CN1855722A - Electronic switch and operation method for same - Google Patents

Electronic switch and operation method for same Download PDF

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Publication number
CN1855722A
CN1855722A CNA2006100746474A CN200610074647A CN1855722A CN 1855722 A CN1855722 A CN 1855722A CN A2006100746474 A CNA2006100746474 A CN A2006100746474A CN 200610074647 A CN200610074647 A CN 200610074647A CN 1855722 A CN1855722 A CN 1855722A
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China
Prior art keywords
voltage
magnitude
circuit
output
electronic switch
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CNA2006100746474A
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Chinese (zh)
Inventor
味冈勉
一色信贤
畠田光男
石桥敬介
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Omron Corp
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Omron Corp
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Publication of CN1855722A publication Critical patent/CN1855722A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H36/00—Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63F—CARD, BOARD, OR ROULETTE GAMES; INDOOR GAMES USING SMALL MOVING PLAYING BODIES; VIDEO GAMES; GAMES NOT OTHERWISE PROVIDED FOR
    • A63F7/00—Indoor games using small moving playing bodies, e.g. balls, discs or blocks
    • A63F7/02—Indoor games using small moving playing bodies, e.g. balls, discs or blocks using falling playing bodies or playing bodies running on an inclined surface, e.g. pinball games
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V15/00—Tags attached to, or associated with, an object, in order to enable detection of the object
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/945—Proximity switches
    • H03K17/955—Proximity switches using a capacitive detector
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2239/00—Miscellaneous
    • H01H2239/074—Actuation by finger touch

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geophysics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Pinball Game Machines (AREA)
  • Electronic Switches (AREA)

Abstract

The invention is able to restrain the incorrect operation of electric switch caused by the strong radio waves. According to the operation status of double electronic switches circuit, the output circuit alters the output voltage which is at least intermediate voltage between the power supply vloltage and the ground, and if the toy ball of the inspected noumenon is detected, the output is the first output voltage equal or close to the supply voltage, if the toy ball is undetected, the output is equal to or close to the ground, and if the radio waves are detected, the output is a middle said voltage which is less than or equal to the power supply vloltage and more than or equal to the ground. This invention can be applied to marble play machines.

Description

Electronic switch and be used for the method for operation of electronic switch
Technical field
The present invention relates to a kind of electronic switch and be used for the method for operation of electronic switch, especially relate to a kind of like this electronic switch and be used for the method for operation of electronic switch, can suppress to cause the illegal act of maloperation whereby based on utilizing strong radio wave.
Background technology
The pachinko game machine uses a large amount of two-wire DC game ball sense switches that game ball is detected of being used for.Two-wire DC switch provides the sensitivity identical with mechanical switch, and because it is an electronic switch, so its advantage is that this switch can not produce machinery " vibration " in output signal.In addition, also exist it to be used as three-way DC switch of game ball sense switch or the like.
In the pachinko game machine, for above-mentioned game ball is detected, except two-wire game ball sense switch, also provide such as the people who links to each other with the joystick parts touch switch, a plurality of electronic switches that switch or the like is such are determined in the position, and according to the detected state of each switch can be indirect the game state of identification pachinko game machine.
In the pachinko game machine, provide the joystick that is used to launch out game ball, and game ball is carried out the player of proper handling and is ejected to joystick by means of being used for.In addition, if the game ball that is ejected enters the regulation door, thus prize-winning, and pachinko game machine payment after this is according to the game ball of this set defined amount.Therefore, if the player continues to make game ball success access door by the joystick of pachinko game machine is suitably controlled, the player not only can continue to play games so, and the game ball number of being paid is increased.
Therefore, can not eradicate by the enforceable switch that makes various functions is incorrect and manage to need not to make game ball correctly to enter prize-winning door and can make the such criminal suit of machine payment.
More precisely, in this illegal act, for example, because whether above-mentioned two-wire game ball sense switch is used to judge game ball and wins a prize by access door, therefore make the switch malfunction by the strong radio wave irradiation that transceiver or the like is launched, thereby it is such that two-wire game ball sense switch is play a part improperly as winning, and no matter game ball not in door such fact of winning a prize.
In addition, itself and the suitable different switch of two-wire game ball sense switch can be installed, so by this switch control detection signal freely.
In addition, also can control so that cause and open circuit or short circuit or so that apply abnormal potential the power circuit of electronic switch.
Under any circumstance, electronic switch itself or its are connected the illegal processing of lead execution.
Answer this class illegal act, be proposed in electronic switch inside one radio wave testing circuit is provided, and when the radio wave testing circuit is operated, by carrying out it with detected object ontological existence/do not have the different output function of signal and the irradiating state that will be applied to the radio wave on the electronic switch outputs to components downstream (is the Japanese patent application of 2001-149532 referring to publication number).
In addition, with publication number be that the Japanese patent application of 2001-149532 is similar, also be proposed in electronic switch inside one radio wave testing circuit is provided, and when the radio wave testing circuit is operated, keep being right after the state (is the Japanese patent application of 2002-50954 referring to publication number) before detected object ontological existence/do not have signal.
Yet, in said method, can not to such as lead open circuit or the installation of short circuit, independent switch, independent voltage apply or the so a plurality of dissimilar illegal act of irradiation of radio wave detects, and in addition, can't determine the type of performed illegal act.Especially, in the game ball sense switch, from with the angle that is connected compatibility or the like of interface circuit, expectation can to such as open circuit, the installation of short circuit, independent switch, independent voltage apply or the so a plurality of dissimilar illegal act of irradiation of radio wave detects, and in the type that only can discern performed illegal act under the situation of above-mentioned two-wire switch under only by means of current potential between two terminals or situation by means of the current potential of output at tee.Yet possibility does not realize this.
In addition, in said method, because in interface circuit, have need for independence, so the structure of interface circuit is very complicated, and exist the employed software amount of control computer that is used for the pachinko game machine is controlled to increase such risk to demodulator circuit or the like.
Summary of the invention
In view of the foregoing invented the present invention, its objective is by means of easy structure and can suppress it causes the electronic switch maloperation based on using strong radio wave illegal act.
Electronic switch according to the present invention comprises: detected object body checkout gear is used for the existence of detected object body or does not exist detecting; The radio wave checkout gear is used for radio wave is detected; And output device, if detected object body checkout gear detects the detected object body, this output device is used to export first output voltage values so, if do not detect the detected object body, this output device is exported second output voltage values so, if and the radio wave checkout gear detects radio wave, this output device is exported the 3rd output voltage values so.
First to the 3rd output voltage values is respectively different magnitude of voltage, its be respectively equal or near a magnitude of voltage of supply voltage value, equal or near a magnitude of voltage of earthed voltage value or less than supply voltage value and greater than an intermediate voltage value of earthed voltage value.
This output device comprises such switching device, this switching device be used for output voltage switch to its less than supply voltage value and greater than at least one or a plurality of intermediate voltage value of earthed voltage value, it equals or near first output voltage values of supply voltage value, it equals or near second output voltage values of earthed voltage value, and make that this output device output switch apparatus switched its less than first output voltage values and greater than an intermediate voltage value of second output voltage values with as the 3rd output voltage values.
This output device comprises such switching device, this switching device is used for and will be outputted to it less than supply voltage value and greater than at least one intermediate voltage value of earthed voltage value, wherein can make first magnitude of voltage and second magnitude of voltage as first intermediate voltage value and second intermediate voltage value, and make output device export its equal near a magnitude of voltage of supply voltage value or its equal or near a magnitude of voltage of earthed voltage value with as the 3rd output voltage values.
Output device comprises diode, fixed current circuit, Zener diode, fixed voltage circuit or the like, and by making these element open circuits and closed, can the output voltage values that output device is exported be switched.
According to detected object ontological existence judgement of the present invention system is that it can be judged and opens circuit or a system of short circuit, as long as first to the 3rd output voltage values is and supply voltage value or the different magnitude of voltage of earthed voltage value.
In detected object ontological existence judgement according to the present invention system, interface circuit comprises diode, fixed voltage circuit, Zener diode, have diode, fixed voltage circuit, Zener diode and fixed current circuit with the basic identical feature of fixed voltage circuit.
Pachinko game machine according to the present invention comprises according to any one electronic switch of claim 1 to 5 or according to the detected object ontological existence of claim 6 or 7 judges system.
The method of operation that is used for electronic switch according to the present invention comprises step: to the existence of detected object body or do not exist and detect; Radio wave is detected; And if detect the detected object body, and export first output voltage values so, if do not detect the detected object body, export second output voltage values so, and if detect radio wave, the 3rd output voltage values exported so.
In electronic switch according to the present invention and the method for operation that is used for it, if detect the detected object body, export first output voltage values so, if do not detect the detected object body, export second output voltage values so, if and the radio wave checkout gear detects radio wave, export the 3rd output voltage values so.
Being used for the existence of detected object body or not having the detected object body checkout gear that detects for example is the operation signal decision circuit of electronic switch; The radio wave checkout gear that is used for that radio wave is detected for example is the radio wave testing circuit; And following output device for example is an output circuit, if if if described output device detects output first output voltage values under the situation of detected object body, do not detecting output second output voltage values under the situation of detected object body and detects output the 3rd output voltage values under the situation of radio wave at the radio wave checkout gear at detected object body checkout gear.
There is such output circuit, this output circuit is used for exporting it and equals or near a magnitude of voltage of power supply power values when detecting the detected object body, exporting it when not detecting the detected object body equals or near a magnitude of voltage of earthed voltage value, and when detecting radio wave, export following intermediate voltage value, described intermediate voltage value equals less than it or equals or near a magnitude of voltage of earthed voltage value near a magnitude of voltage of supply voltage value and greater than it, and there is such output circuit, this output circuit is used for exporting respectively following different intermediate voltage value when detecting detected object and when not detecting the detected object body, described different intermediate voltage value its equal or equal near a magnitude of voltage of supply voltage value and its or a magnitude of voltage near the earthed voltage value between, and this output circuit be used for when detecting radio wave, exporting its equal or near a magnitude of voltage of supply voltage value or its equal or near a magnitude of voltage of earthed voltage value with as the 3rd output voltage values.
Therefore, output voltage changes according to the mode of operation of electronic switch, and therefore, also can determine the existence of game ball or does not exist according to this output voltage values.Therefore also can detect and radio wave whether occur and can suppress based on the illegal act of using the maloperation that radio wave caused.
According to the present invention, can suppress illegal act based on the maloperation of using the electronic switch that strong radio wave caused by means of simple structure.
Description of drawings
Fig. 1 shows of the pachinko game machine that uses the game ball sense switch relevant with the present invention
The structure of embodiment;
Fig. 2 has provided the external structure of the electronic switch among Fig. 1 and the schematic diagram of operating principle;
Fig. 3 has provided the external structure of the electronic switch among Fig. 1 and the schematic diagram of operating principle;
Fig. 4 has described the structure of an embodiment of two-wire electronic switch;
Fig. 5 has provided and has been used for schematic diagram that the radio wave testing circuit is described;
Fig. 6 has provided and has been used for schematic diagram that the structure with an embodiment of the corresponding interface circuit of two-wire electronic switch shown in Figure 4 is described;
Fig. 7 has provided magnitude of voltage V 1To V 9Amplitude between relation, wherein, transverse axis is represented power source voltage Vcc 1And the longitudinal axis is represented the voltage of output Va;
Fig. 8 has provided the terminal V that is input to the control computer 10To V 13The pattern diagram of signal, described signal is the comparative result from comparison circuit COM1 to COM4;
Fig. 9 has provided and has been used for a flow chart of handling that the voltage between the output of electronic switch shown in Figure 4 is switched;
Figure 10 has provided and has been used for the schematic diagram that the further structure to itself and the corresponding interface circuit of two-wire electronic switch shown in Figure 4 is described;
Figure 11 has provided and has been used for the schematic diagram that the structure to an embodiment of three-way electronic switch is described;
Figure 12 has provided and has been used for the schematic diagram that the further structure to itself and the corresponding interface circuit of three-way electronic switch shown in Figure 11 is described;
Figure 13 has provided magnitude of voltage V 21To V 29Amplitude between relation, wherein transverse axis is represented power source voltage Vcc 2And the longitudinal axis is represented the voltage of output end vo ut;
Figure 14 has provided the terminal V that is input to the control computer 31To V 34The pattern diagram of signal, described signal is the comparative result from comparison circuit COM1 to COM4;
Figure 15 has provided and has been used for a flow chart of handling that the voltage between the output of electronic switch shown in Figure 11 is switched;
Figure 16 has provided and has been used for the schematic diagram that the further structure to three-way electronic switch is described;
Figure 17 has provided and has been used for the schematic diagram that the further structure to itself and the corresponding interface circuit of two-wire electronic switch shown in Figure 4 is described;
Figure 18 has provided and has been used for a flow chart of handling that the voltage between the output of electronic switch shown in Figure 17 is switched;
Figure 19 has provided and has been used for the time diagram of handling that the voltage to the output of interface circuit shown in Figure 17 switches; And
Figure 20 has provided and has been used for the schematic diagram that the further structure to three-way electronic switch is described.
Embodiment
(most preferred embodiment)
Fig. 1 has provided it and has used pachinko game machine 11 according to game ball sense switch of the present invention (below be referred to as " electronic switch ").
Handle 12 is positioned on the surface of its pachinko game machine of facing mutually with the player 11, and when the player holds this handle 12 and makes it on direction of rotation of regulation when rotating, utilize with the corresponding power of angle of rotation game ball to be launched at it to be positioned within the lip-deep plate face of facing mutually with player 1.
Electronic switch 21 determines whether game ball wins a prize by the door (undeclared) that enters on this plate face, and determine whether produced strong radio wave (determining whether to detect highfield) in its vicinity, and this is offered interface circuit 22 as voltage value signal.Electronic switch 21 can be two-wire DC type or three-way DC type switch (being called two-wire and tee hereinafter) and under the situation of two-wire switch, according to the differential voltage value between the two ends this signal is offered interface circuit 22, otherwise under the situation of tee, according to the magnitude of voltage of output only and this signal is offered interface circuit 22.
The voltage value signal that interface circuit 22 is provided according to electronic switch 21 changes to have produced and is used to represent the signal that detects a signal of game ball whether and be used to represent to detect whether strong radio wave, and this signal is offered control computer 23.
If represent that the information that detects game ball detects game ball according to interface circuit 22 being used to of being provided, control the game ball of computer 23 payment respective number so by means of payment parts (undeclared).In addition, if detect strong radio wave, control computer 23 so and carry out illegal act or the like by means of strong radio wave to the report of main Room computer.
Next, be described referring to figs. 2 and 3 external structure and operating principle electronic switch 21.Electronic switch 21 has thin and the shape of quadrate basically, and as shown in Figure 2, the through hole 21a that game ball 31 can be passed is at the only about half of middle body opening of the electronic switch 21 that is positioned at the one side.
Fig. 3 has provided the sectional view of the electronic switch 21 among Fig. 2.
As shown in Figure 3, coil 21b is embedded in the inside of electronic switch 21 on every side in the periphery of through hole 21a.In electronic switch 21, high-frequency oscillating circuits (undeclared) has produced the higher-order of oscillation, thereby has produced the magnetic flux shown in the dotted line among Fig. 3 around the periphery of coil 21b.When game ball 31 was passed through hole 2, the state of magnetic flux had changed and the impedance of coil 21b has also changed.In electronic switch 21, determine the variation of coil 21b impedance and export a signal.(when the position of game ball 31 between the cross section of coil 21b shown in Figure 3) supposed that so electronic switch 21 is open-circuit condition, otherwise under other all situations, supposed to be closure state when game ball 31 is passed through hole 21b.
Especially under the situation of two-wire switch, can use it to have electronic switch 21 to the similar sensitivity of mechanical type switch, and in addition, because use electronic switch, so its advantage is can not produce vibration in the signal that electronic switch 21 is exported.
Next, the structure with reference to an embodiment of 4 pairs of two-wire electronic switches 21 of figure is described.
Power end (hot end) Va is by load resistance R 1With power source voltage Vcc 1Link to each other.Power end (cold end) Vb ground connection.
Oscillating circuit 51 is to be made of its resonant circuit that includes coil LI (the coil 21B among Fig. 3) and capacitor C1, and final resonance amplitude is offered detection ripple integrating circuit 52.
The oscillator signal that detecting 52 pairs of oscillating circuits 51 of ripple integrating circuit is provided carries out integration, and the result is offered the operation signal decision circuit.
According to carrying out the signal that integration obtained by the detection ripple that detection ripple integrating circuit 52 is provided, if do not detect the vicinity of game ball 31, operation signal decision circuit 53 makes electric current pass the NPN transistor Tr of output circuit 57 so 4Base stage, thereby make NPN transistor Tr 2Become the ON state.On the other hand, if detect game ball 31, operation signal decision circuit 53 stops electric current being offered NPN transistor Tr so 2Base stage and NPN transistor TrX be set to the OFF state.
If detect strong radio wave, radio wave testing circuit 54 offers amplifying circuit 55 and see-saw circuit 56 with power supply so.More precisely, radio wave testing circuit 54 has it and uses the transistorized structure of lateral type PNP, and when detecting strong radio wave, electric current is offered the NPN transistor Tr of output circuit 57 by amplifying circuit 55 3Base stage and stop electric current being offered NPN transistor Tr by see-saw circuit 56 4Base stage.
Lateral PNP transistor for example has structure shown in Figure 5, and this lateral PNP transistor is used within the semiconductor integrated circuit.
In lateral PNP transistor, the N layer is formed on the P layer.The P+ district is positioned on the P floor that has arrived its upper surface.Formed the P+ district of emitter E, the N+ floor that has formed the P+ district of collector electrode C and formed base stage B is formed at respectively on the upper surface of P floor.In lateral type PNP transistor, when radio wave shines thereon, produced leakage current to the P layer from the N layer, and therefore leakage current as base current and can be with the conducting of PNP transistor circuit.In addition, by using above-mentioned lateral type PNP transistor, broaden by the scope A that makes the leakage current that in the radio wave range of exposures, is produced and to improve sensitivity.
Output circuit 57 can change differential voltage between power end Va and the power end Vb by means of the power supply of operation signal decision circuit 53, amplifying circuit 55 and see-saw circuit 56.
The PNP transistor Tr of power end Va and output circuit 57 1Emitter link to each other and PNP transistor Tr 1Base stage and resistance R 2And resistance R 3Intermediate potential link to each other.In addition, resistance R 2With power end Va and fixed current circuit I 1Link to each other.
In addition, resistance R 3With NPN transistor Tr 2And Tr 3Collector electrode link to each other.
NPN transistor Tr 1Collector electrode and Zener diode ZD 1Negative electrode link to each other.Zener diode ZD 1Anode and diode D 1Anode and transistor Tr 4Collector electrode link to each other.Diode D 1Negative electrode and diode D 2Anode link to each other and diode D 2Minus earth.In addition, transistor Tr 4Also ground connection of emitter.
The fixed current circuit I 1Its power supply with fixed current value is offered oscillating circuit 51, detects ripple integrating circuit 52, operation signal decision circuit 53 and radio wave testing circuit 54, and provide it to Zener diode ZD 2
Next, the operation to the electronic switch among Fig. 4 21 is described.
If do not detect radio wave and do not detect game ball 31, radio wave testing circuit 54 does not make current flowing to NPN transistor Tr so 3Base stage, therefore and disconnect NPN transistor Tr 3, while NPN transistor Tr 4Conducting and electric current are in transistor Tr by see-saw circuit 56 4Emitter and collector electrode between flow.In addition, operation signal decision circuit 53 offers NPN transistor Tr with electric current 2Base stage.Therefore, NPN transistor Tr 2Conducting.
Electric current passes through resistance R 3And in the PNP transistor Tr 1Base stage in flow, thereby make this transistor turns.During this period, diode D 1And D 2By NPN transistor Tr 4And bypass.
More precisely, if do not detect radio wave and do not detect game ball, transistor Tr so 1, Tr 2, Tr 4All conductings, and NPN transistor Tr 3Disconnect.Therefore, shown in following formula (1), its voltage (Va-Vb) that is called as between the output of two-wire electronic switch 21 of residual voltage is Zener diode ZD 1Magnitude of voltage on the terminal.This is meant that the residual voltage value when electronic switch 21 closures is Zener diode ZD 1Voltage on the terminal, therefore and can guarantee the electronic switch 21 required minimum voltage that will work.
V 1＝Va-Vb＝VZD 1 (1)
Here, V 1Be illustrated in the voltage (Va-Vb) between the normally closed operating period output of two-wire electronic switch 21.In addition, VZD 1Be Zener diode ZD 1Apply voltage.
In addition, if do not detect radio wave and do not detect game ball 31, similar with above-mentioned situation so, radio wave testing circuit 54 does not make current flowing to NPN transistor Tr 3Base stage, therefore and disconnect NPN transistor Tr 3, while NPN transistor Tr 4Conducting and electric current are in transistor Tr by see-saw circuit 56 4Emitter and collector electrode between flow.In addition, operation signal decision circuit 53 does not offer electric current NPN transistor Tr 2Base stage.Therefore, NPN transistor Tr 2Disconnect, do not have electric current in the PNP transistor Tr 2Collector electrode and emitter between flow, and in addition, do not have electric current to flow to the PNP transistor Tr 1Base stage, and therefore PNP transistor Tr 1Disconnect.
In addition, because electric current at NPN transistor Tr 4Emitter and collector electrode between flow, therefore make diode D 1And D 2Bypass (detouring).
More precisely, if do not detect radio wave and do not detect game ball, transistor Tr so 4Conducting, and transistor Tr 1, Tr 2, Tr 3Each all disconnect.Therefore, in the inside of electronic switch 21, fixed current circuit I only 1Consumed power.This is meant that electric current becomes the fixed current circuit I 1In required minimum leakage current I 1So that electronic switch 21 works, and in this case, represent the voltage (Va-Vb) between the output of two-wire electronic switch 21 by formula as follows (2) during open circuit operation.
V2＝Va-Vb＝Vcc 1-R 1×I 1 (2)
Here, V 2Be illustrated in the voltage (Va-Vb) between the output in the two-wire electronic switch 21 during the normal open circuit operation.In addition, Vcc 1It is power source voltage Vcc 1Output voltage values, R 1It is resistance R 1Resistance value, and I 1It is the current value of fixed current circuit.
In addition, if detected radio wave, radio wave testing circuit 54 makes electric current lead to NPN transistor Tr by amplifying circuit 55 so 3Base stage, and therefore NPN transistor Tr 3Conducting, electric current is in transistor Tr 3Emitter and collector electrode between flow and NPN transistor Tr 4Disconnect by see-saw circuit 56.Consequently, whether output current is irrelevant with operation signal decision circuit 53, and electric current flow to the PNP transistor Tr 1Base stage, and therefore PNP transistor Tr 1Conducting.
In addition, because NPN transistor Tr 4Disconnect, therefore drive diode D 1, D 2
In other words, if detect radio wave, with whether to detect game ball 31 irrelevant, NPN transistor disconnects and transistor Tr so 1, Tr 3The two conducting, and therefore electronic switch 21 is operated under the pattern of closure, but because Tr 4Disconnect, so diode D 1And D 2Effectively and shown in following formula (3), the magnitude of voltage between the terminal is different with the magnitude of voltage of normally closed operating period.
V 3＝Va-Vb＝VZD 1+VD 1+VD 2 (3)
Here, V 3Be illustrated in the voltage (Va-Vb) between the output in the two-wire electronic switch 21 under the situation of highfield.In addition, VZD 1Be to be applied to Zener diode ZD 1On magnitude of voltage and VD 1And VD 2Be respectively diode VD 1And VD 2Magnitude of voltage on the terminal.
In addition, if because certain class in the electronic switch 21 is former thereby the incident that opens circuit has taken place, pressure drop can not occur so, and therefore the voltage (Va-Vb) between the output is power source voltage Vcc 1Actual voltage value Vcc 1
In addition, if because certain class in the electronic switch 21 is former thereby short circuit event has taken place, can ignore the potential difference between the output so, and therefore the voltage (Va-Vb) between the output becomes 0.
According to this pattern, according to the existence of detected object body or do not exist and the changed condition relevant with highfield, two-wire electronic switch 21 can obtain above-mentioned formula (1) to the voltage V shown in the formula (3) 1, V 2, and V 3Perhaps be exactly Vcc 1Or the voltage between 0 the output (Va-Vb).
Next, describe with reference now to Fig. 6 pair of structure with an embodiment of above-mentioned two-wire electronic switch 21 corresponding interface circuits 22.Utilize same reference numbers to come mark and electronic switch 21 total or identical structure divisions shown in Figure 4, and omit explanation here it.Reference voltage is created circuit 71 and has been produced four different reference voltage levels according to the magnitude of voltage that high potential output Va is provided, and these reference voltage levels is offered the negative input end of comparison circuit COM1 to COM4 respectively.
Comparison circuit COM1 to COM4 creates circuit 71 with reference voltage and offers four reference voltage levels of respective negative input and compare with the magnitude of voltage that offers positive input terminal from output Va, and they offer corresponding comparative result the terminal V of control computer 23 10To V 13
The output Vb that is positioned at electronic switch 21 low potential sides links to each other with earth potential.In addition, it is such circuit that reference voltage is created circuit 71, and this circuit is according to from resistance R 1With power source voltage Vcc 1Between a position include the resistance R of arranged in series to earthy order 4, the fixed current circuit I 2, diode D 3, D 4, D 5, and Zener diode ZD 3And therefore, will be exactly resistance R 4With the fixed current circuit I 2Between a magnitude of voltage V of intermediate potential 4Offer the negative input end of comparison circuit COM1.In addition, will be exactly the fixed current circuit I 2With diode D 3The magnitude of voltage V of intermediate potential 5Offer the negative input end of comparison circuit COM2.
In addition, will be exactly diode D 4With D 5Between a magnitude of voltage V of intermediate voltage 7Offer the negative input end of comparison circuit COM3.In addition, according to diode D 5With Zener diode ZD 3Between intermediate potential (magnitude of voltage V 8), by diode D 6With magnitude of voltage V 9Offer the negative input end of comparison circuit COM4.Here, diode D 3With D 4Between intermediate potential be magnitude of voltage.
In addition, above-mentioned Zener diode ZD 1(Fig. 4) with Zener diode ZD 3Identical, and the fixed current circuit I 1(Fig. 4) with the fixed current circuit I 2(Fig. 6) identical, and in addition, employed here diode D 3, D 4, D 5, D 6Respectively with diode D 1And D 2(Fig. 4) identical.
In addition, resistance R 4Has the resistance R of ratio 1Want little resistance value.Therefore, because the fixed current circuit I 1And I 2Having identical characteristics, therefore, is exactly resistance R during normal open circuit operation 4With the fixed current circuit I 2Between the magnitude of voltage V of intermediate potential 4Magnitude of voltage V greater than the voltage between the output of two-wire electronic switch 21 (Va-Vb) 2(V4＞V2).
In addition, represent above-mentioned magnitude of voltage V by following formula (4) to (9) 4To V 9:
V 4＝Vcc 1-R 4×I 2 (4)
V 5＝VZD 3+VD 3+VD 4+VD 5 (5)
V 6＝VZD 3+VD 4+VD 5(V 6≌V 3 (6)
V 7＝VZD 3+VD 5 (7)
V 8＝VZD 3 (8)
V 9＝VZD 3-VD 6 (9)
Here, VD 3To VD 6Be diode D 3To D 6Terminal on voltage, and VZD 1And VZD 3Be corresponding Zener diode ZD 1And ZD 3Terminal on voltage.
As shown in Figure 7, always make magnitude of voltage V 1To V 9Amplitude between relation keep identical, and and power source voltage Vcc 1Magnitude of voltage Vcc 1The variation and the variation of external relations irrelevant.
Fig. 7 has provided magnitude of voltage V 1To V 9Amplitude between relation, wherein transverse axis is represented power source voltage Vcc 1And the longitudinal axis is represented the voltage of output Va.Because output Vb ground connection, therefore can think the magnitude of voltage V of output Va INBasically with output between voltage identical.
Magnitude of voltage Vcc 1With V 1To V 9Amplitude between relation be: according to order from maximum to minimum value, magnitude of voltage Vcc 1, V 4, V 2, V 5, V 3, V 7, V 1, V 9, and and power source voltage Vcc 1Magnitude of voltage Vcc 1The variation and the variation of external relations irrelevant.Here, magnitude of voltage V 2And V 4Be positioned at power source voltage Vcc 1Afterwards and therefore they are according to magnitude of voltage Vcc 1Variation and on the chart right side, rise, but keep amplitude relation.By considering the range of voltage values V among Fig. 7 mTo V nCome it has been formed the power source voltage Vcc of the fixation application voltage of electronic switch 21 1Be provided with.
In addition, diode D 1To D 6Be identical and Zener diode ZD 1And ZD 3Be identical.Therefore, if terminal voltage VD 1To VD 6Be VD 1=VD 2=VD 3=VD 4=VD 5=VD 6=VD and terminal voltage VZD 1And VZD 3Be VZD 1=VZD 3=VZD, magnitude of voltage V so 5, V 3, V 7, V 1, and V 9Be respectively VZD+3VD, VZD+2VD, VZD+VD, VZD and VZD-VD.Therefore, magnitude of voltage V 5With magnitude of voltage V 3Between potential difference (V 5-V 3), magnitude of voltage V 3With magnitude of voltage V 7Between potential difference (V 3-V 7), magnitude of voltage V 7With magnitude of voltage V 1Between potential difference (V 7-V 1), magnitude of voltage V 1With magnitude of voltage V 9Between potential difference (V 1-V 9) all are VD (=α V: Fig. 7).
Because offer the magnitude of voltage of the negative input end of comparison circuit COM1 to COM4 is magnitude of voltage V 4, V 5, V 7, and V 9(magnitude of voltage shown in the dotted line difference among Fig. 7), so comparison circuit COM1 to COM4 is respectively with output V INMagnitude of voltage V INWith magnitude of voltage V 4, V 5, V 7, V 9Between comparative result output to control computer 23 terminal V 10To V 13
As mentioned above, can learn that it is exactly above-mentioned voltage V that the voltage that can be between electronic switch 21 outputs (Va-Vb) obtains here, 1To V 3, Vcc 1, or 0 such five different values (actual voltage value (=V of output Va under present case IN)), and therefore, will be input to the terminal V of control computer 23 10To V 13The signal mode of comparative result that is used to represent comparison circuit COM1 to COM4 be divided into as shown in Figure 8 five patterns.Fig. 8 has provided the mode number (No.) of operator scheme, the mode of operation and the terminal V of electronic switch 21 from left to right 10To V 13The promptly high (Vcc of analog value 1) or low (0).
Be exactly not detecting game ball 31 and not detecting in the operator scheme 1 of radio wave magnitude of voltage V of normally closed operation shortly IN(=Va) is the magnitude of voltage V shown in the above-mentioned formula (1) 1, and therefore, as shown in Figure 7, be input to the terminal V of control computer 23 10To V 13The signal mode of creating by comparative result have and be used for magnitude of voltage V 9The comparison circuit COM4 that compares corresponding one high value, and have corresponding low value with other comparison circuits COM1 to COM3.
Be exactly detecting game ball 31 but not detecting in the operator scheme 2 of radio wave magnitude of voltage V of normal open circuit operation shortly IN(=Va) is the magnitude of voltage V shown in the above-mentioned formula (2) 2, and therefore, as shown in Figure 7, be input to the terminal V of control computer 23 10To V 13The signal mode of creating by comparative result have and be used for magnitude of voltage V 4The corresponding low value of the comparison circuit COM4 that compares, and have corresponding high value with other comparison circuits COM2 to COM4.
Detecting radio wave but with whether detecting game ball 31 in the irrelevant operator scheme 3, magnitude of voltage V IN(=Va) is the magnitude of voltage V shown in the above-mentioned formula (3) 3, and therefore, as shown in Figure 7, be input to the terminal V of control computer 23 10To V 13The signal mode of creating by comparative result have and be used for magnitude of voltage V 7And V 9Comparison circuit COM3 that compares and COM4 corresponding one high value, and have and other comparison circuits COM1 and the corresponding low value of COM2.
In addition, in the operator scheme 4 of incident that taken place to open circuit, magnitude of voltage V as mentioned above INBecome magnitude of voltage Vcc 1, and therefore, as shown in Figure 7, be input to the terminal V of control computer 23 10To V 13The signal mode of creating by comparative result have and be used for magnitude of voltage V 4, V 5, V 7, and V 9All comparison circuit COM1 to COM4 that compare corresponding one high value.
In addition, in the operator scheme 5 that short circuit event has taken place, magnitude of voltage V as mentioned above INBecome magnitude of voltage 0, and therefore, as shown in Figure 7, be input to the terminal V of control computer 23 10To V 13The signal mode of creating by comparative result have and be used for magnitude of voltage V 4, V 5, V 7, and V 9The corresponding low value of all comparison circuit COM1 to COM4 that compares.
Next, the control computer 23 that uses two-wire electronic switch 21 is described.
Control computer 23 offers terminal V according to interface circuit 22 10To V 13Signal mode carry out game ball 31 and detect and handle.If offer terminal V 10To V 13Signal mode be (V 10, V 11, V 12, V 13)=(is low, and be low, low, height), control computer 23 operator schemes so and be set to mode number 1 among Fig. 8, and identify and do not detect game ball 31 and do not detect radio wave.
In addition, if offer terminal V 10To V 13Signal mode be (V 10, V 11, V 12, V 13)=(is low, height, height, height), control computer 23 operator schemes so and be set to mode number 2 among Fig. 8, and identify and detect game ball 31 but do not detect the such state of radio wave.More precisely, in this case, control computer 23 identifies game ball 31 and has won a prize and carry out the such processing of game ball that is used to pay the respective specified number.
In addition, if offer terminal V 10To V 13Signal mode be (V 10, V 11, V 12, V 13)=(is low, and be low, height, height), control computer 23 operator schemes so and be set to mode number 3 among Fig. 8, and identify and detect the such state of radio wave.More precisely, in this case, control computer 23 identifies has violated the illegal act that it produces highfield, and therefore to hall computer notice, perhaps reports to the office worker of recreation corridor illegal act or the like to have occurred.
In addition, if offer terminal V 10To V 13Signal mode be (V 10, V 11, V 12, V 13)=(height, height, height, height), control computer 23 operator schemes so and be set to mode number 4 among Fig. 8, and identify the such state of incident has taken place to open circuit.Therefore more precisely, in this case, control computer 23 identifies the incident that opens circuit that taken place, and to hall computer notice, perhaps reports to the office worker of recreation corridor and has taken place to open circuit or the like.
In addition, if offer terminal V 10To V 13Signal mode be (V 10, V 11, V 12, V 13)=(is low, and be low, low, low), control computer 23 operator schemes so and be set to mode number 5 among Fig. 8, and identify the such state of short circuit event has taken place.More precisely, in this case, control computer 23 identifies short circuit event has taken place, and therefore to hall computer notice, perhaps reports to the office worker of recreation corridor short circuit event or the like has taken place.
By means of above-mentioned processing, the differential voltage of the power end by changing electronic switch 21, so during being used to be illustrated in normal running the existence or non-existent two category informations of game ball, also can according to the judgment model of interface circuit 22 determine radio wave detect the existence of information or do not exist, the incident that opens circuit and short circuit event.
Next, with reference to the flow chart of figure 9 voltage between 21 pairs of outputs of electronic switch shown in Figure 4 being carried out switching processing is described.
At step S1, operation signal decision circuit 53 and radio wave testing circuit 54 judge whether not detect radio wave and have detected game ball, if and do not detect radio wave and do not detect game ball, to offer output circuit 57 based on the signal of this judged result so, and this reprocessing advances to step S2, if if instead detected radio wave or detected game ball, handle so and advance to step S3.
At step S2, in output circuit 57, according to the signal that operation signal decision circuit 53 and radio wave testing circuit 54 are provided, transistor Tr 1, Tr 2, Tr 4Conducting and transistor Tr 3Disconnect.Consequently, output circuit 57 switches to magnitude of voltage V with the potential difference (Va-Vb) of output 1And export this magnitude of voltage.
At step S3, operation signal decision circuit 53 and radio wave testing circuit 54 judge whether not detect radio wave and have detected game ball, if and do not detect radio wave but detected game ball, to offer output circuit 57 based on the signal of this judged result so, and this reprocessing advances to step S4, if if instead detected radio wave or detected game ball, handle so and advance to step S5.
At step S4, in output circuit 57, according to the signal that operation signal decision circuit 53 and radio wave testing circuit 54 are provided, transistor Tr 1To Tr 3Disconnect and transistor Tr 4Conducting.Consequently, output circuit 57 switches to magnitude of voltage V with the potential difference (Va-Vb) of output 2And export this magnitude of voltage.
At step S5, radio wave testing circuit 54 judges whether to detect radio wave, if and detected radio wave, to offer output circuit 57 based on the signal of this judged result so, and handle and advance to step S6, if instead do not detect radio wave, handle so and advance to step S7.
At step S6, according to the signal that radio wave testing circuit 54 is provided, the transistor Tr of output circuit 57 4Disconnect and transistor Tr 1, Tr 3Conducting (state of transistor Tr 2 is irrelevant).Consequently, output circuit 57 switches to magnitude of voltage V with the potential difference (Va-Vb) of output 2And export this magnitude of voltage.
At step S7, judge whether incident to have taken place to open circuit (in practical operation, always do not carry out judgment processing, but suppose this judgement of executed usually) and if the incident that opens circuit taken place, handle so and advance to step S8, if instead do not open circuit incident, handle so and advance to step S9.
At step S8, the fact that has taken place to open circuit in electronic switch 21 is meant that the output potential between the output poor (Va-Vb) is a power source voltage Vcc 1Magnitude of voltage Vcc 1
At step S9, judge whether short circuit event to have taken place (in practical operation, always do not carry out judgment processing, but suppose this judgement of executed usually), and if short circuit event taken place, handle so and advance to step S10, if instead the incident of not being short-circuited is handled so and got back to step S1.
At step S10, the fact that short circuit event taken place in electronic switch 21 is meant potential difference (Va-Vb) between the output by short circuit, and therefore output valve 0.
According to the above description, output circuit 57 changes output voltage between following at least one or a plurality of intermediate voltage value according to the mode of operation of two-wire electronic switch 21, described intermediate voltage value is less than supply voltage value and greater than the earthed voltage value, if and to have detected be exactly the game ball of detected object body, exporting it so equals or near a magnitude of voltage of power supply power values, if do not detect game ball, exporting it so equals or near a magnitude of voltage of earthed voltage value, if and detect radio wave, export following intermediate voltage value so, this intermediate voltage is less than supply voltage value or near a magnitude of voltage of supply voltage value and greater than the earthed voltage value or near a magnitude of voltage of earthed voltage value.Therefore can suppress the illegal act that it uses strong radio wave.
In addition, because use such as the such fixed voltage element of diode, Zener diode or the like, so the output voltage values V of electronic switch 21 1And V 3Can not be subjected to the influence of the variation or the like of external impedance, applied voltage.Therefore, these magnitudes of voltage can be set accurately.On the other hand, output voltage values V 2Can also be fixed voltage value, it be with respect to Vcc 1Difference (R 1* I 1) can not be subjected to the influence of surrounding environment.
In addition, as shown in Figure 7, by with magnitude of voltage V 7With magnitude of voltage V 9Be set to the normally closed magnitude of voltage V of the output voltage of electronic switch 21 1Bound and with magnitude of voltage V 5With magnitude of voltage V 7Be set to output voltage values V when detecting radio wave 3Bound judge.Consequently, can limit it is identified as normal zone and the Identification of events district (power source voltage Vcc that opens circuit can be set 1With magnitude of voltage V 4Between) and short circuit event cog region (magnitude of voltage V 9Therefore and between the earthed voltage value 0), and can detect the existence of game ball 31 or do not exist, and can discern based on the illegal act that utilizes strong radio wave, accidental opening circuit or accidental short circuit also can be detected.
The upper limit or lower limit have been surpassed (if be judged as magnitude of voltage V if judge magnitude of voltage output during the open circuit operation 2), so as shown in figure 10 in the fixed current circuit I 2With resistance R 4Between resistance R is provided 6, and make the fixed current circuit I 2With resistance R 6Intermediate potential the negative input end of the comparison circuit COM3 that newly provides is provided, in the comparison circuit COM3 that newly provides with this intermediate potential and magnitude of voltage V INCompare, with the result except offering above-mentioned terminal V 10To V 13Outside also offer be arranged in control computer 23 terminal V 14(undeclared).In addition, in this case, resistance R 6Must be adjustable so that resistance value (R 4+ R 6) (R wherein 4And R 6It is resistance R 4And R 6Respective resistivity values) greater than resistance R 1Resistance value R 1Therefore, as shown in Figure 7, it is set less than magnitude of voltage V 2And greater than magnitude of voltage V 5A magnitude of voltage V 14In addition, in this case, with operator scheme 1 to the 5 corresponding pattern that it includes comparison circuit COM5 be operator scheme (1,2,3,4,5)=(low, height, low, height, low).Here, Figure 10 has provided the resistance R of the interface circuit 22 among Fig. 6 4, the fixed current circuit I 2, and the enlarged drawing of the structure of comparison circuit COM1 and COM2, and provided the example that new comparison circuit COM5 is provided.
In addition, desired voltage values V 1And V 3Judgment value and marginal voltage value V up and down 9, V 7, V 5Between difference α very little, allow the permissible range (for example, the 0.6V among the Fig. 7 of difference α=approximately) of fluctuation simultaneously.This is meant that difference α is more little, and the reference voltage of the output circuit 57 of electronic switch 21 and interface circuit 22 is created circuit 71, and to have a requirement of the characteristic that matches big more.In other words, magnitude of voltage V 1With magnitude of voltage V 8And magnitude of voltage V 3With magnitude of voltage V 5Must have identical value.Therefore, even illegal electronic switch 21 links to each other with interface circuit 22, also be difficult to carry out, and therefore can suppress illegal act as the operation that detects game ball 31.
The example of two-wire electronic switch 21 has been described above, even but under the situation of three-way electronic switch 21, also can have both to the existence of game ball 31 or non-existent detection and to the existence or the non-existent detection of radio wave.
Figure 11 has provided and can or not exist and the existence of radio wave or do not have the structure of an embodiment of the two three-way electronic switch 21 that detects the existence of game ball 31.Utilize same reference numbers to come the identical structure division of mark and electronic switch shown in Figure 4 21, and omit explanation here it.
In three-way electronic switch 21 shown in Figure 11, be that with the difference of two-wire electronic switch 21 shown in Figure 4 it comprises power source voltage Vcc 2, fixed voltage circuit 101, operation signal decision circuit 103 and output circuit 102, to replace power source voltage Vcc 1, the fixed current circuit I 1, Zener diode ZD 2, operation signal decision circuit 53 and output circuit 57.
In addition, operation signal decision circuit 103 has and operation signal decision circuit 53 identical operations basically, but this processing is in the situation that detects game ball 31 and do not detect between the situation of game ball 31 and switch, if and, so electric current is offered NPN transistor Tr according to have detected game ball 31 contiguous by the detection ripple that detects ripple integrating circuit 52 and provided being carried out signal that integration obtained 12Base stage, thereby NPN transistor Tr 12Conducting.On the other hand, if do not detect game ball 31, operation signal decision circuit 53 stops electric current being offered NPN transistor Tr so 12Base stage and with NPN transistor Tr 12Be set to the OFF state.
In Fig. 4, radio wave testing circuit 54 signal that the output of itself and amplifying circuit 55 and see-saw circuit 56 is similar offers the NPN transistor Tr of output circuit 102 11Therefore, when detecting radio wave, radio wave testing circuit 54 can make the current direction transistor Tr 11Base stage, thereby turn-on transistor Tr 11If, and do not detect radio wave, disconnect transistor Tr so 11
Output circuit 102 receives the power supply from terminal Va and GND, and has produced a magnitude of voltage that is used to represent mode of operation according to the signal from operation signal decision circuit 103 and radio wave testing circuit 54.It is exported this magnitude of voltage from terminal Vout.Here, terminal GND ground connection.In addition, terminal Vout passes through resistance R 13And on draw.
Diode D 13Anode link to each other with the terminal Va of output circuit 102.In addition, diode D 13The resistance R of negative electrode by being connected in series 11And R 12GND links to each other with terminal.Terminal Vout, diode D 14Anode and NPN transistor Tr 11Collector electrode and resistance R 11With R 12Between the centre position link to each other.Diode D 14Negative electrode and NPN transistor Tr 12Collector electrode link to each other.NPN transistor Tr 12Emitter link to each other with the GND terminal.In addition, NPN transistor Tr 11Emitter link to each other with the GND terminal.
More precisely, diode D 14With NPN transistor Tr 12Collector electrode-emitter and resistance R 12Parallel connection, and similarly, NPN transistor Tr 11Collector electrode-emitter and resistance R 12In parallel.Therefore, in radio wave testing circuit 54, when detecting radio wave, transistor Tr 11Conducting, and therefore, terminal Vout has the current potential identical with terminal GND, and with whether to detect game ball 31 irrelevant.In addition, resistance R 12Has the resistance R of ratio 11And R 13Enough big resistance value.
Next, the operation to electronic switch shown in Figure 11 21 is described.
Do not detecting radio wave and do not detecting under the state of game ball 31, radio wave testing circuit 54 does not make current flowing to NPN transistor Tr 11Base stage, and therefore NPN transistor Tr 11Disconnect.In addition, operation signal decision circuit 103 does not make current flowing to NPN transistor Tr 12Base stage.Therefore, also suppose NPN transistor Tr 12Be in the OFF state.In addition, as mentioned above, because resistance R 12Has the resistance R of ratio 11And R 13Enough big resistance value, so the current potential on the Vout terminal is shown in following formula (10).
V 21＝Vcc 2-VD 13 (10)
Here, V 21Be not detect radio wave but detected the magnitude of voltage of the state lower terminal Vout of game ball 31, Vcc 2It is power source voltage Vcc 2Magnitude of voltage, and VD 11Be diode D 11Voltage on the terminal.
In addition, do not detecting radio wave but detected under the state of game ball 31, similar with above-mentioned situation, radio wave testing circuit 54 does not make current flowing to NPN transistor Tr 11Base stage, and therefore NPN transistor Tr 11Disconnect.In addition, operation signal decision circuit 53 offers NPN transistor Tr with electric current 12Base stage.Therefore, NPN transistor Tr 12Conducting.Here, as mentioned above, because resistance R 12Has the resistance R of ratio 11And R 13Therefore enough big resistance value is applied to diode D with the voltage shown in the following formula (10) 14On.
V 22≌VD 14 (11)
Here, V 22Be not detect radio wave but detected the magnitude of voltage of the state lower terminal Vout of game ball 31, and VD 12Be to be applied to diode D 12On voltage.
In addition, when detecting radio wave, radio wave testing circuit 54 makes current flowing to NPN transistor Tr 11Base stage and therefore NPN transistor Tr 11Conducting.Therefore, terminal Vout and GND short circuit, and whether output current is irrelevant with operation signal decision circuit 103.Consequently, the magnitude of voltage of terminal Vout is shown in following formula (12).
V 23＝0 (12)
Here, V 23Be at the current potential that detects on the situation lower terminal Vout of radio wave.
In addition, if because certain class in the electronic switch 21 is former thereby the short circuit event between incident or terminal Va and the Vout of having taken place to open circuit, so because resistance R 12Has the resistance R of ratio 11And R 13Want big resistance value, so the current potential on the Vout terminal is near Vcc2.
In addition, if for a certain reason and have short circuit event between the terminal GND of electronic switch 21 and Vout, the current potential on the terminal Vout becomes 0 so.
According to this pattern, three-way electronic switch 21 according to the existence of detected object body or do not exist and the changed condition relevant with highfield can obtain and open circuit incident or short circuit event relevant by above-mentioned formula (10) to the voltage V shown in the formula (12) 21, V 22, and V 23Perhaps voltage vcc 2Or 0.
Next, be described with reference to Figure 12 pair of structure with three-way electronic switch 21 corresponding interface circuits 22.Utilize same reference numbers come the total structure division of mark and electronic switch shown in Figure 11 21 or with electronic switch shown in Figure 11 21 identical structure, and omit explanation here to it.The magnitude of voltage that reference voltage is created circuit 111 to be provided according to terminal Vout has produced four different reference voltage levels, and these reference voltage levels is offered the negative input end of comparison circuit COM1 to COM4 respectively.
Comparison circuit COM1 to COM4 creates reference voltage that circuit 111 offers four reference voltage levels of respective negative input and the magnitude of voltage that is input to positive input terminal that terminal Vout is provided compares, and they offer corresponding comparative result the terminal V of control computer 23 31To V 34
Create in the circuit 111 resistance R at reference voltage 21To R 27According to power source voltage Vcc 2And the order between the earth potential and being connected in series, and will promptly be exactly resistance R 21With resistance R 22Between the magnitude of voltage V of intermediate potential 24Offer the negative input end of comparison circuit COM 11.To promptly be exactly resistance R 23With resistance R 24Between the magnitude of voltage V of intermediate potential 26Offer the negative input end of comparison circuit COM12.To promptly be exactly resistance R 24With resistance R 25Between the magnitude of voltage V of intermediate potential 27Offer the negative input end of comparison circuit COM13.To promptly be exactly resistance R 26With resistance R 27Between the magnitude of voltage V of intermediate potential 29Offer the negative input end of comparison circuit COM14.
In addition, PNP transistor Tr 21Emitter and power source voltage Vcc 2Link to each other and its base stage and resistance R 22With resistance R 23Between intermediate potential (have and magnitude of voltage V 25One position of same potential) links to each other.In addition, PNP transistor Tr 21Collector electrode and resistance R 23With resistance R 24Intermediate potential link to each other.The PNP transistor Tr 21The link to each other current potential of position of collector electrode be called as magnitude of voltage V 26
In addition, NPN transistor Tr 22Collector electrode and resistance R 24With resistance R 25Intermediate potential (with magnitude of voltage V 27One position of same potential) link to each other, and base stage and resistance R 25With resistance R 26Intermediate potential link to each other.NPN transistor Tr 22The link to each other current potential of position of base stage be called as magnitude of voltage V 28
Resistance R 21To R 23And resistance R 25To R 27Be identical.In addition, use its element, by this diode D with such characteristic 13(Figure 11) with the PNP transistor Tr 21Base-emitter voltage Vbe and diode D 14(Figure 11) with the PNP transistor Tr 22Base-emitter voltage Vbe identical.In order to make characteristic standardization, also can make the PNP transistor Tr according to this pattern 21With NPN transistor Tr 22Use EB junction type diode, to replace diode D shown in Figure 11 13And D 14
In addition, because resistance R 21To R 23And resistance R 25To R 27Identical respectively, so power source voltage Vcc 2With V 25Between voltage be the PNP transistor Tr 21Base-emitter voltage Vbe, and ground potential GND and V 28Between voltage be NPN transistor Tr 22Base-emitter voltage Vbe, therefore and reference voltage is created magnitude of voltage V in the circuit 111 24To V 29Shown in following formula (13) formula (18).
V 24＝Vcc 2-0.5×Vbe (V 24＞V 21)
...(13)
V 25＝Vcc 2-Vbe (V 25≌V 21)
...(14)
V 26＝Vcc 2-1.5×Vbe (V 21＞V 26)
...(15)
V 27＝1.5×Vbe (V 27＞V 22)
...(16)
V 28＝Vbe (V 28≌V 22)
...(17)
V 29＝0.5×Vbe (V 29＞V 23&V 22＞V 29)
...(18)
Therefore, as shown in figure 13, always make magnitude of voltage V 21To V 29Amplitude between relation keep identical, and and power source voltage Vcc 2Magnitude of voltage Vcc 2Variation and external relations change irrelevant.
Figure 13 has provided the relation between the amplitude of magnitude of voltage V21 to V29, and wherein, transverse axis is represented power source voltage Vcc 2And the longitudinal axis is represented the voltage of output end vo ut.In addition, the magnitude of voltage of the Vout of electronic switch 21 end is identical with the magnitude of voltage of interface circuit 22, only the incident otherwise existence is opened circuit.
Magnitude of voltage Vcc 2With V 21To V 29Amplitude between relation be: according to order from maximum to minimum value, magnitude of voltage Vcc 2, V 24, V 21(=V 25), V 26, V 27, V 22(=V 28), V 29, V 23, and and power source voltage Vcc 2Magnitude of voltage Vcc 2The variation and the variation of external relations irrelevant.Here, magnitude of voltage V 24To V 26Be positioned at power source voltage Vcc 2Afterwards and therefore they are according to magnitude of voltage Vcc 2Variation and on the chart right side, rise, but keep amplitude relation.By considering the range of voltage values V among Figure 13 mTo V nCome it has been formed the power source voltage Vcc of the fixation application voltage of electronic switch 21 2Be provided with.
In addition, as discussed previously, R 21To R 23And R 25To R 27Be identical, and the PNP transistor Tr 21Base-emitter voltage Vbe and NPN transistor Tr 22Base-emitter voltage Vbe be identical.Therefore, magnitude of voltage V 24With magnitude of voltage V 25Between potential difference (V 24-V 25), magnitude of voltage V 25With magnitude of voltage V 26Between potential difference (V 25-V 26), magnitude of voltage V 27With magnitude of voltage V 28Between potential difference (V 27-V 28) and magnitude of voltage V 28With magnitude of voltage V 29Between potential difference (V 28-V 29) all are 0.5Vbe (=β: Figure 13).
Because offer the magnitude of voltage of the negative input end of comparison circuit COM11 to COM14 is magnitude of voltage V 24, V 25, V 27, and V 29(magnitude of voltage shown in the dotted line difference among Figure 13), comparison circuit COM11 to COM14 will be to output V so INMagnitude of voltage V INWith magnitude of voltage V 24, V 26, V 29Between the comparative result that compares output to the terminal V of control computer 23 31To V 34
Here, as mentioned above, it is exactly above-mentioned voltage V that the terminal Vout that can learn at electronic switch shown in Figure 11 21 has obtained 21To V 23, Vcc 2, or five different values of 0, and therefore, will be input to the terminal V of control computer 23 31To V 34The signal mode of comparative result that is used to represent comparison circuit COM11 to COM14 be divided into as shown in figure 14 four patterns.
Detect game ball 31 and do not detecting in the operator scheme 1 of radio wave magnitude of voltage V IN(=Vout) is the magnitude of voltage V shown in the above-mentioned formula (11) 22, and therefore, as shown in figure 14, be input to the terminal V of control computer 23 31To V 34The signal mode of creating by comparative result have and be used for magnitude of voltage V 29The comparison circuit COM14 that compares corresponding one high value, and have corresponding low value with other comparison circuits COM11 to COM13.
Do not detect game ball 31 and do not detecting in the operator scheme 2 of radio wave magnitude of voltage V IN(=Vout) is the magnitude of voltage V shown in the above-mentioned formula (10) 21, and therefore, as shown in figure 14, be input to the terminal V of control computer 23 31To V 34The signal mode of creating by comparative result have and be used for magnitude of voltage V 24The corresponding low value of the comparison circuit COM11 that compares, and have corresponding high value with other comparison circuits COM12 to COM14.
In addition, incident or terminal Va and Vout have taken place to open circuit in the operator scheme 3 of short circuit, magnitude of voltage V detecting INBecome above-mentioned magnitude of voltage Vcc 2, and therefore, as shown in figure 14, be input to the terminal V of control computer 23 31To V 34The signal mode of creating by comparative result have and be used for magnitude of voltage V 24, V 25, V 27, and V 29All comparison circuit COM11 to 14 that compare corresponding one high value.
In addition, detecting radio wave or terminal GND and Vout short circuit and with whether detecting game ball 31 in the irrelevant operator scheme 4, magnitude of voltage V IN(=Vout) becomes magnitude of voltage V as shown in Equation (12) 23, and therefore, as shown in figure 14, be input to the terminal V of control computer 23 31To V 34The signal mode of creating by comparative result have and be used for magnitude of voltage V 24, V 25, V 27, and V 29The corresponding low value of all comparison circuit COM11 to 14 that compares.
Next, use the control computer 23 of three-way electronic switch 21 to be described to it.
Control computer 23 offers terminal V according to interface circuit 22 31To V 34Signal mode carry out game ball 31 and detect and handle.
If offer terminal V 31To V 34Signal mode be (V 31, V 32, V 33, V 34)=(is low, and be low, low, height), control computer 23 operator schemes so and be set to operator scheme 1 among Figure 14, and identify and detect game ball 31 and do not detect the such state of radio wave.More precisely, in this case, control computer 23 identifies game ball 31 and has won a prize and carry out the such processing of game ball that is used to pay the respective specified number.
In addition, if offer terminal V 31To V 34Signal mode be (V 31, V 32, V 33, V 34)=(is low, height, height, height), control computer 23 operator schemes so and be set to mode number 2 among Figure 14, and identify and detect game ball 31 and do not detect the such state of radio wave.
In addition, if by terminal V 31To V 34The signal mode that is provided is (V 31, V 32, V 33, V 34)=(height, high, high, high), control computer 23 operator schemes so and be set to mode number 3 among Figure 14, therefore identify the short circuit that has taken place to open circuit between incident or terminal Va and the Vout, and to hall computer notice, perhaps report incident or short circuit event or the like to have occurred opening circuit to the office worker of recreation corridor.
In addition, if offer terminal V 31To V 34Signal mode be (V 31, V 32, V 33, V 34)=(is low, and be low, low, low), control computer 23 operator schemes so and be set to mode number 4 among Figure 14, and identify and detect radio wave or the such state of short circuit event has taken place between terminal GND and Vout.More precisely, in this case, control computer 23 identifies and detects radio wave or short circuit event has taken place, and therefore to hall computer notice, perhaps reports to the office worker of recreation corridor short circuit or the like has taken place.
By means of above-mentioned processing, by the voltage on the output that changes electronic switch 21, after this during being used to be illustrated in normal running the existence or non-existent two category informations of game ball, also can according to the judgment model of interface circuit 22 determine radio wave detect the existence of information or do not exist, the incident that opens circuit and short circuit event.
Next, with reference to the flow chart among Figure 15 the output voltage values on 21 pairs of Vout terminals of electronic switch shown in Figure 11 being carried out switching processing is described.
At step S21, operation signal decision circuit 103 and radio wave testing circuit 54 judge whether not detect radio wave and have detected game ball, if and do not detect radio wave but do not detect game ball, to offer output circuit 102 based on the signal of this judged result so, and this reprocessing advances to step S22, if if instead detected radio wave or do not detected game ball, handle so and advance to step S23.
At step S22, in output circuit 102, according to the signal that operation signal decision circuit 103 and radio wave testing circuit 54 are provided, transistor Tr 11Disconnect and transistor Tr 12Conducting.Consequently, output circuit 102 switches to the output voltage values V of terminal Vout 21And export this magnitude of voltage.
At step S23, operation signal decision circuit 103 and radio wave testing circuit 54 judge whether to detect radio wave and have detected game ball, if and do not detect radio wave and do not detect game ball, to offer output circuit 102 so based on the signal of this judged result and handle and after this advance to step S24, if if instead detected radio wave or detected game ball, handle so and advance to step S25.
At step S24, in output circuit 102, according to the signal that operation signal decision circuit 103 and radio wave testing circuit 54 are provided, transistor Tr 11And Tr 12Disconnect.Consequently, output circuit 102 switches to the output voltage values V of terminal Vout 22And export this magnitude of voltage.
At step S25, judge whether to have taken place to open circuit short circuit between incident or terminal Va and the Vout (in practical operation, always do not carry out judgment processing, but suppose this judgement of executed usually), if and the short circuit between incident or Va and the Vout of having taken place to open circuit, handle so and advance to step S26,, handle so and advance to step S27 if instead do not open circuit incident.
At step S26, the fact of the short circuit between incident or terminal Va and the Vout that taken place to open circuit in electronic switch 21 is meant from terminal V INExported power source voltage Vcc 2Magnitude of voltage Vcc 2
At step S27, judge whether to detect radio wave or whether between terminal GND and Vout, short circuit has taken place, if and if detected radio wave or between terminal GND and Vout, short circuit has taken place, handle so and advance to step S28, if instead do not detect radio wave, handle so and advance to step S1.
At step S28, the fact that has detected radio wave or short circuit taken place between terminal GND and Vout in electronic switch 21 is meant from terminal Vout output 0.
Respectively at magnitude of voltage V 24With magnitude of voltage V 26The magnitude of voltage V of judgement when not detecting game ball 21Bound, and at magnitude of voltage V 21With magnitude of voltage V 29The magnitude of voltage V of judgement when detecting game ball 22Bound.When detecting radio wave, to magnitude of voltage V 23Execution is based on magnitude of voltage V 29Threshold decision.Similar with the situation of Fig. 7, the expectation judgment threshold is closer to each other, allows simultaneously to be higher than and is lower than fluctuation check limit (for example, the difference β among Figure 14 is about 0.3V).Similar with the situation of two-wire electronic switch 21, difference β is more little, and the reference voltage of the output circuit 57 of electronic switch 21 and interface circuit 22 is created circuit 71, and to have a requirement of the characteristic that matches big more.In other words, magnitude of voltage V 21With magnitude of voltage V 25And magnitude of voltage V 22With magnitude of voltage V 28Must have identical value.Therefore, even illegal electronic switch 21 links to each other with interface circuit 22, also be difficult to carry out, and therefore can suppress illegal act as the operation that detects game ball 31.
According to the above description, output circuit 102 can change it less than supply voltage value and greater than the output voltage between at least one or a plurality of intermediate voltage value of earthed voltage value according to the mode of operation of three-way electronic switch 21, if and detected the detected object body, export it so less than supply voltage value and greater than first output voltage values of earthed voltage value, if do not detect the detected object body, export it so less than supply voltage value and greater than second output voltage of earthed voltage value, if and detected radio wave, would export it so and equal or equal or near a magnitude of voltage of earthed voltage value near a magnitude of voltage of supply voltage value or its.Therefore, can suppress based on the illegal act that utilizes strong radio wave.
In electronic switch shown in Figure 11 21, the magnitude of voltage V that when detecting radio wave, is exported 23Near earthing potential, but also can it be set near power source voltage Vcc 2A voltage.
Figure 16 has provided the structural representation of an embodiment of three-way electronic switch 21, the magnitude of voltage V that is exported when detecting radio wave in this three-way electronic switch 21 23Near power source voltage Vcc 2Utilize same reference numbers to come the identical structure division of mark and electronic switch shown in Figure 11 21, and omit explanation here it.
The electronic switch 21 shown in Figure 16 and the difference of the electronic switch 21 among Figure 11 are to provide output circuit 121, resistance R 47, and power source voltage Vcc 3To replace output circuit 102, resistance R 13, and power source voltage Vcc 2Such fact.
In output circuit 121, resistance R 42And R 41And NPN transistor Tr 31Collector electrode-emitter be connected in series between Va and the GND terminal.In addition similarly, resistance R 44And R 43With NPN transistor Tr 33Collector electrode-emitter be connected in series between Va and the GND terminal.In addition, resistance R 45And R 46And diode D 22Be connected in series between terminal Va and the GND.
NPN transistor Tr 31Base stage link to each other with radio wave testing circuit 54.The PNP transistor Tr 32Emitter-collector electrode (wherein emitter links to each other and collector electrode and resistance R with terminal Va 45And R 46Intermediate potential link to each other) and resistance R 45Parallel connection, and base stage and resistance R 41With R 42Intermediate potential link to each other.In addition, NPN transistor Tr 34Emitter-collector electrode and diode D 21(wherein emitter links to each other with terminal Va, collector electrode and diode D 21Input terminal link to each other and diode D 21Negative electrode and resistance R 45And R 46Intermediate potential link to each other) also with resistance R 45Parallel connection and base stage and resistance R 43And R 44Intermediate potential link to each other.Terminal Vout and resistance R 45With R 46Intermediate potential link to each other.In addition, resistance R 45Has the resistance R of ratio 46And R 47Enough big resistance value.In addition, diode D 21And D 22With the diode D among Figure 11 13And D 14Identical.
More precisely, if detect radio wave, transistor Tr so 31And Tr 32Conducting.Therefore, suppose that terminal Vout is near power source voltage Vcc 3Magnitude of voltage Vcc 3One the value.In addition, if do not detect radio wave and do not detect game ball 31, transistor Tr so 33And Tr 34Conducting.Therefore, the magnitude of voltage of Vout terminal becomes Vout=Vcc 3-VD 21In addition, if do not detect radio wave but do not detect game ball, transistor Tr so 33And Tr 34Disconnect.Therefore, Vout becomes Vout ≌ VD 22
In interface circuit 22 and control computer 23, carry out similar processing, and therefore omit further specifying here it.
Above-mentioned declarative description such processing, the purpose of this processing is that when detecting radio wave the generation of identification illegal act and the office worker to the recreation corridor report this.Yet, radio wave detected itself be meant not necessarily that the radio wave purpose is to carry out illegal act, if and when detecting radio wave, just report the possibility of illegal act, the office worker must check the situation of each occasion so, if and repeated therefore to report that its purpose does not lie in the radio wave of carrying out illegal act, this will hinder the processing that real illegal act is detected so.
Therefore, when detecting radio wave, by stopping being exactly to detect actual detected that the game ball 31 of body carries out to handle and to prevent illegal act (that is to say and keep mode of operation).
Figure 17 has provided the structure with an embodiment of two-wire electronic switch 21 corresponding interface circuits 22, keeps when detecting radio wave in this two-wire electronic switch 21 being exactly that the detection of the game ball 31 of detected object body is handled.Interface circuit 22 has formed it and has included resistance R 51And R 52, Zener diode ZD 31, diode D 31, the fixed current circuit I 3, and comparison circuit COM 21Detection piece 131.
Resistance R 51With the fixed current circuit I 3Be connected in series in power source voltage Vcc 1And between the earthing potential.Diode D 31Anode and resistance R 51With the fixed current circuit I 3Between the centre position link to each other and negative electrode and Zener diode ZD 31Anode link to each other.Zener diode ZD 31Negative electrode pass through resistance R 52With power source voltage Vcc 1Link to each other.In addition, resistance R 51With the fixed current circuit I 3Between the current potential in centre position be input to the positive input terminal of comparison circuit COM21.The voltage of terminal Va is input to the negative input end of comparison circuit COM21.The output of comparison circuit COM21 and Zener diode ZD 31With resistance R 52Between intermediate potential link to each other, and it also with the terminal V of control computer 23 42Link to each other.The low potential side terminal Vb of electronic switch 21 links to each other with earth potential.By means of this circuit structure, formed it and included resistance R 51And R 52, Zener diode ZD 31, diode D 31, the fixed current circuit I 3, and the regenerative circuit of comparison circuit 21.
Zener diode ZD 1(Fig. 4) with Zener diode ZD 31, the fixed current circuit I 1(Fig. 4) with fixed current circuit I 3 and diode D 1, D 2(Fig. 4) with diode D 31Have identical characteristics respectively.With resistance R 51Be set to compare resistance R 1High steady state value, and comparison circuit COM21 is an open collector output type circuit.
Next, the operation to the interface circuit among Figure 17 22 is described.
When electronic switch 21 is carried out closed procedures (not detecting game ball), the voltage V of terminal Va so INBe V 1Because comparison circuit COM21 is in open-circuit condition, and at diode D 31Oppositely on applied voltage, so magnitude of voltage V 41Be by resistance R 51With the fixed current circuit I 3Determine.On the other hand, when electronic switch 21 is carried out open circuit operation (detecting game ball), the output of comparison circuit COM21 becomes 0V so.Therefore, diode D 31With Zener diode ZD 31Become effectively, and magnitude of voltage V 41Become low-potential state.
Therefore, it has formed the magnitude of voltage V of input voltage of the positive input terminal of comparison circuit COM21 41Adopt two values shown in following formula (19) and the formula (20).
V 41Hi=Vcc 1-R 51* I 3(the plus end voltage during the closed procedure)
...(19)
V 41Lo=VZD 3+ VD 31(the plus end voltage during the open circuit operation)
...(20)
Here, because resistance R 51Greater than resistance R 1And fixed current circuit I 1With the fixed current circuit I 3Have identical characteristics, so magnitude of voltage V 41Hi is less than V 2, that is to say V 2＞V 41Hi.Therefore, in interface circuit shown in Figure 17 22, can set up following formula (21) and the represented relation of formula (22).
V 3＞V 41lo＞V 1
...(21)
V 2＞V 41hi＞V 3
...(22)
Always keep the above-mentioned relation between the current potential, and and power source voltage Vcc 1The variation or the variation of peripheral reference irrelevant.
More precisely, according to the mode of operation of comparison circuit COM21, its form the magnitude of voltage V of input voltage of positive input terminal of comparison circuit COM21 41Become 0V during the open circuit operation and during closed procedure, becoming V 41Hi.Consequently, even for example make magnitude of voltage V owing to detecting radio wave 3Be input to the negative input end of comparison circuit COM21, this also can not change the operation of comparison circuit COM21.
With regard to the number that obtains game ball 31, think and when closure state (not detecting the state of game ball 31) becomes open-circuit condition (detecting the state of game ball 31) and after this become closure state (not detecting the state of game ball 31) again, win a game ball 31 when switch.Therefore, according to interface circuit shown in Figure 17 22, even make magnitude of voltage V owing to detecting radio wave 3Be input to the negative input end of comparison circuit COM21, also can not from open-circuit condition become closure state or can not be opposite become open-circuit condition from closure state.Therefore, the number of game ball 31 is not counted and can be suppressed based on the illegal act that utilizes radio wave.
Next, with reference to the flow chart among Figure 18 the hand-off process in the interface circuit 22 shown in Figure 17 is described.
At step S31, for example according to magnitude of voltage V INWhether greater than magnitude of voltage V 41Hi is if make magnitude of voltage V owing to detecting game ball INBecome magnitude of voltage V 2And therefore greater than magnitude of voltage V 41Hi, so at step S32, the output of comparison circuit COM21 (detects game ball) and becomes 0V and so diode D during open circuit operation 31With Zener diode ZD 31Become effectively, and magnitude of voltage V 41Switch to magnitude of voltage V 41Lo.
At step S31, if magnitude of voltage V INBe not more than magnitude of voltage V 41Hi is so for example according to magnitude of voltage V INWhether less than magnitude of voltage V 41Lo is not if make magnitude of voltage V owing to detecting game ball INBecome magnitude of voltage V 1And therefore become less than magnitude of voltage V 41Lo (step S33), so at step S34, magnitude of voltage V INDuring closed procedure, (do not detect game ball) and become V 1, and therefore comparison circuit COM21 supposition is open-circuit condition and at diode D 31Oppositely on apply voltage.Therefore, magnitude of voltage V 41Be by resistance R 51With the fixed current circuit I 3Determine, and therefore, magnitude of voltage V 41Switch to magnitude of voltage V 41Hi.
At step S33, if magnitude of voltage V INBe not less than magnitude of voltage V 41Lo, processing is got back to step S31 and is repeated with reprocessing so.
In other words, when operating according to the time diagram shown in Figure 19, magnitude of voltage V 41Carry out switching as described below.Figure 19 provided from top to bottom be used to represent its existence or non-existent time diagram as the game ball 31 of detected object body, be used to represent to detect radio wave time time diagram and be respectively applied for the magnitude of voltage V shown in the expression solid line INVariation, the magnitude of voltage V shown in the dotted line 41Variation, magnitude of voltage V 42The time diagram of variation.Show the time period that detects game ball 31 or radio wave by the time period shown in the arrow among the figure.
From time t 0To time t 11, do not detect radio wave and do not detect game ball 31.Therefore, magnitude of voltage V INBecome magnitude of voltage V 1And magnitude of voltage V 41Become magnitude of voltage V 41Hi.Therefore, the output of comparison circuit COM21 is supply voltage value Vcc 1
From time t 11To time t 12, do not detect radio wave but detect game ball 31.Therefore, magnitude of voltage V INBecome magnitude of voltage V 2And magnitude of voltage V 41Switch to magnitude of voltage V 41Lo.Therefore, the output vanishing of comparison circuit COM21.
From time t 12To time t 13, this switching becomes the state that radio wave does not detect game ball 31 that do not detect.Therefore, magnitude of voltage V INBecome magnitude of voltage V 1And magnitude of voltage V 41Switch to magnitude of voltage V 41Hi.Therefore, the output of comparison circuit COM21 becomes supply voltage value Vcc 1
From time t 13To time t 21, do not detect radio wave but detect game ball 31.Therefore, magnitude of voltage V INBecome magnitude of voltage V 2And magnitude of voltage V 41Switch to magnitude of voltage V 41Lo.Therefore, the output vanishing of comparison circuit COM21.
From time t 21To t 14, this switching becomes the state that detects radio wave and detect game ball 31, and so magnitude of voltage V INBecome magnitude of voltage V 3Yet, because magnitude of voltage V 41Be magnitude of voltage V 41Lo, so the output of comparison circuit COM21 remains 0.
From time t 14To t 22, detect radio wave but do not detect game ball 31, and therefore magnitude of voltage V INRemain on magnitude of voltage V 3Here, because magnitude of voltage V 41Remain on magnitude of voltage V 41Lo, so the output of comparison circuit COM21 remains 0, and keep not detecting the such state of game ball 31, and irrelevant with the fact that detects radio wave.
From time t 22To time t 23, this switching becomes the state that does not detect radio wave and do not detect game ball 31.Therefore, magnitude of voltage V INBecome magnitude of voltage V 1And magnitude of voltage V 41Switch to magnitude of voltage V 41Hi.Therefore, the output of comparison circuit COM21 switches to supply voltage value Vcc 1
From time t 23To t 24, this switching becomes the state that detects radio wave but do not detect game ball 31, and so magnitude of voltage V INBecome magnitude of voltage V 3Yet, magnitude of voltage V 41Remain on magnitude of voltage V 41Hi, and therefore, the output of comparison circuit COM21 will be supply voltage value Vcc 1, and irrelevant with the fact that detects radio wave.
From time t 24To time t 25, this switching becomes the state that does not detect radio wave and do not detect game ball 31.Therefore, magnitude of voltage V INBecome magnitude of voltage V 1And magnitude of voltage V 41Remain on magnitude of voltage V 41Hi.Therefore, the output of comparison circuit COM21 remains on supply voltage value Vcc 1
From time t 25To t 15, this switching becomes the state that detects radio wave but do not detect game ball 31, and therefore, magnitude of voltage V INBecome magnitude of voltage V 3Yet magnitude of voltage V 41Remain on magnitude of voltage V 41Hi, and therefore, the output of comparison circuit COM21 remains on supply voltage value Vcc 1, and irrelevant with the fact that detects radio wave.
From time t 15To time t 16, this switching becomes the state that detects radio wave and detect game ball 31, but because magnitude of voltage VIN remains on magnitude of voltage V3 and magnitude of voltage V 41Be magnitude of voltage V 41Hi, so the output of comparison circuit COM21 remains on supply voltage value Vcc 1
From time t 16To time t 17, this switching becomes the state that detects radio wave and do not detect game ball 31, but because magnitude of voltage V INRemain on magnitude of voltage V 3And magnitude of voltage V 41Remain on magnitude of voltage V 41Hi, so the output of comparison circuit COM21 remains on supply voltage value Vcc 1, and irrelevant with the fact that detects radio wave.
From time t 17To time t 26, this switching becomes the state that detects radio wave and detect game ball 31, but because magnitude of voltage V INRemain on magnitude of voltage V 3And magnitude of voltage V 41Be magnitude of voltage V 41Hi, so the output of comparison circuit COM21 remains on supply voltage value Vcc 1
From time t 26To time t 18, do not detect radio wave but detect game ball 31.Therefore, magnitude of voltage V INBecome magnitude of voltage V 2And magnitude of voltage V 41Switch to magnitude of voltage V 41Lo.Therefore, the output of comparison circuit COM21 switches to zero.
Consequently, during not detecting the normal condition of radio wave, according to the existence of game ball 31 or there is not to come link voltage value V INAnd V 41And if do not detect game ball, so magnitude of voltage V IN=V 1And magnitude of voltage V 41=V 41Hi, if instead detect game ball, magnitude of voltage V so IN=V2 and magnitude of voltage V 41=V 41Lo.Yet,, make magnitude of voltage V so if make the radio wave irradiation INWith V 41Linked operation interrupt and magnitude of voltage V INBe fixed as V 3In this case, magnitude of voltage V 41Operate according to one in two possibility patterns.
In first operation, for example work as at time t 21With t 22Between when detecting radio wave, be right after under the state that before radio wave is detected, detects game ball magnitude of voltage V so IN=V 2And magnitude of voltage V 41=V 41Lo.Here, even when detecting radio wave and magnitude of voltage V INBecome magnitude of voltage V 3The time, because V 3＞V 41Lo, so the state of comparison circuit COM21 remains unchanged.
In second operation, for example work as at time t 23With t 24Between when detecting radio wave, be right after under the state that before radio wave is detected, does not detect game ball magnitude of voltage V so IN=V 1And magnitude of voltage V 41=V 41Hi.Here, even when detecting radio wave and magnitude of voltage V INBecome magnitude of voltage V 3The time, because V 41Hi＞V 3, so the state of comparison circuit COM21 remains unchanged.Therefore, carry out such operation, during detecting the time period of radio wave, keep being right after the state before radio wave is detected thus.
According to this pattern,, be magnitude of voltage V if offer the magnitude of voltage of the negative input end of comparison circuit COM21 according to interface circuit shown in Figure 17 22 1, it has formed the magnitude of voltage V of decision threshold so 41Switch to magnitude of voltage V 41Hi, this magnitude of voltage V 41Hi is positioned at magnitude of voltage V 2With magnitude of voltage V 3Between, be magnitude of voltage V if instead offer the magnitude of voltage of the negative input end of comparison circuit COM21 2, it has formed the magnitude of voltage V of decision threshold so 41Switch to magnitude of voltage V 41Lo, this magnitude of voltage V 41Lo is positioned at magnitude of voltage V 1With magnitude of voltage V 3Between.Therefore, when detecting radio wave, even detect by 21 pairs of game ball 31 of electronic switch, also can be kept for the operation of comparison circuit COM21 that game ball is counted, and detect the time period of radio wave during making processing postpone it, thereby prevent from the counting of game ball 31 numbers is illegally increased.Therefore, can suppress illegal act.
To be arranged in the situation of interface circuit 22 relevant with detecting piece 131 for above-described example, detects piece 131 and be arranged in equipment except interface circuit 22 but also can make.
Figure 20 has provided the structural representation of incorporating the embodiment that the three-way electronic switch 21 that detects piece 131 is arranged into.Utilize same reference numbers to come the identical structure division of mark and electronic switch shown in Figure 4 21, and omit explanation here it.The structure of electronic switch 21 shown in Figure 20 basically be incorporated into two-wire electronic switch 21 shown in Figure 4 in detection piece 131 identical.More precisely, in the electronic switch 21 in Figure 20, be to provide output circuit 141 replacing output circuit 57 with the difference of electronic switch 21 among Fig. 4, and in addition, increased detection piece 142 and Schmidt's buffer newly.
Output circuit 141 is identical with output circuit 57 basically, and output circuit 141 has the fixed current circuit I of only adding on the output circuit 57 1And resistance R 1, and it has same structure and operation.Therefore, omit further specifying here to it.
It is identical with detection piece 131 to detect piece 142, except the PNP transistor Tr with output circuit 141 1The current potential of emitter be input to the negative input end of comparison circuit COM21 and the output of comparison circuit COM21 offered outside Schmidt's buffer B1.Therefore, omit further specifying here to structure and operation.
Output Va and GND are identical with terminal Va and Vb among Fig. 4.Terminal Vout is by load resistance R 61And on draw.In addition, magnitude of voltage V 71Operation and the magnitude of voltage V among Figure 17 41Operation identical.Therefore, when detecting radio wave, can keep the state of Vout terminal, and therefore, only can suppress based on the illegal act that utilizes radio wave by means of electronic switch shown in Figure 20 21.
With regard to supposing that it is mainly used is Fig. 4, Figure 11 and electronic switch 21 shown in Figure 20 to be described with regard to the situation that game ball 31 is detected, but with respect to for the such various dissimilar electronic switch of people detection device contact-making switch, photoelectric sensor or the like, also suppressing illegal act by means of similar approach.
In addition, Fig. 4, Figure 11 and electronic switch shown in Figure 20 21 are made of semiconductor integrated circuit.In this case, because utilizing same treatment also incorporates Fig. 6, Figure 12 and interface circuit 22 shown in Figure 17 in the semiconductor integrated circuit into, therefore the characteristic of employed element is complementary, and therefore can higher accuracy suppresses illegal act.
According to above-mentioned, because the voltage between a plurality of magnitudes of voltage is exported according to the mode of operation of electronic switch 21 and is switched to earth potential from supply voltage, therefore except the existence of detected object body or not existing, also can to shine on the electronic switch such as radio wave, opening circuit of coupling part or detecting of illegal act that short circuit or the like is such, thereby the fail safe that can improve the pachinko game machine.In addition, because by simply output voltage values being switched and all kinds of modes of operation can be outputed to components downstream, therefore needn't only sequencedly provide new terminal sending abnormal signal, and can realize compatibility with the control circuit of game machine by means of simple structure.Therefore, can improve the fail safe with regard to illegal act, can suppress production cost simultaneously increases.Create circuit by diode, Zener diode, fixed voltage circuit, fixed current circuit or the like being combined as intermediate potential, the characteristic of electronic switch 21 can not be subjected to the influence of outside connection status.In addition, constituted interface circuit by like and similar structures, and by to be used for threshold decision on the boundary setting that judges, can further improve the signal determining ability.Therefore, can suppress such as the such illegal act of the connection of dissimilar electronic switches.In addition, in this specification, " system " represents the overall apparatus by multiple arrangement constituted.

Claims (9)

1. electronic switch, be used for variation by means of signal of telecommunication state detect the existence of a detected object body or do not exist and export this detected object body detection existence or do not exist, this electronic switch comprises:
Detected object body checkout gear is used to detect the existence of described detected object body or does not exist;
The radio wave checkout gear is used to detect radio wave; And
Output device, be used for when detecting a detected object body by described detected object body checkout gear, export first output voltage values, when not detecting described detected object body, export second output voltage values, with when detecting radio wave, export the 3rd output voltage values by the radio wave checkout gear.
2, electronic switch according to claim 1, wherein, first to the 3rd output voltage values is respectively different magnitude of voltage, be respectively equal or near a magnitude of voltage of supply voltage value, equal or near a magnitude of voltage of earthed voltage value or less than supply voltage value but greater than an intermediate voltage value of earthed voltage value.
3. electronic switch according to claim 2, wherein:
Output device comprises switching device, and this switching device is used for output voltage is switched to it less than supply voltage value but greater than at least one or a plurality of intermediate voltage value of earthed voltage value;
First output voltage values is to equal or near a magnitude of voltage of supply voltage value, and second output voltage values is to equal or near a magnitude of voltage of earthed voltage value; And
This output device output switch apparatus switched less than first output voltage values but greater than an intermediate voltage value of second output voltage values with as the 3rd output voltage values.
4. electronic switch according to claim 2, wherein:
Output device comprises switching device, and this switching device is used for being outputted to less than supply voltage value but greater than at least one intermediate voltage value of earthed voltage value;
First magnitude of voltage and second magnitude of voltage are respectively first intermediate voltage value and second intermediate voltage value; And
Output device output equal or near a magnitude of voltage of supply voltage value or equal or near a magnitude of voltage of earthed voltage value with as the 3rd output voltage values.
5. according to any one described electronic switch in the claim 1 to 4, wherein:
Output device comprises element or the fixed voltage circuit or the fixed current circuit of the fixed voltage characteristic that presents diode, Zener diode or other diode; And
Come output voltage values is switched by making its element that presents diode, Zener diode or other fixed voltage characteristic or fixed voltage circuit or fixed current open circuit or closure.
6. a detected object ontological existence is judged system, and this system comprises that according to any one electronic switch of claim 1 to 5 and following interface circuit this interface circuit is used to produce and the corresponding signal of the output of electronic switch, wherein
First to the 3rd output voltage values is different with supply voltage value and earthed voltage value.
7, a kind of detected object ontological existence is judged system, and this system comprises that according to any one electronic switch of claim 1 to 5 and following interface circuit this interface circuit is used to produce and the corresponding signal of the output of electronic switch, wherein
Interface circuit comprises:
Element or the fixed voltage circuit or present that presents the fixed voltage feature of diode, Zener diode or other electronic switch has and the element of diode, Zener diode or other the fixed voltage feature of the basic identical feature of fixed voltage circuit or fixed voltage circuit or fixing power circuit.
8, a kind of pachinko game machine, this game machine comprise according to any one electronic switch of claim 1 to 5 or according to the detected object ontological existence of claim 6 or 7 judges system.
9, a kind of method of operation that is used for following electronic switch, described electronic switch by means of the existence of the change-detection one detected object body of signal of telecommunication state or do not exist and export described detected object body detection existence or do not exist, the method comprising the steps of:
Detect the existence of this detected object body or do not exist;
Detect radio wave; And
When detecting described detected object body, export first output voltage values, when not detecting described detected object body,, then export the 3rd output voltage values if export second output voltage values and detect radio wave.
CNA2006100746474A 2005-04-21 2006-04-21 Electronic switch and operation method for same Pending CN1855722A (en)

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JP5446605B2 (en) * 2009-08-27 2014-03-19 オムロン株式会社 Proximity switch
JP5286245B2 (en) * 2009-12-22 2013-09-11 京楽産業．株式会社 Game machine
JP2013128571A (en) * 2011-12-20 2013-07-04 Nippon Aleph Corp Composite sensor for game machine
JP5779159B2 (en) * 2012-09-25 2015-09-16 株式会社三共 Game machine
JP5779160B2 (en) * 2012-09-25 2015-09-16 株式会社三共 Game machine
JP2015171647A (en) * 2015-07-09 2015-10-01 株式会社三共 Game machine
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JP2925120B2 (en) * 1989-06-21 1999-07-28 オムロン株式会社 Proximity switch
JP2001149532A (en) * 1999-11-25 2001-06-05 Omron Corp Sensor for detecting pachinko ball
JP3903696B2 (en) * 2000-08-02 2007-04-11 オムロン株式会社 Proximity switch
JP3903711B2 (en) * 2000-11-08 2007-04-11 オムロン株式会社 Proximity switch
JP2002239169A (en) * 2001-02-19 2002-08-27 Fuji Shoji:Kk Pinball game machine
JP2003325930A (en) * 2002-05-15 2003-11-18 Adachi Light Co Ltd Abnormality detecting method for switching device in game machine

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