Plug-in equipment awakening detection circuit and detection device and electronic product
A detection circuit and wake-up circuit technology, which is applied in measuring devices, measuring resistance/reactance/impedance, measuring electricity, etc., can solve the problem that electronic products cannot be actively woken up, and achieve the effect of convenient operation
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Embodiment 1
[0030] Please refer to figure 1 , this embodiment provides a wake-up detection circuit for a plug-in device, and the circuit includes an access terminal, a wake-up circuit, and a detection circuit. Among them, the access terminal is used to access external devices, such as earphones, the wake-up circuit is connected to the access terminal, and the wake-up circuit is used to detect the access resistance of external devices, such as figure 1 It is detected that the grounding resistance of the plug-in device is R1. When the grounding resistance R1 of the plug-in device is connected, the resistance value in the wake-up circuit changes, and then a wake-up signal is output, and the output terminal of the wake-up circuit (ie figure 1 The wake-up chip terminal in the terminal) is used to connect to the host chip, and the output wake-up signal is used to wake up the host chip in the standby state, thus avoiding the manual operation of the user to wake up the electronic device. The inp...
Embodiment 2
[0039] This embodiment provides a wake-up detection device for a plug-in device. The device includes the wake-up detection circuit provided in Embodiment 1. When the device detects that a plug-in device is connected, it can output a wake-up signal triggered by the access resistance of the plug-in device. Signal, the wake-up signal can wake up the host chip in the standby state, avoiding manual wake-up of the host device, making the operation more convenient. At the same time, the access resistance of the external device is obtained by detecting the detection chip connected to the chip end, and the device type of the external device is obtained according to the preset relationship between the access resistance and the device type, and the detected device type is sent to the host chip, so that The host chip can automatically establish a corresponding communication connection with the external device, which saves the user's manual operation process. The wake-up detection device ca...
Embodiment 3
[0041] An electronic product, the electronic product includes a wake-up detection circuit as provided in Embodiment 1, the electronics can be a mobile phone, a tablet computer, a smart wearable device, etc., when an external device is connected, triggered by the access resistance of the external device Output a wake-up signal, the wake-up signal can wake up the host chip in the standby state, avoiding manual wake-up of electronic equipment, making the operation more convenient. At the same time, the access resistance of the external device is obtained by detecting the detection chip connected to the chip end, and the device type of the external device is obtained according to the preset relationship between the access resistance and the device type, and the detected device type is sent to the host chip, so that The host chip can automatically establish a corresponding communication connection with the external device, saving the user's manual operation process.
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