JPH07143043A - Magnetic induction switching power supply device and data carrier system using the same - Google Patents

Abstract

(57) [Abstract] [Purpose] A magnetic induction switchgear type power supply device that enables power saving of a data carrier slave unit and a data carrier system that uses the power supply device. Data that has been saved without sacrificing user convenience. It is intended to provide a data carrier system including a carrier slave unit. [Structure] A data carrier master unit is provided with a magnetic field generator in a fixed direction, communication means, and control means. The data carrier slave unit has a built-in induction coil, a current comparator connected to the induction coil, a switch means connected to the current comparator, and a magnetic induction switching power supply device including a power supply and a disconnection means connected to the switch means. The magnetic induction switchgear type power supply device is connected to communication means, storage means and control means in the slave unit. When the data carrier slave unit crosses the magnetic field of the master unit by the user, a current exceeding a threshold value flows in the induction coil, and the power source of the slave unit is connected to each electric circuit. During this period, communication between the master unit and the slave unit is performed wirelessly to exchange data. After starting for a certain time, the electric circuit is cut off by the breaking means.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic induction switchgear type power supply device capable of reducing the power consumption of a data carrier slave unit and a data carrier system using the same.

[0002]

2. Description of the Related Art In recent years, various morphological electronic devices have been developed with the miniaturization and high performance of electronic circuits. Some of these electronic devices have a function of wirelessly exchanging information with other devices. For example, pagers are one of them. This can be regarded as communication between a fixed station and a mobile station, but there is a data carrier system as a more localized system that does not require a wireless license. One of the commercialized data carrier systems is a postpaid lift fee payment system at ski resorts. This is because each user carries a so-called data carrier slave unit in order to count the number of times the lift is used at the ski resort, and the data is stored on the slave unit by exchanging data with the data carrier master unit installed at the lift landing. It is a system that charges when exiting the ski resort by counting the number of times the lifts are held.

The ski lift utilization system will be described with reference to FIG. The data carrier slave unit 9 is carried by each user of the lift. The cordless handset 9 is a communication unit 10 for communicating with a management device installed outside.
Storage means 12 for storing and holding the number of times the lift has been used,
A control unit 11 for controlling the communication unit 10 and the storage unit 12 to write and read the stored contents of the storage unit 12 based on the information obtained from the communication unit 10, and a power supply for supplying electric power to each of these units. 2 and.

The data carrier master unit 8 is installed at the entrance of a lift, for example, and the data carrier slave unit 9
An external power supply for supplying electric power to the communication means 14 for communicating with the communication means 14 and the control means 13 for controlling the communication means 14 is omitted. When the carrier of the data carrier slave unit 9 passes near the data carrier master unit 8, the communication means 14 in the data carrier master unit 8 and the data carrier slave unit 9
Data carrier slave unit 9 is used to communicate with the communication means 10 in the data carrier by, for example, low-power electromagnetic waves or infrared light.
The contents of the storage means 12 therein are updated.

[0005]

The purpose of such a system is to make it convenient for a person carrying a data carrier child device. For example, in the case of a system that uses low power electromagnetic waves, it is sufficient to put the data carrier handset in your pocket in the case of a system that uses electromagnetic waves of low power. By doing so, when the user passes the vicinity of the data carrier base unit 8, the contents of the storage means 12 in the handset unit 9 are updated without manipulating the data carrier handset 9. That is significant. Therefore, of course, a complicated system in which a switch for opening and closing the connection of the power source 2 to each means for power saving is provided and the user always operates the switch is not preferable.

In such a system, it is uncertain when the carrier of the data carrier slave unit 9 passes near the data carrier master unit 8, that is, when the counting operation of using the lift is performed. It is necessary to constantly supply power from the power source 2 to the communication means 10, the control means 11, and the storage means 12 in 9 to keep these means in an operating state.

On the other hand, the data carrier slave unit 9 needs to be small and portable, and the capacity of the built-in power supply 2 is limited. Therefore, how to suppress the power consumption of the power supply 2 and operate for a long time. The challenge was the contradictory proposition of whether to make it possible.

An object of the present invention is to provide a magnetic induction switchgear type power supply device which has both convenience for the user and reduced power consumption of a battery power supply, and a data carrier system using the same.

[0009]

DISCLOSURE OF THE INVENTION The present invention relates to an induction coil and a current comparison for emitting a connection signal when the current value induced when the induction coil crosses a magnetic field when the induction coil crosses a threshold value. And a power supply circuit, and switch means for connecting to the current comparator and receiving the connection signal to close a switch for applying power from the power supply circuit to an external electric circuit,
A disconnection for disconnecting the switch by connecting to the switch means, measuring an elapsed time from a time when the switch is closed, and sending a disconnection signal for opening the switch of the power supply circuit to the switch means at a predetermined time. And a magnetic induction switchgear type power supply device.

The present invention further relates to an induction coil, a current comparator which is connected to the induction coil and which outputs a connection signal when the current value induced when the induction coil crosses a magnetic field is equal to or more than a threshold value, and an electric circuit. And switch means for connecting to the current comparator and receiving the connection signal to close a switch for applying power from the power supply circuit to an external electric circuit, and a time when the switch is connected to the external electric circuit and the switch is closed. A magnetic induction switchgear type power supply device comprising: a cutoff unit that cuts off the switch by sending a cutoff signal for opening the switch of the power supply circuit to the switch unit at a predetermined time by measuring elapsed time as a starting point. Disclose.

Further, according to the present invention, communication means for wirelessly transmitting and receiving ski lift utilization information, storage means for storing the transmitted and received ski lift utilization information, and the storage means and the communication means are connected to control these means. A portable data carrier slave unit that is carried by a ski lift user, and has a control unit, and each unit is an internal power source of each unit by the magnetic induction switching power supply unit, Magnetic field generating means for generating an induced current in the induction coil, communication means for wirelessly transmitting ski lift utilization information to the data carrier slave unit, and these means connected to the communication means and the magnetic field generating means. A data carrier including a data carrier base unit installed at a ski lift platform having control means for controlling and power supply to each means. It discloses a system.

Further, the present invention further comprises a communication means for wirelessly transmitting and receiving the usage information of the transportation facility, a storage means for storing the usage information of the transportation facility, and the storage means and the communication means, which are connected to each other. A data carrier slave unit that has a control means for controlling and uses the magnetic induction switching power supply device as an internal power source and is carried by a transportation user, and generates an induction current in an induction coil in the data carrier slave unit. For generating traffic information between the magnetic field generating means and the data carrier slave unit, a control means for connecting these communication means and the magnetic field generating means to control these means, and each of the means. A data carrier system comprising a data carrier master unit having a power supply is disclosed.

[0013]

The magnetic induction switching power supply device according to the present invention connects the power supply to the external electric circuit only when the current generated by the change in the magnetic flux density passing through the induction coil is equal to or more than the predetermined threshold value. After the time is measured, the power supply is disconnected from the internal electric circuit again, so that the power consumption of the power supply is saved.

The data carrier slave unit according to the present invention is generated when the owner passes near the data carrier master unit, that is, when the owner moves in a direction non-parallel to the magnetic field generated by the data carrier master unit. The change in the magnetic flux density passing through the induction coil is used as the switch means. That is, only when the magnetic flux density penetrating the induction coil is changed in the magnetic induction switching power supply device in the data carrier slave unit and the induced current is equal to or more than a predetermined threshold value, the switch means switches the power supply to the communication means and the control means. And storage means. After the connection is completed, the communication means communicates with the data carrier master unit using the supplied power, and the control means updates the contents of the storage means based on the communication information.

The data carrier master unit according to the present invention always generates a magnetic field of sufficient strength from the magnetic field generating means in order to activate the magnetic induction switching type power supply unit of the data carrier slave unit passing through the vicinity. The magnetic field communicates with the data carrier slave unit whose communication means and control means are activated. Hereinafter, the present invention will be described in more detail based on examples.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a magnetic induction switching power supply unit according to an embodiment of the present invention and connections to peripheral circuits. Figure 1
FIG. 1A shows an example in which a breaking means is provided in the magnetic induction switching power supply device, and FIG. 1B shows an example in which an external electric circuit issues a breaking signal. The induction coil 1 is for inducing a current by a change in magnetic flux density passing through the coil.

The output of the induction coil 1, that is, the induced electromotive force is connected to the current comparator 5. Normally, various magnetic fields are generated around the induction coil 1 due to the disturbance of the earth's magnetism, the influence of the magnetic field generated by the high-frequency high-voltage equipment installed in the periphery, and the like. The small current due to the disturbance of the magnetic flux is cut,
The current comparator 5 activates the power supply connection signal A only when a predetermined threshold current is generated.

The switch means 3 is a switching circuit composed of a switching transistor, a flip-flop circuit or a relay. Normally, a and c are opened and the current from the power supply is cut off to prevent power consumption. However, when the power supply connection signal A from the induction coil 1 becomes active, a and c are connected to supply a current from the power supply to an external electric circuit (not shown). The external electric circuit can be operated by supplying a current through the path 2-B-c-a-C in the figure.

The interruption means 4 in FIG. 1A is a clock,
A counting circuit including a counter and the like. Counting is started at the same time when power supply to the external electric circuit is started, and a cutoff signal D is generated to the current switch means 3 after a predetermined count, that is, after a lapse of a predetermined time. Upon receiving the cutoff signal D, the power supply switch means 3 opens the connection between the power supply 2 and an external electric circuit.

Here, the threshold value of the current comparator 5 is set on the basis of a current value generated by a sufficiently large coil penetration magnetic flux density to be originally detected. Also, the blocking means 4
The time to be counted is preset based on the time until the external electric circuit completes a predetermined process after the power supply is connected.

According to the embodiment of the magnetic induction switching type power supply device shown in FIG. 1A, the output of the induction coil 1 is not directly connected to the switch means 3, and the current amount is judged by the current comparator 5. Therefore, the power supply 2 is connected to the internal electric circuit only when there is a penetration of a predetermined magnetic flux density, and an erroneous start of the electric circuit due to magnetic noise is prevented.

Further, since the shut-off means 4 always generates the shut-off signal D after the completion of the measurement of the predetermined amount, even if it takes a long time to process the external electric circuit due to some reason,
There is an effect that it is possible to forcibly terminate the processing on the way and prevent the power supply power loss.

On the other hand, FIG. 1B shows a different embodiment of the magnetic induction switching type power supply device of the present invention. Switch means 3
Has a function of cutting off the power supply by inputting a cutoff signal from an external electric circuit. After completing a certain process, the external electric circuit outputs a cutoff signal D to the switch means 3 in order to cause the switch means 3 to cut off the power supplied to itself. The switch means 3 receives the input of the signal and cuts off the power supply to the electric circuit.

When the processing time performed by the electric circuit is long or short depending on the event, it is possible to wait until the respective processing is completed and then immediately cut off the current. Therefore, in comparison with the embodiment of FIG. There is a feature that the processing is not terminated midway due to the time over, and there is an effect that loss of power source power can be prevented while maintaining the integrity (completeness) of the processing in the electric circuit.

Also in this embodiment, the breaking means 4 in the embodiment of FIG. 1 (A) can be installed in parallel. The cutoff signal is logically ORed with the signal output from the external electric circuit and the signal output after counting up of the own cutoff means 4 and input to the switch means 3. When the processing of the external electric circuit is completed in a time shorter than the set time for the breaking means 4, the power supply is stopped by the cutoff signal D output from the external electric circuit, while the processing time of the external electric circuit is kept for a predetermined time. In the case of exceeding the limit, the power supply is stopped by the signal output after the interruption means 4 has counted up.

FIG. 2 shows an embodiment of a data carrier system comprising a data carrier slave unit 9 and a data carrier master unit 8 which have the magnetic induction switching type power supply unit of the present invention as a main part. First, the configuration of the data carrier slave unit 9 will be described. Inside, a magnetic induction switching type power supply device 6 according to the present invention
Is shown in a dotted frame. What has been shown as an external electric circuit in the above embodiments is, here, a communication means 10 for communicating with another station (master station), a means 12 for storing information based on the communication content, and this communication means 10. Is shown as control means 11 for controlling the operation of the storage means 12 of FIG.

The communication means 10 is means for performing data transmission with the data carrier base unit 8 installed at a distant place by wireless communication with very small power or optical communication with infrared light. The storage unit 12 is a unit for storing and accumulating the result processed by the data transmission result control unit 11. In general, such a storage means can be read / written at any time, and moreover, the contents of the storage means need to be held, so it is preferable to use a nonvolatile RAM.
In this case, a small amount of electric power is normally supplied by the power supply line 15 in order to hold the stored contents.

Next, the data carrier base unit 8 will be described. The data carrier master unit 8 is connected to the communication unit 14 for communicating with the data carrier slave unit 9, the control unit 13 for controlling the operation thereof, and the induction coil 1 in the magnetic induction switching power supply unit of the data carrier slave unit 9. The magnetic field generating means 7 for penetrating a magnetic flux density having a sufficient strength to generate a current equal to or higher than a threshold is a main constituent element. A magnetic field is usually generated from the magnetic field generating means 7.

Now, by using a ski lift lift system as an example, it is shown what kind of procedure is performed between the data carrier slave unit 9 and the data carrier master unit 8 (hereinafter, "master unit 8"). 3 (A), (B), and (C). 3A, 3B, and 3C show the arrangement of the main parts of each device as viewed from above.

The data carrier slave unit 9 is held by each user of the lift. For example, when a radio is used as a communication means with the master unit 8, it may be put in a pocket or the like. The switch means 3 in the data carrier slave unit 9 is in a power-off state during a state away from the radio 8, for example, while skiing, so that power consumption is prevented. In this embodiment, the number of times the lift is used is accumulated and stored in the storage means 12.

The main unit 8 is separated into 8 and 8'and installed near the entrance of the lift. The magnetic field generating means 7 and 7'are magnetized so that their N and S poles face each other, and a magnetic field M → M 'as shown in the figure is provided between 7 and 7'.
Is formed. Not limited to such a magnetic field forming method, for example,
The magnetic field may be formed by alternating mutual induction. A user carrying the data carrier slave unit 9 passes between the magnetic fields.

FIG. 4A shows a state in which the data carrier slave unit 9 has just come near the magnetic field M → M ′. In the data carrier slave unit 9, it is preferable that the induction coil 1 traverses in a direction perpendicular to the magnetic field as much as possible based on the law of electromagnetic induction. For this purpose, it is desirable to provide the induction coil 1 on a plate that can rotate freely around the rotation axis, and to install a small magnet showing an S pole on this plate. This plate is magnetic field M →
When entering M ', the rotation axis turns so that the induction coil 1 is orthogonal to the magnetic field. At this time, an induced electromotive force is generated in the induction coil 1 in the data carrier slave unit 9 due to the effect of the penetrating magnetic field lines due to the magnetic field M → M ′, and the current comparator 5 has the generated current reaching a predetermined threshold value. , The communication unit 10 and the control unit 1 in FIG.
1 is activated (power is supplied).

FIG. 4B is a diagram showing the state immediately after the owner of the data carrier slave unit 9 has passed the magnetic field M → M ′. The data carrier child device 9 starts communication with the parent device 8. Here, the I specific to the data carrier slave unit 9 is preset.
If D (registration number) is set, the parent device 8 side can grasp the lift utilization status of each data carrier child device 9 holder by transmitting the ID.
Further, the information stored in the storage means 12, for example, the number of times the lift has been used can be updated. After completion of such a series of processing, the control means 11 in the data carrier slave unit 9
Generate a shutoff signal.

In this embodiment, there is a communication procedure with the base unit 8 after the activation of the electric circuit, but this is effective in accurately counting the lift utilization state. This is because even if there is the current comparator 5, the communication means 10 and the control means 11 may be activated in response to some disturbance of the magnetic field. In this case, if the communication means 10 does not exist and the number of lifts used immediately after starting is updated,
There is a problem that the number of times the lift is used is updated more and more due to erroneous activation.

After the circuit is activated, it is important to contact the base unit 8 again, and after it is contacted, it is judged that the lift is to be used and the number of times of use is updated. In case of a false start,
Since the electromagnetic wave and the infrared light are out of the reachable range, the communication with the base unit 8 is unsuccessful and the number of times the lift is used is not updated. It should be noted that if the number of times of use of the lift itself is managed on the base unit 8 side in ID units, it is easier to collect and charge.

FIG. 4C shows a state after a series of processing is completed. In the data carrier slave unit 9, the control means 1
The switch with the power source 2 is in the open state by the shut-off signal D generated by 1 or the shut-off signal D generated by the counting up of the shut-off means 4 to save the power supply.

These devices can be applied to a transportation system. For example, in the case of a railway, the data carrier base unit 8 is installed at the ticket gate of the station, and each user has a data carrier handset 9 instead of a conventional ticket or commuter pass.
When boarding, the boarding station name is transmitted from the parent machine 8 as data, and the data carrier child machine 9 stores the boarding station name in the storage means 12. When getting off, the boarding station name is read from the storage means 12 and transmitted to the base unit 8 together with the ID. On the base unit 8 side, the charge for the boarding section is calculated, and the usage charge is deducted from a predetermined financial institution account registered by the ID.

There is an effect that the user of the transportation facility can use the transportation without touching any cash, the congestion at the ticket office and the vicinity of the ticket gate is alleviated, and the accurate and smooth billing is possible. .

[0039]

As described above, according to the magnetic induction switchgear type power supply device of the present invention, it is possible to provide a portable electronic device capable of suppressing the power consumption of the battery power supply and operating for a long time.

Further, according to the data carrier system of the present invention, it is possible to reduce the power consumption of the data carrier slave unit, and it is possible to check whether the activation is an erroneous activation or not by the communication means to communicate with the master unit. The effect is that a highly reliable system can be constructed.

When used in a ski lift system or a transportation system, it is possible to construct a convenient and smooth system without the need for the user to use the lift or transportation means. There is an effect that.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of a magnetic induction switching type power supply device according to an embodiment and connections between components.

FIG. 2 is a diagram showing a configuration of a data carrier system according to an embodiment.

FIG. 3 is a diagram for explaining use of a data carrier system according to an embodiment.

FIG. 4 is a diagram showing a configuration of a conventional data carrier system.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 induction coil 2 power supply 3 switch means 4 breaking means 5 current comparator 6 magnetic induction switching power supply device 7, 7'magnetic field generating means 8, 8'data carrier master device 9 data carrier slave device 10 communication means (slave device) 11 Control means (child device) 12 Communication means (child device) 13 Control means (master device) 14 Communication means (master device) 15 Power supply line H Magnetic field M → M ′ Magnetic field direction N, S Magnetic pole polarity Y → Y ′ Handset movement direction A Power supply connection signal B Power supply / switch means wiring C Switch means / external electric circuit wiring D Breaking signal a, b, c Switch means internal terminal

Claims (7)

[Claims] 1. An induction coil, a current comparator which is connected to the induction coil and which emits a connection signal when a current value induced when the induction coil crosses a magnetic field is equal to or more than a threshold value, a power supply circuit, and A switch means for connecting to a current comparator and receiving the connection signal to close a switch for applying power from the power supply circuit to an external electric circuit, and an elapsed time from the time when the switch is connected and connected to the switch means as a starting point. A magnetic induction switchgear type power supply device comprising: a cutoff unit that cuts off the switch by sending a cutoff signal for opening the switch of the power supply circuit to the switch unit at a predetermined time after measurement. 2. An induction coil, a current comparator which is connected to the induction coil and which emits a connection signal when a current value induced when the induction coil crosses a magnetic field is equal to or more than a threshold value, an electric circuit, and Switch means for connecting to a current comparator and receiving the connection signal to close a switch for applying power from the power supply circuit to an external electric circuit, and a time when the switch is connected to the external electric circuit and the switch is closed A magnetic induction switchgear type power supply device comprising: a cutoff means for measuring the time and sending a cutoff signal for opening the switch of the power supply circuit to the switch means at a predetermined time to cut off the switch. 3. The magnetic induction switchgear type power supply device according to claim 1 or 2, which is a portable type including an external electric circuit,
And the magnetic field is magnetic field generating means in a fixed position,
Further, the threshold value in the current comparator is a magnetic induction switching type power supply device having a value that can be distinguished from a noise magnetic field from other than the magnetic field generating means. 4. A communication means for transmitting and receiving data to and from a data carrier master station, a storage means for storing data to be transmitted and received, and a control means connected to the storage means and the communication means for controlling these means, A data carrier system comprising a portable data carrier slave unit using the magnetic induction switching type power supply device according to claim 1 or 2 as an internal power supply for each means. 5. A magnetic field generating means for generating an induced current in the induction coil, a communication means for exchanging data between the data carrier slave unit according to claim 4, the communication means and the magnetic field generating means. A data carrier system provided with a data carrier master unit having control means driven by an external power source, while being connected to the above to control these means. 6. Communication means for wirelessly transmitting and receiving ski lift usage information, storage means for storing the ski lift usage information to be transmitted and received, and control means for connecting to the storage means and the communication means to control these means. Claim 1 or 2
The magnetic induction switching power supply device according to the description, each of the means as an internal power supply for each means, equipped with a portable data carrier slave unit that can be carried by ski lift users, the induction current in the induction coil in the data carrier slave unit. Magnetic field generating means for generating, communication means for wirelessly transmitting ski lift utilization information to the data carrier slave unit, and control means for connecting these communication means and the magnetic field generating means to control these means, A data carrier system, comprising a data carrier master unit installed at a ski lift landing and having a power source for each of the above means. 7. A communication unit for wirelessly transmitting and receiving transportation facility usage information, a storage unit for storing the transportation facility usage information to be transmitted and received, and a control for connecting to the storage unit and the communication unit and controlling these units. And a data carrier slave unit that is carried by a transportation user and has the magnetic induction switching power supply unit according to claim 1 or 2 as an internal power supply, and an induction current is applied to an induction coil in the data carrier slave unit. A magnetic field generating means for generating a traffic information, a communication means for exchanging traffic information between the data carrier slave unit, a control means for connecting the communication means and the magnetic field generating means to control these means, and A data carrier system comprising a data carrier master unit having a power source for each means.