CN117527598B - Sensor communication switching device and system - Google Patents
Sensor communication switching device and system Download PDFInfo
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- CN117527598B CN117527598B CN202410015538.3A CN202410015538A CN117527598B CN 117527598 B CN117527598 B CN 117527598B CN 202410015538 A CN202410015538 A CN 202410015538A CN 117527598 B CN117527598 B CN 117527598B
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/12—Discovery or management of network topologies
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The embodiment of the invention provides a sensor communication switching device and a system, which relate to the technical field of communication, wherein the sensor communication switching device comprises a main control unit, a switching unit, a power supply unit and a sensor communication unit; the sensor communication unit comprises a first communication module and a second communication module; the first communication module and the second communication module are both connected with the switching unit; the switching unit is also connected with the main control unit and the power supply unit; the switching unit is used for adjusting the link state of the first communication module according to the control signal of the main control unit so that the first communication module and the second communication unit form different sensor communication states under different link states. The application can provide a switching mode without changing external hardware or adjusting external wiring, so as to be matched with different communication topology schemes, adjust the communication topology schemes from various aspects such as a working power supply, a communication circuit and the like, and provide a more stable communication topology scheme which meets various requirements.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a sensor communication switching device and a sensor communication switching system.
Background
With the increasing popularity of automotive intellectualization, automatic parking assist systems are one of the most applied functions in real vehicle use. In the automatic parking auxiliary system, the core component is an ultrasonic sensor, and the sensor can detect obstacles by utilizing ultrasonic waves, so that the automatic parking function of a vehicle can be realized by combining images shot by a vehicle-mounted camera.
However, in the prior art, the sensor mostly has a single topology structure, which is not suitable for different clients, so a sensor communication device that does not need to replace external hardware or adjust external wiring is needed.
Disclosure of Invention
The invention aims at providing a sensor communication switching device and a system, which can provide a switching mode without changing external hardware or adjusting external wiring, can be matched with different communication topology schemes, can be adjusted from various aspects such as a working power supply, a communication line and the like, and provides a more stable communication topology scheme meeting various requirements.
Embodiments of the invention may be implemented as follows:
in a first aspect, a sensor communication switching device includes a main control unit, a switching unit, a power supply unit, and a sensor communication unit; the sensor communication unit comprises a first communication module and a second communication module; the first communication module and the second communication module are connected with the switching unit; the switching unit is also connected with the main control unit and the power supply unit;
the switching unit is used for adjusting the link state of the first communication module according to the control signal of the main control unit so that the first communication module and the second communication unit form different sensor communication states in different link states;
when the first communication module is in a first sensor communication state, the first communication module and the second communication module form an interconnected communication link through the switching unit;
when the first sensor is in a second sensor communication state, the first communication module and the second communication module form independent communication links through the switching unit.
Further, the switching unit comprises a communication switching module and a power supply switching module;
the communication switching module is respectively connected with the main control unit, the first communication module and the second communication module; the communication switching module is used for adjusting the link states of the first communication module and the second communication module through the control signal of the main control unit;
the power supply switching module is respectively connected with the main control unit, the power supply unit, the first communication module and the second communication module; the power supply switching module is used for adjusting the power supply unit to be in a power supply state of the first communication module and the second communication module according to the control signal of the main control unit.
Further, the power supply unit comprises a first power supply and a second power supply; the first power supply and the second power supply are connected with the power supply switching module; the second power supply is also connected with the second communication module;
when the first sensor is in a communication state, the second power supply supplies power to the first communication module and the second communication module respectively;
when the first power supply is in a second sensor communication state, the first power supply supplies power to the first communication module, and the second power supply supplies power to the second communication module.
Further, the first communication module comprises at least one first communication chip and at least one sensor; the second communication module comprises at least one second communication chip and at least one second sensor;
the communication ends of the first sensor and the first communication chip are connected with the communication switching module;
the second sensor is connected with the communication end of the second communication chip; the communication end of the second communication chip is also connected with the communication switching module;
when the first sensor is in a first sensor communication state, the first sensor is connected with the communication end of the second communication chip through the communication switching module, and is in a communication link with each second sensor in the same interconnection;
when the first sensor is in a second sensor communication state, the first sensor is connected with the communication end of the first communication chip through the communication switching module so as to form an independent communication link with the second communication module.
Further, the power supply switching module comprises a first switch component, a control end of the first switch component is connected with the main control unit, a static contact of the first switch component is connected with the power supply unit respectively, and a movable contact of the switch component is connected with the first communication module respectively.
Further, the communication switching module comprises a second switch component, and a control end of the second switch component is connected with the main control unit; each switch input end of the second switch assembly is respectively connected with the communication end of each first sensor, and each switch output end of the second switch assembly is respectively connected with the communication ends of the first communication chip and the second communication chip;
the second switch component adjusts the link states of the first communication module and the second communication module in different sensor communication states according to the control signal of the main control unit.
Further, the first power supply comprises a first power supply module and a second power supply module, the first switch assembly comprises at least two double-pole double-throw switch chips, and the second power supply is respectively connected with upper and lower fixed contacts on the same side of each double-pole double-throw switch chip; the first power supply module and the second power supply module are respectively connected with upper and lower fixed contacts at the other side of each double-pole double-throw switch chip; the movable contacts on each double-pole double-throw switch chip are respectively connected with the sensor in the first communication module;
the double-pole double-throw switch chip is used for adjusting the power supply unit to be in a power supply state of the first communication module and the second communication module according to the control signal of the main control unit.
Further, the second switch assembly comprises a multi-channel single-pole double-throw switch chip, an enabling end and a selection control end of the single-pole double-throw switch chip are connected with the main control unit, and each switch input end of the single-pole double-throw switch chip is connected with a communication end of each first sensor respectively; each switch output end of the single-pole double-throw switch chip is respectively connected with the communication ends of the first communication chip and the second communication chip;
the number of channels of the single-pole double-throw switch chip is the same as that of the first sensors.
Further, the second switch component is a four-channel single pole double throw switch chip.
In a second aspect, a sensor communication switching system includes the sensor communication switching device according to any one of the first aspects.
The beneficial effects of the embodiment of the invention include, for example:
the sensor communication switching device comprises a main control unit, a switching unit, a power supply unit and a sensor communication unit; the sensor communication unit comprises a first communication module and a second communication module; the first communication module and the second communication module are both connected with the switching unit; the switching unit is also connected with the main control unit and the power supply unit; the switching unit is used for adjusting the link state of the first communication module according to the control signal of the main control unit so that the first communication module and the second communication unit form different sensor communication states under different link states; when the first sensor is in a communication state, the first communication module and the second communication module form an interconnected communication link through the switching unit; when being in the second sensor communication state, first communication module, second communication module pass through the switching unit constructs independent communication link, and this application can provide one kind and need not to change the switching mode of external hardware or adjustment external connection to can cooperate different communication topology schemes, and adjust from many aspects such as working power supply and communication line, provide a more stable communication topology scheme that satisfies multiple demand.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a sensor communication switching device according to an embodiment of the present application;
FIG. 2 is a schematic diagram of one of communication topologies of a 12-channel sensor according to an embodiment of the present disclosure;
FIG. 3 is a second communication topology of a 12-channel sensor according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of a switching unit in an embodiment of the present application;
FIG. 5 is a schematic diagram of a sensor communication unit according to an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of a power supply unit in an embodiment of the present application;
FIG. 7 is a schematic structural diagram of a first switch assembly according to an embodiment of the present disclosure;
FIG. 8 is a schematic structural diagram of a second switch assembly according to an embodiment of the present disclosure;
fig. 9 is a schematic diagram of a connection structure based on a second switch assembly in an embodiment of the application.
Icon: 100-sensor communication switching device.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, if the terms "upper", "lower", "inner", "outer", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or the azimuth or the positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present invention and simplifying the description, and it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus it should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, if any, are used merely for distinguishing between descriptions and not for indicating or implying a relative importance.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
As described in the background art, in the prior art, as the automobile is more intelligent, the automatic parking assist system has more functions as an application scene in a real automobile, a plurality of ultrasonic sensors are required to be used to detect obstacles through ultrasonic waves, and as a core component of the automatic parking system, a sensor module conventionally used in the market includes an ultrasonic sensor chip and an ultrasonic sensor communication chip, so that the ultrasonic sensor chip is conducted through the ultrasonic sensor communication chip.
According to the inventor, the sensor module in practical application in the prior art usually adopts a single communication connection structure, and it can be understood that only a single communication structure is usually used in a parking system, namely, the direction point to be detected by the parking system matched with the single communication structure is used, if the sensor module needs to be reconfigured, the topology structure can only be readjusted, so that the industrial cost can be greatly increased, and the single communication topology structure cannot be matched with the single communication structure to meet different customer demands.
Based on this, this application can provide a sensor communication auto-change over device and system, based on one kind need not to change the switching mode of external hardware or adjustment external connection, can cooperate different communication topology schemes to adjust from many aspects such as working power supply and communication line, provide a more stable communication topology scheme that satisfies multiple demand.
Referring to fig. 1, a sensor communication switching device 100 includes a main control unit, a switching unit, a power supply unit, and a sensor communication unit; the sensor communication unit comprises a first communication module and a second communication module; the first communication module and the second communication module are connected with the switching unit; the switching unit is also connected with the main control unit and the power supply unit;
the switching unit is used for adjusting the link state of the first communication module according to the control signal of the main control unit so that the first communication module and the second communication unit form different sensor communication states under different link states;
when the first sensor is in a communication state, the first communication module and the second communication module form an interconnected communication link through the switching unit;
when the first sensor is in the second sensor communication state, the first communication module and the second communication module form independent communication links through the switching unit.
In this embodiment of the present application, the first communication module adjusts the on/off state through the change-over switch in different sensor communication states, and forms different communication links with the second communication module.
In this embodiment, the switching unit is used to adjust the access communication links of different communication modules, and in a control manner of the main control unit, the power-on switching of the switching unit is implemented, and in an achievable embodiment, the main control unit adjusts the enabling end of the switching unit in a high-low level manner, for example, in a low-level state, so that the switching unit controls the conduction condition of the first communication module and the second communication module in the sensor communication unit to switch to the first sensor communication state; similarly, the switching unit can control the conduction condition of the first communication module and the second communication module in the sensor communication unit under the high-level state so as to switch to the second sensor communication state.
It should be noted that, in the embodiment of the present application, when the number of sensors in the sensor communication unit is fixed, the number of power supplies in the power supply unit is related to the number of communication chips in the sensor communication unit, and it is understood that the sensors are arranged in a matrix based on the number of power supplies and the number of communication chips. Namely, the number of the sensors is 12, when each sensor needs to be provided with three communication chips, 4 sensors are provided on each communication chip, and as each communication chip comprises two paths of communication ends, two power supplies can be required at the lowest; when each sensor needs to carry two communication chips, then 6 sensors can be carried on each communication chip, and as each communication chip comprises two communication ends, it can be understood that 6 sensors need to be carried on each communication chip, and as there are two communication ends, one can connect 3 sensors in series on each communication end, then three power supplies can be required at the lowest corresponding to the sensors connected in series on each communication end, the number of the power supplies is related to the links of the sensors, and the links can be understood as the number of the sensors connected on one communication port.
In the embodiment of the present application, please refer to fig. 2 and 3, a 266 communication topology and a 3444 communication topology are provided, wherein "266" means: the ultrasonic sensor system comprises 2 ultrasonic sensor communication chips, wherein the ultrasonic sensor communication chips can be E521.42 ultrasonic sensor communication chips, and each communication chip is respectively connected with 6 ultrasonic sensors USS; "3444" means: the ultrasonic sensor system comprises 3 ultrasonic sensor communication chips E521.42, and each communication chip is respectively connected with 4 ultrasonic sensors USS; wherein, each path of ultrasonic sensor USS is powered by different power supply USS-power respectively. It can be understood that in the above topology, the number of sensors is 12, and when each sensor is mounted with three communication chips, two power supplies are required; when two communication chips are mounted on each sensor, three power supplies are required, and the sensor communication switching device 100 provided in the embodiment of the present application is described in detail by taking the two communication topologies as an example.
Further, referring to fig. 4, the switching unit includes a communication switching module and a power switching module;
the communication switching module is respectively connected with the main control unit, the first communication module and the second communication module; the communication switching module is used for adjusting the link states of the first communication module and the second communication module through the control signal of the main control unit.
In one embodiment, the communication switching module is configured to adjust the communication link between the communication chip and the sensor in the sensor communication unit during the state switching process.
In this embodiment, referring to fig. 5, the first communication module includes at least one first communication chip and at least one first sensor; the second communication module comprises at least one second communication chip and at least one second sensor;
the communication ends of the first sensor and the first communication chip are connected with the communication switching module;
the second sensor is connected with the communication end of the second communication chip; the communication end of the second communication chip is also connected with the communication switching module;
when the first sensor is in a communication state, the first sensor is connected with a communication end of the second communication chip through the communication switching module and is in a same interconnection communication link with the second sensor;
when the first sensor is in the second sensor communication state, the first sensor is connected with the communication end of the first communication chip through the communication switching module so as to form an independent communication link with the second communication module.
As can be appreciated in conjunction with fig. 3, when there are 12 sensors, the first communication module may include a first communication chip and four first sensors, such as USS6, USS7, USS1, USS12, and the second communication module may include two second communication chips and eight second sensors, such as USS4, USS5, USS9, USS8, USS2, USS3, USS11, USS10.
The communication ports of the first communication chips are respectively connected with the output ends of the communication switching modules, and each first sensor is respectively connected with the input ends of the communication switching modules, so that the first communication chips on the first communication modules are connected with each first sensor through the communication switching modules, and the switching of the first sensors in the first communication modules is completed through the communication switching modules so as to control the access loops of the first sensors. It can be understood that, according to the input instruction of the main control unit, the communication switching module can form a link loop by the first sensor in the first communication module and the first communication chip of the first communication module; the first sensor in the first communication module and the second communication chip in the second communication module can also form a link loop. Similarly, the communication ports of the second communication chips are also connected with the output ends of the communication switching modules respectively, and each second sensor is directly connected with the communication ends of the second communication chips, wherein the arrangement of each second communication chip is symmetrically distributed because the number of each power supply in the power supply unit is related to the number of the communication chips in the sensor communication unit, so that the second sensors on the second communication modules and the second communication chips directly form a link circuit.
In the embodiment of the application, when the first sensor is in a communication state, the first sensor is connected with a communication end of the second communication chip through the communication switching module and is in a communication link with each second sensor in the same interconnection; when the first sensor is in the second sensor communication state, the first sensor is connected with the communication end of the first communication chip through the communication switching module so as to form an independent communication link with the second communication module. It can be understood that when there are 12 paths of sensors, when the structure is required to be converted from 266 to 3444, since the number of power supplies in the power supply unit is related to the number of communication chips in the sensor communication unit, then 2 communication chips need to be switched to 3 communication chips, and then a new path of power supply is required, that is, 3 paths of power supply are required to supply power to the above-mentioned switched 3444 structure, where the new path of power supply is understood as a first communication chip, the 12 paths of chips can form a communication link through the 3 communication chips, in this embodiment, the sensor corresponding to any path of power supply in the 266 communication structure can be used as the first sensor in the first communication module, and the input end of the communication switching module is connected to implement connection with the first communication chip through the communication switching module.
Similarly, if the 3444 structure is required to be adjusted to 266 structure, one communication chip may be selected as the first communication chip, the other communication chips are selected as the second communication chip, and then the sensor corresponding to the first communication chip is selected as the first sensor, so as to implement the above arrangement, and the links between the first communication chip, the second communication chip and the first sensor are implemented through the communication switch.
It should be noted that, in this application, the switching unit controls the conduction condition of the first communication module and the second communication module in the sensor communication unit, so that the sensor mounted on the first communication chip in the first communication module is directly connected with the second communication chip in the second communication module.
Further, the power supply switching module is respectively connected with the main control unit, the power supply unit, the first communication module and the second communication module; the power supply switching module is used for adjusting the power supply unit to be in a power supply state of the first communication module and the second communication module according to the control signal of the main control unit.
In this embodiment, please refer to fig. 6, the power supply unit includes a first power supply and a second power supply; the first power supply and the second power supply are both connected with the power supply switching module; the second power supply is also connected with the second communication module. When the first sensor is in a communication state, the second power supply supplies power to the first communication module and the second communication module respectively; when the first sensor is in the second sensor communication state, the first power supply supplies power to the first communication module, and the second power supply supplies power to the second communication module.
It can be understood that in the embodiment of the present application, the first power supply in the power supply is to supply power to the adjusted first communication module, and when the first communication module and the second communication module form the same link, the first power supply can be used as a standby power supply to supply power to the sensor communication switching module.
Further, if the 266 mode is used as the communication state of the first sensor, the first power supply can be understood as a standby power supply, if the 266 mode is required to be switched from the 266 mode to the 3444 mode, the sensor corresponding to any one power supply in the 266 communication structure is used as the first sensor in the first communication module, the first communication chip is newly added, the first sensor and the first communication chip are respectively connected with the communication switching module, and when the 3444 structure is formed, the any power supply is the power supply for supplying power to the first sensor, namely the first power supply. If the 3444 structure is to be adjusted to 266 structure, one communication chip is selected as the first communication chip, the other communication chips are selected as the second communication chip, then the sensor corresponding to the first communication chip is selected as the first sensor, the above arrangement is performed, and the links between the first communication chip, the second communication chip and the first sensor are realized through the communication change-over switch, so that the first power supply can be understood as providing the first sensor with electric power on the second communication chip.
Further, the power supply switching module comprises a first switch component, a control end of the first switch component is connected with the main control unit, a static contact of the first switch component is connected with the power supply unit respectively, and a movable contact of the switch component is connected with the first communication module respectively.
Further, the first power supply comprises a first power supply module and a second power supply module, the first switch assembly comprises at least two double-pole double-throw switch chips, and the second power supply is respectively connected with upper and lower fixed contacts on the same side of each double-pole double-throw switch chip; the first power supply module and the second power supply module are respectively connected with upper and lower fixed contacts at the other side of each double-pole double-throw switch chip; the movable contacts on each double-pole double-throw switch chip are respectively connected with the sensor in the first communication module;
the double-pole double-throw switch chip is used for adjusting the power supply unit to be in a power supply state of the first communication module and the second communication module according to the control signal of the main control unit.
In this embodiment, referring to fig. 7, two 2-way double pole double throw switch chips may be selected, for example, a dual-channel double pole double throw relay (hereinafter, described as a 1 st-way relay and a 2 nd-way relay), when there are 12-way sensors, the first communication module may include a first communication chip and four-way first sensors, for example, USS6, USS7, USS1, USS12, and the second communication module may include two second communication chips and eight-way second sensors, for example, USS4, USS5, USS9, USS8, USS2, USS3, USS11, USS10, and the connection manner may be: connecting the power supply end PWR_USS1 of the USS1 to a pin 3 of the 1 st relay, namely a first movable contact on the 1 st relay, and connecting the power supply end PWR_USS6 of the USS6 to a pin 6 of the 1 st relay, namely a second movable contact on the 1 st relay; simultaneously connecting a pin 2 and a pin 7 of the 1 st relay to USS_PWR1 in the second power supply module, and simultaneously connecting a pin 4 and a pin 5 of the 1 st relay to the first power supply module USS_PWR3; wherein, the pin 2 and the pin 7 of the 1 st relay are upper and lower static contacts on the same side of the 1 st relay; pin 4 and pin 5 of the 1 st relay are upper and lower static contacts at the other side of the 1 st relay. Connecting a power supply end PWR_USS7 of the USS7 to a pin 3 of the 2 nd relay; connecting the power supply end PWR_USS12 of the USS12 to the pin 6 of the 2 nd relay; both pin 2 and pin 7 of the 2 nd relay are connected to uss_pwr2 in the second power supply module. Simultaneously connecting the pin 4 and the pin 5 of the 2 nd relay to the first power supply module USS_PWR3; wherein, the pin 2 and the pin 7 of the 2 nd relay are upper and lower static contacts at the same side of the 2 nd relay; pin 4 and pin 5 of the 2 nd relay are upper and lower static contacts at the other side of the 2 nd relay. The enabling ends PWR_EN_1 and PWR_EN_2 of the 1 st relay and the 2 nd relay are connected with the main control unit, so that the pin levels on the 1 st relay and the 2 nd relay are adjusted according to the control signal of the main control unit, the relays are controlled to be attracted and disconnected, and the power supply is selected.
It can be understood that when the switch is to be in the first communication state, i.e. the "266" structure described in the embodiment of the present application, the enabling terminal pwr_en_1 of the 1 st relay and the enabling terminal pwr_en_2 of the 2 nd relay are set to be at low level by the main control unit, and the relay coil is not powered on and does not act, and the connection manner is as follows: the power supply ends PWR_USS1 and PWR_USS6 of the USSs 1 and 6 are connected with the USS_PWR1 in the second power supply module to supply power to the USSs 1 and 6 through the second power supply module; the power supply terminal pwr_uss7 of the uss7 and the power supply terminal pwr_uss12 of the uss12 are connected to the second power supply module uss_pwr2.
When the relay is switched to the second communication state, i.e. the "3444" structure in the embodiment of the present application, the enabling terminal pwr_en_1 of the 1 st relay and the enabling terminal pwr_en_2 of the 2 nd relay are set to the high level by the main control unit, and at this time, the relay coil is powered on, and the connection manner is as follows:
the power supply terminal pwr_uss1 of uss1, the power supply terminal pwr_uss6 of uss6, the power supply terminal pwr_uss7 of uss7, and the power supply terminal pwr_uss12 of uss12 are connected to the first power supply module uss_pwr3 to supply power through the first power supply module uss_pwr3.
Further, the communication switching module comprises a second switch component, and the control end of the second switch component is connected with the main control unit; each switch input end of the second switch component is connected with the communication end of each first sensor respectively, and each switch output end of the second switch component is connected with the communication ends of the first communication chip and the second communication chip respectively;
the second switch component adjusts the link states of the first communication module and the second communication module in different sensor communication states according to the control signal of the main control unit.
In this embodiment of the present application, the switch component is preferably used as a switching module, so that switching can be completed by receiving the high-low level signal of the main control unit, and implementation cost of the switching device is reduced.
Further, the second switch component comprises a multi-channel single-pole double-throw switch chip, an enabling end and a selection control end of the single-pole double-throw switch chip are connected with the main control unit, and each switch input end of the single-pole double-throw switch chip is connected with a communication end of each first sensor respectively; the output ends of the single-pole double-throw switch chip are respectively connected with the communication ends of the first communication chip and the second communication chip;
wherein the number of channels of the single-pole double-throw switch chip is the same as the number of the first sensors.
Further, referring to fig. 8, a four-channel single pole double throw switch chip may be selected as a communication switch module, for example, the type TMUX6234, where when there are 12 sensors, the first communication module may include a first communication chip and four first sensors, for example, USS6, USS7, USS1, USS12, the second communication module may include two second communication chips and eight second sensors, for example, USS4, USS5, USS9, USS8, USS2, USS3, USS11, USS10, where each communication chip includes two communication channels, and the communication channels on the two second communication chips may be denoted as dsi_1_1, dsi_1_2, dsi_2_1, and dsi_2_2, respectively, and the communication channels on the first communication chip may be denoted as dsi_3_1, dsi_3_2. Referring to fig. 9, the connection method may be: the communication wires of USS6, USS7, USS1 and USS12 are connected with the data input ends of the four-channel single-pole double-throw switch chip, namely D1, D2, D3 and D4, and the enabling end and the pin control end of the four-channel single-pole double-throw switch chip are connected to the main control unit, so that the level of the pin control end is adjusted through the main control unit, and the gating of the four-channel switch is realized.
In one implementation, two output ports of each data on the single pole double throw switch chip are respectively used, for example, the output ports of USS6 are respectively represented as uss6_a and uss6_b, and then uss6_a is connected to dsi_1_1 channels on one of the second communication chips; connecting uss7_a to dsi_1_2 channel of one of the second communication chips; connecting uss1_a to dsi_2_1 channel of another second communication chip; connecting uss12_a to dsi_2_2 channel of another second communication chip; connecting the USS1_B and USS7_B to a DSI_3_1 channel of the first communication chip; the uss6_b and uss12_b are connected to dsi_3_2 channels of the first communication chip.
It can be understood that when the switch is in the first communication state, i.e. in the "266" structure described in the embodiment of the present application, the enabling end of the four-channel single pole double throw switch chip is configured to be low level, and the pin control ends are configured to be high level through the main control unit, and the specific connection manner is as follows: when the four-way pins are configured to be high, D1, D2, D3 and D4 are respectively connected to uss6_ A, USS7_ A, USS1 _1_a and uss12_a terminals.
When the switch is in the second communication state, i.e. in the "3444" structure described in the embodiment of the present application, the main control unit configures the enable end of the four-channel single pole double throw switch chip to be low level, and configures the pin control end to be low level, and the specific connection mode is as follows: when the four-way pins are configured to be high, D1, D2, D3 and D4 are respectively connected to uss6_ B, USS7_ B, USS1 _1_b and uss12_b terminals.
In summary, the embodiment of the present application provides a communication switching manner based on twelve sensors, and the above connection manner is taken as an example to further illustrate a sensor communication switching device 100 provided in the embodiment of the present application, where the sensor communication switching device 100 includes a main control unit, a switching unit, a power supply unit, and a sensor communication unit; the sensor communication unit comprises a first communication module and a second communication module; the first communication module and the second communication module are both connected with the switching unit; the switching unit is also connected with the main control unit and the power supply unit; the switching unit is used for adjusting the link state of the first communication module according to the control signal of the main control unit so that the first communication module and the second communication module form different sensor communication states under different link states, and when the first communication module is in the first sensor communication state, the first communication module and the second communication module form an interconnected communication link through the switching unit; when the first sensor is in the second sensor communication state, the first communication module and the second communication module form independent communication links through the switching unit. The switching mode without changing external hardware or adjusting external wiring is provided, so that different communication topology schemes can be matched, adjustment is performed from various aspects such as a working power supply, a communication line and the like, and a more stable communication topology scheme meeting various requirements is provided.
In a second aspect, a sensor communication switching system includes the sensor communication switching device 100 of any one of the first aspects.
The embodiments of the present application provide a sensor communication switching system including all technical means and technical effects of the sensor communication switching device 100 according to any one of the first aspect.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present invention should be included in the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. The sensor communication switching device is characterized by comprising a main control unit, a switching unit, a power supply unit and a sensor communication unit; the sensor communication unit comprises a first communication module and a second communication module; the first communication module and the second communication module are both connected with the switching unit; the switching unit is also connected with the main control unit and the power supply unit;
the switching unit is used for adjusting the link state of the first communication module according to the control signal of the main control unit so that the first communication module and the second communication module form different sensor communication states in different link states;
when the first communication module is in a first sensor communication state, the first communication module and the second communication module form an interconnected communication link through the switching unit;
when the sensor is in a second sensor communication state, the first communication module and the second communication module form independent communication links through the switching unit;
the switching unit comprises a communication switching module and a power supply switching module;
the communication switching module is respectively connected with the main control unit, the first communication module and the second communication module; the communication switching module is used for adjusting the link states of the first communication module and the second communication module through the control signal of the main control unit;
the power supply switching module is respectively connected with the main control unit, the power supply unit, the first communication module and the second communication module; the power supply switching module is used for adjusting the power supply unit to be in a power supply state of the first communication module and the second communication module according to a control signal of the main control unit;
the first communication module comprises at least one first communication chip and at least one first sensor; the second communication module comprises at least one second communication chip and at least one second sensor;
the communication ends of the first sensor and the first communication chip are connected with the communication switching module;
the second sensor is connected with the communication end of the second communication chip; the communication end of the second communication chip is also connected with the communication switching module;
when the first sensor is in a first sensor communication state, the first sensor is connected with the communication end of the second communication chip through the communication switching module, and is in a communication link with each second sensor in the same interconnection;
when the first sensor is in a second sensor communication state, the first sensor is connected with the communication end of the first communication chip through the communication switching module so as to form an independent communication link with the second communication module.
2. The sensor communication switching device according to claim 1, wherein the power supply unit includes a first power supply and a second power supply; the first power supply and the second power supply are connected with the power supply switching module; the second power supply is also connected with the second communication module;
when the first sensor is in a communication state, the second power supply supplies power to the first communication module and the second communication module respectively;
when the first power supply is in a second sensor communication state, the first power supply supplies power to the first communication module, and the second power supply supplies power to the second communication module.
3. The sensor communication switching device according to claim 2, wherein the power switching module comprises a first switch assembly, a control end of the first switch assembly is connected with the main control unit, stationary contacts of the first switch assembly are respectively connected with the power supply unit, and movable contacts of the switch assembly are respectively connected with the first communication module.
4. The sensor communication switching device according to claim 1, wherein the communication switching module comprises a second switch assembly, and a control end of the second switch assembly is connected with the main control unit; each switch input end of the second switch assembly is respectively connected with the communication end of each first sensor, and each switch output end of the second switch assembly is respectively connected with the communication ends of the first communication chip and the second communication chip;
the second switch component adjusts the link states of the first communication module and the second communication module in different sensor communication states according to the control signal of the main control unit.
5. The sensor communication switching device according to claim 3, wherein the first power supply comprises a first power supply module and a second power supply module, the first switch assembly comprises at least two double-pole double-throw switch chips, and the second power supply is respectively connected with upper and lower stationary contacts on the same side of each double-pole double-throw switch chip; the first power supply module and the second power supply module are respectively connected with upper and lower fixed contacts at the other side of each double-pole double-throw switch chip; the movable contacts on each double-pole double-throw switch chip are respectively connected with the sensor in the first communication module;
the double-pole double-throw switch chip is used for adjusting the power supply unit to be in a power supply state of the first communication module and the second communication module according to the control signal of the main control unit.
6. The sensor communication switching device according to claim 4, wherein the second switch assembly comprises a multi-channel single-pole double-throw switch chip, an enabling end and a selection control end of the single-pole double-throw switch chip are connected with the main control unit, and each switch input end of the single-pole double-throw switch chip is connected with a communication end of each first sensor respectively; each switch output end of the single-pole double-throw switch chip is respectively connected with the communication ends of the first communication chip and the second communication chip;
the number of channels of the single-pole double-throw switch chip is the same as that of the first sensors.
7. The sensor communication switching device of claim 6, wherein the second switch assembly is a four-channel single pole double throw switch chip.
8. A sensor communication switching system comprising a sensor communication switching device according to any one of claims 1 to 7.
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| CN101841885A (en) * | 2009-03-19 | 2010-09-22 | 曹英晖 | Method for constructing wireless sensor network for periodical data transmission |
| CN117118846A (en) * | 2023-07-28 | 2023-11-24 | 联合汽车电子有限公司 | Ethernet network topology structure, design method and use method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101841885A (en) * | 2009-03-19 | 2010-09-22 | 曹英晖 | Method for constructing wireless sensor network for periodical data transmission |
| CN117118846A (en) * | 2023-07-28 | 2023-11-24 | 联合汽车电子有限公司 | Ethernet network topology structure, design method and use method |
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