CN202748099U - Capacitance type liquid level detecting device - Google Patents
Capacitance type liquid level detecting device Download PDFInfo
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- CN202748099U CN202748099U CN 201220416481 CN201220416481U CN202748099U CN 202748099 U CN202748099 U CN 202748099U CN 201220416481 CN201220416481 CN 201220416481 CN 201220416481 U CN201220416481 U CN 201220416481U CN 202748099 U CN202748099 U CN 202748099U
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Abstract
The utility model discloses a capacitance type liquid level detecting device which comprises a capacitance detecting module, a capacitance electrode, a storage memory module and an output interface, wherein the capacitance electrode is connected with a capacitance interface of the capacitance detecting module, the storage memory module is connected with an input-output (I/O) port of the capacitance detecting module, and the input-output (I/O) port of the capacitance detecting module is connected with an output interface. According to the capacitance type liquid level detecting device, an electrically erasable programmable read-only memory (EEPROM) is utilized to serve as an environment inherent capacitance memory module, and the fact that little capacitance can be detected as well is achieved. The capacitance type liquid level detecting device is good in adaptability and wide in applying range. Contact type or non-contact type detection methods can be used for the capacitance type liquid level detecting device, and the capacitance type liquid level detecting device can be used for detecting water, oil, toxic liquid, corrosive liquid and the like.
Description
Technical field
The utility model discloses a kind of liquid level detection device, particularly a kind of capacitance type liquid level pick-up unit.
Background technology
Along with the development of electronic technology, the application in people's life of various electronic detecting devices and detection means is more and more.At present, the device that carries out the liquid level detection commonly used normally adopts condenser type liquid (position) pick-up unit to detect, condenser type liquid (position) pick-up unit that occurs on the existing market, it is large that ubiquity the detection error, the shortcomings such as gobbet can't detect, it is larger that its reason is that usually the electric capacity requirement that detects needs, and general capacitance type liquid level pick-up unit can't be accomplished the requirement of meticulous detection.
Summary of the invention
The shortcoming that can't accomplish meticulous detection for the above-mentioned capacitance type liquid level pick-up unit of the prior art of mentioning, the utility model provides a kind of new capacitance type liquid level pick-up unit, it adopts touch capacitance switch structure that liquid level is detected, accuracy of detection is high, also can detect a small amount of liquid.
The technical scheme that its technical matters that solves the utility model adopts is: a kind of capacitance type liquid level pick-up unit, this device comprises capacitive detection module, capacitance electrode, store-memory module and output interface, capacitance electrode is connected on the capacitive interface of capacitive detection module, the store-memory module is connected on the I/O mouth of capacitive detection module, is connected with output interface on the I/O mouth of capacitive detection module.
The technical scheme that its technical matters that solves the utility model adopts further comprises:
Also include reseting module in the described device, reseting module is connected on the I/O mouth of capacitive detection module.
Described reseting module is key operated switch.
It is the chip of ADPT005 that described capacitive detection module adopts model.
Described store-memory module adopts EEPROM.
The beneficial effects of the utility model are: the utility model uses EEPROM as environment natural capacity memory module, can accomplish that the small electric capacity can detect equally, better adaptability of the present utility model, and the scope of application is wider.The utility model can use contact or non-contact detection mode, can be for detection of water, oil, toxic liquid, corrosive liquids etc.
Below in conjunction with the drawings and specific embodiments the utility model is described further.
Description of drawings
Fig. 1 is the utility model circuit block diagram.
Fig. 2 is the utility model circuit theory diagrams.
Embodiment
The present embodiment is the utility model preferred implementation, and other all its principles are identical with the present embodiment or approximate with basic structure, all within the utility model protection domain.
Please referring to accompanying drawing 1 and accompanying drawing 2, the utility model mainly comprises capacitive detection module, capacitance electrode, store-memory module and output interface, wherein, it is the special chip of ADPT005 processor that capacitive detection module adopts model, himself is with the MCU function, capacitance electrode is connected on the capacitive interface T0 of capacitive detection module, input for detection of signal, the store-memory module is connected on the I/O mouth of capacitive detection module, in the present embodiment, it is the eeprom chip of 24C02 that the store-memory module adopts model, being modeled to serial ports by the I/O mouth on two capacitive detection modules is connected with the store-memory module, carry out data transmission, by store-memory module stores memory environment natural capacity.Be connected with output interface on the I/O mouth of capacitive detection module, be used for the output control signal.In the present embodiment, also be connected with reseting module on an I/O mouth of capacitive detection module, reseting module is key operated switch, during implementation, also can control by high-low level the height of this resetting pin level, realizes resetting.
The utility model in use, treated device control store memory module carries out environment electric capacity memory, the electric capacity at recording electrode place, the datum quantity that changes as liquid.Thereby can improve small electric volume change and the impact of environment on detecting that liquid changes, thereby obtain accurate liquid detecting result.When liquid changes at the electrode place, on the electrode detection pin electric capacity can along with liquid have or without and change, this moment can export the signal that corresponding liquid has or not, finish detection.When intrinsic electrode environment value changed, only need to reset once just can reset new reference value, and it is stored in the store-memory module.
The utility model uses EEPROM as environment natural capacity memory module, can accomplish that the small electric capacity can detect equally, better adaptability of the present utility model, and the scope of application is wider.The utility model can use contact or non-contact detection mode, can be for detection of water, oil, toxic liquid, corrosive liquids etc.
Claims (5)
1. capacitance type liquid level pick-up unit, it is characterized in that: described device comprises capacitive detection module, capacitance electrode, store-memory module and output interface, capacitance electrode is connected on the capacitive interface of capacitive detection module, the store-memory module is connected on the I/O mouth of capacitive detection module, is connected with output interface on the I/O mouth of capacitive detection module.
2. capacitance type liquid level pick-up unit according to claim 1, it is characterized in that: also include reseting module in the described device, reseting module is connected on the I/O mouth of capacitive detection module.
3. capacitance type liquid level pick-up unit according to claim 2, it is characterized in that: described reseting module is key operated switch.
4. it is characterized in that according to claim 1 and 2 or 3 described capacitance type liquid level pick-up units: it is the chip of ADPT005 that described capacitive detection module adopts model.
5. it is characterized in that according to claim 1 and 2 or 3 described capacitance type liquid level pick-up units: described store-memory module adopts EEPROM.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220416481 CN202748099U (en) | 2012-08-22 | 2012-08-22 | Capacitance type liquid level detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220416481 CN202748099U (en) | 2012-08-22 | 2012-08-22 | Capacitance type liquid level detecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202748099U true CN202748099U (en) | 2013-02-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220416481 Expired - Fee Related CN202748099U (en) | 2012-08-22 | 2012-08-22 | Capacitance type liquid level detecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202748099U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106352948A (en) * | 2016-11-23 | 2017-01-25 | 深圳市阿达电子有限公司 | Novel capacitive-sensor liquid level detection system and method |
-
2012
- 2012-08-22 CN CN 201220416481 patent/CN202748099U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106352948A (en) * | 2016-11-23 | 2017-01-25 | 深圳市阿达电子有限公司 | Novel capacitive-sensor liquid level detection system and method |
| CN106352948B (en) * | 2016-11-23 | 2023-04-07 | 深圳市阿达电子有限公司 | Liquid level detection system and detection method of capacitive sensor |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130220 Termination date: 20190822 |