Hardware system for multi-vehicle traffic control and use method

Abstract

The invention discloses a hardware system for multi-vehicle traffic control and a use method, and relates to the technical field of crown block systems. The system comprises a control unit, an input unit and an output unit, hardware materials contained in confluence points corresponding to a hardware system are infrared equipment and proximity sensors, the infrared equipment is used for interacting with the crown block and controlling starting and stopping of the crown block while obtaining crown block information, and the proximity sensors are used for sensing whether the crown block passes or not; according to the invention, through the specific execution scheme of the infrared device and the proximity sensor in the hardware system for multi-vehicle traffic management control, the control rules of single-side priority release-default high-speed rail, high-priority priority passage, entrance of abnormal vehicles into a dangerous area and passage prohibition are formed, and meanwhile, user-defined setting is supported, so that not only can traffic collision be effectively prevented, but also the traffic safety is improved. And the functions of single-side track priority passing and high-priority priority passing can be effectively realized, and meanwhile, the production efficiency is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of overhead crane systems, and in particular to a hardware system for multi-vehicle traffic control and a use method thereof. Background Art

[0002] The Overhead Hoist Transfer (OHT) system is a new type of handling equipment system that uses modern technologies such as full automation and computer control and relies on the OHT suspension transportation system. It is currently widely used in semiconductor workshops and automated warehouses. Its main features include high automation, high speed (up to 5m / s), and the ability to achieve unmanned handling operations;

[0003] There are many confluences (i.e., vehicles on two tracks converge onto the same track, and the confluence point is called the confluence point) and divergences in the path of the OHT system.

[0004] The existing OHT system basically still relies on pure software for scheduling, and performs traffic control at confluences and divergences (hereinafter referred to as soft traffic control). However, soft traffic control is often subject to network signals. Once the network signal is unstable, it will cause the control signal to fail or be delayed, which will lead to a collision and cause heavy losses. In response to the drawbacks of soft traffic control, many manufacturers have adopted hardware traffic control combined with soft traffic control to dispatch vehicles. However, the hardware traffic control of various manufacturers can only achieve that only one vehicle is moving in the control area. As long as there is a car in the control area, all the cars that come later in the channels on both sides of the confluence point will wait, which greatly reduces the production efficiency. In response to the above problems, the inventor proposes a hardware system and method for using multi-vehicle traffic control to solve the above problems. Summary of the invention

[0005] In order to solve the problem of low production efficiency caused by vehicle crashes due to unstable network signals of soft traffic control, the purpose of the present invention is to provide a hardware system for multi-vehicle traffic control and a method for using the system.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions: a hardware system for multi-vehicle traffic control, including a control unit, an input unit and an output unit. The hardware materials contained in each confluence point corresponding to the hardware system are infrared equipment and proximity sensors. The infrared equipment is used to interact with the overhead crane to control the start and stop of the overhead crane while obtaining the overhead crane information. The proximity sensor is used to sense whether there is an overhead crane passing by.

[0007] Preferably, the number of the infrared devices is 4, and the number of the proximity sensors is 5.

[0008] A method for using a hardware system for multi-vehicle traffic control comprises the following steps:

[0009] S1. When the first infrared device on both sides of the channel receives the overhead crane information, it stores the vehicle information and saves it to the corresponding reservation list, and the number of vehicles increases by 1;

[0010] S2. When the first proximity sensor of the two side channels detects the passing of the overhead crane, it takes out the first vehicle information from the corresponding reservation list and stores it in the waiting list. The number of vehicles in the two lists is reduced by one and increased by one respectively. At the same time, the traffic signal of the current channel is determined (red light: stop, green light: pass). If it is a green light, the infrared device of the opposite channel sends a red light information. If it is a red light, the vehicle in the current channel stops and waits for the signal to turn green.

[0011] S3. When the second proximity sensor on the two side channels detects the overhead crane passing by, it takes out the first vehicle information from the corresponding waiting list and stores it in the converging list. The number of vehicles in the two lists is reduced by one and increased by one respectively. At the same time, the traffic signal of the current channel is determined. If it is a green light, the traffic signal remains unchanged. If it is a red light, the infrared devices on both side channels all send stop signals.

[0012] S4. When the proximity sensor behind the confluence point detects that the overhead crane has passed, the first vehicle information is deleted from the confluence list, and at the same time, it is determined whether there are vehicles in the waiting lists on both sides and in the confluence list; each scenario is determined and the start / stop signal is sent according to the following steps.

[0013] Preferably, in S4, each scene determines and sends a start / stop signal, and the specific determination steps are as follows:

[0014] S41, assuming that channel A is a high-speed track and channel B is a low-speed track, and there are no vehicles in the three linked lists, then both PIOs on both sides send passing signals;

[0015] S42: If there is no vehicle in the waiting list on the B side, the PIO sending signals on both sides remain unchanged;

[0016] S43, there is a vehicle in the waiting list on the B side.

[0017] Preferably, the priority determination rules are as follows:

[0018] If the light on channel A is green and the light on channel B is red, in order to ensure that the high-priority vehicle has priority over the vehicles in the waiting list on the B side, it is determined whether the priority of the vehicle on the waiting list and the reservation list on the A side is higher. If it is higher, the first infrared device on the A side sends a stop signal, and the second infrared device continues to maintain the pass signal. After the vehicles in the converging list and the waiting list on the A side are empty, the second infrared device on the B side sends a pass signal, and the first infrared device continues to maintain the stop signal. After the vehicles in the converging list and the waiting list on the B side are cleared, the signal changes. If the priority of the B side is lower than that of the vehicle on the A side, the existing communication signal continues to be maintained.

[0019] If the light on channel B is green and channel A is red, the number of vehicles in the waiting list on side A is determined. If there are no vehicles, the existing signal is maintained. If there are vehicles, in order to ensure priority release on one side (default high-speed rail), the first infrared device on side B sends a stop signal and the second continues to send a pass signal. After the vehicles in the converging list and the waiting list on side B are empty, the first infrared device on side A continues to send a stop signal, but the second infrared device sends a pass signal. After the vehicles in the converging list and the waiting list on side A are cleared, the signal changes.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] In the present invention, through the specific implementation scheme of the infrared equipment and proximity sensors in the hardware system of multi-vehicle traffic control, a control rule of single-side priority release - default high-speed rail, high-priority priority passage and abnormal vehicles entering the danger zone and prohibiting passage is formed, and customized settings are supported at the same time, which can not only effectively prevent collisions, but also effectively realize the functions of single-side track priority release and high-priority priority passage, and at the same time, effectively improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a distribution diagram of the infrared device and the proximity sensor of the present invention.

[0024] Figure 2 It is a schematic diagram of the infrared device and the proximity sensor of the present invention.

[0025] Figure 3 This is a schematic diagram of the priority processing and one-side priority release of the present invention. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Example: Figure 1-3As shown, the present invention provides a hardware system for multi-vehicle traffic control, including a control unit, an input unit and an output unit. The hardware materials contained in each confluence point corresponding to the hardware system are infrared equipment and proximity sensors. The infrared equipment is used to interact with an overhead crane to control the start and stop of the overhead crane while obtaining information about the overhead crane. The proximity sensor is used to sense whether an overhead crane is passing by.

[0028] The number of the infrared devices is 4, and the number of the proximity sensors is 5.

[0029] The present invention also provides a method for using a hardware system for multi-vehicle traffic control, comprising the following steps:

[0030] S1. When the first infrared device on both sides of the channel receives the overhead crane information, it stores the vehicle information and saves it to the corresponding reservation list, and the number of vehicles increases by 1;

[0031] S2. When the first proximity sensor of the two side channels detects the passing of the overhead crane, it takes out the first vehicle information from the corresponding reservation list and stores it in the waiting list. The number of vehicles in the two lists is reduced by one and increased by one respectively. At the same time, the traffic signal of the current channel is determined (red light: stop, green light: pass). If it is a green light, the infrared device of the opposite channel sends a red light information. If it is a red light, the vehicle in the current channel stops and waits for the signal to turn green.

[0032] S3. When the second proximity sensor on the two side channels detects the overhead crane passing by, it takes out the first vehicle information from the corresponding waiting list and stores it in the converging list. The number of vehicles in the two lists is reduced by one and increased by one respectively. At the same time, the traffic signal of the current channel is determined. If it is a green light, the traffic signal remains unchanged. If it is a red light, the infrared devices on both side channels all send stop signals.

[0033] S4. When the proximity sensor behind the confluence point detects that the overhead crane has passed, the first vehicle information is deleted from the confluence list, and at the same time, it is determined whether there are vehicles in the waiting lists on both sides and in the confluence list; each scenario is determined and the start / stop signal is sent according to the following steps.

[0034]

[0035] Table 1

[0036] In S4, each scene determines and sends a start / stop signal. The specific determination steps are as follows:

[0037] S41, assuming that channel A is a high-speed track and channel B is a low-speed track, and there are no vehicles in the three linked lists, then both PIOs on both sides send passing signals;

[0038] S42: If there is no vehicle in the waiting list on the B side, the PIO sending signals on both sides remain unchanged;

[0039] S43, there is a vehicle in the waiting list on the B side.

[0040] The priority determination rules are as follows:

[0041] If the light on channel A is green and channel B is red, in order to ensure that the high-priority vehicle has priority over the vehicles in the waiting list on the B side, it is determined whether the priority of the vehicle on the waiting list and reservation list on the A side is higher than that of the vehicle on the A side. If it is higher, the first infrared device on the A side sends a stop signal, and the second infrared device continues to maintain the pass signal. After the vehicles in the converging list and the waiting list on the A side are empty, the second infrared device on the B side sends a pass signal, and the first infrared device continues to maintain the stop signal. After the vehicles in the converging list and the waiting list on the B side are cleared, the signal changes (refer to 1). If the priority of the B side is lower than that of the vehicle on the A side, the existing communication signal continues to be maintained.

[0042] If the light on channel B is green and channel A is red, the number of vehicles in the waiting list on side A is determined. If there are no vehicles, the existing signal is maintained. If there are vehicles, in order to ensure priority release on one side (default high-speed rail), the first infrared device on side B sends a stop signal, and the second continues to send a pass signal. After the vehicles in the converging list and the waiting list on side B are empty, the first infrared device on side A continues to send a stop signal, but the second infrared device sends a pass signal. After the vehicles in the converging list and the waiting list on side A are cleared, the signal changes (refer to 1).

[0043] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A hardware system for multi-vehicle traffic control, comprising a control unit, an input unit and an output unit, characterized in that: The hardware materials included in each confluence point corresponding to the hardware system are infrared equipment and proximity sensors. The infrared equipment is used to interact with the overhead crane to control the start and stop of the overhead crane while obtaining the information of the overhead crane. The proximity sensor is used to sense whether there is an overhead crane passing by.

2. A hardware system for multi-vehicle traffic control as claimed in claim 1, characterized in that: The number of the infrared devices is 4, and the number of the proximity sensors is 5.

3. The method for using the hardware system for multi-vehicle traffic control as claimed in claim 1, characterized in that: The following steps are involved: S1. When the first infrared device on both sides of the channel receives the overhead crane information, it stores the vehicle information and saves it to the corresponding reservation list, and the number of vehicles increases by 1; S2. When the first proximity sensor of the two side channels detects the passing of the overhead crane, it takes out the first vehicle information from the corresponding reservation list and stores it in the waiting list. The number of vehicles in the two lists is reduced by one and increased by one respectively. At the same time, the traffic signal of the current channel is determined (red light: stop, green light: pass). If it is a green light, the infrared device of the opposite channel sends a red light information. If it is a red light, the vehicle in the current channel stops and waits for the signal to turn green. S3. When the second proximity sensor on the two side channels detects the overhead crane passing by, it takes out the first vehicle information from the corresponding waiting list and stores it in the converging list. The number of vehicles in the two lists is reduced by one and increased by one respectively. At the same time, the traffic signal of the current channel is determined. If it is a green light, the traffic signal remains unchanged. If it is a red light, the infrared devices on both side channels all send stop signals. S4. When the proximity sensor behind the confluence point detects that the overhead crane has passed, the first vehicle information is deleted from the confluence list, and at the same time, it is determined whether there are vehicles in the waiting lists on both sides and in the confluence list; each scenario is determined and the start / stop signal is sent according to the following steps.

4. The method for using the hardware system for multi-vehicle traffic control as claimed in claim 3, characterized in that: In S4, each scene determines and sends a start / stop signal. The specific determination steps are as follows: S41, assuming that channel A is a high-speed track and channel B is a low-speed track, and there are no vehicles in the three linked lists, then both PIOs on both sides send passing signals; S42: If there is no vehicle in the waiting list on the B side, the PIO sending signals on both sides remain unchanged; S43, there is a vehicle in the waiting list on the B side.

5. The method for using the hardware system for multi-vehicle traffic control as claimed in claim 4, characterized in that: The priority determination rules are as follows: If the light on channel A is green and the light on channel B is red, in order to ensure that the high-priority vehicle has priority over the vehicles in the waiting list on the B side, it is determined whether the priority of the vehicle on the waiting list and the reservation list on the A side is higher. If it is higher, the first infrared device on the A side sends a stop signal, and the second infrared device continues to maintain the pass signal. After the vehicles in the converging list and the waiting list on the A side are empty, the second infrared device on the B side sends a pass signal, and the first infrared device continues to maintain the stop signal. After the vehicles in the converging list and the waiting list on the B side are cleared, the signal changes. If the priority of the B side is lower than that of the vehicle on the A side, the existing communication signal continues to be maintained. If the light on channel B is green and channel A is red, the number of vehicles in the waiting list on side A is determined. If there are no vehicles, the existing signal is maintained. If there are vehicles, in order to ensure priority release on one side (default high-speed rail), the first infrared device on side B sends a stop signal and the second continues to send a pass signal. After the vehicles in the converging list and the waiting list on side B are empty, the first infrared device on side A continues to send a stop signal, but the second infrared device sends a pass signal. After the vehicles in the converging list and the waiting list on side A are cleared, the signal changes.

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