Power supply control system, power supply control device and method
To provide a system for controlling power supplies in a device including batteries 12, 13 , and 14 by wireless signals with high reliability. The system includes the batteries 12, 13, 14 , a power supply control device 1 supplied with power from the batteries 12, 13 , and 14 , and a controller 15 for making wireless communication with the power supply control device 1 . The power supply control device 1 includes a startup unit 37 for receiving a wireless startup signal transmitted from the controller 15 and controlling power supplying from the batteries to the power supply control device, and a communication unit 10 for making wireless communication with the controller. While the startup unit 37 is receiving the wireless startup signal, wireless communication is made by the communication unit 10.
1. A power supply control system comprising:
one or more power supply control devices supplied with power from a battery; and
a controller for wirelessly communicating signals with the power supply control devices,
wherein each of the power supply control devices includes
a startup unit for receiving a wireless startup signal transmitted from the controller, and supplying power from the battery to a communication unit while receiving the wireless startup signal, and
the communication unit for, while being supplied with power from the battery, receiving a monitoring control instruction from the controller, acquiring a monitoring control result for the battery, and transmitting the monitoring control result to the controller as needed in response to the monitoring control instruction,
wherein the startup unit includes
a wireless signal detection unit for detecting a signal intensity of a received wireless signal, and
a startup signal determination unit for determining a data pattern of a received wireless signal,
wherein the startup signal determination unit is supplied with power from the battery while the wireless signal detection unit detects a wireless startup signal with a predetermined signal intensity or more, and
the communication unit is supplied with power from the battery while the startup signal determination unit determines that the data pattern of a wireless signal matches with a predetermined data pattern.
2. The power supply control system according to claim 1 , further comprising:
a monitoring control unit supplied with power from the battery while receiving the wireless startup signal or while the communication unit is operating, and directed for monitoring and/or controlling the battery in response to the monitoring control instruction received from the controller to the communication unit, and outputting the monitoring control result to the communication unit.
3. The power supply control system according to claim 1 ,
wherein the wireless signal detection unit is supplied with power from a different power source from the battery cell, or
the wireless signal detection unit is supplied with power obtained by rectifying the wireless startup signal.
4. The power supply control system according to claim 1 ,
wherein the communication unit keeps being supplied with power from the battery while operating as instructed in response to the monitoring control instruction from the controller.
5. The power supply control system according to claim 1 ,
wherein the controller receives the monitoring control result from the power supply control device, and then transmits a wireless stop signal, and
when receiving the wireless stop signal from the controller, the communication unit transmits a delivery confirmation signal to the controller and the controller stops power supplying from the battery.
6. The power supply control system according to claim 1 ,
wherein, when wireless communication with the controller is interrupted for a predetermined period of time, the controller stops power supplying from the battery to the communication unit.
7. The power supply control system according to claim 6 ,
wherein after the communication unit starts to operate while the startup unit is detecting a wireless startup signal, the communication unit receives a monitoring control instruction signal from the controller, and transmits a monitoring control result signal to the controller, and when not being able to receive a monitoring control instruction signal again within a predetermined period of time, the communication unit outputs a power supply control instruction signal, and causes the startup unit to stop power supplying to the communication unit and monitoring control on the battery, and
after a predetermined period of time elapses since reception of the power supply control instruction signal, the startup unit returns to the wireless startup signal determination operation.
8. The power supply control system according to claim 1 ,
wherein when wireless communication with the controller has predetermined communication quality or less, or a predetermined failure probability or more, the controller stops power supplying from the battery to the communication unit.
9. The power supply control system according to claim 8 ,
wherein when communication quality lowers below a predetermined threshold, the communication unit outputs a power supply control instruction signal, and causes the startup unit to stop power supplying to the communication unit and monitoring control on the battery, and
after a predetermined period of time elapses since reception of the power supply control instruction signal, the startup unit changes the data pattern used for startup determination to a different data pattern.
10. The power supply control system according to claim 9 ,
wherein when not being able to receive a monitoring control result for a predetermined period of time or receiving an instruction of changing a data pattern from other device, the controller transmits a wireless startup signal including a different data pattern.
11. The power supply control system according to claim 1 ,
wherein the communication unit records a received monitoring control instruction in a memory, and performs monitoring control based on the recorded monitoring control instruction at a predetermined timing or a timing instructed by the monitoring control instruction, and/or records a monitoring control result in the memory, and transmits the monitoring control result to the controller at a predetermined timing or a timing instructed by the monitoring control instruction.
12. The power supply control system according to claim 1 ,
wherein when the power supply control devices are present, any one or some of a wireless startup signal, a monitoring control instruction, and a monitoring control result are common in all the power supply control devices, a predetermined data pattern is common in some of the power supply control devices, or a predetermined data pattern is individual to each of the power supply control devices.
13. A power supply control device comprising:
a battery;
a communication unit; and
a startup unit for receiving a wireless startup signal transmitted from an external controller, and supplying power from the battery to the communication unit while receiving the wireless startup signal; and
the communication unit for, while being supplied with power from the battery, receiving a monitoring control instruction from the external controller, acquiring a monitoring control result for the battery, and transmitting the monitoring control result to the external controller as needed in response to the monitoring control instruction,
wherein the startup unit includes
a wireless signal detection unit for detecting a signal intensity of a received wireless signal, and
a startup signal determination unit for determining a data pattern of a received wireless signal,
wherein the startup signal determination unit is supplied with power from the battery while the wireless signal detection unit detects a wireless startup signal with a predetermined signal intensity or more, and
the communication unit is supplied with power from the battery while the startup signal determination unit determines that the data pattern of a wireless signal matches with a predetermined data pattern.
14. A power supply control method in a power supply control system,
wherein the power supply control system includes
one or more power supply control devices supplied with power from a battery, and a controller for wirelessly communicating signals with the power supply control devices, the method comprising:
receiving, by each of the power supply control devices, a wireless startup signal transmitted from the controller,
supplying power from the battery to a communication unit while receiving the wireless startup signal, and
while being supplied with power from the battery, receiving, by the communication unit, a monitoring control instruction from the controller, acquiring a monitoring control result for the battery, and transmitting a monitoring control result to the controller as needed in response to the monitoring control instruction,
detecting a signal intensity of the received wireless startup signal, and
determining, by a startup signal determination unit, a data pattern of the received wireless startup signal,
wherein the startup signal determination unit is supplied with power from the battery while the wireless signal detection unit detects a wireless startup signal with a predetermined signal intensity or more, and
wherein the communication unit is supplied with power from the battery while the startup signal determination unit determines that the data pattern of the received wireless startup signal matches with a predetermined data pattern.