JP2007129646A - Remote controller - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a remote controller capable of stably remotely controlling an electronic apparatus to be controlled even when being used in a state of being attached to a wall surface internally provided with a steel plate as well as in a state of being detached from the wall surface. <P>SOLUTION: The remote controller is attachable to and detachable from a wall surface and has a radio transmission circuit for transmitting a radio wave signal and transmits the radio wave signal from the radio transmission circuit to the electronic apparatus being the control object to control the operation of the electronic apparatus. The remote controller includes an impedance generation means for generating a prescribed impedance between this means and the radio transmission circuit by connecting with a ground potential and a switch means for switching connection and disconnection between the impedance generation means and the ground potential. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a remote control device, and in particular, appropriately controls the operation of an electronic device to be controlled even when attached to a wall surface provided with a steel plate or removed from a wall surface. The present invention relates to a remote control device that can be used.

  Conventionally, a radio wave transmitter that remotely controls the operation of an electronic device by transmitting a radio signal to the electronic device to be controlled has been widely put into practical use.

  This type of radio wave transmission device generally has a radio transmission circuit that transmits radio wave signals. The radio transmission circuit transmits radio wave signals to an electronic device to be controlled via a transmission antenna. The configuration is such that the operation of the electronic device is controlled by a signal.

  Some of the radio wave transmitters configured in this way are used in a state where they are attached and fixed to a pillar or wall surface. However, if there is a metal body (magnetic substance) in the vicinity of the radio wave transmitter attached or near it, The impedance of the antenna changes, the resonance frequency shifts, the transmission output (carrier level) of the radio signal decreases, and there is a problem that the operation of the electronic device cannot be normally remotely controlled.

Therefore, in recent years, a metal body which is a part of a housing constituting a transmission antenna and is attached to the radio wave transmission device or in the vicinity thereof by forming the mounting surface side of the radio wave transmission device with a metal body. Has been devised (see, for example, Patent Document 1).
JP 2001-34858 A

  However, the conventional radio wave transmission device can normally remotely control the operation of the electronic device when used in a state where it is fixed to the wall surface, etc. Since there was a possibility that the operation of the device could not be remotely controlled, it was difficult to apply to a remote control device that can be attached to and detached from a wall surface, such as a remote control device for a cleaning toilet seat device.

  That is, the remote control device for the toilet seat device is used by being detachably installed on a wall surface provided with a steel plate inside, such as a PVC steel plate, so when applying the conventional radio wave transmitter, When used while attached to a wall, the toilet seat device can be remotely controlled normally. However, if the user removes the remote control device from the wall and picks it up by hand, Since the distance to the steel plate changes, the impedance generated between the transmission antenna and the radio transmission circuit inside the remote control device and the steel plate changes, and the carrier level of the radio signal decreases, and as a result, There is a possibility that the cleaning toilet seat device cannot receive the radio wave signal accurately.

Therefore, in the present invention according to claim 1, there is provided a wireless transmission circuit that can be attached to and detached from the wall surface and transmits a radio signal, and by transmitting the radio signal from the wireless transmission circuit to the electronic device to be controlled. In the remote control device for controlling the operation of the electronic device, the impedance generating means for generating a predetermined impedance with the wireless transmission circuit by connecting to the ground potential, and the connection and disconnection of the impedance generating means and the ground potential And switch means for switching between the two.

  According to a second aspect of the present invention, in the remote control device according to the first aspect, the impedance generating means is a foil made of a conductive member formed on a printed circuit board.

  Moreover, in this invention which concerns on Claim 3, in the remote control apparatus of Claim 1 or Claim 2, predetermined | prescribed impedance attaches a remote control apparatus to the wall surface in which the steel plate is provided, and is impedance generation means. When the connection with the ground potential is disconnected, the impedance is approximately equal to the impedance generated between the steel plate and the wireless transmission circuit.

  Moreover, in this invention which concerns on Claim 4, in the remote control apparatus of any one of Claims 1-3, it detected with the carrier level detection means which detects the carrier level of a radio signal, and the said carrier level detection means And control means for performing control to switch the switch means so as to increase the carrier level when it is determined that the carrier level is lower than a predetermined value.

  Further, in the present invention according to claim 5, in the remote control device according to claim 4, the carrier level detection means includes a carrier level of the radio signal input to the transmission antenna for transmitting the radio signal in the radio transmission circuit. Is detected.

  According to a sixth aspect of the present invention, in the remote control device according to the fourth or fifth aspect of the present invention, the remote control device has a radio wave receiving circuit that receives a radio wave signal transmitted from a transmitting antenna, and the carrier level detecting means The carrier level of the radio signal received by the circuit is detected.

  According to a seventh aspect of the present invention, in the remote control device according to any one of the fourth to sixth aspects, the carrier level detection means detects the carrier level every time the remote control device is operated by the user. It is characterized by doing.

  Further, in the present invention according to claim 8, in the remote control device according to claim 7, the carrier level detection means outputs before the radio transmission circuit outputs the radio signal corresponding to the operation of the remote control device by the user. The carrier level is detected based on a test signal for detecting the carrier level.

  According to the present invention, the following effects can be obtained.

According to the first aspect of the present invention, there is provided a wireless transmission circuit that can be attached to and detached from the wall surface and transmits a radio wave signal. By transmitting the radio signal from the radio transmission circuit to an electronic device to be controlled, In the remote control device that controls the operation of the device, by connecting to the ground potential, the impedance generating means for generating a predetermined impedance with the wireless transmission circuit and the connection and disconnection between the impedance generating means and the ground potential are switched. Since the switch means is provided, when it is used in a state where it is attached to a wall surface provided with a steel plate inside, the switch means disconnects the connection between the impedance generating means and the ground potential, and is used with the switch means removed from the wall surface. When using the remote control device on the wall by connecting the impedance generation means and ground potential The difference between the impedance that occurs between the wireless transmission circuit and the ground potential when the remote control device is removed from the wall surface, and the impedance that occurs between the wireless transmission circuit and the ground potential when it is used. Therefore, the radio signal can be normally received by the electronic device to be controlled.

  Also, in the present invention according to claim 2, in the remote control device according to claim 1, the impedance generating means is a foil made of a conductive member formed on a printed circuit board. A remote control device that can transmit a stable radio signal to an electronic device with a simple structure not added can be provided at a relatively low cost, and the thickness of the remote control device does not increase. Appearance is not impaired.

  Moreover, in this invention which concerns on Claim 3, in the remote control apparatus of Claim 1 or Claim 2, predetermined | prescribed impedance attaches a remote control apparatus to the wall surface in which the steel plate is provided, and is impedance generation means. When the connection with the ground potential is cut off, the impedance generated between the steel plate and the wireless transmission circuit is approximately equal to the impedance. When the remote control device is attached to a wall surface where the impedance generating means and the ground potential are disconnected and the steel plate is not used, or when the remote control device is removed from the wall surface, the impedance generating means and the ground potential are used. Can be kept almost constant in all cases. As becomes, since the frequency or carrier level of the radio signal due to a change in impedance outputted from the radio transmitting circuit eliminates also be varied, it is possible to transmit a stable radio signal to the electronic device.

  Moreover, in this invention which concerns on Claim 4, in the remote control apparatus of any one of Claims 1-3, it detected with the carrier level detection means which detects the carrier level of a radio signal, and the said carrier level detection means And a control means for performing control to switch the switch means so as to increase the carrier level when it is determined that the carrier level is lower than a predetermined value. A signal can be transmitted.

  Further, in the present invention according to claim 5, in the remote control device according to claim 4, the carrier level detection means includes a carrier level of the radio signal input to the transmission antenna for transmitting the radio signal in the radio transmission circuit. Therefore, the carrier level can be detected from the standing wave ratio of the radio signal, and the matching state between the radio transmission circuit and the transmission antenna can also be detected.

  According to a sixth aspect of the present invention, in the remote control device according to the fourth or fifth aspect of the present invention, the remote control device has a radio wave receiving circuit that receives a radio wave signal transmitted from a transmitting antenna, and the carrier level detecting means Since the carrier level of the radio signal received by the circuit is detected, the radio signal transmitted from the transmitting antenna can be directly examined, so that the carrier level of the radio signal can be detected more accurately. .

  According to a seventh aspect of the present invention, in the remote control device according to any one of the fourth to sixth aspects, the carrier level detection means detects the carrier level every time the remote control device is operated by the user. Therefore, the impedance generated between the remote control device and the steel plate during operation is reduced, such as when the user operates the remote control device attached to the wall surface provided with the steel plate by hand. However, each time the carrier level is detected and the connection state between the impedance generating means and the ground potential can be switched by the switch means, a stable radio signal can be transmitted to the electronic device regardless of the usage mode of the remote control device. Can do.

Further, in the present invention according to claim 8, in the remote control device according to claim 7, the carrier level detection means outputs before the radio transmission circuit outputs the radio signal corresponding to the operation of the remote control device by the user. Since the carrier level is detected based on the carrier level detection test signal, the carrier level of the radio signal is detected from the test signal. Based on the detection result, the capacitance generating means and the ground potential Since the radio wave signal can be transmitted to the electronic device by switching the connection state by the switch means, the switch means can be switched before transmitting the radio signal to the electronic device, and a stable radio signal is transmitted to the electronic device. can do.

  The remote control device according to the present invention includes a wireless transmission circuit that transmits a radio signal, and transmits a radio signal from the wireless transmission circuit to an electronic device to be controlled, thereby providing a plurality of functions provided in the electronic device. It is operated by remote control.

  In addition, this remote control device can be used in a state where it is attached to a wall surface (for example, a PVC steel plate) provided with a steel plate (a plate made of a conductive member) inside, but removed from the PVC steel plate. Impedance generating means and switch means are provided so that a radio signal that can be stably received by an electronic device to be controlled can be transmitted even if the person picks up and uses it.

  This impedance generating means is provided in the vicinity of the wireless transmission circuit included in the remote control device, and specifically, is configured by a foil made of a conductive member formed on a printed board inside the remote control device.

  The impedance generating means generates a predetermined impedance composed of a capacitance component and an inductance component with the wireless transmission circuit by being connected to the ground potential.

  The ground potential here is a ground provided on the substrate inside the remote control device, and serves as a reference potential when the remote control device is operated.

  The switch means switches connection and disconnection between the impedance generation means and the ground potential.

  Then, by operating the switch means to connect the impedance generating means and the ground potential, a predetermined impedance is generated between the wireless transmission circuit and the impedance generating means, and the impedance generating means and the ground potential are By disconnecting the connection, the impedance generated between the wireless transmission circuit and the impedance generating means is made as small as possible.

  In particular, in this remote control device, with the remote control device removed from the PVC steel plate, a predetermined impedance generated in the wireless transmission circuit when the wireless transmission circuit is operated by connecting the impedance generating means to the ground potential, Impedance generated between the steel plate (earth) and the wireless communication circuit when the wireless transmission circuit is operated by disconnecting the connection between the impedance generating means and the ground potential with this remote control device attached to the PVC steel plate Are set in advance so that the area and thickness of the impedance generating means and the positional relationship with the wireless transmission circuit are set to be substantially equal to each other.

  Further, the remote control device is configured to detect a carrier level of a radio wave signal transmitted by the wireless transmission circuit, and to detect a carrier level when the carrier level detected by the carrier level detection unit is lower than a predetermined value. Control means for performing control to switch the switch means so as to increase the level.

That is, this control means controls the switch means so that the connection between the impedance generating means and the ground potential is disconnected in a state where the remote control device is attached to the PVC steel plate. Thus, when the wireless transmission circuit is operated, the impedance generated between the wireless transmission circuit and the steel sheet inside the PVC steel sheet becomes the above-described predetermined impedance. In addition, as an initial setting of the wireless transmission circuit, the resistance value of each element constituting the wireless transmission circuit so that the electronic device to be controlled can receive a radio wave signal satisfactorily with the remote control device attached to the PVC steel plate. By matching the capacitance value and the inductance in advance, matching between the wireless transmission circuit and the transmission antenna for transmitting the radio signal is performed.

  When the remote control device that is initially set in this way is used after being removed from the PVC steel plate by the user, the distance between the wireless transmission circuit and the steel plate inside the PVC steel plate increases, and the wireless transmission circuit The impedance generated between the steel plate and the steel plate changes (decreases), thereby causing the matching between the wireless transmission circuit and the transmitting antenna to be lost, and the carrier level of the radio signal transmitted to the electronic device is lowered.

  A drop in the carrier level at this time is detected by the carrier level detection means, and the control means controls the switch means based on the detection result to connect the impedance generation means and the ground potential.

  As a result, the predetermined impedance described above is generated between the wireless transmission circuit and the impedance generating means, and therefore, the wireless transmission circuit has an impedance substantially equivalent to that when the remote control device is attached to the PVC steel plate. The matching between the wireless transmission circuit and the transmission antenna is restored, and the carrier level of the radio signal transmitted to the electronic device is increased and returned to the original state.

  As a result, this remote control device can transmit a carrier-level radio signal that can be satisfactorily received by the electronic device to be controlled, whether it is attached to a PVC steel plate or held by a user. it can.

  Further, the carrier level detection means provided in the remote control device is configured to detect the carrier level of the radio signal input to the transmitting antenna from the radio signal generation circuit that generates the radio signal in the radio transmission circuit.

  Thereby, the carrier level can be detected from the standing wave ratio of the radio signal, and the matching state between the radio transmission circuit and the transmission antenna can also be detected.

  The remote control device further includes a radio signal receiving circuit that receives a radio signal transmitted from the transmitting antenna, and detects the carrier level of the radio signal received by the radio signal receiving circuit by the carrier level detecting means. It can also be configured.

  With this configuration, the carrier level of the actual radio signal transmitted to the electronic device can be directly detected, so that the carrier level of the radio signal can be detected more accurately.

  The carrier level of the radio wave signal is detected by the carrier level detection means every time the user operates the remote control device, so that even if the usage form of the remote control device changes, the user can When operating the remote control device, the operation of the switch means can be appropriately controlled by the control means, and the function of the electronic device can be remotely controlled stably.

In addition, when a user operates this remote control device, the wireless transmission circuit transmits a test signal, which is a radio signal for carrier level detection, before transmitting a radio signal for controlling an electronic device. The level detection means detects the carrier level of the radio signal for electronic device control indirectly by detecting the detection of the carrier level of the test signal.

  As a result, the control means can control the operation of the switch means to increase the carrier level of the radio signal before the radio transmission circuit transmits the radio signal for controlling the electronic device. When transmitting a radio signal corresponding to the above operation, it is possible to transmit a radio signal having a carrier level equal to or higher than a predetermined value, and to stably remotely control the electronic device.

(First embodiment)
Hereinafter, a first embodiment of a remote control device according to the present invention will be specifically described with reference to the drawings. In the following description, the electronic device to be controlled is a cleaning toilet seat device, and the case where the present invention is applied to a remote control device that remotely controls various functions of the cleaning toilet seat device will be described as an example. The invention is not limited to this, and has a wireless transmission circuit that can be attached to and detached from the wall surface and transmits a radio signal, and transmits the radio signal from the radio transmission circuit to an electronic device to be controlled. Thus, any remote control device can be applied as long as the operation of the electronic device is remotely controlled.

  1 and FIG. 2 are perspective views showing how the remote control device is used, FIG. 3 is a perspective view showing the remote control device, FIG. 4 is a schematic view showing the front side of the printed circuit board, and FIG. 5 is a printed circuit board. 6 is a functional block diagram showing the remote control device of the first embodiment, and FIGS. 7 and 8 are cross-sectional schematic diagrams showing impedances generated in the wireless transmission circuit. FIG. 10 is a flowchart showing the operation of the control circuit, and FIG. 10 is a functional block diagram showing the remote control device of the second embodiment.

(Description of usage mode of remote control device)
As shown in FIG. 1, the remote control device 1 is detachably mounted on a wall surface 4 of a toilet booth 3 in which a cleaning toilet seat device 2 is installed at a position where a user can easily operate.

  The wall 4 of the toilet booth 3 in which the washing toilet seat device 2 and the remote control device 1 are installed is a PVC steel in which the surface of the steel plate 5 is coated with a multilayer vinyl chloride (PVC) sheet 6 in consideration of hygiene and durability. It is formed by cocoons.

  The remote control device 1 includes operation buttons 7 corresponding to various functions such as a local cleaning function, a deodorizing function, a local drying function, and a toilet bowl cleaning function provided in the cleaning toilet seat device 2. By pressing the button, a radio signal corresponding to the operation is transmitted to the cleaning toilet seat device 2, and various functions of the cleaning toilet seat device 2 are remotely controlled to operate.

  As shown in FIG. 2, the remote control device 1 can be used by a user removing it from the wall surface 4 and holding it in his / her hand.

(Description of remote control device)
As shown in FIG. 3, the remote control device 2 has a substantially box shape, and a plurality of operation buttons 7 for operating various functions of the cleaning toilet seat device 2 and a cleaning device are provided on the front surface of the housing 8. A display panel 9 for displaying the current operation state of the toilet seat device 2 and the like is provided.

Further, a locking hole (not shown) for locking the remote control device 1 to the wall surface 4 is provided on the back side of the housing 8, and this locking hole is provided on the wall surface of the toilet booth 3 shown in FIG. By engaging with the hanger 10 attached to 4, the remote control device 1 is configured to be detachable from the wall surface 4.
Further, as shown in FIG. 4, the remote control device 1 includes a printed circuit board 1 inside a housing 8.
1 is provided on the front side of the printed circuit board 11, in addition to a radio transmission circuit 13 for transmitting a radio signal corresponding to the operation of the operation button 7 by the user to the cleaning toilet seat device 2, and a carrier level detection circuit to be described later 12, various electronic circuits 14 such as a sensor circuit 20 and a relay 21 (see FIG. 6) are formed.

  Further, as shown in FIG. 5, on the back side of the printed board 11, a shield 15 is provided at a position covering the area occupied by the wireless transmission circuit 13 from the back side of the printed board 11. A battery 16 that functions as a battery holder 17, and a battery holder 17 that extracts power from the battery 16.

  In particular, the shield 15 is formed of copper foil, and when the wireless transmission circuit 13 is operated while being connected to a ground potential (hereinafter referred to as “ground: GND 18”), the shield 15 is connected to the wireless transmission circuit 13. It functions as an impedance generating means for generating a predetermined impedance.

  Further, the shield 15 is connected to the GND 18 via a relay 21 that functions as a switch means, so that the state connected to the GND 18 and the state disconnected from the GND 18 can be switched by switching the relay 21. It is composed.

  In the present embodiment, copper foil is used as a member for forming the shield 15, but the member for forming the shield is not limited to this, and has conductivity, and is connected to the GND 18 to connect the radio transmission circuit. Any member can be used as long as it is a member that can generate a predetermined impedance.

  Next, functions of the remote control device 1 configured as described above will be described with reference to a functional block diagram of the remote control device 1 of the first embodiment shown in FIG.

  As shown in FIG. 6, the remote control device 1 includes a control circuit 19, an operation button 7, a display panel 9, a sensor circuit 20, a wireless transmission circuit 13, a carrier level detection circuit 12, a shield 15, and a relay. 21 and a power source 22. In addition, the code | symbol 18 in FIG. 6 has shown GND.

The control circuit 19 includes a central processing unit (CPU) and a memory that stores a program for operating the CPU, and controls the entire remote control device 1.

  The display panel 9 is a liquid crystal display device connected to the control circuit 19, and displays the current operation state of the remote control device 1 and the cleaning toilet seat device 2 based on the control by the control circuit 19.

  The operation button 7 is a button switch that is pressed when the user activates the function of the cleaning toilet seat device 2. Here, in order to simplify the description, the plurality of operation buttons 7 are represented by one block.

  The sensor circuit 20 is a pressure sensor connected to the operation button 7, and inputs a signal indicating the detection result to the control circuit 19 when it is detected that the operation button 7 is pressed by the user.

The wireless transmission circuit 13 includes a radio signal generation circuit 23 and a transmission antenna 24, and is connected to the control circuit 19. The radio signal generation circuit 23 generates a radio signal corresponding to the operation of the operation button 7 by the user based on the control signal input from the control circuit 19, and outputs the radio signal to the transmission antenna 24. A radio signal is transmitted from 24 to the cleaning toilet seat device 2.

  In addition, as an initial setting, this wireless transmission circuit 13 is configured so that each control-target electronic device can receive a radio wave signal satisfactorily with the remote control device 1 attached to a PVC steel plate. The wireless transmission circuit 13 and the transmission antenna 24 are matched by adjusting the resistance value, capacitance value, and inductance of the element in advance.

  The radio signal generation circuit 23 responds to the operation of the operation button 7 by the user when the control circuit 19 determines that the carrier level detected by the carrier level detection circuit 12 described below is lower than a predetermined value. Before outputting the radio wave signal, a test signal described later is generated and output to the transmitting antenna.

  The carrier level detection circuit 12 is a circuit that functions as carrier level detection means for detecting the carrier level of the radio signal output from the radio signal generation circuit 23 to the transmitting antenna 24, and a signal indicating the carrier level of the detected radio signal is received. This is output to the control circuit 19.

  When this detection result signal is input, the control circuit 19 sets the carrier level of the radio signal to a predetermined value (a carrier level at which the washing toilet seat device 2 can sufficiently receive) based on the detection result signal of the carrier level detection circuit 12. ) And a switching signal is output to the relay 21 when it is determined that the value is lower than the predetermined value.

  The shield 15 is formed of copper foil as described above, and is connected to the GND 18 via the relay 21 so as to be connectable / disconnectable, and functions as an impedance generating means for generating a predetermined impedance when connected to the GND 18. Is.

  As shown in FIG. 7, the shield 15 hardly generates impedance between the wireless transmission circuit 13 when the remote transmission device 1 is attached to the wall surface 4 and the wireless transmission circuit 13 is operated in a state where it is disconnected from the GND 18. At this time, a relatively large impedance (hereinafter referred to as “steel iron impedance C1”) is generated between the wireless transmission circuit 13 and the steel plate 8 in the wall surface.

  On the other hand, as shown in FIG. 8, the shield 15 is detached from the wall surface 4 when the user picks up the remote control device 1 and uses it, and operates the wireless transmission circuit 13 in a state of being connected to the GND 18. Then, a predetermined impedance (hereinafter referred to as “shield impedance C2 + C3”) is generated between the wireless transmission circuit 13 and the shield 15.

  At this time, since the wireless transmission circuit 13 and the steel plate 5 in the wall surface 4 are sufficiently separated from each other, a steel plate impedance C1 is almost generated between the wireless transmission circuit 13 and the steel plate 5. Absent.

Therefore, in particular, the shield 15 has an area, thickness, and thickness of the copper foil so that the shield impedance C2 + C3 generated in the state shown in FIG. 8 is substantially equal to the steel iron impedance C1 generated in the state shown in FIG. A grounding position is set in advance. The actual steel plate impedance C1 and shield impedance C2 + C3 include an inductance component, but in FIGS. 7 and 8, the steel plate impedance C1 and shield impedance C2 + C3 are shown for the sake of simplicity. Only the capacitance component is shown.

  The relay 21 functions as a switch unit that switches connection and disconnection between the shield 15 and the GND 18 based on a switching signal input from the control circuit 19.

  The power source 22 is two button batteries 16 and supplies power to each component of the remote control device 2. In FIG. 6, connection lines between the power source 22 and each component of the remote control device 2 are omitted for the sake of simplicity.

  By configuring the remote control device 1 with each of these components, the carrier level detected by the control circuit 19 by the carrier level detection circuit 12 when the user removes and uses the remote control device 1 attached to the wall surface 4. Is determined to be lower than a predetermined value, a switching signal is output to the relay 21 to switch the connection state between the shield 15 and the GND 18, so that the impedance generated in the wireless transmission circuit 13 can be maintained at the predetermined impedance. The radio wave signal having a carrier level equal to or higher than a predetermined level can be transmitted to the cleaning toilet seat device 2 regardless of the usage form of the remote control device 1, thereby enabling stable and remote control of the function of the cleaning toilet seat device 2. it can.

(Description of control operation by control circuit)
Here, the control by the control circuit 19 will be described with reference to the flowchart shown in FIG.

  As shown in FIG. 9, when the power is turned on, the control circuit 19 first determines whether or not the operation button 7 has been operated by the user based on a signal input from the sensor circuit 20 (step S1). S1) When it is determined that the operation button 7 has been operated, the process proceeds to step S2, and when it is determined that the operation button 7 has not been operated, the process of step S1 is repeated to enter a standby state.

  In step S2, the control circuit 19 performs a process of initializing the value of the test signal transmission timer, and then outputs a control signal instructing generation of the test signal to the radio signal generation circuit 23 of the wireless transmission circuit 13. The radio signal generation circuit 23 generates a test signal and outputs the test signal to the transmission antenna, and performs a process of transmitting the test signal from the transmission antenna (step S3).

  The test signal transmission timer to be initialized here regulates the time during which the radio signal generation circuit 23 can continuously output the test signal, while the test signal transmission timer is measuring a predetermined time. The radio signal generation circuit 23 keeps outputting the test signal to the transmitting antenna.

  Here, the carrier level detection circuit 12 detects the carrier level of the test signal output from the radio signal generation circuit 23 to the transmission antenna, and outputs a signal indicating the detection result to the control circuit 19.

  Next, the control circuit 19 performs a process of receiving a signal indicating the carrier level of the test signal output from the carrier level detection circuit 12 (step S4), and then moves the process to step S5.

  In step S5, the control circuit 19 determines whether or not the carrier level received in step S4 is lower than a predetermined value (a standard value indicating a carrier level of a radio signal sufficient to be received by the cleaning toilet seat device 2). If it is determined that the carrier level is lower than the predetermined value, the process proceeds to step S6. If it is determined that the carrier level is higher than the predetermined value, the process proceeds to step S9.

  In step S <b> 9, the control circuit 19 performs a process of transmitting a control signal for generating a radio signal corresponding to the operation of the operation button 7 by the user to the radio signal generation circuit 23, thereby causing the cleaning toilet seat from the radio transmission circuit 13. A radio signal is transmitted to the apparatus 2, and then the process proceeds to step S.

  In step S6, the control circuit 19 transmits a switching signal to the relay 21, and then the process proceeds to step S7.

  Here, the relay 21 switches the connection state between the shield 15 and the GND 18 based on the switching signal. That is, if the shield 15 is connected to the GND 18, the connection is disconnected, and if the shield 15 is disconnected from the GND 18, the connection is made.

  In step S7, the control circuit 19 determines whether or not the time measurement by the test signal transmission timer initialized in step S2 has ended (timed out), and determines that the measurement by the test signal transmission timer has not timed out. If so, the process proceeds to step S3. If it is determined that the measurement by the test signal transmission timer has timed out, the process proceeds to step S8.

  In step S8, the control circuit 19 performs a process of displaying an error message on the display panel 9, and then ends the process.

(Second Embodiment)
Next, a second embodiment of the remote control device 1 according to the present invention will be described with reference to FIG. In addition to the remote control device 1 according to the first embodiment, the remote control device 1a according to the second embodiment is connected to the reception antenna 25 that receives a radio signal transmitted from the transmission antenna 24, and the reception antenna 25. And a radio wave receiving circuit 26. In the remote control device 1a shown in FIG. 10, the same components as those of the remote control device 1 shown in FIG. 6 are denoted by the same reference numerals, and the description thereof is omitted.

(Description of functional block diagram showing remote control device of second embodiment)
As shown in FIG. 10, the remote control device 1 a according to the second embodiment includes an operation button 7, a display panel 9, a sensor circuit 20, a control circuit 19, a wireless transmission circuit 13, a shield 15, and a relay 21. And a GND 18, a carrier level detection circuit 12, a receiving antenna 25, and a radio wave receiving circuit 26. In FIG. 10, reference numeral 23 denotes a radio wave signal generation circuit, and reference numeral 24 denotes a transmitting antenna.

  The radio wave receiving circuit 26 is a circuit that receives a test signal, which is a radio wave signal transmitted by the transmitting antenna 24, via the receiving antenna 25, and is configured to output the received test signal to the carrier level detection circuit 12. ing.

  The carrier level detection circuit 12 is configured to detect the carrier level of the test signal input from the radio wave reception circuit 26 and transmit a signal indicating the detection result to the control circuit 19.

As described above, in the remote control device 1a of the second embodiment, the radio wave signal output from the transmitting antenna 24, that is, the same radio wave signal that the cleaning toilet seat device 2 actually receives is received by the radio wave receiving circuit 26. Since the carrier level detection circuit 12 detects the carrier level of the radio signal, the carrier level of the radio signal can be detected more accurately.

  Since the control circuit 19 can perform relay switching control based on the accurate detection result input from the carrier level detection circuit 12, it can transmit the radio signal more stably to the flush toilet seat device 2. Can do.

It is a perspective view which shows the usage condition of a remote control device. It is a perspective view which shows the usage condition of a remote control device. It is a perspective view which shows a remote control device. It is a schematic diagram which shows the front side of a printed circuit board. It is a schematic diagram which shows the back side of a printed circuit board. It is a functional block diagram which shows the remote control device of 1st Embodiment. It is a cross-sectional schematic diagram which shows the impedance which arises in a radio | wireless transmission circuit. It is a cross-sectional schematic diagram which shows the impedance which arises in a radio | wireless transmission circuit. It is a flowchart which shows operation | movement of a control circuit. It is a functional block diagram which shows the remote control apparatus of 2nd Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Remote control device 2 Washing toilet seat device 3 Toilet booth 4 Wall surface 5 Steel plate 6 Vinyl chloride sheet 7 Operation button 8 Case 9 Display panel 10 Hanger 11 Printed circuit board 12 Carrier level detection circuit 13 Radio transmission circuit 14 Electronic circuit 15 Shield 16 Battery 17 Battery holder 18 GND
19 control circuit 20 sensor circuit 21 relay 22 power supply 23 radio wave signal generation circuit 24 transmitting antenna 25 receiving antenna 26 radio wave receiving circuit

Claims (8)

A remote control device that can be attached to and detached from the wall and has a wireless transmission circuit that transmits a radio signal, and controls the operation of the electronic device by transmitting the radio signal from the wireless transmission circuit to an electronic device to be controlled In
Impedance generating means for generating a predetermined impedance with the wireless transmission circuit by connecting to a ground potential;
A remote control device comprising switch means for switching between connection and disconnection of the impedance generation means and the ground potential.   The remote control device according to claim 1, wherein the impedance generating means is a foil made of a conductive member formed on a printed circuit board.   The predetermined impedance is determined between the steel plate and the wireless transmission circuit when the remote control device is attached to a wall surface in which a steel plate is provided and the connection between the impedance generating means and the ground potential is disconnected. The remote control device according to claim 1, wherein the remote control device is substantially equal to an impedance generated in the remote control. Carrier level detection means for detecting a carrier level of the radio signal;
2. A control means for controlling to switch the switch means so as to increase the carrier level when it is determined that the carrier level detected by the carrier level detection means is lower than a predetermined value. The remote control device according to any one of?   5. The remote control device according to claim 4, wherein the carrier level detection unit detects a carrier level of a radio wave signal input to a transmission antenna for transmitting a radio wave signal in the radio transmission circuit.   5. The radio wave receiving circuit for receiving a radio wave signal transmitted from the transmitting antenna, wherein the carrier level detecting means detects a carrier level of the radio wave signal received by the radio wave receiving circuit. Or the remote control device according to 5;   The remote control device according to claim 4, wherein the carrier level detection unit detects the carrier level every time the remote control device is operated by a user.   The carrier level detection means detects the carrier level based on a carrier level detection test signal output before the radio transmission circuit outputs a radio signal corresponding to the operation of the remote controller by the user. 8. The remote control device according to claim 7, wherein

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