CN203520173U - Probe-type electronic switch - Google Patents
Probe-type electronic switch Download PDFInfo
- Publication number
- CN203520173U CN203520173U CN201320240649.1U CN201320240649U CN203520173U CN 203520173 U CN203520173 U CN 203520173U CN 201320240649 U CN201320240649 U CN 201320240649U CN 203520173 U CN203520173 U CN 203520173U
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- Prior art keywords
- probe
- level
- low
- water
- detection circuit
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Abstract
The utility model discloses a probe-type electronic switch. A switch box and a probe box are connected together by means of a signal line. The probe box comprises a high-water-level probe, a low-water-level probe and a ground probe. A filter screen is arranged on the probe box and covers the high-water-level probe, the low-water-level probe and the ground probe. The high-water-level probe is electrically connected with a high-water-level detection circuit. The low-water-level probe is electrically connected with a low-water-level detection circuit. A relay switch control circuit is parallelly connected with a transformer control circuit. The ground probe is grounded. The transformer control circuit is used for supplying power to a microprocessor, the high-water-level detection circuit and the low-water-level detection circuit. The microprocessor is used for sending impulses to the high-water-level detection circuit and the low-water-level detection circuit. After the high-water-level detection circuit and the low-water-level detection circuit feed back the detected water level information to the microprocessor, the microprocessor controls the starting or stopping of operation of a water pump after analyzing the information. According to the scheme, the positive and negative polarities of each probe are changed periodically. Therefore, the electro-chemical corrosion of each probe can be effectively prevented.
Description
Technical field
The utility model relates to a kind of improvement of switch of detecting water level, especially relates to a kind of galvanic corrosion that can effectively prevent probe, aging-resistant probe-type electronic switch.
Background technology
Float switch in the market still adopts mechanical switch mostly, this mechanical open is shut and is provided with ball float along moving up and down on guide rod, to reach the unlatching of gauge tap or to close, this switch has an obvious drawback: when ball float has foreign material around, due to water flow, foreign material may block ball float; Thereby this float switch non insurance.In this year, have a lot of major companies all releasing new-type switch--inductive switch, and the mode of electricity consumption detects the position of liquid level; Inductive switch has two kinds at present, and a kind of is probe-type electronic switch, and a kind of is capacitance-type switch; Capacitance-type switch need be used special chip, and cost is higher; Probe-type electronic switch is at present due to problems such as ageing of electrodes, not universal.
Utility model content
The utility model object is that a kind of galvanic corrosion that can effectively prevent probe, aging-resistant probe-type electronic switch are provided in order to overcome the deficiencies in the prior art.
For achieving the above object, the technical solution adopted in the utility model is: a kind of probe-type electronic switch, comprises switch enclosure, probe box, screen pack; Between described switch enclosure and probe box, by signal wire, connect; Described probe box comprises high-level probe, low-level probe and ground probe; Described screen pack is arranged on probe box, and screen pack covers high-level probe, low-level probe and ground probe; Described switch enclosure built-in control circuit plate, described circuit board, comprises transformer control circuit, relay switch control circuit, microprocessor, high water stage detection circuit, low-water level detection circuit; Described high-level probe is electrically connected to high water stage detection circuit; Described low-level probe is electrically connected to low-water level detection circuit; Described relay switch control circuit is in parallel with transformer control circuit; Described ground probe ground connection; Described transformer control circuit is to microprocessor, high water stage detection circuit and the power supply of low-water level detection circuit; Described microprocessor is to high water stage detection circuit and low-water level detection circuit transmitted, described high water stage detection circuit and low-water level detection circuit feed back to microprocessor by the water level information of detection, by analysis, microprocessor is controlled starting working or quitting work of water pump.
Preferably, the surface of described high-level probe, low-level probe and ground probe is wrapped in insulating material, and the metal probe head of 2-5mm is exposed for conduction in the bottom of each probe; Described low-level probe is identical with the length of ground probe; The length of described high-level probe is less than low-level probe and ground probe; Described ground probe and low-level probe are placed in both sides, in the middle of high-level probe is placed in.
Preferably, between described high-level probe, low-level probe and ground probe and screen pack wall, be provided with gap.
Preferably, described screen pack is provided with flat recess, the electric leakage between ground capable of blocking probe and low-level probe, and meanwhile, described screen pack can prevent that impurity is wound around high-level probe, low-level probe and ground probe; Described screen pack bottom is provided with inlet opening, and its top is provided with vent port.
Preferably, the top of described high-level probe, low-level probe and ground probe is fixed and is placed on by sealant pouring and sealing in probe box, and probe encapsulating root is also provided with air-resistor chamber, has effectively prevented the electric leakage between probe and probe.
Preferably, described screen pack is detachable.
Preferably, the built-in special-purpose three core series connection plugs of described switch enclosure.
Preferably, in described high water stage detection circuit and low-water level detection circuit, the branch road of linking probe is provided with the isolated galvanic electric capacity of logical pulse current.
Preferably, described relay switch control circuit adopts transition diode protection relay contact.
Preferably, described high water stage detection circuit, low-water level detection circuit all adopt pulsed electric signal, and when water pump stops, high-level probe has pulse voltage, 8 pulses per second, and each pulse width 512us, detects water, and water pump is started working; When pump working, low-level probe has pulse voltage, 8 pulses per second, and each pulse width 512us, detects and there is no water, and water pump quits work.
Due to the utilization of technique scheme, the utility model compared with prior art has following advantages:
Probe-type electronic switch described in the utility model scheme utilizes microprocessor to high water stage detection circuit and low-water level detection circuit transmitted, described high water stage detection circuit and low-water level detection circuit feed back to microprocessor by the water level information of detection, by analysis, microprocessor is controlled starting working or quitting work of water plug; The positive-negative polarity periodically-varied of each probe, the very effective galvanic corrosion that prevents probe; And easy to make, cost is lower; The diode of transition has simultaneously substituted voltage dependent resistor (VDR), and it is faster that transition diode has reaction velocity, the feature that the life-span is longer.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, technical solutions of the utility model are described further:
Accompanying drawing 1 is the structural representation of probe-type electronic switch described in the utility model;
Accompanying drawing 2 is enlarged drawings that in accompanying drawing 1, A portion removes screen pack;
Accompanying drawing 3 is switch enclosure back side plug schematic diagram of probe-type electronic switch described in the utility model;
Accompanying drawing 5 is fundamental diagrams of probe-type electronic switch described in the utility model;
In figure: 1, switch enclosure; 2, series connection plug; 3, signal wire; 4, probe box; 5, screen pack; 6, high-level probe; 7, insulating material; 8, low-level probe; 9, probe 10, three cores series connection plugs; 11, air-resistor chamber; 12, relay switch control circuit; 13, microprocessor; 14, transformer control circuit; 15, high water stage detection circuit; 16, low-water level detection circuit.
embodiment
Below in conjunction with drawings and the specific embodiments, the utility model is described in further detail.
Accompanying drawing 1-5 is a kind of probe-type electronic switch described in the utility model, comprises switch enclosure 1, probe box 4, screen pack 5; Between described switch enclosure 1 and probe box 4, by signal wire 3, connect; Described probe box 4 comprises high-level probe 6, low-level probe 8 and ground probe 9; Described screen pack 5 is arranged on probe box 4, and screen pack 5 covers high-level probe 6, low-level probe 8 and ground probe 9; Described switch enclosure 1 built-in control circuit plate, described circuit board, comprises transformer control circuit 14, relay switch control circuit 12, microprocessor 13, high water stage detection circuit 15, low-water level detection circuit 16; Described high-level probe 6 is electrically connected to high water stage detection circuit 15; Described low-level probe 8 is electrically connected to low-water level detection circuit 16; Described relay switch control circuit 12 is in parallel with transformer control circuit 14; Described ground probe 9 ground connection; 14 pairs of microprocessors 13 of described transformer control circuit, high water stage detection circuit 15 and 16 power supplies of low-water level detection circuit; Described microprocessor 13 is to high water stage detection circuit 15 and low-water level detection circuit 16 transmitteds, described high water stage detection circuit 15 and low-water level detection circuit 16 feed back to microprocessor 13 by the water level information of detection, by analysis, microprocessor 13 is controlled starting working or quitting work of water pump.The surface of described high-level probe 6, low-level probe 8 and ground probe 9 is wrapped in insulating material, and the metal probe head of 2-5mm is exposed for conduction in the bottom of each probe; Described low-level probe 8 is identical with the length of ground probe 9; The length of described high-level probe 6 is less than low-level probe 8 and ground probe 9; Described ground probe 9 and low-level probe 8 are placed in both sides, in the middle of high-level probe 6 is placed in.Between described high-level probe 6, low-level probe 8 and ground probe 9 and screen pack 5 walls, be provided with gap; Described screen pack 5 is provided with flat recess, the electric leakage that ground capable of blocking probe 9 and low-level probe are 8, and meanwhile, described screen pack 5 can prevent that impurity is wound around high-level probe 6, low-level probe 8 and ground probe 9; Described screen pack 5 bottoms are provided with inlet opening (not marking), and its top is provided with vent port (not marking).The top of described high-level probe 6, low-level probe 8 and ground probe 9 is fixed and is placed on by sealant pouring and sealing in probe box 4, and probe encapsulating root is also provided with air-resistor chamber 11, has effectively prevented the electric leakage between probe and probe.Described screen pack 5 is detachable.The built-in special-purpose three core series connection plugs 10 of described switch enclosure 1, series connection plug 2.In described high water stage detection circuit 15 and low-water level detection circuit 16, the branch road of linking probe is provided with the isolated galvanic electric capacity of logical pulse current.Described relay switch control circuit 12 adopts transition diode protection relay contact.Described high water stage detection circuit 15, low-water level detection circuit 16 all adopt pulsed electric signal, and when water pump stops, high-level probe has pulse voltage, 8 pulses per second, and each pulse width 512us, detects water, and water pump is started working; When pump working, low-level probe has pulse voltage, 8 pulses per second, and each pulse width 512us, detects and there is no water, and water pump quits work; This kind of scheme effectively prevented the galvanic corrosion of probe, probe life-span like product long hundred more in the market doubly more than.
During work, the voltage on each probe produces by detection circuit separately, and No. three detection circuits are symmetrical, and detection circuit completes the judgement that whether sound end is touched to water, and result is flowed to microprocessor 13; Microprocessor 13 produces direct impulse and delivers to corresponding detection circuit.Pulse is the time of width 512us left and right, and dutycycle is 1/250.Probe only has pulse on corresponding stroke.While detecting water level to high-level probe 6, relay switching circuit 12 is just connected, pumping for water pump.While detecting water level to low-level probe 8, water pump quits work.
Due to the utilization of technique scheme, the utility model compared with prior art has following advantages:
Probe-type electronic switch described in the utility model scheme utilizes microprocessor to high water stage detection circuit and low-water level detection circuit transmitted, described high water stage detection circuit and low-water level detection circuit feed back to microprocessor by the water level information of detection, by analysis, microprocessor is controlled starting working or quitting work of water plug; The positive-negative polarity periodically-varied of each probe, the very effective galvanic corrosion that prevents probe; And easy to make, cost is lower; The diode of transition has simultaneously substituted voltage dependent resistor (VDR), and it is faster that transition diode has reaction velocity, the feature that the life-span is longer.
Below be only concrete exemplary applications of the present utility model, protection domain of the present utility model is not constituted any limitation.All employing equivalents or equivalence are replaced and the technical scheme of formation, within all dropping on the utility model rights protection scope.
Claims (10)
1. a probe-type electronic switch, is characterized in that: comprise switch enclosure, probe box, screen pack; Between described switch enclosure and probe box, by signal wire, connect; Described probe box comprises high-level probe, low-level probe and ground probe; Described screen pack is arranged on probe box, and screen pack covers high-level probe, low-level probe and ground probe; Described switch enclosure built-in control circuit plate, described circuit board, comprises transformer control circuit, relay switch control circuit, microprocessor, high water stage detection circuit, low-water level detection circuit; Described high-level probe is electrically connected to high water stage detection circuit; Described low-level probe is electrically connected to low-water level detection circuit; Described relay switch control circuit is in parallel with transformer control circuit; Described ground probe ground connection; Described transformer control circuit is to microprocessor, high water stage detection circuit and the power supply of low-water level detection circuit; Described microprocessor is to high water stage detection circuit and low-water level detection circuit transmitted, described high water stage detection circuit and low-water level detection circuit feed back to microprocessor by the water level information of detection, by analysis, microprocessor is controlled starting working or quitting work of water pump.
2. probe-type electronic switch according to claim 1, is characterized in that: the surface of described high-level probe, low-level probe and ground probe is wrapped in insulating material, and the metal probe head of 2-5mm is exposed for conduction in the bottom of each probe; Described low-level probe is identical with the length of ground probe; The length of described high-level probe is less than low-level probe and ground probe; Described ground probe and low-level probe are placed in both sides, in the middle of high-level probe is placed in.
3. probe-type electronic switch according to claim 1 and 2, is characterized in that: between described high-level probe, low-level probe and ground probe and screen pack wall, be provided with gap.
4. probe-type electronic switch according to claim 1, it is characterized in that: described screen pack is provided with flat recess, electric leakage between ground capable of blocking probe and low-level probe, meanwhile, described screen pack can prevent that impurity is wound around high-level probe, low-level probe and ground probe; Described screen pack bottom is provided with inlet opening, and its top is provided with vent port.
5. probe-type electronic switch according to claim 1, it is characterized in that: the top of described high-level probe, low-level probe and ground probe is fixed and be placed in probe box by sealant pouring and sealing, probe encapsulating root is also provided with air-resistor chamber, has effectively prevented the electric leakage between probe and probe.
6. probe-type electronic switch according to claim 1, is characterized in that: described screen pack is detachable.
7. probe-type electronic switch according to claim 1, is characterized in that: the built-in special-purpose three core series connection plugs of described switch enclosure.
8. probe-type electronic switch according to claim 1, is characterized in that: in described high water stage detection circuit and low-water level detection circuit, the branch road of linking probe is provided with the isolated galvanic electric capacity of logical pulse current.
9. probe-type electronic switch according to claim 1, is characterized in that: described relay switch control circuit adopts transition diode protection relay contact.
10. probe-type electronic switch according to claim 1, it is characterized in that: described high water stage detection circuit, low-water level detection circuit all adopt pulsed electric signal, when water pump stops, high-level probe has pulse voltage, 8 pulses per second, each pulse width 512us, detects water, and water pump is started working; When pump working, low-level probe has pulse voltage, 8 pulses per second, and each pulse width 512us, detects and there is no water, and water pump quits work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320240649.1U CN203520173U (en) | 2013-05-07 | 2013-05-07 | Probe-type electronic switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320240649.1U CN203520173U (en) | 2013-05-07 | 2013-05-07 | Probe-type electronic switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203520173U true CN203520173U (en) | 2014-04-02 |
Family
ID=50379077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320240649.1U Expired - Lifetime CN203520173U (en) | 2013-05-07 | 2013-05-07 | Probe-type electronic switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203520173U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103279141A (en) * | 2013-05-07 | 2013-09-04 | 苏州优德通力电气有限公司 | Probe-type electronic switch |
| CN107687416A (en) * | 2017-09-30 | 2018-02-13 | 惠州市金田科技有限公司 | The probe circuit and its method of water pump controller |
-
2013
- 2013-05-07 CN CN201320240649.1U patent/CN203520173U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103279141A (en) * | 2013-05-07 | 2013-09-04 | 苏州优德通力电气有限公司 | Probe-type electronic switch |
| CN107687416A (en) * | 2017-09-30 | 2018-02-13 | 惠州市金田科技有限公司 | The probe circuit and its method of water pump controller |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: Cheng lake road Wuzhong Economic Development Zone of Suzhou City, Jiangsu Province, No. 7 215000 Patentee after: GP Enterprises Co.,Ltd. Address before: Cheng lake road Wuzhong Economic Development Zone of Suzhou City, Jiangsu Province, No. 7 215128 Patentee before: GP ENTERPRISES Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140402 |