WO2012067171A1 - 移動型x線装置 - Google Patents
移動型x線装置 Download PDFInfo
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- WO2012067171A1 WO2012067171A1 PCT/JP2011/076473 JP2011076473W WO2012067171A1 WO 2012067171 A1 WO2012067171 A1 WO 2012067171A1 JP 2011076473 W JP2011076473 W JP 2011076473W WO 2012067171 A1 WO2012067171 A1 WO 2012067171A1
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- Prior art keywords
- unit
- battery
- mobile
- power supply
- external power
- Prior art date
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- 238000003384 imaging method Methods 0.000 claims description 24
- 238000006243 chemical reaction Methods 0.000 claims description 15
- 238000004891 communication Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 13
- KJQOYUHYAZGPIZ-PIJHVLQJSA-N conotoxin vc1.1 Chemical compound C([C@H]1C(=O)N2CCC[C@H]2C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@H](C(N[C@@H](CSSC[C@@H]2NC(=O)[C@@H](NC(=O)CN)CSSC[C@H](NC(=O)[C@H](CCCNC(N)=N)NC(=O)[C@@H]3CCCN3C(=O)[C@H](CC(O)=O)NC(=O)[C@H](CO)NC2=O)C(=O)N[C@@H](CC(N)=O)C(=O)N[C@@H](CC=2C=CC(O)=CC=2)C(=O)N[C@@H](CC(O)=O)C(=O)N1)C(N)=O)=O)[C@@H](C)CC)C1=CN=CN1 KJQOYUHYAZGPIZ-PIJHVLQJSA-N 0.000 description 3
- 238000012790 confirmation Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05G—X-RAY TECHNIQUE
- H05G1/00—X-ray apparatus involving X-ray tubes; Circuits therefor
- H05G1/08—Electrical details
- H05G1/10—Power supply arrangements for feeding the X-ray tube
- H05G1/12—Power supply arrangements for feeding the X-ray tube with dc or rectified single-phase ac or double-phase
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/44—Constructional features of apparatus for radiation diagnosis
- A61B6/4405—Constructional features of apparatus for radiation diagnosis the apparatus being movable or portable, e.g. handheld or mounted on a trolley
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/56—Details of data transmission or power supply, e.g. use of slip rings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05G—X-RAY TECHNIQUE
- H05G1/00—X-ray apparatus involving X-ray tubes; Circuits therefor
- H05G1/08—Electrical details
- H05G1/10—Power supply arrangements for feeding the X-ray tube
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
- H02J2310/10—The network having a local or delimited stationary reach
- H02J2310/20—The network being internal to a load
- H02J2310/23—The load being a medical device, a medical implant, or a life supporting device
Definitions
- the present invention relates to a mobile X-ray apparatus, and more particularly to a charging technique.
- Patent Document 1 discloses a mobile X-ray imaging apparatus that can check imaging contents and perform image processing while charging a battery. In order to cope with intermittent contact of the power plug when the power plug is inserted and removed, a predetermined X-ray imaging apparatus is used. A mobile X-ray imaging apparatus that switches between commercial AC power supply driving and battery driving after a time lag has been disclosed is disclosed.
- an instantaneous voltage drop or instantaneous interruption may occur in a commercial AC power supply.
- the unit installed in the mobile X-ray apparatus The voltage supplied to the image reading device that reads out the latent image stored on the imaging plate, the input settings for shooting conditions, and the control unit that controls the display of images read by the image reading device, etc. is below the specified value. There was a problem that the operation became unstable.
- the present invention has been made in view of the above problem, and even when a sudden voltage drop or a momentary power failure occurs during driving of a commercial AC power supply, the voltage supplied to the unit does not become a specified value or less and operates stably.
- An object is to provide a mobile X-ray apparatus capable of performing the above.
- a mobile X-ray device includes an external power supply connection unit for connection to an external power supply, a battery charged using an external power supply through the external power supply connection unit, A mobile X-ray device having a unit powered by an external power supply and operating via an external power supply connection unit, and is provided between the external power supply connection unit and the unit and includes a first rectifier A first circuit configured between the battery and the unit and configured to include a second rectifier, the unit being connected to the unit from the external power source via the first circuit When the supplied voltage becomes lower than the output voltage of the battery, the unit is supplied with power from the battery via the second circuit.
- the mobile type that can stably operate without the voltage supplied to the unit being less than the specified value.
- An X-ray device can be provided. Further, since the unit can be used during charging, shooting preparation and image reading operation can be performed without worrying about the remaining battery level.
- Schematic diagram showing the overall configuration of the mobile X-ray apparatus according to the present embodiment 1 is a block diagram showing an internal configuration of a mobile X-ray apparatus according to a first embodiment
- the block diagram which shows the internal structure in charge and AC drive mode of the mobile X-ray apparatus which concerns on 1st Embodiment 1 is a block diagram showing an internal configuration in a battery drive mode (all functions) of a mobile X-ray apparatus according to a first embodiment.
- Block diagram showing an internal configuration of a mobile X-ray apparatus according to a second embodiment ON / OFF of each mode of the mobile X-ray apparatus according to the second embodiment and the second switch 41 and the third switch a61, the third switch b62, the third switch c63, the key switch (operated from the mode selection unit 51), And explanatory diagram showing the correspondence of connection / disconnection of commercial power supply (plug)
- the mobile X-ray apparatus of the present invention is capable of performing stable operation even when a sudden voltage drop or a momentary power failure occurs while driving a commercial AC power supply, and the voltage supplied to the unit does not fall below a specified value.
- An external power supply connection for connecting to an external power supply, a battery charged using the external power supply via the external power supply connection, and a power supply using the external power supply via the external power supply connection
- a first circuit configured to include a first rectifier installed between the external power supply connection unit and the unit, and installed between the battery and the unit.
- a second circuit configured to include a second rectifier, and the voltage supplied to the unit from the external power source through the first circuit is lower than the output voltage of the battery. Before the battery Through the second circuit, characterized in that power the unit.
- one end of the first circuit is connected between the external power supply connection unit and a battery, and the other end of the first circuit is connected to the unit.
- the external power source is a commercial AC power source, and the external power source connection unit is connected to a voltage conversion unit that converts an AC voltage output from the commercial AC power source into a predetermined AC voltage. Is connected to an AC-DC converter that converts an alternating current output from the voltage converter into a direct current, and the AC-DC converter uses a direct current output from the AC-DC converter.
- a battery charger for charging the battery is connected, and the battery charger is connected to the battery, and one end of the first circuit is connected to the output side of the AC-DC converter, The other end of the first circuit is connected to the unit.
- the first rectifier is a first diode
- the second rectifier is a second diode
- an anode side of the first diode is connected to an output side of the AC-DC converter 22
- the cathode side of the first diode is connected to the unit
- the anode side of the second diode is connected to the battery side
- the cathode side of the second diode is connected to the first diode. It is connected to the cathode side.
- the unit is configured by using at least one unit unit that realizes a predetermined function, and the mobile X-ray apparatus selects the unit unit to be driven by at least one of the external power source and the battery. It comprises a selection means.
- the unit unit includes a unit voltage conversion unit for converting into a voltage corresponding to the unit unit.
- the unit unit is at least one of an image reading apparatus that reads an image signal from an imaging plate, an operation unit that performs input setting of imaging conditions, or a communication unit that can be connected to an external network.
- the battery when charging the battery using the external power supply, the battery has stop means for stopping power supply to the unit using the external power supply, and the stop means includes the cathode side of the first diode and the second diode. It is characterized by comprising a switch installed between the connection point of the diode to the cathode side and the unit.
- the mobile type that can stably operate without the voltage supplied to the unit being less than the specified value.
- An X-ray device can be provided.
- FIG. 1 is a schematic diagram showing an overall configuration of a mobile X-ray apparatus according to the present embodiment.
- a mobile X-ray apparatus 10 includes a main body 1 and a carriage 4 that moves with the main body 1 mounted thereon.
- the main body 1 is fixed on the carriage 4.
- wheels 8 that are driven by a motor are provided.
- a support column 6 is erected on the front portion of the carriage 4 so as to be rotatable.
- the support 6 is provided with an arm 5 that moves up and down along the support 6.
- the tip of the arm 5 is provided with an X-ray generator 2 that generates X-rays under the control of the main body 1 and an X-ray movable diaphragm 3 that adjusts the X-ray irradiation field.
- the main body 1 includes an X-ray generator 2 and an operation panel (not shown).
- the X-ray movable diaphragm 3 is rotatably mounted immediately below the X-ray generation unit 2 and is slidably supported on the support column 6 via the arm 5 together with the X-ray generation unit 2.
- the X-ray generation unit 2 and the X-ray movable diaphragm 3 are moved to predetermined positions at the time of photographing due to the rotation of the support 6, the elevation along the support 6, and the extension and contraction of the arm 5.
- the X-ray detector 7 is installed so as to face the X-ray generator 2 at the time of X-ray imaging, detects X-rays transmitted through the subject 9, and accumulates transmitted X-ray signals as latent images.
- An imaging plate, an FPD (Flat Panel Detector) in which a plurality of detection elements are arranged in a two-dimensional array, and a film are used.
- FIG. 2 is a block diagram showing an internal configuration of the mobile X-ray apparatus according to the first embodiment.
- the mobile X-ray apparatus 10a has a plug 20 that is an external power supply connecting part for connecting to a commercial AC power supply 100 that is an external power supply, and an AC voltage output from the commercial AC power supply 100 is a predetermined value.
- a plug 20 that is an external power supply connecting part for connecting to a commercial AC power supply 100 that is an external power supply
- an AC voltage output from the commercial AC power supply 100 is a predetermined value.
- the voltage conversion unit 21 that converts to AC voltage the AC-DC conversion unit 22 that converts AC current output from the voltage conversion unit 21 to DC current, and the DC current output from the AC-DC conversion unit 22
- a contact point Pa is provided between the AC-DC converter 22 and the battery charger 23.
- the contact Pa and the unit 30 mounted on the main body 1 are electrically connected via the first rectifier 25 and the first switch 26.
- the first rectifier 25 is referred to as a first circuit 28.
- a part of the direct current converted by the AC-DC converter 22 is supplied to the unit 30 via the first circuit 28 and the first switch 26.
- the unit 30 is driven by a commercial AC power supply.
- an image reading device (hereinafter abbreviated as “CR”) 31 that reads out a latent image accumulated in the imaging plate, an input setting of photographing conditions, and an image read in CR Connect to a control unit (hereinafter abbreviated as “PC”) 32 that performs control for display and an external network such as a hospital LAN, and acquire information necessary for imaging, for example, order information indicating imaging conditions of the subject.
- PC control unit
- each unit of CR31, PC32, and HUB33 incorporates a unit voltage conversion unit for converting into a voltage corresponding to each unit.
- the unit When the unit operates with a direct current, it is configured with a DC-DC converter. When the unit operates with an alternating current, it is configured with a DC-AC converter.
- an FPD When an FPD is used as the X-ray detector 7, an image processing apparatus that generates an X-ray image of the subject based on an electric signal from the FPD may be used instead of the CR31.
- the battery 24 is electrically connected to the imaging control unit 40 that controls the operations of the X-ray generation unit 2 and the X-ray diaphragm 3 via the second switch 41. Further, the battery 24 is electrically connected via a second rectifier 27 at a contact Pb between the first circuit 28 and the first switch 26. In the present embodiment, the second rectifier 27 is referred to as a second circuit 29 in the present embodiment.
- the mobile X-ray apparatus includes a charging-only mode in which only charging is performed, and charging and AC in which the unit 30 is driven using the commercial AC power source 100 during charging (hereinafter referred to as “AC driving”).
- AC driving There are mainly four modes: a drive mode, a battery drive mode in which only battery drive is performed, and a stop mode. Further, the battery drive mode may be subdivided into a mode in which all functions are operated, a mode in which only the photographing control unit 40 is operated, and a mode in which only the unit of the main body unit 1 is operated. In the present embodiment, description will be made assuming that the battery drive mode is subdivided into the above three modes.
- the mobile X-ray apparatus 10 includes a mode selection unit 51 that selects each mode using a dial switch, a touch panel, a command switch (key switch), and the like provided in the main unit 1, and a mode selected according to the selected mode.
- a charge control unit 50 that transmits ON / OFF signals of the first switch 26 and the second switch 41, and controls the connection state to match the mode.
- the charge control unit 50 is connected between the voltage conversion unit 21, the first switch 26, the second switch 41, the mode selection unit 51, and the contact Pb and the first switch 26.
- the charging control unit 50 controls ON / OFF of the first switch 26 and the second switch 41 in accordance with the mode selected by the mode selection unit 51.
- FIG. 3 shows each mode of the mobile X-ray apparatus according to the first embodiment, the first switch 26 and the second switch 41, ON / OFF of the key switch (operated from the mode selection unit 51), and the commercial AC power source 100.
- 4 is an explanatory diagram showing a correspondence relationship between connection / disconnection of a plug 20.
- FIG. FIG. 4 is a block diagram showing an internal configuration of the mobile X-ray apparatus according to the first embodiment in the charge / AC drive mode.
- FIG. 5 is a block diagram showing an internal configuration in the battery drive mode (all functions) of the mobile X-ray apparatus according to the first embodiment.
- AC / DC conversion unit 22 performs AC / DC conversion from ACV 1 v to DCV 1 v (for example, DC 282 v). Then, a DC voltage of DCV 1 v is supplied to the battery charger 23, and charging of the battery 24 is started. In the charge-only mode, the direct current output from the AC-DC converter 22 is all used for charging, so that the time required for charging can be further shortened.
- DCV 2 v (for example, DC 200 v) lower than DCV 1 v is supplied from the battery 24, DCV 2 v is applied to the second circuit 29.
- the unit 30 While a stable current is being supplied from the commercial AC power supply 100V, the unit 30 is supplied with a DCV 1 V DC voltage via the first circuit and the first switch 26, and the unit 30 is supplied with AC power. To drive.
- the output from the AC-DC converter 22 stops or becomes less than 2 VDC instantaneously.
- a DCV 2 v DC voltage is supplied from the battery 24 to the unit 30 via the contact Pb.
- the unit 30 In other words, if the voltage from the commercial AC power supply 100 falls below the specified value (voltage DCV 2 v output from the battery 24) while the unit 30 is being driven by power supply from the commercial AC power supply 100 that is an external power supply, the unit 30 In contrast, power is supplied from the battery 24. In other words, power is supplied to the unit 30 from the higher potential due to the potential difference between the voltage output from the AC-DC converter 22 and the voltage output from the battery 24.
- Battery drive mode During a round-trip, the mobile X-ray apparatus is moved to the bedside of the subject, and various operations such as X-ray irradiation and image reading are performed by battery drive. Therefore, in the battery drive mode, a mode for operating all functions is often selected. Therefore, first, a mode in which all functions are operated in the battery drive mode will be described. If the key switch is turned ON when the plug 20 is not connected to the commercial AC power supply 100, the battery drive mode (all functions) is entered. As shown in FIG. 5, the first switch 26 and the second switch Both 41 are turned on (see “Battery Drive Mode (All Functions)” in FIG. 3).
- the X-ray generation unit 2 and the X-ray detector 7 are disposed opposite to each other with the subject 9 interposed therebetween, and a DC voltage (DCV 2 v) is applied from the battery 24 to the imaging control unit 40, and X-rays are irradiated. Is done. Further, the unit 30 is also supplied with DCV 2 v from the battery 24, operates the CR31, the PC32, and the HUB 33 as required, and reads and displays an image and receives order information.
- DCV 2 v DC voltage
- the mode selection unit 51 for example, ON / OFF of the key switch
- a selection function for each mode such as ⁇ battery drive mode (all functions) '', ⁇ battery drive mode (imaging control) '', ⁇ battery drive mode (unit) '', for example, only X-ray imaging “Battery drive mode (imaging control)” and “battery drive mode (unit)” for operating only the unit of the main body 1 can be selected.
- the charge control unit 50 turns off the first switch 26 and the second switch 41. Set to ON.
- the charge control unit 50 turns on the first switch 26 and turns on the second switch. 41 is switched to OFF (see “Battery Drive Mode (Shooting Control)” and “Battery Drive Mode (Unit)” in FIG. 3).
- each function of the unit 30 can be operated while the battery 24 is being charged by connecting the plug 20 to the commercial AC power supply 100.
- the mobile X-ray device is recharged after moving to the place where the mobile X-ray device is stored after the round, and the battery 24 is low when preparing for the next round. I often go in the case of.
- order information of the subject is acquired via the HUB 33, the imaging conditions are input from the operation unit by driving the PC 32, or the image is read by driving the CR 31. Therefore, it is possible to perform shooting preparation and image reading operation even during charging.
- the operation of the unit 30 is forcibly terminated by instantaneously supplying direct current from the battery 24 via the second circuit 29. It is possible to operate stably without being done. As a result, regardless of the power supply status of the commercial AC power supply 100, it is possible to suppress the occurrence of problems associated with the stable operation of the unit 30 and the sudden end of operation.
- the first switch 26 is used. However, even if the first switch 26 is not used and the unit 30 is directly connected from the contact Pb, the above-described stable operation can be achieved. In this case, however, the charging only mode, the battery driving mode (imaging control), and the stop mode are not set.
- FIG. 6 is a block diagram showing an internal configuration of the mobile X-ray apparatus according to the second embodiment.
- FIG. 7 illustrates each mode of the mobile X-ray apparatus according to the second embodiment and the second switch 41 and the third switch a61, the third switch b62, the third switch c63, and the key switch (operated from the mode selection unit 51). It is explanatory drawing which shows the correspondence with ON / OFF of ON / OFF and connection / disconnection of commercial power supply (plug).
- the difference between the mobile X-ray apparatus 10b according to the second embodiment and the mobile X-ray apparatus 10a according to the first embodiment is that, in the first embodiment, whether or not to drive in units of 30 units is selected.
- the function unit in the unit 30 is selected and driven.
- the unit units CR31, PC32, and HUB33 that realize predetermined functions are selected and driven.
- the mobile X-ray apparatus 10b replaces the first switch 26 of the mobile X-ray apparatus 10 according to the first embodiment with a unit unit CR31
- a third switch a61, a third switch b62, and a third switch c63 are provided as selection means for selecting a unit unit that turns on or off each of the PC32 and the HUB33. Then, by selecting the charging / AC driving mode or the battery driving mode in the mode selection unit 51 and further selecting the function to be driven, only the desired function can be AC driven during charging.
- this embodiment selects ON or OFF for each unit, CR31 / PC32 / HUB33, which realizes the function in the unit, for the part that has been selected ON / OFF for each unit in the first embodiment.
- the third switch a61, the third switch b62, and the third switch c63 are all turned on to operate all functions.
- the “battery drive (shooting control) mode” of the present embodiment is defined as a mode in which only the shooting control unit 20 is operated, in FIG. 7, the third switch a61, the third switch b62, and the third switch c63 are set to OFF. Although described, it may be configured to select and operate a function desired to operate together with the imaging control unit 20.
- the third switch a61, the third switch b62, and the third switch c63 in the “battery drive (shooting control) mode” of FIG. 7 can be rewritten to “ON / OFF”. Thereby, together with the imaging control unit 40, only a desired function in the unit can be selected and operated.
- the charging time in the charge / AC drive mode can be shortened, and the operation during the battery drive mode can be saved. Electricity can be achieved.
- the selection means it is possible to select the unit unit to be driven by at least one of the external power supply and the battery.
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Abstract
Description
まず、図1に基づいて、本実施形態に係る移動型X線装置の全体構成について説明する。図1は、本実施形態に係る移動型X線装置の全体構成を示す模式図である。
次に、図2に基づいて第1実施形態に係る移動型X線装置の内部構成について説明する。図2は、第1実施形態に係る移動型X線装置の内部構成を示すブロック図である。
キースイッチをOFFにし、プラグ20を商用交流電源100に接続すると、充電専用モードとなり、図3「充電専用モード」に示すように、第1スイッチ26、第2スイッチ41共にOFFとなる(図2は第1スイッチ26、第2スイッチ41共にOFFであり、この状態で、プラグ20を挿すと充電専用モードに移行する)。第1スイッチ26がOFFとなることにより、商用交流電源100からユニット30への給電は停止する。この充電専用モードでは、商用交流電源100から交流電圧(例えばAC100v)が給電され、電圧変換部21において、ACV1vに変換(例えばAC200vに昇圧)される。次いで、AC-DC変換部22において、ACV1vからDCV1v(例えばDC282v)に交流直流変換される。そして、DCV1vの直流電圧が、バッテリ充電器23に供給され、バッテリ24への充電が開始する。充電専用モードでは、AC-DC変換部22から出力される直流電流が全て充電に用いられるため、充電に要する時間をより短縮できる。
プラグ20を商用交流電源100に接続した状態で、キースイッチをONにする入力操作を行うと、充電兼AC駆動モードとなり、図4に示すように、第1スイッチ26はON、第2スイッチ41はOFFとなる(図3の「充電兼AC駆動モード」参照)。この充電兼AC駆動モードでは、商用交流電源100から交流電圧(例えばAC100v)が給電され、電圧変換部21においてACV1vに変換される。次いで、AC-DC変換部22においてDCV1v(例えばDC282v)に交流直流変換される。AC-DC変換部22から出力された直流電流の一部は、バッテリ充電器23へ送られてバッテリ24への充電が開始される。それと同時に、AC-DC変換部22から出力された直流電流の残りは、第1回路28へ送られる。よって、第1回路28には、DCV1vが印加される。第1スイッチ26を介してユニット30へDCV1vが印加される。
回診時には、移動型X線装置を被検体のベッドサイドに移動させ、バッテリ駆動によりX線の照射及び画像の読み取り等の諸動作を行う。そのため、バッテリ駆動モードでは、全機能を動作させるモードが選択されることが多い。よって、まずバッテリ駆動モードのうち、全機能を動作させるモードについて説明する。プラグ20が商用交流電源100に接続されていない状態で、キースイッチをONにする入力操作を行うと、バッテリ駆動モード(全機能)となり、図5に示すように第1スイッチ26及び第2スイッチ41が共にONとなる(図3の「バッテリ駆動モード(全機能)」参照)。この状態で、X線発生部2とX線検出器7とを被検体9を挟んで対向配置し、バッテリ24から撮影制御部40に直流電圧(DCV2v)が印加され、X線が照射される。更に、ユニット30も、バッテリ24からDCV2vが印加され、CR31、PC32、必要に応じてHUB33が動作し、画像の読出しや表示、またオーダ情報の受信が行われる。
プラグ20が商用交流電源100に接続されていない状態においてキースイッチをOFFにすると、充電制御部50は、第1スイッチ26、第2スイッチ41が共にOFFとし、完全に電源がOFFとなる。
通常、移動型X線装置の充電は、回診後に移動型X線装置を保管する場所に移動させた後、次の回診に備えて行ったり、回診前の準備時において、バッテリ24の残量不足の場合に行ったりすることが多い。これら充電中において、例えばHUB33を経由して被検体のオーダ情報を取得したり、PC32を駆動して操作ユニットから撮影条件の入力設定を行ったり、CR31を駆動して画像の読出しを行ったりすることができるので、充電中にも撮影準備や画像読取動作を行うことができる。
図6、7に基づいて、その他の実施形態について説明する。図6は、第2実施形態に係る移動型X線装置の内部構成を示すブロック図である。図7は、第2実施形態に係る移動型X線装置の各モードと第2スイッチ41及び第3スイッチa61、第3スイッチb62、第3スイッチc63、キースイッチ(モード選択部51から操作)のON/OFF、及び商用電源(プラグ)の接続/非接続のONまたはOFFとの対応関係を示す説明図である。
Claims (8)
- 外部電源に接続するための外部電源接続部と、前記外部電源接続部を介して前記外部電源を用いて充電されるバッテリと、前記外部電源接続部を介して前記外部電源を用いて給電されて動作するユニットと、を有する移動型X線装置において、
前記外部電源接続部と前記ユニットとの間に設置され、第1の整流器を備えて構成された第1回路と、前記バッテリと前記ユニットとの間に設置され、第2の整流器を備えて構成された第2回路と、を有し、
前記ユニットに対し、前記外部電源より前記第1回路を介して給電される電圧が前記バッテリの出力電圧より低くなった場合、前記バッテリより前記第2回路を介して前記ユニットに給電することを特徴とする移動型X線装置。 - 前記第1回路の一端は、前記外部電源接続部と、バッテリとの間に接続され、前記第1回路の他端は、前記ユニットに接続されていることを特徴とする請求項1に記載の移動型X線装置。
- 前記外部電源は商用交流電源であり、前記外部電源接続部には、前記商用交流電源から出力される交流電圧を所定の交流電圧に変換する電圧変換部が接続され、前記電圧変換部には、前記電圧変換部から出力される交流電流を直流電流に変換するAC-DC変換部が接続され、前記AC-DC変換部には、AC-DC変換部から出力される直流電流を用いて前記バッテリを充電するためのバッテリ充電器が接続され、前記バッテリ充電器には、前記バッテリが接続されると共に、
前記第1回路の一端は、前記AC-DC変換部の出力側に接続され、前記第1回路の他端は、前記ユニットに接続されていることを特徴とする請求項2に記載の移動型X線装置。 - 前記第1の整流器は第1のダイオードであり、前記第2の整流器は第2のダイオードであり、前記第1のダイオードのアノード側は、前記AC-DC変換部の出力側に接続され、前記第1のダイオードのカソード側は、前記ユニットに接続され、前記第2のダイオードのアノード側は、前記バッテリ側に接続され、前記第2のダイオードのカソード側は前記第1のダイオードのカソード側に接続されていることを特徴とする請求項3に記載の移動型X線装置。
- 前記ユニットは、所定の機能を実現する単位ユニットを少なくとも一つ以上用いて構成され、前記移動型X線装置は、前記外部電源又は前記バッテリの少なくとも一方により駆動させる前記単位ユニットを選択する選択手段を備えることを特徴とする請求項1に記載の移動型X線装置。
- 前記単位ユニットは、当該単位ユニットに応じた電圧に変換するためのユニット電圧変換部を備えることを特徴とする請求項5に記載の移動型X線装置。
- 前記単位ユニットは、イメージングプレートから画像信号を読み取る画像読取装置、撮影条件の入力設定を行う操作ユニット、又は外部ネットワークに接続可能な通信手段、のうちの少なくとも一つである、ことを特徴とする請求項5に記載の移動型X線装置。
- 前記外部電源を用いて前記バッテリを充電する際、前記外部電源を用いて前記ユニットに対する給電を停止する停止手段を有し、前記停止手段は前記第1のダイオードのカソード側と前記第2のダイオードのカソード側との接続点と、前記ユニットとの間に設置するスイッチによって構成させることを特徴とする請求項4に記載の移動型X線装置。
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