阅读说明：本技术 一种洗车机及车辆位置监控方法 (Car washer and vehicle position monitoring method ) 是由 范春林 高志军 陈弘昌 于 2021-09-27 设计创作，主要内容包括：本发明公开了一种洗车机及车辆位置监控方法,包括控制器、电机和传送装置,所述传送装置由所述电机驱动并用于传送待洗车辆,所述电机上设置有编码器,所述编码器用于向控制器发送编码值,所述控制器与所述编码器电连接；所述控制器用于：获取所述编码器发送的编码值；基于所述编码值,确定待洗车辆的基础坐标；对获取到所述编码值后经过的时间进行计时得到位移时间；基于编码值对时间的变化率和位移时间,确定待洗车辆的位移坐标；将所述基础坐标和所述位移坐标相加得到待洗车辆的最终坐标。本发明克服坐标的测量精度受限于编码盘齿轮的机械结构的缺陷,实现高精度坐标定位,提升自动洗车过程中的安全性。(The invention discloses a car washer and a car position monitoring method, which comprises a controller, a motor and a transmission device, wherein the transmission device is driven by the motor and is used for transmitting a car to be washed; the controller is configured to: acquiring a coding value sent by the coder; determining the basic coordinates of the vehicle to be washed based on the coded values; timing the time after the coded value is obtained to obtain the displacement time; determining the displacement coordinate of the vehicle to be washed based on the time change rate and the displacement time of the coded value; and adding the basic coordinates and the displacement coordinates to obtain final coordinates of the vehicle to be washed. The invention overcomes the defect that the measurement precision of coordinates is limited by the mechanical structure of the coded disc gear, realizes high-precision coordinate positioning and improves the safety in the automatic car washing process.)

1. The car washer is characterized by comprising a controller, a motor and a conveying device, wherein the conveying device is driven by the motor and is used for conveying a car to be washed; wherein the controller is configured to:

acquiring a coding value sent by the coder;

determining the basic coordinates of the vehicle to be washed based on the coded values;

timing the time after the coded value is obtained to obtain the displacement time;

determining the displacement coordinate of the vehicle to be washed based on the time change rate and the displacement time of the coded value;

and adding the basic coordinates and the displacement coordinates to obtain final coordinates of the vehicle to be washed.

2. The car washer of claim 1, wherein the conveyor comprises a first apron conveyor and a second apron conveyor connected in series, the controller further configured to:

determining whether a vehicle to be washed exists on the second chain scraper conveyor;

if not, sending a starting instruction to the first chain plate conveyor; if so, a standby command is sent to the first apron conveyor.

3. The car washer of claim 2, further comprising a first light correlation sensor for sending a first signal to the controller in response to activation of the vehicle to be washed and a second signal to the controller when not activated, and a second light correlation sensor for sending a third signal to the controller in response to activation of the vehicle to be washed, the first light correlation sensor being disposed at an exit end of the second apron conveyor and the second light correlation sensor being disposed at an entrance end of the second apron conveyor;

the determining whether the second chain scraper conveyor has the vehicle to be washed specifically comprises:

after receiving the first signal, judging whether the second signal is received or not;

if yes, judging that the second chain plate conveyor does not have the vehicle to be washed, and if not, judging that the second chain plate conveyor has the vehicle to be washed; or

Determining whether the third signal is received before the first signal is received;

and if so, judging that the second chain plate conveyor is provided with the vehicle to be washed.

4. The car washer of claim 3, wherein the controller is further to:

after receiving the first signal, judging whether the second signal is received within a preset time;

and if not, sending an alarm instruction to the monitoring terminal, wherein the alarm instruction is used for indicating the monitoring terminal to send an alarm signal.

5. The car washer of claim 3, wherein the second light sensor is further configured to send a fourth signal to the controller when not triggered, the controller further configured to:

after receiving the third signal, judging whether the fourth signal is received within a preset time;

and if not, sending an alarm instruction to the monitoring terminal, wherein the alarm instruction is used for indicating the monitoring terminal to send an alarm signal.

6. A vehicle position monitoring method is applied to a car washer and is characterized in that the car washer comprises a controller, a motor and a transmission device, the transmission device is driven by the motor and is used for transmitting a vehicle to be washed, an encoder is arranged on the motor and is used for sending an encoding value to the controller, and the controller is electrically connected with the encoder; characterized in that the method comprises:

the controller acquires the coding value sent by the coder;

the controller determines the basic coordinates of the vehicle to be washed based on the coded value;

the controller times the time after the coded value is obtained to obtain the displacement time;

the controller determines the displacement coordinate of the vehicle to be washed based on the time change rate and the displacement time of the coded value;

and the controller adds the basic coordinate and the displacement coordinate to obtain a final coordinate of the vehicle to be washed.

7. The method of claim 6, wherein the conveyor comprises a first apron conveyor and a second apron conveyor connected in series, the method further comprising:

the controller determines whether a vehicle to be washed is on the second scraper chain conveyor;

if not, sending a starting instruction to the first chain plate conveyor; if so, a standby command is sent to the first apron conveyor.

8. The method of claim 7, wherein the car washer further comprises a first light correlation sensor and a second light correlation sensor, the first light correlation sensor is configured to send a first signal to the controller in response to the activation of the vehicle to be washed and a second signal to the controller when the first light correlation sensor is not activated, the second light correlation sensor is configured to send a third signal to the controller in response to the activation of the vehicle to be washed, the first light correlation sensor is disposed at an exit end of the second apron conveyor, and the second light correlation sensor is disposed at an entrance end of the second apron conveyor;

the controller determines whether a vehicle to be washed exists on the second chain scraper conveyor, and specifically comprises:

after receiving the first signal, the controller judges whether the second signal is received;

if yes, judging that the second chain plate conveyor does not have the vehicle to be washed, and if not, judging that the second chain plate conveyor has the vehicle to be washed; or

The controller judges whether the third signal is received before receiving the first signal;

and if so, judging that the second chain plate conveyor is provided with the vehicle to be washed.

9. The vehicle position monitoring method according to claim 8, characterized in that the method further comprises:

after receiving the first signal, the controller judges whether the second signal is received within a preset time;

and if not, the controller sends an alarm instruction to the monitoring terminal, wherein the alarm instruction is used for indicating the monitoring terminal to send an alarm signal.

10. A vehicle position monitoring method as claimed in claim 8, wherein the second light correlation sensor is further configured to send a fourth signal to the controller when not triggered, the method further comprising:

after receiving the third signal, the controller judges whether the fourth signal is received within a preset time;

and if not, the controller sends an alarm instruction to the monitoring terminal, wherein the alarm instruction is used for indicating the monitoring terminal to send an alarm signal.

Technical Field

The invention relates to the field of automatic car washing, in particular to a car washer and a car position monitoring method.

Background

Along with the rapid development of Chinese economy, the living standard of people is increasingly improved, China, as a large population country, the number of automobile reserves reaches 1.3 hundred million, automobiles need to be cleaned in the daily use process, the existing automobile technology adopts a manual cleaning mode and an automatic cleaning mode, the manual cleaning work efficiency is low, the cost is high, therefore, the adoption of the automatic cleaning mode is the development trend of modern automobile cleaning, the automobile is generally conveyed into the automobile cleaning machine by the automobile cleaning machine, the automobile is conveyed out of the automobile cleaning machine after being cleaned, the position of the automobile is changed in real time, if the position of the automobile is not well controlled, potential safety hazards exist, a gantry type automobile cleaning machine and a tunnel type automobile cleaning machine need to be monitored in real time for ensuring the automobile cleaning safety, and the tunnel type automobile cleaning machine generally conveys the automobile to each automobile cleaning area through a conveying platform and then conveys the automobile out of the automobile cleaning machine so as to realize the automatic automobile cleaning.

In the related art, the car washing process of the car washer is as follows: after the vehicle to be washed is in neutral, the vehicle is dragged by the chain plate to be conveyed forwards, the chain plate is driven by a motor, an encoder is arranged on the motor, the distance for dragging the vehicle by the chain plate to be conveyed forwards can be determined through an encoding value provided by the encoder, the distance can be used as a coordinate of the vehicle in a car washer, and the cleaning mechanism at the corresponding coordinate position is controlled to act according to the coordinate of the vehicle to complete the vehicle cleaning work.

In the method for monitoring the vehicle coordinates in the related art, the accuracy of determining the vehicle coordinates by using the encoder is not high, and higher operation requirements cannot be met.

Disclosure of Invention

It should be noted that, as a contribution of the present inventors, the present inventors found a reason why the accuracy of determining the coordinates of the vehicle using the encoder is not high: the minimum measurement unit of the vehicle coordinate is determined by the clearance of the coding disc gear of the encoder, namely in the technology of determining the vehicle coordinate by using the encoder, the measurement precision of the coordinate is limited by the mechanical structure of the coding disc gear, and the high-precision coordinate positioning cannot be realized.

The invention aims to provide a vehicle position monitoring method and a car washer, which can overcome the defect that the measurement precision of coordinates is limited by the mechanical structure of a code disc gear in a positioning system for determining vehicle coordinates by using an encoder, and realize high-precision coordinate positioning.

In order to achieve the purpose of the invention, the following technical scheme is provided:

in a first aspect, the invention provides a car washer, which comprises a controller, a motor and a transmission device, wherein the transmission device is driven by the motor and is used for transmitting a car to be washed; the controller is configured to:

acquiring a coding value sent by the coder;

determining the basic coordinates of the vehicle to be washed based on the coded values;

timing the time after the coded value is obtained to obtain the displacement time;

determining the displacement coordinate of the vehicle to be washed based on the time change rate and the displacement time of the coded value;

and adding the basic coordinates and the displacement coordinates to obtain final coordinates of the vehicle to be washed.

Compared with the prior art, the invention has the following beneficial effects: on the basis of determining the basic coordinates of the vehicle to be washed through the encoder, the displacement coordinates of the vehicle to be washed are further determined through a timing method, and the basic coordinates and the displacement coordinates are added to obtain the final coordinates of the vehicle to be washed. Compared with the prior art that the positioning precision of the encoder is limited by the mechanical structure of the encoding disc, the method can accurately determine the coordinate value between the gear gaps of the encoding disc of the encoder in a timing mode, and has higher positioning precision.

Further, conveyer is including the first chain scraper conveyor and the second chain scraper conveyor that connect gradually, the controller is still used for:

determining whether a vehicle to be washed exists on the second chain scraper conveyor;

if not, sending a starting instruction to the first chain plate conveyor; if so, a standby command is sent to the first apron conveyor.

Just allow the vehicle on the first chain scraper conveyor to enter into second chain scraper conveyor after judging not waiting to wash the vehicle on the second chain scraper conveyor, can avoid the vehicle to collide each other on second chain scraper conveyor.

The car washer further comprises a first light correlation sensor and a second light correlation sensor, the first light correlation sensor is used for responding to the trigger of the car to be washed and sending a first signal to the controller, and when the first light correlation sensor is not triggered, the second light correlation sensor is used for responding to the trigger of the car to be washed and sending a third signal to the controller, the first light correlation sensor is arranged at the outlet end of the second chain plate conveyor, and the second light correlation sensor is arranged at the inlet end of the second chain plate conveyor;

the determining whether the second chain scraper conveyor has the vehicle to be washed specifically comprises:

after receiving the first signal, judging whether the second signal is received or not;

if yes, judging that the second chain plate conveyor does not have the vehicle to be washed, and if not, judging that the second chain plate conveyor has the vehicle to be washed; or

Determining whether the third signal is received before the first signal is received;

and if so, judging that the second chain plate conveyor is provided with the vehicle to be washed.

Further, the controller is further configured to:

after receiving the first signal, judging whether the second signal is received within a preset time;

and if not, sending an alarm instruction to the monitoring terminal, wherein the alarm instruction is used for indicating the monitoring terminal to send an alarm signal.

Further, the second light correlation sensor is further configured to send a fourth signal to the controller when not triggered, and the controller is further configured to:

after receiving the third signal, judging whether the fourth signal is received within a preset time;

and if not, sending an alarm instruction to the monitoring terminal, wherein the alarm instruction is used for indicating the monitoring terminal to send an alarm signal.

When abnormal conditions such as wheel locking occur when a vehicle drives into the second chain plate conveyor from the first chain plate conveyor, the abnormal conditions such as wheel locking of the vehicle can be found in time by judging whether the fourth signal is received within the preset time, and the safety performance of the vehicle washing process is improved.

In a second aspect, the invention provides a vehicle position monitoring method, which is applied to a car washer, wherein the car washer comprises a controller, a motor and a transmission device, the transmission device is driven by the motor and is used for transmitting a vehicle to be washed, the motor is provided with an encoder, the encoder is used for sending an encoded value to the controller, and the controller is electrically connected with the encoder; the method comprises the following steps:

the controller acquires the coding value sent by the coder;

the controller determines the basic coordinates of the vehicle to be washed based on the coded value;

the controller times the time after the coded value is obtained to obtain the displacement time;

the controller determines the displacement coordinate of the vehicle to be washed based on the time change rate and the displacement time of the coded value;

and the controller adds the basic coordinate and the displacement coordinate to obtain a final coordinate of the vehicle to be washed.

Compared with the prior art, the invention has the following beneficial effects: on the basis of determining the basic coordinates of the vehicle to be washed through the encoder, the displacement coordinates of the vehicle to be washed are further determined through a timing method, and the basic coordinates and the displacement coordinates are added to obtain the final coordinates of the vehicle to be washed. Compared with the prior art that the positioning precision of the encoder is limited by the mechanical structure of the encoding disc, the method can accurately determine the coordinate value between the gear gaps of the encoding disc of the encoder in a timing mode, and has higher positioning precision.

Further, the conveyor comprises a first apron conveyor and a second apron conveyor connected in series, and the method further comprises:

the controller determines whether a vehicle to be washed is on the second scraper chain conveyor;

if not, sending a starting instruction to the first chain plate conveyor; if so, a standby command is sent to the first apron conveyor.

Just allow the vehicle on the first chain scraper conveyor to enter into second chain scraper conveyor after judging not waiting to wash the vehicle on the second chain scraper conveyor, can avoid the vehicle to collide each other on second chain scraper conveyor.

The car washer further comprises a first light correlation sensor and a second light correlation sensor, the first light correlation sensor is used for responding to the trigger of the car to be washed and sending a first signal to the controller, and when the first light correlation sensor is not triggered, the second light correlation sensor is used for responding to the trigger of the car to be washed and sending a third signal to the controller, the first light correlation sensor is arranged at the outlet end of the second chain plate conveyor, and the second light correlation sensor is arranged at the inlet end of the second chain plate conveyor;

the controller determines whether a vehicle to be washed exists on the second chain scraper conveyor, and specifically comprises:

after receiving the first signal, the controller judges whether the second signal is received;

if yes, judging that the second chain plate conveyor does not have the vehicle to be washed, and if not, judging that the second chain plate conveyor has the vehicle to be washed; or

The controller judges whether the third signal is received before receiving the first signal;

and if so, judging that the second chain plate conveyor is provided with the vehicle to be washed.

Further, the method further comprises:

after receiving the first signal, the controller judges whether the second signal is received within a preset time;

and if not, the controller sends an alarm instruction to the monitoring terminal, wherein the alarm instruction is used for indicating the monitoring terminal to send an alarm signal.

Further, the second light correlation sensor is further configured to send a fourth signal to the controller when not triggered, and the method further includes:

after receiving the third signal, the controller judges whether the fourth signal is received within a preset time;

and if not, the controller sends an alarm instruction to the monitoring terminal, wherein the alarm instruction is used for indicating the monitoring terminal to send an alarm signal.

When abnormal conditions such as wheel locking occur when a vehicle drives into the second chain plate conveyor from the first chain plate conveyor, the abnormal conditions such as wheel locking of the vehicle can be found in time by judging whether the fourth signal is received within the preset time, and the safety performance of the vehicle washing process is improved.

Further, the controller times the time elapsed after the code value is obtained to obtain the displacement time, specifically including;

and the controller times the time after the coded value is acquired in a hardware mode or a software mode to obtain the displacement time.

Further, the conveying device comprises a belt conveyor or a chain scraper conveyor.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Wherein:

FIG. 1 is a flow diagram of a vehicle location update method in one embodiment;

FIG. 2 is a partial schematic view of a car washer;

FIG. 3 is a flow chart of a vehicle location update method in another embodiment;

fig. 4 is an enlarged view at a in fig. 2.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, 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 application.

Along with the rapid development of Chinese economy, the living standard of people is increasingly improved, China, as a large population country, the number of automobile reserves reaches 1.3 hundred million, automobiles need to be cleaned in the daily use process, the existing automobile technology adopts a manual cleaning mode and an automatic cleaning mode, the manual cleaning work efficiency is low, the cost is high, therefore, the adoption of the automatic cleaning mode is the development trend of modern automobile cleaning, the automobile is generally conveyed into the automobile cleaning machine by the automobile cleaning machine, the automobile is conveyed out of the automobile cleaning machine after being cleaned, the position of the automobile is changed in real time, if the position of the automobile is not well controlled, potential safety hazards exist, a gantry type automobile cleaning machine and a tunnel type automobile cleaning machine need to be monitored in real time for ensuring the automobile cleaning safety, and the tunnel type automobile cleaning machine generally conveys the automobile to each automobile cleaning area through a conveying platform and then conveys the automobile out of the automobile cleaning machine so as to realize the automatic automobile cleaning.

In the prior art, the vehicle coordinates are positioned by the conveying platform in the whole process of the vehicle, and the size corresponding to the gear clearance between the coding discs of the encoder in the method for monitoring the vehicle coordinates is the minimum measurement unit, so that the precision is not accurate enough, and the safety of the vehicle in the automatic vehicle washing process is not guaranteed. As shown in fig. 4, which is an enlarged view at a in fig. 2, the motor 400 is provided with an encoder 4, the encoder 4 includes an encoder disk 41 and a vortex proximity switch 42; the encoding disk 41 is arranged on the motor 400, and the encoding disk 41 has a plurality of tooth structures 411; the encoding disk 41 and the vortex proximity switch 42 are arranged oppositely, when the tooth-shaped structure of the encoding disk 41 is close to the vortex proximity switch 42, the proximity switch receives a metal signal and sends the metal signal to the controller, when the tooth-shaped structure 411 of the encoding disk 41 runs to the vortex proximity switch 42, the vortex proximity switch 42 receives the metal signal, the controller receives a signal of the encoder 4, when the gap between two adjacent tooth-shaped structures 411 runs to the vortex proximity switch 42, the vortex proximity switch 42 cannot receive the metal signal, the controller cannot receive the signal of the encoder 4, and therefore the measuring accuracy is not high.

In one embodiment, a vehicle position monitoring method is provided and applied to a car washer.

As shown in figure 1 of the drawings, in which,

step 102, acquiring the encoded value sent by the encoder 4;

for example, the coded value Y sent by the coder 4 is obtained as 5500.

Specifically, the relationship k ═ Δ Y/Δ X between the amount of change Δ Y in the encoded value of the encoder 4 and the amount of change Δ X in the base coordinate is a preset known condition, and for example, k ═ 100, that is, the encoded value of the encoder 4 increases by 100 every time the amount of change in the base coordinate increases by 1.

When the vehicle to be washed triggers the first group of position sensors 202, the point is recorded as a basic coordinate origin, and a current first coding value corresponding to the point is preset. For example, when the vehicle to be washed is parked in place, the first set of position sensors 202 is triggered, and the encoder 4 is preset to have a code value Y0 of 500.

The controller calculates the code value corresponding to the displacement according to the acquired known conditions: y ═ Δ Y + Y0. For example, when the base coordinate variation amount is Δ X equal to 50, Y is 5500.

104, determining basic coordinates of the vehicle to be washed based on the coded values;

the controller, based on a preset known condition k ═ Δ Y/Δ X, can derive,

the conversion relation between the encoding value and the basic coordinate is as follows: x is (Y-Y0)/k, Y is the encoded value sent by the encoder 4, and X is the base coordinate of the position corresponding to the encoded value.

And the controller calculates the corresponding basic coordinates of the vehicle to be washed according to the acquired code values sent by the encoder 4.

For example, when the controller obtains the coded value Y from the encoder 4 as 5500, the base coordinates of the corresponding vehicle to be washed are calculated as X ═ 5500-.

Step 106, timing the time which passes after the code value is obtained to obtain the displacement time;

because the two tooth-shaped structures 411 have gaps, the coding value of the encoder 4 cannot accurately correspond to the displacement generated between the two gaps, and when the vehicle displacement variation is integral multiple of the gaps of the two tooth-shaped structures 411, a more accurate measurement result can be obtained; when the displacement of the vehicle is not an integral multiple of the gap between the two tooth-shaped structures 411, the displacement smaller than the gap distance between the two tooth-shaped structures 411 cannot be measured, and a measurement result with a large error is obtained.

For example, assuming that the gap between the two tooth-like structures 411 is 5, the minimum change amount of the code value is 500, as can be seen from the conversion relationship between the change amount Δ Y of the code value and the change amount Δ X of the displacement, that is, Δ Y is 100 Δ X. The coded value can only appear in integral multiples of 500, and the excessive part can not be counted, so that the measurement result is inaccurate.

It can be seen that the basic coordinates measured based on the encoded values are substantially uniform and discontinuous values, and the distance between adjacent points is the distance between adjacent tooth-like structures 411.

When one tooth-shaped structure 411 passes through the vortex proximity switch 42, the controller receives a command sent by the vortex proximity switch 42 and starts timing, and when the next tooth-shaped structure passes through the vortex proximity switch 42, the controller receives the command sent by the vortex proximity switch 42, stops timing of the period and starts timing of the next period. If the distance x between two adjacent tooth-like structures 411 is a known quantity and the speed v of the slat conveyor is a known quantity, then the time t ═ x/v when the gap between two adjacent tooth-like structures 411 passes through the eddy current proximity switch 42 can be obtained.

For example, when the condition x is 5 and v is 1, the time when two adjacent tooth-like structures 411 pass through the eddy current proximity switch 42 is t is 5.

Step 108, determining the displacement coordinate of the vehicle to be washed based on the time change rate and the displacement time of the coded value;

based on the fact that the chain plate conveyor advances at a constant speed, the displacement time between the two tooth structures 411 can be obtained through timing, and then a more accurate position can be obtained through calculation.

The distance x between the two tooth-like structures 411 is a known amount, the speed v is a known amount, and the displacement variation amount is obtained as Δ x ═ v Δ t.

For example, it is known that every 1 cm of variation of the displacement occurs, the variation of the corresponding code value is 100; when the distance between two adjacent tooth-like structures 411 is 5 cm, and the time of passage is 5 seconds, the amount of change of the code value in each second is 100, and the distance between two adjacent tooth-like structures 411 corresponds to 500 code values.

In the above example, the displacement variation of the vehicle to be washed is that when the tooth-shaped structures 411 pass through the proximity switch 42, the timer starts to count time, when the variation of the timer is 3 seconds, the proximity switch is located between the two tooth-shaped structures 411, the encoder 4 does not detect the displacement, and the controller calculates that the displacement occurring in the gap between the two tooth-shaped structures 411 corresponds to an encoding value of 100 × 3 — 300, and the corresponding displacement coordinate is 3 as the displacement coordinate of the vehicle to be washed.

And 110, adding the basic coordinates and the displacement coordinates to obtain final coordinates of the vehicle to be washed.

For example, the base coordinate is 50, the displacement coordinate is 3, and the final coordinate of the vehicle to be washed is 53.

The method can realize high-precision coordinate positioning of the vehicle to be washed, guarantee the washing effect in the vehicle washing process and improve the safety of the vehicle washing process.

In another embodiment, a flow chart of a vehicle location update method,

as shown in figure 3 of the drawings,

step 302, determining whether a vehicle to be washed exists on the second apron conveyor 22;

step 304, if not, sending a start instruction to the first scraper conveyor 20; if so, a standby command is sent to the first apron conveyor 20.

Specifically, the vehicle to be washed enters the first apron conveyor 20 and is parked in place, confirming whether there is a vehicle that has not left the second apron conveyor 22 in front, and if so, waiting, and if there is no vehicle on the second apron conveyor 22 in front, the vehicle to be washed can proceed. Three situations need to be considered, one being leaving, the second having left, and the third being that the car body is fully located in the second apron conveyor 22 and has not left.

In one embodiment, the second set of position sensors includes a first light correlation sensor 204 and a second light correlation sensor 206, the first light correlation sensor 204 is configured to send a first signal to the controller in response to activation of the vehicle to be washed and a second signal when not activated, the second light correlation sensor is configured to send a third signal to the controller in response to activation of the vehicle to be washed, the first light correlation sensor 204 is disposed at an exit end of the second apron conveyor 22, and the second light correlation sensor 206 is disposed at an entrance end of the second apron conveyor 22;

the determining whether the second scraper chain conveyor 22 has the vehicle to be washed specifically includes:

after receiving the first signal, judging whether the second signal is received or not;

if so, determining that no vehicle to be washed exists on the second chain plate conveyor 22, and if not, determining that the vehicle to be washed exists on the second chain plate conveyor 22; or

Determining whether the third signal is received before the first signal is received;

if yes, the vehicle to be washed on the second scraper chain conveyor 22 is judged.

Fig. 2 is a partial schematic view of a car washer, fig. 4 is an enlarged view of a position a in fig. 2, the car washer comprises a controller, a motor 400, a transmission device and a plurality of sets of position sensors, the transmission device is driven by the motor 400 and is used for transmitting a vehicle to be washed, an encoder 4 is arranged on the motor 400, the encoder 4 is used for sending an encoded value to the controller, the position sensors are used for sending position signals to the controller in response to the triggering of the vehicle to be washed, the controller is respectively electrically connected with the encoder 4 and the position sensors, and the plurality of sets of position sensors are arranged along the transmission direction of the vehicle to be washed according to a set distance relationship.

It should be noted that, as shown in fig. 2, the conveying device is used for driving the vehicle to convey from right to left. In particular, the conveyor comprises a belt conveyor or a scraper chain conveyor, the vehicle drives into the scraper chain conveyor from right to left, and at the entrance end, a group of sensors is arranged for determining that the vehicle to be washed is parked in place on the one hand and for determining a first code value currently sent by an encoder on the other hand, the sensors are marked as a first group of position sensors, and the position is taken as the origin of coordinates.

It should be noted that the position sensors are arranged in the conveying direction of the vehicle to be washed from right to left according to the set distance relationship, and the position sensors of the second group are any position sensors of the plurality of groups except the position sensor of the first group, and may be on the first chain conveyor 20 or the second chain conveyor 22, for example, the position sensors include a first light correlation sensor 204 arranged at the outlet end of the second chain conveyor 22 and a second light correlation sensor 206 arranged at the inlet end of the second chain conveyor 22.

The second group of position sensors are used for detecting whether the vehicle reaches a set position or not, when the vehicle reaches the set position, the position sensors are triggered to send position signals to the controller, and the position sensors can be light correlation sensors or proximity switches.

The car washer includes a first apron conveyor 20 and a second apron conveyor 22, with vehicles entering the first apron conveyor 20 from the right side and leaving the second apron conveyor 22 from the left side, and when a vehicle to be washed enters the first apron 20, the second apron conveyor 22 has another vehicle that has not yet left. In order to prevent the collision of two vehicles, the collision prevention monitoring of the vehicle washing process is required.

As shown in fig. 3, which is a flow chart of a vehicle position updating method, step 302, determines whether there is a vehicle to be washed on the second apron conveyor 22; step 304, if not, sending a start instruction to the first scraper conveyor 20; if so, a standby command is sent to the first apron conveyor 20. Specifically, when a vehicle to be washed enters the first apron conveyor 20 and is parked in place, it is necessary to confirm whether there is a vehicle that has not left the second apron conveyor 22 ahead, and if so, it waits, and if there is no vehicle on the second apron conveyor 22 ahead, the vehicle to be washed can proceed. Three situations need to be considered, one is leaving, the second is having left, and the third is that the car body is located entirely in the second apron conveyor 22 and has not left.

Specifically, in the first case, when a vehicle to be washed enters the first plate link 20 and arrives at and triggers the first group of position sensors 202, the first group of position sensors 202 send signals to the controller, and the controller judges whether a vehicle exists in the second plate link 22 in front, in one embodiment, a first light correlation sensor 204 is arranged at the outlet end of the second plate link 22, a second light correlation sensor 206 is arranged at the inlet end of the second plate link 22, and when the first light correlation sensor 204 is triggered, a first signal is sent to the controller to represent that the vehicle head on the second plate link 22 is triggered to the first light correlation sensor 204 and is ready to leave; in the second case, when the vehicle completely leaves the second apron conveyor 22, the first light correlation sensor 204 does not detect the vehicle, and sends a second signal to the controller indicating that the vehicle on the second apron conveyor 22 has left, and the controller sends a forward command to the vehicle to be washed on the first apron conveyor 20; in the third situation, before the vehicle of the second chain conveyor 22 does not touch the first optical correlation sensor 204, the controller will not receive the first signal nor the second signal, and it needs to determine whether there is a vehicle on the second chain conveyor 22 by the second optical correlation sensor 206, specifically, when the vehicle to be washed passes through the second optical sensor 206 of the second chain conveyor 22, the second optical sensor 206 detects the vehicle and sends a third signal to the controller, indicating that there is a vehicle entering the second chain conveyor 22. By monitoring whether there is a vehicle on the second apron conveyor 22, it is ensured that one car washer can wash multiple cars simultaneously, thereby reducing the possibility of collision and improving the efficiency and safety of the car washing process.

In one embodiment, where it is desired to ensure that a vehicle on the second apron conveyor 22 is not jammed upon exit, the controller determines whether the second signal is received within a preset time after receiving the first signal;

and if not, the controller sends an alarm instruction to the monitoring terminal, wherein the alarm instruction is used for indicating the monitoring terminal to send an alarm signal.

Specifically, a preset interval time is set between a first signal and a second signal, after the controller receives the first signal, if the preset interval time is exceeded and the second signal is not received, the controller indicates that the vehicle is clamped at the outlet end of the second chain conveyor 22, at the moment, the controller sends an alarm instruction to the monitoring terminal, the alarm instruction is used for indicating the monitoring terminal to send out an alarm signal, the monitoring terminal can be a display screen character prompt or a sound prompt, and the safety of the vehicle in a vehicle washing process is ensured through monitoring alarm.

In one embodiment, where it is desired to ensure that a vehicle does not jam as it enters the second apron conveyor 22, the second light correlation sensor 206 is further configured to send a fourth signal to the controller when not triggered, the method further comprising:

after receiving the third signal, the controller determines whether the fourth signal is received within a preset time;

and if not, the controller sends an alarm instruction to the monitoring terminal, wherein the alarm instruction is used for indicating the monitoring terminal to send an alarm signal.

Specifically, a preset interval time is set between the third signal and the fourth signal, after the controller receives the third signal, if the fourth signal is not received after the preset interval time is exceeded, the vehicle is blocked at the inlet end of the conveyor of the second chain plate 22, and at the moment, the controller sends an alarm instruction to the monitoring terminal, wherein the alarm instruction is used for indicating the monitoring terminal to send out an alarm signal, the monitoring terminal can be a display screen text prompt or a sound prompt, and the safety of the vehicle in a vehicle washing process is ensured through monitoring and alarming.

A car washer, the conveyor comprising a first apron conveyor 20 and a second apron conveyor 22 connected in series, the controller being further configured to:

determining whether a vehicle to be washed is present on the second apron conveyor 22;

if not, sending a starting instruction to the first chain scraper conveyor 20; if so, a standby command is sent to the first apron conveyor 20.

In one embodiment, the second set of position sensors includes a first light correlation sensor 204 and a second light correlation sensor 206, the first light correlation sensor 204 being configured to send a first signal to the controller in response to activation of the vehicle to be washed and a second signal to the controller when not activated, the second light correlation sensor 206 being configured to send a third signal to the controller in response to activation of the vehicle to be washed, the first light correlation sensor 204 being disposed at an exit end of the second apron conveyor 22, the second light correlation sensor 206 being disposed at an entrance end of the second apron conveyor 22;

the determining whether the second scraper chain conveyor 22 has the vehicle to be washed specifically includes:

after receiving the first signal, judging whether the second signal is received or not;

if so, determining that no vehicle to be washed exists on the second chain plate conveyor 22, and if not, determining that the vehicle to be washed exists on the second chain plate conveyor 22; or

Determining whether the third signal is received before the first signal is received;

if yes, the vehicle to be washed on the second scraper chain conveyor 22 is judged.

In one embodiment, the controller is further configured to:

after receiving the first signal, judging whether the second signal is received within a preset time;

and if not, sending an alarm instruction to the monitoring terminal, wherein the alarm instruction is used for indicating the monitoring terminal to send an alarm signal.

In one embodiment, the second light correlation sensor 206 is further configured to send a fourth signal to the controller when not triggered, the controller is further configured to:

after receiving the third signal, determining whether the fourth signal is received within a preset time;

and if not, sending an alarm instruction to the monitoring terminal, wherein the alarm instruction is used for indicating the monitoring terminal to send an alarm signal.

The embodiments of the apparatus and the method of the present invention are based on the same inventive concept, and are not described herein again.

In one embodiment, a computer-readable storage medium is proposed, having stored a computer program which, when executed by a processor, causes the processor to carry out the steps of the above-mentioned vehicle position updating method.

The invention provides a vehicle position monitoring method and a car washer, which can overcome the defect that the measurement precision of coordinates is limited by the mechanical structure of a coded disc gear in a positioning system for determining vehicle coordinates by using an encoder, and realize high-precision coordinate positioning.

The above description is only for the preferred embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can substitute or change the technical solution of the present application and the inventive concept thereof within the technical scope of the present application, and shall be covered by the scope of the present application. In addition, although specific terms are used herein, they are used in a descriptive sense only and not for purposes of limitation.