CN113771674B

CN113771674B - Vehicle detection device and fill electric pile fault detection system and fill electric pile

Info

Publication number: CN113771674B
Application number: CN202111313904.6A
Authority: CN
Inventors: 李子坚; 彭龙锋; 王双衔; 穆龄波
Original assignee: Guangzhou Wancheng Wanchong New Energy Technology Co ltd
Current assignee: Guangzhou Wancheng Wanchong New Energy Technology Co ltd
Priority date: 2021-11-08
Filing date: 2021-11-08
Publication date: 2022-04-05
Anticipated expiration: 2041-11-08
Also published as: CN113771674A

Abstract

The invention provides a vehicle detection device, a charging pile fault detection system and a charging pile, wherein the vehicle detection device comprises a first distance detection unit, a second distance detection unit and a processing unit; the first distance detection unit and the second distance detection unit are parallel to each other in detection direction, and have a certain spacing distance in the horizontal direction perpendicular to the detection direction; the processing unit judges whether a vehicle exists according to the ranging data of the first distance detection unit and the second distance detection unit. The distance detection based on the double detection units can realize accurate identification and detection of the vehicle. Fill electric pile fault detection system based on vehicle detection device can be comparatively high-efficient, convenient realization fill electric pile's fault detection, and implementation cost is lower, has stronger practicality.

Description

Vehicle detection device and fill electric pile fault detection system and fill electric pile

Technical Field

The invention relates to the technical field of intelligent management of charging piles, in particular to a distance-based vehicle detection device, a charging pile fault detection system and a charging pile.

Background

Electric automobile is accepted by more and more consumers as a new energy car, along with electric automobile's increase, can be provided with electric automobile dedicated parking stall usually in some public parking areas to be provided with at this parking stall and fill electric pile, make things convenient for electric automobile to charge the battery when parkking. However, in the in-service use, the arrangement of the present charging piles has the characteristics of large quantity, wide region and dispersion, and the charging piles are usually outdoor, so that the failure rate of the charging piles is high, and the charging pile operators need to invest in large manpower, material resources and financial resources to maintain the charging piles, so that a lot of troubles are brought to the charging pile operators. Therefore, the current charging pile has high failure rate, the charging experience of a charging user is seriously influenced, and the consumption selection of a consumer on the electric automobile is also indirectly influenced.

Among the prior art, still adopt artifical periodic overhaul mode to fill the fault detection of electric pile usually, carry out the large tracts of land to the electric pile of arranging and patrol and examine, find the trouble and maintain again in patrolling and examining. Although the mode of artifical periodic repair can be accurate the search for the electric pile that fills who breaks down, however, the detection of this mode has certain blindness, needs the regular more manpower that drops into, is difficult to guarantee the timeliness of troubleshooting and troubleshooting.

At present, some charging pile manufacturers and operators try to add fault detection systems capable of automatically detecting and diagnosing charging faults into a charging pile system, and the fault detection systems usually perform timing detection on circuit elements and loops formed by charging piles in a non-charging state, and generate fault information after detecting abnormal signals. Or detecting charging current and voltage data when the charging pile is in a charging state, generating new fault information after data abnormality is found, or judging the health state of the charging pile according to historical charging data records so as to prejudge the fault of the charging pile. However, in the common faults of the current charging pile, a considerable part of fault types are difficult to detect by the current fault automatic detection system, for example, faults which can be reproduced only in the charging interaction process, or charging gun skipping faults, gun clamping faults and the like which are difficult to detect by the current detection mode. Although the types of faults are not faults of the charging circuit, the users cannot realize normal charging, and the use of the charging pile by the users is seriously influenced.

Disclosure of Invention

The invention aims to at least partially solve the problems in the prior art and provides a vehicle detection device, a charging pile fault detection system and a charging pile.

The purpose of the invention is realized as follows: a vehicle detection device is provided, which includes a first distance detection unit, a second distance detection unit, and a processing unit;

the detection direction of the first distance detection unit is parallel to the detection direction of the second distance detection unit, and the first distance detection unit and the second distance detection unit have a certain spacing distance in the horizontal direction perpendicular to the detection direction;

the processing unit is used for judging whether a vehicle exists according to the ranging data of the first distance detection unit and the second distance detection unit.

Preferably, the value of the separation distance is set to any one parameter of 1m to 2.2 m.

Preferably, the first distance detection unit and the second distance detection unit both have a detection threshold module, the detection threshold module is configured to set a detection distance threshold of the distance detection unit, and the detection distance threshold is set to any one parameter of 3-6 m.

Preferably, the processing unit comprises a difference detection module and a vehicle detection module;

the difference detection module is used for detecting and acquiring the ranging data and calculating and generating differences of a plurality of simultaneous ranging data when the first distance detection unit and the second distance detection unit are continuously detected to output the simultaneous ranging data;

the vehicle detection module is used for comparing the absolute values of the differences with a set difference threshold respectively, and generating a vehicle existence signal when the absolute values of the differences are smaller than the difference threshold.

Preferably, the difference threshold is configured as any parameter of 20-50 cm.

The invention provides a charging pile fault detection system which comprises an operation signal acquisition unit, a timing unit, a fault detection unit, a charging detection unit and the vehicle detection device, wherein the operation signal acquisition unit is used for acquiring a charging state of a charging pile;

the operation signal acquisition unit is used for acquiring a charging operation signal;

the timing unit is used for timing under the triggering of the vehicle existence signal;

the charging detection unit is used for detecting whether charging current or charging voltage is output from the charging pile;

the fault detection unit comprises a first fault detection module, and the first fault detection module is used for: and generating a suspected fault judgment when the charging detection unit does not detect the output of the charging current or the charging voltage within a first set time after the operation signal acquisition unit acquires the charging operation signal, and generating fault information when the accumulated frequency of the suspected fault judgment exceeds two times.

Preferably, the fault detection unit includes a second fault detection module, and the second fault detection module is configured to: when detecting that a current user carries out charging operation of a nearby charging pile, generating fault information of the current charging pile.

Preferably, the fault detection unit includes a third fault detection module, and the third fault detection module is configured to: and when the vehicle leaving signal is detected within a second set time after the operation signal acquisition unit acquires the charging operation signal, generating fault information.

Preferably, including being used for setting up the infrared pyroelectric sensor who charges the rifle side on filling electric pile, infrared pyroelectric sensor is connected with the fault detection unit.

Preferably, the charging system comprises an interaction unit, wherein the interaction unit is used for recording a timing value of a corresponding timing unit when the operation signal acquisition unit acquires the charging operation signal, comparing the timing value with a set time threshold, and generating interaction information when the timing value is smaller than the time threshold.

Preferably, the charging operation signal includes a gun lifting operation signal, a code scanning operation signal and an interface operation signal of the charging gun.

The invention also provides a charging pile, which comprises the charging pile fault detection system.

The invention has the beneficial effects that:

the charging pile fault detection system can timely and effectively judge whether a fault exists in the charging pile based on detection of parking behaviors of users and a charging use process, and the found fault is not limited to a certain specific fault type and can represent the whole fault of the charging pile to a certain extent. In addition, the charging pile fault detection system ensures the effectiveness of fault judgment based on effective and stable vehicle detection devices. Furthermore, the implementation cost of the invention is relatively low, which is beneficial to popularization and application.

Description of the drawings:

FIG. 1 is a block diagram of a vehicle detecting device according to an embodiment of the present invention;

FIG. 2 is a schematic view of a usage scenario of a vehicle detection device according to an embodiment of the present invention;

FIG. 3 is a schematic view of a vehicle in a parking space in a normal parking state;

FIG. 4 is a schematic diagram of a maximum detection range of the range detection unit;

FIG. 5 is a schematic diagram of pedestrian interference in a parking space;

FIG. 6 is a schematic view of a vehicle in a parking space in an inclined parking state;

fig. 7 is a block diagram of a charging pile fault detection system according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-7, the present invention provides the following embodiments:

the embodiment provides a vehicle detection device, which comprises a first distance detection unit, a second distance detection unit and a processing unit;

the detection direction of the first distance detection unit 1 is parallel to the detection direction of the second distance detection unit 2, and the first distance detection unit and the second distance detection unit have a certain separation distance L1 in the horizontal direction perpendicular to the detection direction;

Referring to fig. 2, as a typical application scenario of the present embodiment, the provided distance-based vehicle detection apparatus may be applied to detect whether there is a parked vehicle 3 in a parking space of a parking lot, that is, whether the parking space is occupied by the vehicle 3. Thus, the first and second

distance detecting units

1 and 2 in this embodiment are generally disposed on the charging pile or near the charging pile at a certain height from the ground. First range finding unit 1 and second range finding unit 2 can adopt the range detection sensor, can realize range detection to being in its effective detection range's object, and as preferred, the range finding unit can adopt infrared distance measuring sensor or ultrasonic distance sensor. Further, in combination with the application scenario, the first distance detecting unit 1 and the second distance detecting unit 2 in this embodiment are respectively configured to sense and detect the left end and the right end of the vehicle 3, so that the detecting directions of the first distance detecting unit and the second distance detecting unit can be respectively directed to the positions close to the left side and the right side of the parking space on the parking space 4, the detecting directions of the first distance detecting unit 1 and the second distance detecting unit 2 can be set to be parallel, and the first distance detecting unit and the second distance detecting unit have a certain spacing distance L1 in the horizontal direction perpendicular to the detecting direction, so that the detection of a certain width can be realized by the first distance detecting unit and the second distance detecting unit.

It can be further understood that, when the processing unit receives the ranging data of the first distance detection unit and the second distance detection unit at the same time, it indicates that there is an object in the detection directions of the first distance detection unit 1 and the second distance detection unit 2 in the parking space, and in this case, it is very probable that there is a vehicle 3 in the parking space. In contrast, in the related prior art, as a traditional mode, a geomagnetic sensor is embedded in a parking space to sense a vehicle, the geomagnetic sensor is usually laid in advance before the parking space is built, otherwise, the geomagnetic sensor is inconvenient to add in a later period, and the construction cost is high; in addition, the method also comprises the steps of shooting the parking space based on the camera to obtain a parking space image, and further analyzing and processing the image to identify whether a vehicle exists in the parking space, wherein the mode has relatively high investment cost; simultaneously, for reduce cost, still appeared carrying out the scheme that the vehicle response was surveyed based on infrared or ultrasonic detection device, through a detection device who aims at in the parking stall, realized that there is the detection of object in the parking stall, the problem that this mode exists is exactly that the misdetection appears easily, for example when appearing the pedestrian in idle parking stall, can the misdetection be the vehicle. Through setting up two distance detection units in this embodiment, can form the detection of certain width, effectively avoided the device to the false detection of pedestrian or other interferent, greatly promoted the reliability of testing result.

Further preferably, as shown in fig. 3, the value of the separation distance L1, which is understood to be the detection of the width by the first and second

distance detection units

1 and 2 to a certain extent, may be set to any one of 1m to 2.2 m. It can be understood that, the spacing distance can be reasonably set according to the parking space width L3 or the width L2 of the vehicle, and the spacing distance L1 is set to be not less than 1m in the embodiment, so that the false detection of objects with the width less than 1m in the vacant parking space, such as pedestrians, can be effectively avoided, and meanwhile, the purpose that the spacing distance is not more than 2.2m is to avoid the false detection of objects outside the parking space and the interference of the detection result.

As a preferred embodiment, the first distance detection unit and the second distance detection unit each have a detection threshold module, the detection threshold module is configured to set a detection distance threshold of the distance detection unit, and the detection distance threshold is set to any one parameter of 3-6 m. It is understood that the detection distance threshold of the distance detection unit refers to the maximum distance that the distance detection unit performs detection, that is, the distance detection unit is configured to perform effective distance detection on the object within a distance range smaller than the detection distance threshold, and not to detect the object larger than the detection distance threshold. Referring to fig. 4, it should be further noted that, in order to meet the parking requirements of different types of vehicles, the length of the parking space in the current public parking lot is usually about 5-7M, and in this embodiment, the detection distance threshold (M in fig. 4) is set to any parameter of 3-6M, so that the distance detection unit can effectively detect the vehicle in the parking space, and meanwhile, the interference of objects other than the corresponding parking space, such as a parked vehicle in an opposite parking space or a vehicle 3 running by the vehicle, to the detection is avoided. As a further preference, the detection distance threshold is set to 2/3 which is the length of the parking space, that is, 1/3 when the vehicle enters the space, the distance detection unit can detect the vehicle, indicating that the vehicle has a high probability of entering the space to park, rather than passing the vehicle 3.

Referring to FIG. 1, in some preferred embodiments, the processing unit includes a difference detection module and a vehicle detection module;

the difference detection module is electrically connected with the first distance detection unit and the second distance detection unit respectively to detect and acquire ranging data, and is configured to calculate and generate differences of a plurality of simultaneous ranging data when the first distance detection unit and the second distance detection unit are continuously detected to output the simultaneous ranging data; that is, when the first and second distance detection units simultaneously detect an object and generate ranging data, a difference value of the ranging data generating the first and second distance detection units is calculated;

It can be understood that, in some embodiments, by providing two distance detection units to form detection with a certain width, false detection of a non-vehicle interfering object by a vehicle detection device can be effectively avoided to a great extent. However, in an actual parking scene, there still exists a situation that both the two distance detection units detect the object but the detected object is not the vehicle, and therefore, in this embodiment, the difference detection module is configured to calculate the difference value of the multiple simultaneous distance measurement data only when it continuously detects that the first distance detection unit and the second distance detection unit output the simultaneous distance measurement data, which can avoid the situation that the dynamic object passes through the parking space and causes false detection, as shown in fig. 5, for example, when multiple pedestrians 6 walk through the parking space, the situation that two distance detection units simultaneously detect the distance measurement data is not a small probability event, however, since the pedestrians usually just pass through, the situation that two distance detection units simultaneously detect the distance measurement data is not persistent, and the vehicle based on the parking purpose enters the parking space, the two distance detection units can continuously detect the vehicle at the same time. Furthermore, in order to reduce false detection and ensure detection efficiency, the duration of the detection of the difference detection module can be set to 60-90 s. Further, when the two distance detection units can continuously detect the object to form the distance measurement data at the same time, the actually detected object has a certain probability when the object is not the vehicle, therefore, in order to further reduce the occurrence of false detection, the difference value detection module calculates and generates the difference value of the distance measurement data of the first distance detection unit and the distance measurement data of the second distance detection unit, then the vehicle detection module compares the difference value threshold value set by the absolute value of the difference value, and when the absolute value of the difference value is smaller than the difference value threshold value, the vehicle existence signal is generated. In an actual parking scene, a vehicle usually backs into a garage, and when the vehicle is not parallel to a parking space line, the distance measurement data detected by the two distance detection units usually have a certain difference value, which indicates that the vehicle is driving into the parking space. In this embodiment, when the absolute values of the difference values are all smaller than the difference threshold value, a vehicle existence signal is generated, so that the vehicle parking can be well pointed to specific features formed, and the accuracy of the detection result is improved.

As a further preference, the difference threshold is set to any parameter of 20-50 cm. It is understood that when the absolute value of the difference is larger than the difference threshold set in the present embodiment, the detected object is basically excluded from being a vehicle, and the absolute value of the difference is set to allow fluctuation within a range for better corresponding to the actual parking situation, because based on the driving technology difference of the vehicle driver, the situation that the vehicle body is not parallel to the parking space lines on both sides after the parking is completed is inevitable, and referring to the parking state shown in fig. 6, S is the difference of the distance measurement data of the first distance detection unit and the second distance detection unit in this state. Therefore, the difference threshold value is set to be a value within the range of 20-50cm, so that better balance can be achieved, and the accuracy of the detection result is ensured.

Referring to fig. 7, an embodiment of the present invention further provides a charging pile fault detection system, including an operation signal obtaining unit, a timing unit, a fault detection unit, a charging detection unit, and the vehicle detection device described above;

It should be noted that the charging operation signal acquired by the operation signal acquiring unit in the present embodiment is used to indicate that the user performs the relevant charging operation, that is, the generation of the charging operation signal indicates that the user has the intention to charge. As an executable manner, the source of the charging operation signal may be generated based on the gun lifting operation of the charging gun by the user, for example, the charging operation signal is a switch signal generated after the charging gun is operated, and may be specifically configured to: a charging pressing switch is arranged on the side of the charging gun, a user presses the switch to generate a switch signal, and the operation signal acquisition unit acquires the switch signal and takes the signal as a charging operation signal. As another executable manner, the source of the charging operation signal may be generated based on a code scanning operation performed by a user on a charging two-dimensional code disposed on the charging pile through an APP of the mobile terminal. As another executable manner, the source of the charging operation signal may be generated based on a user performing an interactive operation on an interface operating system of the charging pile, and may be specifically configured to acquire an operation signal generated by the user performing an interface operation on the interface operating system, and use the operation signal as the charging operation signal.

It should be further noted that, in the above embodiment, after the vehicle detection module of the vehicle detection device generates the vehicle presence signal, it indicates that the vehicle has parked in the parking space, and the timing unit starts to perform timing under the trigger of the vehicle presence signal, where the timing may be used as a basis for the parking time of the vehicle. Furthermore, the charging detection unit is used for detecting whether charging current or charging voltage is output from the charging pile, and whether charging is successfully carried out by a user can be represented.

It can also be understood that, if the charging current or the charging voltage output is not detected by the charging detection unit within the first set time after the operation signal acquisition unit acquires the charging operation signal, which indicates that the user performs the corresponding charging operation after parking is completed, but the charging pile does not start to be charged within the set time, the reason may be that a charging fault occurs in the charging pile, and of course, there is a small probability that the charging operation of some users is not skilled, or the user performs other reasons such as a short-time pause after the operation, and therefore, the suspicion of the fault is generated at this time. In order to further increase the reliability of suspected fault judgment, the first set time is set to be not less than 10 minutes, so that the condition of the small probability can be greatly eliminated, and the correspondence between the caused reason and the fault of the charging pile is stronger. Furthermore, when the number of times of generation of the suspicion of the fault is determined to be multiple times, the possibility that the charging fault exists in the charging pile is greatly increased. In order to balance the accuracy and timeliness of fault detection, the fault information is recommended to be generated when the accumulated generation times of the suspected fault judgment exceeds 3 times by combining practical experience.

In some preferred embodiments, the fault detection unit further comprises a second fault detection module, the second fault detection module is configured to: when detecting that a current user carries out charging operation of a nearby charging pile, generating fault information of the current charging pile. It can be understood that, the user usually need to swipe the card before charging, scan the two-dimensional code or carry out corresponding operation of charging through the APP that removes the end, the user fills electric pile at present and carries out the operation of charging back, user's operation record and identity can be by filling electric pile fault detection system and record, when this user has carried out near filling electric pile operation of charging, its operation record and identity are recorded again equally, second fault detection module can compare the user identity of two operation records, when judging for same user, generate the fault information of filling electric pile at present. It can be understood that the judgment mode is judged based on the specific operation behavior of the user, and the reason for causing the user to perform the operation behavior corresponds to the charging fault of the current charging pile in practice at a high probability, so that the charging pile fault can be detected more efficiently and accurately through the second fault detection module, and the detection result is more reliable.

In some preferred embodiments, the fault detection unit comprises a third fault detection module, the third fault detection module is configured to: and when the vehicle leaving signal is detected within a second set time after the operation signal acquisition unit acquires the charging operation signal, generating fault information. Further, the second setting time is preferably not more than 5 minutes, and more preferably, the second setting time is set to any time value within a range of 1 to 5 minutes. It can be understood that after the operation signal acquiring unit acquires the charging operation signal, it indicates that the user has the charging intention, and after the charging operation is performed, the user is driven to leave within a short time, which indicates that the charging fault occurs in the current charging pile, and the charging of the user is unsuccessful. Further, the vehicle exit signal may be generated by the vehicle detection device, for example, when the first distance detection unit and/or the second distance detection unit of the vehicle detection device does not detect the ranging data, the vehicle detection device outputs the vehicle exit signal. In this embodiment, can be comparatively high-efficient, accurate detection to fill electric pile trouble through third fault detection module to the testing result is also comparatively reliable.

In some preferred embodiments, fill electric pile fault detection system still includes and is used for setting up the infrared pyroelectric sensor who charges the rifle side on filling electric pile for whether the response detects that there is the pedestrian to be close to and fills electric pile. Further, as an embodiment, in order to enhance the reliability determination of whether the user performs the charging operation, after the operation signal acquisition unit acquires the charging operation signal, whether the output signal of the infrared pyroelectric sensor is acquired at the same time is used as the auxiliary determination condition. Specifically, the first fault detection module is configured to: and generating suspected fault judgment when the charging detection unit does not detect the output of the charging current or the charging voltage within a first set time after the operation signal acquisition unit acquires the charging operation signal and the infrared pyroelectric sensor generates the output signal. In another specific example, the third failure detection module is configured to: and generating fault information when the operation signal acquisition unit acquires the charging operation signal and detects that the vehicle leaves the signal within a second set time after the infrared pyroelectric sensor generates the output signal.

In some preferred embodiments, the charging pile fault detection system further includes an interaction unit, where the interaction unit is configured to record a timing value of a timing unit corresponding to the operation signal obtaining unit obtaining the charging operation signal, compare the timing value with a set time threshold, and generate interaction information when the timing value is smaller than the time threshold, where the interaction information is used to remind a user that a current parking space is a parking pile dedicated parking space, and the user does not need to leave in a charging demand, or warn the user that parking is not charged and parking is not required to be charged and parking fee is not charged and parking is required to be charged and parking fee is not charged.

In the description of the embodiments of the invention, the particular features, structures, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

In the description of the embodiments of the present invention, it is to be understood that "-" and "-" denote ranges of two numerical values, and the ranges include endpoints. For example, "A-B" means a range greater than or equal to A and less than or equal to B. "A to B" means a range of not less than A and not more than B.

In the description of the embodiments of the present invention, the term "and/or" herein is only one kind of association relationship describing an associated object, and means that there may be three kinds of relationships, for example, a and/or B, and may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A vehicle detection device is characterized by comprising a first distance detection unit, a second distance detection unit and a processing unit;

the first distance detection unit and the second distance detection unit are arranged at positions close to the charging pile and have a certain height from the ground;

the processing unit is used for judging whether a vehicle exists according to the ranging data of the first distance detection unit and the second distance detection unit;

the numerical value of the spacing distance is set to be any parameter of 1 m-2.2 m;

the first distance detection unit and the second distance detection unit are respectively provided with a detection threshold module, the detection threshold module is used for setting a detection distance threshold of the distance detection unit, and the detection distance threshold is set to be any parameter of 3-6 m;

the processing unit comprises a difference detection module and a vehicle detection module;

2. The vehicle detection apparatus of claim 1, wherein the difference threshold is configured as any parameter of 20-50 cm.

3. A charging pile fault detection system, characterized by comprising an operation signal acquisition unit, a timing unit, a fault detection unit, a charging detection unit and the vehicle detection device of claim 1;

4. The charging pile fault detection system of claim 3, wherein the fault detection unit comprises a second fault detection module, and the second fault detection module is configured to: when detecting that a current user carries out charging operation of a nearby charging pile, generating fault information of the current charging pile.

5. The charging pile fault detection system of claim 3, wherein the fault detection unit comprises a third fault detection module, and the third fault detection module is configured to: and when the vehicle leaving signal is detected within a second set time after the operation signal acquisition unit acquires the charging operation signal, generating fault information.

6. The charging pile fault detection system according to claim 3, comprising an infrared pyroelectric sensor arranged on the charging pile on the charging gun side, wherein the infrared pyroelectric sensor is connected with the fault detection unit.

7. A charging pile comprising the charging pile failure detection system of claim 3.