An automatic water sprinkling and cooling system for conveyors

Abstract

The present invention proposes an automatic conveyor water sprinkling and cooling system, belonging to the field of temperature control technology. The system comprises: a host computer, a control host, a temperature-sensing optical fiber, N water sprinkling solenoid valves, and a smoke sensor. The control host is connected to the host computer and the temperature-sensing optical fiber, and the control host is connected to the water sprinkling solenoid valves. The temperature-sensing optical fiber is laid along the centerline of the conveyor to monitor temperature data along the conveyor. N water sprinkling solenoid valves are arranged in sequence at preset intervals along the conveyor. Each water sprinkling solenoid valve is equipped with two analog input channels for collecting smoke data, which is transmitted to the control host via the water sprinkling solenoid valves. The control host communicates with the temperature-sensing optical fiber and the water sprinkling solenoid valves to detect temperature and smoke data along the conveyor. When the temperature and smoke data exceed preset values, the control host controls the corresponding water sprinkling solenoid valves to implement water sprinkling and cooling. The present invention enables regional monitoring of conveyor temperature and directional water sprinkling and cooling.

Description

Technical Field

[0001] The present invention relates to the technical field of temperature control, and more particularly to an automatic water sprinkling and cooling system for a conveyor. Background Art

[0002] Belt conveyors are essential conveying equipment in industries such as mines, coal washeries, cement plants, power plants, and ports, offering advantages such as continuous operation and high conveying efficiency. The safe, normal, and stable operation of conveyors is crucial to the smooth operation of mine production and transportation. During conveyor operation, abnormalities such as heating and fire caused by friction or slippage on the belt pose a serious threat to production and even mine safety. Therefore, it is crucial to implement a device that can monitor conveyor temperature and smoke in real time and automatically reduce the temperature.

[0003] Currently, the technical solution for conveyor temperature control typically utilizes a temperature measurement device, a communication-enabled solenoid valve, and a communication-enabled smoke sensor. Specifically, 1. Various temperature sensors are used to collect temperature data along the conveyor. 2. Smoke sensors are evenly distributed along the conveyor, connected by a single communication twisted-pair cable to collect all smoke data. The communication addresses of these smoke sensors must be configured individually. 3. Sprinkler solenoid valves are evenly distributed along the conveyor, connected by another communication twisted-pair cable. The communication addresses of these sprinkler solenoid valves also need to be configured individually.

[0004] However, this technical solution has the following defects:

[0005] (1) In the above solution, the sprinkler solenoid valve and the smoke sensor each use a communication bus to communicate with the host. This system topology is too complex, causing many inconveniences in installation, maintenance and use.

[0006] (2) The communication addresses of the sprinkler solenoid valves and smoke sensors need to be set one by one through a computer or a dial switch, and the communication addresses cannot be repeated. This method not only makes the solenoid valves non-universal and cannot be directly replaced, but also makes the operation extremely inconvenient and requires a lot of manpower. Summary of the Invention

[0007] In view of the problems existing in the prior art, the purpose of the present invention is to provide an automatic water sprinkling and cooling system for a conveyor, which realizes regional monitoring of the conveyor temperature and can perform directional water sprinkling and cooling.

[0008] To achieve the above-mentioned purpose, the present invention is implemented through the following technical solutions:

[0009] An automatic water sprinkling and cooling system for a conveyor includes: a host computer, a control host, a temperature-sensing optical fiber, N water sprinkling solenoid valves, and a smoke sensor; the control host is respectively connected to the host computer and the temperature-sensing optical fiber for signal communication, and the control host is connected to the N water sprinkling solenoid valves for signal communication via a communication bus; the temperature-sensing optical fiber is laid along the centerline of the conveyor to monitor temperature data along the conveyor; the N water sprinkling solenoid valves are arranged in sequence along the conveyor at preset intervals;

[0010] Each sprinkler solenoid valve is connected to two smoke sensors for collecting smoke data and transmitting it to the control host through the sprinkler solenoid valve; the control host communicates with the temperature-sensing optical fiber and the sprinkler solenoid valve to detect the temperature and smoke data along the conveyor, and when the temperature and smoke data exceed the preset values, it controls the corresponding sprinkler solenoid valve to sprinkle water for cooling.

[0011] Furthermore, the control host includes: a distributed optical fiber temperature measurement module, a CAN communication module and a control main board; the control main board is respectively connected to the distributed optical fiber temperature measurement module and the CAN communication module through an internal bus; the distributed optical fiber temperature measurement module is used for collecting temperature and locating positions along the conveyor;

[0012] The control mainboard is connected to the temperature-sensing optical fiber and the sprinkler solenoid valve signal through the CAN communication module to collect smoke and temperature data along the conveyor and control the sprinkler solenoid valve at the designated location;

[0013] The control main board is used to analyze and judge the numerical value and growth trend of smoke and temperature and to link the sprinkler solenoid valve to sprinkle water and cool down the designated position of the conveyor.

[0014] Furthermore, the temperature-sensitive optical fiber adopts 62.5 / 125 μm multimode optical fiber.

[0015] Furthermore, the temperature-sensitive optical fiber is divided into N 50-meter-long temperature-sensitive zones in sequence; the control host sets identification words for the first temperature-sensitive zone to the Nth temperature-sensitive zone and assigns values ​​of 1 to N in sequence.

[0016] Furthermore, N sprinkler solenoid valves are sequentially arranged in N temperature-sensing zones, and the control host sets an identification word for each sprinkler solenoid valve and assigns values ​​from 1 to N in sequence according to the temperature-sensing zone to which each sprinkler solenoid valve belongs.

[0017] Furthermore, the sprinkler solenoid valve includes: a single-chip microcomputer, a front-end interface, a back-end interface, a pulse control circuit, a first pulse input detection circuit, a second pulse input detection circuit, a pulse generating circuit, a power supply circuit, a first analog quantity acquisition channel isolation circuit, a second analog quantity acquisition channel isolation circuit, a device type selection switch, and a solenoid valve coil control circuit; the single-chip microcomputer is respectively connected to the pulse control circuit, the first pulse input detection circuit, the second pulse input detection circuit, the pulse generating circuit, the power supply circuit, the first analog quantity acquisition channel isolation circuit, the second analog quantity acquisition channel isolation circuit, the device type selection switch, and the solenoid valve coil control circuit; the front-end interface is respectively connected to the pulse control circuit, the first pulse input detection circuit, and the communication bus, the back-end interface is respectively connected to the pulse control circuit, the second pulse input detection circuit, and the communication bus, and the pulse sending circuit is respectively connected to the pulse control circuit and the back-end interface;

[0018] Furthermore, the power supply circuit is used to convert the input power into the power required for the normal operation of the microcontroller, various functional circuits, and the solenoid valve coil; the first analog acquisition channel isolation circuit and the second analog acquisition channel isolation circuit are used to detect two smoke signals and perform signal isolation between the analog signals and the microcontroller; the device type selection switch is used to determine whether the current sprinkler solenoid valve is the end device, that is, the terminal device; the solenoid valve coil control circuit is used to drive the solenoid valve coil to achieve control of the solenoid valve.

[0019] Furthermore, the control host is also used to automatically sort and allocate communication addresses from near to far according to the distance between the sprinkler solenoid valve and the host through a preset sprinkler solenoid valve address automatic sorting and allocation process.

[0020] Furthermore, the preset automatic sorting and allocation process of the sprinkler solenoid valve addresses specifically includes the following steps: S1: after the system is running, the control host sends a pulse signal with ID 1 to the communication bus;

[0021] S2: The pulse signal is received and locked by the sprinkler solenoid valve closest to the pulse signal source; the current sprinkler solenoid valve analyzes the ID value of the pulse signal through the pulse input detection circuit and defines its own address as the analyzed ID value;

[0022] S3: Determine whether the current sprinkler solenoid valve is a terminal device. If the current device is a terminal device, the address allocation is completed and the program exits directly. If not, proceed to the next step.

[0023] S4: Close the pulse control circuit of the current sprinkler solenoid valve;

[0024] S5: The current sprinkler solenoid valve adds 1 to its ID and sends the new ID value to the pulse generating circuit;

[0025] S6: The pulse sending circuit generates a corresponding pulse signal according to the current ID value and sends it to the communication bus, and executes step S2.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1. For discrete measuring points along the belt conveyor, the present invention uses a distributed temperature measurement host and temperature-sensing optical fiber to continuously monitor the temperature along the conveyor, thereby achieving continuous and real-time monitoring of the temperature of the entire conveyor line.

[0028] 2. The sprinkler solenoid valve of this invention features two analog input channels, which can be hardwired to receive signals from two smoke sensors located in front and behind the valve. This allows for both collecting smoke data along the route and controlling the solenoid valve using a single communication line. The integrated sprinkler solenoid valve, which integrates analog data acquisition and communication, simplifies network topology and facilitates installation and use.

[0029] 3. The sprinkler solenoid valves designed in this invention feature automatic address assignment, eliminating the need for manual or individual address setting. During use, the control host automatically detects the addition or removal of sprinkler solenoid valves and reassigns communication addresses based on their distance from the control host, from nearest to furthest.

[0030] 4. This invention realizes regional monitoring and directional water sprinkling for cooling. The host computer divides the water sprinkling solenoid valves and temperature-sensing optical fibers into zones according to their actual physical locations. Smoke and temperature only trigger the solenoid valves in this zone.

[0031] It can be seen that compared with the prior art, the present invention has outstanding substantial features and significant progress, and the beneficial effects of its implementation are also obvious. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0033] Figure 1 It is a system structure diagram of a specific implementation method of the present invention.

[0034] Figure 2 It is an electrical block diagram of a sprinkler solenoid valve according to a specific embodiment of the present invention.

[0035] Figure 3 It is a schematic diagram of the automatic sorting and allocation process of the sprinkler solenoid valve addresses according to a specific embodiment of the present invention. DETAILED DESCRIPTION

[0036] The specific embodiments of the present invention are described below with reference to the accompanying drawings.

[0037] like Figure 1 As shown, the present invention discloses an automatic water sprinkling and cooling system for a conveyor, comprising a host computer, a control host, a temperature-sensing optical fiber, and N water sprinkling solenoid valves; the control host is respectively connected to the host computer and the temperature-sensing optical fiber signals, and the control host is connected to the N water sprinkling solenoid valve signals via a communication bus.

[0038] Among them, the temperature-sensing optical fiber is laid along the center line of the conveyor to monitor the temperature data along the conveyor; N sprinkler solenoid valves are arranged in sequence along the conveyor at preset intervals; each sprinkler solenoid valve is connected to two smoke sensors for collecting smoke data and transmitting it to the control host through the sprinkler solenoid valve; the control host communicates with the temperature-sensing optical fiber and the sprinkler solenoid valve to detect the temperature and smoke data along the conveyor, and when the temperature and smoke data exceed the preset values, it controls the corresponding sprinkler solenoid valve to sprinkle water for cooling.

[0039] In this system, temperature and smoke data along the conveyor are sensed through temperature-sensing optical fibers and smoke sensors to determine the fire heat source along the line; distributed optical fiber temperature measurement technology and CAN communication technology are used to accurately locate the fire heat source; the upper computer and control host analyze and judge the numerical value and growth trend of the smoke and temperature, and link the solenoid valve to achieve water sprinkling and cooling at the designated position of the conveyor.

[0040] For long-distance equipment like belt conveyors, using conventional sensors to collect temperature is not only costly but also ineffective, making continuous distributed measurement impossible. Distributed fiber optic temperature measurement uses a single temperature-sensing fiber to achieve long-distance, continuous online temperature monitoring. Fiber optics are inherently safe and immune to electromagnetic interference. This approach can meet real-time, continuous data collection requirements at a lower cost.

[0041] Specifically, the control host includes a distributed fiber optic temperature measurement module, a CAN communication module, and a control mainboard. The control mainboard connects to the distributed fiber optic temperature measurement module and the CAN communication module via an internal bus. The distributed fiber optic temperature measurement module is used to collect temperature data and locate the position along the conveyor. The control mainboard connects to the sprinkler solenoid valve signal via the CAN communication module to collect smoke data along the conveyor and control the sprinkler solenoid valve at designated locations. The control mainboard analyzes and determines the value and growth trend of smoke and temperature, and activates the sprinkler solenoid valve to spray water and cool designated locations on the conveyor.

[0042] As can be seen, the control board exchanges data with the distributed fiber-optic temperature measurement module and the CAN communication module via an internal bus. The system uses the distributed fiber-optic temperature measurement module to collect and locate temperatures along the conveyor line. CAN communication technology not only collects smoke data and locates smoke positions along the conveyor line, but also controls solenoid valves at designated locations. The control board analyzes and determines the smoke and temperature values ​​and growth trends, and activates the solenoid valves to spray water and cool designated locations on the conveyor.

[0043] As an example, the temperature-sensing optical fiber uses 62.5 / 125μm multimode optical fiber. The temperature-sensing optical fiber is laid along the center line of the conveyor to sense the temperature changes along the conveyor. The temperature-sensing optical fiber is connected to the control host through an optical fiber connector, and the control host is used to analyze the temperature along the conveyor and the corresponding position information.

[0044] A sprinkler solenoid valve and two smoke sensors are placed at regular intervals along the conveyor (generally every 50 meters). The sprinkler solenoid valve has two analog input channels, and the smoke sensor signals are fed into the nearest sprinkler solenoid valve. The solenoid valve is connected to the CAN bus, which transmits and receives data with the control host. (Uplink data includes the current sprinkler solenoid valve address, fully open status, fully closed status, and the values ​​of the two smoke signals; downlink data includes the solenoid valve on / off instructions.) This allows smoke data collection and sprinkler valve control along the conveyor line to be collected using a single communication line. When temperature and smoke data along the conveyor line exceed preset values, the system controls the sprinkler solenoid valves in the current zone to spray water for cooling.

[0045] In order to realize regional temperature monitoring, in this system, the temperature-sensing optical fiber is divided into N 50-meter-long temperature-sensing zones in sequence; the control host sets identification words for the 1st to Nth temperature-sensing zones respectively and assigns values ​​1 to N in sequence.

[0046] As an example, the host computer 1 is used to partition the temperature-sensitive optical fiber according to the actual mileage (distance) of the lane. For example, if the 0-50 meters of the temperature-sensitive optical fiber is within the 0-50 meter mileage range of the lane, the temperature-sensitive optical fiber is set as the first temperature-sensitive zone, and the host computer sends this information to the control host in the form of communication. The control host assigns the identification word of the 0-50 meter temperature-sensitive optical fiber to 1; if the 50-100 meters of the temperature-sensitive optical fiber is within the 50-100 mileage range of the lane, the temperature-sensitive optical fiber is set as the second temperature-sensitive zone, and the control host assigns the identification word of the 50-100 meter temperature-sensitive optical fiber to 2; if the 100-150 meters of the temperature-sensitive optical fiber is within the 100-150 mileage range of the lane, the temperature-sensitive optical fiber is set as the third temperature-sensitive zone, and the control host assigns the identification word of the 100-150 meter temperature-sensitive optical fiber to 3... Follow this process until the temperature-sensitive zones are divided.

[0047] Accordingly, this system sets the sprinkler solenoid valves as follows: N sprinkler solenoid valves are set in N temperature-sensing zones in turn, and the control host sets an identification word for each sprinkler solenoid valve according to the temperature-sensing zone to which each sprinkler solenoid valve belongs and assigns values ​​from 1 to N in turn.

[0048] As an example, the host computer divides the lanes according to the actual mileage (distance) of the sprinkler solenoid valves. For example, sprinkler solenoid valve No. 1 is within the mileage range of 0-50 meters in the lane and is set in the first temperature-sensing zone. The host computer sends this information to the control host in the form of communication. The control host assigns the identification word of sprinkler solenoid valve No. 1 to 1; sprinkler solenoid valve No. 2 is within the mileage range of 50-100 meters in the lane and is set in the second temperature-sensing zone. Similarly, the control host assigns the identification word of sprinkler solenoid valve No. 2 to 2; sprinkler solenoid valve No. 3 is within the mileage range of 100-150 meters in the lane and is set in the third temperature-sensing zone. The control host assigns the identification word of solenoid valve No. 3 to 3... Follow this process until all sprinkler solenoid valves are set.

[0049] After the above settings are completed, the host computer automatically associates the temperature-sensing optical fiber and the sprinkler solenoid valve based on the zone data and the identification codes of the temperature-sensing optical fiber and the sprinkler solenoid valve. If the temperature mode is selected, when the temperature of the temperature-sensing optical fiber in the temperature-sensing zone exceeds the set trigger value, the sprinkler solenoid valve with the same identification code will be activated, and the sprinkler solenoid valves in this temperature-sensing zone will be energized and activated. When all temperatures in the temperature-sensing zone fall below the set trigger value, the sprinkler solenoid valve will be shut off after a certain delay (the default delay time is 3 minutes). For example, in the first zone (0-50 meters range), when the temperature monitored by the distributed optical fiber temperature measurement system exceeds the trigger value, solenoid valve No. 1 will be activated. When the temperature in the first zone falls below the trigger value, the solenoid valve will be shut off after a certain delay (the default delay time is 3 minutes).

[0050] like Figure 2 As shown, the sprinkler solenoid valve of this system includes: a single-chip microcomputer, a front-end interface, a back-end interface, a pulse control circuit, a first pulse input detection circuit, a second pulse input detection circuit, a pulse generating circuit, a power supply circuit, a first analog quantity acquisition channel isolation circuit, a second analog quantity acquisition channel isolation circuit, a device type selection switch and a solenoid valve coil control circuit.

[0051] The single-chip microcomputer is respectively connected to the pulse control circuit, the first pulse input detection circuit, the second pulse input detection circuit, the pulse generating circuit, the power supply circuit, the first analog quantity acquisition channel isolation circuit, the second analog quantity acquisition channel isolation circuit, the device type selection switch and the solenoid valve coil control circuit; the front-end interface is respectively connected to the pulse control circuit, the first pulse input detection circuit and the communication bus, the back-end interface is respectively connected to the pulse control circuit, the second pulse input detection circuit and the communication bus, and the pulse sending circuit is respectively connected to the pulse control circuit and the back-end interface.

[0052] As can be seen from the above structure, the sprinkler solenoid valve has two analog input channels that can be hardwired to receive signals from two sets of smoke sensors located in front and behind the solenoid valve. The sprinkler solenoid valve also features CAN communication, which, in conjunction with the host computer, automatically assigns a CAN address to each smoke sensor. During system operation, the sprinkler solenoid valves are automatically sorted and assigned communication addresses based on their distance from the host computer, from closest to farthest.

[0053] The power supply circuit converts input power to the power required for normal operation of the microcontroller, various functional circuits, and the solenoid valve coil. The first and second analog acquisition channel isolation circuits isolate analog signals from the microcontroller, enhancing the system's anti-interference capabilities and ensuring safe and reliable operation. In this system, the first and second analog acquisition channel isolation circuits are used to detect two smoke signals. The device type selector switch determines whether the current device is the final device, or terminal device. The solenoid valve coil control circuit drives the solenoid valve coil to control the solenoid valve.

[0054] In this system, a single communication line is needed to collect smoke data and control solenoid valves along the route. During system operation, the sprinkler solenoid valves are automatically sorted and assigned communication addresses based on their distance from the host computer. Specifically, the host computer initiates a pre-set automatic sorting and assignment process for sprinkler solenoid valve addresses, automatically sorting and assigning communication addresses based on their distance from the host computer.

[0055] like Figure 3 As shown in the figure, the preset automatic sorting and allocation process of the sprinkler solenoid valve address includes the following steps:

[0056] S1: After the system is running, the control host sends a pulse signal with ID 1 to the communication bus.

[0057] S2: The pulse signal is received and locked by the sprinkler solenoid valve closest to the pulse signal source; the current sprinkler solenoid valve analyzes the ID value of the pulse signal through the pulse input detection circuit and defines its own address as the analyzed ID value.

[0058] S3: Determine whether the current sprinkler solenoid valve is a terminal device. If the current device is a terminal device, the address allocation is completed and the process exits directly. If not, proceed to the next step.

[0059] S4: Close the pulse control circuit of the current sprinkler solenoid valve.

[0060] S5: The current sprinkler solenoid valve adds 1 to its ID and sends the new ID value to the pulse generating circuit.

[0061] S6: The pulse sending circuit generates a corresponding pulse signal according to the current ID value and sends it to the communication bus, and executes step S2.

[0062] It can be seen that the automatic water sprinkling and cooling system for conveyors provided by the present invention effectively solves the following problems:

[0063] 1. Targeting discrete measurement points along the belt conveyor, the system monitors the temperature along the conveyor. This system utilizes distributed temperature measurement devices to continuously monitor the temperature along the conveyor, enabling continuous, real-time monitoring of the temperature along the entire conveyor.

[0064] 2. The existing system topology is complex, requiring separate communication lines for the solenoid valve and smoke sensor. This system uses an integrated solenoid valve that integrates analog data acquisition and communication, simplifying the network topology and facilitating installation and use.

[0065] 3. Existing solenoid valve communication addresses require individual software configuration (this involves modifying the address data within the program and downloading it to the microcontroller chip inside the solenoid valve). Each solenoid valve has a different address, making them incompatible. This makes direct replacement impossible during repair or maintenance, creating significant inconvenience. The solenoid valves designed in this system feature automatic address assignment, eliminating the need for manual or individual communication address configuration. During operation, the control host automatically detects the addition or removal of sprinkler solenoid valves and reassigns communication addresses based on their proximity to the control host, from nearest to furthest.

[0066] 4. Realize regional monitoring and directional watering and cooling. The host computer divides the watering solenoid valves and optical fiber temperature measurement into zones according to the actual physical location. Smoke and temperature only trigger and control the watering solenoid valves in this zone.

[0067] The present invention will be further described with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are intended only to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the contents of the present invention, those skilled in the art may make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the present application.

Claims

1. A conveyor automatic water sprinkling cooling system, characterized in that: include: Host computer, control host, temperature-sensing optical fiber, N sprinkler solenoid valves and smoke sensor; the control host is connected to the host computer and temperature-sensing optical fiber signals respectively, and the control host is connected to the N sprinkler solenoid valve signals through the communication bus; The temperature-sensing optical fiber is laid along the center line of the conveyor to monitor the temperature data along the conveyor; N sprinkler solenoid valves are arranged in sequence along the conveyor at preset intervals; Each sprinkler solenoid valve is connected to two smoke sensors for collecting smoke data and transmitting it to the control host through the sprinkler solenoid valve; The control host communicates with the temperature-sensing optical fiber and the sprinkler solenoid valve to detect the temperature and smoke data along the conveyor. When the temperature and smoke data exceed the preset values, the corresponding sprinkler solenoid valve is controlled to sprinkle water for cooling. The control host includes: a distributed optical fiber temperature measurement module, a CAN communication module and a control mainboard; The control mainboard is connected to the distributed optical fiber temperature measurement module and the CAN communication module through the internal bus; Distributed fiber optic temperature measurement module, used for temperature collection and location along the conveyor; The control mainboard is connected to the temperature-sensing optical fiber and the sprinkler solenoid valve signal through the CAN communication module to collect smoke and temperature data along the conveyor and control the sprinkler solenoid valve at the designated location; The control mainboard is used to analyze and judge the numerical value and growth trend of smoke and temperature and to link the sprinkler solenoid valve to sprinkle water and cool down the designated position of the conveyor; The sprinkler solenoid valve includes: a single chip microcomputer, a front-end interface, a back-end interface, a pulse control circuit, a first pulse input detection circuit, a second pulse input detection circuit, a pulse generating circuit, a power supply circuit, a first analog quantity acquisition channel isolation circuit, a second analog quantity acquisition channel isolation circuit, a device type selection switch and a solenoid valve coil control circuit; The single-chip microcomputer is respectively connected to the pulse control circuit, the first pulse input detection circuit, the second pulse input detection circuit, the pulse generating circuit, the power supply circuit, the first analog quantity acquisition channel isolation circuit, the second analog quantity acquisition channel isolation circuit, the device type selection switch and the solenoid valve coil control circuit; the front-end interface is respectively connected to the pulse control circuit, the first pulse input detection circuit and the communication bus, the back-end interface is respectively connected to the pulse control circuit, the second pulse input detection circuit and the communication bus, and the pulse sending circuit is respectively connected to the pulse control circuit and the back-end interface; The power supply circuit is used to convert the input power into the power required for the normal operation of the single chip microcomputer, various functional circuits and solenoid valve coil; The first analog quantity acquisition channel isolation circuit and the second analog quantity acquisition channel isolation circuit are used to detect two-way smoke signals and perform signal isolation between the analog quantity signals and the single chip microcomputer; The device type selection switch is used to determine whether the current sprinkler solenoid valve is the terminal device. The solenoid valve coil control circuit is used to drive the solenoid valve coil to control the solenoid valve; The control host is further configured to automatically sort and allocate communication addresses from near to far according to the distance between the sprinkler solenoid valve and the host through a preset sprinkler solenoid valve address automatic sorting and allocation process; The preset automatic sorting and allocation process of the sprinkler solenoid valve addresses specifically includes the following steps: S1: After the system is running, the control host sends a pulse signal with ID 1 to the communication bus; S2: The pulse signal is received and locked by the sprinkler solenoid valve closest to the pulse signal source; the current sprinkler solenoid valve analyzes the ID value of the pulse signal through the pulse input detection circuit and defines its own address as the analyzed ID value; S3: Determine whether the current sprinkler solenoid valve is a terminal device. If the current device is a terminal device, the address allocation is completed and the program exits directly. If not, proceed to the next step. S4: Close the pulse control circuit of the current sprinkler solenoid valve; S5: The current sprinkler solenoid valve adds 1 to its ID and sends the new ID value to the pulse generating circuit; S6: The pulse sending circuit generates a corresponding pulse signal according to the current ID value and sends it to the communication bus, and executes step S2; the temperature-sensitive optical fiber is divided into N 50-meter-long temperature-sensitive zones in turn; the control host sets identification words for the 1st temperature-sensitive zone to the Nth temperature-sensitive zone and assigns them from 1 to N in turn; the N sprinkler solenoid valves are set in the N temperature-sensitive zones in turn, and the control host sets an identification word for each sprinkler solenoid valve according to the temperature-sensitive zone to which each sprinkler solenoid valve belongs and assigns them from 1 to N in turn.

2. The automatic water sprinkling and cooling system for conveyors according to claim 1 is characterized in that: The temperature-sensitive optical fiber adopts 62.5 / 125 μm multimode optical fiber.

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