Recently, I have been taking over a new Blue Ao Sound smart lock project, and there is one issue that urgently needs to be overcome - low power consumption.

The customer strictly demands that the power consumption be as low as possible while implementing the functions, and this challenge forces us to make breakthroughs or optimizations in energy conservation.

Firstly, let's describe the working principle of a smart lock here (currently discussing the scenario of app/cloud controlled smart locks). The chip (lock) continuously sends two types of pulses, one is its own status beacon, and the other is a set of pulses used to detect app control commands (hereinafter referred to as a set of pulses). Only when a set of pulses exists and matches can the lock be controlled. With basic hardware confirmation, our main optimization directions are two-fold.

***The optimization direction is to face the pulse frequency

A set of pulses working together is the basis for opening the door, and the frequency of pulse emission means the ability to control. For example, if a set of pulses is emitted every 1000 milliseconds with a duration of 5 milliseconds, then in the worst case, you need to wait 995 milliseconds for the lock to open when you press the unlock button.

In short, the higher the pulse frequency, the faster the response speed of the lock, and the more electricity it consumes. According to this direction, coordinating the transmission frequency of this set of pulses is the main optimization goal. Currently, our goal is to reduce the frequency within the acceptable range of users to achieve power saving.

The second optimization direction is to face the usage scenarios of the equipment

Different from other manufacturers, the Blue Ocean Sound technology team has designed a three-layer structure based on the corresponding usage scenarios:

1. Deep sleep state, which cannot be awakened by network. It can be awakened by pressing a button or using a timer. Mostly used in the early hours of the morning (customizable).

2. Shallow sleep state, which reduces the frequency of pulse transmission but can receive network data. In general usage scenarios, 90% are in this state.

3. Synchronize detection status, which works with high intensity to quickly respond to unlocking.

Under the current technological conditions, we have achieved the customer's requirements for ultra-low power consumption through optimization in these two aspects. Although there have been some compromises in operability, we have basically gained the customer's recognition and approval.

Customer satisfaction is the driving force behind our growth!