A heating control system for controlling different heating control rate windshields

Abstract

The application discloses a kind of for controlling different heating control rate windshield heating control system, in the power input module of system, power supply input unit is powered to windshield heating control box;AC power input unit is connected to the heating cable of electric heating conductive film of transparent bulletproof windshield glass by windshield heating control box, to control the on-off state of AC power input unit by windshield heating control box;Electric heating conductive film in transparent bulletproof windshield glass is plated inside sapphire layer or inorganic glass layer inside;Windshield heating control box obtains the film type of transparent bulletproof windshield glass by windshield type input module, and the corresponding control circuit is selected according to film type by processor to carry out heating control to transparent bulletproof windshield glass.The technical scheme provided by the application can realize that two different configurations of transparent bulletproof windshield glass are heated and controlled using different heating control rates by one heating control box.

Description

TECHNICAL FIELD

[0001] The present application relates to, but is not limited to, the technical field of structural design of electrically heated transparent bulletproof windshield for helicopters, and particularly relates to a heating control system for controlling windshields with different heating control rates. BACKGROUND

[0002] The electrically heated transparent bulletproof windshield, as a structural component of the helicopter cockpit, is installed on the front fuselage of the helicopter and is an important area for the pilot to observe the outside world and for bulletproof protection. The windshield heating control box works with the transparent bulletproof windshield. The pilot turns on the anti-icing switch of the windshield according to the need for anti-icing. The windshield heating control box judges according to the temperature signal collected by the temperature sensor built in the windshield. The power supply of the heating element in the windshield is turned on or off to automatically control the temperature of the windshield, so that the temperature of the windshield is maintained within a specified range, the "anti-icing" function of the windshield is realized, and the visibility of the windshield within the flight envelope is ensured.

[0003] The transparent bulletproof windshield is composed of four or more layers of materials with different characteristics, including sapphire transparent ceramic, inorganic glass, organic glass, and polycarbonate. The heating conductive film of the transparent bulletproof windshield is usually plated in the following positions: the conductive film is plated on the outermost sapphire, or the conductive film is plated on the inner inorganic glass. Since the control temperature and heating power of the conductive film in the above two different plating positions are different, the heating control rate is different, which results in the fact that one heating control box cannot control two types of transparent bulletproof windshields, and the LRU-level maintenance during the use and maintenance of the helicopter cannot be realized. SUMMARY

[0004] The purpose of the present application is to solve the problem that in the existing windshield heating system, since one heating control box can only control one type of transparent bulletproof windshield, it is difficult to realize LRU-level maintenance during the use and maintenance of the helicopter, and the cost of spare parts in the field is increased.

[0005] The technical solution of the present application is that the present application provides a heating control system for controlling windshields with different heating control rates, which comprises a power input module, a windshield heating control box, and a transparent bulletproof windshield.

[0006] The power input module comprises a DC power input unit and an AC power input unit, which is used to supply power to the windshield heating control box through the DC power input unit.

[0007] The alternating current power input unit is connected to the heating cable of the electric heating conductive film of the transparent bulletproof windshield glass through the windshield heating control box, so as to control the on-off state of the alternating current power input unit through the windshield heating control box.

[0008] The transparent bulletproof windshield glass comprises a plurality of material layers, an electric heating conductive film plated on one of the material layers, and a temperature sensor; wherein the plurality of material layers comprise, from outside to inside, a sapphire layer, an inorganic glass layer, an organic glass layer, and a polycarbonate layer, and the electric heating conductive film is plated on the inside of the sapphire layer or the inside of the inorganic glass layer.

[0009] The windshield heating control box comprises an electrically connected windshield type input module and a processor, and the windshield type input module is electrically connected with the heating cable of the transparent bulletproof windshield glass; the windshield heating control box is used for obtaining the film plating type of the transparent bulletproof windshield glass through the windshield type input module, and the processor is used for selecting a corresponding control circuit according to the film plating type to control the heating of the transparent bulletproof windshield glass.

[0010] Optionally, in the windshield heating control system for controlling windshields with different heating control rates as described above,

[0011] For the first configuration of the transparent bulletproof windshield glass with the electric heating conductive film plated on the sapphire layer, and the second configuration of the transparent bulletproof windshield glass with the electric heating conductive film plated on the inorganic glass layer, the ice prevention control temperature and the heating power are different.

[0012] Optionally, in the windshield heating control system for controlling windshields with different heating control rates as described above, the windshield heating control box further comprises a temperature acquisition module.

[0013] The input end of the temperature acquisition and processing module is connected with the temperature sensor of the transparent bulletproof windshield glass, and the output end is connected with the processor.

[0014] The windshield heating control box is further used for collecting the temperature of the transparent bulletproof windshield glass in real time through the temperature acquisition module and feeding back to the processor, starting heating when the feedback temperature is lower than the lower limit of the heating temperature threshold, stopping heating when the feedback temperature is higher than the upper limit of the heating temperature threshold, and outputting a fault alarm signal through the processor to stop the heating work when the feedback temperature is higher than the over-limit temperature threshold.

[0015] Optionally, in the windshield heating control system for controlling windshields with different heating control rates as described above, the windshield heating control box further comprises a power-on self-test module.

[0016] The first input end of the power-on self-test module is connected to a path between the temperature acquisition module and the temperature sensor, the second input end is connected to a path between the AC power input unit and the electric heating conductive film, and the output end is connected to a path between the temperature acquisition module and the processor;

[0017] The windshield heating control box is also used for detecting a path formed between a temperature sensor and a temperature acquisition module in the transparent bulletproof windshield glass, and detecting a heating current in a path formed between an AC power input unit and an electric heating conductive film, and stopping the heating function when a path fault is detected.

[0018] Optionally, in the heating control system for controlling windshields with different heating control rates as described above,

[0019] The heating cable of the first configuration transparent bulletproof windshield glass is provided with a loop cable, and the heating cable of the second configuration transparent bulletproof windshield glass is provided with an open circuit cable; or,

[0020] The heating cable of the first configuration transparent bulletproof windshield glass is provided with an open circuit cable, and the heating cable of the second configuration transparent bulletproof windshield glass is provided with a loop cable.

[0021] The loop cable or the open circuit cable is connected to the windshield type input module, one end of the loop cable or the open circuit cable is grounded through the windshield type input module, and the other end is connected to the processor through the windshield type input module.

[0022] Optionally, in the heating control system for controlling windshields with different heating control rates as described above,

[0023] The windshield heating control box obtains the film type of the transparent bulletproof windshield glass through the windshield type input module in the following manner:

[0024] Before the transparent bulletproof windshield glass starts heating control, the loop cable or the open circuit cable provided on the transparent bulletproof windshield glass is detected through the windshield type input module to form a 0 / 1 discrete signal input to the processor MCU. The loop cable is signal 0, indicating the heating control rate of a windshield glass of one configuration, and the open circuit cable is signal 1, indicating the heating control rate of a windshield glass of another configuration.

[0025] Optionally, in the heating control system for controlling windshields with different heating control rates as described above,

[0026] The processor includes two control circuits, the configuration of the windshield glass is determined according to the discrete signal input from the windshield type input module, the corresponding control circuit is selected for heating control, and the anti-icing control temperature and the heating power of different control circuits are different.

[0027] Optionally, in the heating control system for controlling windshields with different heating control rates as described above,

[0028] The resistance value of the electric heating conductive film in the second configuration of transparent bulletproof windshield glass is much lower than that in the first configuration of transparent bulletproof windshield glass.

[0029] Optionally, in the heating control system for controlling windshields with different heating control rates as described above, the alternating current power input unit adopts a three-phase alternating current 115V power input unit.

[0030] The electric heating conductive film includes a three-phase heating resistor, and the three-phase alternating current 115V power input unit adopts a delta connection form.

[0031] The three-phase cable of the alternating current power input unit in the power input module is divided into two cables at the output end of the relay inside the windshield heating control box, forming a total of six cables; the three-phase heating resistor and the six cables adopt a delta connection form, wherein a line voltage is formed between A1 and B1, a line voltage is formed between B2 and C2, and a line voltage is formed between C1 and A2.

[0032] Optionally, in the heating control system for controlling windshields with different heating control rates as described above,

[0033] For the first configuration of transparent bulletproof windshield glass with an electric heating conductive film plated on the sapphire layer, the temperature sensor is arranged on the electric heating conductive film of the outermost sapphire layer of the transparent bulletproof windshield glass.

[0034] For the second configuration of transparent bulletproof windshield glass with an electric heating conductive film plated on the inorganic glass layer, the temperature sensor is arranged on the electric heating conductive film of the inorganic glass layer in the inner layer of the transparent bulletproof windshield glass.

[0035] The upper and lower limits of the heating temperature threshold in the second configuration of transparent bulletproof windshield glass are higher than the upper and lower limits of the heating temperature threshold in the first configuration of transparent bulletproof windshield glass.

[0036] The beneficial technical effect of the present application is that the warming control system for controlling windshields with different warming control rates provided by the embodiments of the present application comprises a power input module, a windshield warming control box and a transparent bulletproof windshield glass, wherein the power input module comprises a DC power input unit and an AC power input unit, the DC power input unit supplies power to the windshield warming control box, the AC power input unit is connected to the warming cable of the electric heating conductive film of the transparent bulletproof windshield glass through the windshield warming control box to control the on-off state of the AC power input unit through the windshield warming control box, in addition, the electric heating conductive film in the transparent bulletproof windshield glass is plated on the inside of the sapphire layer or the inside of the inorganic glass layer, the windshield type input module in the windshield warming control box is electrically connected to the warming cable of the transparent bulletproof windshield glass, the windshield warming control box is used to obtain the film type of the transparent bulletproof windshield glass through the windshield type input module, and the corresponding control circuit is selected according to the film type to control the warming of the transparent bulletproof windshield glass by the processor. The warming control system with the structural form can control the warming control rates of the transparent bulletproof windshield glasses with different configurations, realizes the electric heating function of the transparent bulletproof windshield glass, realizes the warming control of the two transparent bulletproof windshield glasses with different configurations by using one windshield warming control box and different warming control rates, achieves the LRU level replacement of the warming control system in the field use, and greatly reduces the field spare part cost. BRIEF DESCRIPTION OF DRAWINGS

[0037] The accompanying drawings are used to provide a further understanding of the technical solutions of the present application, and constitute a part of the specification, and are used to explain the technical solutions of the present application together with the embodiments of the present application, and do not constitute a limitation on the technical solutions of the present application.

[0038] Figure 1 The overall structural schematic diagram of the warming control system for controlling windshields with different warming control rates provided by the embodiments of the present application is shown in the figure.

[0039] Figure 2 The connection schematic diagram of the electrically connected windshield type input module and the loop cable of the transparent bulletproof windshield glass in the warming control system for controlling windshields with different warming control rates provided by the embodiments of the present application is shown in the figure.

[0040] Figure 3 The connection schematic diagram of the electrically connected windshield type input module and the open circuit cable of the transparent bulletproof windshield glass in the warming control system for controlling windshields with different warming control rates provided by the embodiments of the present application is shown in the figure. DETAILED DESCRIPTION

[0041] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

[0042] As explained in the background section, the importance of electrically heated transparent bulletproof windshields in helicopter structures is significant. In existing windshield heating systems, because a single heating control box can only control one type of transparent bulletproof windshield, it is difficult to achieve LRU-level maintenance during helicopter operation and maintenance, and this increases the cost of field spare parts.

[0043] To address the aforementioned issues, this invention provides a heating control system for controlling windshields with different heating control rates. This system enables anti-icing control of two different windshield configurations using a single heating control box, achieving LRU-level maintenance for the windshield heating system during field use and significantly reducing the cost of field spare parts.

[0044] The present invention provides the following specific embodiments, which can be combined with each other. For the same or similar concepts or processes, they may not be described again in some embodiments.

[0045] Figure 1 This is a schematic diagram of the overall structure of a heating control system for controlling windshields with different heating control rates, provided as an embodiment of the present invention. Figure 1 As shown, the components of the heating control system for controlling windshields with different heating control rates provided in this embodiment of the invention include: a power input module, a windshield heating control box, and a transparent bulletproof windshield glass.

[0046] like Figure 1 In the heating control system shown, the power input module includes a DC power input unit and an AC power input unit, which are used to supply power to the windshield heating control box through the DC power input unit.

[0047] In this embodiment of the invention, the AC power input unit is connected to the heating cable of the electrically heated conductive film of the transparent bulletproof windshield through a windshield heating control box, so as to control the on / off state of the AC power input unit through the windshield heating control box.

[0048] The transparent bulletproof windshield in this embodiment of the invention includes: a multilayer material layer, an electrically heated conductive film and a temperature sensor deposited on one of the material layers; wherein, the multilayer material layer includes a sapphire layer, an inorganic glass layer, an organic glass layer and a polycarbonate layer arranged sequentially from the outside to the inside, and the electrically heated conductive film can be deposited on the inside of the sapphire layer or on the inside of the inorganic glass layer.

[0049] The windshield heating control box in the embodiment of the application comprises: a windshield type input module and a processor which are electrically connected, and the windshield type input module is electrically connected with a heating cable of the transparent bulletproof windshield glass; the windshield heating control box is used for obtaining a film type of the transparent bulletproof windshield glass through the windshield type input module, and the processor selects a corresponding control circuit according to the film type to control the transparent bulletproof windshield glass.

[0050] In one implementation form of the embodiment of the application, for the first configuration transparent bulletproof windshield glass on which an electric heating conductive film is plated on a sapphire layer, and the second configuration transparent bulletproof windshield glass on which an electric heating conductive film is plated on an inorganic glass layer; since the thermal conductivity of the inorganic glass is far lower than that of the sapphire material, the anti-icing control temperature and the heating power of the transparent bulletproof windshield glass of the above two configurations are different.

[0051] In one implementation form of the embodiment of the application, Figure 1 The windshield heating control box in the embodiment of the application can further comprise: a temperature acquisition module; an input end of the temperature acquisition module is connected with a temperature sensor of the transparent bulletproof windshield glass, and an output end of the temperature acquisition module is connected with the processor; the temperature acquisition module can realize the automatic heating control function and the overheat protection function.

[0052] In the implementation form, the windshield heating control box can collect the temperature of the transparent bulletproof windshield glass in real time through the temperature acquisition module and feed back the temperature to the processor; when the feedback temperature is lower than the lower limit of the heating temperature threshold, the heating is started; when the feedback temperature is higher than the upper limit of the heating temperature threshold, the heating is stopped; and when the feedback temperature is higher than the over-limit temperature threshold, the processor outputs a fault alarm signal, that is, the high-temperature over-limit function is realized to stop the heating work.

[0053] In one implementation form of the embodiment of the application, Figure 1 The windshield heating control box in the embodiment of the application can further comprise: a power-on self-test module; a first input end of the power-on self-test module is connected to a path between the temperature acquisition module and the temperature sensor, a second input end of the power-on self-test module is connected to a path between the AC power input unit and the electric heating conductive film, and an output end of the power-on self-test module is connected to a path between the temperature acquisition module and the processor.

[0054] In the implementation form, the windshield heating control box is further used for detecting a path formed between the temperature sensor and the temperature acquisition module in the transparent bulletproof windshield glass, and detecting a heating current of a path formed between the AC power input unit and the electric heating conductive film; when a path fault is detected, the fault is fed back to the processor, so that the processor controls to stop the heating function, that is, the processor disconnects the path between the AC power input unit and the electric heating conductive film.

[0055] In an optional implementation manner of the embodiment of the present application, the heating cable of the first configuration transparent bulletproof windshield is provided with a loop cable, and the heating cable of the second configuration transparent bulletproof windshield is provided with an open circuit cable; in another optional implementation manner of the embodiment of the present application, the heating cable of the first configuration transparent bulletproof windshield is provided with an open circuit cable, and the heating cable of the second configuration transparent bulletproof windshield is provided with a loop cable.

[0056] As shown in FIG. 1, it is a connection diagram of the windscreen type input module and the loop cable of the transparent bulletproof windshield in the heating control system for controlling windshields with different heating control rates provided by the embodiment of the present application; as shown in FIG. 2, it is a connection diagram of the windscreen type input module and the open circuit cable of the transparent bulletproof windshield in the heating control system for controlling windshields with different heating control rates provided by the embodiment of the present application. Figure 2 Figure 3 As shown in FIG. 1, it is a connection diagram of the windscreen type input module and the loop cable of the transparent bulletproof windshield in the heating control system for controlling windshields with different heating control rates provided by the embodiment of the present application; as shown in FIG. 2, it is a connection diagram of the windscreen type input module and the open circuit cable of the transparent bulletproof windshield in the heating control system for controlling windshields with different heating control rates provided by the embodiment of the present application.

[0057] In this implementation manner, the loop cable or the open circuit cable is connected to the electrically connected windscreen type input module, one end of the loop cable or the open circuit cable is grounded through the electrically connected windscreen type input module, and the other end of the loop cable or the open circuit cable is connected to the processor through the electrically connected windscreen type input module.

[0058] Since the ice control temperature and the heating power of the windshields of different configurations are different, the connection mode of the loop cable or the open circuit cable is set to select the correct heating control rate after judging the corresponding control mode of the transparent bulletproof windshields of the two configurations.

[0059] In an implementation manner of the embodiment of the present application, the windscreen heating control box obtains the film type of the transparent bulletproof windshield through the windscreen type input module in the following manner:

[0060] Before the transparent bulletproof windshield executes the heating control, the loop cable or the open circuit cable provided on the transparent bulletproof windshield is detected through the windscreen type input module to form a 0 / 1 discrete signal input to the processor MCU, the loop cable is signal 0, indicating the heating control rate of the windshield of one configuration, and the open circuit cable is signal 1, indicating the heating control rate of the windshield of another configuration.

[0061] Corresponding to the different heating control rates of the transparent bulletproof windshields of the above two configurations, two control circuits are included in the processor, the configuration of the windshield is determined according to the discrete signal input from the windscreen type input module, the corresponding control circuit is selected for heating control, and the ice control temperature and the heating power of the different control circuits are different.

[0062] ​It should be noted that, in this embodiment of the invention, the resistance value of the electrically heated conductive film in the second configuration transparent bulletproof windshield needs to be much lower than the resistance value of the electrically heated conductive film in the first configuration transparent bulletproof windshield.

[0063] Since the thermal conductivity of inorganic glass is much lower than that of sapphire, when an electric heating film is deposited on inorganic glass, its resistance value must be much lower than that of sapphire in order to improve the heating power.

[0064] In one implementation of this invention, the AC power input unit is, for example, a three-phase AC 115V power input unit.

[0065] In this implementation, the electrically heated conductive film includes a three-phase heating resistor, which is connected to the three-phase AC 115V power input unit in a delta configuration. The resistance values ​​of the three-phase heating resistors in the electrically heated conductive film are equivalent, which helps to increase the line voltage. Under the condition of a certain power, the heating resistor can be increased and the thickness of the heating resistor can be reduced, thereby improving the light transmittance.

[0066] like Figure 1 As shown, the three-phase cables of the AC power input unit in the power input module are each split into two cables at the output end of the relay inside the windshield heating control box, forming a total of six cables. The six cables are connected to the three-phase heating resistor in a delta configuration, where a line voltage is formed between A1 and B1, between B2 and C2, and between C1 and A2.

[0067] Because the three-phase cables of the AC power input unit are connected in a delta configuration to the three-phase heating resistors, the line voltage U = √3 × 115V ≈ 199.2V, which greatly improves the line voltage. Under a constant power, the resistance R on the transparent bulletproof windshield is calculated using the following formula:

[0068] R = U 2 / P;

[0069] According to the formula, when the power P is constant, increasing the line voltage U can increase the resistance value R on the transparent bulletproof windshield, thereby reducing the thickness of the heating resistor and achieving the purpose of increasing light transmittance.

[0070] In one implementation of this invention, for a first-configuration transparent bulletproof windshield with an electrically heated conductive film deposited on a sapphire layer, a temperature sensor is disposed on the electrically heated conductive film of the outermost sapphire layer of the transparent bulletproof windshield. Conversely, for a second-configuration transparent bulletproof windshield with an electrically heated conductive film deposited on an inorganic glass layer, a temperature sensor is disposed on the electrically heated conductive film of the inorganic glass layer of the inner layer of the transparent bulletproof windshield.

[0071] It should be noted that the upper and lower limits of the heating temperature threshold in the second configuration transparent bulletproof windshield glass are higher than the upper and lower limits of the heating temperature threshold in the first configuration transparent bulletproof windshield glass.

[0072] The heating control system for controlling different heating control rate windshields provided by the embodiment of the present application comprises a power input module, a windshield heating control box and a transparent bulletproof windshield glass. The power input module comprises a DC power input unit and an AC power input unit, and the DC power input unit supplies power to the windshield heating control box. The AC power input unit is connected to the heating cable of the electric heating conductive film of the transparent bulletproof windshield glass through the windshield heating control box, so as to control the on-off state of the AC power input unit through the windshield heating control box. In addition, the electric heating conductive film in the transparent bulletproof windshield glass is plated on the inside of the sapphire layer or the inside of the inorganic glass layer. The windshield type input module in the windshield heating control box is electrically connected to the heating cable of the transparent bulletproof windshield glass. The windshield heating control box is used to obtain the film type of the transparent bulletproof windshield glass through the windshield type input module, and the processor selects the corresponding control circuit according to the film type to control the heating of the transparent bulletproof windshield glass. The heating control system with the structure can control different heating control rates for different configurations of the transparent bulletproof windshield glass. Not only the electric heating function of the transparent bulletproof windshield glass is realized, but also one heating control box is used to control the heating of two different configurations of the transparent bulletproof windshield glass with different heating control rates, so that the LRU level replacement of the heating control system in the field use is realized, and the field spare part cost is greatly reduced. Specific embodiments:

[0074] Referring to Figure 1 The structure of the heating control system comprises a power input module, a windshield heating control box and a transparent bulletproof windshield glass. The power input module comprises a DC 28V power input unit and a three-phase AC 115V power input unit, and the DC 28V power input unit supplies power to the windshield heating control box.

[0075] In this embodiment, the three-phase AC 115V power input unit is connected to the electric heating conductive film of the transparent bulletproof windshield glass through the windshield heating control box, so as to control the on-off state of the AC power input unit through the windshield heating control box. In the specific implementation, the DC 28V power input unit controls the relay switch on the three-phase AC line of the three-phase AC 115V power input unit through the processor MCU in the heating control box, so as to realize the control of the heating function of the transparent bulletproof windshield glass.

[0076] In the embodiment, the windshield heating control box is internally provided with an electrically connected windshield type input module and a processor MCU, a temperature acquisition module, a power-on self-test module, and a judgment system of two windshield heating cables.

[0077] The temperature acquisition module of the windshield heating control box is provided with a heating temperature feedback, an automatic control heating function, and an overheating protection function. The temperature acquisition module can collect the temperature of the transparent bulletproof windshield glass in real time and feed it back to the processor. When the temperature acquisition module feedback temperature is lower than the lower limit of the heating temperature threshold, heating starts. When the temperature acquisition module feedback temperature is higher than the upper limit of the heating temperature threshold, heating stops. When the temperature acquisition module feedback temperature is higher than the upper limit of the temperature threshold, the heating control box gives a fault alarm signal, i.e. a high temperature alarm to stop the heating work.

[0078] The windshield heating control box is provided with a loop cable and a break cable on the windshield heating cable of two different heating control rates. One of the windshield heating cables is provided with a loop cable, and the other of the windshield heating cables is provided with a break cable. Before the transparent bulletproof windshield glass executes the heating control, the loop cable or the break cable provided on the transparent bulletproof windshield glass is detected by the windshield type input module to form a 0 / 1 discrete signal input to the processor MCU. The loop cable is signal 0, indicating the heating control rate of one type of windshield glass. The break cable is signal 1, indicating the heating control rate of another type of windshield glass.

[0079] In the embodiment, two control circuits are provided in the processor MCU. When heating, the correct heating control rate is selected according to the discrete signal input from the windshield type input module.

[0080] In the embodiment, the power-on self-test module is internally provided in the heating control box. On the one hand, the power-on self-test module can detect the loop of the temperature acquisition module. On the other hand, the power-on self-test module can detect the heating current. If there is a fault, the heating function is stopped.

[0081] In the embodiment, the transparent bulletproof windshield glass is internally provided with an electric heating conductive film and a temperature sensor. The electric heating conductive film is plated on the outermost sapphire material or the inner inorganic glass. The temperature sensor is arranged on the electric heating conductive film.

[0082] It should be noted that since the thermal conductivity of inorganic glass is much lower than that of sapphire material, the resistance value of the electric heating film plated on the inorganic glass needs to be much lower than that of the electric heating film plated on the sapphire, so as to improve the heating power.

[0083] In the embodiment, three areas with equivalent resistance value can be arranged on the electric heating conductive film, i.e. three-phase heating resistor, and the three-phase connection is adopted with 115V three-phase AC power supply, which is beneficial to improve the line voltage, and in the case of constant power, the heating resistor can be increased and the thickness of the heating resistor can be reduced, thereby improving the light transmittance.

[0084] In the embodiment, one temperature sensor is arranged on the sapphire electric heating film at the outermost side of the transparent bulletproof windshield glass laminated structure, and the other temperature sensor is arranged on the inorganic glass electric heating film at the inner layer of the transparent bulletproof windshield glass laminated structure. In order to ensure the anti-icing temperature at the outermost side of the windshield, the temperature control points of the two structures are different, and the temperature control point of the temperature sensor arranged on the inorganic glass needs to be higher than that of the temperature sensor arranged on the sapphire.

[0085] Although the embodiments of the present application are disclosed as above, the content is only the embodiment adopted for the purpose of understanding the present application, and is not used to limit the present application. Any person skilled in the art of the present application can make any modification and change in the implementation form and details without departing from the spirit and scope of the present application, but the patent protection scope of the present application shall be subject to the scope defined by the appended claims.

Claims

1. A heating control system for controlling a heating control rate of a windshield, characterized by, The windscreen heating control system comprises a power input module, a windscreen heating control box and a transparent bulletproof windscreen, wherein the power input module comprises a DC power input unit and an AC power input unit, and the DC power input unit is used to supply power to the windscreen heating control box; the AC power input unit is connected to a heating cable of an electric heating conductive film of the transparent bulletproof windscreen through the windscreen heating control box, so as to control the on-off state of the AC power input unit through the windscreen heating control box; the transparent bulletproof windscreen comprises a plurality of material layers, an electric heating conductive film plated on one of the material layers and a temperature sensor, wherein the plurality of material layers comprise, from outside to inside, a sapphire layer, an inorganic glass layer, an organic glass layer and a polycarbonate layer, and the electric heating conductive film is plated on the inside of the sapphire layer or the inside of the inorganic glass layer; the windscreen heating control box comprises an electrically connected windscreen type input module and a processor, and the windscreen type input module is electrically connected to the heating cable of the transparent bulletproof windscreen; the windscreen heating control box is used to obtain the film plating type of the transparent bulletproof windscreen through the windscreen type input module, and the processor is used to select a corresponding control circuit to control the heating of the transparent bulletproof windscreen according to the film plating type.

2. The windscreen heating control system according to claim 1, wherein the ice prevention control temperature and the heating power are different for a first configuration transparent bulletproof windscreen with the electric heating conductive film plated on the sapphire layer and a second configuration transparent bulletproof windscreen with the electric heating conductive film plated on the inorganic glass layer. The windscreen heating control box further comprises a temperature acquisition module. The input end of the temperature acquisition and processing module is connected to the temperature sensor of the transparent bulletproof windscreen, and the output end is connected to the processor. The windscreen heating control box is further used to collect the temperature of the transparent bulletproof windscreen in real time through the temperature acquisition module and feed back to the processor, start heating when the feedback temperature is lower than the lower limit of the heating temperature threshold, stop heating when the feedback temperature is higher than the upper limit of the heating temperature threshold, and output a fault alarm signal through the processor to stop the heating work when the feedback temperature is higher than the over-limit temperature threshold. The windscreen heating control box further comprises a power-on self-test module. The first input end of the power-on self-test module is connected to the path between the temperature acquisition module and the temperature sensor, the second input end is connected to the path between the AC power input unit and the electric heating conductive film, and the output end is connected to the path between the temperature acquisition module and the processor. The windscreen heating control box is further used to detect the path formed between the temperature sensor and the temperature acquisition module in the transparent bulletproof windscreen, and detect the heating current of the path formed between the AC power input unit and the electric heating conductive film, and stop the heating function when a path fault is detected.

3. The heating control system for controlling a heating control rate windshield according to claim 2, wherein 5. The windscreen heating control system according to claim 4, wherein a return cable is arranged on the heating cable of the first configuration transparent bulletproof windscreen, and a break cable is arranged on the heating cable of the second configuration transparent bulletproof windscreen; or ​ ​ 4. The heating control system for controlling a heating control rate windshield according to claim 3, wherein ​ ​ ​ ​ ​ The heating cable of the first configuration transparent bulletproof windshield glass is provided with a broken circuit cable, and the heating cable of the second configuration transparent bulletproof windshield glass is provided with a loop cable; The loop cable or the broken circuit cable is connected to the windshield type input module, one end of the loop cable or the broken circuit cable is grounded through the windshield type input module, and the other end is connected to the processor through the windshield type input module.

6. The heating control system for controlling windshields with different heating control rates according to claim 5, wherein the windshield heating control box obtains the film coating type of the transparent bulletproof windshield glass through the windshield type input module in the following manner: Before the transparent bulletproof windshield glass starts to execute the heating control, the loop cable or the broken circuit cable provided on the transparent bulletproof windshield glass is detected through the windshield type input module, a 0 / 1 discrete signal is formed and input to the processor MCU, the loop cable is signal 0, indicating the heating control rate of the windshield glass of one configuration, and the broken circuit cable is signal 1, indicating the heating control rate of the windshield glass of another configuration.

7. The heating control system for controlling windshields with different heating control rates according to claim 5, wherein the processor includes two control circuits, the configuration of the windshield glass is determined according to the discrete signal input from the windshield type input module, the corresponding control circuit is selected for heating control, and the anti-icing control temperature and the heating power of different control circuits are different.

8. The heating control system for controlling windshields with different heating control rates according to claim 2, wherein the resistance value of the electric heating conductive film in the second configuration transparent bulletproof windshield glass is much lower than the resistance value of the electric heating conductive film in the first configuration transparent bulletproof windshield glass. The AC power input unit adopts a three-phase AC 115V power input unit; The electric heating conductive film includes a three-phase heating resistor, and the three-phase AC 115V power input unit adopts a delta connection form, The three-phase cables of the AC power input unit in the power input module are evenly divided into 2 cables at the output end of the relay inside the windshield heating control box, forming 6 cables in total; the three-phase heating resistor adopts a delta connection form, wherein a line voltage is formed between A1 and B1, a line voltage is formed between B2 and C2, and a line voltage is formed between C1 and A2.

9. The heating control system for controlling a heating control rate windshield according to any one of claims 1 to 8, characterized by, 10. The heating control system for controlling windshields with different heating control rates according to any one of claims 2-8, wherein for the first configuration transparent bulletproof windshield glass with an electric heating conductive film coated on the sapphire layer, the temperature sensor is arranged on the electric heating conductive film of the outermost sapphire layer of the transparent bulletproof windshield glass; For the second configuration transparent bulletproof windshield glass with an electric heating conductive film coated on the inorganic glass layer, the temperature sensor is arranged on the electric heating conductive film of the inorganic glass layer in the inner layer of the transparent bulletproof windshield glass; The upper limit and the lower limit of the heating temperature threshold in the second configuration transparent bulletproof windshield glass are higher than the upper limit and the lower limit of the heating temperature threshold in the first configuration transparent bulletproof windshield glass. ​ ​ ​ ​

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