JP4203686B2 - Dental chair unit controller - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a chair posture control of a chair unit and a control method for a plurality of dental treatment instruments, and more particularly to a control device for a dental chair unit that enables non-contact and proximity control.
[0002]
[Prior art]
In the chair unit for dental treatment, control by the foot controller of the chair unit body and the plurality of instruments is provided with an on / off control switch, a variable resistor, etc. in the foot controller in order to adjust the control output. The chair operation lever and the control pedal for operating these were provided.
And the said foot controller was mounted on the floor surface of an examination room, and it was performed when a practitioner operated and displaced with a leg | foot.
The on / off switch for connecting the foot controller and the chair unit main body and the signal output for the instrument are arranged on the floor surface in a state where a plurality of signal lines are bundled and stored in a tube. I was allowed to.
However, there is a risk that the practitioner or patient may catch or trip on the tube, and the tube may be stepped on or pulled when the practitioner moves the foot controller. May be damaged, and the aesthetics are not good.
[0003]
On the other hand, there are those that use infrared light etc. to control the optical modulation signal communication system transceiver by attaching it to the foot controller and chair unit respectively, but because the optical communication system has directivity, Regardless of the medical position, the direction of the light emitting element of the foot controller must be limited to a certain range, or a plurality of either or both of the light emitting element side and the light receiving element side must be arranged in order to widen the communication direction.
In the case of a pair of light emitting / receiving elements, the practitioner must ensure a constant direction of the light emitting element of the foot controller, which is not only inconvenient for medical practice but also has a risk of erroneous operation.
In addition, the arrangement of a plurality of light-emitting elements or light-receiving elements is complicated mechanically, and at the same time, it is necessary to take measures for preventing malfunctions with other adjacent chair units. There was a possibility.
[0004]
[Problems to be solved by the invention]
Therefore, in order to solve the problems of the prior art, the present invention eliminates the directivity as in the optical communication method without causing the floor surface of the tube that couples the foot controller and the chair unit body, and reduces the cost and Provided is a dental chair unit control device that is excellent in safety and aesthetically pleasing.
[0005]
[Means for Solving the Problems]
As a result of intensive studies in view of the above, the present inventor has solved this problem by the following means.
(1) In a dental chair unit control apparatus that performs chair posture control, drive control of a plurality of instruments, etc., (a) a foot controller having a flat transmitting / receiving antenna on the bottom surface, and (b) flat transmitting / receiving (C) a control signal cable interposed between the mat and the chair unit main body, (d) and A dental chair unit control device, characterized in that a contact signal communication is not provided between the foot controller and the mat without providing a control signal cable.
(2) The (d) non-contact signal communication between the (a) foot controller and the (b) mat is a non-contact proximity facing communication method in which the foot controller is placed on the mat for communication. The (a) foot controller and (b) each of the flat transmitting / receiving antennas disposed between the mats are brought close to each other to generate an electromagnetic induction phenomenon, and a plurality of chair operation signals transmitted from the foot controller and The chair unit is controlled via the control signal cable by operating the posture control of the chair of the mat and a plurality of instrument drive control circuits according to a displacement amount signal of the control pedal. The control apparatus for a dental chair unit according to item 1).
[0006]
(3) (a) The foot controller is placed on (b) the mat, and the flat transmitting / receiving antennas arranged on the mat are opposed to each other, and the electromagnetic induction electromotive force transmitted from the mat causes the inside of the foot controller. The dental chair unit control device according to item (1) or (2), wherein all direct current power consumed by the device is generated.
(4) The foot controller has a flat transmitting / receiving antenna on the bottom surface, a filter for selecting a predetermined high frequency received by the transmitting / receiving antenna, a power receiving circuit for detecting and amplifying, a power supply circuit for generating DC power from the output signal, and A CPU / control signal encoder that encodes a plurality of foot control switch signals and a displacement signal of the control pedal into a digital signal, and an amplification / transmission circuit that modulates the CPU / control signal encoder output signal and outputs the modulated carrier wave The dental chair according to any one of (1) to (3), characterized in that the amplification / transmission circuit output modulated carrier wave is output as an electromagnetic wave from the flat transmitting / receiving antenna. Unit control device.
[0007]
(5) The mat is a flat plate-shaped non-magnetic material, and generates a predetermined high frequency for transmitting power to the DC power source and the foot controller consumed in the mat by the power sent from the chair unit body fixed inside. A power transmission circuit that modulates at a predetermined high frequency generated by the power supply circuit and outputs a modulated carrier wave, a flat transmission / reception antenna for outputting the power transmission circuit output modulated carrier wave as an electromagnetic wave, and the transmission / reception A band filter that detects a modulated carrier wave received by an antenna and separates the modulated carrier wave into frequencies for each control signal, a decoder that decodes and identifies the output signal, and a chair unit main body and a plurality of dental treatment instruments based on each decoder output signal An on / off control circuit for controlling the control, a D / A conversion circuit for generating a displacement signal of the control pedal, It characterized by having a CPU for controlling the circuit (1) to (4) dental chair unit control apparatus according to any one of clauses.
[0008]
(6) The dental chair unit body receives a plurality of on / off control circuit output signals and D / A conversion circuit output signals sent by the signal lines from the mat, so that the chair of the dental chair unit body The dental chair unit control device according to any one of (1) to (5), wherein posture control and drive control of a plurality of dental treatment instruments are performed.
(7) The dental chair unit control device according to any one of (1) to (6), wherein the mat is made of non-conductive rubber or resin.
(8) The dental chair unit control device according to any one of (1) to (7), wherein the entire surface of the mat upper surface and the bottom surface of the foot controller is a flat surface.
(9) One or a plurality of concave grooves are formed on the upper surface of the mat, and a convex protrusion that fits into the concave groove of the mat is provided on the bottom surface of the foot controller. The dental chair unit control device according to any one of claims (1) to (7).
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the configuration and operation of a dental chair unit control apparatus according to an embodiment of the present invention will be described with reference to the drawings.
1 is an external perspective view of a dental chair unit of the present invention, FIG. 2 is an external view of a foot controller having a convex protrusion, FIG. 3 is an external view of a mat having a concave groove, and FIG. 4 is a dental chair unit of the present invention. It is a circuit block diagram of a control device.
1-4, 1 is a chair unit body, 2 is a foot controller, 3 is a mat, 4 is a chair operation lever, 5 is a control pedal, 6 is a CPU / control signal encoder, 7 is an amplification / transmission circuit, 8 is Transmission / reception antenna, 9 power receiving circuit, 10 power supply circuit, 11 transmission / reception antenna, 12 band filter, 13 decoder, 14 on / off control circuit, 15 D / A conversion circuit, 16 CPU, 17 A power supply circuit, 18 is a power transmission circuit, 19 is a chair instrument control drive circuit, 20 is a cable, 21 is a chair, 22 is an instrument, 23 is a concave groove, and 24 is a convex protrusion.
[0010]
As shown in FIG. 1, the mat 3 is installed on the floor around the chair unit main body 1 at a position where a practitioner can easily operate.
The mat 3 is plate-shaped and is semi-fixed at the predetermined position, but the position can be moved.
Furthermore, the shape and size of the mat 3 can be freely produced and selected. And although the said mat 3 is connected to the said chair unit main body 1 with the cable 20, the length of this cable 20 is short and does not move in the state in which the said mat 3 was installed.
The foot controller 2 is placed on the mat 3 and wirelessly communicates with the mat 3 in a cordless manner. Therefore, it can be operated by freely moving within the range of the mat 3.
[0011]
Next, the operation of the dental chair unit controller of the present invention will be described with reference to the block diagram of FIG.
The power supply circuit 17 in the mat 3 is supplied with power from the chair unit main body 1 and supplies stabilized DC power consumed in the mat 3, and also amplifies the basic clock frequency of the CPU 16, and the amplified basic clock frequency is The power transmission circuit 18 transmits the modulated carrier wave output from the loop transmission / reception antenna 11 as a modulated carrier wave output, and receives it by the loop transmission / reception antenna 8 provided on the bottom surface of the foot controller 2. The modulated carrier wave received by the transmission / reception antenna 8 of the foot controller 2 is recovered by a power receiving circuit 9 that is separated by a high-pass filter and detected and amplified, and the basic clock frequency is rectified and stabilized by the power supply circuit 10. A power source that consumes DC power in the foot controller 2 is used.
[0012]
The foot controller 2 includes a plurality of chair operation levers 4 and a control pedal 5, and a CPU / control signal encoder 6 that uses the basic clock reproduced by the power receiving circuit 9 as a timing signal, The displacement signal of the control pedal 5 is encoded into a digital signal.
The output signal of the CPU / control signal encoder 6 is modulated by the amplification / transmission circuit 7 and outputted as a modulated carrier wave, and outputted from the transmission / reception antenna 8 as an electromagnetic wave.
[0013]
Further, the mat 3 detects the modulated carrier wave received by the transmission / reception antenna 11 by the band filter 12 and classifies the modulated carrier wave into frequencies for each control signal. Each separated control signal is restored by the decoder 13 to the above-mentioned switching signal of the chair operation lever 4 and the digital signal of the displacement signal of the control pedal 5, and the on / off control circuit 14 reproduces the switching signal of the chair operation lever 4. Then, the displacement signal of the control pedal 5 is reproduced by the D / A conversion circuit 15.
The switch signal of the chair operation lever 4 and the displacement signal of the control pedal 5 reproduced by the on / off control circuit 14 and the D / A conversion circuit 15 are sent to the instrument control drive circuit 19 of the chair unit body 1 through the cable 20. The chair 21 controls the posture of the chair 21 and controls a plurality of dental treatment instruments 22. The CPU 16 supplies a basic clock signal and clock signals necessary for all the circuits of the mat 3 and performs computer control.
[0014]
Non-contact, close-facing communication type transmission / reception wave composed of the loop-shaped transmission / reception antenna 11 of the mat 3 and the loop-shaped transmission / reception antenna 8 provided on the bottom surface of the foot controller 2 placed on the mat 3. The power is set to a radio wave power enough to cause transmission / reception to be interrupted when the foot controller 2 is detached from the mat 3.
In order to prevent malfunctions due to external radio waves or impulse noise, CPU / control signals such as transmission / reception of a predetermined continuous pulse when there is no operation, use of two or more waves per operation (one function) when operating the chair operation lever, etc. Corresponds to encoding at the encoder 6. 2 and 3, a convex protrusion 24 projecting from the bottom surface of the foot controller 2, one or more recessed grooves 23 formed on the top surface of the mat 3, and the foot controller 2 on the mat 3. Since the practitioner operates the foot controller 2 with his / her foot, the practitioner can rotate left and right around the protrusion 24 or move the foot controller 2 along the concave groove 23. The controller 2 can be freely selected in a position and a direction corresponding to the medical posture of the practitioner.
[0015]
【The invention's effect】
According to the present invention, the following excellent effects are exhibited.
1. According to the invention of claim 1 of the present invention,
In a dental chair unit control apparatus that performs chair posture control and drive control of a plurality of instruments, etc., a foot controller having a flat transmission / reception antenna on the bottom surface, a flat transmission / reception antenna and chair posture control, a plurality of A mat provided with an instrument control drive circuit and a control signal cable interposed between the mat and the chair unit body, and no control signal cable is provided between the foot controller and the mat. Because it is non-contact signal communication,
The operation control of the cordless chair unit by the foot controller with a simple structure can be executed reliably and without malfunction.
2. According to the invention of claim 2,
The non-contact signal communication between the foot controller and the mat is a non-contact proximity facing type communication method in which the foot controller is placed on the mat for communication, and each flat surface disposed between the foot controller and the mat is flat. An electromagnetic induction phenomenon is generated by causing the transmitting and receiving antennas to face each other close to each other, and a plurality of chair operation signals transmitted from the foot controller and a displacement signal of the control pedal are used to control the posture of the mat chair and a plurality of instruments. Since the drive control circuit is operated and the chair unit is controlled via the control signal cable,
Because it is omnidirectional and can be controlled by sending and receiving weak radio wave power, the placement direction and position of the foot controller necessary for dental treatment can be freely selected, and if the foot controller is detached from the mat, it is erroneous. Even if the foot controller is operated, it does not operate, and even if the direction of the foot controller is facing another chair unit, it does not face each other, and the radio wave power is weak, so there is no malfunction and safe and reliable operation It can be performed.
3. According to the invention of claim 3,
An electromagnetic induction phenomenon is generated by placing a foot controller on a mat and flat transmitting / receiving antennas arranged in close proximity to each other. The electromagnetic induction electromotive force generates all DC power consumed inside the foot controller. can do.
Therefore, the foot controller does not require a battery or an external power source, is compact and easy to handle, and has a low running cost.
[0016]
4). According to the invention of claim 4,
Since the foot controller has various communication circuits for the mat and the operation range is limited to the mat, communication by radio waves can be performed in a state where the surroundings are shielded and in a non-contact manner at a close distance.
5. According to the invention of claim 5,
Since the mat has various circuits for controlling the chair unit and can be installed on a wide range of floors, a position suitable for the operation of the practitioner can be selected.
6). According to the invention of claim 6,
The chair unit body receives the output signal sent from the signal line from the mat, thereby controlling the posture of the chair in the chair unit body and controlling the driving of multiple dental treatment instruments. The chair unit is easy and reliable, and the chair unit is easy to control.
[0017]
7). According to the invention of claim 7,
Since the mat is made of non-conductive rubber or resin, there is almost no attenuation of radio waves, and transmission / reception can be performed with weak radio wave power.
8). According to the invention of claim 8,
Since the entire upper surface portion of the mat and the bottom surface portion of the foot controller are flat surfaces, the practitioner can freely select the position and direction most appropriate for the medical posture of the foot controller.
9. According to the invention of claim 9,
By fitting one or more concave grooves carved on the top surface of the mat with the convex protrusions projecting on the bottom surface of the foot controller, the mat can be removed even if the foot controller is moved with the foot. Therefore, the foot controller can be rotated or moved around the fitting point, and the practitioner can select an appropriate position and direction for the medical posture.
[Brief description of the drawings]
FIG. 1 is an external perspective view of a dental chair unit according to the present invention.
FIG. 2 is an external view of a foot controller having a convex protrusion.
FIG. 3 is an external view of a mat having a concave groove.
FIG. 4 is a circuit block diagram of the dental chair unit control device of the present invention.
[Explanation of symbols]
1: Chair unit body 2: Foot controller 3: Mat 4: Chair operation lever 5: Control pedal 6: CPU / control signal encoder 7: Amplification / transmission circuit 8: Transmission / reception antenna 9: Power reception circuit 10: Power supply circuit 11: Transmission / reception Antenna 12: Bandpass filter 13: Decoder 14: On / off control circuit 15: D / A conversion circuit 16: CPU
17: Power supply circuit 18: Power transmission circuit 19: Chair instrument control drive circuit 20: Cable 21: Chair 22: Instrument 23: Concave groove 24: Convex protrusion

Claims (9)

In a dental chair unit control device that performs chair posture control and drive control of multiple instruments, etc.
(A) a foot controller having a flat transmitting / receiving antenna on the bottom surface;
(B) a mat provided with a flat transmission / reception antenna and chair posture control, and a plurality of instrument control drive circuits;
(C) a control signal cable interposed between the mat and the chair unit body (d) and non-contact signal communication between the foot controller and the mat without providing a control signal cable.
A dental chair unit controller characterized by that. The (d) non-contact signal communication between the (a) foot controller and the (b) mat is a non-contact proximity facing communication method in which the foot controller is placed on the mat for communication.
(A) The electromagnetic induction phenomenon is generated by causing the flat transmitting and receiving antennas disposed between the foot controller and the (b) mat to face each other close to each other,
A chair unit is operated via the control signal cable by operating the chair chair posture control and the plurality of instrument drive control circuits according to a plurality of chair operation signals and a control pedal displacement signal transmitted from the foot controller. The dental chair unit control device according to claim 1, wherein the control device controls the dental chair unit. (A) A foot controller is placed on (b) a mat, flat transmitting and receiving antennas arranged on the mat are placed close to each other, and all of the power consumed inside the foot controller is generated by electromagnetic induction electromotive force transmitted from the mat. 3. The dental chair unit control device according to claim 1, wherein the dental chair unit control device generates direct-current power. (A) The foot controller has a flat transmission / reception antenna on the bottom surface, a filter for selecting a predetermined high frequency received by the transmission / reception antenna,
A power receiving circuit for detecting and amplifying, a power supply circuit for generating DC power from its output signal, and
A CPU / control signal encoder that encodes a plurality of foot control switch signals and a displacement signal of the control pedal into a digital signal;
An amplification / transmission circuit that modulates with the CPU / control signal encoder output signal and outputs it as a modulated carrier wave,
The dental chair unit control device according to any one of claims 1 to 3, wherein the amplifying / transmitting circuit output modulated carrier wave is output as an electromagnetic wave from the flat transmitting / receiving antenna. (B) The mat is a flat plate-like nonmagnetic material,
A DC power source consumed in the mat by the electric power sent from the chair unit main body fixed inside, a power supply circuit for generating a predetermined high frequency for transmitting electric power to the foot controller,
A power transmission circuit that modulates at a predetermined high frequency generated by the power supply circuit and outputs the modulated carrier wave; and
A flat transmitting and receiving antenna for outputting the power transmission circuit output modulated carrier wave as an electromagnetic wave;
A band filter for detecting a modulated carrier wave received by the transmission / reception antenna and classifying the modulated carrier wave into a frequency for each control signal;
A decoder that decodes and identifies the output signal;
An on / off control circuit for controlling the chair unit main body and a plurality of dental treatment instruments by output signals of the decoder;
A D / A conversion circuit for generating a displacement amount signal of the control pedal; and
The dental chair unit control device according to any one of claims 1 to 4, further comprising a CPU that controls the circuits. The dental chair unit body
By receiving a plurality of ON / OFF control circuit output signals and D / A conversion circuit output signals sent by the signal line from the mat,
The dental chair unit control device according to any one of claims 1 to 5, wherein the posture control of the chair in the dental chair unit main body and the drive control of a plurality of dental treatment instruments are performed. The dental chair unit control device according to any one of claims 1 to 6, wherein the mat is made of non-conductive rubber or resin. The dental chair unit control device according to any one of claims 1 to 7, wherein the entire surface of the mat upper surface and the bottom surface of the foot controller is a flat surface. 2. One or a plurality of concave grooves are formed on the upper surface of the mat, and a convex protrusion that fits into the concave groove of the mat is provided on the bottom surface of the foot controller. The dental chair unit control apparatus of any one of -7.

Images