Portable aluminum alloy flash stimulator

Abstract

The utility model discloses a portable aluminum alloy flash stimulator which comprises a shell, an LED screen is arranged on one side of the shell, a USB interface, an LED screen switch and a power jack are further arranged on the shell, the USB interface is used for communicating with an upper computer, the LED screen switch is connected with and controls the LED screen, and the power jack is connected with an external power source to obtain working voltage. The system further comprises a drive circuit and a master control MCU, the drive circuit is connected with the LED screen and comprises a clock circuit, a reset circuit and a communication circuit, the master control MCU is connected with an upper computer through the communication circuit for communication, and the clock circuit is connected with the master control MCU and used for generating stable clock signals. The beneficial effects of the utility model are that the housing employs the detachable aluminum alloy to replace a conventional plastic plate, and the housing is fixed through the screws, thereby being firm, resistant to falling, free of deformation, not liable to yellow and deform, small in size, and convenient to carry; the driving circuit is matched with the main control MCU, the LED screen can be driven under the condition of low power consumption, and the energy consumption is low.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and particularly relates to a portable aluminum alloy flash stimulator. Background Technique

[0002] A commonly used stimulation method for visual electroencephalogram evoked acquisition is to place a flasher with adjustable frequency intermittent light stimulation about 25 cm in front of the patient's eyes, also known as a "flash stimulator". When the human brain is stimulated by strong flashes of light, the optic tract and visual cortex will be excited. By performing visual stimulation while collecting electroencephalograms, it is possible to obtain evoked potentials with event characteristics.

[0003] Most of the flash stimulators currently configured in hospitals adopt a floor-standing design and a plastic shell, which are bulky and not easy to carry. After being used for a period of time, they are prone to yellowing and breakage, bringing a lot of inconvenience to medical staff. Content of the Utility Model

[0004] The purpose of the utility model is to provide a portable aluminum alloy flash stimulator to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A portable aluminum alloy flash stimulator, including a housing made of aluminum alloy material. One side of the housing is provided with an LED screen. The housing is also provided with a USB interface, an LED screen switch and a power socket. The USB interface is used for communication with the host computer. The LED screen switch is connected to and controls the LED screen. The power socket is connected to an external power supply to obtain the working voltage;

[0006] It also includes a drive circuit and a main control MCU. The drive circuit is connected to the LED screen. The drive circuit includes a clock circuit, a reset circuit and a communication circuit. The main control MCU communicates with the host computer through the communication circuit. The clock circuit is connected to the main control MCU to generate a stable clock signal.

[0007] Preferably, the clock circuit includes a crystal oscillator Y2, a capacitor C29 and a capacitor C30. The crystal oscillator Y2 is connected to the main control MCU, and the crystal oscillator Y2 is grounded through the capacitor C29 and the capacitor C30.

[0008] Preferably, the reset circuit includes a resistor R21 and a capacitor C31. The reset circuit is connected to the seventh pin of the main control MCU, and the capacitor C31 is grounded.

[0009] Preferably, the communication circuit includes a triode Q1. The base of the triode Q1 is connected to the 38th pin of the main control MCU through a resistor R22, and the collector is connected to the 33rd pin of the main control MCU through a resistor R27.

[0010] Preferably, the 24th, 36th, and 48th pins of the main control MCU are connected to the power supply through filtering capacitors C32, C37, C35, and C36.

[0011] Preferably, the 9th pin of the main control MCU is connected to the power supply through filtering capacitor C33 and capacitor C38.

[0012] Preferably, the main control MCU uses a Cortex-M0+ 32-bit low-power single-chip processor of the domestic GigaDevice Semiconductor's APM32F072C8T6 model.

[0013] Preferably, the housing includes a left housing, a right housing, a front housing, and a rear housing, and the left housing, right housing, front housing, and rear housing are fixed by screws.

[0014] Preferably, the 10th, 11th, 12th, and 13th pins of the main control MCU generate 4-channel PWM pulse width modulation signals to control the brightness of 4 groups of LEDs.

[0015] Preferably, the 32nd and 33rd pins of the main control MCU are respectively USB D-D+ signal pins, which are connected to the USB interface and communicate with the host computer.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows: The housing of the present utility model uses a detachable aluminum alloy instead of the traditional plastic plate. The housing is fixed by screws, which is firm, anti-drop, and does not deform. It is not easy to turn yellow and deform, and it is small in size and convenient to carry. The drive circuit of the present utility model cooperates with the main control MCU to drive the LED screen under low power consumption, with low energy consumption. Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of the present utility model;

[0018] Figure 2 It is a schematic module diagram of the present utility model;

[0019] Figure 3 It is a schematic circuit diagram of the present utility model.

[0020] In the figure: 1. Housing; 11. Left housing; 12. Right housing; 13. Front housing; 14. Rear housing; 2. LED screen; 3. LED screen switch; 100. Drive circuit. Detailed Embodiments

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0022] Please refer to Figures 1 to 3 , the present utility model provides a technical solution: a portable aluminum alloy flash stimulator, including a housing 1, one side of the housing is provided with an LED screen 2, and the housing 1 is also provided with a USB interface, an LED screen switch 3 and a power jack. The USB interface is used for communication with the host computer, the LED screen switch 3 is connected to and controls the LED screen 2, and the power jack is connected to an external power supply to obtain the working voltage;

[0023] It also includes a driving circuit 100 and a main control MCU. The driving circuit 100 is connected to the LED screen 2. The driving circuit 100 includes a clock circuit, a reset circuit and a communication circuit. The main control MCU communicates with the host computer through the communication circuit, and the clock circuit is connected to the main control MCU to generate a stable clock signal.

[0024] In the embodiment of the present utility model, the clock circuit includes a crystal oscillator Y2, a capacitor C29 and a capacitor C30. The crystal oscillator Y2 is connected to the main control MCU, and the crystal oscillator Y2 is grounded through the capacitor C29 and the capacitor C30.

[0025] In the embodiment of the present utility model, the reset circuit includes a resistor R21 and a capacitor C31. The reset circuit is connected to the seventh pin of the main control MCU, and the capacitor C31 is grounded.

[0026] In the embodiment of the present utility model, the communication circuit includes a triode Q1. The base of the triode Q1 is connected to the 38th pin of the main control MCU through a resistor R22, and the collector is connected to the 33rd pin of the main control MCU through a resistor R27.

[0027] In the embodiment of the present utility model, the 24th, 36th, and 48th pins of the main control MCU are connected to the power supply through filtering capacitors C32, C37, C35 and C36.

[0028] In the embodiment of the present utility model, the 9th pin of the main control MCU is connected to the power supply through a filtering capacitor C33 and a capacitor C38.

[0029] In the embodiment of the present utility model, the 10th, 11th, 12th, and 13th pins of the main control MCU respectively generate PWM pulse width modulation signals of 4 channels to control the brightness of 4 groups of LEDs.

[0030] In an embodiment of the present utility model, the 32nd and 33rd pins of the main control MCU are respectively USB D-D+ signal pins, which are connected to a USB interface and communicate with a host computer.

[0031] In an embodiment of the present utility model, the main control MCU adopts a Cortex-M0+ 32-bit low-power single-chip processor of the domestic GigaDevice semiconductor's APM32F072C8T6 model.

[0032] In an embodiment of the present utility model, the housing 1 includes a left housing 11, a right housing 12, a front housing 13 and a rear housing 14, and the left housing 11, the right housing 12, the front housing 13 and the rear housing 14 are fixed by screws. The housing 1 is made of aluminum alloy material.

[0033] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model, and the scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A portable aluminum alloy flash stimulator, characterized in that: It includes a shell, which is made of aluminum alloy. An LED screen is arranged on one side of the shell. A USB interface, an LED screen switch and a power jack are also arranged on the shell. The USB interface is used to communicate with a host computer. The LED screen switch is connected to and controls the LED screen. The power jack is connected to an external power supply to obtain a working voltage. It also includes a driving circuit and a main control MCU. The driving circuit is connected to the LED screen. The driving circuit includes a clock circuit, a reset circuit and a communication circuit. The main control MCU is connected to a host computer through the communication circuit for communication. The clock circuit is connected to the main control MCU to generate a stable clock signal.

2. A portable aluminum alloy flash stimulator according to claim 1, characterized in that: The clock circuit includes a crystal oscillator Y2, a capacitor C29 and a capacitor C30. The crystal oscillator Y2 is connected to the main control MCU, and the crystal oscillator Y2 is grounded through the capacitors C29 and C30.

3. A portable aluminum alloy flash stimulator according to claim 2, characterized in that: The reset circuit comprises a resistor R21 and a capacitor C31. The reset circuit is connected to the seventh pin of the main control MCU, and the capacitor C31 is grounded.

4. A portable aluminum alloy flash stimulator according to claim 3, characterized in that: The communication circuit includes a transistor Q1 , a base of the transistor Q1 is connected to the 38th pin of the main control MCU through a resistor R22 , and a collector of the transistor Q1 is connected to the 33rd pin of the main control MCU through a resistor R27 .

5. A portable aluminum alloy flash stimulator according to claim 4, characterized in that: The 24th, 36th and 48th pins of the main control MCU are connected to the power supply through filter capacitor C32, capacitor C37, capacitor C35 and capacitor C36.

6. A portable aluminum alloy flash stimulator according to claim 5, characterized in that: The 9th pin of the main control MCU is connected to the power supply through the filter capacitor C33 and the capacitor C38.

7. A portable aluminum alloy flash stimulator according to claim 1, characterized in that: The main control MCU adopts the Cortex-M0+ 32-bit low-power single-chip processor of the domestic Jiuhai Semiconductor model APM32F072C8T6.

8. A portable aluminum alloy flash stimulator according to claim 1, characterized in that: The shell comprises a left shell, a right shell, a front shell and a rear shell, and the left shell, the right shell, the front shell and the rear shell are fixed by screws.

9. A portable aluminum alloy flash stimulator according to claim 1, characterized in that: The 10th, 11th, 12th and 13th pins of the main control MCU respectively generate PWM pulse width modulation signals of 4 channels to control the brightness of 4 groups of LEDs.

10. A portable aluminum alloy flash stimulator according to claim 1, characterized in that: The 32nd and 33rd pins of the main control MCU are respectively USB D-D+ signal pins, which are connected to the USB interface and communicate with the host computer.

Images