JPS62284631A - Running safety apparatus for moving type x-ray apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a traveling safety device for a mobile X-ray apparatus that is electrically driven and used for hospital rounds and the like.

[Prior art]

The running safety device of a conventional mobile X-ray device is, for example, a fourth
As shown in the figure, a bumper 3 is provided at the front of a trolley 2 on which an X-ray imaging device 1 is mounted and is driven by a drive motor.

The detector 4 detects that the object has touched an obstacle such as a wall,
The device was supposed to stop running.

[Problem that the invention seeks to solve]

However, in order to brake the device, a distance corresponding to the speed is required, so the detection device needs to have a certain stroke. There was a problem in that the overall length of the device increased, making it difficult to operate within the hospital room.

There was also the problem that the maximum speed during movement was limited due to stroke restrictions.

The present invention has been made to solve the above problems, and an object of the present invention is to quickly move a mobile X-ray apparatus (
The object of the present invention is to provide a travel safety device that can safely stop a mobile X-ray device when an obstacle is detected.

The above and other objects and novel features of the present invention are explained by the following description of the specification and the accompanying drawings.

[Means for solving problems]

A brief overview of typical inventions disclosed in this application is as follows.

That is, a non-tethered distance detector is disposed at the front of a cart on which an X-ray imaging device is placed and is driven by a drive motor, and the rotational speed of the traveling drive motor is determined based on the output of the non-tethered distance detector. This is a traveling safety device for a mobile X-ray device, characterized in that it is provided with means for controlling.

Further, a moving speed detector is provided at a predetermined position of the mobile X-ray device, and the detected distance of the obstacle is calculated with respect to the moving speed from the output of the moving speed detector and the output of the non-tethered distance detector. This traveling safety device for a mobile X-ray device is characterized by being provided with a means for changing the traveling safety device.

[Effect]

According to the above means, the non-tether type distance detector 1 is mounted on the front part of the cart on which the X-ray imaging device is mounted and runs by the drive motor, for example,
A non-tethered distance detector whose output changes according to the distance to the obstacle is provided, and the distance to the obstacle is converted into a voltage, and the difference voltage between this voltage and a set value is applied to the control circuit of the driving drive motor By applying this voltage, the maximum rotational speed of the driving motor is controlled, and the maximum speed of movement is controlled according to the distance to the obstacle. If there is an obstacle inside, the device can be stopped.

Further, a moving speed detector is provided at a predetermined position of the mobile X-ray device, and the detection distance of the obstacle is changed with respect to the moving speed based on the output of the moving speed detector and the output of the non-tethered distance detector. By providing a means, the detection distance when stopping the device changes depending on the speed, so the device can be moved quickly, and when an obstacle is detected, the mobile type
This allows the line equipment to be stopped safely.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be specifically described using the drawings.

In addition, in all the figures for explaining the embodiment, parts having the same functions are given the same reference numerals, and repeated explanations thereof will be omitted.

[Example I]

FIG. 1 is a perspective view showing a schematic configuration of a traveling safety device for a mobile X-ray device according to an embodiment of the present invention, and FIG. 2 is a schematic diagram showing a schematic configuration of a control circuit for a traveling drive motor according to the present embodiment. It is a block diagram.

As shown in FIG. 1, the travel safety device for a mobile X-ray device of this embodiment removes the bumper that was provided at the front of a trolley 2 on which an X-ray imaging device 1 is mounted and runs by a drive motor. A non-tethered distance detector 10, for example, a distance sensor whose output changes depending on the distance to the obstacle, is provided at the front of the trolley 2. This non-tether type distance detector 10 is for converting the distance to an obstacle into a voltage. By applying the voltage difference between the output voltage of the non-tether type distance detector 10 and the set value to the control circuit 11 of the travel drive motor, the maximum rotation speed of the travel drive motor is controlled. There is.

As shown in FIG. 2, the drive motor control circuit 11 amplifies the output voltage of a non-tethered distance detector (distance sensor) 10 that outputs the distance to an obstacle as a voltage using an amplifier 12. , is arranged to be input to one input terminal of the differential amplifier 13. The other input terminal of the differential amplifier 13 is connected to a speed regulator 1 consisting of, for example, a volume control.
4 are connected.

The differential amplifier 13 amplifies the difference voltage between the two inputs,
Output as a speed control signal according to the distance to the obstacle. This speed control signal is input to the speed control circuit 15 of the travel drive motor 19.

On the other hand, the output of the amplifier 12 is connected to one terminal of the comparator 16, and the other input terminal is connected to voltage dividing resistors 17A, 1
A voltage setting resistor 17 consisting of 7B is connected. When the voltage corresponding to the distance to the obstacle matches the voltage set by the voltage setting resistor 17, a signal is sent to the brake control circuit 18, and the rotation of the driving drive motor 19 is controlled via the speed control circuit 15. It is supposed to stop.

With this configuration, the braking distance is shortened by stopping the rotation of the travel drive motor 19 according to the distance to the obstacle, so the external dimensions of the device can be shortened. Thereby, the device can be moved efficiently and safely.

[Example ■]

FIG. 3 is a block diagram showing a schematic configuration of a control circuit for a driving drive motor of a traveling safety device for a mobile X-ray apparatus according to Embodiment 2 of the present invention.

The control circuit of the driving drive motor of this embodiment (2) is as follows.

As shown in FIG. 3, a moving speed detector 20 is provided at a predetermined position of the device, and the output of the non-contact distance travel detector 10 for detecting the distance to an obstacle and the output of the moving speed detector 20 are connected to an amplifier. The signal is input to the comparator 16 via 12 and 21. The moving speed detector 20 detects the moving speed based on, for example, the rotational speed of the travel drive motor 19.

The comparator 16 generates a signal at a point where the distance to the obstacle is relatively long when the moving speed is fast, and at a point where the distance to the obstacle is relatively short when the moving speed is slow, and uses this signal to brake. Input to control circuit 18. When a signal is output from the brake control circuit 18, the rotation of the travel drive motor 19 is stopped via the speed control circuit 15.

With this configuration, the detection distance for obstacles changes depending on the traveling speed of the device, and even if an obstacle is detected while traveling at high speed, a sufficient braking distance can be secured, so it is possible to The movement of the X-ray apparatus can be stopped safely, and the movement of the apparatus can be made efficient.

The present invention has been specifically explained above using examples, but
It goes without saying that the present invention is not limited to the embodiments described above, and can be modified in various ways without departing from the spirit thereof.

〔Effect of the invention〕

As explained above, according to the present invention, the braking distance is shortened by detecting the distance to the obstacle using a non-contact distance detector and controlling the moving speed of the device. can be shortened.

In addition, the detection distance of obstacles changes depending on the traveling speed of the device, so even if an obstacle is detected while traveling at high speed, sufficient braking distance can be ensured, so mobile type X
The movement of the line device can be stopped safely, and the movement of the device can be made efficient.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a schematic configuration of a traveling safety device for a mobile X-ray apparatus according to an embodiment of the present invention, and FIG. 2 is a schematic diagram showing a schematic configuration of a control circuit for a traveling drive motor according to an embodiment of the present invention. Block Diagram. FIG. 3 is a block diagram showing a schematic configuration of a control circuit for a driving drive motor of a traveling safety device for a mobile X-ray device according to Embodiment H of the present invention, and FIG. FIG. 3 is a diagram for explaining problems with the driving safety device. In the figure, 10... non-contact distance detector, 11... control circuit for driving drive motor, 12.21... amplifier, 1
3... Differential amplifier, 14... Speed regulator, 15...
・Speed control circuit, 16... Comparator, 17... Voltage setting resistor, 18... Brake control circuit, 19...
Traveling drive motor, 2o...Moving speed detector.

Claims (2)

[Claims] (1) A non-contact distance detector is disposed at the front of a cart on which an X-ray imaging device is mounted and is driven by a drive motor, and the rotation speed of the traveling drive motor is determined by the output of the non-contact distance detector. A travel safety device for a mobile X-ray device, characterized in that it is provided with a control means. (2) A non-contact distance detector is disposed at the front of the cart on which the X-ray imaging device is mounted and is driven by a drive motor, and the rotation speed of the traveling drive motor is determined by the output of the non-contact distance detector. A travel safety device for a mobile X-ray device, which is provided with a means for controlling, a travel speed detector provided at a predetermined position of the device, and a travel safety device for a mobile X-ray device that is provided with a means for controlling, and a travel speed detector is provided at a predetermined position of the device, and a travel safety device for a mobile A running safety device for a mobile X-ray device, characterized in that it is provided with means for changing the detection distance of an obstacle with respect to speed.