CN203596955U

CN203596955U - Proximity working current structure

Info

Publication number: CN203596955U
Application number: CN201320797332.8U
Authority: CN
Inventors: 阿部真一郎
Original assignee: Individual
Current assignee: Takenaka Kozaburo
Priority date: 2013-12-05
Filing date: 2013-12-05
Publication date: 2014-05-14
Anticipated expiration: 2023-12-05

Abstract

A proximity working current structure provided by the utility model is capable of working reliably and practically by using a plant. The proximity working current structure comprises a detector (70a) and a load controller (80). When a human body approaches or contact the plant (10), the detector (70a) detects out the change of electrostatic capacitance of the position close to the human body or close to the plant and outputs a control signal; and after receiving the control signal, the load controller (80) applies a power supply voltage to a load (90). The load controller (80) is connected between the detector (70a) and the load (90).

Description

Contactless operating circuit structure

Technical field

The utility model carries out the structure of the contactless operating circuit (proximity working circuit) of work while relating in human body contact or near plant.

Background technology

In the Urban Space standing in great numbers at buildings such as high buildings and large mansions, be planted in the plant of locating in pavement or public open space etc. and can bring unthinkable tremendous influence to people.For example, the result for the treatment of having is all the time all noticeable, but also also has following spiritual effect:, as long as see that plant mood will stablize calmness, relax fear or anger and then light relieving fatigue etc.In addition, from make by above-mentioned variation Blood pressure drop or of flaccid muscles, make the aspect such as the increase of α ripple, beats minimizing brain wave, also there is the effect of loosening body and mind.

Owing to expecting above-mentioned effect mentally, on health, can see equal sign of introduced plant energetically in recent years such as each family or office, shop.

Thus, following technology has also been proposed:, can by people feel carry out the variation that perception plant produces because of outside stimulus, thereby can seek the technology (for example,, with reference to patent documentation 1) that same plant exchanges.

This technology is conceived in the time that plant is subject to from outside stimulation its inner biotic potential this situation that changes, and detects the variation of this biotic potential, and sets it as circuits for triggering (trigger) and make the loaded work piece of LED or buzzer etc.

Patent documentation 1: No. 9-271263, Japanese communique, Unexamined Patent

But, distinguished that by experiment above-mentioned prior art is following technology:, above-mentioned prior art is not configured to so-called those skilled in the art can obtain the degree as the technique effect of object repeatedly constantly.

, applicant attempts implementing " with the conversational system of plant " according to disclosed content in patent documentation 1.

Particularly, implement according to following order.First, prepare potted plant, in bottom and the middle part installing electrodes of its stem, thereby attempt measuring the current potential producing between the electrode at bottom and middle part.Alleviate the induction from industrial alternating electromotive force 100V power line with the differential amplifier of high power, then use 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 away from the action of plant.

Consequently, the waveform that uses oscilloscope tube to observe is only the waveform of the 50Hz of the induction based on from industrial AC power, and does not observe the signal of similar biotic potential.

Can consider following situation about its reason.,

Betide on the whole leaf of plant from the induction of AC power, induced current i leads to and falls on ground via the distributed capacitance Ce between flowerpot and ground along stemflow, but owing to there is resistance r in this stem, therefore between two electrodes, produce the induced voltage of e=ir.Thus, lose the effect that uses differential amplifier.

In addition, owing to having 2～3 joints between two electrodes, and between long have 2～3 leaves, therefore compare the current potential of responding in upper electrode, the current potential of responding in lower electrode is larger, its difference is transfused to amplifier and is amplified, thereby can only observe the waveform of AC power.

Therefore,, according to the technology of recording in patent documentation 1, even if hypothesis has changed biotic potential after people contacts plant, due to the faradic obstruction being subject to from AC power, therefore be also difficult to observe the variation of biotic potential in indoor open space.

Utility model content

The utility model completes based on above-mentioned situation, and its object is to provide a kind of 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 utility model, utilizes near the variation of the electrostatic capacitance that position produces near position plant or human body to make the structure of the loaded work piece of regulation by possessing, thereby can realize above-mentioned purpose.

; contactless operating circuit structure of the present utility model has the load controller that applies supply voltage to load; this contactless operating circuit structure has following structure: possess in the time that human body comes close to or in contact with plant; detect the variation of the electrostatic capacitance producing near position near position human body or plant and export the detector of control signal and in the time receiving the control signal of exporting from detector, apply the load controller of supply voltage to load; Load controller is connected between detector and load.

In the time that 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 between human body and plant contact or do not contact or near or away from changing, and circulate in the mutual static induced currents such as plant, human body, ground, AC power this situation that also changes according to this variation, thereby action that can control load.Thus, in the time that contacting plant, people can make loaded work piece.

In addition, the detection changing for electric parameters, comprise to inside plants or near it position or inside of human body or near electric parameters that it, position produces change the situation of carrying out the situation of direct-detection and carrying out indirect detection.

At this, the situation of direct-detection refers in above-mentioned example for example the situation of the variation for detecting static induced current.This is because the variation of static induced current is in the inside of human body or near the variation of the electric parameters that it, place, position produces.

On the other hand, the situation of indirect detection refers to situation about for example detecting flow into the return current of high frequency electric source from ground via the second electrode.This is because return current is along with near the electric parameters changing that changes of this electric parameters of position electrostatic capacitance human body or plant.

In addition, contactless operating circuit structure of the present utility model can be formed as following structure: possess be installed in plant, the first electrode on soil for cultivation, one or more object in container; Supply with the AC power of alternating voltage to this first electrode; Make the second electrode of the ground connection side ground connection of this AC power; Detector is connected between AC power and the second electrode, and, human body near or contact when plant, detector detects the variation of the electrostatic capacitance producing based near position near position human body or plant and the AC power and the second interelectrode curent change that produce.

In the time that contactless operating circuit structure is formed as structure as above, due to the electric current from the second electrode stream to AC power because of the contact between human body and plant or do not contact or near or away from changing, therefore can utilize above-mentioned situation and make loaded work piece.

In addition, the second electrode in the utility model comprises the directly grounded situation of ground connection side of AC power and the situation via ground connection such as detectors of making.

In addition, contactless operating circuit structure of the present utility model can be formed as following structure: detector has: detection resistor, and its detection circulates in the electric current between AC power and the second electrode; Diode, it will carry out rectification in detection with the voltage producing in resistor by the detection of electric current; Amplifier, it will be amplified by the voltage after this diode rectification also as amplifying Voltage-output; Voltage comparator, it is by the amplification voltage from this amplifier and represent that the threshold voltage of assigned voltage value compares, and, in the time amplifying voltage higher than threshold voltage, export control signal; Detection is connected between AC power and the second electrode with resistor; Diode is connected in and detects with between resistor and amplifier; Amplifier is connected between diode and voltage comparator.

In the time that contactless operating circuit structure is formed as structure as above, can detects the variation that circulates in the electric current between the second electrode and AC power, and according to this detection, load be worked reliably.

In addition, contactless operating circuit structure of the present utility model can be formed as following structure: detector has bridge circuit, this bridge circuit have first side, with the Second Edge of this first side adjacency, with the 3rd limit of this Second Edge adjacency and with the 4th limit of the 3rd limit adjacency; AC power is connected between the first side of bridge circuit and the tie point of Second Edge and the 3rd limit and the tie point on the 4th limit; The direct-to-ground capacitance that first side comprises container; In the time that the fluctuation of the voltage producing 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.

In the time that contactless operating circuit structure is formed as structure as above, even if formed by bridge circuit in the situation of detector, also can detect because human body is close or the variation of the electric parameters that contact plant produces, and make loaded work piece according to this testing result.

(utility model effect)

As mentioned above, according to the utility model, human body near or contact when plant, detector can detect based on this near or the variation of the electric parameters that produces of contact, and in the time the variation of this electric parameters being detected, load controller can make loaded work piece.

Accompanying drawing explanation

Fig. 1 is the sketch that represents the structure of the contactless operating circuit of the utility model the first execution mode.

Fig. 2 is the circuit diagram that represents the structure of the detector in the contactless operating circuit of the first execution mode.

The oscillogram of the waveform that Fig. 3 is the current detecting that is illustrated in detector when return current being detected in resistor.

Fig. 4 represents to carry out the oscillogram of the waveform after rectification with the voltage producing in resistor in current detecting.

Fig. 5 is the oscillogram of the waveform after representing the voltage shown in Fig. 4 to amplify.

Fig. 6 is the oscillogram that represents the rheological parameters' change with time of the signal of exporting from relay drive circuit.

Fig. 7 is the outward appearance front view that represents to install loaded vegetative state.

Fig. 8 is the circuit diagram that represents another structure of detector.

Fig. 9 is the circuit diagram that represents the structure of the contactless operating circuit of the utility model the second execution mode.

(symbol description)

The contactless operating circuit of 1a, 1b

10 plants

20 soil for cultivation

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

The preferred implementation of the contactless operating circuit relating to for the utility model with reference to the accompanying drawings below, describes.

(the first execution mode)

First, describe for the first execution mode of contactless operating circuit of the present utility model according to Fig. 1.

Fig. 1 is the sketch that represents the structure of the contactless operating circuit of present embodiment.

As shown in Figure 1, contactless operating circuit 1a has plant 10, cultivation soil 20, container 30, the first electrode 40, high frequency electric source 50, the second electrode 60, detector 70a, load controller 80 and load 90.

Plant 10 can be used the plant of at present known any suitable, is not defined in the kind of regulation.

Soil 20 soil that refer to for cultivated plant 10 for cultivation.This cultivation with soil 20 comprise such as compost or improvement with soil etc. and institute cultivated plant 10 prepare accordingly the soil that has soil or fertilizer.And then cultivation comprises red jade soil, deer natural pond soil, leaf mould and the perlite (pearlite) etc. that are formulated in compost etc. with soil 20.About soil 20 for this cultivation, be not defined in the kind of regulation yet.

Container 30 is to put into the utensil of cultivation with soil 20, specifically comprises such as flowerpot (pot) or cultivation box (planter) etc.In this container 30, can also put into stone or sandstone etc. except cultivating with native 20, 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, also can use the material formation arbitrarily such as carbon, bique, plastics, pottery, glass, paper, stone material, timber.

In addition, as shown in Figure 1, preferably container 30 is placed on estrade, and, plastics plate etc. is arranged on respect to the floor of laying and keeps enough electrical insulating properties and the position away from floor.

The first electrode 40 is installed in plant 10, cultivation with on one or two the above objects in soil 20 and container 30, and this first electrode 40 applies side with the voltage of high frequency electric source 50 and is connected.This first electrode 40 can use for example conductive material to form.

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 the high frequency that 50kHz, voltage are 10V.At this, why frequency is made as to 50kHz and is because: need to be far above the frequency of this frequency 50Hz in order to eliminate from the interference of the 50Hz of industrial power.

The second electrode 60 is installed on the ground plate 61 being placed in floor.And the second electrode 60 is connected with the ground connection side of high frequency electric source 50 via detector 70a, thereby make this ground connection side ground connection.

Ground plate 61 for example, for having the laminar parts of metal system (, aluminium foil etc.) of certain area.Because this ground plate 61 has certain area, therefore can make the value of the electrostatic capacitance Cg between floor and ground become large, thereby 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, in the time saving ground plate 61, also can the second electrode 60 be directly installed in floor, but via inside electrostatic capacitance and the ground ground connection of the supply unit of detector 70a, load controller 80 and load 90.

Detector 70a is connected between the ground connection side and the second electrode 60 of high frequency electric source 50, and this detector 70a detects the variation of the electric parameters producing between above-mentioned high frequency electric source 50 and the second electrode 60.

Particularly, detector 70a detects via the electrostatic capacitance Cg between ground plate 61 and ground the return current from surface flow to 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, detects with diode D1, low value capacitor C1, gain-adjusted variable resistance R2, amplifier A1 and voltage comparator A2.

At this, resistor for current detecting (detection resistor) R1 is connected between the ground connection side and the second electrode 60 of high frequency electric source 50, and it detects return current.

The voltage V that results from current detecting use resistor R1 two ends detecting according to this detection _r1be as shown in Figure 3.That is, when human body away from or while not contacting plant 10, be the waveform ((a) in Fig. 3) of little amplitude, on the other hand, when human body near or when contact plant 10, be the waveform ((b) in Fig. 3) of large amplitude.

This current detecting can be for example 10k Ω by the resistance value of resistor R1.

Detection is connected between current detecting resistor R1 and amplifier A1 with diode D1.Particularly, detection is connected with one end of the current detecting resistor R1 that is connected to the second electrode 60 with the anode (anode) of diode D1, uses the negative electrode (cathode) of diode D1 to be connected with the other end of current detecting resistor R1 via low value capacitor C1 and detect.

This detection with diode D1 to the voltage V detecting in current detecting resistor R1 _r1carry out rectification.Now, detect the voltage V with diode D1 two ends _d1be as shown in Figure 4.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 voltage ((a/2) in Fig. 4) while not contacting plant 10.

In addition, as shown in Figure 3 and Figure 4, be formed as in the present embodiment using diode D1 to voltage V by detection _r1carry out the structure of rectification, still, this rectification is not defined as halfwave rectifier.,, because object is herein that the AC signal of detection is converted to direct current, therefore rectifier system can be also such as full-wave rectification, voltage multiplying rectifier and bridge rectifier etc.

One end of the low value capacitor C1 of coupling use is connected with the negative electrode of diode D1 with detection, and its other end is connected with the other end of resistor R1 with current detecting.

This low value capacitor C1 is the capacitor by high frequency only, and this low value capacitor C1 stop use by detections diode D1 rectification afterwards the flip-flop of gained turn back in current detecting use resistor R1, and make voltage V _d1smoothing.

One end of variable resistance R2 and the anodic bonding of detection diode D1 for gain-adjusted, and its other end is connected with the negative electrode of diode D1 with detection.

The gain of variable resistance R2 resonance-amplifier A1 for this gain-adjusted.Make to be positioned at from the amplification voltage V of amplifier A1 output as the reference voltage V s of threshold voltage by this gain-adjusted variable resistance R2 being set, can being adjusted to _a1in (a/2) ' and (b/2) ' between (with reference to Fig. 5).

Amplifier A1 is connected in and detects with between diode D1 and voltage comparator A2.Particularly, about this amplifier A1, its in-phase input end is connected with the resistance-variable side of variable resistance R2 with gain-adjusted, its inverting input is connected with the second electrode 60 with one end of variable resistance R2 via gain-adjusted, and its output is connected with the in-phase input end of voltage comparator A2.

This amplifier A1 is according to the gain after being adjusted with variable resistance R2 by gain-adjusted, by voltage V _d1amplify and conduct amplification voltage V _a1output.

In addition, reference voltage V s also can use by human body away from or amplification voltage V while not contacting plant 10 _a1the voltage that storage is 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 with from the amplification voltage V of amplifier A1 _a1compare.The above-mentioned waveform that is compared voltage shown in Fig. 5.

When comparative result is for amplifying voltage V _a1during higher than reference voltage V s, amplify voltage V _a1for (b/2) ' time, control signal V from voltage comparator A2, exported _a2.

On the other hand, when comparative result is for amplifying voltage V _a1during lower than reference voltage V s, amplify voltage V _a1for (a/2) ' time, control signal V can from voltage comparator A2, do not exported _a2.

Load controller 80 is according to the control signal V that carrys 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 _a2adjust the operating time of 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 through the stipulated time (T) continuously export this action control signal.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 socket with power supply, and its output is connected with load 90.

This relay 82, by during relay drive circuit 81 input action control signals, applies the voltage from power supply to load 90.

Load 90 is the electric components that are fixed work in the time being applied in the voltage of regulation.

This load 90 can be used the element that can be exported by people's sense organ perception of for example implementing audio frequency output or video output etc.

At this, concrete example as audio frequency output can be enumerated the sound of for example simulating from the information of plant 10, utilize the human or animal's that storage medium stores sound, the sound such as sound, the sound of water of wind, by the synthetic synthesized voice of electronic technology, the sound of musical instrument or music, the sound of buzzer or doorbell, the sound of electronic musical box, and the onomatopoeia of the sound of steam locomotive or the blast of whistle of ship etc. etc.

On the other hand, for example can enumerate in advance suitably the luminous element such as arranging light emitting diode, miniature bulb and make the overall or local luminous of above-mentioned luminous element or glisten and be shown in still frame or the dynamic menu etc. in the display unit such as liquid crystal display or plasma display system as the concrete example of video output.

And then, be preferably above-mentioned load 90 and plant 10 are set integratedly.For example, as shown in Figure 7, roughly equally spaced dispose the branch or the leaf etc. that are arranged on plant almost to spread all over the mode of plant 10 entirety as the lamp decoration rope of the luminous elements such as the LED (light-emitting diode) of load 90 and go up and make it to glisten being, or the loud speaker that makes to be installed on the limb etc. of plant 10 is sounded.

Then, describe for the action of the contactless operating circuit of present embodiment according to Fig. 1.

In addition, as shown in Figure 1, electrostatic capacitance between plant 10 (leaf) and human body (hand) is made as to Chl, electrostatic capacitance between container 30 and human body (body) is made as to Csb, electrostatic capacitance between container 30 and ground plate 61 is made as to Csg, electrostatic capacitance between human body and ground (ground) is made as to Cbg, the electrostatic capacitance between ground and ground plate 61 is made as to Cg.

High frequency electric source 50 is started, apply 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 under the state of plant 10, (voltage in Fig. 3 is a) to detect base voltage (base voltage) by detector 70a.

After this, in the time that 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, flow into return current (return current) via the electrostatic capacitance Cg between ground plate 61 and ground from ground facing to high frequency electric source 50.

Use in resistor R1 in the current detecting of detector 70a, detect return current, and produce voltage V _r1.About this voltage V _r1, human body away from or do not contact under the state of plant 10, be the waveform of the little amplitude that in Fig. 3, voltage a presents, on the other hand, human body near or the state of contact plant 10 under, be the waveform of the large amplitude that in Fig. 3, voltage b presents., the magnitude of voltage of voltage b is greater than the magnitude of voltage of voltage a.

This voltage V _r1use diode D1 to carry out rectification by detection, and by smoothedization of low value capacitor C1 (with reference to Fig. 4).Voltage V after rectification _d1according to the gain after being regulated with variable resistance R2 by gain-adjusted, in amplifier A1, amplify, and as amplifying voltage V _a1output.

By voltage comparator A2 by the amplification voltage V from amplifier A1 _a1compare (with reference to Fig. 5) with reference voltage V s.At this, when amplifying voltage V _a1magnitude of voltage while 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, when amplifying voltage V _a1magnitude of voltage while being less than the magnitude of voltage of reference voltage V s, can from voltage comparator A2, not export control signal V _a2.

From the control signal V of voltage comparator A2 output _a2be input in the relay drive circuit 81 of load controller 80, and, be transfused to this control signal V _a2time to relay 82 output action control signals.

In relay 82, by (T Fig. 6) in during relay drive circuit 81 input action control signals, apply supply voltage to load 90.Thus, the action that load 90 is put rules into practice.

As mentioned above, according to the structure of the contactless operating circuit of present embodiment, can utilize when human body near or the contact value that flow into the return current high frequency electric source from the second electrode when plant this situation that changes, the action of load is implemented to ON/OFF (starting/stopping) and controls.

At this, return current why change be because: human body near or contact when plant and human body away from or while not contacting plant, for making the circuit structure difference of static induced current (return current) circulation.

For example, human body away from or circuit structure while not contacting plant be: high frequency electric source 50-first electrode 40-container 30-electrostatic capacitance Csg-ground plate 61-the second electrode 60-detector 70a-high frequency electric source 50.

On the other hand, human body near or the circuit structure of contact when plant be: the path of further adding 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 exert an influence.

Because the circuit structure of the circulation of static induced current (return current) as described above use is different, therefore human body near or when contact plant and human body away from or while not contacting plant detector can detect the return current of different value.Thus, thus can by detector detect exactly people near or the situation that contacted plant make loaded work piece.

In addition, in the contactless operating circuit 1a of present embodiment, by be provided with gain-adjusted variable resistance R2 in detector 70a, thus can adjust human body near or contact plant 10 and sensitivity when load 90 is worked.

For example, in the time that gain-adjusted diminishes by the resistance value of variable resistance R2, can only in the time of the close together of plant 10 and human body, load 90 be worked, and not make load 90 work in the time of plant 10 and human body distant.On the other hand, in the time that gain-adjusted becomes large by the resistance value of variable resistance R2, not only in the time of the close together of plant 10 and human body, can make load 90 work, and also can make load 90 work in the time of plant 10 and human body distant.

At this, gain-adjusted is that the both end voltage of current detecting resistor R1 is carried out to dividing potential drop with variable resistance R2, and the element that the voltage after this dividing potential drop is exported to amplifier A1, wherein, this current detecting produces because circulation return current by the both end voltage of resistor R1.

But, in the time that the magnitude of voltage that is transfused to the reference voltage V s in voltage comparator A2 is larger, need to make to utilize the voltage after gain-adjusted variable resistance R2 dividing potential drop also to raise.

And, in the time making as above to utilize voltage after gain-adjusted variable resistance R2 dividing potential drop to raise, even in the case of plant 10 and human body distant, also can make load 90 work.

Now, can consider the appearance of following situation.

For example, can consider the following method of utilizing:, in the case of before the contactless operating circuit 1a of present embodiment is arranged to shop or the front door of house etc. locates, when client or visitor are visiting and near or while having contacted plant 10, make as the LED of load 90 luminous, thereby notice have people to access.

But, in the time utilizing as above voltage after gain-adjusted variable resistance R2 dividing potential drop higher, even in the case of plant 10 and human body distant, also can make load 90 work.So, even if be not that client etc. is visiting, and just bicycle or vehicle etc. through before shop or house, lay road time, also can make LED luminous.So just cannot determine this LED luminous be the access that notice has client etc., or because other reason causes.

Therefore,, in the detector 70a shown in Fig. 8, by being provided with stabilized power supply circuit 71 and reference voltage regulating circuit 72, thereby can adjust the magnitude of voltage that is transfused to the reference voltage V s in voltage comparator A2.

Particularly, stabilized power supply circuit 71 is to be the magnitude of voltage of regulation from the voltage step-down of outside input, and will have the circuit of Voltage-output of fixed voltage value.

For this stabilized power supply circuit 71, can use such as linear regulator (linear regulator) or switching regulaor (switching regulator) etc.In addition, can use series controller (series regulator) or three end adjusters (3-terminal regulator) etc. as linear regulator.

Reference voltage regulating circuit 72 is following circuit:, be connected between stabilized power supply circuit 71 and voltage comparator A2, be transfused to the voltage of exporting from stabilized power supply circuit 71 and adjust the magnitude of voltage of this voltage, then the voltage after adjusting is that reference voltage V s exports as threshold voltage, and inputs to the circuit in voltage comparator A2.

For this reference voltage regulating circuit 72, can use such as thyristor (thyristor) or DC-DC transducer (DC-to-DC converter) etc.Above-mentioned thyristor or DC-DC transducer have the adjustment knob that is dialing dish type or slide block shape for adjusting magnitude of voltage, thereby can adjust artificially the value of input voltage.

Possessing in the detector 70a of aforementioned stable power circuit 71 and reference voltage regulating circuit 72, be arranged at the adjustment knob in reference voltage regulating circuit 72 by operation, thereby can adjust the magnitude of voltage of reference voltage V s.

And, by the magnitude of voltage of this reference voltage V s being adjusted into lower value, can reducing the voltage utilizing after gain-adjusted variable resistance R2 dividing potential drop.Then, so that becoming, the value of the reference voltage V s shown in Fig. 5 amplifies voltage V _a1(a/2) ' and (b/2) ' between and approach (b/2) ' the mode of value adjust the resistance value of gain-adjusted variable resistance R2.

Thus, for example can be only human body near or load 90 is worked while having contacted plant 10, and do not make load 90 work in the time of plant 10 and human body distant.And, in above-mentioned example, can be only in the time that client etc. is visiting, make as the LED of load 90 luminously, and bicycle etc. do not make LED luminous through out-of-date grade under other reasons.

(the second execution mode)

Then, according to Fig. 9, the second execution mode of contactless operating circuit of the present utility model is described.

Fig. 9 is the circuit diagram that represents the structure of the contactless operating circuit of present embodiment.

Present embodiment is compared with the first execution mode, different in the structure of detector.; with respect to being formed as in the first embodiment: utilize to detect and use DC resistor measurement return current; utilize detection diode pair to detect voltage and carry out rectification; utilize amplifier to amplify; utilize voltage comparator 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 the structure of utilizing bridge circuit (bridge circuit) to detect the situation of change of return current.Other structure is identical with the first execution mode.

And, in Fig. 9, give identical symbol for the structure identical with Fig. 1 etc., and omit its detailed explanation.

As shown in Figure 9, the contactless operating circuit 1b of present embodiment has plant 10, cultivation soil 20, container 30, the 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 that is inserted into container 30 first side, be connected with resistance R b1 Second Edge, be connected with the 3rd limit of resistance R b2 and be connected with the 4th limit as the capacitor Cb1 of fixing standard capacitor.

The equilibrium condition of this bridge circuit 73 is Cb1 × Rb2=Cs × Rb1.

In addition, because a number or size according to plant 10 change to some extent, therefore maintain balance by any one formation by variable resistance in resistance R b1 or resistance R b2, thereby suppress base current (base current).

In addition, in bridge circuit 73, the tie point of first side and Second Edge is made as to a12, the tie point on Second Edge and the 3rd limit is made as to a23, the tie point on the 3rd limit and the 4th limit is made as to a34, the tie point of the 4th limit and first side is made as 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 places produce, 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., the control signal V in the first execution mode _a2be equivalent to voltage e, input this voltage e after this voltage e (generation) fluctuation time, relay drive circuit 81 is to relay 82 output action control signals.

In relay 82, by (T Fig. 6) in during relay drive circuit 81 input action control signals, apply supply voltage to load 90.The action that makes thus load 90 put rules into practice.

Then, describe for the action of the contactless operating circuit of present embodiment according to Fig. 9.

Human body away from or while not contacting plant 10, bridge circuit 73 is poised state, and becomes 0 at a voltage e of a23 place.Therefore, load controller 80 does not carry out work, and work is not carried out in load 90 yet.

On the other hand, in the time that human body is close or contact plant 10, the electrostatic capacitance Ch between human body (hand) and plant 10 (leaf) is added in Cs, thereby makes bridge circuit 73 be unbalanced state.Thus, voltage e is revealed as unbalance voltage and becomes contact detection voltage, thereby by the control of load controller 80, load 90 is worked.

In addition, in the bridge circuit 73 shown in Fig. 9, be formed: resistance R b1 is connected in Second Edge, resistance R b2 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 R b1, resistance R b2 and capacitor Cb1 also can be connected in any one limit in first side, Second Edge, the 3rd limit and the 4th limit in bridge circuit 73.In addition, also can be formed as: a limit four limits till first side to the four limits is series connection or the structure of contact resistance Rb1 or resistance R b2 and capacitor Cb1 in parallel.And, even if be formed in the situation of said structure, also require human body away from or while not contacting plant 10, this bridge circuit 73 is poised state, and becomes 0 at a voltage e of a23 place.

In addition, about the resistance R b1, the resistance R b2 that are connected in bridge circuit 73, can use the variable resistance that can change its resistance value.And then, can use the variable capacitor that can change its electrostatic capacitance about capacitor Cb1.

And, be used as by change resistance R b1, resistance R b2 variable resistance resistance value and as the electrostatic capacitance of the variable capacitor of capacitor Cb1, thereby can adjust human body near or contact plant 10 and sensitivity when load 90 is worked.

For example, in the case of so that the value of electrostatic capacitance Cs becomes the large resistance value of mode adjusting resistance Rb1, resistance R b2 and the electrostatic capacitance of capacitor Cb1, in the time that electrostatic capacitance Ch is larger, make load 90 work.Therefore, can make load 90 work in the time of the close together of plant 10 and human body, and such as, at object (bicycle etc.) through at a distance time, not making load 90 work from plant 10.

On the other hand, in the case of so that the resistance value of mode adjusting resistance Rb1, resistance R b2 and the electrostatic capacitance of capacitor Cb1 that the value of electrostatic capacitance Cs diminishes, when electrostatic capacitance Ch hour works load 90.Therefore, not only can in the time of the close together of plant 10 and human body, load 90 be worked, and also can make load 90 work in the time of plant 10 and human body distant.

As mentioned above, according to the structure of the contactless operating circuit of present embodiment, even in the time forming detector by bridge circuit, thus also can detect exactly human body near or the situation that contacted plant make loaded work piece.

Especially, because the structure of the contactless operating circuit of present embodiment is the structure that has used bridge circuit in detector, therefore, the voltage containing the variable quantity of base current, only producing because of coming close to or in contact with of hand can be extracted not, and the slight change of the switch motion point causing because of the variation of supply voltage or environment temperature can be ignored.

Above, preferred implementation for contactless operating circuit structure of the present utility model is illustrated, but the contactless operating circuit structure that the utility model relates to is not limited to above-mentioned execution mode, certainly can in scope of the present utility model, carry out various change enforcement.

For example, 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 utility model be human body near or make the utility model of loaded work piece when contact plant, therefore the utility model can be used in using lamp decoration (LED etc.) the plant decoration utensil during as load, in output-controlling device during using audio output device as load and the driving control device during using motor as load etc.

Claims

1. a contactless operating circuit structure, it possesses the load controller that applies supply voltage to load, and described contactless operating circuit structure is characterised in that to possess:

Detector, its human body near or contact when plant, detect near the variation of the electrostatic capacitance that position produces near position described human body or described plant and export control signal, and

Described load controller, in the time receiving the described control signal of exporting from described detector, it applies described supply voltage to described load;

Described load controller is connected between described detector and described load.

2. contactless operating circuit structure as claimed in claim 1, is characterized in that,

Described contactless operating circuit structure possesses:

The first electrode, it is installed in described plant, on soil for cultivation, one or more object in container,

AC power, it applies alternating voltage to described the first electrode, and

The second electrode, it makes the ground connection side ground connection of described AC power;

Described detector is connected between described AC power and described the second electrode, and, when described human body near or while contacting described plant, described detector detects the variation of the electrostatic capacitance producing based near position near position described human body or described plant and the described AC power and described the second interelectrode curent change that produce.

3. contactless operating circuit structure as claimed in claim 2, is characterized in that,

Described detector has:

Detection resistor, its detection circulates in the electric current between described AC power and described the second electrode,

Diode, it is to carrying out rectification in described detection with the voltage producing in resistor by the detection of described electric current,

Amplifier, its using amplified by the voltage after described diode rectification and as amplification Voltage-output, and

Voltage comparator, it is by the described amplification voltage from described amplifier and represent that threshold voltage of assigned voltage value compares, and exports described control signal during higher than described threshold voltage at described amplification voltage;

Described detection is connected between described AC power and described the second electrode with resistor;

Described diode is connected between described detection resistor and described amplifier;

Described amplifier is connected between described diode and described voltage comparator.

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, and

Reference voltage regulating circuit, its input, from the voltage of described stabilized power supply circuit output, is exported to described voltage comparator as described threshold voltage after the magnitude of voltage of adjusting this voltage;

Described reference voltage regulating circuit is connected between described stabilized power supply circuit and described voltage comparator.

5. contactless operating circuit structure as claimed in claim 1, is characterized in that,

Described detector has bridge circuit;

Described bridge circuit have first side, with the Second Edge of described first side adjacency, with the 3rd limit of described Second Edge adjacency and with the 4th limit of described the 3rd limit adjacency;

Described AC power is connected between the described first side of described bridge circuit and the tie point of Second Edge and described the 3rd limit and the tie point on the 4th limit;

The direct-to-ground capacitance that described first side comprises described container;

When the fluctuation of the voltage producing when the described Second Edge of described bridge circuit and the tie point place on described the 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 in any one in the described first side of described bridge circuit, described Second Edge, described the 3rd limit and described the 4th limit take the resistance on top as variable resistor;

Be connected in any one in the described first side of described bridge circuit, described Second Edge, described the 3rd limit and described the 4th limit take the capacitor on top as variable capacitor.