4 technical characteristics
- Claudio Menegusso
- Caio Miyazaki (Deactivated)
4.1 general characteristics
4.1.1 Sensor BcSs-PICNIW-1000
Table 4.1.1 Sensor Technical Specifications
Sensor | Value |
|---|---|
Supply Voltage | 3.7 Vdc |
Power 1 | Average: 0.120W | Maximum: 0.6 W |
Dimensions (H x W x D) | 75 x 51 x 27 mm |
Weight | 88g |
1 Estimated average power considering the fully charged internal battery and average component consumption. Maximum power considered with the internal battery fully discharged.
4.1.2 Sensor BcSs-PICNIW-2000
Table 4.1.2-1 Sensor Technical Specifications
Sensor | Valor |
|---|---|
Supply Voltage | 3.7 Vdc |
Power 1 | Média: 0.120W | Máxima: 0.6 W |
Dimensions (H x W x D) | 50 x 35 x 30 mm |
Weight | 64g |
1 Estimated average power considering the fully charged internal battery and average component consumption. Maximum power considered with the internal battery fully discharged.
4.1.3 Receiver BcAc-DG-1000
Table 4.1.3-1 Receiver technical characteristics
Dongle | Value |
|---|---|
Supply Voltage | 4 - 8 Vdc |
Power 2 | Average: 0.038W | Maximum: 0.135 W |
Dimensions (H x W x D) | 94 x 17.5 x 15 mm |
Weight | 57.5g |
2 Estimated average and maximum power considering the monitor’s 5 V supply voltage.
4.2 environmental
Table 4.2.1 environmental specification
Item | Condition | Range |
|---|---|---|
Temperature range | Operational 3 | -4 °F to 140 °F 32 °F to 95 °F 4 |
In operation while charging the battery | 32 °F to 113 °F 32 °F to 113 °F 4 | |
Storage | 14 °F to 113 °F 32 °F to 104 °F 4 | |
Humidity range | Operational | 15% to 80% |
Storage | 15% to 85% | |
Atmospheric pressure range | Operational | 525 mm Hg to 795 mmHg |
Storage | 525 mm Hg to 795 mmHg | |
3 Considering the use of the system without the battery being charged and without the use of the support cart, please refer to the respective temperatures listed in the table. 4Condition for sensor BcSs-PICNIW-2000 ATTENTION - If the BcSs-PICW-2000 sensor model is stored in locations of up to 40 ºC, it is recommended that the sensor be used in a location with a temperature within the operating range and wait until the sensor cools down. If the operating environment is at 20 ºC, the sensor takes approximately 6 minutes to cool down and reach the operating temperature (35 ºC). | ||
4.3 connectivity
The wireless system uses radio frequency services to perform its functionalities. A brief description of the functionalities performed by the system and the Radio Frequency services required are summarized in the table below.
Table 4.3.1 Wireless Functionalities
Functionality | RF service |
|---|---|
Data sending from sensor to App | Bluetooth |
Bluetooth device pairing | Bluetooth |
Sending data from sensor to receiver | Bluetooth |
App account Login | Wifi / GPRS / EDGE / 3G / HSPA/HSPA+ / 4G / Other internet connection |
Data transmission to cloud and report generation | Wifi / GPRS / EDGE / 3G / HSPA/HSPA+ / 4G / Other internet connection |
Brain4care Wireless System uses Bluetooth Low Energy technology to communicate with the wireless sensor, receiver and mobile device with brain4care application.
The Bluetooth connection in the wireless sensor and receiver has the following specifications:
Table 4.3.2 Technical characteristics of sensor
Bluetooth | |
|---|---|
Bluetooth version | Bluetooth 5 low energy, Concurrent Central & Peripheral, 2M LE PHY, 1M LE PHY, Advertising Extensions |
Security | brain4care proprietary protocol - Auto refuse third part connections |
LE connections | Concurrent central, observer, peripheral, and broadcaster roles allowing concurrent connections between 1 sensor and a receiver and b4c app |
Radio | |
Frequency | 2.360 GHz to 2.500 GHz |
Modulations | GFSK at 1 Mbps, 2 Mbps data rates |
Transmit power | +4 dBm maximum |
Receiver sensitivity | –96 dBm (Bluetooth low energy mode) |
The wireless Quality of Service is continuously monitored by B4C app in order to guarantee the required communication performance. If a minimum quality is not achieved, data loss may occur during transmission and the user is warned in the app. If it occurs, bring the sensor closer to the mobile device and check if the minimum quality has been achieved. Also, verify the existence of other wireless devices in the same room and check if the recommended separation distances described at Table 3-3 are maintained. In the event of lost network connection, user interaction may be required to reconnect. In accordance with AAMI TIR69 Risk Management of Radio-frequency Wireless Coexistence for Medical Devices and Systems, the B4C System was not required to undergo wireless coexistence testing.
The B4C application requires internet connection to login, send patient monitoring sessions data to the cloud and to receive the ICP reports. Any technology available on the mobile device that can provide internet connection (typically wifi 802.11 or LTE network) can be used. It is recommended that the mobile device should be used only in secured and encrypted networks.
4.4 batteries
4.4.1 Internal Battery of BcSs-PICNIW-1000 sensor
The sensor has an internal Li-Ion, 3.7 Vdc, 240mAh battery, with a recharge time of approximately three hours and a discharge of approximately five hours, allowing the external battery to be charged alone and without pausing monitoring.
WARNING - Do not expose the sensor to heat sources. Excessive temperature can cause leaks and excessive heat can cause physical injury.
Table 4.4.1 Internal battery technical characteristics
Internal Battery | Value |
|---|---|
Rated Voltage | 3.7 V |
Max Loading Voltage | 4.2 V |
Capacity | 240 mAh |
Composition | Lithium ion |
Max charging current | 120 mA |
Max discharge current | 240 mA |
ATTENTION - Only use Brain4care authorized accessories and parts
4.4.2 External Battery of BcSs-PICNIW-1000 sensor
The sensor is powered by a removable external battery, which is also responsible for recharging the internal battery. Battery composition is Li-Ion, 3.7 Vdc, 1000mAh. The sensor allows for patient transport both inside and outside the hospital.
WARNING - Do not expose the sensor to heat sources. Excessive temperature can cause leaks and excessive heat can cause physical injury.
Table 4.4.2 External battery technical characteristics
External Battery | Value |
|---|---|
Rated Voltage | 3.7 V |
Max Loading Voltage | 4.2 V |
Capacity | 1000 mAh |
Composition | Lithium ion |
Max charging current | 1000 mA |
Max discharge current | 2000 mA |
4.4.3 Internal Battery of BcSs-PICNIW-2000 sensor
The sensor has an internal Li-Ion, 3.7 Vdc, 350mAh battery, with a recharge time of approximately two hours and a discharge of approximately ten hours, monitoring with the sensor is not possible while the battery is being charged.
Table 4.4.3 Internal battery technical characteristics
Internal Battery | Value |
|---|---|
Rated Voltage | 3.7 V |
Max Loading Voltage | 4.2 V |
Capacity | 350 mAh |
Composition | Lithium ion |
Max charging current | 120 mA |
Max discharge current | 240 mA |
4.5 Sensor chargers
4.5.1 External battery charger of BcSs-PICNIW-1000 sensor
The B4C external battery charger has the following characteristics:
Table 4.5.1 - External battery charger settings
Parameter | Specification (typical) |
Battery voltage regulation | 4.2 V |
Current during fast charge | 0.979 A |
Pre-charge to fast-charge transition threshold | 3 V |
Termination current | 96.8 mA |
Timers | Pre-charge: 1800s Safety timer: 18000s |
Battery temperature regulation | Charging suspension: 45°C Charging resumption: 40°C |
4.5.2 Charger of BcSs-PICNIW-2000 sensor
The B4C external battery charger has the following characteristics:
Table 4.5.2 - External battery charger settings
Parameter | Specification (typical) |
Charger type | Wireless - Qi |
Type of conector | USB-C |
Maximum power charge | 15 W |
Transmission frequency | 115-205 kHz |
Input | 5V |
Operation temperature | 0ºC até 35ºC |
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