Light control system, method and equipment

Abstract

The invention provides a light control system, method and equipment, and relates to the technical field of mining explosion-proof electrical equipment. The light control system comprises a power supply conversion device, a power supply distribution device and an intrinsic safety electrical device which are connected in sequence, the intrinsic safety electrical device comprises a plurality of intrinsic safety electrical units, and each intrinsic safety electrical unit is connected with the power supply distribution device; the power supply conversion device is used for converting non-intrinsic safety direct current into intrinsic safety direct current when receiving the non-intrinsic safety direct current and transmitting the intrinsic safety direct current to the power supply distribution device; the power supply distribution device is used for determining the intrinsically safe electrical subunits needing power supply according to the working mode of the light control system and transmitting the intrinsically safe direct current to the corresponding intrinsically safe electrical subunits; the intrinsic safety electrical unit is used for carrying out light control when receiving the intrinsic safety direct current. According to the invention, the flexibility of the system is improved, and the power distribution is more accurate.

Description

Technical Field

[0001] The present invention relates to the technical field of explosion-proof electrical equipment for mines, and in particular to a lighting control system, method and equipment. Background Art

[0002] At present, most mining equipment such as transport locomotives or lifeboats used in mines usually require the lighting control host to provide non-intrinsically safe currents to ensure the normal operation of some non-intrinsically safe electrical appliances such as lighting, signal switches and push button switches. However, many intrinsically safe electrical appliances are also installed in mining equipment, and intrinsically safe electrical appliances usually require intrinsically safe currents to work.

[0003] In the related art, due to the limited size and weight of the lighting control host, it is unable to provide high power for the intrinsically safe electrical appliances. Therefore, explosion-proof electrical appliances are usually used to replace the intrinsically safe electrical appliances. However, due to the defects of large size, heavy weight and low efficiency of explosion-proof electrical appliances, it causes great inconvenience to the production and installation of mining equipment. Summary of the invention

[0004] The problem solved by the present invention is how to improve the power output of a lighting control host under the premise of ensuring that the size and weight of the lighting control host remain unchanged.

[0005] To solve the above problems, the present invention provides a lighting control system, method and device.

[0006] In a first aspect, the present invention provides a lighting control system, the lighting control system comprising a power conversion device, a power distribution device and an intrinsically safe electrical device connected in sequence, wherein the intrinsically safe electrical device comprises a plurality of intrinsically safe sub-electrical units, each of the intrinsically safe sub-electrical units being connected to the power distribution device;

[0007] The power conversion device is used for converting the non-intrinsically safe direct current into intrinsically safe direct current when receiving the non-intrinsically safe direct current, and transmitting the intrinsically safe direct current to the power distribution device;

[0008] The power supply distribution device is used to determine the intrinsically safe electrical sub-unit that needs to be powered according to the working mode of the lighting control system, and transmit the intrinsically safe direct current to the corresponding intrinsically safe electrical sub-unit;

[0009] The intrinsically safe sub-electrical unit is used to control lighting when receiving the intrinsically safe direct current.

[0010] Optionally, the power conversion device includes a plurality of independently arranged intrinsically safe power supply units, each of which includes a DC / DC circuit unit;

[0011] The intrinsically safe power supply unit is used to input the non-intrinsically safe direct current into the DC / DC circuit unit when receiving the non-intrinsically safe direct current;

[0012] The DC / DC circuit unit is used to convert the non-intrinsically safe direct current into pulsating direct current, and filter the pulsating direct current to obtain the intrinsically safe direct current.

[0013] Optionally, each of the intrinsically safe power supply units further comprises at least one protection circuit unit, and the protection circuit unit and the DC / DC circuit unit in each of the intrinsically safe power supply units are connected to each other;

[0014] The protection circuit unit is used to monitor the power supply temperature of the intrinsically safe power supply unit; and adjust the intrinsically safe direct current delivered by the DC / DC circuit unit to the power supply distribution device according to the power supply temperature.

[0015] Optionally, the protection circuit unit includes a temperature monitoring module and a voltage limiting module connected to each other;

[0016] The temperature module is used to monitor the power supply temperature of the intrinsically safe power supply unit;

[0017] The voltage limiting module is used to reduce the intrinsically safe direct current delivered by the DC / DC circuit unit to the power distribution device when the power supply temperature exceeds a first preset threshold value;

[0018] When the power supply temperature exceeds a second preset threshold, stopping the transmission of the intrinsically safe direct current;

[0019] The first preset threshold is smaller than the second preset threshold.

[0020] Optionally, the voltage limiting module is further used for:

[0021] When the power supply temperature exceeds the first preset threshold, obtaining a temperature difference between the power supply temperature and the first preset threshold;

[0022] According to the temperature difference, determining the expected value of the intrinsically safe direct current by a preset linear rule;

[0023] The intrinsically safe direct current is reduced to the expected value through the switch tube of the voltage limiting module.

[0024] Optionally, the power supply distribution device includes a working mode determination unit, and the intrinsically safe electrical subunit includes a plurality of independently arranged intrinsically safe electrical devices;

[0025] The working mode determination unit is used to obtain the control signal of the electrical unit;

[0026] When the control signal is a line signal, determining a switch that sends the line signal according to the line signal, and determining the intrinsically safe electrical equipment according to the switch;

[0027] When the control signal is a CAN signal, the intrinsically safe electrical sub-unit to be controlled is determined according to the message control bit of the CAN signal.

[0028] Optionally, the power distribution device further comprises a delivery unit, and the delivery unit is connected to the working mode determination unit;

[0029] The transmission unit is used to plan the transmission line of the intrinsically safe direct current output by the power supply distribution device according to the intrinsically safe electrical equipment that needs to be controlled; and to send the intrinsically safe direct current to the corresponding intrinsically safe electrical equipment in the intrinsically safe electrical sub-unit along the transmission line.

[0030] Optionally, the lighting control system further comprises a non-intrinsically safe electrical device and a non-intrinsically safe power supply unit, wherein the non-intrinsically safe power supply unit is connected to the non-intrinsically safe electrical device and the power conversion device respectively;

[0031] The non-intrinsically safe power supply unit is used to output the non-intrinsically safe direct current to the non-intrinsically safe electrical device and the power conversion device;

[0032] The non-intrinsically safe electrical device is used to control lighting when receiving the non-intrinsically safe direct current.

[0033] In a second aspect, the present invention provides a lighting control method, which is applied to the lighting control system, wherein the lighting control system comprises a power conversion device, a power distribution device and an intrinsically safe electrical device connected in sequence, wherein the intrinsically safe electrical device comprises a plurality of intrinsically safe sub-electrical units, each of which is connected to the power distribution device;

[0034] The lighting control method comprises:

[0035] When receiving non-intrinsically safe direct current, the power conversion device converts the non-intrinsically safe direct current into intrinsically safe direct current, and transmits the intrinsically safe direct current to the power distribution device;

[0036] By means of the power distribution device, the intrinsically safe electrical sub-unit that needs to be powered is determined according to the working mode of the lighting control system, and the intrinsically safe direct current is transmitted to the corresponding intrinsically safe electrical sub-unit;

[0037] When the intrinsically safe direct current is received by the intrinsically safe sub-electrical unit, lighting control is performed.

[0038] In a third aspect, the present invention provides an electronic device, including a memory and a processor;

[0039] The memory is used to store computer programs;

[0040] The processor is used to implement the above-mentioned lighting control method when executing the computer program.

[0041] The lighting control system, method and equipment of the present invention, through a power conversion device, a power distribution device and an intrinsically safe electrical device, achieves a significant improvement in the power output capacity while maintaining the size and weight of the lighting control host unchanged, which is compatible with the small size of the lighting control host and solves the space occupation caused by the large size of the intrinsically safe power supply. Specifically, firstly, the non-intrinsically safe direct current is efficiently converted into intrinsically safe direct current through the power conversion device, so that the intrinsically safe sub-electrical units installed in the mining equipment can work with the converted intrinsically safe direct current; secondly, the power distribution device distributes power according to the working mode of the lighting control system to ensure that only the intrinsically safe sub-electrical units that need to work are powered, such as CAN communication or line connection, so as to use the communication connection to realize the switching of the on / off control mode of the lighting control; finally, multiple intrinsically safe sub-electrical units in the intrinsically safe electrical device can independently receive intrinsically safe direct current and perform lighting control. This modular design not only improves the flexibility of the system, but also makes the power distribution more precise, so that without increasing the size and weight of the main machine, the mining equipment can still use intrinsically safe electrical appliances without being equipped with an intrinsically safe power supply, making full use of the characteristics of small size, light weight, low power consumption and low cost of intrinsically safe electrical appliances, improving the safety level of many mining equipment such as transport locomotives, standardizing the safety signal equipment that the equipment should have but cannot be installed, and improving the performance and safety of the lighting control system. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 is a structural block diagram of a lighting control system according to an embodiment of the present invention;

[0043] Figure 2 This is one of the overall appearance structure diagrams of the lighting control host according to an embodiment of the present invention;

[0044] Figure 3 This is the second overall appearance structure diagram of the lighting control host according to an embodiment of the present invention;

[0045] Figure 4 An overall power distribution diagram of a lighting control system according to an embodiment of the present invention;

[0046] Figure 5 It is an overall block diagram of a series-connected intrinsically safe power supply according to an embodiment of the present invention;

[0047] Figure 6 It is a block diagram of the composition principle of the electrical control system of an embodiment of the present invention;

[0048] Figure 7 is a flow chart of a lighting control method according to an embodiment of the present invention;

[0049] Figure 8 The figure is a schematic diagram of the structure of an electronic device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0050] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be interpreted as being limited to the embodiments described herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are only for exemplary purposes and are not intended to limit the scope of protection of the present invention.

[0051] It should be understood that the various steps described in the method embodiments of the present invention may be performed in different orders and / or in parallel. In addition, the method embodiments may include additional steps and / or omit the steps shown. The scope of the present invention is not limited in this respect.

[0052] The term "including" and its variations used in this document are open inclusions, that is, "including but not limited to"; the term "based on" means "based at least in part on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional embodiments". The relevant definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc. mentioned in the present invention are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0053] It should be noted that the modifications of "one" and "plurality" mentioned in the present invention are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0054] The names of the messages or information exchanged between multiple devices in the embodiments of the present invention are only used for illustrative purposes, and are not used to limit the scope of these messages or information.

[0055] Combination Figure 1As shown, an embodiment of the present invention provides a lighting control system, which includes a power conversion device, a power distribution device and an intrinsically safe electrical device connected in sequence, wherein the intrinsically safe electrical device includes a plurality of intrinsically safe sub-electrical units, and each of the intrinsically safe sub-electrical units is connected to the power distribution device.

[0056] In a preferred embodiment of the present invention, the power conversion device can be a host power board, and the power distribution device can be a host control board. Figure 2 and Figure 3 As shown in the figure, the structure of the lighting control system is an integral type. The host power board and the host control board are respectively cast and installed in a shell. The shell has a power supply interface, a lamp interface, a switch control interface, and a CAN communication interface reserved for the outside. Among them, the lighting control host is the core part of the mining lighting control system, which is responsible for controlling and monitoring the lighting system of the mining vehicle. It is connected to the main control system of the vehicle through the CAN communication interface to realize the switching of the driving mode with / without, and feedback the real-time status information of the lighting system. The host power board is the power supply part of the system, which contains four intrinsically safe power supplies. Each power supply is designed with multiple voltage limiting and current limiting protection circuits to ensure the safety and stability of the system; the power board converts the non-intrinsically safe DC power supply into an intrinsically safe DC power supply through a DC / DC module to power and control all the lights of the vehicle; the host control board is the control center of the system, which is responsible for receiving power and controlling the various components connected to it. There are multiple interfaces on the control board, including the power supply interface, the lamp interface, the switch control interface, the CAN communication interface, etc. The control board adopts a modular design to improve the cost and reliability of the vehicle.

[0057] Specifically, the power conversion device, the power distribution device and the intrinsically safe electrical device are connected in sequence. In a preferred embodiment of the present invention, Figure 4 As shown, there may be three intrinsically safe sub-electrical units, each of which may include double flash lights, reversing lights, brake lights, turn signals, high and low beam lights, cargo box lights and driving lights.

[0058] In a preferred embodiment of the present invention, Figure 4The figure shows the power distribution diagram of the mining lighting control system, which is designed to provide stable, safe and efficient lighting control for underground transport locomotives, lifeboats and other equipment in coal mines. Among them, the host power board is the core power supply part of the system, which includes four intrinsically safe power supplies. Each power supply is designed with multiple voltage and current limiting protection circuits to ensure the safety and stability of the system. The first intrinsically safe power supply, the second intrinsically safe power supply, the third intrinsically safe power supply and the fourth intrinsically safe power supply are responsible for providing power for different lights and equipment, and each power supply includes at least two temperature monitoring channels to achieve overheating protection. When the temperature of the power module exceeds the set limit value, the power output will be reduced or the connection with the load will be disconnected to prevent overheating damage. The host control board is the control center of the system, responsible for receiving power and controlling the various components connected to it. The control board adopts a modular design to improve the cost and reliability of the whole vehicle. There are multiple interfaces on the control board, including power supply interface, lamp interface, switch control interface, CAN communication interface, etc. The warning light is used to provide visual warnings or indicate system status. The 20-way switch device is a component that can control 20 independent switches, and is used to control various devices or system states. The 6-way backup lighting interface is used to connect backup lighting equipment to ensure that when there is a problem with the main lighting system, the backup lighting can take over in time. The integrated left and right taillights are used to connect to the vehicle's taillights to provide necessary signal indications. The cargo box lighting is used to connect to the lighting equipment in the cargo box to ensure visibility inside the cargo box. The integrated left and right headlights are used to connect to the vehicle's headlights to provide the main lighting function. Through the CAN communication interface, the system can receive control commands from the vehicle's main control, and feedback real-time status information of the lighting system to achieve switching between driven / unmanned driving modes. Figure 4 The figure shows how power is distributed to different lights and devices to ensure that each component can get the power it needs; and the entire system design takes into account the special requirements of the underground coal mine environment, such as explosion-proof and intrinsically safe power supplies, to improve the safety level of transport locomotives. Through CAN communication, the system can achieve more advanced control and monitoring functions to ensure the stability and convenience of lighting control for transport locomotives running underground in coal mines.

[0059] The power conversion device is used to convert the non-intrinsically safe direct current into intrinsically safe direct current when receiving the non-intrinsically safe direct current, and transmit the intrinsically safe direct current to the power distribution device.

[0060] Specifically, the power conversion device converts non-intrinsically safe DC power into intrinsically safe DC power. This step is the key to ensuring the safety of the entire lighting control system. Specifically, through the power conversion device, the system can effectively reduce this risk and adjust the power supply voltage to a voltage level suitable for the operation of intrinsically safe electrical devices. This conversion process not only involves voltage adjustment, but also includes the management of power supply stability and purity to ensure that the output intrinsically safe DC power is both safe and stable, meeting the needs of subsequent power supply distribution devices, and providing a stable ≤24V intrinsically safe power supply for various underground equipment such as lifeboats.

[0061] The power supply distribution device is used to determine the intrinsically safe electrical sub-unit that needs to be powered according to the working mode of the lighting control system, and transmit the intrinsically safe direct current to the corresponding intrinsically safe electrical sub-unit.

[0062] Specifically, the power distribution device is responsible for determining which intrinsically safe sub-electrical units need to be powered according to the working mode of the lighting control system, and then accurately delivering intrinsically safe direct current to these units. The intelligent power supply management of the present invention not only improves the efficiency of energy use, but also enhances the flexibility and response speed of the system. In this way, the power distribution device can ensure that only necessary lights are activated at any given moment, thereby reducing unnecessary energy consumption, extending the life of the system, and improving overall energy efficiency. In addition, this on-demand power supply strategy also helps to reduce the heat loss of the system, further improving the stability and reliability of the system.

[0063] In the preferred embodiment of the present invention, the operation status of the vehicle lighting system (including ground disconnection protection, reverse polarity protection, overvoltage protection, short circuit protection, current limit, overtemperature, etc., these alarms are transmitted to the vehicle controller through CAN communication) and various parameters in the working process (including working current, working voltage, etc.) can be read through the CAN communication interface, and the functional operation of the vehicle lamp can be realized through the CAN communication interface and the switch quantity control interface. The lighting control system can realize CAN communication and line communication to realize the switching of the driving mode with / without, and then use the communication connection with the lighting control system to realize the switching of the driving mode with / without on the lighting control.

[0064] The intrinsically safe sub-electrical unit is used to control lighting when receiving the intrinsically safe direct current.

[0065] Specifically, the intrinsically safe sub-electrical unit is the executive part of the lighting control system. The intrinsically safe sub-electrical unit receives intrinsically safe direct current from the power distribution device and performs lighting control when receiving power. The design of each intrinsically safe sub-electrical unit follows the intrinsically safe principle, which not only improves the safety of the system, but also allows the system to deploy multiple sub-units in a compact space to achieve complex lighting control functions. The efficient conversion and use of electricity by the intrinsically safe sub-electrical unit enables the entire lighting control system to achieve high power output while maintaining a small size and weight, thereby meeting the lighting needs of different vehicles and environments.

[0066] It is worth mentioning that in the mining lighting control system of the present invention, three core devices, namely, a power conversion device, a power distribution device and an intrinsically safe electrical device, are used. The unique design and integration of these devices enable the system to provide higher safety, efficiency and functionality while maintaining the same size and weight. The system integrates power conversion, power distribution and intrinsically safe electrical devices into a compact system, reducing additional connections and components, thereby reducing the overall size and weight, and has a high degree of integration; and the system adopts a modular design, so that each component can be independently developed and optimized, while maintaining the compactness of the overall system, so that the system can not only increase the external size, but also increase the function and efficiency of the internal components. At the same time, the power conversion device converts the non-intrinsically safe DC power supply into an intrinsically safe DC power supply through a DC / DC module. This process not only involves voltage adjustment, but also includes the management of power supply stability and purity. This optimized power management strategy not only reduces energy loss and improves efficiency, but also maintains the size and weight of the system; the design of the intrinsically safe electrical device of the present invention follows the intrinsic safety principle, allowing multiple subunits to be deployed in a compact space to achieve complex lighting control functions; this unique design method not only improves the safety of the system, but also allows the system to achieve high power output at a smaller size and weight. In addition, the power distribution device can determine which intrinsically safe sub-electrical units need to be powered according to the working mode of the lighting control system, and then accurately deliver intrinsically safe direct current to these units; this on-demand power supply strategy also reduces unnecessary energy consumption, further improves overall energy efficiency, and helps reduce heat loss in the system, further improving the stability and reliability of the system. In addition, the host power board and host control board of the present application use glue sealing technology, which can reduce the size and weight of the outer shell while protecting the internal components. In summary, the mining lighting control system of the present application can maintain or even reduce size and weight while integrating more functions and improving safety.

[0067] The lighting control system of the present invention, through a power conversion device, a power distribution device and an intrinsically safe electrical device, achieves a significant improvement in the power output capacity while maintaining the size and weight of the lighting control host unchanged, which is compatible with the small size of the lighting control host and solves the space occupation caused by the large size of the intrinsically safe power supply. Specifically, firstly, the non-intrinsically safe direct current is efficiently converted into intrinsically safe direct current through the power conversion device, so that the intrinsically safe sub-electrical units installed in the mining equipment can work with the converted intrinsically safe direct current; secondly, the power distribution device distributes power according to the working mode of the lighting control system to ensure that only the intrinsically safe sub-electrical units that need to work are powered, such as CAN communication or line connection, so as to use the communication connection to realize the switching of the on / off control mode of the lighting control; finally, multiple intrinsically safe sub-electrical units in the intrinsically safe electrical device can independently receive intrinsically safe direct current and perform lighting control. This modular design not only improves the flexibility of the system, but also makes the power distribution more precise, so that without increasing the size and weight of the main machine, the mining equipment can still use intrinsically safe electrical appliances without being equipped with an intrinsically safe power supply, making full use of the characteristics of small size, light weight, low power consumption and low cost of intrinsically safe electrical appliances, improving the safety level of many mining equipment such as transport locomotives, standardizing the safety signal equipment that the equipment should have but cannot be installed, and improving the performance and safety of the lighting control system.

[0068] Optionally, the power conversion device includes a plurality of independently arranged intrinsically safe power supply units, each of which includes a DC / DC circuit unit;

[0069] The intrinsically safe power supply unit is used to input the non-intrinsically safe direct current into the DC / DC circuit unit when receiving the non-intrinsically safe direct current;

[0070] The DC / DC circuit unit is used to convert the non-intrinsically safe direct current into pulsating direct current, and filter the pulsating direct current to obtain the intrinsically safe direct current.

[0071] Specifically, the power conversion device adopts a modular intrinsically safe power supply unit, each unit independently contains a DC / DC circuit unit. This design improves the reliability and flexibility of the system; when non-intrinsically safe direct current is input to each intrinsically safe power supply unit, the DC / DC circuit unit first converts the input non-intrinsically safe direct current into pulsating direct current through the rapid switching action of the switching element, and then the DC / DC circuit unit filters the pulsating direct current to reduce ripple and obtain smooth intrinsically safe direct current, ensuring the stability and safety of the power supply and allowing each intrinsically safe power supply unit to work independently. Even if a unit fails, it will not affect the normal operation of other units, thereby ensuring the continuity and reliability of the entire lighting control system.

[0072] In a preferred embodiment of the present invention, a four-way intrinsically safe power supply unit can be used, and the structure of the intrinsically safe power supply is mainly composed of a non-intrinsically safe DC input, a DC / DC module, and multiple voltage-limiting and current-limiting protection circuits. The intrinsically safe power supply unit is independently isolated and controlled to realize the control and monitoring of the mining vehicle lighting system.

[0073] In the optional embodiment, the non-intrinsically safe DC power is efficiently and safely converted into intrinsically safe DC power, which significantly improves the safety and stability of the lighting control system; the modular intrinsically safe power supply unit design makes system maintenance more convenient, and the failure of a single unit will not cause the paralysis of the entire system, which enhances the fault tolerance of the system. At the same time, this design also helps to reduce the power consumption of the entire system, because each intrinsically safe power supply unit can independently adjust the output according to actual needs, avoiding unnecessary energy waste.

[0074] Optionally, each of the intrinsically safe power supply units further comprises at least one protection circuit unit, and the protection circuit unit and the DC / DC circuit unit in each of the intrinsically safe power supply units are connected to each other;

[0075] The protection circuit unit is used to monitor the power supply temperature of the intrinsically safe power supply unit; and adjust the intrinsically safe direct current delivered by the DC / DC circuit unit to the power supply distribution device according to the power supply temperature.

[0076] Specifically, each intrinsically safe power supply unit not only includes a DC / DC circuit unit, but also integrates a protection circuit unit. The two units are interconnected to jointly ensure the safe and stable operation of the power supply unit; the main function of the protection circuit unit is to monitor the power supply temperature of the intrinsically safe power supply unit.

[0077] In a preferred embodiment of the present invention, at least two temperature monitoring channels can be set inside each intrinsically safe power module of the lighting control host. By monitoring the temperature of the power supply unit in real time, the protection circuit unit can respond to overheating in a timely manner to prevent equipment damage or safety accidents caused by excessive temperature. When an abnormal power supply temperature is detected, the protection circuit unit will dynamically adjust the intrinsically safe direct current delivered to the power distribution device according to the change in the power supply temperature, such as reducing the current output or temporarily cutting off the power supply, so as to protect the entire system from damage and ensure that the power supply unit operates within a safe temperature range.

[0078] Combination Figure 5As shown, in a preferred embodiment of the present invention, the protection circuit unit may include one protection circuit and two protection circuits, and the one protection circuit and the two protection circuits are connected in series. The protection circuit unit in series can exit operation when a single module fails, and can resume operation after the failure is eliminated, so as not to affect the function of the whole machine. The topology design of the voltage and current limiting protection circuit is in series form. The overall block diagram of the intrinsically safe power supply in series is as follows: Figure 5 The structure of the intrinsically safe power supply mainly consists of non-intrinsically safe DC input, DC / DC module and multiple voltage-limiting and current-limiting protection circuits, and finally outputs intrinsically safe DC. The core of the design of the intrinsically safe power supply is the multiple voltage-limiting and current-limiting protection circuits.

[0079] In an optional embodiment, by setting up a protection circuit unit and the real-time monitoring and dynamic adjustment functions of the protection circuit unit, the system can operate stably under various environmental conditions, reducing the risk of failures and accidents caused by abnormal power supply temperature, and significantly improving the safety and reliability of the lighting control system.

[0080] Optionally, the protection circuit unit includes a temperature monitoring module and a voltage limiting module connected to each other;

[0081] The temperature module is used to monitor the power supply temperature of the intrinsically safe power supply unit;

[0082] The voltage limiting module is used to reduce the intrinsically safe direct current delivered by the DC / DC circuit unit to the power distribution device when the power supply temperature exceeds a first preset threshold value;

[0083] When the power supply temperature exceeds a second preset threshold, stopping the transmission of the intrinsically safe direct current;

[0084] The first preset threshold is smaller than the second preset threshold.

[0085] Specifically, the protection circuit unit is composed of a temperature monitoring module and a voltage limiting module. The two modules are interconnected and work together to ensure the safe operation of the power supply unit under different temperature conditions. The temperature monitoring module is responsible for real-time monitoring of the power supply temperature of the intrinsically safe power supply unit, and the voltage limiting module takes action based on the monitored temperature data. When the power supply temperature exceeds the first preset threshold, the voltage limiting module will reduce the intrinsically safe direct current delivered to the power distribution device to reduce the power output. If the power supply temperature continues to rise and exceeds the second preset threshold, the voltage limiting module will stop delivering intrinsically safe direct current. This design ensures that when the power supply temperature is abnormal, the system can respond in time to avoid equipment damage or safety accidents caused by overheating. The first preset threshold is less than the second preset threshold, providing two levels of protection for the system.

[0086] In an optional embodiment, the temperature monitoring and voltage limiting modules work together to provide dual protection for the power supply unit, ensuring that timely measures can be taken when the power supply temperature is abnormal to avoid equipment damage or safety accidents caused by overheating.

[0087] Optionally, the voltage limiting module is further used for:

[0088] When the power supply temperature exceeds the first preset threshold, obtaining a temperature difference between the power supply temperature and the first preset threshold;

[0089] According to the temperature difference, determining the expected value of the intrinsically safe direct current by a preset linear rule;

[0090] The intrinsically safe direct current is reduced to the expected value through the switch tube of the voltage limiting module.

[0091] Specifically, when the power supply temperature exceeds the first preset threshold, the voltage limiting module will not only reduce the intrinsically safe direct current delivered to the power distribution device, but also adjust the power supply output through a refined temperature response mechanism. Specifically, the voltage limiting module will obtain the temperature difference between the power supply temperature and the first preset threshold, and determine the expected value of the intrinsically safe direct current based on this difference through a preset linear rule; since the topology of the voltage limiting module is designed in series, it can dynamically adjust the output according to temperature changes to maintain the safety and stability of the system; then, the voltage limiting module reduces the intrinsically safe direct current to the calculated expected value by controlling its switch tube. In this way, the voltage limiting module can accurately control the power supply output to adapt to different temperature conditions and ensure that the intrinsically safe power supply unit operates within a safe temperature range.

[0092] In an optional embodiment, by dynamically adjusting the power supply output in response to temperature changes, the risk of system failure due to excessive temperature is reduced, the reliability and safety of the system are improved, and the intrinsically safe power supply unit can maintain stable and safe output under different temperature conditions.

[0093] Optionally, the power supply distribution device includes a working mode determination unit, and the intrinsically safe electrical subunit includes a plurality of independently arranged intrinsically safe electrical devices;

[0094] The working mode determination unit is used to obtain the control signal of the electrical unit;

[0095] When the control signal is a line signal, determining a switch that sends the line signal according to the line signal, and determining the intrinsically safe electrical equipment according to the switch;

[0096] When the control signal is a CAN signal, the intrinsically safe electrical sub-unit to be controlled is determined according to the message control bit of the CAN signal.

[0097] Specifically, the working mode judgment unit is responsible for obtaining the control signals of the electrical units, which can be line signals or CAN signals (CAN signals, i.e., controller area network (Controller Area Network, abbreviated as CAN signals, are a multi-node communication protocol widely used in the industrial field). When the control signal is a line signal, the working mode judgment unit will determine the switch that sends the signal according to the line signal, and determine the intrinsically safe electrical equipment that needs to be powered accordingly. When the control signal is a CAN signal, the working mode judgment unit will determine the intrinsically safe electrical sub-unit that needs to be controlled according to the message control bit of the CAN signal. Therefore, the system can be used as a stand-alone machine or can be connected to the vehicle main control through CAN communication to receive control instructions from the main control and feedback real-time status information of the lighting system; the power supply distribution device can flexibly respond to different control signals, accurately manage and distribute power to each independent intrinsically safe electrical equipment, and ensure the efficient and accurate operation of the lighting control system.

[0098] In a preferred embodiment of the present invention, the power board and control board of the lighting control host are respectively encapsulated and installed in a shell, and the shell is reserved for power supply interface, lamp interface, switch control interface, and CAN communication interface. Figure 6As shown, the source of the control command is determined according to the line signal and the CAN signal, and then the corresponding intrinsically safe electrical is controlled through the lighting control system. Among them, the lighting control host is the core control unit of the system, which is responsible for receiving various input signals and controlling the corresponding lighting output. The input signal specifically includes: the user inputs the command through the button switch, and these switches are used to control specific lighting functions, such as double flash lights, reversing lights, etc. The handle switch is used to control the driving state of the vehicle, such as forward, backward, etc., and these states affect the automatic control of the lights. The proximity switch 1 is installed at a key position of the vehicle to detect the proximity state of the vehicle, such as whether the vehicle is approaching a certain area or obstacle. The buckle switch 1 is used to detect whether certain parts of the vehicle are correctly installed or locked, such as doors, cargo box covers, etc. Output control specifically includes: double flash lights: used to flash in emergency situations or when attention is needed; reversing lights: used to light up when the vehicle is reversing to alert pedestrians or vehicles behind; brake lights: used to light up when the vehicle brakes to alert vehicles behind; turn lights: used to flash when the vehicle turns to indicate the direction of travel of the vehicle; high and low beam lights: used to control the high and low beam switching of the vehicle headlights; cargo box lights: used to illuminate the interior or surrounding areas of the cargo box. Driving lights: used to provide basic lighting when the vehicle is driving. Vehicle controller: The lighting control host is connected to the vehicle controller through the CAN communication line to achieve more advanced vehicle control and status monitoring; the vehicle controller can send instructions to the lighting control host and receive status information from the lighting control host. The panel button is part of the user interface, allowing the operator to directly control the lighting system, and may be used to manually control certain lighting functions or system settings. CAN communication line: used to realize data communication between the lighting control host and the vehicle controller to ensure real-time transmission of information and coordinated work of the system. Other signal lines: used to connect other components in the system, such as sensors or other control units, to achieve more complex control logic. The entire system is designed to improve the safety and operating convenience of mining vehicles, and through the integrated lighting control system, it ensures that appropriate lighting and signal indications are provided under various working conditions.

[0099] In an optional embodiment, the operating mode determination unit can quickly identify and respond to different control signals, so that the system can dynamically allocate power to corresponding intrinsically safe electrical equipment according to actual operating modes and requirements.

[0100] Optionally, the power distribution device further comprises a delivery unit, and the delivery unit is connected to the working mode determination unit;

[0101] The transmission unit is used to plan the transmission line of the intrinsically safe direct current output by the power supply distribution device according to the intrinsically safe electrical equipment that needs to be controlled; and to send the intrinsically safe direct current to the corresponding intrinsically safe electrical equipment in the intrinsically safe electrical sub-unit along the transmission line.

[0102] Specifically, the transmission unit is connected to the working mode judgment unit, so that the transmission line of intrinsically safe DC power can be planned according to the intrinsically safe electrical equipment that needs to be controlled. According to the instructions of the working mode judgment unit, the intrinsically safe electrical sub-unit that needs to be powered is identified and determined, and then the transmission unit plans an optimal transmission line to ensure that the intrinsically safe DC power can be efficiently and accurately delivered to the corresponding intrinsically safe electrical equipment. Among them, the reserved interface provides a physical connection point for the transmission unit to achieve effective distribution and management of intrinsically safe DC power; this function of the transmission unit ensures that in a complex mining lighting control system, electricity can be safely and reliably delivered to each intrinsically safe electrical sub-unit along a predetermined path, thereby improving the efficiency and response speed of the system.

[0103] In an optional embodiment, the intelligent planning and delivery capabilities of the delivery unit enable the intrinsically safe direct current to be delivered to designated intrinsically safe electrical equipment quickly and accurately according to actual needs, thereby avoiding waste of electricity and reducing the risk of system failures caused by power supply errors or delays.

[0104] Optionally, the lighting control system further comprises a non-intrinsically safe electrical device and a non-intrinsically safe power supply unit, wherein the non-intrinsically safe power supply unit is connected to the non-intrinsically safe electrical device and the power conversion device respectively;

[0105] The non-intrinsically safe power supply unit is used to output the non-intrinsically safe direct current to the non-intrinsically safe electrical device and the power conversion device;

[0106] The non-intrinsically safe electrical device is used to control lighting when receiving the non-intrinsically safe direct current.

[0107] Specifically, the intrinsically safe power supply unit can provide the necessary power for the system, while ensuring that the power conversion device can effectively convert the non-intrinsically safe power supply into an intrinsically safe power supply to adapt to different use environments and safety requirements. This embodiment expands the application scope and compatibility of the system by introducing non-intrinsically safe electrical devices and non-intrinsically safe power supply units. As an important part of the system, the non-intrinsically safe power supply unit is responsible for providing non-intrinsically safe direct current to the non-intrinsically safe electrical devices and the power conversion device; this design allows the non-intrinsically safe electrical devices to perform lighting work when receiving non-intrinsically safe direct current, and the power conversion device converts these non-intrinsically safe direct currents into intrinsically safe direct currents for use by the intrinsically safe electrical devices.

[0108] In an optional embodiment, the introduction of a non-intrinsically safe power supply unit enables the system to directly utilize the existing non-intrinsically safe power supply to power the non-intrinsically safe electrical devices. At the same time, the power conversion device ensures the supply of safe intrinsically safe power to the intrinsically safe electrical devices, thereby significantly improving the safety and flexibility of the lighting control system.

[0109] Combination Figure 7 As shown, the present invention also provides a lighting control method, which is applied to the lighting control system, wherein the lighting control system comprises a power conversion device, a power distribution device and an intrinsically safe electrical device connected in sequence, wherein the intrinsically safe electrical device comprises a plurality of intrinsically safe sub-electrical units, and each of the intrinsically safe sub-electrical units is connected to the power distribution device;

[0110] The lighting control method comprises:

[0111] When receiving non-intrinsically safe direct current, the power conversion device converts the non-intrinsically safe direct current into intrinsically safe direct current, and transmits the intrinsically safe direct current to the power distribution device;

[0112] By means of the power distribution device, the intrinsically safe electrical sub-unit that needs to be powered is determined according to the working mode of the lighting control system, and the intrinsically safe direct current is transmitted to the corresponding intrinsically safe electrical sub-unit;

[0113] When the intrinsically safe direct current is received by the intrinsically safe sub-electrical unit, lighting control is performed.

[0114] The lighting control method of the present invention, through a power conversion device, a power distribution device and an intrinsically safe electrical device, can achieve significantly improved power output capacity while maintaining the size and weight of the lighting control host unchanged, which is compatible with the small size of the lighting control host and solves the space occupation caused by the large size of the intrinsically safe power supply. Specifically, firstly, the non-intrinsically safe direct current is efficiently converted into intrinsically safe direct current through the power conversion device, so that the intrinsically safe sub-electrical units installed in the mining equipment can work with the converted intrinsically safe direct current; secondly, the power distribution device distributes power according to the working mode of the lighting control system to ensure that only the intrinsically safe sub-electrical units that need to work are powered, such as CAN communication or line connection, so as to use the communication connection to realize the switching of the on / off control mode of the lighting control; finally, multiple intrinsically safe sub-electrical units in the intrinsically safe electrical device can independently receive intrinsically safe direct current and perform lighting control. This modular design not only improves the flexibility of the system, but also makes the power distribution more precise, so that without increasing the size and weight of the main machine, the mining equipment can still use intrinsically safe electrical appliances without being equipped with an intrinsically safe power supply, making full use of the characteristics of small size, light weight, low power consumption and low cost of intrinsically safe electrical appliances, improving the safety level of many mining equipment such as transport locomotives, standardizing the safety signal equipment that the equipment should have but cannot be installed, and improving the performance and safety of the lighting control system.

[0115] Combination Figure 8 As shown, the present invention provides an electronic device 800, including a memory 810 and a processor 820;

[0116] The memory 810 is used to store computer programs;

[0117] The processor 820 is used to implement the above-mentioned water drill bit cleaning method when executing the computer program.

[0118] In other words, an electronic device 800 includes a memory 810 and a processor 820 coupled to the memory 810; the memory 810 is configured to store a computer program; and the processor 820 is configured to perform the following operations when executing the computer program:

[0119] When receiving non-intrinsically safe direct current, the power conversion device converts the non-intrinsically safe direct current into intrinsically safe direct current, and transmits the intrinsically safe direct current to the power distribution device;

[0120] By means of the power distribution device, the intrinsically safe electrical sub-unit that needs to be powered is determined according to the working mode of the lighting control system, and the intrinsically safe direct current is transmitted to the corresponding intrinsically safe electrical sub-unit;

[0121] When the intrinsically safe direct current is received by the intrinsically safe sub-electrical unit, lighting control is performed.

[0122] The electronic device of the present invention, through a power conversion device, a power distribution device and an intrinsically safe electrical device, achieves significantly improved power output capacity while maintaining the size and weight of the lighting control host unchanged, which is compatible with the small size of the lighting control host and solves the space occupation caused by the large size of the intrinsically safe power supply. Specifically, firstly, the non-intrinsically safe direct current is efficiently converted into intrinsically safe direct current through the power conversion device, so that the intrinsically safe sub-electrical units installed in the mining equipment can work with the converted intrinsically safe direct current; secondly, the power distribution device distributes power according to the working mode of the lighting control system to ensure that only the intrinsically safe sub-electrical units that need to work are powered, such as CAN communication or line connection, so as to use the communication connection to realize the switching of the on / off control mode of the lighting control; finally, multiple intrinsically safe sub-electrical units in the intrinsically safe electrical device can independently receive intrinsically safe direct current and perform lighting control. This modular design not only improves the flexibility of the system, but also makes the power distribution more precise, so that without increasing the size and weight of the main machine, the mining equipment can still use intrinsically safe electrical appliances without being equipped with an intrinsically safe power supply, making full use of the characteristics of small size, light weight, low power consumption and low cost of intrinsically safe electrical appliances, improving the safety level of many mining equipment such as transport locomotives, standardizing the safety signal equipment that the equipment should have but cannot be installed, and improving the performance and safety of the lighting control system.

[0123] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. A lighting control system, characterized in that: The lighting control system comprises a power conversion device, a power distribution device and an intrinsically safe electrical device connected in sequence, wherein the intrinsically safe electrical device comprises a plurality of intrinsically safe sub-electrical units, each of which is connected to the power distribution device; The power conversion device is used for converting the non-intrinsically safe direct current into intrinsically safe direct current when receiving the non-intrinsically safe direct current, and transmitting the intrinsically safe direct current to the power distribution device; The power supply distribution device is used to determine the intrinsically safe electrical sub-unit that needs to be powered according to the working mode of the lighting control system, and transmit the intrinsically safe direct current to the corresponding intrinsically safe electrical sub-unit; The intrinsically safe sub-electrical unit is used to control lighting when receiving the intrinsically safe direct current.

2. The lighting control system according to claim 1, characterized in that: The power conversion device comprises a plurality of independently arranged intrinsically safe power supply units, each of which comprises a DC / DC circuit unit; The intrinsically safe power supply unit is used to input the non-intrinsically safe direct current into the DC / DC circuit unit when receiving the non-intrinsically safe direct current; The DC / DC circuit unit is used to convert the non-intrinsically safe direct current into pulsating direct current, and filter the pulsating direct current to obtain the intrinsically safe direct current.

3. The lighting control system according to claim 2, characterized in that: Each of the intrinsically safe power supply units also includes at least one protection circuit unit, and the protection circuit unit and the DC / DC circuit unit in each of the intrinsically safe power supply units are connected to each other; The protection circuit unit is used to monitor the power supply temperature of the intrinsically safe power supply unit; and adjust the intrinsically safe direct current delivered by the DC / DC circuit unit to the power supply distribution device according to the power supply temperature.

4. The lighting control system according to claim 3, characterized in that: The protection circuit unit includes a temperature monitoring module and a voltage limiting module connected to each other; The temperature module is used to monitor the power supply temperature of the intrinsically safe power supply unit; The voltage limiting module is used to reduce the intrinsically safe direct current delivered by the DC / DC circuit unit to the power distribution device when the power supply temperature exceeds a first preset threshold value; When the power supply temperature exceeds a second preset threshold, stopping the transmission of the intrinsically safe direct current; The first preset threshold is smaller than the second preset threshold.

5. The lighting control system according to claim 4, characterized in that: The voltage limiting module is also used for: When the power supply temperature exceeds the first preset threshold, obtaining a temperature difference between the power supply temperature and the first preset threshold; According to the temperature difference, determining the expected value of the intrinsically safe direct current by a preset linear rule; The intrinsically safe direct current is reduced to the expected value through the switch tube of the voltage limiting module.

6. The lighting control system according to claim 1, characterized in that: The power supply distribution device includes a working mode determination unit, and the intrinsically safe electrical subunit includes a plurality of independently arranged intrinsically safe electrical devices; The working mode determination unit is used to obtain the control signal of the electrical unit; When the control signal is a line signal, determining a switch that sends the line signal according to the line signal, and determining the intrinsically safe electrical equipment according to the switch; When the control signal is a CAN signal, the intrinsically safe electrical sub-unit to be controlled is determined according to the message control bit of the CAN signal.

7. The lighting control system according to claim 6, characterized in that: The power supply distribution device further comprises a delivery unit, and the delivery unit is connected to the working mode determination unit; The transmission unit is used to plan the transmission line of the intrinsically safe direct current output by the power supply distribution device according to the intrinsically safe electrical equipment that needs to be controlled; and to send the intrinsically safe direct current to the corresponding intrinsically safe electrical equipment in the intrinsically safe electrical sub-unit along the transmission line.

8. The lighting control system according to claim 1, characterized in that: The lighting control system further comprises a non-intrinsically safe electrical device and a non-intrinsically safe power supply unit, wherein the non-intrinsically safe power supply unit is connected to the non-intrinsically safe electrical device and the power conversion device respectively; The non-intrinsically safe power supply unit is used to output the non-intrinsically safe direct current to the non-intrinsically safe electrical device and the power conversion device; The non-intrinsically safe electrical device is used to control lighting when receiving the non-intrinsically safe direct current.

9. A lighting control method, characterized in that: The lighting control method is applied to the lighting control system, which includes a power conversion device, a power distribution device and an intrinsically safe electrical device connected in sequence, wherein the intrinsically safe electrical device includes a plurality of intrinsically safe sub-electrical units, each of which is connected to the power distribution device; The lighting control method comprises: When receiving non-intrinsically safe direct current, the power conversion device converts the non-intrinsically safe direct current into intrinsically safe direct current, and transmits the intrinsically safe direct current to the power distribution device; By means of the power distribution device, the intrinsically safe electrical sub-unit that needs to be powered is determined according to the working mode of the lighting control system, and the intrinsically safe direct current is transmitted to the corresponding intrinsically safe electrical sub-unit; When the intrinsically safe direct current is received by the intrinsically safe sub-electrical unit, lighting control is performed.

10. An electronic device, characterized in that: including memory and processor; The memory is used to store computer programs; The processor is used to implement the lighting control method as claimed in claim 9 when executing the computer program.

Images