# US 2020/0288395 A1 · Radio-frequency wakeup for vehicle systems > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2020/0288395 A1 - Document ID: US20200288395A1 - Status: Published application - Kind: A1 - Application number: 16/294,312 - Filed: 2019-03-06 - Published: 2020-09-10 - Earliest claimed: 2019-03-06 - Assignees: Analog Devices International Unlimited Company - Applicants: Analog Devices International Unlimited Company - Inventors: Lance Robert Doherty; Shane O'Mahony; Philip P.E. Quinlan; Mark Alan Lemkin - Web page: https://patentgrep.com/patent/US20200288395A1 ## CPC - H04W 52/0229: {where the received signal is a wanted signal} - H04L 1/0003: {by switching between different modulation schemes} - H04W 52/028: {switching on or off only a part of the equipment circuit blocks} - Y02D 30/70: in wireless communication networks - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE ## Abstract A system and method for monitoring components of a vehicle includes a manager and a wireless node. The manager is positioned on the vehicle and configured to wirelessly transmit a wake signal in response to an event. The wireless node positioned to monitor a component of the vehicle and includes an antenna, a wakeup circuit, and a node transceiver. The wakeup circuit is connected to the antenna and configured to monitor for the wake signal, and the node transceiver is configured to perform wireless communication with the manager. The wakeup circuit is configured to power on the node transceiver upon receipt of the wake signal. ## Claims ### Claim 1 A system for monitoring components of a vehicle, the system comprising: a manager positioned on the vehicle and configured to wirelessly transmit a wake signal in response to an event; and a wireless node positioned to monitor a component of the vehicle, the wireless node comprising: a first antenna; a wakeup circuit connected to the first antenna and configured to monitor for the wake signal; and a node transceiver configured to perform wireless communication with the manager, wherein the wakeup circuit is configured to power on the node transceiver upon receipt of the wake signal. ### Claim 2 (depends on 1) The system of claim 1, wherein the wakeup circuit is a separate receiver from the node transceiver. ### Claim 3 (depends on 2) The system of claim 2, wherein the node transceiver is connected to the first antenna in parallel with the wakeup circuit. ### Claim 4 (depends on 1) The system of claim 1, further comprising a second antenna, wherein the node transceiver is connected to perform the wireless communication with the manager through the second antenna. ### Claim 5 (depends on 1) The system of claim 1, wherein the manager comprises: a manager transceiver configured to transmit data to the wireless node and receive data transmitted by the node transceiver; wherein the manager transceiver is also configured to transmit the wake signal for the wireless node. ### Claim 6 (depends on 5) The system of claim 5, wherein the manager transceiver is configured to transmit the wake signal using a first modulation scheme and transmit the data to the wireless node using a second modulation scheme different than the first modulation scheme. ### Claim 7 (depends on 1) The system of claim 1, wherein the manager comprises: a first manager transceiver configured to transmit the wake signal to the wireless node; and a second manager transceiver configured to transmit data to the wireless node and receive data transmitted by the node transceiver. ### Claim 8 (depends on 1) The system of claim 1, further comprising: a secondary manager positioned on the vehicle and configured to wirelessly communicate with the wireless node, wherein the secondary manager is configured to receive the wake signal and exit a sleep mode upon receipt of the wake signal. ### Claim 9 (depends on 1) The system of claim 1, wherein the vehicle is an automobile and the component is a battery module, and wherein the wireless node further comprises a sensor configured to sense a current through or a voltage across one or more cells of the battery module, and wherein the wireless node is configured to power on the sensor upon receipt of the wake signal. ### Claim 10 (depends on 1) The system of claim 1, wherein the wake signal is a wake packet that includes a security code, and wherein the wakeup receiver is configured to confirm an identity of the manager using the security code. ### Claim 11 A method of powering on a system for monitoring a component of a vehicle, the method comprising: transmitting, by a manager positioned on the vehicle, a wakeup signal in response to a vehicle event; receiving, by a wakeup circuit of a wireless node, the wakeup signal through an antenna connected to the wakeup circuit, wherein the wireless node is positioned to monitor the component of the vehicle; powering on, by the wakeup circuit, a node transceiver of the wireless node in response to receipt of the wakeup signal; and transmitting, by the node transceiver, data to the manager. ### Claim 12 (depends on 11) The method of claim 11, wherein the wakeup circuit is a wakeup receiver positioned on the wireless node and separate from the node transceiver. ### Claim 13 (depends on 11) The method of claim 11, wherein the wakeup circuit integrated with the node transceiver. ### Claim 14 (depends on 11) The method of claim 11, further comprising: receiving, by a secondary manager positioned on the vehicle, the wakeup signal; and exiting, by the secondary manager, a sleep mode upon receipt of the wakeup signal. ### Claim 15 (depends on 11) The method of claim 11, wherein the vehicle is an automobile and the component is a battery module, and wherein the method further comprises: powering on, by the wakeup circuit, a sensor of the wireless node in response to receipt of the wakeup signal; and sensing, by the sensor, a current through or a voltage across one or more cells of the battery module. ### Claim 16 (depends on 15) The method of claim 15, wherein transmitting, by the manager positioned on the vehicle, the wakeup signal in response to the vehicle event comprises transmitting the wakeup signal in response to a user start command for the automobile. ### Claim 17 (depends on 11) The method of claim 11, wherein the method further comprises monitoring, by the wakeup receiver, for the wakeup signal by duty cycling a receiver power of the wakeup receiver. ### Claim 18 (depends on 11) The method of claim 11, wherein the wakeup signal is a wakeup packet that includes security data, and wherein receiving, by the wakeup receiver of the wireless node, the wakeup signal comprises confirming an identity of the manager using the security data. ### Claim 19 A system for wirelessly monitoring a component of a vehicle, the system comprising: a first manager positioned on the vehicle and configured to wirelessly transmit at least one wakeup packet in response to a vehicle event; a plurality of wireless nodes each positioned to monitor a component of the vehicle, each wireless node comprising: an antenna; an radio-frequency (RF) wakeup circuit connected to the antenna and configured to monitor received radio-frequency energy for the at least one wakeup packet; and a node transceiver configured to perform wireless communication with the manager, wherein the RF wakeup circuit is configured to power on the node transceiver upon receipt of the wakeup packet. ### Claim 20 (depends on 19) The system of claim 19, further comprising: a second manager positioned on the vehicle and configured to communicate wirelessly with the plurality of wireless nodes, wherein the second manager operates in a low power mode prior to the vehicle event; wherein the second manager is configured to monitor for the at least one wakeup packet and exit the low power mode upon receipt of the at least one wakeup packet.