power supply, reometer; Two metal backings are in parallel with photoresistance, a termination reometer, and the base stage of another termination triode VT1, behind the amplifying circuit via triode VT1, VT2, VT3, capacitor C, resistance R 1, R2 composition, the loudspeaker that link to each other with triode VT3 emitter-base bandgap grading are connected.
Description
Affiliated technical field
The utility model relates to a kind of family expenses detecting device that is used for detecting food (milk and eggs) freshness.
Background technology
At present, the food freshness detecting device of these type of family expenses is actually rare on market, and this needs are arranged in the daily family life, and this series products is in the state that demand exceeds supply.
Summary of the invention
The purpose of this utility model provides a kind of simple in structure, and cost is low, can satisfy the detecting device that eggs and dairy products freshness detect.
The purpose of this utility model is achieved in that
There is the metal backing of two middle part band through holes detecting device inside, and metal backing is fixedly bulb and photoresistance respectively near through hole.
Switch is connected with power supply, reometer; Two metal backings are in parallel with photoresistance, a termination reometer, and the base stage of another termination triode VT1, behind the amplifying circuit via triode VT1, VT2, VT3, capacitor C, resistance R 1, R2 composition, the loudspeaker that link to each other with triode VT3 emitter-base bandgap grading are connected.
In the time will detecting the freshness of eggs (as egg), egg can be put into the food placing box, opening power, the light that bulb sends pass two on the metal backing through hole and egg after received by photoresistance, because good egg light transmission is better, the back light transmission that degenerates egg reduces, and the photoresistance resistance changes thereupon, thereby makes ammeter pointer deflection amplitude difference.When tested egg light transmission was better, the photoresistance resistance was less than normal, and electric current amplifies through amplifying circuit, and the oscillatory circuit work in the circuit is also pointed out by loudspeaker.If in the time of will detecting the freshness of milk (as milk), can pour an amount of tested milk into the food placing box, two metal backings of milk contact.Closed circuit switch, the difference of milk freshness cause the resistance difference of milk, thereby make electric current in the circuit different and be reflected on the needle deflection amplitude of reometer.Reometer is divided into two hurdle scales up and down, represents the freshness of eggs and milk respectively, and its different freshness district configures on the reometer dial plate.
Beneficial effect:
1, volume is small and exquisite, is easy to carry.
2, simple to operate, easy to use.
3, cost is low.
4, multi-usage.
Description of drawings
The utility model concrete structure is provided by the following drawings:
Accompanying drawing 1 is the shaft side figure of egg-milk food freshness family expenses detecting device
Accompanying drawing 2 is circuit diagrams of egg-milk food freshness family expenses detecting device
(1) is bulb among the figure, and (2) are metal backings 1, and (3) are metal backings 2, and (4) are the food placing boxes, and (5) are circuit box, and (6) are photoresistance, and (7) are reometers, and (8) are switches.
Embodiment
There are metal backing (2), (3) of two middle part band through holes egg-milk food freshness family expenses detecting device inside, and metal backing (2), (3) are fixedly bulb (1) and photoresistance (6) respectively near through hole.The entire circuit partial fixing is in circuit box (5).
Switch (8) is connected with power supply, reometer (7); Two metal backings (2), (3) are in parallel with photoresistance (6), one termination reometer (7), the base stage of another termination triode VT1, behind the amplifying circuit via triode VT1, VT2, VT3, capacitor C, resistance R 1, R2 composition, the loudspeaker B that links to each other with triode VT3 emitter-base bandgap grading is connected; The resistance difference of the light transmission of eggs or milk can cause electric current difference in the circuit, thereby is reflected on the reometer (7), so can read the food freshness according to the needle deflection amplitude of reometer (7).
Claims (1)
1. an egg-milk food freshness family expenses detecting device is characterized in that there is the metal backing of two middle part band through holes detecting device inside, and metal backing is fixedly bulb and photoresistance respectively near through hole; Switch is connected with power supply, reometer; Two metal backings are in parallel with photoresistance, a termination reometer, and the base stage of another termination triode VT1, behind the amplifying circuit via triode VT1, VT2, VT3, capacitor C, resistance R 1, R2 composition, the loudspeaker that link to each other with triode VT3 emitter-base bandgap grading are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520074014 CN2837842Y (en) | 2005-07-26 | 2005-07-26 | Egg-milk food freshness family expenses detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520074014 CN2837842Y (en) | 2005-07-26 | 2005-07-26 | Egg-milk food freshness family expenses detecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2837842Y true CN2837842Y (en) | 2006-11-15 |
Family
ID=37392329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520074014 Expired - Fee Related CN2837842Y (en) | 2005-07-26 | 2005-07-26 | Egg-milk food freshness family expenses detecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2837842Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104535588A (en) * | 2014-12-24 | 2015-04-22 | 河海大学常州校区 | Egg freshness nondestructive testing system based on Android system and egg freshness nondestructive testing method |
-
2005
- 2005-07-26 CN CN 200520074014 patent/CN2837842Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104535588A (en) * | 2014-12-24 | 2015-04-22 | 河海大学常州校区 | Egg freshness nondestructive testing system based on Android system and egg freshness nondestructive testing method |
| CN104535588B (en) * | 2014-12-24 | 2017-02-22 | 河海大学常州校区 | Egg freshness nondestructive testing system based on Android system and egg freshness nondestructive testing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |