Challenge of real-time control circuit simulation using buttons in tkinter

I'm trying to build a simple circuit simulator that uses the tkinter interface to control the switch state in the circuit in real time, thereby observing changes in voltage and current. I've written the initial code but have some logic issues that cause the analog behavior of the circuit to not match expectations.

My goal is to simulate the switch opening and closing by clicking a button, thus showing the changes in voltage and current on a real-time chart. However, when the current code clicks the switch button, it does not update the voltage and current from the click time, but starts over from the 0th moment of the simulation. Furthermore, the switch button cannot properly control the circuit's disconnection and closing.

I have tried modifying the calculate_circuit_response method in the circuitsimulator class, as well as the toggle_manual_switch and update_plot methods in the circuitsimulationgui class, but neither achieves the expected effect. I have also sought help on other platforms, but the answers I got were mostly unverified AI generated content.

The effect I hope to achieve is: when the switch button is clicked, the state of the circuit changes from the click moment, and the chart of voltage and current is updated in real time, accurately reflecting the switch's opening and closing state.

Here is my code:

 # Here is your code content

Problem analysis and solutions

After analyzing your code and the problem described, I found two main problems:

1. The current time index is not updated : In the toggle_manual_switch method, you use self.current_time_index to get the index of the current moment, but this value has never been updated, so the chart is always updated from time 0.
2. Incorrect update of switch status and voltage and current : In the calculated_circuit_response method, there is a problem with the update logic of voltage and current, resulting in changes in switch status that cannot be correctly reflected on the chart.

Code modification

To solve these problems, we need to make the following modifications to your code:

Update the current time index

In the update_plot method, we need to update the value of self.current_time_index to synchronize it with the current frame:

 def update_plot(self, frame):
    self.simulator.calculate_circuit_response(frame)
    time = t[frame]
    self.current_time_index = frame # Update the current time index v_circuit = self.simulator.voltageovertime[:frame 1]
    i_circuit = self.simulator.currentovertime[:frame 1]

    self.v_line.set_data(t[:len(v_circuit)], v_circuit)
    self.i_line.set_data(t[:len(i_circuit)], i_circuit)
    self.axs[0].set_xlim(0, t_max)
    self.axs[1].set_xlim(0, t_max)
    self.axs[0].set_ylim(0, 20)
    self.axs[1].set_ylim(0, 2)
    print("plot updated")
    print("plot voltage:", v_circuit[-1], "v")
    return self.v_line, self.i_line

Correct switch status and voltage and current update logic

In the calculate_circuit_response method, we need to ensure that the values ??of voltage and current are updated from the current moment and that the changes in the switching state can be correctly reflected on the chart:

 def calculate_circuit_response(self, current_time_index):
    if current_time_index > self.previous_switch_time_index:
        if self.switch_states[current_time_index] != self.switch_states[current_time_index - 1]:
            self.previous_switch_state = not self.previous_switch_state
            next_switch_index = current_time_index np.argmax(
                self.switch_states[current_time_index:] != self.switch_states[current_time_index])
            if not self.previous_switch_state:
                self.VoltageOverTime[current_time_index:] = 0
                self.CurrentOverTime[current_time_index:] = 0
            else:
                self.VoltageOverTime[current_time_index:] = V_battery * np.ones_like(
                    self.VoltageOverTime[current_time_index:])
                self.CurrentOverTime[current_time_index:] = V_battery / R_load * np.ones_like(
                    self.CurrentOverTime[current_time_index:])
            self.previous_switch_time_index = next_switch_index

With these modifications, your circuit simulator should be able to correctly update the chart of voltage and current from the moment the switch button is clicked, and changes in the switch state can be reflected in the simulation in real time.

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