Photostimulation device for electrophysiology

Abstract

The utility model provides a photostimulation device for electrophysiology, which is applied to the technical field of electrophysiology and comprises a main control module, a driving module and a light-emitting module, the driving module is driven by a driving signal of the main control module to control a light-emitting part corresponding to the light-emitting module to emit a stable and controllable optical signal to an experimental body, and the light-emitting module is driven by a driving signal of the main control module. The driving module comprises a main control chip U2, the main control chip U2 accesses a control signal of the main control module and outputs a driving signal to drive the light-emitting part to emit light, and an RSET pin of the main control chip U2 is connected with an adjustable resistor R12 which is used for adjusting the intensity of the driving signal output by the main control chip U2. The driving module is controlled by the main control module to output accurate and controllable driving signals to drive the corresponding light-emitting pieces to emit light signals, and light stimulation needed by an experiment body is achieved by means of the light signals.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrophysiology, and in particular relates to a light stimulation device for electrophysiology. Background Art

[0002] Electrophysiology is a scientific method used to study and measure the electrical properties of cells, particularly neurons and cardiomyocytes. It is widely used in basic scientific research, drug development, and clinical diagnosis and treatment, particularly in neuroscience and cardiology. Electrophysiology provides direct measurements of ion flow inside and outside cells, making it a crucial tool for understanding cellular function and communication.

[0003] Many electrophysiological experiments and diagnostics require precise control of LED brightness to provide appropriate light stimulation. Existing LED control systems often lack sufficiently fine-grained brightness adjustment, limiting their application in advanced electrophysiological experiments requiring precise light control. Furthermore, the response time for brightness adjustment can be too long to meet the rapidly changing light stimulation requirements of experiments. Utility Model Content

[0004] In view of the above problems in the prior art, the purpose of the present invention is to provide an electrophysiological light stimulation device, which controls the driving module through the main control module to output a precisely controllable driving signal to drive the corresponding light-emitting component to emit a light signal, thereby relying on the light signal to achieve the light stimulation required by the experimental subject.

[0005] An electrophysiological light stimulation device includes a main control module, a driving module and a light emitting module. The driving module is driven by a driving signal from the main control module to control the light emitting element corresponding to the light emitting module to emit a stable and controllable light signal to the experimental subject.

[0006] The driving module includes a main control chip U2, which receives the control signal of the main control module and outputs a driving signal to drive the light-emitting element to emit light. The RSET pin of the main control chip U2 is connected to an adjustable resistor R12 for adjusting the intensity of the driving signal output by the main control chip U2.

[0007] Preferably, the RSET pin of the main control chip U2 is connected to a resistor R4 and an adjustable resistor R12 in series, and the other end of the adjustable resistor R12 is grounded.

[0008] Preferably, the driving module includes a switch tube Q2, the gate of the switch tube Q2 is connected to the control signal of the main control module, the source is grounded, the drain is connected to the GND pin of the main control chip U2, the EN pin of the main control chip U2 is connected to the enable signal of the main control module, and a voltage regulator tube is connected between the gate and source of the switch tube Q2.

[0009] Preferably, the main control chip U2 outputs two sets of drive signals, one of which is connected to the source of the switch tube Q1, and the other is connected to the source of the switch tube Q3. The gate of the switch tube Q1 is connected to LED lamp 1, and the gate of the switch tube Q3 is connected to LED lamp 2.

[0010] Preferably, a voltage regulator tube is connected between the gate and source of the switch tube Q1 and between the gate and source of the switch tube Q3 respectively.

[0011] Preferably, it also includes a power management module, which includes a voltage regulator U3, the VIN pin of the voltage regulator U3 is connected to a battery power supply, the VIN pin of the voltage regulator U3 is also connected to resistors R5 and R6 connected in series, and the other end of the resistor R6 is grounded, the main control module is connected between the resistors R5 and R6, the VOUT pin of the voltage regulator U3 outputs the supply voltage, the VOUT pin of the voltage regulator U3 is also connected to a capacitor C2, and the other end of the capacitor C2 is grounded.

[0012] The beneficial effects of the present invention are as follows: the electrophysiological light stimulation device can realize fast-response brightness adjustment of the LED light through the main control module and the drive module, and allows the user to change the brightness in real time according to the experimental requirements, thereby ensuring the accuracy and consistency of the experimental conditions.

[0013] Through the control signal of the main control module and the mutual cooperation between the switch tube Q2, the power on and off control of the driving module is realized, so that the LED light automatically reduces power consumption or turns off when not in use, reducing energy consumption and preventing excessive use.

[0014] The parameters set by the main control module control the driving module to drive the light-emitting device, which allows users to adjust the required parameters at any time according to experimental needs. It has high flexibility and is more convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 It is a circuit block diagram of the utility model;

[0017] Figure 2 This is a circuit diagram of the main control module of the utility model;

[0018] Figure 3 It is a circuit diagram of the power management module of the utility model;

[0019] Figure 4 This is a circuit diagram of the drive module of the utility model;

[0020] Figure 5 This is a circuit diagram of the adjustable resistor of the utility model;

[0021] Figure 6 It is a circuit diagram of the light-emitting element of the present utility model. DETAILED DESCRIPTION

[0022] Example 1

[0023] like Figure 1 As shown, an electrophysiological light stimulation device includes a main control module, a driving module, a light emitting module and a battery management module. The driving module is driven by the driving signal of the main control module to control the light emitting element corresponding to the light emitting module to emit a stable and controllable light signal to the experimental subject.

[0024] like Figure 2 As shown, the main control module includes a main control chip U1, which is also connected to an infrared receiving head (not shown in the figure). The main control chip U1 realizes infrared communication with the PC end based on the infrared light signal received by the infrared receiving head, and relies on the infrared light signal to receive commands from the PC end to complete the parameter setting and drive control of the main control chip U1.

[0025] like Figure 4 As shown, the driving module includes a main control chip U2, which receives the control signal of the main control module and outputs a driving signal to drive the light-emitting element to emit light. The RSET pin of the main control chip U2 is connected to an adjustable resistor R12 for adjusting the intensity of the driving signal output by the main control chip U2. Figure 4 、 Figure 5 As shown, the RSET pin of the main control chip U2 is connected to a resistor R4 and an adjustable resistor R12 in series, and the other end of the adjustable resistor R12 is grounded.

[0026] In addition, the driver module includes a switch Q2. Its gate receives the control signal from the main control module, its source is grounded, and its drain is connected to the GND pin of the main control chip U2. The EN pin of the main control chip U2 receives the enable signal from the main control module. A voltage regulator is connected between the gate and source of the switch Q2. When the control signal from the main control module turns on the switch Q2, the main control chip U2 is powered on, facilitating on-off control of the LED light. Control by the switch Q2 enables the driver module to effectively switch on and off, thereby reducing power consumption and, in turn, improving the energy efficiency of the entire device.

[0027] like Figure 4 、 Figure 6 As shown, the main control chip U2 outputs two sets of drive signals, one of which is connected to the source of the switch tube Q1, and the other is connected to the source of the switch tube Q3. The gate of the switch tube Q1 is connected to LED lamp 1, and the gate of the switch tube Q3 is connected to LED lamp 2.

[0028] The main control module controls the main control chip U2 to flexibly control the lighting and extinguishing of each LED lamp. At the same time, the resistance value of the access resistor is adjusted by the adjustable resistor R12 to adjust the brightness of the LED lamp and realize the controllable brightness of the light stimulation signal.

[0029] Note that a voltage regulator diode is connected between the gate and source of switch Q1 and between the gate and source of switch Q3. The primary function of a voltage regulator diode is to protect the circuit from excessive voltage. When the voltage exceeds its rated value, it turns on and absorbs the excess voltage by short-circuiting, thus protecting the circuit.

[0030] like Figure 3 As shown, the power management module includes a voltage regulator U3, the VIN pin of the voltage regulator U3 is connected to the battery power supply, the VIN pin of the voltage regulator U3 is also connected to the resistor R5 and the resistor R6 in series, the other end of the resistor R6 is grounded, the main control module is connected between the resistor R5 and the resistor R6, the VOUT pin of the voltage regulator U3 outputs the supply voltage, the VOUT pin of the voltage regulator U3 is also connected to the capacitor C2, the other end of the capacitor C2 is grounded, and the capacitor C2 is used to stabilize the power supply and prevent voltage fluctuations.

[0031] It should be noted that the battery power supply is connected to a diode D1, which is unidirectional and conducts electricity to ensure the correct polarity of the battery power supply and prevent reverse current from damaging the circuit.

[0032] Working principle: When the electrophysiological light stimulation device is in use, the driving module is powered on by the driving signal of the main control module. After power is turned on, the driving signal is controlled according to the parameters set by the main control module and the resistance value of the adjustable resistor R12 connected to the circuit to drive LED lights 1 and 2 to light up, thereby providing the experimental subject with the required light stimulation, making it easier to collect the electrophysiological information generated by the organism due to the light stimulation.

[0033] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An electrophysiological light stimulation device, characterized in that: It includes a main control module, a driving module and a light emitting module. The driving module is driven by the driving signal of the main control module to control the light emitting element corresponding to the light emitting module to emit a stable and controllable light signal to the experimental subject. The driving module includes a main control chip U2, which receives the control signal of the main control module and outputs a driving signal to drive the light-emitting element to emit light. The RSET pin of the main control chip U2 is connected to an adjustable resistor R12 for adjusting the intensity of the driving signal output by the main control chip U2.

2. The electrophysiological light stimulation device according to claim 1, characterized in that: The RSET pin of the main control chip U2 is connected to a resistor R4 and an adjustable resistor R12 in series, and the other end of the adjustable resistor R12 is grounded.

3. The electrophysiological light stimulation device according to claim 1, wherein: The driving module includes a switch tube Q2, the gate of the switch tube Q2 is connected to the control signal of the main control module, the source is grounded, the drain is connected to the GND pin of the main control chip U2, the EN pin of the main control chip U2 is connected to the enable signal of the main control module, and a voltage regulator tube is connected between the gate and source of the switch tube Q2.

4. The electrophysiological light stimulation device according to claim 1, wherein: The main control chip U2 outputs two sets of drive signals, one of which is connected to the source of the switch tube Q1, and the other is connected to the source of the switch tube Q3. The gate of the switch tube Q1 is connected to LED lamp 1, and the gate of the switch tube Q3 is connected to LED lamp 2.

5. The electrophysiological light stimulation device according to claim 4, characterized in that: A voltage regulator tube is connected between the gate and source of the switch tube Q1 and between the gate and source of the switch tube Q3 respectively.

6. The electrophysiological light stimulation device according to claim 1, characterized in that: It also includes a power management module, which includes a voltage regulator U3. The VIN pin of the voltage regulator U3 is connected to a battery power supply. The VIN pin of the voltage regulator U3 is also connected to resistors R5 and R6 connected in series, and the other end of the resistor R6 is grounded. The main control module is connected between the resistors R5 and R6. The VOUT pin of the voltage regulator U3 outputs the supply voltage. The VOUT pin of the voltage regulator U3 is also connected to a capacitor C2, and the other end of the capacitor C2 is grounded.

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