CN104703322A - Non-contact working circuit structure - Google Patents
Non-contact working circuit structure Download PDFInfo
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- CN104703322A CN104703322A CN201310652280.XA CN201310652280A CN104703322A CN 104703322 A CN104703322 A CN 104703322A CN 201310652280 A CN201310652280 A CN 201310652280A CN 104703322 A CN104703322 A CN 104703322A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
The non-contact working circuit structure provided by the invention can reliably and practically work by using plants; the non-contact operating circuit structure is provided with a detector (70a) and a load controller (80), wherein when a human body approaches or contacts a plant (10), the detector (70a) detects a change in electrostatic capacitance generated at a position near the human body or a position near the plant and outputs a control signal, and when receiving the control signal, the load controller (80) applies a power supply voltage to a load (90).
Description
Technical field
The present invention relates to the structure of carrying out the contactless operating circuit (proximity working circuit) of work when human contact or close plant.
Background technology
In the Urban Space that the buildings such as high buildings and large mansions stand in great numbers, the plant being planted in the place such as pavement or public open space can bring unthinkable tremendous influence to people.Such as, the result for the treatment of had is all the time all noticeable, but also also has following spiritual effect: namely, as long as see that plant mood will be stablized calmness, relax frightened or anger and then light relieving fatigue etc.In addition, from made by above-mentioned change blood pressure reduce or of flaccid muscles, make the aspects such as the α ripple brain wave increases, beats minimizing, also there is the effect loosening body and mind.
Owing to expecting above-mentioned effect mentally, on health, the sign of each family or office, shop etc. introduced plant all energetically in recent years can be seen.
Thus, also proposed following technology: namely, can by people feel carry out the change that perception plant produces because of outside stimulus, thus the technology (for example, referring to patent documentation 1) that same plant exchanges can be sought.
The biotic potential that this technology is conceived to its inside when plant is subject to the stimulation from outside changes this situation, detects the change of this biotic potential, and it can be used as circuits for triggering (trigger) and make the loaded work piece of LED or buzzer etc.
Patent documentation 1: No. 9-271263, JP Publication, Unexamined Patent
But distinguished that above-mentioned prior art is following technology by experiment: namely, above-mentioned prior art is not configured to the degree that so-called those skilled in the art can obtain the technique effect as object repeatedly constantly.
That is, applicant's content disclosed in patent documentation 1 attempts implementing " with the conversational system of plant ".
Specifically, implement according to following order.First, prepare potted plant, in the bottom of its stem and middle part installing electrodes, thus attempt measuring the current potential produced between the electrode at bottom and middle part.The differential amplifier of use high power alleviates the induction from industrial alternating electromotive force 100V power line, then uses oscilloscope tube to observe its signal.And, carrying out this viewing duration, repeatedly carry out human body near or away from the action of plant or hand contact or the action away from plant.
Consequently, the waveform using oscilloscope tube to observe is only the waveform of the 50Hz based on the induction from industrial AC power, and does not observe the signal of similar biotic potential.
Following situation can be considered about its reason.That is,
Induction from AC power betides on the whole leaf of plant, induced current i leads to along stemflow and falls on ground via the distributed capacitance Ce between flowerpot and ground, but owing to there is resistance r in this stem, between two electrodes, therefore produce the induced voltage of e=ir.Thus, the effect using differential amplifier is lost.
In addition, owing to having 2 ~ 3 joints between two electrodes, and between long have 2 ~ 3 leaves, therefore the current potential responded in upper electrode is compared, the current potential responded in lower electrode is larger, its difference is transfused to amplifier and is amplified, thus can only observe the waveform of AC power.
Therefore, according to the technology recorded in patent documentation 1, even if hypothesis changes biotic potential after people contacts plant, owing to being subject to the faradic obstruction from AC power in the open space of indoor, be therefore also difficult to the change observing biotic potential.
Summary of the invention
The present invention completes based on above-mentioned situation, its object is to provide a kind of and can use plant and reliably and practicably carry out the structure of the contactless operating circuit of work.
Contactless operating circuit structure of the present invention, by possessing the structure utilizing the change of the electrostatic capacitance that position produces near vicinity of plants position or human body to make the loaded work piece of regulation, thus can realize above-mentioned purpose.
Namely, contactless operating circuit structure of the present invention has the load controller applying supply voltage to load, this contactless operating circuit structure has following structure: possess when human body comes close to or in contact with plant, detects the change of the electrostatic capacitance that near human body position or vicinity of plants position produce and exports the detector of control signal; When receiving the control signal exported from detector, load controller applies supply voltage to load.
When contactless operating circuit structure is formed as structure as above, by utilize the electrostatic capacitance each other such as plant, human body, ground, AC power according to the contact between human body and plant or do not contact or near or away from and change, and to circulate in the mutual static induced currents such as plant, human body, ground, AC power according to this change and also to change this situation, thus can the action of control load.Thus, loaded work piece is made when people contacts plant.
In addition, for the detection of electric parameters change, comprise to inside plants or near position or inside of human body or near the electric parameters change that produces of position carry out the situation of direct-detection and carry out the situation of indirect detection.
At this, the situation of direct-detection refers in such as above-mentioned example as detecting the situation of the change of static induced current.This be due to the change of static induced current be the inside of human body or near the change of electric parameters that produces of position place.
On the other hand, the situation of indirect detection refers to such as to the situation that the return current flowing into high frequency electric source from ground via the second electrode detects.This due to return current be that electrostatic capacitance this electric parameters in position changes and the electric parameters changed along with near human body or plant.
In addition, contactless operating circuit structure of the present invention can be formed as following structure: possess the first electrode be installed on plant, cultivation soil, one or more object in container; To the AC power of this first electrode supply alternating voltage; Make the second electrode of the ground side end ground connection of this AC power; Detector is connected between AC power and the second electrode, and, human body near or contact plant time, detector detects the change of the electrostatic capacitance produced based on position near human body or vicinity of plants position and the AC power that produces and the second interelectrode curent change.
When contactless operating circuit structure is formed as structure as above, due to from the second electrode stream to the electric current of AC power because of the contact between human body and plant or do not contact or near or away from and change, therefore, it is possible to utilize above-mentioned situation and make loaded work piece.
In addition, the second electrode in the present invention comprises makes the directly grounded situation of ground connection side of AC power and the situation via ground connection such as detectors.
In addition, contactless operating circuit structure of the present invention can be formed as following structure: detector has: detection resistor, and it detects the electric current circulated between AC power and the second electrode; Diode, its voltage detection by electric current produced in detection resistor carries out rectification; Amplifier, it will be carried out amplification and exports as amplification voltage by the voltage after this diode rectification; Voltage comparator, it compares from the amplification voltage of this amplifier and the threshold voltage of expression assigned voltage value, and, when amplification voltage exports control signal higher than during threshold voltage.
When contactless operating circuit structure is formed as structure as above, the change of the electric current circulated between the second electrode and AC power can be detected, and according to this detection, load is reliably worked.
In addition, contactless operating circuit structure of the present invention can be formed as following structure: detector has bridge circuit, this bridge circuit has the first limit, the Second Edge that adjoins with this first limit, the 3rd limit adjoined with this Second Edge and four limit adjacent with the 3rd limit; AC power is connected between the tie point on the first limit of bridge circuit and the tie point of Second Edge and the 3rd limit and the 4th limit; First limit comprises the direct-to-ground capacitance of container; When the fluctuation of the voltage produced at the Second Edge of bridge circuit and the tie point place on the 3rd limit is transfused to as control signal, load controller applies supply voltage to load.
When contactless operating circuit structure is formed as structure as above, even if when forming detector by bridge circuit, also can detect the change due to the electric parameters that human body is close or contact plant produces, and make loaded work piece according to this testing result.
(invention effect)
As mentioned above, according to the present invention, human body near or contact plant time, detector can detect based on this near or contact the change of electric parameters produced, and when the change of this electric parameters being detected, load controller can make loaded work piece.
Accompanying drawing explanation
Fig. 1 is the sketch of the structure of the contactless operating circuit representing first embodiment of the invention.
Fig. 2 is the circuit diagram of the structure of the detector represented in the contactless operating circuit of the first execution mode.
Fig. 3 is the oscillogram of the waveform represented when return current to be detected in the current detecting resistor of detector.
Fig. 4 represents the oscillogram of the voltage produced in current detecting resistor being carried out the waveform after rectification.
Fig. 5 is the oscillogram representing the waveform after being amplified by the voltage shown in Fig. 4.
Fig. 6 is the oscillogram of the rheological parameters' change with time representing the signal exported from relay drive circuit.
Fig. 7 represents the outward appearance front view installing loaded vegetative state.
Fig. 8 is the circuit diagram of another structure representing detector.
Fig. 9 is the circuit diagram of the structure of the contactless operating circuit representing second embodiment of the invention.
(symbol description)
The contactless operating circuit of 1a, 1b
10 plants
20 cultivation soil
30 containers
40 first electrodes
50 high frequency electric sources
60 second electrodes
70a, 70b detector
71 stabilized power supply circuits
72 reference voltage regulating circuits
73 bridge circuits
80 load controllers
81 relay drive circuits
82 relays
90 loads
R1 current detecting resistor
D1 detection diode
A1 amplifier
A2 voltage comparator
Embodiment
Below, with reference to the accompanying drawings the preferred implementation of the contactless operating circuit that the present invention relates to is described.
(the first execution mode)
First, according to Fig. 1, the first execution mode of contactless operating circuit of the present invention is described.
Fig. 1 is the sketch of the structure of the contactless operating circuit representing present embodiment.
As shown in Figure 1, contactless operating circuit 1a has plant 10, cultivation soil 20, container 30, first electrode 40, high frequency electric source 50, second electrode 60, detector 70a, load controller 80 and load 90.
Plant 10 can use the plant of any suitable known at present, is not defined in the kind of regulation.
Cultivation soil 20 refers to the soil for cultivated plant 10.This cultivation soil 20 comprises such as compost or the improvement soil preparing soil or fertilizer with institute cultivated plant 10 accordingly such as native.And then cultivation soil 20 comprises the red beautiful soil be formulated in compost etc., deer natural pond soil, leaf mould and perlite (pearlite) etc.About this cultivation soil 20, be not defined in the kind of regulation yet.
Container 30 is the utensils putting into cultivation soil 20, specifically comprises such as flowerpot (pot) or cultivation box (planter) etc.Can also stone or sandstone etc. be put into except cultivation soil 20 in this container 30, and then, cultivated plant 10 in this container 30.
The shape of this container 30 does not limit especially.
In addition, about the material of this container 30, the material formation arbitrarily such as carbon, bique, plastics, pottery, glass, paper, stone material, timber also can be used.
In addition, as shown in Figure 1, preferably container 30 is placed on estrade, and, plastics plate etc. is arranged on and keeps enough electrical insulating properties relative to the floor of laying and away from the position of floor.
First electrode 40 is installed on one or two the above objects in plant 10, cultivation soil 20 and container 30, and this first electrode 40 applies side with the voltage of high frequency electric source 50 is connected.This first electrode 40 can use such as conductive material to be formed.
High frequency electric source (AC power) 50 applies the alternating voltage as high frequency voltage to the first electrode 40.This high frequency electric source 50 can output example as frequency be 50kHz, voltage is the high frequency of 10V.At this, why frequency is set to 50kHz be because: need the frequency far above this frequency 50Hz in order to the interference eliminated from the 50Hz of industrial power.
Second electrode 60 is installed on the ground plate 61 that is placed in floor.And the second electrode 60 is connected with the ground connection side of high frequency electric source 50 via detector 70a, thus make this ground side end ground connection.
The metal laminar parts (such as, aluminium foil etc.) of ground plate 61 for having certain area.Because this ground plate 61 has certain area, therefore, it is possible to make the value of the electrostatic capacitance Cg between floor and ground become large, thus return current (return current) is easily circulated.
But, also can save ground plate 61.Now, the second electrode 60 is directly installed in floor.In addition, when saving ground plate 61, also the second electrode 60 can not be directly installed in floor, but via the internal electrostatic electric capacity of the supply unit of detector 70a, load controller 80 and load 90 and ground ground connection.
Detector 70a is connected between the ground connection side of high frequency electric source 50 and the second electrode 60, and this detector 70a detects the change of the electric parameters produced between above-mentioned high frequency electric source 50 and the second electrode 60.
Specifically, detector 70a detects via the electrostatic capacitance Cg between ground plate 61 and ground from surface flow to the return current of high frequency electric source 50.
The particular circuit configurations of the 70a of this detector shown in Fig. 2.
As shown in Figure 2, detector 70a has current detecting resistor R1, detection diode D1, low value capacitor C1, gain-adjusted variable resistance R2, amplifier A1 and voltage comparator A2.
At this, current detecting resistor (detection resistor) R1 is connected between the ground connection side of high frequency electric source 50 and the second electrode 60, and it detects return current.
The voltage V resulting from current detecting resistor R1 two ends detected according to this detection
r1be as shown in Figure 3.That is, when human body away from or when not contacting plant 10, the waveform ((a) in Fig. 3) in little amplitude, on the other hand, when human body near or contact plant 10 time, the waveform ((b) in Fig. 3) in large amplitude.
The resistance value of this current detecting resistor R1 can be such as 10k Ω.
Detection diode D1 is connected between current detecting resistor R1 and amplifier A1.Specifically, detect and be connected with the one end of the current detecting resistor R1 being connected to the second electrode 60 with the anode (anode) of diode D1, and detection is connected with the other end of current detecting resistor R1 via low value capacitor C1 with the negative electrode (cathode) of diode D1.
This detection diode D1 is to the voltage V detected in current detecting resistor R1
r1carry out rectification.Now, the voltage V with diode D1 two ends is detected
d1be as shown in Figure 4.That is, the voltage ((b/2) in Fig. 4) when human body comes close to or in contact with plant 10 be greater than human body away from or do not contact plant 10 time voltage ((a/2) in Fig. 4).
In addition, as shown in Figure 3 and Figure 4, detection diode D1 is formed through in the present embodiment to voltage V
r1carry out the structure of rectification, but this rectification is not defined as halfwave rectifier.That is, because object is herein that the AC signal of detection is converted to direct current, therefore rectifier system also can be such as full-wave rectification, voltage multiplying rectifier and bridge rectifier etc.
Be coupled with one end of low value capacitor C1 be connected with the negative electrode of diode D1 with detecting, and its other end is connected with the other end of current detecting with resistor R1.
This low value capacitor C1 is the capacitor by means of only high frequency, and this low value capacitor C1 stops the flip-flop of gained after by detection diode D1 rectification to turn back in current detecting resistor R1, and makes voltage V
d1smoothing.
Gain-adjusted one end of variable resistance R2 is connected with the anode of detection diode D1, and its other end is connected with the negative electrode of diode D1 with detection.
The gain of variable resistance R2 resonance-amplifier A1 of this gain-adjusted.By arranging this gain-adjusted variable resistance R2, can be adjusted to and make the reference voltage V s as threshold voltage be positioned at the amplification voltage V exported from amplifier A1
a1in (a/2) ' and (b/2) ' between (with reference to Fig. 5).
Amplifier A1 is connected between detection diode D1 and voltage comparator A2.Specifically, about this amplifier A1, its in-phase input end is connected with the resistance-variable side of gain-adjusted with variable resistance R2, its inverting input is connected with the second electrode 60 via gain-adjusted one end with variable resistance R2, and its output is connected with the in-phase input end of voltage comparator A2.
This amplifier A1 according to by gain-adjusted with variable resistance R2 adjust after gain, by voltage V
d1carry out amplification and conduct amplification voltage V
a1export.
In addition, reference voltage V s also can use by human body away from or do not contact plant 10 time amplification voltage V
a1store the voltage preserved.
About voltage comparator A2, its in-phase input end is connected with the output of amplifier A1, its inverting input is connected with the electronic circuit component (not shown) of output reference voltage Vs, and its output is connected with the relay drive circuit 81 of load controller 80.
This voltage comparator A2 is by reference voltage V s and the amplification voltage V from amplifier A1
a1compare.Above-mentioned by the waveform of comparative voltage shown in Fig. 5.
When comparative result is for amplifying voltage V
a1higher than reference voltage V s time, amplify voltage V
a1for (b/2) ' time, from voltage comparator A2, export control signal V
a2.
On the other hand, when comparative result is for amplifying voltage V
a1lower than reference voltage V s time, amplify voltage V
a1for (a/2) ' time, control signal V can not be exported from voltage comparator A2
a2.
Load controller 80 is the control signal V according to carrying out self-detector 70a
a2the circuit of the action of control load 90, this load controller 80 is connected between detector 70a and load 90, and has relay drive circuit 81 and relay 82.
The input of relay drive circuit 81 is connected with the output of voltage comparator A2, and the output of relay drive circuit 81 is connected with relay 82.
This relay drive circuit 81 is according to the control signal V from voltage comparator A2
a2the operating time of adjustment relay 82.
The action of this relay drive circuit 81 shown in Fig. 6.As shown in Figure 6, when receiving control signal V
a2time relay drive circuit 81 start output action control signal ((s) in Fig. 6), and until continuously exporting this action control signal till the stipulated time (T).Then, after stipulated time T ((e) in Fig. 6), stop output action control signal.
About relay 82, its input is connected with the output of relay drive circuit 81, and its power end is connected with power supply socket, and its output is connected with load 90.
This relay 82, by during relay drive circuit 81 input action control signal, applies the voltage from power supply to load 90.
Load 90 is the electric components being fixed work when being applied in the voltage of regulation.
This load 90 can use the element that can be exported by the sensory perception of people such as implementing audio frequency output or video frequency output etc.
At this, concrete example as audio frequency output can enumerate the sound of the information such as simulated from plant 10, the sound such as the sound of the sound of the human or animal utilizing storage medium to store, the sound of wind, water, by the synthesized voice that electronic technology is synthesized, the sound of musical instrument or music, the sound of buzzer or doorbell, the sound of electronic musical box, and the onomatopoeia etc. of the sound of steam locomotive or the blast of whistle of ship etc.
On the other hand, the suitably luminous element such as arranging light emitting diode, miniature bulb make the entirety of above-mentioned luminous element or local luminous or flash of light and the still frame be shown in the display unit such as liquid crystal display or plasma display system or dynamic menu etc. in advance can be enumerated such as the concrete example of video frequency output.
And then, preferably in arranging above-mentioned load 90 and plant 10 integratedly.Such as, as shown in Figure 7, be arranged on the branch of plant or leaf etc. as the lamp decoration rope of the luminous element such as LED (light-emitting diode) of load 90 in the mode almost spreading all over plant 10 entirety and go up using in be configured with at substantially equal intervals and make it glisten, or the loud speaker of the limb etc. making to be installed on plant 10 is sounded.
Then, according to Fig. 1, the action of the contactless operating circuit of present embodiment is described.
In addition, as shown in Figure 1, electrostatic capacitance between plant 10 (leaf) and human body (hand) is set to Chl, electrostatic capacitance between container 30 and human body (body) is set to Csb, electrostatic capacitance between container 30 and ground plate 61 is set to Csg, electrostatic capacitance between human body and ground (ground) is set to Cbg, the electrostatic capacitance between ground and ground plate 61 is set to Cg.
High frequency electric source 50 is started, applies high frequency voltage Vhf from this high frequency electric source 50 to the first electrode 40 thus.
Human body away from or do not contact plant 10 state under, (voltage in Fig. 3 is a) to detect base voltage (base voltage) by detector 70a.
After this, when human body is close or contact plant 10, via the electrostatic capacitance Chl between this plant 10 (leaf) and human body (hand), static induced current is circulated in human body, and then this static induced current is via in the electrostatic capacitance Cbg inflow surface between human body and ground.
Then, return current (return current) is flowed into via the electrostatic capacitance Cg between ground plate 61 and ground from ground facing to high frequency electric source 50.
In the current detecting of detector 70a with in resistor R1, detect return current, and produce voltage V
r1.About this voltage V
r1, human body away from or do not contact plant 10 state under, the waveform of the little amplitude presented in voltage a in Fig. 3, on the other hand, human body near or contact plant 10 state under, the waveform in the large amplitude that voltage b in Fig. 3 presents.That is, the magnitude of voltage of voltage b is greater than the magnitude of voltage of voltage a.
This voltage V
r1rectification is carried out by detection diode D1, and by low value capacitor C1 by smoothing (with reference to Fig. 4).Voltage V after rectification
d1according to by the gain of gain-adjusted after variable resistance R2 adjustment, amplify in amplifier A1, and as amplifying voltage V
a1export.
By voltage comparator A2 by the amplification voltage V from amplifier A1
a1compare with reference voltage V s (with reference to Fig. 5).At this, as amplification voltage V
a1magnitude of voltage when being greater than the magnitude of voltage of reference voltage V s, from voltage comparator A2, export control signal V
a2.On the other hand, as amplification voltage V
a1magnitude of voltage when being less than the magnitude of voltage of reference voltage V s, control signal V can not be exported from voltage comparator A2
a2.
From the control signal V that voltage comparator A2 exports
a2be input in the relay drive circuit 81 of load controller 80, and, be transfused to this control signal V
a2while to relay 82 output action control signal.
In relay 82, by (T in Fig. 6) in during relay drive circuit 81 input action control signal, apply supply voltage to load 90.Thus, the action that load 90 puts rules into practice is made.
As mentioned above, the structure of contactless operating circuit according to the present embodiment, can utilize when human body near or contact plant time the value of return current that flow into high frequency electric source from the second electrode to change this situation, ON/OFF (starting/stopping) is implemented to the action of load and controls.
At this, return current why change be because: human body near or contact plant time and human body away from or do not contact plant time, the circuit structure that circulates for making static induced current (return current) is different.
Such as, human body away from or circuit structure when not contacting plant be: high frequency electric source 50-first electrode 40-container 30-electrostatic capacitance Csg-ground plate 61-second electrode 60-detector 70a-high frequency electric source 50.
On the other hand, human body near or contact plant time circuit structure be: the path of adding further first electrode 40-plant 10-electrostatic capacitance Chl-human body-electrostatic capacitance Cbg-electrostatic capacitance Cg-ground plate 61 in foregoing circuit structure.In addition, now electrostatic capacitance Csb also can have an impact.
The circuit structure circulated due to static induced current (return current) is as described above different, therefore human body near or contact plant time and human body away from or when not contacting plant detector can detect the return current of different value.Thereby, it is possible to detect that people is close or contact the situation of plant thus make loaded work piece exactly by detector.
In addition, in the contactless operating circuit 1a of present embodiment, by being provided with gain-adjusted variable resistance R2 in detector 70a, thus can adjust human body near or contact plant 10 and load 90 is worked time sensitivity.
Such as, when the resistance value of gain-adjusted variable resistance R2 diminishes, can only when the close together of plant 10 and human body, load 90 be worked, and not make load 90 work when plant 10 and human body distant.On the other hand, when the resistance value of gain-adjusted variable resistance R2 becomes large, not only load 90 can be made to work when the close together of plant 10 and human body, and load 90 also can be made to work when plant 10 and human body distant.
At this, the both end voltage of current detecting resistor R1 is carried out dividing potential drop by gain-adjusted variable resistance R2, and by the element that the voltage after this dividing potential drop exports to amplifier A1, wherein, the both end voltage of this current detecting resistor R1 produces because of circulation return current.
But, when the magnitude of voltage being transfused to the reference voltage V s in voltage comparator A2 is larger, need the voltage after utilizing gain-adjusted variable resistance R2 dividing potential drop is also raised.
And, when making the voltage after utilizing gain-adjusted variable resistance R2 dividing potential drop raise as above, even if when plant 10 and human body distant, load 90 also can be made to work.
Now, the appearance of following situation can be considered.
Such as, following Application way can be considered: namely, when before the contactless operating circuit 1a of present embodiment is arranged at shop or the place such as the front door of house, when client or visitor visiting and near or when contacting plant 10, make the LED as load 90 luminous, thus notify people's access.
But, when the voltage after utilizing gain-adjusted variable resistance R2 dividing potential drop is as above higher, even if when plant 10 and human body distant, load 90 also can be made to work.So, even if be not that client etc. comes to visit, and be the road that bicycle or vehicle etc. are laid before shop or house, LED also can be made luminous.So just cannot determine that the luminescence of this LED is the access of notifying client etc., or cause due to other reason.
Therefore, in the detector 70a shown in Fig. 8, by being provided with stabilized power supply circuit 71 and reference voltage regulating circuit 72, thus the magnitude of voltage of the reference voltage V s be transfused in voltage comparator A2 can be adjusted.
Specifically, stabilized power supply circuit 71 is the magnitude of voltage specified by the voltage step-down inputted from outside, and the circuit that the voltage will with fixed voltage value exports.
For this stabilized power supply circuit 71, such as linear regulator (linearregulator) or switching regulaor (switching regulator) etc. can be used.In addition, series controller (series regulator) or three end adjusters (3-terminal regulator) etc. can be used as linear regulator.
Reference voltage regulating circuit 72 is following circuit: namely, be connected between stabilized power supply circuit 71 and voltage comparator A2, be transfused to the voltage that exports from stabilized power supply circuit 71 and adjust the magnitude of voltage of this voltage, then the voltage after adjustment is exported as threshold voltage and reference voltage V s, and input to the circuit in voltage comparator A2.
For this reference voltage regulating circuit 72, such as thyristor (thyristor) or dc-dc (DC-to-DC converter) etc. can be used.Above-mentioned thyristor or dc-dc have the adjustment knob in dial dish type or slide block shape for adjusting magnitude of voltage, thus can adjust the value of input voltage artificially.
In the detector 70a possessing aforementioned stable power circuit 71 and reference voltage regulating circuit 72, by operating the adjustment knob be arranged in reference voltage regulating circuit 72, thus the magnitude of voltage of reference voltage V s can be adjusted.
And, by the magnitude of voltage of this reference voltage V s is adjusted to lower value, the voltage after utilizing gain-adjusted variable resistance R2 dividing potential drop can be reduced.Then, voltage V is amplified to make the value of the reference voltage V s shown in Fig. 5 become
a1(a/2) ' and (b/2) ' between and close to (b/2) ' the mode of value adjust the resistance value of gain-adjusted variable resistance R2.
Thus, such as can only human body near or make load 90 work when contacting plant 10, and do not make load 90 work when plant 10 and human body distant.And, in the above example, can only make the LED as load 90 luminous when client etc. is visiting, and bicycle etc. through out-of-date wait other reasons under do not make LED luminous.
(the second execution mode)
Then, according to Fig. 9, the second execution mode of contactless operating circuit of the present invention is described.
Fig. 9 is the circuit diagram of the structure of the contactless operating circuit representing present embodiment.
Present embodiment is compared with the first execution mode, different in the structure of detector.Namely, relative to being formed as in the first embodiment: utilize detection DC resistor measurement return current, utilize detection diode pair to detect voltage and carry out rectification, amplifier is utilized to amplify, voltage comparator is utilized to detect the situation that return current changes, utilize relay etc. to make the structure of loaded work piece, and be formed in the present embodiment to utilize bridge circuit (bridge circuit) to detect the structure of the situation of change of return current.Other structure is identical with the first execution mode.
And, give identical symbol for the structure identical with Fig. 1 etc. in fig .9, and omit its detailed description.
As shown in Figure 9, the contactless operating circuit 1b of present embodiment has plant 10, cultivation soil 20, container 30, first electrode 40, detector 70b, load controller 80 and load 90.
At this, detector 70b has bridge circuit 73 (CR (Condenser Resistor, capacitance resistance) AC bridge circuit).
Bridge circuit 73 have the direct-to-ground capacitance Cs being inserted into container 30 the first limit, be connected with resistance Rb1 Second Edge, be connected with the 3rd limit of resistance Rb2 and be connected with the 4th limit of the capacitor Cb1 as fixing standard capacitor.
The equilibrium condition of this bridge circuit 73 is Cb1 × Rb2=Cs × Rb1.
In addition, owing to changing to some extent according to a number of plant 10 or size, therefore by be made up of variable resistance in resistance Rb1 or resistance Rb2 any one and maintain balance, thus suppress base current (base current).
In addition, in bridge circuit 73, the tie point of the first limit and Second Edge is set to a12, the tie point on Second Edge and the 3rd limit is set to a23, the tie point on the 3rd limit and the 4th limit is set to a34, the tie point on the 4th limit and the first limit is set to a41.
And then, between an a12 and some a34, be connected with AC power S.
Then, some a12 is connected with the first electrode 40, and some a23 is connected with load controller 80, and some a41 is grounded.
The fluctuation of the voltage e that load controller (surge detection circuit) 80 test point a23 place produces, wherein, some a23 is the Second Edge of bridge circuit 73 and the tie point on the 3rd limit.
The structure of this load controller 80 can be identical with the structure of the load controller 80 in the first execution mode.That is, the control signal V in the first execution mode
a2be equivalent to voltage e, when inputting this voltage e after this voltage e (generation) fluctuation, relay drive circuit 81 is to relay 82 output action control signal.
In relay 82, by (T in Fig. 6) in during relay drive circuit 81 input action control signal, apply supply voltage to load 90.Make the action that load 90 puts rules into practice thus.
Then, according to Fig. 9, the action of the contactless operating circuit of present embodiment is described.
Human body away from or when not contacting plant 10, bridge circuit 73 in poised state, and becomes 0 at an a23 place voltage e.Therefore, load controller 80 does not carry out work, and load 90 does not also carry out work.
On the other hand, when human body is close or contact plant 10, the electrostatic capacitance Ch between human body (hand) and plant 10 (leaf) is added in Cs, thus makes bridge circuit 73 in unbalanced state.Thus, voltage e is revealed as unbalance voltage and becomes contact detection voltage, thus by the control of load controller 80, load 90 is worked.
In addition, be formed in the bridge circuit 73 shown in Fig. 9: resistance Rb1 is connected in Second Edge, resistance Rb2 is connected in the 3rd limit, capacitor Cb1 is connected to the structure in the 4th limit, but be not limited to said structure, above-mentioned resistance Rb1, resistance Rb2 and capacitor Cb1 also can be connected in any one limit in the first limit in bridge circuit 73, Second Edge, the 3rd limit and the 4th limit.In addition, also can be formed as: in the structure of in series connection or in parallel contact resistance Rb1 or resistance Rb2 and capacitor Cb1 from a limit in four limits of the first limit to the 4th limit.And, even if when being formed said structure, also require human body away from or do not contact plant 10 time, this bridge circuit 73 in poised state, and becomes 0 at an a23 place voltage e.
In addition, about the resistance Rb1 be connected in bridge circuit 73, resistance Rb2, the variable resistance that can change its resistance value can be used.And then, the variable capacitor that can change its electrostatic capacitance can be used about capacitor Cb1.
And, by change be used as resistance Rb1, resistance Rb2 variable resistance resistance value and be used as the electrostatic capacitance of variable capacitor of capacitor Cb1, thus can adjust human body near or contact plant 10 and load 90 is worked time sensitivity.
Such as, when with the electrostatic capacitance of the resistance value of the mode adjusting resistance Rb1 making the value of electrostatic capacitance Cs become large, resistance Rb2 and capacitor Cb1, load 90 is made to work when electrostatic capacitance Ch is larger.Therefore, it is possible to make load 90 work when the close together of plant 10 and human body, and object (such as bicycle etc.) through from plant 10 remotely time, do not make load 90 work.
On the other hand, when with the electrostatic capacitance of the resistance value of the mode adjusting resistance Rb1 making the value of electrostatic capacitance Cs diminish, resistance Rb2 and capacitor Cb1, load 90 is made to work when electrostatic capacitance Ch is less.Therefore, load 90 can not only be worked when the close together of plant 10 and human body, and load 90 also can be made to work when plant 10 and human body distant.
As mentioned above, the structure of contactless operating circuit according to the present embodiment, even if when forming detector by bridge circuit, also can detect that human body is close or contact the situation of plant thus make loaded work piece exactly.
Especially, structure due to the contactless operating circuit of present embodiment is the structure employing bridge circuit in a detector, therefore, the variable quantity not containing base current, the voltage namely only produced because of coming close to or in contact with of hand can be extracted, and the slight change of the switch motion point caused because of the change of supply voltage or environment temperature can be ignored.
Above, preferred implementation for contactless operating circuit structure of the present invention is illustrated, but the contactless operating circuit structure that the present invention relates to is not limited to above-mentioned execution mode, certainly can carries out various change within the scope of the invention and implement.
Such as, be formed in the above-described embodiment: plant, the first electrode, the second electrode, high frequency electric source, detector, load controller, load etc. are respectively provided with the structure of, but above-mentioned each parts are not limited to respectively be provided with one, also can be respectively equipped with multiple.
(industrial utilizability)
Due to the present invention be human body near or contact plant time make the invention of loaded work piece, therefore the present invention can be used in using lamp decoration (LED etc.) as plant decoration utensil during load, using audio output device as output-controlling device during load and using motor in driving control device during load etc.
Claims (6)
1. a contactless operating circuit structure, it possesses the load controller applying supply voltage to load, and the feature of described contactless operating circuit structure is,
Possess detector, its human body near or contact plant time, detect the change of the electrostatic capacitance that near described human body position or described vicinity of plants position produce and export control signal;
When receiving the described control signal exported from described detector, described load controller applies described supply voltage to described load.
2. contactless operating circuit structure as claimed in claim 1, is characterized in that,
Described contactless operating circuit structure possesses:
First electrode, it is installed on one or more the object in described plant, cultivation soil, container,
AC power, it applies alternating voltage to described first electrode, and
Second electrode, it makes the ground side end ground connection of described AC power;
Described detector is connected between described AC power and described second electrode, and, when described human body near or when contacting described plant, described detector detects the change of the electrostatic capacitance produced based on position near described human body or described vicinity of plants position and the described AC power that produces and described second interelectrode curent change.
3. contactless operating circuit structure as claimed in claim 2, is characterized in that,
Described detector has:
Detection resistor, it detects the electric current circulated between described AC power and described second electrode;
Diode, its voltage produced in described detection resistor the detection by described electric current carries out rectification;
Amplifier, it will be carried out amplification and exports as amplification voltage by the voltage after described diode rectification; And
Voltage comparator, it compares from the described amplification voltage of described amplifier and the threshold voltage of expression assigned voltage value, and at described amplification voltage higher than exporting described control signal during described threshold voltage.
4. contactless operating circuit structure as claimed in claim 3, is characterized in that,
Described detector has:
Stabilized power supply circuit, it exports fixing voltage; With
Reference voltage regulating circuit, it inputs the voltage exported from described stabilized power supply circuit, exports after the magnitude of voltage of this voltage of adjustment as described threshold voltage to described voltage comparator.
5. contactless operating circuit structure as claimed in claim 1, is characterized in that,
Described detector has bridge circuit;
The Second Edge that described bridge circuit has the first limit, adjoin with described first limit, the 3rd limit adjoined with described Second Edge and four limit adjacent with described 3rd limit;
Described AC power is connected to described first limit of described bridge circuit and the tie point of Second Edge and between described 3rd limit and the tie point on the 4th limit;
Described first limit comprises the direct-to-ground capacitance of described container;
When the fluctuation of the voltage produced when the tie point place on the described Second Edge of described bridge circuit and described 3rd limit is transfused to as described control signal, described load controller applies described supply voltage to described load.
6. contactless operating circuit structure as claimed in claim 5, is characterized in that,
Be connected to any one in described first limit of described bridge circuit, described Second Edge, described 3rd limit and described 4th limit with the resistance on top for variable resistor;
Be connected to any one in described first limit of described bridge circuit, described Second Edge, described 3rd limit and described 4th limit with the capacitor on top for variable capacitor.
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| CN201310652280.XA CN104703322A (en) | 2013-12-05 | 2013-12-05 | Non-contact working circuit structure |
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| CN201310652280.XA CN104703322A (en) | 2013-12-05 | 2013-12-05 | Non-contact working circuit structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106601219A (en) * | 2016-03-25 | 2017-04-26 | 浙江大学 | Musical instrument for plant music playing and control method of musical instrument |
| CN108873080A (en) * | 2017-05-16 | 2018-11-23 | 商升特公司 | Single sensor proximity detector |
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| US20050184876A1 (en) * | 2004-02-20 | 2005-08-25 | Tetsuo Tokudome | Human body detection sensor |
| JP2007115655A (en) * | 2006-06-09 | 2007-05-10 | Takenaka Teien Ryokka:Kk | Plant switch device |
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Effective date of registration: 20160922 Address after: Japan's Tokyo Edogawa funabori 7-11-17 Applicant after: Takenaka Kozaburo Address before: Japan's Tokyo Edogawa funabori 7-11-17 Applicant before: Takenaka Kozaburo Applicant before: Abe Shinichiro |
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