JP2001112751A - Ultasonograph - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve switching between a 100-V commercial AC power supply and a 200-V commercial AC power supply at low cost through a simple operation. SOLUTION: A main part 30 including an isolation transformer 31 and AC/DC converters 32, 33 is fixed in place, and a terminal block 41 for connecting the primary tap of the isolation transformer 31 and an overcurrent interrupting circuit 42 or the like are contained in a replaceable subsidiary part 40. A terminal block 51 for connecting the secondary tap of the transformer 31 and a line filter 52 or the like are contained in a subsidiary part 50, and connections at the terminal blocks 41, 51, the overcurrent interrupting circuit 42, and the line filter 52 correspond to 100 V or 200 V. Replacing and mounting the subsidiary parts 40, 50 allows electrical connections to be also made by connectors 61-63.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ultrasonic diagnostic apparatus, and more particularly to an ultrasonic diagnostic apparatus which can be used with a 100 V or 200 V commercial power supply.

[0002]

2. Description of the Related Art An ultrasonic diagnostic apparatus irradiates an ultrasonic wave into a subject (patient's body) and receives reflected waves to obtain various image information such as a B-mode image and an M-mode image. This is displayed on a display device and is used for diagnosing the condition of the affected part. Normally, a single transmitted ultrasonic beam is formed by pulsing each element of the ultrasonic transducer array and synthesizing the ultrasonic waves radiated from them, and simply by synthesizing the received signal from each element. A received signal for one received ultrasonic beam is obtained.
An electronic circuit including these transmission / reception circuits is housed in a housing, and is configured to be supplied with power from a power supply device housed in the housing.

A power supply receives electric power from a commercial AC power supply, converts this into DC power, and supplies it to an electronic circuit. As a commercial AC power supply, at present, one of a 100 V system and a 200 V system is used in each country in the world. By the way, an isolation transformer is often used in the AC input section of the power supply device in consideration of safety to a human body. Therefore, when the voltage of the commercial AC power supply is different, it is necessary to switch the isolation transformer between the 100 V system and the 200 V system.

Conventionally, two types of transformers, a 100V type isolation transformer and a 200V type isolation transformer, are used interchangeably, or a tapped isolation transformer is used as a configuration according to the switching of the power supply voltage. The method of switching the connection relation of the tap is used. When switching,
Overcurrent breakers (fuses, circuit breakers, circuit protectors, etc.) are also replaced because the current consumption differs between the 100 V system and the 200 V system.

[0005] In response to a demand for a compact ultrasonic diagnostic apparatus, a power supply apparatus is often provided in an area below the housing, and an isolation transformer is also provided there.

[0006]

However, in a conventional ultrasonic diagnostic apparatus, a commercial AC power supply of 100 V
There has been a problem that it is troublesome and costly to cope with a 0 V system commercial AC power supply. That is, conventionally, when changing from a 100 V commercial AC power supply to a 200 V commercial AC power supply or conversely, when changing from a 200 V commercial AC power supply to a 100 V commercial AC power supply, the isolation transformer itself must be replaced. , It is necessary to change the connection of the tap. In addition, the overcurrent breaker must be replaced.

More specifically, the whole power supply device at the lower portion of the housing of the ultrasonic diagnostic apparatus is replaced as it is, or the connection of the transformer taps is changed, and the overcurrent breaker is replaced. Can be However, since the isolation transformer alone exceeds 10 kg in weight and is installed in the lower part of the equipment housing where it is difficult to work, one worker can replace the isolation transformer and change the tap connection.・ It is very difficult to replace the overcurrent breaker. For example, it is impossible to perform on-site replacement work in demonstrations in other countries, and even in the production process of factories,
The replacement work between the 0V system and the 200V system is also a difficult work, and it takes time and effort, and the cost increases.

[0008] As a method of repairing the power supply unit as quickly as possible, the replacement of the failed part is the quickest method. However, replacing the entire power supply unit requires a heavy isolation transformer as described above. Is included, it is not possible for one worker to cover the hospital or the like where the delivery is made, and a plurality of human resources are required, which is problematic in terms of cost and time.

In view of the above, the present invention has been improved so that the work of switching between a 100 V-system commercial AC power supply and a 200 V-system commercial AC power supply is easy and cost-effective.
It is an object to provide an ultrasonic diagnostic apparatus.

[0010]

According to the present invention, there is provided an electronic circuit for transmitting and receiving an ultrasonic wave, and a DC power converted from a commercial AC power is supplied to the electronic circuit. An ultrasonic diagnostic apparatus comprising: a power supply device for supplying; an isolation transformer having taps on a primary side and a secondary side;
A main part fixed including an AC / DC converter, an overcurrent cutoff circuit corresponding to either a 100 V system or a 200 V system, and a tap on a primary side and a secondary side of the isolation transformer. It is characterized in that it comprises a sub-portion which is detachably attached, including a connection portion for making the connection relation to one of the 100 V system and the 200 V system.

The power supply unit includes a fixed main unit and a detachable sub unit. The main part includes an isolation transformer and an AC / DC converter. The isolation transformer has taps on its primary side and secondary side. The sub section includes an overcurrent cutoff circuit and one of the above isolation transformers.
A connection portion for connecting the secondary side tap and the secondary side tap is included, and these are made to correspond to either the 100V system or the 200V system. Therefore, if the sub part is replaced and attached, both of the primary side connection relation and the secondary side connection relation of the tap of the overcurrent cutoff circuit and the isolation transformer,
It corresponds to 100V system or 200V system.
Here, a heavy isolation transformer is 100
There is no need to exchange between V system and 200V system at the time of transition, and the connection relationship of the taps of the isolation transformer will correspond to 100V system or 200V system if the sub part is attached, and the primary Since the side winding and the secondary winding correspond to the 100 V system or the 200 V system, the work is easy. The common part between the 100V system and the 200V system is fixed as the main part, and only the different parts are replaced as sub-parts, so that the production cost can be reduced by using common parts and replacement at the installation site The work becomes easy and the cost can be reduced in this respect as well.

[0012]

Next, embodiments of the present invention will be described in detail with reference to the drawings. FIG.
FIG. 2 is a block diagram showing only a power supply unit corresponding to a 0 V commercial AC power supply, FIG. 2 is a block diagram showing only a power supply unit corresponding to a 200 V commercial AC power supply, and FIG. Schematic diagram showing the overall appearance of the diagnostic device,
FIG. 4 is a schematic perspective view showing the mechanical arrangement of the power supply unit. As shown in these drawings, the power supply device 13 includes a fixed (not configured to be replaced) main portion 30 and detachable and replaceable sub portions 40 and 50. .

As shown in FIG. 3 as a whole, this ultrasonic diagnostic apparatus comprises a main body 10 and a probe 20, and the probe 20 is detachably connected to the main body 10 by a connector 22 at the end of a cable 21. It has become. In a housing 11 of the main body 10, an electronic circuit 12 such as a transmission / reception circuit, an information processing circuit, a reception signal processing system, a controller, and the like, and a power supply device 13 for supplying DC power thereto are housed. The housing 11 is further provided with a display device 16 for displaying an ultrasonic image and the like, and an input device 17 provided with a keyboard, various switches, and the like. The housing 11, that is, the ultrasonic diagnostic apparatus main body 10 can be freely moved on the floor by the casters 14.

An ultrasonic transducer element in the probe 20 is pulse-driven by a transmission / reception circuit in the electronic circuit 12, and an ultrasonic reception signal from each element is amplified. When emitting an ultrasonic beam from the probe 20,
The elements are pulsed together, and the delay time and phase of the timing are controlled for each element to determine the direction and the focus of the ultrasonic composite wave beam generated from each element. When receiving,
A direction and a focus of the synthesized received ultrasonic beam are determined by giving each of the received signals from each element a predetermined delay time and a phase difference and synthesizing them. By controlling the delay time and the phase, electronic control of the synthesized ultrasonic beam at the time of transmission and reception is performed. This allows electronic scanning, for example, where the transmitted and received ultrasound beams scan a predetermined cross section. The ultrasonic reception signal is processed by a reception signal processing system to create a B-mode image and the like, which is sent to the display device 16 and displayed on its display screen. The input device 17 is for inputting an imaging mode such as a B mode and an M mode, and for inputting a patient name, a patient ID, and the like.

The power supply device 13 is housed in the lower part of the housing 11 of the ultrasonic diagnostic apparatus main body 10 as described above. This is because the power supply 13 is a heavy isolation transformer 31.
(See FIG. 4), so that it is arranged at the lower part to stabilize the weight balance. That is, the power supply device 13 is attached to the lower frame 15 of the housing 11 as shown in FIG. The power supply unit 13 includes a fixed (not presumed to be replaced) main unit 30 and a replaceable 2
And four sub-sections 40 and 50. The main section 30 is arranged at the center. The main unit 30 includes an isolation transformer 31 and an AC / DC converter 32 for a digital circuit.
And an AC / DC converter 33 for an analog circuit, which are arranged at the center of the lower frame 15.
Covers 19, 19 are attached to protect them.

The sub-sections 40 and 50 are respectively mounted at positions avoiding the caster movable areas 18 at both ends. The sub-units 40 and 50 are detachable, and are prepared in advance for a 100 V-system commercial AC power supply and a 200 V-system commercial AC power supply, and when either of them is mounted, a connector as shown in FIGS. 61 to 63 are electrically connected. These connectors 61 to 63 are panel-attached connectors, and when the sub-portions 40 and 50 are arranged at predetermined positions and mechanically attached, electrical connections in the connectors 61 to 63 are simultaneously made.

The sub sections 40, 5 for the 100V commercial AC power supply
FIG. 1 shows the electrical connection relationship when 0 is attached. The 100V-system commercial AC power supply sub-portion 40 is connected to the primary side of the isolation transformer 31, and has a connection relationship of connecting taps so as to connect the primary side windings of the isolation transformer 31 in parallel. Terminal block 41
, An overcurrent cutoff circuit 42 for 100 V, and an AC inlet 43. The overcurrent cutoff circuit 42 includes a fuse,
It consists of a circuit breaker and a circuit protector.

The 100 V-system commercial AC power supply sub-portion 50 is connected to the secondary side of the isolation transformer 31, and is connected to taps to connect the secondary windings of the isolation transformer 31 in parallel. , A 100 V line filter 52, and a main switch 53. The output side of the main switch 53 is connected to an AC / DC converter 32 for a digital circuit and an AC / DC converter 33 for an analog circuit of the main unit 30 via a connector 63.

200 V commercial AC power supply sub units 40, 5
FIG. 2 shows a case where 0 is attached. In the terminal block 41 of the sub section 40 for the 200 V commercial AC power supply, a connection for connecting taps is provided so that the primary winding of the isolation transformer 31 is connected in series. Similarly, the terminal block 51 of the 200 V-system commercial AC power supply sub-portion 50 is also connected to connect the taps so that the secondary windings of the isolation transformer 31 are connected in series. These subparts 4
Both the overcurrent cutoff circuit 42 and the line filter 52 included in 0 and 50 are for 200V.

Therefore, if the commercial AC power supply to be connected is 100
When the voltage changes from V to 200V or vice versa
When the system changes from the 00V system to the 100V system, the two sub units 40 and 50 need only be replaced and mounted. By doing so, the connection relationship between the primary and secondary windings of one fixed isolation transformer 31 corresponds to the 100 V system or the 200 V system, and the overcurrent cutoff circuit 42 and the line filter 52 can be replaced with a 100V system or a 200V system.

The parts to be replaced are a sub-unit 40 including a terminal block 41, an overcurrent cutoff circuit 42, and an AC inlet 43.
And only the sub section 50 including the terminal block 51, the line filter 52, and the main switch 53, and there is no need to replace the heavy isolation transformer 31.
The work is easy. The work can be sufficiently performed by one worker, and the labor cost can be reduced by omitting manual work. Further, only the sub units 40 and 50 are replaced, and the isolation transformer 31 and the AC / D
Since the C converters 32 and 33 are used in common for both power supply voltages, only the sub-units 40 and 50 need to be prepared in advance corresponding to each power supply voltage, so that the manufacturing cost can be reduced.

In this example, the isolation transformer 3
1 is not configured to be replaceable (although it is of course possible to disassemble and replace it if the complexity of the operation is not excluded). This is because the isolation transformer 31
This is because if the temperature rise and the voltage to be handled are properly designed, the possibility of failure is very low, and there is almost no need to replace it. In contrast, 2
The types of AC / DC converters 32 and 33 are designed so that they can be freely connected and detached by making electrical connection with a panel-mounted connector in case of failure. That is, as shown in FIG. 4, the covers 19, 19 are removed, and the two AC / DC
2, 33 can be exchanged.

In the above example, the connection of the taps of the isolation transformer 31 is performed by using the terminal blocks 41 and 51 having a predetermined connection. However, instead of the terminal blocks 41 and 51, a predetermined connection relationship is used. May be used, and this substrate may be used, or a direct connection may be made to the sub-portions 40, 50 of the connectors 61, 62 to realize a connection relationship.

In this case, the interchangeable sub units 40, 5
Although 0 is divided into two parts, it is also possible to combine them into one and replace only one sub part. In this case, the electrical connection relationship is the same as that shown in FIGS. 1 and 2, but the two sub-portions 40 and 50 are mechanically combined into one. Furthermore, the detachable electrical connection between the sub-units 40 and 50 and the main unit 30 is performed by a panel-mounted connector, but may be a connector provided on a substrate.

In addition, it goes without saying that the specific configuration and the like can be variously changed without departing from the spirit of the present invention.

[0026]

As described above, according to the ultrasonic diagnostic apparatus of the present invention, the operation between the 100 V commercial AC power supply and the 200 V commercial AC power supply can be performed easily and at low cost. Can be switched.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a block diagram showing a state in which switching to a 200 V system is performed in the embodiment.

FIG. 3 is a schematic view showing the whole of the embodiment.

FIG. 4 is an exemplary perspective view schematically showing only the power supply unit of the embodiment;

[Explanation of symbols]

 Reference Signs List 10 main body of ultrasonic diagnostic apparatus 11 housing 12 electronic circuit 13 power supply device 14 caster 15 lower frame 16 display device 17 input device 18 caster movable area 19 cover 20 probe 21 cable 22, 61 to 63 connector 30 main unit 31 isolation transformer 32 AC / DC converter for digital 33 AC / DC converter for analog 40, 50 Sub part 41, 51 Terminal block 42 Overcurrent cutoff circuit 43 AC inlet 52 Line filter 53 Main switch

Claims (1)

[Claims] 1. An ultrasonic diagnostic apparatus comprising: an electronic circuit for transmitting and receiving ultrasonic waves; and a power supply for supplying DC power converted from commercial AC power to the electronic circuit. Is an isolation transformer having taps on the primary side and the secondary side, and an AC / D
A fixed main part including a C converter;
The connection relationship between the overcurrent cut-off circuit corresponding to either the V system or the 200 V system and the taps on the primary side and the secondary side of the above-mentioned isolation transformer is set to 100 V system and 200 V system.
An ultrasonic diagnostic apparatus, comprising: a sub-part that is detachably attached including a connection part corresponding to one of the systems.