JP3892435B2 - Cordless power supply method - Google Patents

Description

  The present invention relates to a cordless power supply method for supplying power in a cordless manner to an object on the floor, which is a self-propelled electric product located on the floor surface.

  Power supply to self-propelled mobile electrical appliances such as automatic vacuum cleaners and robots can be achieved by connecting the electrical outlet with a wall outlet using a cable. The range is limited by the length of this cable, and there is a complaint that it cannot be flexibly redesigned, and that the cable that always comes with mobile electrical products sometimes interferes with handling and appearance. there were.

  In addition, mobile electric products that use a battery as a power source without providing a cable have been unsatisfactory because the mounted battery is heavy and bulky, and there is an unsatisfactory limit in reducing the size and weight.

In order to eliminate this dissatisfaction, a large number of electrode plates are arranged at predetermined intervals on the floor, and each of these electrode plates is alternately changed in polarity and connected to a power source so that the electrical products on the floor can be used. A plurality of electrode elements insulated from each other are provided, and in this electrode element, some electrode elements are in contact with one polarity electrode plate, and at the same time, some other electrode elements are in contact with the other polarity electrode plate. Arranged so that the distance between the electrode plates is larger than the contact range of the electrodes so that one electrode does not contact two electrode plates of different polarities at the same time. A floor capable of wirelessly supplying power to electrical appliances is disclosed.
Japanese Patent Publication No.2-160990

  However, in the above-described prior art, a large number of electrode plates arranged on the floor surface remain connected to the power source, and therefore other than the target electrical product on the floor surface. In addition to the risk of electrical leakage and short circuit accidents, there is a risk that humans may get an electric shock as it is, and there is a problem that it cannot be used in ordinary homes or offices.

  In addition, since it is necessary to keep the positional relationship between the electrode plate disposed on the floor surface and the electrode provided on the object on the floor within a certain range regardless of the movement of the object on the floor, an extremely large number of electrode plates are provided. However, it has to be arranged on the floor surface at regular intervals and in a regular arrangement, which causes a problem that the production price of the power supply floor becomes extremely high.

  Therefore, the present invention was devised to solve the above-described problems in the prior art, and the connection to the power source of a large number of electrode plates (power transmission electrodes) arranged on the floor surface is required for power supply. Achieved according to the power supply request signal given by contact with or approaching the electrode element (receiving electrode) of the object on the floor, which is an electrical product on the surface, and making the object on the floor recognize the position of the power transmission electrode By supplying cordless power to objects on the floor with high safety and without fear of electric leakage, short circuit accidents, or electric shock, and by arranging the power transmission electrodes in the required fixed arrangement at the required locations, The object is to reduce the number and to make the power supply floor simple in structure and inexpensive to manufacture.

Among the present invention for solving the above technical problems, the configuration of the invention according to claim 1 is:
Arranged a number of transmission electrodes on the floor, provided with underfloor wiring having at least a power line, for each transmission electrodes, the transmission electrodes relative underfloor wiring, provided with a selector for individually connected switchably, each transmission With respect to a pair of power receiving electrodes provided on an object on the floor located on the floor, the distance between the electrodes is such that adjacent power transmitting electrodes are in contact with each other separately and simultaneously, and one power receiving electrode is simultaneously connected to two power transmitting electrodes. Set to a value that does not contact, and the selector switches the built-in switching contact according to the power supply request signal given from the object on the floor by the contact or approach between the power transmission electrode and the power reception electrode, and power transmission that is in contact with or close to the power reception electrode A cordless power supply method for supplying power to an object on the floor that is self-propelled on the floor surface from a power supply floor in which electrodes are connected to a power line;
A sensor is installed on the object on the floor that runs by operating the motor that is part of the load with the electric power stored in the installed storage circuit, and the object on the floor is detected while detecting the position of the target power transmission electrode from the detection signal of this sensor. Moving,
The power receiving electrode is brought into contact with or close to the pair of power transmitting electrodes selected for the combination , a power supply request signal is sent from the object on the floor to the selector, and the selector is turned on by receiving the power supply request signal, thereby connecting the power transmitting electrode and the power line. Connect and supply power from the power line to the load of the object on the floor and supply charging power to the storage circuit,
If the selector no longer receives the power supply request signal, turn off the selector and disconnect the connection between the power transmission electrode and the power line.
It is in.

In the invention as claimed in claim 1, wherein each power transmission electrodes floor object on the floor surface is located, the power receiving electrode contact or to close, and unless sends a power supply request signal, since it is not connected to the power line Even if an object other than an object on the floor is in contact with the floor surface, it will not cause an electric leakage or short circuit, and even if a person touches it, there will be no electric shock at all. .

  Each power transmission electrode has a distance between a pair of power receiving electrodes of the object on the floor, such that adjacent power transmitting electrodes are in contact with each other separately and simultaneously, and one power receiving electrode is not in contact with two power transmitting electrodes at the same time. Because it is set, a plurality of power transmitting electrodes are not short-circuited by a single power receiving electrode, but a pair of power transmitting electrodes and power receiving electrodes are always in one-to-one contact at the same time. To achieve a stable power supply.

  Since the object on the floor travels while selecting the necessary power transmission electrode, it is not necessary to arrange the power transmission electrode in an unnecessary place and region, and the structure of the power supply floor is simplified accordingly.

  Since the object on the floor has a power storage circuit and is capable of self-propelled movement by the power of this power storage circuit, it is allowed to intermittently connect the power reception electrode to the power transmission electrode. As a result, the number of power transmission electrodes that must be installed can be reduced, and the structure of the power supply floor can be simplified accordingly.

  According to the second aspect of the present invention, the power supply request signal in the first aspect of the invention is specified as a code signal.

  In the invention according to claim 2, since the power supply request signal is a code signal, the selector compares the code of the input power supply request signal with a pre-recorded code, and only when it is compatible. Since the power transmission electrode is connected to the power line, the power transmission electrode is not unreasonably connected to the power line, thereby dramatically improving the safety of the power supply floor.

  According to a third aspect of the invention, the power supply request signal in the first aspect of the invention is specified as a direct current signal.

  In the third aspect of the present invention, since the power supply request signal is a simple DC current signal, the selector only needs to have a configuration capable of simply detecting a DC current. Therefore, the selector is simple and inexpensive. can do.

  According to a fourth aspect of the present invention, in the configuration of the first, second, or third aspect, the means for detecting the position of the target power transmission electrode from the detection signal of the sensor, It is added that the direction and distance to the electrode are calculated and detected.

  In the invention according to claim 4, since the position detection of the target power transmission electrode by the object on the floor processes the detection signal of the sensor as a direct position signal, the signal processing for position detection is simple, thereby The configuration of the calculation part for detecting the position of the power transmission electrode in the object can be simplified.

  According to a fifth aspect of the invention, in the configuration of the first, second or third aspect of the invention, means for detecting the position of the target power transmission electrode from the detection signal of the sensor is provided. Is added, and the created array pattern is compared with the previously recorded array pattern of power transmission electrodes, and the position of the target power transmission electrode is calculated and detected.

  In this invention, the position detection of the target power transmission electrode by the object on the floor is calculated from a comparison between the power transmission electrode array pattern created according to the sensor detection signal and the power transmission electrode array pattern recorded in advance. As a result, the entity becomes predictive detection.For this reason, the power transmission electrode that is advantageous for the traveling movement of the object on the floor is selected as the target power transmission electrode within the range in which the traveling movement can be performed by the power of the power storage circuit. Can be determined.

  According to a sixth aspect of the present invention, in the configuration of the first, second, third, fourth, or fifth aspect, an object on the floor is caused to self-run while emitting a notification signal forward from the mounted energy radiator, and energy reception is performed. The selector that receives the notification signal by the body supplies power from the power line to the active circuit, operates the active element installed at the same position as the power transmission electrode and emits an approach signal, and the sensor of the object on the floor outputs the approach signal. Receiving and outputting a detection signal.

  In the invention according to claim 6, by receiving a notification signal from a floor object that is moving self-propelled, the power transmission electrode located in front of the floor object, that is, on the moving direction side, reveals the existence of self. Therefore, the power transmission electrode side consumes power only when an object on the floor approaches, so that the power consumption of the power supply floor becomes extremely small.

  In addition, the approach signal from the power transmission electrode side is radiated in response to the reception of the notification signal from the object on the floor, that is, the signal radiated when the object on the floor is close to the power transmission electrode. The object on the floor is stably and reliably received in a state where there is no possibility of adverse effects such as obstacles.

  According to a seventh aspect of the invention, in the configuration of the first, second, third, fourth, or fifth aspect of the invention, the selector is provided with a permanent magnet attached at the same position as the power transmission electrode, and the active element transmits power. A sensor composed of a plurality of pickup coils of an object on the floor uses a direct-current magnetic field formed around the electrodes as an approach signal, and adds a sensor signal and outputs a detection signal.

  In the seventh aspect of the present invention, since the approach signal is a DC magnetic field formed by the permanent magnet attached to the power transmission electrode, no power is required to radiate the approach signal, thereby waiting the power supply floor. Does not consume power at all.

  In addition, the power supply floor does not require an energy receiver that receives a notification signal or an active circuit that controls the operation of the permanent magnet that is an active element, by simply assembling a permanent magnet to each power transmission electrode. Since the object on the floor does not need to emit a notification signal, an energy radiator is not required, and the overall configuration is simplified correspondingly.

  The invention according to claim 8 is obtained by adding, to the configuration of the invention according to claim 1, 2, 3, 4 or 5, that the sensor of the object on the floor directly senses the power transmission electrode and outputs a detection signal. It is.

  In the invention according to claim 8, since the object on the floor directly senses the power transmission electrode with the sensor, the power supply floor has a component for emitting an approach signal composed of an energy receiver, an active circuit and an active element. It becomes unnecessary, and the configuration is simplified accordingly, and no power is consumed except when power is supplied to the object on the floor.

  A ninth aspect of the invention is the same as that of the eighth aspect of the invention, in which the power transmission electrode is sensed by the sensor, the image by the image element, the rake probe for measuring the conductivity pattern distribution on the floor, and the metal by eddy current. This is in addition to the fact that one of the conductivity image by the detection coil array and the acoustic reflectance image by the array of ultrasonic elements is used.

  In the invention described in claim 9, in the case of an image, the image analysis is performed. In the case of a conductivity image, the conductivity distribution is analyzed. In the case of an acoustic reflectance image, the acoustic reflectance is analyzed. By doing so, the position of the power transmission electrode is detected.

Since the present invention has the above-described configuration, the following effects can be obtained.
In the invention according to claim 1, each power transmission electrode is equally ground potential except when power is supplied to the object on the floor. In addition, no short circuit is caused, and the two power transmission electrodes are not short-circuited by the power receiving electrode. Furthermore, no electric shock is caused even if a person touches, and extremely high safety is stably exhibited.

  The object on the floor achieves contact with the power transmission electrode reliably and accurately by self-running with the power stored in the power storage circuit and detection of the position of the power transmission electrode by the sensor, ensuring the necessary power supply Therefore, safe and stable operation of objects on the floor can be obtained.

  Since the object on the floor travels while selecting the required power transmission electrode, it is only necessary to arrange the power transmission electrode only in the required place and area, and the connection of the power reception electrode with the power transmission electrode is intermittent. Therefore, it is possible to reduce the number of transmission electrodes that must be installed, thereby simplifying the structure of the power supply floor and greatly reducing the manufacturing cost of the power supply floor. Can be obtained.

  Since the detection of the target power transmission electrode by the object on the floor is predictive detection, the power transmission electrode that is advantageous for the traveling movement of the object on the floor is selected as the target power transmission electrode within the range that can be traveled by the power of the power storage circuit. Can be determined, which allows the object on the floor to travel safely and smoothly.

  In the invention according to claim 2, since the safety of the power supply floor is dramatically improved, it is possible to use the power supply floor in a daily human action area.

  In the invention described in claim 3, since the selector can be made simple and inexpensive, the power supply floor itself can be provided easily and inexpensively.

  In the invention of claim 4, the signal processing for detecting the position of the power transmission electrode is simple, and accordingly, the calculation part for detecting the position of the power transmission electrode in the object on the floor is configured easily and inexpensively. It becomes possible to do.

  In the invention according to claim 5, since the object on the floor detects the necessary power transmission electrode in accordance with the stored arrangement pattern of the power transmission electrode, the optimal power transmission electrode can be predicted and selected. It becomes possible to move the object more efficiently.

  According to the sixth aspect of the present invention, each power transmission electrode needs to output an approach signal only when an object on the floor approaches, so that the power consumption of the power supply floor can be sufficiently reduced.

  Also, since the approach signal from the power transmission electrode side is radiated in response to the reception of the notification signal from the object on the floor, it is stable and reliable in a state where there is no possibility of adverse effects such as radio interference and electromagnetic interference around the surroundings. To ensure sufficient safety.

  In the seventh aspect of the invention, since the approach signal is a DC magnetic field formed by a permanent magnet, power consumption in the power supply floor can be greatly reduced and the structure of the power supply floor itself is simplified. Similarly, the structure of the object on the floor can be simplified.

  In the invention described in claim 8, it is not necessary to provide a functional part that reveals the presence of the power transmission electrode on the power supply floor side, and a functional part that receives a signal from the power supply floor is also provided on the object side on the floor. If it is not necessary to provide it, the configuration of the entire facility can be greatly simplified, and the cost required for implementation can be sufficiently reduced.

  In the invention of claim 9, when sensing the power transmission electrode by a sensor using an image, the sensor can be configured with a simple and inexpensive structure. , The presence or absence of connection with the power line of the power transmission electrode can be detected in advance, high safety can be obtained, and when performing with an acoustic reflectance image, the power transmission electrode should be detected from the difference in hardness Therefore, it functions effectively when the floor surface is made of a soft floor material such as carpet.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows an example of the overall configuration of a basic embodiment of the present invention. A large number of power transmission electrodes 3 are arranged on a floor 2 in a fixed arrangement pattern, and each power transmission electrode 3 is provided by a selector 4. A power supply floor 1 connected to an underfloor wiring 15 having a power line 16 connected to a power supply 18 in an intermittent manner, and a power supply floor 1 mounted on the floor surface 2 of the power supply floor 1 so as to be capable of self-propelled movement. 3 is configured in combination with the object 19 on the floor that is fed with the power receiving electrode 24 in contact therewith.

  The power supply floor 1 has, on the floor surface 2, for example, as shown in FIG. 2, a large number of conductive material flat disk-shaped power transmission electrodes 3 provided in a fixed arrangement pattern in a matrix arrangement at fixed intervals, An underfloor wiring 15 composed of a power line 16 and a ground line 17 and a large number of selectors 4 that connect each power transmission electrode 3 to the underfloor wiring 15 in an intermittent manner.

  Each selector 4 includes a switching contact 5 that intermittently connects the power transmission electrode 3 and the underfloor wiring 15, and a signal detection unit 7 that detects the power supply request signal H <b> 3 transmitted from the floor object 19 to the power transmission electrode 3 with the detector 11. And a control circuit 8 that controls the operation of the relay drive 6 that switches and sets the switching state of the switching contact 5 in accordance with a signal from the signal detection unit 7.

  In addition, the selector 4 is provided with an energy receiver 12 for receiving the notification signal H1 from the object 19 on the floor, and operates the active element 13 that emits the approach signal H2 attached to the power transmission electrode 3. An active circuit 14 is provided, the energy receiver 12 inputs the received signal to the control circuit 8, and the active circuit 14 is set so that its operation is controlled by the control circuit 8.

  That is, the selector 4 performs a basic operation of switching and controlling the intermittent connection of the power transmission electrode 3 to the underfloor wiring 15 according to the power supply request signal H3 from the object 19 on the floor, and in addition to this, the active element 13 is operated, The operation of radiating the approach signal H2 to the object 19 on the floor and the operation of receiving the notification signal H1 by the energy receiver 12 are performed.

  An object 19 on the floor is supplied with power from a main body 20 that travels on a floor surface 2 by wheels 35, a load 21 including a motor, a storage circuit 22 including an electric double layer capacitor and a small battery, and a power supply floor 1. In order to receive, the power receiving electrode 24 provided so as to be in contact with the power transmitting electrode 3, the power supply request signal generating circuit 26, the sensor 33 for detecting the power transmitting electrode 3 by sensing the approach signal H2 and the like, and the notification signal H1 are emitted. Energy radiator 34, and a control device 25 for controlling the movement of each component.

  Two power receiving electrodes 24 are provided on the lower surface of the main body 20 in contact with two adjacent power transmitting electrodes 3 separately and simultaneously. The size of the power receiving electrode 24 is two. The two power transmission electrodes 3 are not short-circuited.

  The load 21 and the power storage circuit 22 are connected in parallel between the two power receiving electrodes 24. A rectifier circuit 23 is provided between the power receiving electrode 24 and the parallel circuit of the load 21 and the power storage circuit 22. However, it is convenient for implementation.

  A power supply request signal generation circuit 26 is provided between the power receiving electrodes 24, and transmits a power supply request signal H <b> 3 to the selector 4 through the power receiving electrode 24.

  An energy radiator 34 that emits a notification signal H1 that informs each selector 4 of the power supply floor 1 that the object 19 on the floor is approaching, and an approach signal H2 from the active element 13 are detected on the front surface of the main body 20. A sensor 33 for detecting the power transmission electrode 3 is attached.

  Operation operation of the load 21 including the motor, power supply operation to the load 21 of the storage circuit 22, signal generation operation of the power supply request signal generation circuit 26, signal emission operation of the energy radiator 34, signal reception operation of the sensor 33, etc. All of the detection operations are controlled by the control device 25.

  The detection signal of the sensor 33 is arithmetically processed as a position signal by the arithmetic unit 32, and the direction and distance to the direct power transmission electrode 3 are calculated to determine the position of the target power transmission electrode 3, or the power transmission electrode 3 The control device 25 compares the array pattern created by the power transmission electrode 3 with the previously recorded array pattern and makes the power receiving electrode 24 contact with the target power transmission electrode 3. Predict the position.

  FIG. 3 is a flowchart for explaining the basic operation mode of the present invention. In step s1, which is the start, power is stored in the power storage circuit 22 of the object 19 on the floor.

  From this state, in step s2, the on-floor object 19 drives the motor of the load 21 by the electric power of the power storage circuit 22 and moves on the floor 2 in a free-running manner.

  The object on the floor 19 detects the position of the target power transmission electrode 3 in step s3. As a method for detecting the position of the power transmission electrode 3 in step s3, the detection method in step s3a, steps s3b1, and steps s3b2 are performed. And a detection method using a combination.

  In step s3a, the direction and distance with respect to the target power transmission electrode 3 are calculated from the detection signal of the sensor 33, and thereby the position of the target power transmission electrode 3 is detected.

  In the combination of step s3b1 and step s3b2, in step s3b1, an array pattern of the power transmission electrode 3 is created from the detection signal of the sensor 33, and then in step s3b2, the created array pattern of the power transmission electrode 3 is recorded in advance. The position of the target power transmission electrode 3 is detected by comparison with the arranged pattern.

  When the object 19 on the floor makes the power receiving electrode 24 contact or approach the target power transmission electrode 3 in step s4, a power supply request signal is sent to the selector 4 connected to the target power transmission electrode 3 in step s5. H3 is transmitted.

  In step s 6, the selector 4 decodes the power supply request signal H 3 and determines that the power supply request signal H 3 is suitable. The selector 4 combines the power transmission electrode 3 and the power line 16 to supply power to the object 19 on the floor.

  In step s7, the on-floor object 19 supplies power from the power supply floor 1 to the load 21 and charges the storage circuit 22 with this power.

  In step s8, the selector 4 checks whether or not the power supply request signal H3 is input from the object 19 on the floor. If there is an input of the power supply request signal H3, the selector 4 returns to step s6 and continues to supply power. If the request signal H3 is not input, the process proceeds to step s9.

  In step s9, the selector 4 stops supplying power according to the absence of the power supply request signal H3, and returns to step s2.

  That is, the absence of the input of the power supply request signal H3 means that the power transmitting electrode 3 and the power receiving electrode 24 are separated from each other due to the self-propelled movement of the object 19 on the floor. The action to receive is started.

  Hereinafter, exemplary embodiments of the present invention will be described, but the flowchart in each embodiment shows an example in which step s3 is configured by a combination of step s3b1 and step s3b2.

  FIG. 4 is a simplified configuration diagram showing the first embodiment of the present invention. The power supply floor 1 uses a coil as the energy receiver 12 and a light emitting diode as the active element 13. The sensor 33 is a camera, and the energy radiator 34 is an electromagnetic coil.

  FIG. 5 is a flowchart for explaining the operation of the first embodiment of the present invention. Steps s10 to s12 are inserted between steps s2 and s3 of the basic flowchart shown in FIG. Is followed by step s13.

  In step s10, the object 19 on the floor moves by itself while emitting the notification signal H1 from the energy radiator 34.

  In step s11, the selector 4 receives the notification signal H1 from the energy receiver 12, operates the active circuit 14, and emits an approach signal H2 that is an optical signal from the active element 13.

  The object 19 on the floor detects the approach signal H2 by the sensor 33 in step s12, and then proceeds to step s3b1 to create an array pattern of the power transmission electrodes 3.

  In addition, the selector 4 that stopped supplying power to the object 19 on the floor in step s9 proceeds to step s13, sets the potential of the power transmission electrode 3 to the ground level, and ensures safety.

Figure 6 is a simplified schematic diagram showing a second embodiment of the present invention, the power supply floor 1, by arranging the active element 13 using a permanent magnet directly below the feed Denden electrode 3, close signal DC magnetic field The energy receptor 12 and the active circuit 14 are not provided, and the object on the floor 19 is a magnetic sensor as the sensor 33 (because the approach signal H2 is a DC magnetic field, a fluxgate magnetic sensor, amorphous A magnetic sensor, a rotating coil, etc. are used, and the energy radiator 34 is not provided.

  FIG. 7 is a flowchart for explaining the operation of the second embodiment of the present invention. Steps s14 and s15 are substituted for steps s10 to s12 in the flowchart for explaining the operation of the first embodiment shown in FIG. Inserting.

  In step s14, the power supply floor 1 provides a permanent magnet as an active element 13 at the position of the power transmission electrode 3, and constantly radiates a DC magnetic field as an approach signal H2 from the active element 13 which is a permanent magnet.

  In step s15, the on-floor object 19 detects the approach signal H2 that is a DC magnetic field by the sensor 33 using a magnetic sensor, and then proceeds to step s3b1 to create an array pattern of the power transmission electrodes 3.

  FIG. 8 is a simplified configuration diagram showing a third embodiment of the present invention, and the power supply floor 1 is not provided with the energy receiver 12, the active element 13, and the active circuit 14, but on the other hand, the object 19 on the floor. The sensor 33 is provided with a camera that directly senses the power transmission electrode 3 and is not provided with the energy radiator 34.

  FIG. 9 is a flowchart for explaining the operation of the third embodiment of the present invention. In the flowchart for explaining the operation of the first embodiment shown in FIG. 5, step s16 is inserted instead of steps s10 to s12. ing.

  In step s16, the on-floor object 19 is detected by directly sensing the power transmission electrode 3 with the camera as the sensor 33, and then the process proceeds to step s3b1 to create an array pattern of the power transmission electrode 3.

  FIG. 10 shows a first example of a transmission / reception configuration of the power supply request signal H3. The selector 4 includes a signal detection unit 7 in which a coil is attached as a detector 11 to the power transmission electrode 3, and a control circuit. 8, a signal demodulator 9 that demodulates the signal detected by the signal detector 7, and determines whether or not the code of the signal demodulated by the signal demodulator 9 matches a prerecorded code. A signal verification unit 10 is provided.

  On the other hand, on the object 19 on the floor, a signal generating unit 29 and a signal modulating unit 30 that modulates a signal from the signal generating unit 29 and transmits the signal from a signal transmitting unit 31 that is a transmitting coil provided on the power receiving electrode 24. Is provided.

  The power supply request signal generation circuit 26 transmits a power supply request signal H3 from the signal transmission unit 31 at regular time intervals in accordance with a command from the control device 25.

  When the power receiving electrode 24 approaches the power transmission electrode 3 due to the self-propelled movement of the object 19 on the floor, the signal detection unit 7 detects the power supply request signal H3 from the signal transmission unit 31 with the detector 11, and this signal Is demodulated by the signal demodulator 9 and then verified by the signal verification unit 10.

  If it is determined that the verification in the signal verification unit 10 matches and the input signal is the power supply request signal H3, the relay drive 6 is operated to switch the switching contact 5 to the “continuous” state, The power transmission electrode 3 is connected to the power line 16 to supply power to the object 19 on the floor.

  The electric power supplied to the object 19 on the floor is full-wave rectified by the rectifier circuit 23 to be supplied to the load 21 and the storage circuit 22 as DC power.

  In the first example of the transmission / reception configuration of the power supply request signal H3 shown in FIG. 10, the power supply request signal H3 is modulated and transmitted and received by the selector 4 side. Prior to the contact with the electrode 24, the selector 4 can be put on standby in a power supply enabled state, whereby the power supply to the on-floor object 19 that is traveling can be efficiently performed.

  Further, since the connection between the power transmission electrode 3 and the power line 16 in the selector 4 is achieved only when the code of the received detection signal is compatible, the power transmission electrode 3 and the power line 16 are connected by a signal other than the power supply request signal H3. Are not connected at all, and therefore, extremely high safety is exhibited.

  FIG. 11 shows a second example of the transmission / reception configuration of the power supply request signal H3. The selector 4 detects the power supply request signal H3 that is a current signal flowing into the power transmission electrode 3, and this signal. A relay drive 6 is provided for switching the switching contact 5 to the “continuous” state by the input of a detection signal from the detection unit 7.

  On the other hand, the power supply request signal generation circuit 26 provided on the floor object 19 is configured with a series circuit of a signal capacitor 27 and a signal rectifier 28 as a main component.

  The power supply request signal generation circuit 26 charges a part of the electric power from the power source 18, which is an AC power source, to the signal capacitor 27 with a certain polarity by the signal rectifier 28, and moves the power receiving electrode 24 by moving the object 19 on the floor. At the beginning of contact with the power transmission electrode 3, the charging power of the signal capacitor 27 is sent to the selector 4 as a power supply request signal H3.

  FIG. 12 shows a specific example of the power supply request signal generating circuit 26. A current limiting current resistor R is connected in series with a series circuit of a signal capacitor 27 and a signal rectifier 28, and a signal rectifier is shown. The switch S is connected in parallel with the switch 28, and the exciting coil L for exciting the switch S is connected in parallel with the series circuit of the signal capacitor 27 and the signal rectifier 28.

  The switch S is a normally closed contact type, and is turned off by excitation of the exciting coil L. Therefore, the switch S is turned off when power is supplied from the power source 18 to the object 19 on the floor. 28 is activated, and the signal capacitor 27 is charged with electric power having the polarity shown in the figure.

  When the power receiving electrode 24 moves away from the power transmitting electrode 3 and the supply of power from the power source 18 to the object on the floor 19 is stopped, the exciting power of the exciting coil L is lost, so that the switch S is turned on and the signal capacitor 27 is charged at any time. The power can be discharged as the power supply request signal H3.

  The exciting coil L can be connected in parallel with the series circuit of the signal capacitor 27, the signal rectifier 28, and the limiting resistor R, but the combination of the switch S and the exciting coil L is constituted by a reed switch. In view of the safety of the reed switch, the illustrated connection structure is preferable.

  Further, the limiting resistor R is not only for limiting the current but also for setting and controlling the discharge time constant of the signal capacitor 27, and prevents the charged charge of the signal capacitor 27 from being discharged instantly.

  When the power receiving electrode 24 comes into contact with the power transmission electrode 3 due to the self-propelled movement of the object 19 on the floor, a power supply request signal H3 that is a current signal flows into the power transmission electrode 3 from the signal capacitor 27 of the power supply request signal generation circuit 26. The selector 4 detects the power supply to the on-floor object 19, that is, to the load 21, the power storage circuit 22, and the signal capacitor 27, with the switching contact 5 in the “continuous” state.

  When the power receiving electrode 24 moves away from the power transmission electrode 3 due to the self-propelled movement of the object 19 on the floor, the power supply request signal H3 does not flow into the selector 4, so the selector 4 switches the switching contact 5 to the “OFF” state to transmit power. The electrode 3 is connected to the ground line 17.

  FIG. 13 shows a third example of the transmission / reception configuration of the power supply request signal H3. The power supply 18 is a DC power supply, and the signal detector 7 of the selector 4 determines the direction of the power supply request signal H3 that is a DC current signal. The connection position of the switching contact 5 is switched and set by the relay drive 6 according to the determination result.

  The selector 4 switches the connection position of the switching contact 5 in accordance with the direction of the power supply request signal H3 from the object 19 on the floor, so that the power receiving electrode 24 is not in contact with the power transmitting electrode 3, that is, from the object 19 on the floor. In a state where there is no power supply request signal H3, the switching contact 5 is positioned at a contact point connected to the ground line 17 which is a neutral position, thereby securing a state where the power transmission electrode 3 is connected to the ground line 17.

  The floor object 19 is not provided with the power supply request signal generation circuit 26 because the power storage circuit 22 also serves as a power supply request signal generation function part, and the DC power supplied from the power supply floor 1 is supplied by the selector 4. Since the directionality is constant by the switching setting of the switching contact 5, the rectifier circuit 23 is not necessary.

It is a whole block diagram of a basic embodiment of the present invention. It is a figure which shows an example of the arrangement pattern of a power transmission electrode. It is a flowchart figure of operation | movement of a basic embodiment. It is a simplified block diagram which shows the 1st embodiment of this invention. It is a flowchart figure of operation | movement of a 1st embodiment. It is a simplified block diagram which shows the 2nd embodiment of this invention. It is a flowchart figure of operation | movement of a 2nd embodiment. It is a simplified block diagram which shows the 3rd embodiment of this invention. It is a flowchart figure of operation | movement of a 3rd embodiment. It is a structural example figure which shows the 1st example of the transmission / reception structure of an electric power feeding request signal. It is a structural example figure which shows the 2nd example of the transmission / reception structure of an electric power feeding request signal. It is a circuit diagram which shows one of the specific examples of a power supply request signal generation circuit. It is a structural example figure which shows the 3rd example of the transmission / reception structure of an electric power feeding request signal.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1; Power supply floor 2; Floor surface 3; Power transmission electrode 4; Selector 5; Switching contact 6; Relay drive 7; Signal detection part 8; Control circuit 9: Signal demodulation part 10; Receptor 13; Active element 14; Active circuit 15; Underfloor wiring 16; Power line 17; Ground line 18; Power source 19; Floor object 20; Main body 21; Load 22; Power storage circuit 23; Rectifier circuit 24; 26; Power supply request signal generation circuit 27; Signal capacitor 28; Signal rectifier S; Switch L; Excitation coil R; Limiting resistor 29; Signal generator 30; Signal modulator 31; Signal transmitter 32; Arithmetic unit 33; 34; Energy radiator 35; Wheel H1; Notification signal H2; Approach signal H ; Feed request signal

Claims (9)

A large number of power transmission electrodes (3) are arranged on the floor (2), and an underfloor wiring (15) having at least a power line (16) is provided.For each power transmission electrode (3 ), the power transmission electrode (3 ) is provided. respect underfloor wiring (15), provided the selector (4) for switchably individually, the interval between the transmission electrode (3), the floor object (19) located on the floor (2) The adjacent power transmitting electrodes (3) are in contact with the pair of power receiving electrodes (24) provided separately and simultaneously, and one power receiving electrode (24) is connected to two power transmitting electrodes (3) at the same time. Set to a value that does not contact, the selector (4), according to the power supply request signal (H3) given from the object on the floor (19) by the contact or approach of the power transmission electrode (3) and the power reception electrode (24), By switching the built-in switching contact (5) to connect the power transmission electrode (3) in contact with or close to the power receiving electrode (24) to the power line (16) from the power supply floor (1), the floor surface( 2) A cordless power supply method for supplying power to a floor object (19) that is self-propelled, which operates a motor that is part of the load (21) by the power stored in the installed storage circuit (22). A sensor (33) is provided on the floor object (19) that is self-propelled, and the floor object (19) is moved while detecting the position of the target power transmission electrode (3) from the detection signal of the sensor (33). A power receiving request signal (H3) is sent from the object on the floor (19) to the selector (4) by bringing the power receiving electrode (24) into contact with or approaching the pair of power transmitting electrodes (3) of which the combination is selected, and the selector (4) is turned on by receiving the power supply request signal (H3), thereby connecting the power transmission electrode (3) and the power line (16), from the power line (16) to the object on the floor (19). When power is supplied to the load (21) and charging power is supplied to the storage circuit (22), and the power supply request signal (H3) is no longer received, the A cordless power supply method for cutting off the connection between the power transmission electrode (3) and the power line (16) by turning the rectifier (4) off.   The cordless power supply method according to claim 1, wherein the power supply request signal (H3) is a code signal.   The cordless power supply method according to claim 1, wherein the power supply request signal (H3) is a direct current signal.   The means for detecting the position of the target power transmission electrode (3) from the detection signal of the sensor (33) is calculated from the detection signal of the sensor (33) by calculating the direction and distance to the target power transmission electrode (3). The cordless power supply method according to claim 1, 2, or 3, which is detected.   The means for detecting the position of the target power transmission electrode (3) from the detection signal of the sensor (33), the array pattern of the power transmission electrode (3) is created from the detection signal of the sensor (33), and the created array pattern The cordless power according to claim 1, 2 or 3, wherein the position of the target power transmission electrode (3) is calculated and detected by comparing the pre-recorded arrangement pattern of the power transmission electrode (3) Supply method.   A selector (4) that has self-propelled the object (19) on the floor while emitting the notification signal (H1) forward from the mounted energy radiator (34) and received the notification signal (H1) by the energy receiver (12). ) Supplies power from the power line (16) to the active circuit (14), operates the active element (13) mounted at the same position as the power transmission electrode (3), and emits an approach signal (H2), The cordless power supply method according to claim 1, 2, 3, 4, or 5, wherein the sensor (33) of the object on the floor (19) receives the approach signal (H2) and outputs a detection signal.   The selector (4) is provided with a permanent magnet attached at the same position as the power transmission electrode (3) as an active element (13), and a DC magnetic field formed by the active element (13) around the power transmission electrode (3) is an approach signal. The sensor (33) configured by (H2) and a plurality of pickup coils of the object on the floor (19) receives the approach signal (H2) and outputs a detection signal. 5. The cordless power supply method according to 5.   The cordless power supply method according to claim 1, 2, 3, 4, or 5, wherein the sensor (33) of the object on the floor (19) directly senses the power transmission electrode (3) and outputs a detection signal.   Sensing of the power transmission electrode (3) by the sensor (33), image image by the image element, conductivity image by the metal detector coil array by rake probe and eddy current measuring the conductivity pattern distribution on the floor (2), super 9. The cordless power supply method according to claim 8, wherein the cordless power supply method is performed using any one of acoustic reflectance images obtained by an array of acoustic wave elements.

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