JP2005334540A - Receiving device, power supply device and receiving system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To avoid malfunction of a receiving device for receiving radio signals with electric power fed from a power supply device as the driving power when a wire is broken while the receiving device is used. <P>SOLUTION: The receiving device 1 comprises a first connection terminal 10 electrically connected to a second connection terminal 19 in the power supply device 2 for inputting the driving power, a disconnection determining part 13 for determining whether there is a disconnection or not between the first connection terminal 10 and the second connection terminal 19, and a notification part 14 for giving a notice according to the result of determination by the disconnection determining part 13. The disconnection determining part 13 detects the potential of the first connection terminal 10 by a potential detection part 15 disposed inside, and determines whether there is the disconnection or not by determining whether the detected potential is at least a prescribed threshold or not by a determining part 16. A user of the receiving device 1 can detect the disconnection as the notice is given by the notification part 14 according to the result of determination. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a reception device that performs reception processing of a radio signal transmitted from a wireless transmission device based on drive power supplied from a power supply device, a power supply device that supplies power to a predetermined power drive device, and a power device. The present invention relates to a receiving system including a receiving device.

  In recent years, in the field of endoscopes, systems including a swallowable capsule endoscope have been proposed. This capsule endoscope is provided with an imaging function and a wireless communication function. The capsule endoscope is swallowed from the mouth of the subject for observation (examination) until it is spontaneously discharged until it is spontaneously discharged. It has the function of moving and capturing images sequentially.

  While moving inside the body cavity, image data captured inside the body by the capsule endoscope is sequentially transmitted to the outside by wireless communication and stored in a memory provided outside. By carrying a receiver having a wireless communication function and a memory function, the subject can freely act after swallowing the capsule endoscope and before being discharged. After the capsule endoscope is ejected, a doctor or a nurse can make a diagnosis by displaying an image of an organ on a display based on image data stored in a memory (see, for example, Patent Document 1). .)

  By the way, since the capsule endoscope continues to receive a radio signal for a long time until it is discharged out of the subject, the receiver needs to operate for a long time. Accordingly, a receiver used in a capsule endoscope system generally has a configuration in which driving power is supplied by a large-capacity external battery or the like. Specifically, in a conventional capsule endoscope system, an external battery formed separately from the receiver is prepared in advance, and when performing an inspection using the capsule endoscope, the receiver Is used with the external battery fixed.

Japanese Patent Laying-Open No. 2001-231186 (page 3, FIG. 1)

  However, when the receiver employs a configuration in which driving power is supplied by an external battery, there is a problem that it is difficult to detect disconnection of the electrical connection between the external battery and the receiver. Hereinafter, this problem will be described in detail.

  The operation of acquiring the in-subject image using the capsule endoscope is performed for a long time from when the capsule endoscope is introduced into the subject until it is ejected. Therefore, in the conventional capsule endoscope system, the captured image is not displayed in real time, but the image data is extracted from the received wireless signal, and the extracted image data is stored in a memory or the like. Then, after the capsule endoscope is ejected from the body, the image is displayed on a screen of a display device separately provided for the receiver, so that a doctor or the like collectively observes images regarding each part in the subject. Making it possible.

  Therefore, unlike an electronic device or the like that displays images in real time, even if a disconnection occurs between the receiver and the external battery, no change that can be recognized from the outside occurs in the receiver or the like. It is not easy for a patient, a surrounding doctor, a nurse, etc., to detect the stoppage of the receiver. For this reason, for example, when a disconnection occurs immediately after the introduction of the capsule endoscope, there is a possibility that the in-subject image cannot be acquired at all even though the examination is performed for a long time. There is sex.

  On the other hand, the conventional capsule endoscope system essentially includes a structure in which disconnection between the receiver and the external battery is likely to occur. That is, since the capsule endoscope system does not need to restrain the subject at the time of examination unlike the normal endoscopic examination, until the capsule endoscope is introduced into the body and discharged, The subject will act relatively freely. Therefore, when the subject moves freely, physical force is applied to the wiring that electrically connects the receiver and the external battery according to changes in posture, etc. There is a problem that the possibility of disconnection is higher than that of medical electronic devices. From the above, in a system using a capsule endoscope, it is very important to detect an early disconnection between a receiver and an external battery that supplies driving power to the receiver.

  The present invention has been made in view of the above, and in a power driving apparatus such as a receiving apparatus that receives a radio signal using power supplied from a power supply apparatus such as an external battery as driving power, power is supplied during use. It aims at realizing the technique which avoids the malfunction when a disconnection arises between apparatuses.

  In order to solve the above-described problems and achieve the object, a receiving apparatus according to claim 1 performs reception processing of a radio signal transmitted from a radio transmission apparatus based on driving power supplied from a power supply apparatus. In the apparatus, a connection means that is electrically connected to the power supply apparatus when in use, and a signal processing means that is driven based on the power supplied through the connection means and that performs a predetermined process on the received radio signal And a disconnection determination unit that determines whether or not there is a disconnection between the power supply device and the connection unit, and a notification unit that performs a predetermined notification according to a determination result of the disconnection determination unit. To do.

  According to the first aspect of the present invention, the connection means that is electrically connected to the power supply apparatus, the disconnection determination means that determines whether or not there is a disconnection between the power supply apparatus and the connection means, and the notification according to the determination result Therefore, even when the appearance of the receiving device does not change with the occurrence of disconnection, the user can detect the occurrence of disconnection.

  According to a second aspect of the present invention, in the above invention, the disconnection determination means includes a potential detection means for detecting the potential of the connection means, and the disconnection is determined based on the potential detected by the potential detection means. The presence or absence is determined.

  According to a third aspect of the present invention, there is provided a receiving apparatus according to the above invention, further comprising a reserve power supply unit that supplies power to the disconnection determination unit.

  According to a fourth aspect of the present invention, there is provided the power supply apparatus according to the above invention, wherein the notification unit performs notification only when the disconnection determination unit determines that a disconnection has occurred.

  According to a fifth aspect of the present invention, there is provided a power supply device that supplies power to a power drive device that is driven based on the supplied power, wherein the connection means that is electrically connected to the power drive device, and the connection Supply potential value input means for inputting the potential output to the power drive device via the means, and disconnection between the connection means and the power drive device based on the potential input from the supply potential value input means It is characterized by comprising: a disconnection determining means for determining presence / absence of an error; and a notification means for performing a predetermined notification according to a determination result of the disconnection determination means.

  According to the fifth aspect of the present invention, since the disconnection determination means and the notification means are provided in the power supply apparatus, a disconnection occurs between the power driving apparatus or the receiving apparatus and the power supply apparatus. In addition, it is possible to supply power to the disconnection determination unit and the notification unit in the same manner as before disconnection.

  According to a sixth aspect of the present invention, in the above invention, the power supply device further includes drive state input means for inputting a drive state of the power drive device from the power drive device, and the disconnection determining means is configured to supply the supply potential value. It is characterized in that it is determined whether or not there is a disconnection between the connection unit and the power driving device based on the potential input from the input unit and the driving state stored in the driving state input unit.

  According to a seventh aspect of the present invention, there is provided the power supply apparatus according to the above invention, wherein the driving state input means stores the input driving state over a predetermined period.

  The power supply apparatus according to claim 8 is characterized in that, in the above invention, the notification means performs notification only when the disconnection determination means determines that a disconnection has occurred.

  A receiving system according to claim 9 is a receiving system comprising: a receiving device that receives a radio signal transmitted from outside; and a power supply device that supplies driving power to the receiver. Is driven based on the first connection means that is electrically connected to the power supply device during use, and the power supplied via the first connection terminal, and performs a predetermined process on the received radio signal Signal processing means to perform, and supply potential value output means that is electrically connected to the first connection means and outputs the potential of the first connection means to the power supply device, the power supply device comprising: A second connection means electrically connected to the first connection means when the receiver is used, and the first connection means and the second connection means based on a potential output by the supply potential value output means. Disconnection between And determining disconnection determination means, characterized by comprising a notification means for performing a predetermined notification based on the determination result obtained by the disconnection determination means.

  In the receiving system according to claim 10, in the above invention, the receiving device detects and detects at least the switching means for controlling the driving state of the signal processing means and the content of the driving control by the power switch means. Drive state output means for outputting a result to the power supply device, wherein the disconnection determination means includes the potential output by the supply potential value output means and the drive control output by the drive state output means. The presence or absence of a disconnection is determined based on the content of.

  A receiving device according to the present invention performs a notification according to a determination result, a connection unit that is electrically connected to the power supply device, a disconnection determination unit that determines the presence or absence of a disconnection between the power supply device and the connection unit. Since the notification means is provided, there is an effect that the user can detect the occurrence of the disconnection even when the appearance of the receiving device does not change with the occurrence of the disconnection.

  In addition, since the power supply device and the reception system according to the present invention include the disconnection determination unit and the notification unit in the power supply device, a disconnection occurs between the power driving device or the reception device and the power supply device. Even if it is a case, there exists an effect that it is possible to supply electric power to the disconnection determination means and the notification means in the same manner as before disconnection.

  Hereinafter, a receiving apparatus and a receiving system which are the best mode for carrying out the present invention (hereinafter, simply referred to as “embodiment”) will be described. Note that the drawings are schematic, and it should be noted that the relationship between the thickness and width of each part, the ratio of the thickness of each part, and the like are different from the actual ones. Of course, the part from which the relationship and ratio of a mutual dimension differ is contained.

(Embodiment 1)
First, the receiving system according to the first embodiment will be described. FIG. 1 is a schematic diagram illustrating the configuration of the reception system according to the first embodiment. As illustrated in FIG. 1, the reception system according to the first exemplary embodiment includes a reception device 1, a power supply device 2 that supplies power to the reception device 1, and reception antennas 3 a to 3 h. .

  The receiving device 1 is for performing reception processing of a radio signal transmitted from the outside. Specifically, as illustrated in FIG. 1, the reception device 1 is received via the antenna selection unit 4 that selects any one of the reception antennas 3 a to 3 h and the reception antenna 3 selected by the antenna selection unit 4. A reception circuit 5 that performs predetermined processing such as demodulation on a radio signal and an information extraction circuit 6 that extracts necessary information from the signal processed by the reception circuit 5 are provided. The receiving device 1 also includes a control unit 7 that performs predetermined control regarding output of the extracted information, a storage unit 8 that stores the extracted information, and the intensity of the received radio signal that is output from the receiving circuit 5. And an A / D converter 9 for A / D converting an analog signal corresponding to the above. Furthermore, the receiving device 1 includes a first connection terminal 10 for electrically connecting to the power supply device 2 side, a standby power supply unit 11, a first connection terminal 10 and a standby power supply unit 11 as necessary. Switching, the power supply source for the receiving circuit 5 and the like, the disconnection determination unit 13 for detecting the presence or absence of disconnection between the first connection terminal 10 and the power supply device 2, and the detection result by the disconnection determination unit 13 Is provided to the user, and a power switch 17 that controls power supply from the switching unit 12 is provided. The power supply device 2 includes a storage battery 18 and a second connection terminal 19 that is electrically connected to the storage battery 18 and electrically connected to the first connection terminal 10 provided in the reception device 1 when the reception device 1 is used. Prepare.

  The antenna selection unit 4 is for selecting an antenna suitable for receiving a radio signal from among a plurality of reception antennas 3a to 3h. Specifically, the antenna selection unit 4 selects a predetermined reception antenna 3 based on the control of the control unit 7, and outputs a radio signal received via the selected reception antenna 3 to the reception circuit 5. It has a function.

  The receiving circuit 5 is for performing predetermined processing such as demodulation on the radio signal received via the selected receiving antenna 3. The receiving circuit 5 has a function of outputting an analog signal corresponding to the strength of the radio signal to the A / D converter 9.

  The information extraction circuit 6 is for extracting predetermined information from the signal that has been subjected to predetermined processing by the receiving circuit 5. For example, when a wireless signal received by the receiving device 1 is transmitted from an electronic device having an imaging function, the information extraction circuit 6 extracts image data from the signal output from the reception circuit 5. .

  The control unit 7 is for performing overall control including an antenna selection operation by the antenna selection unit 4. Specifically, the control unit 7 transfers the information output from the information extraction circuit 6 to the storage unit 8 for storage, and also outputs a digital signal (from the A / D conversion unit 9) corresponding to the reception intensity ( For example, the reception antenna 3 to be used is determined based on RSSI (Received Signal Strength Indicator), and the antenna selection unit 4 is instructed. Specifically, the control unit 7 instructs the antenna selection unit 4 to sequentially switch the reception antennas 3a to 3h, for example, before receiving a radio signal and extracting information, and each of the reception antennas 3a to 3h. A digital signal corresponding to the received intensity is acquired. Then, the reception strengths of the reception antennas 3a to 3h are compared, for example, the reception antenna having the highest reception strength is determined as the signal reception antenna, and the antenna selection unit 4 is selected so as to select the reception antenna 3 Give instructions. In addition, the control unit 7 has a function of instructing the notification unit 14 to make a notification according to the determination result output from the disconnection determination unit 13. It will be described later.

  The storage unit 8 is for storing the information extracted by the information extraction circuit 6. As a specific configuration of the storage unit 8, the storage unit 8 itself may store information by providing a memory or the like. However, in the first embodiment, the storage unit 8 is a portable recording device as described later. It has a function of writing information to the medium 28.

  The 1st connection terminal 10 functions as an example of the connection means in a claim, or a 1st connection means. The first connection terminal 10 is for introducing drive power output from the power supply apparatus 2 into the reception apparatus 1 by being electrically connected to a second connection terminal (described later) provided in the power supply apparatus 2. is there. In addition, as an electrical connection mode between the 1st connection terminal 10 and the 2nd connection terminal 19, it is good also as making it contact physically directly, and good also as connecting via predetermined wiring etc. .

  The standby power supply unit 11 is used to supply power as an alternative when a problem occurs in power supply from the power supply device 2 due to disconnection or the like. The standby power supply unit 11 stores, for example, power that can drive each component in the receiving device 1 for a certain period of time.

  The switching unit 12 is a first connection terminal that is connected to the power supply device 2 as a power supply source for each component included in the reception device 1 when the power supply from the power supply device 2 is hindered due to disconnection or the like. This is for switching from the 10 side to the standby power supply unit 11 side. FIG. 2 is a schematic diagram illustrating an example of the configuration of the switching unit 12. As shown in FIG. 2, the switching unit 12 includes diodes 21 and 22 whose anode side is electrically connected to the first connection terminal 10 and the standby power supply unit 11 and whose cathodes are electrically connected to each other. In addition, the anode side of the diodes 21 and 22 is configured to be electrically connected to each component of the receiving device 1 including the disconnection determination unit 13 and the notification unit 14. For simplicity, the electrical characteristics of the diodes 21 and 22 are the same.

  When the switching unit 12 as shown in FIG. 2 is used, the value V1 of the supply potential by the standby power supply unit 11 is set to a value lower than the supply potential V2 of the storage battery 18 provided in the power supply device 2 (V2> V1). Set it. By performing such potential adjustment in advance, while the electrical connection between the first connection terminal 10 and the second connection terminal 19 is maintained, the diode 22 is turned on to turn on the cathodes of the diodes 21 and 22. The potential V on the side becomes equal to the potential V2 of the storage battery 18. Therefore, in the diode 21, the potential V (= V2) is applied to the cathode side, and the potential V1 supplied from the standby power supply unit 11 is applied to the anode side. Therefore, based on the relationship (V1 <V2), a reverse voltage is applied between the cathode and the anode of the diode 22, and while the diode 22 is on, the standby power supply unit 11 and the receiver 1 are connected. The electrical connection between each component provided is cut off.

  On the other hand, when a disconnection occurs between the first connection terminal 10 and the second connection terminal 19, the supply potential V <b> 2 from the storage battery 18 is not supplied to the diode 21. Therefore, the potential on the cathode side of the diode 21 is, for example, 0, and a reverse potential is applied between the anode and cathode of the diode 21, and the electrical connection to each component in the receiving device 1 is cut off. The potential V of V is gradually lowered to a value lower than V2. On the other hand, since the potential V1 from the standby power supply unit 11 is still supplied to the anode side of the diode 22, the potential V on the cathode side of the diode 21 is (V ≦ V1−Vth: Vth is a diode). When the voltage drops to a value that satisfies the drive threshold voltage of 21), the diode 21 is turned on, and the standby power supply unit 11 and each component of the receiving device 1 are electrically connected. Power is supplied to each component.

  This configuration is adopted for the disconnection determination unit 13 that determines whether or not a disconnection has occurred between the first connection terminal 10 and the second connection terminal 19, regardless of whether or not a disconnection has occurred. This is because power is always supplied. Therefore, when power is supplied by the standby power supply unit 11, a configuration in which power is supplied only to the control unit 7, the disconnection determination unit 13, and the notification unit 14 may be employed.

  Next, the disconnection determination unit 13 will be described. The disconnection determination unit 13 is for determining whether or not a disconnection has occurred between the first connection terminal 10 and the second connection terminal 19. Specifically, as illustrated in FIG. 1, the disconnection determination unit 13 determines whether or not a disconnection has occurred based on the potential detection unit 15 that detects the potential of the first connection terminal 10 and the detection result of the potential detection unit 15. The determination unit 16 outputs a determination result to the control unit 7.

  The potential detector 15 is electrically connected to, for example, the first connection terminal 10, has a function of detecting the potential of the first connection terminal 10, and has a function of outputting the detection result to the determination unit 16. In FIG. 1, although it is illustrated that the potential of the first connection terminal 10 itself is detected, it is needless to say that the configuration is not limited thereto. Specifically, it goes without saying that it can function as the potential detection unit 15 as long as it can detect the potential of a component that is electrically connected to the second connection terminal 19 in a normal state.

  The determination unit 16 is for determining whether or not there is a disconnection between the first connection terminal 10 and the second connection terminal 19 based on the detected potential by the potential detection unit 15. Specifically, the determination unit 16 stores in advance a predetermined threshold value, for example, a value in the vicinity of 0 potential, as a threshold value, and determines whether or not there is a disconnection based on a comparison between the threshold value and the detected potential by the potential detection unit 15. It has a function to perform. That is, when the potential of the first connection terminal 10 is higher than a predetermined threshold, for example, when it substantially matches the potential supplied from the power supply device, the second connection terminal is connected to the first connection terminal 10 from the storage battery 18. 19, it is determined that power is being supplied via 19, and it is determined that no disconnection has occurred. On the other hand, when the detection potential by the potential detection unit 15 is a value lower than the threshold value, for example, 0 potential, the supply power output from the storage battery 18 does not reach the first connection terminal 10 and disconnection occurs. Judge that it is.

  The notification unit 14 is for notifying the user or the like of the presence or absence of disconnection according to the determination result of the disconnection determination unit 13. As a notification mode, for example, the notification unit 14 includes a light emitting element such as an LED, and the light emitting element may be turned on when a disconnection occurs, or a predetermined warning sound is generated by providing a speaker or the like. It is also good to do. In the following, the notification unit 14 performs different forms of notification depending on whether or not there is a disconnection. It is good also as a structure which performs notification.

  The power switch 17 is for defining the start and stop of the driving of the entire receiver 1. In other words, the power switch 17 is for defining whether or not the power supplied via the switching unit 12 is supplied to each component included in the receiving device 1. The power switch 17 turns on the power by turning on the power switch 17. The power output from the storage battery 18 or the standby power supply unit 11 provided in the supply device 2 is supplied to each component including the disconnection determination unit 13.

  Next, an in-vivo information acquiring system configured using the receiving system according to the first embodiment will be described. FIG. 3 is a schematic diagram showing an overall configuration of an in-vivo information acquiring system configured using a receiving system. As shown in FIG. 3, in the in-subject information acquisition system, the receiving device 1 and the power supply device 2 are used in a state attached to the subject 25, and the receiving antennas 3 a to 3 h are placed on the body surface of the subject 25. They are used in a state where they are pasted at a predetermined distance from each other. In addition, in addition to these components, the intra-subject information acquisition system captures images using a capsule endoscope 26 that is an example of an intra-subject introduction apparatus that is introduced into the subject 25, and the capsule endoscope 26. A display device 27 for displaying the image in the subject 25 and a portable recording medium 28 for transferring information between the receiving device 1 and the display device 27.

  The capsule endoscope 26 functions as an intra-subject introduction device that is introduced into the subject 25. The capsule endoscope 26 includes, for example, a predetermined function execution unit such as an image sensor that images the inside of the subject 25, and also includes a wireless transmission unit that transmits information regarding the subject 25 acquired by the predetermined function execution unit to the outside. Have a configuration.

  The display device 27 is for displaying an image or the like in the subject 25 acquired by the capsule endoscope 26, and performs image display based on data supplied via the portable recording medium 28. It has a configuration such as a workstation. Specifically, the display device 27 may be configured to directly display an image using a CRT display, a liquid crystal display, or the like, or may be configured to output an image to another medium such as a printer.

  The portable recording medium 28 is detachable from the receiving device 1 and the display device 27, and has a structure capable of outputting and recording information when attached to both. Specifically, the portable recording medium 28 is attached to the receiving device 1 while the capsule endoscope 26 is moving in the body cavity of the subject 25, and information on the position of the capsule endoscope 26 is displayed. Record. Specifically, it is attached to the storage unit 8 provided in the receiving device 1 and information is acquired via the storage unit 8. The portable recording medium 28 is configured such that after the capsule endoscope 26 is ejected from the subject 25, the portable recording medium 28 is taken out from the receiving device 1 and attached to the display device 27, and the recorded data is read by the display device 27. Have. When data is transferred between the receiving device 1 and the display device 27 using a portable recording medium 28 such as a compact flash (registered trademark) memory, and the receiving device 1 and the display device 27 are connected by wire. Unlike the capsule endoscope 26, the subject 25 can freely move even when the capsule endoscope 26 is moving inside the subject 25.

  The operation of the in-vivo information acquiring system shown in FIG. 3 will be briefly described. As shown in FIG. 3, the capsule endoscope 26, which is one aspect of the in-subject introduction apparatus, is introduced into the subject 25 through the mouth of the subject 25. After being introduced into the subject 25, the capsule endoscope 26 sequentially moves from the oral cavity to the esophagus, stomach, small intestine, and large intestine, and thus acquires image data of each part in the subject 25 as it moves. A wireless signal is generated based on the acquired image data, and the generated wireless signal is transmitted to the outside of the subject 25.

  The transmitted radio signal is received via any one of the reception antennas 3 a to 3 h connected to the reception device 1. Then, data relating to the in-vivo image is extracted from the radio signal received by the receiving circuit 5 and the information extracting circuit 6 provided in the receiving apparatus 1 and recorded on the portable recording medium 28 via the storage unit 8.

  The above-described operation by the receiving apparatus 1 is repeated until the capsule endoscope 26 is discharged out of the subject 25. After the capsule endoscope 26 is ejected from the subject 25, the portable recording medium 28 is detached from the receiving device 1 and attached to the display device 27. As a result of the reception device 1 repeatedly performing the above operation, the portable recording medium 28 stores image data of an area through which the capsule endoscope 26 has passed. Therefore, the display device 27 visually displays the in-vivo image of the subject 25 by reading the image data recorded on the portable recording medium 28. This completes the operation of the in-vivo information acquisition system.

  Next, the operation for determining whether or not a disconnection has occurred on the receiving device 1 side will be described. FIG. 4 is a flowchart for explaining an operation for determining whether or not a disconnection has occurred. Hereinafter, the operation will be described with reference to FIG.

  First, the power switch 17 is turned on (step S101), and driving of the components in the receiving apparatus 1 including the disconnection determination unit 13 is started. Then, the disconnection determination unit 13 determines whether or not a disconnection has occurred between the first connection terminal 10 and the second connection terminal 19 (step S102). Specifically, the disconnection determination unit 13 detects the potential of the first connection terminal 10 by the potential detection unit 15 and determines the presence or absence of disconnection by comparing the detection result with a predetermined threshold value by the determination unit 16. .

  If it is determined that a disconnection has occurred (step S102, Yes), the notification unit 14 performs a predetermined notification indicating the occurrence of the disconnection based on an instruction from the control unit 7 (step S103). On the other hand, when it is determined that no disconnection has occurred (No in step S102), the notification unit 14 has no particular abnormality in the electrical connection between the first connection terminal 10 and the second connection terminal 19. A notification to that effect is made (step S104). In addition, when it is determined that no disconnection has occurred, it means that no abnormality has occurred. Therefore, in step S104, no particular notification is made, and only when a disconnection has occurred (step S102, Yes). It is good also as making a notice.

  Next, advantages of the receiving system according to the first embodiment will be described. The reception system according to the first exemplary embodiment includes a disconnection determination unit 13 that determines whether or not a disconnection occurs between the reception device 1 and the power supply device 2, and a notification that performs notification according to the determination result of the disconnection determination unit 13. By providing the unit 14, it is possible for the user to recognize the occurrence of the disconnection even when the disconnection occurs during use, and confirming the connection between the receiving device 1 and the power supply device 2. Etc. can be performed.

  For example, when the receiving system according to the first embodiment is used in the in-subject information acquisition system shown in FIG. 3, the first connection terminal 10 and the second connection due to the change in the posture of the subject 25, movement, and the like. There is a risk of disconnection between the connection terminal 19 and the connection terminal 19. Even in such a case, in the receiving system according to the first exemplary embodiment, the disconnection determination unit 13 immediately detects disconnection, and the notification unit 14 performs predetermined notification. By such notification, the user of the receiving system can immediately know that the disconnection has occurred, and can take appropriate measures such as reconnecting the first connection terminal 10 and the second connection terminal 19. It has the advantage of being.

(Embodiment 2)
Next, a receiving system according to the second exemplary embodiment will be described. The receiving system according to the second exemplary embodiment has a configuration in which the basic configuration is the same as that of the first exemplary embodiment, but a disconnection determination unit is provided in the power supply apparatus. FIG. 5 is a schematic diagram illustrating an overall configuration of a receiving system according to the second embodiment. In the second embodiment, components having the same reference numerals and names as those in the first embodiment have the same configurations and functions as those in the first embodiment unless otherwise specified.

  As illustrated in FIG. 5, the reception system according to the second embodiment is formed by a reception device 31, a power supply device 32, and reception antennas 3a to 3h. The receiving device 31 functions as an example of the power driving device in the claims, and similarly to the receiving device 1 in the first embodiment, the antenna selecting unit 4, the receiving circuit 5, the information extracting circuit 6, and the control unit. 7, a storage unit 8, an A / D conversion unit 9, a first connection terminal 10 and a power switch 17, and a supply potential value output unit 33 newly electrically connected to the first connection terminal 10, and a driving state And an output unit 34.

  The supply potential value output unit 33 is for outputting the potential of the first connection terminal 10 to the power supply device 32 for detection of disconnection performed in the power supply device 32. Specifically, the supply potential value output unit 33 is electrically connected to the first connection terminal 10 and has a function of outputting the potential of the first connection terminal 10 to the power supply device 32 side.

  The driving state output unit 34 is for outputting information on whether or not the receiving device 31 is driven to the power supply device 32. Specifically, the drive state output unit 34 is connected to the power switch 17 and is used to output information about on / off of the power switch 17 to the power supply device 32. The driving state output unit 34 may be configured to always output information regarding the on / off state of the power switch 17, but in the second embodiment, the information is only displayed when the power switch 17 is switched on / off. Is output.

  On the other hand, the power supply device 32 includes the storage battery 18 and the second connection terminal 19 as in the first embodiment, and supplies a supply potential value input unit 35 that is electrically connected to the supply potential value output unit 33 during use. A disconnection determination unit 36 electrically connected to the potential value input unit 35 is provided. In addition, the power supply device 32 inputs information related to the driving state output by the driving state output unit 34 and stores a predetermined notification based on the driving state input unit 37 that stores the information and the determination result obtained by the disconnection determination unit 36. And a notification unit 38 for performing

  The supply potential value input unit 35 inputs the potential of the first connection terminal 10 output from the supply potential value output unit 33 provided in the receiving device 31, and outputs the input potential to the disconnection determination unit 36. Is. In the second embodiment, the supply potential value input unit 35 is maintained at a potential substantially equal to the first connection terminal 10 via the supply potential value output unit 33 electrically connected to the first connection terminal 10. Thus, a specific value of the potential of the first connection terminal 10 is detected by detecting the potential of the supply potential value input unit 35.

  The disconnection determination unit 36 is for determining whether or not there is a disconnection related to power supply between the power supply device 32 and the reception device 31. Specifically, the disconnection determination unit 36 includes a potential detection unit 39 that detects the potential of the supply potential value input unit 35, and a determination unit 40 that determines whether there is a disconnection based on the potential detected by the potential detection unit 39. Is provided. In addition, the disconnection determination unit 36 according to the second embodiment has a configuration for inputting the drive information of the receiving device 31 stored in the drive state input unit 37, and performs disconnection determination using the input drive information. Yes. The specific operation of the disconnection determination unit 36 will be described in detail later.

  The drive state input unit 37 stores information regarding the drive state of the receiving device 31 output from the drive state output unit 34, and outputs the stored information to the disconnection determination unit 36 as necessary. . Specifically, the drive state input unit 37 has a function of storing information output from the drive state output unit 34 as needed, and whether or not the receiving device 31 is currently driven with respect to the disconnection determination unit 36. A function of outputting such information.

  The notification unit 38 is for performing a predetermined notification based on the determination result obtained by the disconnection determination unit 36. Specifically, the notification unit 38 has a function of performing a notification in a different mode when a disconnection occurs and when it does not occur. Have. As a specific notification mode, sound may be used as in the first embodiment, or lighting may be used. Moreover, it is good also as notifying especially when a disconnection does not generate | occur | produce but only when a disconnection occurs.

  Next, an operation for detecting whether or not a disconnection has occurred in the receiving system according to the second embodiment will be described. FIG. 6 is a flowchart illustrating a detection operation for the presence or absence of occurrence of disconnection on the power supply device 32 side in the receiving system according to the second embodiment. Hereinafter, the detection operation will be described with reference to FIG.

  First, the potential of the first connection terminal 10 is detected (step S201). Specifically, the potential of the supply potential value input unit 35 electrically connected to the first connection terminal 10 is detected by the potential detection unit 39 provided in the disconnection determination unit 36. Then, the determination unit 40 compares the detected potential with a predetermined threshold value, and determines whether the potential is a value equal to or higher than the threshold value (step S202). If the potential is equal to or greater than the threshold value (Yes at Step S202), the operation at Step S202 is repeated.

  If the potential is less than the threshold value (No at Step S202), it is determined whether or not the receiving device 31 is driven (Step S203). Specifically, the determination unit 40 determines whether or not the receiving device 31 is driven based on information stored in the drive state input unit 37. When it is determined that the receiving device 31 is driven (step S203, Yes), a notification that a disconnection has occurred is made (step S204), and when it is determined that the receiving device 31 is not driven. (Step S203, No), a notification that no disconnection has occurred is made (step S205). This completes the disconnection detection operation.

  The determination of whether or not the receiving device 31 is driven in step S204 is based on the following reason. In other words, since the receiving system according to the second embodiment has a configuration in which the power supply device 32 includes the disconnection determination unit 36, the driving of the reception device 31 and the driving of the disconnection determination unit 36 are controlled separately and independently. Thus, it is assumed that the disconnection determination unit 36 is driven even when the receiving device 31 is in the off state. Therefore, when it is decided not to determine whether or not the receiving device 31 is driven, for example, the power supply device 32 is not connected to the receiving device 31, that is, the first connection terminal 10 and the second connection terminal 19 in the first place. It is determined that a disconnection has occurred even when the is not connected.

  Specifically, for example, even when the receiving device 31 is not in use and the power supply device 32 is stored in a state where it is separated from the receiving device 31, the disconnection determination unit 36 is disconnected. There is a problem that the notification unit 38 makes a predetermined notification. For this reason, in this Embodiment 2, while determining the conduction | electrical_connection state between the 1st connection terminal 10 and the 2nd connection terminal 19, taking into account the drive state of the receiver 31 and determining the presence or absence of a disconnection Yes.

  Next, advantages of the receiving system according to the second embodiment will be described. First, the receiving system according to the second embodiment includes a disconnection determination unit 36 that determines the presence or absence of a disconnection, and a notification unit 38 that notifies the determination result, so that the user can generate a disconnection as in the first embodiment. Can be detected immediately.

  Further, the reception system according to the second embodiment employs a configuration in which the disconnection determination unit 36, the notification unit 38, and the like are provided in the power supply device 32, not in the reception device 31. Accordingly, the disconnection determination unit 36 and the like for detecting disconnection can be driven based on the power supplied from the storage battery 18, and it is necessary to provide a spare power source for driving the disconnection determination unit 36 and the like even when a disconnection occurs. Has the advantage of not. That is, since the disconnection occurs between the power supply device 32 and the reception device 31, the power from the storage battery 18 is still supplied to each component provided in the power supply device 32 even when the disconnection occurs. Thus, it becomes possible to detect disconnection. Therefore, the second embodiment enjoys the advantage that it is not necessary to provide a standby power source or the like used when disconnection occurs.

  Furthermore, the receiving system according to the second embodiment has an advantage that the driving state input unit 37 stores information on the driving state of the receiving device 31 over a predetermined period. That is, when a disconnection occurs between the first connection terminal 10 and the second connection terminal 19, the power supply to the receiving device 31 is stopped, so the function of the drive state output unit 34 is also stopped. There is a possibility that information regarding the driving state may not be output. On the other hand, the drive state input unit 37 has a function of holding the information on the drive state that has already been input for a predetermined period, so that even if the drive state output unit 34 is stopped when a disconnection occurs, the presence or absence of disconnection is detected. This has the advantage that it can prevent the judgment from being hindered.

  As described above, the present invention has been described using the first and second embodiments. However, the present invention is not necessarily limited to the above-described embodiments, and those skilled in the art have conceived various examples and modifications. Is possible. For example, the receiving system according to the first and second embodiments is assumed to be applied to an in-vivo information acquiring system using a capsule endoscope as shown in FIG. The application need not be limited to such fields. The receiving device and the receiving system according to the present invention can be applied to communication in general, and particularly exhibit a remarkable effect with respect to a device that hardly changes in appearance when a disconnection occurs between the receiving device and the power supply device. To do. In addition, the power supply device 32 in the second embodiment does not need to limit the power supply destination to the receiving device, and may be used for any power drive device.

1 is a block diagram showing a configuration of a receiving system according to a first exemplary embodiment. It is a block diagram which shows the structure of the switch part with which a receiver is equipped. It is a schematic diagram which shows the whole structure of the in-vivo information acquisition system to which a receiving system is applied. It is a flowchart for demonstrating the determination operation | movement of the presence or absence of disconnection generation | occurrence | production. FIG. 3 is a block diagram showing a configuration of a receiving system according to a second exemplary embodiment. It is a flowchart for demonstrating the determination operation | movement of the presence or absence of disconnection generation | occurrence | production.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Reception apparatus 2 Power supply apparatus 3a-3h Reception antenna 4 Antenna selection part 5 Reception circuit 6 Information extraction circuit 7 Control part 8 Memory | storage part 9 A / D conversion part 10 Connection terminal 11 Reserve power supply part 12 Switching part 13 Disconnection determination part DESCRIPTION OF SYMBOLS 14 Notification part 15 Potential detection part 16 Judgment part 17 Power switch 18 Storage battery 19 Connection terminal 21, 22 Diode 25 Test object 26 Capsule endoscope 27 Display apparatus 28 Portable recording medium 31 Reception apparatus 32 Power supply apparatus 33 Supply potential value Output unit 34 Drive state output unit 35 Supply potential value input unit 36 Disconnection determination unit 37 Drive state input unit 38 Notification unit 39 Potential detection unit 40 Determination unit

Claims (10)

In a receiving device that performs reception processing of a wireless signal transmitted from a wireless transmitting device based on driving power supplied from a power supply device,
Connection means for electrically connecting to the power supply device when in use;
A signal processing unit that drives based on the power supplied through the connection unit and performs predetermined processing on the received radio signal;
Disconnection determination means for determining the presence or absence of disconnection between the power supply device and the connection means;
Notification means for performing predetermined notification according to the determination result of the disconnection determination means;
A receiving apparatus comprising:   The reception according to claim 1, wherein the disconnection determination unit includes a potential detection unit that detects a potential of the connection unit, and determines whether or not there is a disconnection based on a potential detected by the potential detection unit. apparatus.   3. The apparatus according to claim 1, further comprising a reserve power supply unit configured to supply drive power to the disconnection determination unit while the connection unit and the power supply apparatus are disconnected. The receiving device described.   The receiving device according to any one of claims 1 to 3, wherein the notification unit performs notification only when the disconnection determination unit determines that a disconnection has occurred. In a power supply device that supplies power to a power drive device that is driven based on supply power,
Connecting means for electrically connecting to the power driving device;
Supply potential value input means for inputting the potential output to the power driving device via the connection means;
Disconnection determination means for determining the presence or absence of disconnection between the connection means and the power driving device based on the potential input from the supply potential value input means;
Notification means for performing predetermined notification according to the determination result of the disconnection determination means;
A power supply device comprising: Drive state input means for inputting the drive state of the power drive device from the power drive device;
The disconnection determination means determines whether or not there is a disconnection between the connection means and the power driving device based on the potential input from the supply potential value input means and the drive state stored in the drive state input means. The power supply apparatus according to claim 5, wherein the determination is performed.   The power supply apparatus according to claim 6, wherein the drive state input unit stores the input drive state over a predetermined period.   The power supply apparatus according to any one of claims 5 to 7, wherein the notification unit performs notification only when the disconnection determination unit determines that a disconnection has occurred. In a receiving system including a receiving device that receives a radio signal transmitted from the outside, and a power supply device that supplies driving power to the receiver,
The receiving device is:
First connection means for electrically connecting to the power supply device in use;
Signal processing means for driving based on the power supplied via the first connection terminal and performing predetermined processing on the received radio signal;
Supply potential value output means that is electrically connected to the first connection means and outputs the potential of the first connection means to the power supply device;
With
The power supply device
Second connection means for electrically connecting to the first connection means during use of the receiver;
Disconnection determination means for determining the presence or absence of disconnection between the first connection means and the second connection means based on the potential output by the supply potential value output means;
Notification means for performing a predetermined notification based on the determination result obtained by the disconnection determination means;
A receiving system comprising: The receiving device is:
Switch means for controlling at least the driving state of the signal processing means;
Drive state output means for detecting the content of drive control by the power switch means and outputting the detection result to the power supply device;
Further comprising
The disconnection determining means determines whether or not there is a disconnection based on the potential output by the supply potential value output means and the content of drive control output by the drive state output means. The receiving system described in.

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