CN105702010A - Wireless soil moisture content sensing device based on wifi communication - Google Patents
Wireless soil moisture content sensing device based on wifi communication Download PDFInfo
- Publication number
- CN105702010A CN105702010A CN201610264137.7A CN201610264137A CN105702010A CN 105702010 A CN105702010 A CN 105702010A CN 201610264137 A CN201610264137 A CN 201610264137A CN 105702010 A CN105702010 A CN 105702010A
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- CN
- China
- Prior art keywords
- moisture content
- soil moisture
- controller
- sensing device
- bleeder circuit
- 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.)
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Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/185—Electrical failure alarms
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The invention discloses a wireless soil moisture content sensing device based on wifi communication. The wireless soil moisture content sensing device comprises a controller, a soil moisture content sensor connected to the controller and a first power source for providing electric energy for the controller. The power source end, connected with the first power source, of the controller is provided with a power-down monitoring device which comprises a bleeder circuit, one end of the bleeder circuit is connected to the power source end, and the other end of the bleeder circuit is grounded. The common end of the bleeder circuit is connected to a base electrode of a triode, an emitting electrode of the triode is grounded, a collecting electrode of the triode is connected with a second power source through a third resistor, the collecting electrode of the triode is connected with a grid electrode of a field effect transistor, an alarm is connected between a source electrode of the field elect transistor and the second power source, and a drain electrode of the field effect transistor is grounded. The power-down monitoring function is achieved, reminding is achieved during powering down, and workers can take remedial measures in time.
Description
Technical field
The present invention relates to soil regime monitoring device field, in particular it relates to a kind of wireless soil moisture content sensing device based on wifi communication。
Background technology
Soil moisture content, i.e. soil moisture content, it it is the important indicator affecting crop growthing development, regional drought degree, difference due to factors such as region topography and geomorphology, soil physical chemistry characteristic, meteorologies, cause region soil moisture content distribution also extremely uneven, grasp the multidate information of Regional Soil Moisture Content in good time, for improving drought resisting management level, scientific guidance combats the drought and carry out relief work, prevent and alleviate Droughts and the loss caused thereof, ensure that domestic water, ecological water, scientific utilization water resource tool is of great significance。
Soil moisture content sensor is as important equipment, and its reliability of operation is related to the reliability of whole system。Power supply supply is the critically important factor of its steady operation。If the supply of its power supply disconnects, then affect the work of whole soil moisture content sensor, therefore its down Monitor Unit is extremely necessary。
Summary of the invention
The present invention is to solve that above-mentioned technical problem provides a kind of wireless soil moisture content sensing device based on wifi communication, it has down Monitor Unit function, points out, it is simple to staff adopts remedial measures in time during power down。
This invention address that the problems referred to above be the technical scheme is that
Wireless soil moisture content sensing device based on wifi communication, including controller, connect soil moisture content sensor on the controller and the first power supply of electric energy is provided for controller, described controller is also associated with information transmission device, described information transmission device is wifi module, the power end of the connection of described controller and the first power supply is provided with down Monitor Unit device, described down Monitor Unit device includes one end and is connected to power end and the bleeder circuit of other end ground connection, the common port of described bleeder circuit is connected in the base stage of audion, the grounded emitter of described audion and colelctor electrode are connected with second source by the 3rd resistance, the colelctor electrode of described audion is connected with the grid of field effect transistor, it is connected to warner between source electrode and the second source of described field effect transistor, the grounded drain of described field effect transistor。
The power supply supply condition of controller power source end is monitored by the down Monitor Unit device that utilizes of the present invention, and down Monitor Unit device drives warner to alert when controller power down or voltage are relatively low。During normal operation, the power end of controller is powered by the first power supply, and this voltage is carried out bleeder circuit dividing potential drop and this dividing potential drop can drive triode ON, and now, field effect transistor is in cut-off state；When power end power down or the voltage of controller are less, the dividing potential drop on bleeder circuit falls below the threshold value needed for triode ON, and now, under the effect of second source, field effect transistor turns on, and can drive and send out warner alarm。
As preferably, described bleeder circuit includes the first resistance and the second resistance that are in series。The form adopting the first resistance and the second resistant series dividing potential drop realizes blood pressure lowering to the first supply voltage, and its simple in construction is cheap。The common port of the bleeder circuit i.e. common port of the first resistance and the second resistance。
As preferably, described warner is buzzer。Adopting buzzer as warner, its alarm effect is strong, can effectively play alarm effect, and it easily drives。
As preferably, described warner is LED。But the flicker of LED its treat suggesting effect, its effect becomes apparent from especially at night, and it easily drives。
As preferably, described controller being also associated with temperature sensor。
To sum up, the invention has the beneficial effects as follows:
1, the present invention connects down Monitor Unit device on the power end of controller, and the power supply supply condition of its controller is monitored, and drives when controller power down or voltage are relatively low warner alarm to be easy to staff and adopts remedial measures in time。
2, the circuit structure of the down Monitor Unit device of the present invention is simple, with low cost。
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of the down Monitor Unit device of the present invention。
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments。Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention。
Embodiment 1:
The wireless soil moisture content sensing device based on wifi communication as shown in Figure 1, including controller, connect soil moisture content sensor on the controller and the first power supply of electric energy is provided for controller, described controller is also associated with information transmission device, described information transmission device is wifi module, the power end of the connection of described controller and the first power supply is provided with down Monitor Unit device, described down Monitor Unit device includes one end and is connected to power end and the bleeder circuit of other end ground connection, the common port of described bleeder circuit is connected in the base stage of audion T, the grounded emitter of described audion T and colelctor electrode are connected with second source by the 3rd resistance R3, the described colelctor electrode of audion T is connected with the grid of field effect transistor MOS, it is connected to warner between source electrode and the second source of described field effect transistor MOS, the grounded drain of described field effect transistor MOS。
Described bleeder circuit includes the first resistance R1 and the second resistance R2 that are in series。
Described warner is buzzer B or LED。
The standard operating voltage of wireless soil moisture content sensor is 7V to 35V。The down Monitor Unit device of this programme its operationally can consume electric energy, in order to make it not consume electric energy under normal circumstances or consume extremely low, the resistance of bleeder circuit all adopts high resistance measurement so that the circuit flowing through this resistance is extremely low。The resistance of bleeder circuit selects according to the voltage swing of the first power supply and running voltage。The resistance of the 3rd resistance also should be big as much as possible, such as 10M Ω, such second source when adopting common battery, the such as 9V of second source, triode ON, during field effect transistor cut-off, also can using for many years of common batteries。
As it has been described above, the present invention can be realized preferably。
Claims (5)
1. based on the wireless soil moisture content sensing device of wifi communication, including controller, connect soil moisture content sensor on the controller and the first power supply of electric energy is provided for controller, described controller is also associated with information transmission device, it is characterized in that: described information transmission device is wifi module, the power end of the connection of described controller and the first power supply is provided with down Monitor Unit device, described down Monitor Unit device includes one end and is connected to power end and the bleeder circuit of other end ground connection, the common port of described bleeder circuit is connected in the base stage of audion, the grounded emitter of described audion and colelctor electrode are connected with second source by the 3rd resistance, the colelctor electrode of described audion is connected with the grid of field effect transistor, it is connected to warner between source electrode and the second source of described field effect transistor, the grounded drain of described field effect transistor。
2. the wireless soil moisture content sensing device based on wifi communication according to claim 1, it is characterised in that: described bleeder circuit includes the first resistance and the second resistance that are in series。
3. the wireless soil moisture content sensing device based on wifi communication according to claim 1, it is characterised in that: described warner is buzzer。
4. the wireless soil moisture content sensing device based on wifi communication according to claim 1, it is characterised in that: described warner is LED。
5. the wireless soil moisture content sensing device based on wifi communication according to claim 1, it is characterised in that: described controller is also associated with temperature sensor。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610264137.7A CN105702010A (en) | 2016-04-26 | 2016-04-26 | Wireless soil moisture content sensing device based on wifi communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610264137.7A CN105702010A (en) | 2016-04-26 | 2016-04-26 | Wireless soil moisture content sensing device based on wifi communication |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105702010A true CN105702010A (en) | 2016-06-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610264137.7A Withdrawn CN105702010A (en) | 2016-04-26 | 2016-04-26 | Wireless soil moisture content sensing device based on wifi communication |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105702010A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1185294A (en) * | 1997-09-12 | 1999-03-30 | Nippon Boshoku Kogyo Kk | Dc power source device |
| CN203572867U (en) * | 2013-11-25 | 2014-04-30 | 深圳市金威源科技股份有限公司 | Input power supply power down detection circuit |
| CN204044147U (en) * | 2014-08-13 | 2014-12-24 | 珠江水利委员会珠江水利科学研究院 | A kind of portable soil soil moisture content harvester based on WiFi |
| CN104914115A (en) * | 2015-07-03 | 2015-09-16 | 天津特利普尔科技有限公司 | Soil moisture content tester and testing method thereof |
| CN205139233U (en) * | 2015-10-27 | 2016-04-06 | 天津宇川智科技有限公司 | Power failure alarm |
| CN205175456U (en) * | 2015-09-29 | 2016-04-20 | 郑州欧柯奇仪器制造有限公司 | Quick analyzer for soil moisture content |
| CN205582249U (en) * | 2016-04-26 | 2016-09-14 | 成都众山科技有限公司 | Wireless soil moisture content sensor based on wifi communication |
-
2016
- 2016-04-26 CN CN201610264137.7A patent/CN105702010A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1185294A (en) * | 1997-09-12 | 1999-03-30 | Nippon Boshoku Kogyo Kk | Dc power source device |
| CN203572867U (en) * | 2013-11-25 | 2014-04-30 | 深圳市金威源科技股份有限公司 | Input power supply power down detection circuit |
| CN204044147U (en) * | 2014-08-13 | 2014-12-24 | 珠江水利委员会珠江水利科学研究院 | A kind of portable soil soil moisture content harvester based on WiFi |
| CN104914115A (en) * | 2015-07-03 | 2015-09-16 | 天津特利普尔科技有限公司 | Soil moisture content tester and testing method thereof |
| CN205175456U (en) * | 2015-09-29 | 2016-04-20 | 郑州欧柯奇仪器制造有限公司 | Quick analyzer for soil moisture content |
| CN205139233U (en) * | 2015-10-27 | 2016-04-06 | 天津宇川智科技有限公司 | Power failure alarm |
| CN205582249U (en) * | 2016-04-26 | 2016-09-14 | 成都众山科技有限公司 | Wireless soil moisture content sensor based on wifi communication |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20160622 |