Startup and shutdown control device of mobile DR

Abstract

The utility model provides a mobile DR on-off control device, which comprises a key switch, a power supply module, a power supply chip, a controller and a load, the power supply module is connected with the power supply chip and supplies power to the power supply chip, the power supply chip is connected with the load and supplies power to the load, the key switch is connected with the controller, and the controller is connected with the key switch. The controller is connected with the power supply chip, the controller receives a small current signal sent by the key switch, generates a corresponding switching signal and sends the switching signal to the power supply chip, and the power supply chip starts or stops supplying power to the load according to the received switching signal. The on-off of the mobile DR can be better controlled, the service life of the mobile DR can be prolonged, and the use safety of the mobile DR can be improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to mobile DR technical field, especially related to a switch control device of mobile DR. BACKGROUND

[0002] Now the combination of digital technology and X-ray photography technology realizes the wide application of digital X-ray photography. Bedside mobile digital photography technology emerges as the times require. The existing X-ray machine has fixed type and mobile type, and the mobile DR can meet the needs of patients in ICU intensive care unit, first-aid window and ward, and becomes the indispensable mobile medical equipment of hospital. At present, when the mobile DR is started, the switch is directly connected with the battery and the power chip, so as to supply power for the rear load. However, when the load increases and the required power rises, the battery supply current increases, which will cause the switch to be damaged. Moreover, the current exceeding the safety threshold is supplied through the switch, and the user needs to interact with the switch, so the safety is low. And when the switch is turned off, the switch is directly powered off, which may cause the LCD screen and PC host of the mobile DR to be damaged. SUMMARY

[0003] Therefore, the utility model discloses a switch control device of mobile DR, which aims at solving the above technical problems in the prior art.

[0004] The utility model discloses a switch control device of mobile DR, which is installed on the mobile DR, and characterized in that it comprises a key switch, a power module, a power chip, a controller and a load. The power module is connected with the power chip and supplies power to the power chip. The power chip is connected with the load and supplies power to the load. The key switch is connected with the controller. The controller is connected with the power chip. The controller receives the small current signal sent by the key switch, generates a corresponding switch signal and sends it to the power chip. The power chip starts or stops supplying power to the load according to the received switch signal.

[0005] Preferably, the load includes an LCD load and a PC load. The LCD load is a screen for displaying an operation interface. The PC load is a computer host for transmitting data and issuing instructions.

[0006] Preferably, the PC load is also connected with the controller and feeds back the PC current value to the controller. When the controller receives the PC current value of zero, it controls the power chip to be closed.

[0007] Preferably, the controller is a single-chip microcomputer.

[0008] Preferably, the key switch is a metal key.

[0009] Compared with the prior art, the mobile DR switch control device has the following advantages: the start and stop of the power supply chip are controlled by a small current, which can avoid the use safety problem caused by the damage of the metal key and effectively avoid the damage of the LCD screen and the PC host, prolong the service life of the mobile DR, and improve the use safety of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 is the principle block diagram of the switch control device of the mobile DR in the embodiment. DETAILED DESCRIPTION

[0011] The following is a specific embodiment of the utility model and further describes the technical scheme of the utility model in combination with the drawings, but the utility model is not limited to these embodiments.

[0012] As Figure 1 shown, the switch control device of the mobile DR provided by the utility model includes a key switch, a power supply module, a power supply chip, a controller and a load, the power supply module and the power supply chip are connected, the power supply chip and the load are connected, the key switch and the controller are connected, and the controller and the power supply chip are connected. In this embodiment, the load includes an LCD load and a PC load, the LCD load is a screen for displaying an operation interface, and the PC load is a computer host for transmitting and receiving data and issuing instructions.

[0013] The power supply module supplies power to the power supply chip, the power supply chip supplies power to the LCD load and the PC load, the controller receives a small current signal sent by the key switch and generates a corresponding switch signal and sends it to the power supply chip, and the power supply chip starts or stops supplying power to the load according to the received switch signal.

[0014] In addition, in order to facilitate monitoring whether the PC load is closed, the PC load and the controller are connected to feed back the PC current value to the controller, and the controller controls the power supply chip to be closed when the PC current value is zero.

[0015] In this embodiment, the key switch adopts a metal key, which can generate a small current signal when interacting with the user. The brand of the power supply chip is TI (Texas Instruments), and the model is LM2576HVSX-ADJ / NOPB; this power supply chip is a step-down DC-DC power supply chip, which can convert a direct current voltage from a higher value to a lower value and output it to the rear-end load. The controller adopts a single-chip microcomputer, which realizes the start and stop of the power supply chip by a small current, which can effectively protect the safety of the user and prevent the damage of the LCD load and the PC load.

[0016] The principle of the utility model is:

[0017] In the whole machine off state, the user interacts with the metal button to generate a first small current signal, the single-chip microcomputer receives the signal and sends a start signal to the power chip, the power chip receives the signal and slowly starts to supply power to the LCD load and PC load, and the mobile DR is successfully started.

[0018] In the whole machine on state, the user interacts with the metal button to generate a second small current signal, the single-chip microcomputer receives the signal, first closes the LCD load and PC load, then detects the PC current value, when the PC current drops to zero, the single-chip microcomputer sends a shutdown signal to the power chip, the power chip is closed, and the mobile DR is successfully shut down.

[0019] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.

Claims

1. A mobile DR power on / off control device, mounted on the mobile DR, characterized in that: The invention comprises a key switch, a power module, a power chip, a controller and a load. The power module is connected to the power chip and supplies power to the power chip. The power chip is connected to the load and supplies power to the load. The key switch is connected to the controller. The controller is connected to the power chip. The controller receives the small current signal sent by the key switch and generates a corresponding switch signal and sends it to the power chip. The power chip starts or stops supplying power to the load according to the received switch signal.

2. The mobile DR power on / off control device according to claim 1, characterized in that: The load includes an LCD load and a PC load. The LCD load is a screen for displaying an operation interface, and the PC load is a computer host for sending and receiving data and issuing instructions.

3. The mobile DR power on / off control device according to claim 2, characterized in that: The PC load is also connected to the controller and feeds back the PC current value to the controller. When the controller receives that the PC current value is zero, it controls the power chip to turn off.

4. A mobile DR power on / off control device according to claim 1, 2 or 3, characterized in that: The controller is a single chip microcomputer.

5. A mobile DR power on / off control device according to claim 1, 2 or 3, characterized in that: The key switch is a metal key.

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