CN212749225U - Indoor positioning label integrated with dual-mode SOC (System on chip) - Google Patents
Indoor positioning label integrated with dual-mode SOC (System on chip) Download PDFInfo
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- CN212749225U CN212749225U CN202021093638.1U CN202021093638U CN212749225U CN 212749225 U CN212749225 U CN 212749225U CN 202021093638 U CN202021093638 U CN 202021093638U CN 212749225 U CN212749225 U CN 212749225U
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Abstract
The utility model discloses an indoor location label of integrated bimodulus SOC, a serial communication port, indoor location label includes: the system comprises a Micro Control Unit (MCU), a first physical layer and a second physical layer; wherein the MCU implements control of the first physical layer and the second physical layer via a communication path.
Description
Technical Field
The utility model relates to a wireless radio frequency technology field especially relates to an indoor location label of integrated dual-mode System on Chip (SOC, System on Chip).
Background
Indoor positioning may be used to locate objects or people within a facility and may be used for various facility systems. For example, indoor positioning may be used for security systems, wayfinding, and/or occupancy detection, among others. Indoor location may be particularly useful, for example, in a Global Positioning System (GPS) denied facility or building. Currently, in a conventional indoor positioning scheme, an Ultra Wide Band (UWB) scheme, a Bluetooth Low Energy (BLE) scheme, or a dual-mode scheme integrating the above two schemes is generally adopted. However, in the above schemes, in the implementation process of the UWB scheme, a separate Micro Control Unit (MCU) is externally connected to an indoor positioning tag already containing a UWB chip to implement control of the UWB chip, and the above implementation scheme requires two chips to be arranged on a circuit board, which increases the manufacturing cost, the circuit layout area, and the product power consumption, and is not suitable for the development trend of the current miniaturized device; however, for the current conventional dual-mode scheme, in the implementation process, an indoor positioning tag of a UWB chip plus a BLE SOC is usually adopted, wherein the inside of the BLE SOC includes an MCU, and the UWB chip is controlled by using the MCU inside the BLE SOC.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the utility model provides an it is expected to provide an indoor location label of integrated bimodulus SOC, improves the integrated level of indoor location label, reduction in production cost and consumption. And the development of a new application scheme aiming at the indoor positioning label is facilitated, and the secondary development cost is reduced.
The technical scheme of the utility model is realized like this:
the embodiment of the utility model discloses indoor location label of integrated bimodulus SOC, indoor location label includes: the system comprises a Micro Control Unit (MCU), a first physical layer and a second physical layer; wherein the MCU implements control of the first physical layer and the second physical layer via a communication path.
In some examples, the first physical layer is a UWB physical layer and the second physical layer is a BLE physical layer;
or, the first physical layer is a BLE physical layer, and the second physical layer is a UWB physical layer.
In some examples, the MCU is configured to:
initializing the UWB physical layer and the BLE physical layer based on default parameters when the indoor positioning tag is powered on and stable; the UWB physical layer after initialization is in a dormant state, and the BLE physical layer after initialization is in a monitoring state;
when the BLE physical layer monitors that a positioning base station exists nearby, the BLE physical layer is controlled to detect a positioning base station signal received at the current position, and the positioning base station for accurate positioning is obtained through screening based on the detected signal intensity of the positioning base station;
and awakening the UWB physical layer, and controlling the UWB physical layer to carry out accurate positioning according to the positioning base station for accurate positioning.
In some examples, the MCU is further configured to: and after the accurate positioning is finished, controlling the UWB physical layer to enter a sleep state again, and controlling the BLE physical layer to enter a monitoring state again.
In some examples, the BLE physical layer is configured to connect with an external terminal device for configuration and over-the-air on-line OTA upgrade of the indoor positioning tag.
In some examples, the communication path includes: system bus or control line.
In some examples, the system bus comprises an AHB bus; the control line includes a control line based on SPI protocol or I2C protocol.
In some examples, the indoor positioning tag further comprises a power management module comprising a wired adaptation zone, a wireless reception zone, a charging zone, and a battery pack, wherein the charging zone is configured to charge the battery pack based on one of the wired adaptation zone and the wireless reception zone.
In some examples, the wired adaptation region includes a first protocol controller; the wireless receiving area comprises a wireless receiving IC and a second protocol controller; the charging zone comprises a third protocol controller, an AP and a main charger; the third protocol controller is respectively connected with the constant current CC ports of the first protocol controller and the second protocol controller; the wireless receiving IC and a VBUS port of the wired adapting area are connected with the main charger; the main charger is connected with the battery pack, and the D + and D-ports of the first protocol controller are connected with the main charger; the AP is connected to the third protocol controller and the main charger via an I2C bus.
In some examples, the charging region further comprises an auxiliary charger; the wireless receiving IC and a VBUS port of the wired adapting area are connected with the auxiliary charger; the AP is connected with the auxiliary charger through an I2C bus; the auxiliary charger is connected with the battery pack.
The embodiment of the utility model provides an integrated bimodulus SOC's indoor location label to indoor location label 10, realizes the control to first physical layer 102 and second physical layer 103 through MCU101 to can improve indoor location label 10's integrated level, reduction in production cost and consumption with two kinds of mode and MCU integration on an SOC. And the development of a new application scheme aiming at the indoor positioning tag 10 is facilitated, the secondary development cost is reduced, and the simplification of the solution is realized.
Drawings
Fig. 1 is a schematic structural diagram of an indoor positioning tag integrated with a dual-mode SOC according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another indoor positioning tag integrated with a dual-mode SOC according to an embodiment of the present invention;
fig. 3 is a schematic view of a work flow of an indoor positioning tag integrated with a dual-mode SOC according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a power management module according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of another power management module according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of another power management module according to an embodiment of the present invention.
Detailed Description
In order to illustrate embodiments of the present invention or technical solutions in the prior art more clearly, the following description will be made in conjunction with the accompanying drawings in embodiments of the present invention to describe the technical solutions in the embodiments of the present invention clearly and completely, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1, a structure of an indoor positioning tag 10 integrated with a dual-mode SOC according to an embodiment of the present invention is shown, where the structure may include a micro control unit MCU101, a first physical layer 102, and a second physical layer 103; wherein the MCU101 implements control of the first physical layer 102 and the second physical layer 103 via a communication path 104.
It should be noted that the first physical layer 102 and the second physical layer 103 respectively represent physical layers with two different operating modes, and for the indoor positioning tag 10, the first physical layer 102 and the second physical layer 103 are controlled by the MCU101, so that the two operating modes and the MCU can be integrated on one SOC, the integration level of the indoor positioning tag 10 is improved, and the production cost and the power consumption are reduced. And the development of a new application scheme aiming at the indoor positioning tag 10 is facilitated, the secondary development cost is reduced, and the simplification of the solution is realized.
For the solution shown in fig. 1, for the indoor positioning tag 10, a UWB or BLE solution is generally adopted, and therefore, in some embodiments, the first physical layer is a UWB physical layer, and the second physical layer is a BLE physical layer; or, the first physical layer is a BLE physical layer, and the second physical layer is a UWB physical layer. At this time, the MCU101 may be programmed to implement UWB protocol and other higher layer protocol content in BLE protocol except for the physical layer.
For the above embodiments, in this embodiment, the first physical layer 102 is a UWB physical layer, and the second physical layer 103 is a BLE physical layer, which is taken as an example for explanation, and it can be understood that, when the first physical layer is a BLE physical layer, and the second physical layer is a UWB physical layer, a person skilled in the art may also implement or utilize the explained scheme, and details are not described in this embodiment.
Based on the indoor positioning tag 10 structure described in fig. 1, since the MCU101 can implement high-level protocol content, in some embodiments, the MCU101 is configured to:
when the indoor positioning tag 10 is powered on and stable, initializing the UWB physical layer and the BLE physical layer based on default parameters; the UWB physical layer after initialization is in a dormant state, and the BLE physical layer after initialization is in a monitoring state;
when the BLE physical layer monitors that a positioning base station exists nearby, the BLE physical layer is controlled to detect a positioning base station signal received at the current position, and the positioning base station for accurate positioning is obtained through screening based on the detected signal intensity of the positioning base station;
and awakening the UWB physical layer, and controlling the UWB physical layer to carry out accurate positioning according to the positioning base station for accurate positioning.
Furthermore, in some examples, after completing the above-mentioned accurate positioning, the MCU101 is further configured to: and controlling the UWB physical layer to enter the sleep state again, and controlling the BLE physical layer to enter the monitoring state again.
In other examples, The BLE physical layer is configured to interface with an external terminal device to perform configuration and Over The Air (OTA) upgrade of The indoor location tag.
Based on the indoor positioning tag 10 structure described in fig. 1, in some embodiments, the communication path 104 may include: system bus or control line. For example, the system bus comprises an AHB bus; the control line includes a control line based on SPI protocol or I2C protocol.
Therefore, for the indoor positioning tag 10 integrated with the dual-mode SOC, the UWB physical layer and the BLE physical layer may be controlled by the MCU101 through a program, based on the structure shown in fig. 1, in a specific implementation process, the MCU101 controls the UWB physical layer and the BLE physical layer to be implemented through an architecture as shown in fig. 2, referring to fig. 2, besides the MCU101, the UWB physical layer 202 (an example of the first physical layer 102 in fig. 1), the BLE physical layer 203 (an example of the second physical layer 103 in fig. 1), and the system bus 204 (an example of the communication path 104 in fig. 1), the UWB physical layer 202 and the BLE physical layer 203 each externally connect a corresponding antenna, and include a FLASH 205, a ROM 206, a RAM 207, an encryption algorithm 208, a bus converter 209 capable of connecting with various application interfaces 210, an internal clock, an external crystal oscillator, a power management module, and the like to form a peripheral circuit 211, it should be understood that the architecture shown in fig. 2 is only for illustrating exemplary hardware guarantee conditions required in the implementation process of the technical solution shown in fig. 1, and is not a specific limitation to the technical solution shown in fig. 1.
Based on the architecture shown in fig. 2, for the foregoing example, the process that the MCU101 is configured to control the UWB physical layer 202 and the BLE physical layer 203 to achieve accurate positioning may specifically include, in some examples: when the power management module in the peripheral circuit 211 detects that the indoor positioning tag 10 is powered on and stable (may become powered on), the MCU101 initializes the UWB physical layer 202 and the BLE physical layer 203 based on default parameters pre-stored in the ROM 206; wherein, the UWB physical layer 202 after initialization is in a sleep state, and the BLE physical layer 203 after initialization is in a monitoring state; when the BLE physical layer 203 monitors that a positioning base station exists nearby, which indicates that the indoor positioning tag 10 is close to the positioning base station, the MCU101 controls the BLE physical layer to detect a positioning base station signal received at the current position, where the received positioning base station signal may be temporarily stored in the RAM 207, and obtains a positioning base station for accurate positioning based on the detected signal strength (such as RSSI) of the positioning base station, for example, the positioning base station identifier for accurate positioning is also temporarily stored in the RAM 207; after the screening is completed, the MCU101 wakes up the UWB physical layer 202, and controls the UWB physical layer 202 to perform accurate positioning according to the positioning base station for accurate positioning temporarily stored in the RAM, so as to obtain accurate positioning information of the position of the indoor positioning tag 10, and the accurate positioning information can be stored in the FLASH 205. It is understood that the signals or information may be encrypted by the encryption algorithm 208 before being stored in the FLASH 205, the ROM 206, and the RAM 207, and then stored, so as to improve the data security in the indoor positioning tag 10.
Furthermore, in some examples, after completing the above precise positioning procedure, the MCU101 will also control the UWB physical layer 202 to enter the sleep state again, and control the BLE physical layer 203 to enter the listening state again.
It should be noted that, the control instruction issued by the MCU101 in the process of controlling the UWB physical layer 202 and the BLE physical layer 203 and the transmission of data such as the base station signal received by the UWB physical layer 202 and the BLE physical layer 203 can be implemented through the system bus 204.
In addition, in other examples, the BLE physical layer 203 may also be connected to the application interface 210 through the bus converter 209, so as to enable the indoor positioning tag 10 to be connected to an external terminal device. The indoor positioning tag 10 is configured through The connected terminal device, and an Over The Air (OTA) upgrade process for The indoor positioning tag 10 is completed by using an external terminal device.
Based on the indoor positioning tag 10 architecture shown in fig. 1 and fig. 2, in the process of indoor positioning by the indoor positioning tag 10 integrated with the dual-mode SOC provided in this embodiment, the indoor positioning method flow shown in fig. 3 may be implemented, and the flow may include:
s301: when the indoor positioning tag is powered on, the MCU101 initializes the UWB physical layer 202 and the BLE physical layer 203;
in addition, according to the foregoing technical solution, the UWB physical layer 202 after initialization is in a sleep state, and the BLE physical layer 203 after initialization is in a listening state. It is understood that, since the average power consumption of BLE physical layer is lower than that of UWB physical layer in normal operation state, UWB physical layer 202 is in sleep state and BLE physical layer 203 is in listening state under the internal clock driving of peripheral circuit 211 for the purpose of reducing and saving power consumption.
S302: when the BLE physical layer 203 monitors that a positioning base station exists nearby, transmitting the monitored signal characteristics of the plurality of positioning base stations to the MCU 101;
in this embodiment, when the indoor positioning tag approaches the vicinity of the positioning base station, the BLE physical layer 203 can monitor the positioning base station existing nearby, and the Signal characteristic of the positioning base station may preferably be a Received Signal Strength Indication (RSSI).
S303: the MCU101 determines a positioning base station for accurate positioning from a plurality of monitored positioning base stations according to the signal characteristics;
s304: the MCU101 wakes up the UWB physical layer 202 and transmits an indication message for accurate positioning to the UWB physical layer 202;
it is to be understood that, in the indication message, information of the positioning base station for precise positioning, such as the positioning base station identity, etc., is included, so that the UWB physical layer 202 can use the information to complete precise positioning.
S305: the UWB physical layer 202 completes accurate positioning based on the indication message and transmits the accurate positioning data to the MCU 101;
it should be noted that, in general, 3 to 4 positioning base stations can achieve accurate positioning, and achieve accuracy of 10cm level. Therefore, in the present embodiment, the information of the positioning base station for accurate positioning included in the indication message may preferably be information of 3 to 4 positioning base stations. It will be appreciated that the UWB physical layer 202 may also transmit the accurate positioning data to the positioning base station and the background server via an uplink for position resolution, or directly implement local resolution.
S306: the MCU101 calculates and obtains current accurate positioning according to the accurate positioning data, and after the accurate positioning is finished, the operation goes to S307;
s307: the MCU101 respectively sends control instructions to the UWB physical layer 202 and the BLE physical layer 203;
the control instruction instructs UWB physical layer 202 to enter the sleep state again, and instructs BLE physical layer 203 to enter the listening state again under the driving of the low-power internal clock in external circuit 211.
Based on the foregoing technical solution, for the power management module in the peripheral circuit 211 in the indoor positioning tag 10 shown in fig. 2, referring to the charging circuit structure of the power management module 40 shown in fig. 4, the charging circuit structure may include: a wired adaptation zone 401, a wireless reception zone 402, a charging zone 403, and a battery pack 404, wherein the charging zone 403 is configured to charge the battery pack 404 based on one of the wired adaptation zone 401 and the wireless reception zone 402.
Based on the power management module 40 shown in fig. 4, after the technologies of wired charging and wireless charging are combined, the indoor positioning tag 10 can be conveniently charged anytime and anywhere. As the indoor positioning tag 10 is more and more suitable for consumer products, for example, the connection with the smart phone is also more and more compact, and the existing smart phone often supports reverse wireless charging, the power management module 40 shown in fig. 4 can also solve the requirement of charging the miniaturized indoor positioning tag anytime and anywhere.
Based on the solution shown in fig. 4, referring to fig. 5, the wired adaptation zone 401 includes a first protocol controller; the wireless receiving area 402 comprises a wireless receiving IC and a second protocol controller; the charging zone 403 includes a third protocol controller, an AP, and a main charger; the third protocol controller is respectively connected with the constant current CC ports of the first protocol controller and the second protocol controller; the wireless receiving IC and the VBUS port of the wired adapting area 401 are connected with the main charger; the main charger is connected with the battery pack, and the D + and D-ports of the first protocol controller are connected with the main charger; the AP is connected to the third protocol controller and the main charger via an I2C bus.
It should be noted that, referring to fig. 5, the main charger may be mainly implemented by a line Low DropOut regulator (line LDO) or a Buck converter (Buck) circuit.
Based on the solution shown in fig. 5, referring to fig. 6, the charging area 403 further includes an auxiliary charger; the wireless receiving IC and the VBUS port of the wired adapting area 401 are connected with the auxiliary charger; the AP is connected with the auxiliary charger through an I2C bus; the auxiliary charger is connected with the battery pack.
It can be understood that, for the auxiliary Charger, it is optional, and specifically, it may be a 2:1Switched capacitor Charger (Switched Cap Charger), and in addition, a 2:1Switched Cap Charger may also be added between the wireless receiving IC in the wireless receiving area 402 and the third protocol controller in the charging area 403 as needed, as shown by a dashed line in fig. 6.
For the charging circuit in the power management module 40, it should be noted that, in a normal condition, the battery pack 404 may be charged through the cable, and the charging may be performed by using the linear LDO or the switching DCDC; when the cable is not available, the wireless charging IC can be used for charging the tag, generally, the battery capacity of the tag is 300-500mAh, the common 15W wireless charging IC can be sufficiently used, and the temperature rise is not high. On the other hand, the existing mobile power supply with wireless charging supports the smart phone with reverse wireless charging, and even the vehicle-mounted wireless charging equipment is more and more, so that the application scene of the positioning tag integrating the wireless charging function is more and more clear.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. An indoor positioning tag integrated with a dual mode SOC, the indoor positioning tag comprising: the system comprises a Micro Control Unit (MCU), a first physical layer and a second physical layer; wherein the MCU implements control of the first physical layer and the second physical layer via a communication path;
wherein the first physical layer is a UWB physical layer and the second physical layer is a BLE physical layer; or, the first physical layer is a BLE physical layer, and the second physical layer is a UWB physical layer.
2. The indoor positioning tag of claim 1, wherein the MCU is configured to:
initializing the UWB physical layer and the BLE physical layer based on default parameters when the indoor positioning tag is powered on and stable; the UWB physical layer after initialization is in a dormant state, and the BLE physical layer after initialization is in a monitoring state;
when the BLE physical layer monitors that a positioning base station exists nearby, the BLE physical layer is controlled to detect a positioning base station signal received at the current position, and the positioning base station for accurate positioning is obtained through screening based on the detected signal intensity of the positioning base station;
and awakening the UWB physical layer, and controlling the UWB physical layer to carry out accurate positioning according to the positioning base station for accurate positioning.
3. The indoor positioning tag of claim 2, wherein the MCU is further configured to: and after the accurate positioning is finished, controlling the UWB physical layer to enter a sleep state again, and controlling the BLE physical layer to enter a monitoring state again.
4. The indoor positioning tag of claim 1, wherein the BLE physical layer is configured to connect with an external terminal device for configuration and over-the-air OTA upgrade of the indoor positioning tag.
5. The indoor positioning tag of claim 1, wherein the communication path comprises: system bus or control line.
6. The indoor positioning tag of claim 5, wherein the system bus comprises an AHB bus; the control line includes a control line based on SPI protocol or I2C protocol.
7. The indoor positioning tag of any one of claims 1 to 6, further comprising a power management module comprising a wired adaptation zone, a wireless reception zone, a charging zone, and a battery pack, wherein the charging zone is configured to charge the battery pack based on one of the wired adaptation zone and the wireless reception zone.
8. The indoor positioning tag of claim 7, wherein the wired adaptation zone comprises a first protocol controller; the wireless receiving area comprises a wireless receiving IC and a second protocol controller; the charging zone comprises a third protocol controller, an AP and a main charger; the third protocol controller is respectively connected with the constant current CC ports of the first protocol controller and the second protocol controller; the wireless receiving IC and a VBUS port of the wired adapting area are connected with the main charger; the main charger is connected with the battery pack, and the D + and D-ports of the first protocol controller are connected with the main charger; the AP is connected to the third protocol controller and the main charger via an I2C bus.
9. The indoor positioning tag of claim 8, wherein the charging zone further comprises a secondary charger; the wireless receiving IC and a VBUS port of the wired adapting area are connected with the auxiliary charger; the AP is connected with the auxiliary charger through an I2C bus; the auxiliary charger is connected with the battery pack.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024005651A1 (en) | 2022-06-29 | 2024-01-04 | ONiO AS | Monolithic combined transceiver |
| GB2620550A (en) * | 2022-06-29 | 2024-01-17 | ONiO AS | Monolithic combined transceiver |
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2020
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024005651A1 (en) | 2022-06-29 | 2024-01-04 | ONiO AS | Monolithic combined transceiver |
| GB2620550A (en) * | 2022-06-29 | 2024-01-17 | ONiO AS | Monolithic combined transceiver |
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