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Self-propelled pants

23.08.2003

At the Japanese University of Tsukubo (province of Iboroki), self-propelled pants have been invented that relieve a person from fatigue while walking by automatically rearranging his legs.

The device consists of a pore of flat "legs" fixed along the limbs of a person, and a control unit packed in a backpack. The total mass of these additional devices is 17 kg, however, a person practically does not feel their heaviness due to the fact that he does not waste energy on steps. The built-in microprocessor, using special sensors, captures the brain signals sent to make movements, and transmits them to artificial "legs".

The invention is intended primarily for infirm people and patients who are recovering from injuries. It can also be used to work in a disaster area and during sports training.

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STMicroelectronics introduced the BlueNRG-2N Bluetooth 5.0 certified network processor with improved power consumption and support for the latest Bluetooth features that increase throughput and enhance data privacy and security (Figure 1).

The BlueNRG-2N network coprocessor is pre-programmed and ready to be connected to an external microcontroller for Bluetooth communication. It can be applied in smart medical handheld devices, PC peripherals, remote controls, lighting, industrial and home automation.

The network processor allows you to optimize the choice of microcontroller in accordance with the requirements of a particular product. The latest Bluetooth enhancements introduced with the BlueNRG-2N include support for Data Length Extension, which speeds up over-the-air (OTA) firmware updates by up to 2,5x and increases data rates up to 700 kbps at the application layer. In addition, with Bluetooth LE Privacy 1.2 support, the BlueNRG-2N frequently changes address without host processor intervention to prevent unwanted snooping with minimal impact on system power consumption.

The BlueNRG-2N is programmed with a digitally signed Bluetooth LE stack, reducing manufacturing costs while maintaining the flexibility for OTA upgrades. Built-in Firmware Image Authentication technology enhances cyber security by always checking the stack before launch, allowing only signed firmware images to run. Power consumption is lower than previous BlueNRG generations, with a standby current of just 900nA (with the BLE stack running). At the same time, the device maintains stable and reliable operation of the radio channel thanks to programmable output power up to +8dBm and link budget up to 96dB.

Key features:

certified Bluetooth 5.0;
current consumption in sleep mode up to 900 nA;
current consumption TX 6,8 mA (@ -2 dBm, 3,0 V);
RX current consumption 6,2mA (@ 3,0V);
power up to +8 dBm at the antenna connector;
excellent communication channel budget up to 96 dB;
built-in downconverter + LDO;
guaranteed communication between multiple masters and multiple slaves;
simultaneous work of two masters and up to six subordinates;
support for up to eight simultaneous connections;
increased transmission speed (up to 700 kbps at the application layer);
the speed of updating the firmware by radio is increased by 2,5 times.

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