CN112752235B - OBU detection method, OBU, ETC system, vehicle and storage medium - Google Patents
OBU detection method, OBU, ETC system, vehicle and storage medium Download PDFInfo
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- H—ELECTRICITY
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- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
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- G07B—TICKET-ISSUING APPARATUS; FARE-REGISTERING APPARATUS; FRANKING APPARATUS
- G07B15/00—Arrangements or apparatus for collecting fares, tolls or entrance fees at one or more control points
- G07B15/06—Arrangements for road pricing or congestion charging of vehicles or vehicle users, e.g. automatic toll systems
- G07B15/063—Arrangements for road pricing or congestion charging of vehicles or vehicle users, e.g. automatic toll systems using wireless information transmission between the vehicle and a fixed station
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- H—ELECTRICITY
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- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
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Abstract
The application relates to an OBU detection method, an OBU, an ETC system, a vehicle and a storage medium. The method comprises the following steps: after controlling the OBU to enter a self-checking mode, controlling the OBU to send a first radio frequency signal through a radio frequency module of the OBU; the Bluetooth module of the OBU is controlled to receive the first radio frequency signal and then transmit the first radio frequency signal to the second radio frequency signal of the Bluetooth module after wireless transmission; and determining whether the radio frequency module is abnormal according to the second radio frequency signal. By adopting the method, the self radio frequency module and the Bluetooth module of the OBU can be utilized to carry out data transmission, the self-checking of the working performance of the radio frequency module in the OBU is realized, the detection process is convenient and rapid, the external equipment is not relied on, and the detection independence is strong.
Description
Technical Field
The present disclosure relates to the field of communications technologies, and in particular, to an OBU detection method, an OBU, an ETC system, a vehicle, and a storage medium.
Background
ETC (Electronic Toll Collection ) is a new electronic automatic toll collection system, and mainly uses DSRC (Dedicated Short Range Communications, dedicated short-range communication technology) to perform data interaction between an On Board Unit (OBU) On a vehicle and a Road Side Unit (RSU) near a toll station, so as to realize toll collection transaction between the vehicle and the toll station without stopping the vehicle.
The radio frequency module in the OBU is used as an important component for data interaction with the RSU, so that whether the OBU can work normally or not is determined. When the performance of the radio frequency module in the OBU is detected by the conventional technology, the OBU is often required to be awakened under the assistance of an external signal source so as to trigger the OBU to transmit a response signal, and the external signal source receives the response signal and analyzes the response signal so as to determine the working state of the radio frequency module in the OBU.
However, the conventional method depends on an external signal source to wake up the radio frequency module in the OBU, so that the detection process is complicated and the independence is poor.
Disclosure of Invention
In view of the foregoing, it is necessary to provide a method for detecting an OBU, an ETC system, a vehicle, and a storage medium.
An OBU detection method comprising:
after the OBU is controlled to enter a self-checking mode, the OBU is controlled to send a first radio frequency signal through a radio frequency module of the OBU;
the Bluetooth module of the OBU is controlled to receive the first radio frequency signal and transmit the first radio frequency signal to the second radio frequency signal of the Bluetooth module after wireless transmission;
and determining whether the radio frequency module is abnormal according to the second radio frequency signal.
In one embodiment, controlling the OBU to enter a self-test mode includes:
detecting whether the device bearing the OBU is started or not;
if the system is started, the OBU is determined to enter a self-checking mode.
In one embodiment, the OBU includes a bluetooth switch for activating and deactivating a bluetooth module of the OBU, controlling the OBU to enter a self-test mode, comprising:
acquiring a triggering operation type of a Bluetooth switch;
and if the trigger operation type meets the preset condition, controlling the OBU to enter a self-checking mode.
In one embodiment, the trigger operation type includes a trigger duration for which the bluetooth switch is triggered;
if the triggering operation type meets the preset condition, controlling the OBU to enter a self-checking mode, wherein the method comprises the following steps:
and if the trigger time length is greater than the preset time length threshold, controlling the OBU to enter a self-checking mode.
In one embodiment, determining whether the radio frequency module is abnormal according to the second radio frequency signal includes:
acquiring signal output parameters of a second radio frequency signal; the signal output parameters are used for representing the working performance of the radio frequency module;
and determining whether the radio frequency module is abnormal according to the signal output parameters and the preset parameter range.
In one embodiment, the signal output parameter comprises a signal reception strength of the second radio frequency signal; determining whether the radio frequency module is abnormal according to the signal output parameters and the preset parameter range, including:
comparing the signal receiving intensity of the second radio frequency signal with a preset rated intensity range;
if the signal receiving intensity does not meet the rated intensity range, the abnormity of the radio frequency module is determined.
In one embodiment, the method further comprises:
if the signal receiving intensity meets the rated intensity range, controlling the Bluetooth module to send a third radio frequency signal;
determining the wake-up sensitivity of the radio frequency module according to the transmitting power of the third radio frequency signal;
comparing the wake-up sensitivity with a preset rated wake-up sensitivity range;
if the wake-up sensitivity does not meet the rated wake-up sensitivity range, determining that the radio frequency module is abnormal.
In one embodiment, determining the wake-up sensitivity of the radio frequency module according to the transmit power of the third radio frequency signal includes:
the control radio frequency module receives a fourth radio frequency signal transmitted to the radio frequency module after the third radio frequency signal is transmitted in a wireless mode, and the wake-up sensitivity of the radio frequency module is determined according to the transmitting power of the fourth radio frequency signal received by the radio frequency module.
In one embodiment, the method further comprises:
if the wake-up sensitivity meets the rated wake-up sensitivity range, determining the receiving sensitivity of the radio frequency module according to the transmitting power of the third radio frequency signal;
comparing the receiving sensitivity with a preset rated receiving sensitivity range;
if the receiving sensitivity does not meet the rated receiving sensitivity range, determining that the radio frequency module is abnormal.
In one embodiment, determining the receiving sensitivity of the radio frequency module according to the transmitting power of the third radio frequency signal includes:
and acquiring the error rate between the third radio frequency signal and the fourth radio frequency signal, and determining the receiving sensitivity of the radio frequency module according to the transmitting power of the fourth radio frequency signal when the error rate is larger than the preset error rate.
In one embodiment, if the radio frequency module is abnormal, the OBU is restarted.
An OBU comprises a processor, a radio frequency detection circuit, a radio frequency module and a Bluetooth module; the processor is respectively connected with the radio frequency detection circuit, the radio frequency module and the Bluetooth module, and the radio frequency detection circuit is connected with the Bluetooth module in an on-off manner under the action of the processor;
and the processor is used for controlling the OBU to send a first radio frequency signal through the radio frequency module of the OBU after controlling the OBU to enter the self-checking mode, controlling the radio frequency detection circuit to be connected with the Bluetooth module, controlling the Bluetooth module to receive a second radio frequency signal transmitted to the Bluetooth module after the first radio frequency signal is transmitted in a wireless mode, and determining whether the radio frequency module is abnormal according to the second radio frequency signal.
An OBU comprising a memory storing a computer program and a processor which when executing the computer program performs the steps of:
after the OBU is controlled to enter a self-checking mode, the OBU is controlled to send a first radio frequency signal through a radio frequency module of the OBU;
the Bluetooth module of the OBU is controlled to receive the first radio frequency signal and transmit the first radio frequency signal to the second radio frequency signal of the Bluetooth module after wireless transmission;
and determining whether the radio frequency module is abnormal according to the second radio frequency signal.
An ETC system comprises a road side unit and the OBU.
A vehicle comprising an OBU as described above.
A computer readable storage medium having stored thereon a computer program, characterized in that the computer program when executed by a processor performs the steps of:
after the OBU is controlled to enter a self-checking mode, the OBU is controlled to send a first radio frequency signal through a radio frequency module of the OBU;
the Bluetooth module of the OBU is controlled to receive the first radio frequency signal and transmit the first radio frequency signal to the second radio frequency signal of the Bluetooth module after wireless transmission;
and determining whether the radio frequency module is abnormal according to the second radio frequency signal.
According to the detection method of the OBU, the ETC system, the vehicle and the storage medium, after the OBU is controlled to enter the self-checking mode, the OBU is controlled to send the first radio frequency signal through the radio frequency module of the OBU, the Bluetooth module of the OBU is controlled to receive the second radio frequency signal transmitted to the Bluetooth module after the first radio frequency signal is transmitted in a wireless mode, and whether the radio frequency module is abnormal or not is further determined according to the second radio frequency signal. Through the mode, the self-checking of the working performance of the radio frequency module in the OBU is realized by utilizing the radio frequency module and the Bluetooth module of the OBU to carry out data transmission, the detection process is convenient and fast, the external equipment is not relied on, and the detection independence is strong.
Drawings
FIG. 1 is a flow chart of a method for detecting an OBU in one embodiment;
FIG. 2 is a schematic flow diagram of an OBU entering a self-test mode in one embodiment;
FIG. 3 is a schematic flow chart of an OBU entering a self-test mode according to another embodiment;
FIG. 4 is a flow chart of determining whether the RF module in the OBU is abnormal in one embodiment;
fig. 5 is a flowchart illustrating a process of determining whether a radio frequency module in an OBU is abnormal in another embodiment;
fig. 6 is a flowchart illustrating a process of determining whether a radio frequency module in an OBU is abnormal in another embodiment;
FIG. 7 is a block diagram of the structure of an OBU in one embodiment;
fig. 8 is an internal block diagram of an OBU in one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
In one embodiment, as shown in fig. 1, a method of detecting an OBU is provided. The OBU is disposed on a vehicle, such as a front windshield of a vehicle, and communicates with the RSU via microwaves at a toll station. When the vehicle approaches the gear lever, the RSU recognizes a signal from the OBU, and the gear lever is automatically opened, so that the function of automatically controlling traffic is realized. The OBU of the vehicle end to which the above detection method is applied is illustrated in this embodiment. In this embodiment, the method includes the steps of:
s110, after the OBU is controlled to enter a self-checking mode, the OBU is controlled to send a first radio frequency signal through a radio frequency module of the OBU.
The self-checking mode refers to a working mode that the OBU detects the working performance of the self-radio frequency module. The radio frequency module receives and transmits signals through a radio frequency antenna in the OBU.
Specifically, after receiving an instruction for entering a self-checking mode, the OBU enters the self-checking mode, and controls a radio frequency module of the OBU to send first radio frequency information of preset transmitting power. The preset transmitting power is the transmitting power of the signal sent by the radio frequency module when the OBU enters the working state.
S120, controlling the Bluetooth module of the OBU to receive the first radio frequency signal and then transmit the first radio frequency signal to the second radio frequency signal of the Bluetooth module after wireless transmission.
The Bluetooth module receives and transmits signals through a Bluetooth antenna in the OBU.
Specifically, the OBU controls its own bluetooth module to enter a signal receiving mode, and receives a second radio frequency signal transmitted to the bluetooth module after the first radio frequency signal is transmitted wirelessly.
S130, determining whether the radio frequency module is abnormal according to the second radio frequency signal.
Specifically, the OBU demodulates the second radio frequency signal received by the bluetooth module, reads data, and so on, so as to determine whether the radio frequency module is abnormal.
In this embodiment, after the OBU controls itself to enter the self-checking mode, it controls itself to send the first radio frequency signal through its radio frequency module, and controls its bluetooth module to receive the second radio frequency signal that is transmitted to the bluetooth module after the first radio frequency signal is transmitted wirelessly, so as to determine whether the radio frequency module is abnormal according to the second radio frequency signal. Through the mode, the self-checking of the working performance of the radio frequency module in the OBU is realized by utilizing the radio frequency module and the Bluetooth module of the OBU to carry out data transmission, the detection process is convenient and fast, the external equipment is not relied on, and the detection independence is strong.
In one embodiment, to improve the timeliness of the detection, as shown in fig. 2, the controlling the OBU in S110 to enter the self-checking mode includes:
s210, detecting whether the device bearing the OBU is started.
S220, if the system is started, determining that the OBU enters a self-checking mode.
Specifically, the OBU determines whether to enter a self-test mode by detecting whether the device carrying the OBU is activated. If the device carrying the OBU is started, the OBU is determined to enter a self-checking mode. For example, the device bearing the OBU is a vehicle, and when the OBU detects that the vehicle is started by ignition, the OBU enters a self-checking mode so as to timely detect the working performance of the radio frequency module in the OBU and timely find out the problem when the vehicle is started each time, and solve the problem as early as possible.
Optionally, the OBU includes a bluetooth switch for starting and stopping a bluetooth module of the OBU, so as to further improve the convenience of detection, as shown in fig. 3, the controlling OBU in S110 described above to enter a self-checking mode includes:
s310, acquiring the triggering operation type of the Bluetooth switch.
S320, if the triggering operation type meets the preset condition, controlling the OBU to enter a self-checking mode.
The triggering operation type is used for representing an operation mode of triggering the Bluetooth switch by a user. Optionally, the trigger operation type includes the number of presses, such as single presses or continuous presses, and may also include the duration of the presses, such as short presses and continuous presses. For example, the bluetooth switch is pressed once, so that the bluetooth antenna in the bluetooth module can be controlled to send and receive signals, or the bluetooth antenna can be turned off. Specifically, the OBU acquires a trigger operation type of the user on the bluetooth switch, and judges whether the trigger operation type meets a preset condition to determine whether to control the OBU to enter a self-checking mode. If yes, the OBU is controlled to enter a self-checking mode.
Optionally, the trigger operation type includes a trigger duration for which the bluetooth switch is triggered, such as a pressing duration for the bluetooth switch. And if the OBU detects that the acquired trigger time length is greater than the preset time length threshold, controlling the OBU to enter a self-checking mode. For example, the preset duration threshold is 5s, and if the OBU detects that the pressing time of the bluetooth switch is longer than 5s, the OBU is controlled to enter a self-checking mode.
In the above embodiment, the OBU may determine whether to start the device carrying the OBU, or whether to control itself to enter the self-checking mode according to the determination of the triggering operation type of the triggering bluetooth switch, so as to perform the OBU self-checking at any time and any place, thereby improving the timeliness and convenience of detection.
In one embodiment, to improve the accuracy of the detection, as shown in fig. 4, the step S130 includes:
s410, acquiring signal output parameters of the second radio frequency signals.
The signal output parameters are used for representing the working performance of the radio frequency module. Optionally, the signal output parameter includes a signal reception strength of the second radio frequency signal, the signal reception strength being usable to determine whether a transmission power of the second radio frequency signal is abnormal.
S420, determining whether the radio frequency module is abnormal according to the signal output parameters and the preset parameter range.
Specifically, the OBU obtains the signal receiving strength (RSSI, received Signal Strength Indication) of the second radio frequency signal received by the bluetooth module, compares the RSSI of the second radio frequency signal with a preset rated strength range, and if the RSSI of the second radio frequency signal does not meet the rated strength range, determines that the radio frequency module has an abnormality in the transmitting power.
Optionally, considering environmental loss inside the OBU device, the environmental loss may increase the transmission power of the signal, and the transmission power value P2 of the second radio frequency signal received by the bluetooth module may be directly obtained, and the transmission power value P2 minus the power value P1 increased by the environmental loss is used to obtain a real power value of the second radio frequency signal received by the bluetooth module, and the real power value is compared with a preset power value to determine whether the radio frequency model has an abnormality on the transmission power.
In this embodiment, the OBU determines whether the radio frequency module is abnormal by acquiring the signal output parameter of the second radio frequency signal received by the bluetooth module, specifically by comparing the RSSI of the second radio frequency signal with a preset rated strength range, if the RSSI of the second radio frequency signal does not meet the rated strength range, it is determined that the radio frequency module has an abnormality on the transmitting power, and the accuracy of detection is improved by adopting a quantitative comparison mode, and meanwhile, the targeted detection of the transmitting power of the radio frequency module in the OBU is realized, so as to realize the positioning of the abnormality of the OBU, which is favorable for subsequent maintenance and adjustment.
In one embodiment, to improve the accuracy of the detection, if the signal receiving intensity meets the rated intensity range, as shown in fig. 5, the method further includes:
s510, controlling the Bluetooth module to send a third radio frequency signal.
Optionally, the third video signal is a radio frequency signal of any transmission power.
Specifically, the OBU controls its own bluetooth module to transmit a third radio frequency signal with any transmission power.
S520, determining the wake-up sensitivity of the radio frequency module according to the transmitting power of the third radio frequency signal.
The wake-up sensitivity is the power value of the signal received by the radio frequency module when the OBU is awakened for the first time.
Specifically, the OBU adjusts the transmitting power of the third radio frequency signal sent by the bluetooth module, controls the radio frequency module to receive the fourth radio frequency signal transmitted to the radio frequency module after the third radio frequency signal is transmitted wirelessly, and determines the wake-up sensitivity of the radio frequency module according to the transmitting power of the fourth radio frequency signal received by the radio frequency module.
Optionally, the transmitting power W1 of the fourth radio frequency signal received by the radio frequency module considers the preset loss power W2 inside the radio frequency module in the OBU, and the wake-up sensitivity of the corresponding radio frequency module is w1+w2.
S530, comparing the wake-up sensitivity with a preset rated wake-up sensitivity range.
S540, if the wake-up sensitivity does not meet the rated wake-up sensitivity range, determining that the radio frequency module is abnormal.
Specifically, the OBU compares the obtained wake-up sensitivity with a preset rated sensitivity range, and if the wake-up sensitivity does not meet the rated sensitivity range, determines that the radio frequency module has an abnormality in the wake-up sensitivity.
In this embodiment, when the OBU detects that the signal receiving strength of the second radio frequency signal received by the bluetooth module meets the rated strength range, it is determined that the radio frequency module has no abnormality in the transmission power. The OBU further controls the Bluetooth module to send a third radio frequency signal, adjusts the transmitting power of the third radio frequency signal, and determines the wake-up sensitivity when the radio frequency module just receives the fourth radio frequency signal. And the OBU further compares the obtained wake-up sensitivity with a preset rated wake-up sensitivity range, and if the obtained wake-up sensitivity does not meet the rated wake-up sensitivity range, the radio frequency module is determined to have abnormality in wake-up sensitivity. On the basis of determining that the radio frequency module has no abnormality in the transmission power, whether the radio frequency module has abnormality in the wake-up sensitivity is further determined, the targeted detection of the wake-up sensitivity of the radio frequency module in the OBU is realized, and the detection accuracy is further improved.
In one embodiment, to further improve the detection accuracy, if the obtained wake-up sensitivity meets the rated wake-up sensitivity range, as shown in fig. 6, the method further includes:
s610, determining the receiving sensitivity of the radio frequency module according to the transmitting power of the third radio frequency signal.
The receiving sensitivity is the power value of the signal sent by the Bluetooth module when the error rate between the signal sent by the Bluetooth module and the signal received by the radio frequency module meets the preset condition.
Specifically, on the basis that the radio frequency module can receive the fourth radio frequency signal, the OBU further adjusts the transmitting power of the third radio frequency signal sent by the Bluetooth module, calculates the error rate between the third radio frequency signal sent by the Bluetooth module and the fourth radio frequency signal received by the radio frequency module, stops adjusting the transmitting power of the third radio frequency signal until the error rate is greater than the preset error rate, and determines the receiving sensitivity of the radio frequency module according to the transmitting power of the fourth radio frequency signal at the moment.
Optionally, when the error rate is greater than the preset error rate, the transmitting power R1 of the fourth radio frequency signal considers the preset loss power R2 inside the radio frequency module in the OBU, and the wake-up sensitivity of the corresponding radio frequency module is r1+r2.
S620, comparing the receiving sensitivity with a preset rated receiving sensitivity range.
S630, if the receiving sensitivity does not meet the rated receiving sensitivity range, determining that the radio frequency module is abnormal.
Specifically, the OBU compares the obtained receiving sensitivity with a preset rated receiving sensitivity range, and if the receiving sensitivity does not meet the rated receiving sensitivity range, determines that the radio frequency module has an abnormality in the receiving sensitivity.
Optionally, the method for detecting an OBU further includes restarting the OBU if the radio frequency module is abnormal. Specifically, if there is an abnormality in the transmit power, an abnormality in the wake-up sensitivity, or an abnormality in the reception sensitivity during the self-test of the OBU, the OBU can control its own restart and initialize the OBU.
In this embodiment, when the OBU detects that the wake-up sensitivity of the radio frequency module meets the rated wake-up sensitivity range, it is determined that the radio frequency module has no abnormality in the wake-up sensitivity. And the OBU further adjusts the transmitting power of the third radio frequency signal, and determines the receiving sensitivity when the error rate between the third radio frequency signal and the fourth radio frequency signal meets the preset error rate. And the OBU further compares the obtained receiving sensitivity with a preset rated receiving sensitivity range, and if the obtained receiving sensitivity does not meet the rated receiving sensitivity range, the radio frequency module is determined to have abnormality in the receiving sensitivity. On the basis of determining that the radio frequency module has no abnormality in the wake-up sensitivity, the radio frequency module is further determined whether the radio frequency module has abnormality in the receive sensitivity, so that the targeted detection of the radio frequency module in the OBU is realized, the radio frequency module in the OBU is further detected layer by layer from transmitting to waking up, and then the radio frequency module in the whole process of receiving is further detected layer by layer, and the comprehensiveness and accuracy of detection are further improved.
It should be understood that, although the steps in the flowcharts of fig. 1-6 are shown in order as indicated by the arrows, these steps are not necessarily performed in order as indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least some of the steps in FIGS. 1-6 may include multiple steps or stages that are not necessarily performed at the same time, but may be performed at different times, nor do the order in which the steps or stages are performed necessarily performed in sequence, but may be performed alternately or alternately with at least a portion of the steps or stages in other steps or other steps.
In one embodiment, as shown in fig. 7, there is provided an OBU comprising: a processor 701, a radio frequency detection circuit 702, a radio frequency module 703 and a bluetooth module 704, wherein:
the processor 701 is respectively connected with the radio frequency detection circuit 702, the radio frequency module 703 and the Bluetooth module 704, and the radio frequency detection circuit 702 is connected with the Bluetooth module 704 in an on-off manner under the action of the processor 701; the processor 701 is configured to, after controlling the OBU to enter the self-checking mode, control the OBU to send a first radio frequency signal through the radio frequency module 703 of the OBU, control the radio frequency detection circuit 702 to switch on the bluetooth module 704, control the bluetooth module 704 to receive a second radio frequency signal transmitted to the bluetooth module 704 after the first radio frequency signal is wirelessly transmitted, and determine whether the radio frequency module 703 is abnormal according to the second radio frequency signal.
In one embodiment, the processor 701 is specifically configured to:
detecting whether the device bearing the OBU is started or not; if the system is started, the OBU is determined to enter a self-checking mode.
In one embodiment, the OBU includes a bluetooth switch for activating and deactivating a bluetooth module of the OBU, and the processor 701 is specifically configured to:
acquiring a triggering operation type of a Bluetooth switch; and if the trigger operation type meets the preset condition, controlling the OBU to enter a self-checking mode.
In one embodiment, the trigger operation type includes a trigger duration for which the bluetooth switch is triggered, and the processor 701 is specifically configured to:
and if the trigger time length is greater than the preset time length threshold, controlling the OBU to enter a self-checking mode.
In one embodiment, the processor 701 is specifically configured to:
acquiring signal output parameters of a second radio frequency signal; the signal output parameters are used for representing the working performance of the radio frequency module; and determining whether the radio frequency module is abnormal according to the signal output parameters and the preset parameter range.
In one embodiment, the signal output parameter includes a signal reception strength of the second radio frequency signal, and the processor 701 is specifically configured to:
comparing the signal receiving intensity of the second radio frequency signal with a preset rated intensity range; if the signal receiving intensity does not meet the rated intensity range, the abnormity of the radio frequency module is determined.
In one embodiment, the processor 701 is further configured to:
if the signal receiving intensity meets the rated intensity range, controlling the Bluetooth module to send a third radio frequency signal; determining the wake-up sensitivity of the radio frequency module according to the transmitting power of the third radio frequency signal; comparing the wake-up sensitivity with a preset rated wake-up sensitivity range; if the wake-up sensitivity does not meet the rated wake-up sensitivity range, determining that the radio frequency module is abnormal.
In one embodiment, the processor 701 is specifically configured to:
the control radio frequency module receives a fourth radio frequency signal transmitted to the radio frequency module after the third radio frequency signal is transmitted in a wireless mode, and the wake-up sensitivity of the radio frequency module is determined according to the transmitting power of the fourth radio frequency signal received by the radio frequency module.
In one embodiment, the processor 701 is further configured to:
if the wake-up sensitivity meets the rated wake-up sensitivity range, determining the receiving sensitivity of the radio frequency module according to the transmitting power of the third radio frequency signal; comparing the receiving sensitivity with a preset rated receiving sensitivity range; if the receiving sensitivity does not meet the rated receiving sensitivity range, determining that the radio frequency module is abnormal.
In one embodiment, the processor 701 is specifically configured to:
and acquiring the error rate between the third radio frequency signal and the fourth radio frequency signal, and determining the receiving sensitivity of the radio frequency module according to the transmitting power of the fourth radio frequency signal when the error rate is larger than the preset error rate.
In one embodiment, the processor 701 is further configured to:
if the radio frequency module is abnormal, restarting the OBU.
For specific limitations of the OBU, reference may be made to the above limitations of the control method of the OBU, and no further description is given here. Each of the modules in the OBU described above may be implemented in whole or in part by software, hardware, and combinations thereof. The above modules may be embedded in hardware or may be independent of a processor in the computer device, or may be stored in software in a memory in the computer device, so that the processor may call and execute operations corresponding to the above modules.
In one embodiment, an OBU is provided, the internal structure of which may be as shown in fig. 8. The OBU includes a processor, a memory, a communication interface, a display screen, and an input device connected by a system bus. Wherein the processor of the OBU is configured to provide computing and control capabilities. The memory of the OBU includes a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The communication interface of the OBU is configured to perform wired or wireless communication with an external terminal, where the wireless mode may be implemented through WIFI, an operator network, NFC (near field communication), or other technologies. The computer program, when executed by a processor, implements a method of detection of an OBU. The display screen of the OBU can be a liquid crystal display screen or an electronic ink display screen, the input device of the OBU can be a touch layer covered on the display screen, can also be a key, a track ball or a touch pad arranged on an OBU shell, and can also be an external keyboard, a touch pad or a mouse and the like.
It will be appreciated by those skilled in the art that the structure shown in fig. 8 is merely a block diagram of some of the structures associated with the present application and is not limiting of the computer device to which the present application may be applied, and that a particular computer device may include more or fewer components than shown, or may combine certain components, or have a different arrangement of components.
In one embodiment, an OBU is provided comprising a memory and a processor, the memory having stored therein a computer program, the processor when executing the computer program performing the steps of:
after the OBU is controlled to enter a self-checking mode, the OBU is controlled to send a first radio frequency signal through a radio frequency module of the OBU; the Bluetooth module of the OBU is controlled to receive the first radio frequency signal and transmit the first radio frequency signal to the second radio frequency signal of the Bluetooth module after wireless transmission; and determining whether the radio frequency module is abnormal according to the second radio frequency signal.
In one embodiment, the processor when executing the computer program further performs the steps of:
detecting whether the device bearing the OBU is started or not; if the system is started, the OBU is determined to enter a self-checking mode.
In one embodiment, the OBU includes a bluetooth switch for activating and deactivating a bluetooth module of the OBU, the processor executing the computer program further performing the steps of:
acquiring a triggering operation type of a Bluetooth switch; and if the trigger operation type meets the preset condition, controlling the OBU to enter a self-checking mode.
In one embodiment, the trigger operation type includes a trigger duration for which the bluetooth switch is triggered, and the processor when executing the computer program further performs the steps of:
and if the trigger time length is greater than the preset time length threshold, controlling the OBU to enter a self-checking mode.
In one embodiment, the processor when executing the computer program further performs the steps of:
acquiring signal output parameters of a second radio frequency signal; the signal output parameters are used for representing the working performance of the radio frequency module; and determining whether the radio frequency module is abnormal according to the signal output parameters and the preset parameter range.
In one embodiment, the signal output parameter comprises a signal reception strength of the second radio frequency signal, and the processor when executing the computer program further performs the steps of:
comparing the signal receiving intensity of the second radio frequency signal with a preset rated intensity range; if the signal receiving intensity does not meet the rated intensity range, the abnormity of the radio frequency module is determined.
In one embodiment, the processor when executing the computer program further performs the steps of:
if the signal receiving intensity meets the rated intensity range, controlling the Bluetooth module to send a third radio frequency signal; determining the wake-up sensitivity of the radio frequency module according to the transmitting power of the third radio frequency signal; comparing the wake-up sensitivity with a preset rated wake-up sensitivity range; if the wake-up sensitivity does not meet the rated wake-up sensitivity range, determining that the radio frequency module is abnormal.
In one embodiment, the processor when executing the computer program further performs the steps of:
the control radio frequency module receives a fourth radio frequency signal transmitted to the radio frequency module after the third radio frequency signal is transmitted in a wireless mode, and the wake-up sensitivity of the radio frequency module is determined according to the transmitting power of the fourth radio frequency signal received by the radio frequency module.
In one embodiment, the processor when executing the computer program further performs the steps of:
if the wake-up sensitivity meets the rated wake-up sensitivity range, determining the receiving sensitivity of the radio frequency module according to the transmitting power of the third radio frequency signal; comparing the receiving sensitivity with a preset rated receiving sensitivity range; if the receiving sensitivity does not meet the rated receiving sensitivity range, determining that the radio frequency module is abnormal.
In one embodiment, the processor when executing the computer program further performs the steps of:
and acquiring the error rate between the third radio frequency signal and the fourth radio frequency signal, and determining the receiving sensitivity of the radio frequency module according to the transmitting power of the fourth radio frequency signal when the error rate is larger than the preset error rate.
In one embodiment, the processor when executing the computer program further performs the steps of:
if the radio frequency module is abnormal, restarting the OBU.
In one embodiment, an ETC system is provided that includes a roadside unit and the OBU described above.
In one embodiment, a vehicle is provided that includes the OBU described above.
In one embodiment, a computer readable storage medium is provided having a computer program stored thereon, which when executed by a processor, performs the steps of:
after the OBU is controlled to enter a self-checking mode, the OBU is controlled to send a first radio frequency signal through a radio frequency module of the OBU; the Bluetooth module of the OBU is controlled to receive the first radio frequency signal and transmit the first radio frequency signal to the second radio frequency signal of the Bluetooth module after wireless transmission; and determining whether the radio frequency module is abnormal according to the second radio frequency signal.
In one embodiment, the computer program when executed by the processor further performs the steps of:
detecting whether the device bearing the OBU is started or not; if the system is started, the OBU is determined to enter a self-checking mode.
In one embodiment, the OBU comprises a bluetooth switch for activating and deactivating a bluetooth module of the OBU, the computer program when executed by the processor further implementing the steps of:
acquiring a triggering operation type of a Bluetooth switch; and if the trigger operation type meets the preset condition, controlling the OBU to enter a self-checking mode.
In one embodiment, the trigger operation type includes a trigger duration for which the bluetooth switch is triggered, and the computer program when executed by the processor further performs the steps of:
and if the trigger time length is greater than the preset time length threshold, controlling the OBU to enter a self-checking mode.
In one embodiment, the computer program when executed by the processor further performs the steps of:
acquiring signal output parameters of a second radio frequency signal; the signal output parameters are used for representing the working performance of the radio frequency module; and determining whether the radio frequency module is abnormal according to the signal output parameters and the preset parameter range.
In one embodiment, the signal output parameter comprises a signal reception strength of the second radio frequency signal, the computer program when executed by the processor further implementing the steps of:
comparing the signal receiving intensity of the second radio frequency signal with a preset rated intensity range; if the signal receiving intensity does not meet the rated intensity range, the abnormity of the radio frequency module is determined.
In one embodiment, the computer program when executed by the processor further performs the steps of:
if the signal receiving intensity meets the rated intensity range, controlling the Bluetooth module to send a third radio frequency signal; determining the wake-up sensitivity of the radio frequency module according to the transmitting power of the third radio frequency signal; comparing the wake-up sensitivity with a preset rated wake-up sensitivity range; if the wake-up sensitivity does not meet the rated wake-up sensitivity range, determining that the radio frequency module is abnormal.
In one embodiment, the computer program when executed by the processor further performs the steps of:
the control radio frequency module receives a fourth radio frequency signal transmitted to the radio frequency module after the third radio frequency signal is transmitted in a wireless mode, and the wake-up sensitivity of the radio frequency module is determined according to the transmitting power of the fourth radio frequency signal received by the radio frequency module.
In one embodiment, the computer program when executed by the processor further performs the steps of:
if the wake-up sensitivity meets the rated wake-up sensitivity range, determining the receiving sensitivity of the radio frequency module according to the transmitting power of the third radio frequency signal; comparing the receiving sensitivity with a preset rated receiving sensitivity range; if the receiving sensitivity does not meet the rated receiving sensitivity range, determining that the radio frequency module is abnormal.
In one embodiment, the computer program when executed by the processor further performs the steps of:
and acquiring the error rate between the third radio frequency signal and the fourth radio frequency signal, and determining the receiving sensitivity of the radio frequency module according to the transmitting power of the fourth radio frequency signal when the error rate is larger than the preset error rate.
In one embodiment, the computer program when executed by the processor further performs the steps of:
if the radio frequency module is abnormal, restarting the OBU.
Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in embodiments provided herein may include at least one of non-volatile and volatile memory. The nonvolatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, or the like. Volatile memory can include random access memory (Random Access Memory, RAM) or external cache memory. By way of illustration, and not limitation, RAM can be in the form of a variety of forms, such as static random access memory (Static Random Access Memory, SRAM) or dynamic random access memory (Dynamic Random Access Memory, DRAM), and the like.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples merely represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the invention. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.
Claims (16)
1. A method for detecting an OBU, the method comprising:
after controlling the OBU to enter a self-checking mode, controlling the OBU to send a first radio frequency signal through a radio frequency module of the OBU;
the Bluetooth module of the OBU is controlled to receive a second radio frequency signal after the first radio frequency signal is transmitted wirelessly;
acquiring a transmitting power value of the second radio frequency signal received by the Bluetooth module of the OBU and environmental loss inside the OBU;
and determining whether the transmitting power of the radio frequency module is abnormal according to the transmitting power value of the second radio frequency signal and the environmental loss inside the OBU.
2. The method of claim 1, wherein the controlling the OBU to enter a self-test mode comprises:
detecting whether equipment bearing the OBU is started or not;
and if the OBU is started, determining that the OBU enters the self-checking mode.
3. The method of claim 1, wherein the OBU includes a bluetooth switch for activating and deactivating a bluetooth module of the OBU, the controlling the OBU to enter a self-test mode comprising:
acquiring a triggering operation type of the Bluetooth switch;
and if the triggering operation type meets the preset condition, controlling the OBU to enter a self-checking mode.
4. A method according to claim 3, wherein the trigger operation type comprises a trigger duration for which the bluetooth switch is triggered;
if the trigger operation type meets the preset condition, controlling the OBU to enter a self-checking mode, including:
and if the triggering time length is greater than a preset time length threshold, controlling the OBU to enter a self-checking mode.
5. The method of claim 1, wherein the determining whether the transmit power of the radio frequency module is abnormal based on the environmental loss inside the device of the OBU of the transmit power value of the second radio frequency signal comprises:
acquiring a difference between the transmission power value and the environmental loss;
and determining whether the transmitting power of the radio frequency module is abnormal or not according to the difference value between the transmitting power value and the environmental loss and a preset difference value range.
6. The method of claim 5, wherein the signal output parameter comprises a signal reception strength of the second radio frequency signal;
the determining whether the transmitting power of the radio frequency module is abnormal according to the difference value between the transmitting power value and the environmental loss and the preset difference value range comprises the following steps:
comparing the difference between the transmission power value and the environmental loss with a preset rated difference range;
and if the difference value between the transmitting power value and the environmental loss does not meet the rated difference range, determining that the transmitting power of the radio frequency module is abnormal.
7. The method of claim 6, wherein the method further comprises:
if the difference value between the transmitting power value and the environmental loss meets the rated difference value range, controlling the Bluetooth module to transmit a third radio frequency signal;
determining the awakening sensitivity of the radio frequency module according to the transmitting power of the third radio frequency signal;
comparing the wake-up sensitivity with a preset rated wake-up sensitivity range;
and if the wake-up sensitivity does not meet the rated wake-up sensitivity range, determining that the radio frequency module is abnormal.
8. The method of claim 7, wherein determining the wake-up sensitivity of the radio frequency module based on the transmit power of the third radio frequency signal comprises:
and controlling the radio frequency module to receive a fourth radio frequency signal transmitted to the radio frequency module after the third radio frequency signal is transmitted in a wireless way, and determining the awakening sensitivity of the radio frequency module according to the transmitting power of the third radio frequency signal when the radio frequency module receives the fourth radio frequency signal.
9. The method of claim 8, wherein the method further comprises:
if the wake-up sensitivity meets the rated wake-up sensitivity range, determining the receiving sensitivity of the radio frequency module according to the transmitting power of the third radio frequency signal;
comparing the receiving sensitivity with a preset rated receiving sensitivity range;
and if the receiving sensitivity does not meet the rated receiving sensitivity range, determining that the radio frequency module is abnormal.
10. The method of claim 9, wherein determining the receive sensitivity of the rf module based on the transmit power of the third rf signal comprises:
and acquiring the error rate between the third radio frequency signal and the fourth radio frequency signal, and determining the receiving sensitivity of the radio frequency module according to the transmitting power of the third radio frequency signal when the error rate is larger than a preset error rate.
11. The method according to any one of claims 1 to 10, wherein,
and restarting the OBU if the radio frequency module is abnormal.
12. The OBU is characterized by comprising a processor, a radio frequency detection circuit, a radio frequency module and a Bluetooth module, wherein the processor is respectively connected with the radio frequency detection circuit, the radio frequency module and the Bluetooth module, and the radio frequency detection circuit is connected with the Bluetooth module in an on-off manner under the action of the processor;
the processor is configured to control the OBU to send a first radio frequency signal through a radio frequency module of the OBU after controlling the OBU to enter a self-checking mode, and control the radio frequency detection circuit to connect the bluetooth module and control the bluetooth module to receive a second radio frequency signal after the first radio frequency signal is transmitted wirelessly, so as to obtain a transmission power value of the second radio frequency signal received by the bluetooth module of the OBU and environmental loss inside the device of the OBU; and determining whether the transmitting power of the radio frequency module is abnormal according to the transmitting power value of the second radio frequency signal and the environmental loss inside the OBU.
13. An OBU comprising a memory and a processor, said memory storing a computer program, characterized in that said processor implements the steps of the method according to any one of claims 1 to 11 when said computer program is executed.
14. An ETC system comprising a roadside unit and the OBU of claim 12 or claim 13.
15. A vehicle comprising an OBU according to claim 12 or claim 13.
16. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the method of any of claims 1 to 11.
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