Photoelectric detection circuit and method of heating device and heating device

Abstract

The invention relates to the technical field of detection control, in particular to a photoelectric detection circuit and method of a heating device and the heating device.The photoelectric detection circuit of the heating device comprises a starting control module which comprises a plurality of input ends and an output end and is used for outputting corresponding driving signals according to a plurality of received control signals; and the photoelectric detection module is connected with the output end of the starting control module and is used for starting a working mode according to the driving signal output by the starting control module so as to detect the position relationship between the heating bodies of the heating device. Therefore, chip interface resources can be saved, and the design cost is reduced.

Description

Technical Field

[0001] The present disclosure relates to the field of detection and control technology, and in particular to a photoelectric detection circuit and method for a heating device, and a heating device. Background Art

[0002] In folding skirting products with high heating power, two photoelectric switches are often needed to detect the expansion angles of the heater structures on the left and right sides respectively, so as to avoid the problem of excessive temperature rise caused by excessive heating power due to the proximity of the left and right heating elements when the skirting is folded.

[0003] In the prior art, one of the photoelectric switch detection methods is to use two photoelectric switch detection circuits to separately detect the heating elements on both sides of the skirting board. This requires three I / O (IN / OUT input / output) interfaces of the microcontroller and more peripheral devices.

[0004] Another photoelectric switch detection method is to simplify and combine the above photoelectric switch detection circuit, merge the two feedback signals into one signal, and use different voltage signals generated by voltage divider resistors with different resistance values ​​to distinguish and detect the expansion angles of the left heating element and the right heating element respectively. In this way, the function of the above photoelectric switch detection circuit is maintained and simplified. Although some peripheral devices and the I / O interface of a chip are saved, multiple I / O interfaces and peripheral devices are still required. The solution of the prior art not only consumes chip resources, but also has high design costs. Summary of the invention

[0005] The present disclosure provides a photoelectric detection circuit, method and heating device of a heating device to solve the problem of not only wasting chip resources but also high design cost in the above-mentioned background technology.

[0006] In a first aspect, the present disclosure provides a photoelectric detection circuit for a heating device, comprising:

[0007] A start control module, comprising a plurality of input terminals and an output terminal, for outputting corresponding drive signals according to a plurality of control signals received;

[0008] a photoelectric detection module connected to the output end of the start control module and used to start the working mode according to the driving signal output by the start control module to detect the positional relationship between the heating elements of the heating device;

[0009] Among them, each input end of the start-up control module respectively receives the switch control signal of the corresponding heating element in the heating device, so that when at least two heating elements in the heating device start working in response to their corresponding switch control signals, the start-up control module can output a driving signal to start the photoelectric detection module to detect the positional relationship between the working heating elements.

[0010] In one embodiment, the start-up control module includes a plurality of start-up control branches and a first resistor, wherein each of the start-up control branches includes a start-up transistor, a start-up diode and a start-up resistor, the base of the start-up transistor serves as an input end of the start-up control module, the collector of the start-up transistor is connected to a power supply through the start-up resistor, the emitter of the start-up transistor is grounded, and the anode of the start-up diode is connected to the collector of the start-up transistor; the cathodes of the start-up diodes in each of the start-up control branches are connected to each other and then grounded through the first resistor; the start-up control module outputs a voltage signal on the first resistor as the drive signal; wherein the resistance value of the first resistor is greater than the resistance value of the start-up resistor.

[0011] In one embodiment, the photoelectric detection module includes a second resistor, a switching transistor, a plurality of photoelectric detection branches and a voltage divider feedback unit, wherein the base of the switching transistor is connected to the output end of the startup control module through the second resistor, the emitter of the switching transistor is connected to a power supply, the collector of the switching transistor is connected to the input end of each of the photoelectric detection branches, the output end of each of the photoelectric detection branches is connected to the input end of the voltage divider feedback unit, and the photoelectric detection module outputs the voltage signal on the voltage divider resistor in the voltage divider feedback unit as a detection result.

[0012] In one embodiment, each of the photoelectric detection branches includes a photoelectric switch and two detection resistors. The anode of the photodiode and the collector of the detection transistor in the photoelectric switch are connected to each other and serve as the input end of the photoelectric detection branch. The cathode of the photodiode in the photoelectric switch is grounded through one of the detection resistors, and the emitter of the detection transistor in the photoelectric switch is connected to the input end of the voltage divider feedback unit through another detection resistor.

[0013] In one embodiment, the voltage divider feedback unit includes a first voltage divider resistor, a second voltage divider resistor and a capacitor, wherein the first ends of the first voltage divider resistor and the second voltage divider resistor are connected to each other as the input end of the voltage divider feedback unit, the second end of the first voltage divider resistor is grounded, and the second end of the second voltage divider resistor serves as the output end of the voltage divider feedback unit and is grounded through the capacitor.

[0014] In a second aspect, the present disclosure further provides a photoelectric detection method implemented based on the photoelectric detection circuit of the heating device as described above, comprising the following steps:

[0015] The switch control signal of the corresponding heating element in the heating device is provided to the start control module of the photoelectric detection circuit, so that when at least two heating elements in the heating device start working in response to their corresponding switch control signals, the start control module outputs a drive signal to start the photoelectric detection module to detect the positional relationship between the working heating elements.

[0016] In a third aspect, the present disclosure provides a heating device, comprising: a plurality of heating elements and the photoelectric detection circuit as described above.

[0017] In one embodiment, the heating device also includes a controller, and the signal output end of the controller is connected to a control switch for controlling the operation of the heating element and an input end of a start control module of the photoelectric detection circuit, so as to provide a switch control signal for starting the operation of the heating element, and the signal receiving end of the controller is connected to the output end of the photoelectric detection module of the photoelectric detection circuit, so as to receive the detection result output by the photoelectric detection module.

[0018] In some embodiments, the heating device includes a first and a second heating component that can be placed separately, and each of the heating components is provided with a plurality of the heating elements; the first and second signal output terminals of the controller are respectively connected to the first and second control switches, and the first and second control switches are respectively connected to the heating elements of the first and second heating components, so as to control the start-up of the heating elements of the first and second heating components, and at the same time, the first and second signal output terminals of the controller are also connected to the input terminal of the start-up control module of the photoelectric detection circuit, so as to start the photoelectric detection circuit to detect the positional relationship between the first and second heating components; the output terminal of the photoelectric detection module of the photoelectric detection circuit is connected to the third control switch, and the third control switch is connected to some of the heating elements of the first and second heating components, so as to control some of the heating elements in the first and second components to stop working when the positional relationship between the first and second heating components does not meet the preset conditions.

[0019] In some embodiments, the heating device is a skirting heating device, and the preset condition includes that the angle between the first and second heating components is less than a preset angle threshold.

[0020] The present disclosure provides a photoelectric detection circuit, method and heating device of a heating device, which includes a startup control module, which includes several input terminals and an output terminal, and is used to output corresponding drive signals according to several control signals received; a photoelectric detection module, which is connected to the output terminal of the startup control module, and is used to start the working mode according to the drive signal output by the startup control module to detect the positional relationship between the heating elements of the heating device. This can further promote the introduction and application of cost-reducing chips, thereby saving resources of chip I / O interfaces and reducing design costs.

[0021] On the other hand, the present invention starts the working mode according to the driving signal output by the starting control module through the photoelectric detection module to detect the positional relationship between the heating elements of the heating device when it is working. The positional relationship between the heating elements of the heating device will only be detected when the heating elements in two adjacent heating components of the heating device are turned on at the same time, which can greatly improve the service life of the switching device and at the same time improve the service life of the heating device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present disclosure will be described in more detail below based on embodiments and with reference to the accompanying drawings:

[0023] Figure 1 A circuit schematic diagram of a photoelectric detection circuit of a heating device provided in an embodiment of the present disclosure;

[0024] Figure 2 A circuit structure diagram of a heating device provided in an embodiment of the present disclosure;

[0025] Figure 3 An electrical load wiring diagram of a heating device provided in an embodiment of the present disclosure;

[0026] Figure 4 A working logic flow chart of two adjacent heating components of a heating device provided in an embodiment of the present disclosure when heating simultaneously.

[0027] In the drawings, the same reference numerals are used for the same components, and the drawings are not drawn to scale. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the technical solution of the present disclosure, and to fully understand and implement how the present disclosure applies technical means to solve technical problems and achieve the corresponding technical effects, the technical solution in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only embodiments of a part of the present disclosure, not all of the embodiments. The embodiments of the present disclosure and the various features in the embodiments can be combined with each other without conflict, and the technical solutions formed are all within the scope of protection of the present disclosure. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of the present disclosure.

[0029] It should be noted that the terms "first", "second", etc. in the specification and claims of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present disclosure described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products, or devices.

[0030] It should be noted that the steps shown in the flowcharts of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and that, although a logical order is shown in the flowcharts, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0031] Embodiment 1

[0032] Figure 1 The schematic diagram of the photoelectric detection circuit of a heating device provided by the embodiment of the present disclosure is shown in FIG. Figure 1 As shown, a photoelectric detection circuit of a heating device comprises:

[0033] A start control module, comprising a plurality of input terminals and an output terminal, for outputting corresponding drive signals according to a plurality of control signals received;

[0034] Here, the startup control module may include at least two input terminals and one output terminal, wherein the at least two input terminals are used to receive control signals, and the output terminal is used to output a driving signal corresponding to the control signal.

[0035] a photoelectric detection module connected to the output end of the start control module and used to start the working mode according to the driving signal output by the start control module to detect the positional relationship between the heating elements of the heating device;

[0036] Here, the positional relationship between the heating elements of the heating device may include: the angle between the heating elements in two adjacent heating components of the heating device.

[0037] Among them, each input end of the start-up control module respectively receives the switch control signal of the corresponding heating element in the heating device, so that when at least two heating elements in the heating device start working in response to their corresponding switch control signals, the start-up control module can output a driving signal to start the photoelectric detection module to detect the positional relationship between the working heating elements.

[0038] In this embodiment, after receiving a control signal through at least two input ends of the start control module, a drive signal corresponding to the control signal is output at the output end of the start control module. The photoelectric detection module is connected to the output end of the start control module and is used to start the working mode according to the drive signal output by the start control module to detect the positional relationship between the heating elements of the heating device. The positional relationship between the heating elements of the heating device may include: the angle between the heating elements in two adjacent heating components of the heating device.

[0039] The present disclosure provides a photoelectric detection circuit, method and heating device of a heating device, which includes a startup control module, which includes several input terminals and an output terminal, and is used to output corresponding drive signals according to several control signals received; a photoelectric detection module, which is connected to the output terminal of the startup control module, and is used to start the working mode according to the drive signal output by the startup control module to detect the positional relationship between the heating elements of the heating device. This can further promote the introduction and application of cost-reducing chips, thereby saving resources of chip I / O interfaces and reducing design costs.

[0040] On the other hand, the present invention starts the working mode according to the driving signal output by the starting control module through the photoelectric detection module to detect the positional relationship between the heating elements of the heating device when it is working. The positional relationship between the heating elements of the heating device will only be detected when the heating elements in two adjacent heating components of the heating device are turned on at the same time, which can greatly improve the service life of the switching device and at the same time improve the service life of the heating device.

[0041] Embodiment 2

[0042] On the basis of the above embodiment, the startup control module includes a plurality of startup control branches and a first resistor, wherein each of the startup control branches includes a startup transistor, a startup diode and a startup resistor, the base of the startup transistor serves as an input end of the startup control module, the collector of the startup transistor is connected to a power supply through the startup resistor, the emitter of the startup transistor is grounded, and the anode of the startup diode is connected to the collector of the startup transistor; the cathodes of the startup diodes in each of the startup control branches are connected to each other and then grounded through the first resistor; the startup control module outputs a voltage signal on the first resistor as the drive signal; wherein the resistance value of the first resistor is greater than the resistance value of the startup resistor.

[0043] It should be noted that the selection of the first resistor, the starting transistor, the starting diode and the starting resistor can be selected according to the actual implementation situation. For example, a suitable selection that can meet the actual requirements can be selected according to the required circuit function logic.

[0044] It is worth noting that the startup control module may include at least two startup control branches, and the number of the startup control branches may be determined according to actual implementation conditions.

[0045] In some embodiments, Figure 1 As shown, the circuit connection structure of the start control module 110 including two start control branches specifically includes:

[0046] The base of the first starting transistor Q2 serves as an input end of the starting control module 110 to receive the logic signal, the collector of the first starting transistor Q2 is connected to the power supply through the first starting resistor R8, the emitter of the first starting transistor Q2 is grounded, and the anode of the first starting diode D1 is connected to the collector of the first starting transistor Q2;

[0047] The base of the second starting transistor Q3 serves as an input end of the starting control module 110 to receive a logic signal, the collector of the second starting transistor Q3 is connected to the power supply through the second starting resistor R9, the emitter of the second starting transistor Q3 is grounded, and the anode of the second starting diode D2 is connected to the collector of the second starting transistor Q3; the cathode of the first starting diode D1 and the cathode of the second starting diode D2 are connected to each other and grounded through the first resistor R10, and the starting control module 110 outputs the voltage signal on the first resistor R10 as a driving signal.

[0048] The resistance of the first resistor R10 is greater than the resistance of the first starting resistor R8 and the resistance of the second starting resistor R9.

[0049] In this example, a plurality of control signals can be received by the start-up control module. When at least two heating elements in the heating device start working in response to their corresponding switch control signals, the start-up control module can output a drive signal corresponding to the plurality of the logic control signals, thereby causing the photoelectric detection module to start working in response to the drive signal, and further detect the positional relationship between the heating elements in the operation of the heating device.

[0050] Embodiment 3

[0051] Based on the above embodiment, the photoelectric detection module includes a second resistor, a switching transistor, a plurality of photoelectric detection branches and a voltage divider feedback unit, wherein the base of the switching transistor is connected to the output end of the startup control module through the second resistor, the emitter of the switching transistor is connected to the power supply, the collector of the switching transistor is connected to the input end of each of the photoelectric detection branches, the output end of each of the photoelectric detection branches is connected to the input end of the voltage divider feedback unit, and the photoelectric detection module outputs the voltage signal on the voltage divider resistor in the voltage divider feedback unit as the detection result.

[0052] It should be noted that the types of the second resistor and the switch transistor can be selected according to actual implementation conditions.

[0053] It is worth noting that the photoelectric detection module may include at least two photoelectric detection branches, and the number of the photoelectric detection branches may be determined according to specific actual implementation conditions.

[0054] In this embodiment, the photoelectric detection module can receive the driving signal outputted from the output terminal of the start control module, respond to the driving signal, and output the voltage signal on the voltage divider resistor in the voltage divider feedback unit as the detection result. In this way, the positional relationship between the heating elements in the operation of the heating device can be detected to prevent the heating elements of the heating device from overheating, thereby extending the service life of the heating device.

[0055] Embodiment 4

[0056] Based on the above embodiments, each of the photoelectric detection branches includes a photoelectric switch and two detection resistors. The anode of the photodiode and the collector of the detection transistor in the photoelectric switch are connected to each other and serve as the input end of the photoelectric detection branch. The cathode of the photodiode in the photoelectric switch is grounded through one of the detection resistors, and the emitter of the detection transistor in the photoelectric switch is connected to the input end of the voltage divider feedback unit through another detection resistor.

[0057] In some embodiments, Figure 1As shown, the circuit connection structure of the photoelectric detection module 120 including two photoelectric detection branches specifically includes:

[0058] The base of the switch transistor Q1 is connected to the output end of the start control module 110 through the second resistor R36 to receive the drive signal output by the start control module 110, the emitter of the switch transistor Q1 is connected to the power supply, the collector of the switch transistor Q1 is connected to the input end of the first photoelectric detection branch and the second photoelectric detection branch, the anode of the first photodiode in the first photoelectric switch U1 and the collector of the first detection transistor are connected to each other as the input end of the first photoelectric detection branch, the anode of the second photodiode in the second photoelectric switch U2 and the collector of the second detection transistor are connected to each other as the input end of the second photoelectric detection branch, the cathode of the first photodiode in the first photoelectric switch U1 is grounded through a first detection resistor R3, and the emitter of the first detection transistor in the first photoelectric switch U1 is connected to the input end of the voltage divider feedback unit through a second detection resistor R2;

[0059] The cathode of the second photodiode in the second photoelectric switch U2 is grounded through a third detection resistor R7, and the emitter of the first detection transistor in the second photoelectric switch U2 is connected to the input end of the voltage division feedback unit through a fourth detection resistor R5.

[0060] In this embodiment, the anode of the photodiode in the photoelectric switch of the photoelectric detection module and the collector of the detection transistor are used as the input end of the photoelectric detection control branch. According to the driving signal, the photoelectric detection module can be controlled to detect the positional relationship between the heating elements in the operation of the heating device. The connection structure is simple and easy to implement.

[0061] Embodiment 5

[0062] Based on the above embodiment, the voltage divider feedback unit includes a first voltage divider resistor, a second voltage divider resistor and a capacitor, wherein the first ends of the first voltage divider resistor and the second voltage divider resistor are connected to each other as the input end of the voltage divider feedback unit, the second end of the first voltage divider resistor is grounded, and the second end of the second voltage divider resistor serves as the output end of the voltage divider feedback unit and is grounded through the capacitor.

[0063] In this embodiment, it is worth noting that, in the case where the heating device is composed of two heating components with a total of four heating elements, each of the heating components includes two heating elements, the first heating component includes the first heating element and the third heating element, and the second heating component includes the second heating element and the fourth heating element;

[0064] like Figure 1As shown, by selecting appropriate resistance values ​​for the second detection resistor R2, the fourth detection resistor R5, and the first voltage-dividing resistor R6, the functional logic of the circuit can also realize different functions. For example, when the photoelectric detection module is working and only one heating component of the heating device is folded, only one photoelectric switch is turned on. At this time, the divided voltage on the second voltage-dividing resistor R4 is the divided voltage on the first voltage-dividing resistor R6 after the second detection resistor R2 is connected in series with the first voltage-dividing resistor R6, or the fourth detection resistor R5 is connected in series with the first voltage-dividing resistor R6. Assuming that this voltage is the first voltage U R6-1 ;

[0065] When the two heating components of the heating device are folded at the same time, the two photoelectric switches are turned on at the same time. At this time, the divided voltage on the second voltage-dividing resistor R4 is the divided voltage on the first voltage-dividing resistor R6 after the second detection resistor R2 is connected in parallel with the fourth detection resistor R5 and then connected in series with the first voltage-dividing resistor R6. Assume that this voltage is the second voltage U R6-2 Since the resistance of the second detection resistor R2 and the fourth detection resistor R5 in parallel is smaller than the single resistance of the second detection resistor R2 or the fourth detection resistor R5, the second voltage U R6-2 is greater than the first voltage U R6-1 ;

[0066] At this time, by adjusting the resistance values ​​of the second detection resistor R2, the fourth detection resistor R5, and the first voltage divider resistor R6, the second voltage U R6-2 The condition that the third control switch K3 is turned on is met, and the first voltage U R6-1 The condition for turning on the third control switch K3 is not met, that is, only when the two heating components of the heating device are detected to be folded, the third control switch K3 can be turned on, and the third heating element and the fourth heating element can be turned on to work, otherwise, the third control switch K3 is always in the off state, and the third heating element and the fourth heating element are not turned on to work. In this way, the over-temperature rise protection of the heating device can be turned on, and the service life of the heating device can be extended.

[0067] Embodiment 6

[0068] Based on the above embodiments, this embodiment provides an application example.

[0069] Figure 1 The schematic diagram of the photoelectric detection circuit of a heating device provided by the present disclosure is shown in FIG. Figure 1 As shown, the circuit connection structure of the photoelectric detection circuit of the heating device specifically includes:

[0070] The base of the first starting transistor Q2 serves as an input end of the starting control module 110 to receive the logic signal, the collector of the first starting transistor Q2 is connected to the power supply through the first starting resistor R8, the emitter of the first starting transistor Q2 is grounded, and the anode of the first starting diode D1 is connected to the collector of the first starting transistor Q2;

[0071] The base of the second starting transistor Q3 serves as an input end of the starting control module 110 to receive a logic signal, the collector of the second starting transistor Q3 is connected to the power supply through the second starting resistor R9, the emitter of the second starting transistor Q3 is grounded, and the anode of the second starting diode D2 is connected to the collector of the second starting transistor Q3; the cathode of the first starting diode D1 and the cathode of the second starting diode D2 are connected to each other and then grounded through the first resistor R10, and the starting control module 110 outputs the voltage signal on the first resistor R10 as a driving signal;

[0072] The base of the switch transistor Q1 is connected to the second end of the first resistor R10 through the second resistor R36. The second end of the first resistor R10 serves as the output end of the start control module 110 to receive the driving signal output by the start control module 110. The emitter of the switch transistor Q1 is connected to the power supply.

[0073] The collector of the switch transistor Q1 is connected to the input end of the first photoelectric detection branch and the second photoelectric detection branch, the anode of the first photodiode in the first photoelectric switch U1 and the collector of the first detection transistor are connected to each other and serve as the input end of the first photoelectric detection branch, the anode of the second photodiode in the second photoelectric switch U2 and the collector of the second detection transistor are connected to each other and serve as the input end of the second photoelectric detection branch, the cathode of the first photodiode in the first photoelectric switch U1 is grounded through a first detection resistor R3, the emitter of the first detection transistor in the first photoelectric switch U1 is connected to the first end of the second detection resistor R2, the cathode of the second photodiode in the second photoelectric switch U2 is grounded through a third detection resistor R7, the emitter of the first detection transistor in the second photoelectric switch U2 is connected to the first end of the fourth detection resistor R5, the second end of the second detection resistor R2 and the second end of the fourth detection resistor R5 are connected to each other, and then connected to the first end of the first voltage divider resistor R6 and the first end of the second voltage divider resistor R4;

[0074] The second end of the first voltage-dividing resistor R6 is grounded, the first end of the first voltage-dividing resistor R6 serves as the input end of the voltage-dividing feedback unit, the second end of the second voltage-dividing resistor R4 is grounded through the capacitor C1, and the photoelectric detection module 120 outputs the voltage signal on the second voltage-dividing resistor R4 as the detection result.

[0075] Embodiment 7

[0076] In this embodiment, a photoelectric detection method implemented by the photoelectric detection circuit of the heating device according to any one of the above-mentioned embodiments 1 to 5 is provided, comprising:

[0077] Step S1: Provide the switch control signal of the corresponding heating element in the heating device to the start control module of the photoelectric detection circuit, so that when at least two heating elements in the heating device start working in response to their corresponding switch control signals, the start control module outputs a drive signal to start the photoelectric detection module to detect the positional relationship between the working heating elements.

[0078] In this embodiment, by providing the switch control signal of the corresponding heating element in the heating device to the start control module of the photoelectric detection circuit, when at least two heating elements in the heating device start working in response to the corresponding switch control signal, the start control module outputs a drive signal to start the photoelectric detection module to detect the positional relationship between the working heating elements. This can further promote the introduction and application of cost-reducing chips, thereby saving chip I / O interface resources and reducing design costs.

[0079] On the other hand, the present invention starts the working mode according to the driving signal output by the starting control module through the photoelectric detection module to detect the positional relationship between the heating elements of the heating device when it is working. The positional relationship between the heating elements of the heating device will only be detected when the heating elements in two adjacent heating components of the heating device are turned on at the same time, which can greatly improve the service life of the switching device and at the same time improve the service life of the heating device.

[0080] Embodiment 8

[0081] Figure 2 This is a circuit diagram of a heating device provided by an embodiment of the present disclosure. Figure 2 As shown, a heating device includes: a plurality of heating elements and a photoelectric detection circuit as described in any one of the above embodiments 1 to 5.

[0082] The heating device also includes a controller, a signal output end of the controller is connected to a control switch for controlling the operation of the heating element and an input end of a start control module of the photoelectric detection circuit, so as to provide a switch control signal for starting the operation of the heating element, and a signal receiving end of the controller is connected to an output end of the photoelectric detection module of the photoelectric detection circuit, so as to receive a detection result output by the photoelectric detection module.

[0083] It should be noted that the heating device may be a skirting board heating device.

[0084] In this embodiment, the controller may be a single-chip microcomputer, and the specific model of the single-chip microcomputer may be selected according to actual implementation requirements.

[0085] In this embodiment, the controller can send a switch control signal to the control switch of the heating element and the input end of the start control module of the photoelectric detection circuit through its signal output end, so as to provide a switch control signal to start the heating element, and can receive the detection result output by the photoelectric detection module through the output end of the photoelectric detection module of the photoelectric detection circuit through the signal receiving end of the controller. This not only has good real-time performance, but also has high stability, strong anti-interference ability, low power consumption and low price.

[0086] It should be noted that the heating device is a device corresponding to the photoelectric detection circuit of the above-mentioned heating device. All implementation methods in the photoelectric detection circuit embodiment of the above-mentioned heating device are applicable to the embodiments of the heating device and can achieve the same technical effect.

[0087] Embodiment 9

[0088] On the basis of the above embodiment, the heating device also includes four heating elements, which are evenly distributed in two separable heating components; the first signal output end and the second signal output end of the controller are respectively connected to the first control switch and the second control switch, the first control switch and the second control switch are respectively connected to the heating elements of the two heating components, and are used to control the start-up of the heating elements of the two heating components, and at the same time, the first output end and the second signal output end of the controller are also connected to the input end of the start control module of the photoelectric detection circuit, so as to start the photoelectric detection circuit to detect the positional relationship between the two heating components; the output end of the photoelectric detection module of the photoelectric detection circuit is connected to the third control switch, and the third control switch is connected to some of the heating elements of the two heating components, and is used to control some of the heating elements in the two heating components to stop working when the position between the two heating components does not meet the preset conditions.

[0089] In some embodiments, Figure 2 As shown, the structure of the heating device specifically includes:

[0090] The first end of the first control switch K1 and the base of the first starting transistor Q2 are both connected to the first signal output end of the controller MCU, and are used to receive a switch control signal sent by the controller MCU. The second end of the first control switch K1 is connected to the base of the first starting transistor Q2 through the first heating element F1 and the third heating element F3 respectively. The collector of the first starting transistor Q2 is connected to the power supply through the first starting resistor R8. The emitter of the first starting transistor Q2 is grounded, and the anode of the first starting diode D1 is connected to the collector of the first starting transistor Q2.

[0091] The first end of the second control switch K2 and the base of the second start transistor Q3 are both connected to the second signal output end of the controller MCU, and are used to receive a switch control signal sent by the controller MCU. The second end of the second control switch K2 is connected to the base of the second start transistor Q3 through the third heating element F3 and the fourth heating element F4, respectively. The collector of the second start transistor Q3 is connected to the power supply through the second start resistor R9. The emitter of the second start transistor Q3 is grounded, and the anode of the second start diode D2 is connected to the collector of the second start transistor Q3.

[0092] The cathode of the first start-up diode D1 and the cathode of the second start-up diode D2 are connected to each other and then grounded through the first resistor R10, and the start-up control module 110 outputs the voltage signal on the first resistor R10 as the driving signal;

[0093] The base of the switching transistor Q1 is connected to the second end of the first resistor R10 through a second resistor R36, and the second end of the first resistor R10 serves as the output end of the startup control module 110 to receive the driving signal output by the startup control module 110. The emitter of the switching transistor Q1 is connected to the power supply, and the collector of the switching transistor Q1 is connected to the input ends of the first photoelectric detection branch and the second photoelectric detection branch. The anode of the first photodiode in the first photoelectric switch U1 and the collector of the first detection transistor are connected to each other and serve as the input end of the first photoelectric detection branch. The anode of the second photodiode in the second photoelectric switch U2 and the collector of the second detection transistor are connected to each other and serve as the input end of the second photoelectric detection branch. The cathode of the first photodiode in the first photoelectric switch U1 is connected to the first detection resistor through a first detection resistor. R3 is grounded, the emitter of the first detection transistor in the first photoelectric switch U1 is connected to the first end of the second detection resistor R2, the cathode of the second photodiode in the second photoelectric switch U2 is grounded through a third detection resistor R7, the emitter of the first detection transistor in the second photoelectric switch U2 is connected to the first end of the fourth detection resistor R5, the second end of the second detection resistor R2 and the second end of the fourth detection resistor R5 are connected to each other, and then connected to the first end of the first voltage-dividing resistor R6 and the second voltage-dividing resistor R4, the second end of the first voltage-dividing resistor R6 is grounded, the first end of the first voltage-dividing resistor R6 serves as the input end of the voltage-dividing feedback unit, the second end of the second voltage-dividing resistor R4 is grounded through the capacitor C1, and the photoelectric detection module 120 outputs the voltage signal on the second voltage-dividing resistor R4 as the detection result;

[0094] The signal receiving end of the controller MCU is respectively connected to the second end of the second voltage-dividing resistor R4 and the first end of the third control switch K3 to receive the detection result and control the working state of the third control switch K3 according to the detection result. The second end of the third control switch is respectively connected to the third heating element and the fourth heating element.

[0095] Furthermore, the working logic of the photoelectric detection circuit of the skirting heating device specifically includes:

[0096] The signal output end of the controller MCU outputs a switch control signal to the first end of the first control switch K1 and the first end of the second control switch K2, so that the first control switch K1 and the second control switch K2 are turned on in response to the switch control signal, and outputs a control signal from the second end of the first control switch K1 to the first start transistor Q2, so that the first start transistor Q2 is turned on, and outputs a drive signal from the second end of the second control switch K2 to the second start transistor Q3, so that the second start transistor Q3 is turned on;

[0097] When the first control switch K1 or the second control switch K2 is at a low level, that is, only one heating element in a heating component of the skirting heating device is heated, it can be considered that the heating power is low and there is no need to consider the overheating protection, so it is not necessary to detect whether the skirting heating device is in a closed state;

[0098] At this time, the first start-up transistor Q2 or the second start-up transistor Q3 will be turned off, and the 5V power supply flows into the ground through the first start-up resistor R8 or the second start-up resistor R9 through the first resistor R10. At this time, the level of the drive signal is the divided voltage on the first resistor R10. Here, the resistance value of the first resistor R10 can be selected to be greater than the resistance value of the first start-up resistor R8 or the second start-up resistor R9, which can ensure that the divided voltage of the first resistor R10 is close to 5V. At this time, the switch transistor Q1 cannot be turned on, and the photoelectric detection module 120 does not start working;

[0099] When the first control switch K1 and the second control switch K2 are both at high levels, the first start transistor Q2 and the second start transistor Q3 are turned on at the same time. At this time, the driving signal is a low level close to the ground, the switch transistor Q1 is saturated and turned on, and the photoelectric detection module 120 is turned on, that is, the first control switch K1 drives the first heating element, and the second control switch K2 drives the second heating element. The first heating element and the second heating element are turned on at the same time. At this time, the skirting board heating device is in a simultaneous heating mode of the first heating component and the second heating component. The photoelectric detection module 120 is required to detect the state of the first heating component and the second heating component being close together to ensure that when the skirting board heating device is folded, the temperature of the skirting board heating device will not be too high.

[0100] It should be noted that when the first heating component and the second heating component of the skirting heating device are in a non-closed state, that is, fully extended, the first photoelectric switch U1 and the second photoelectric switch U2 are turned off, and the voltage on the second voltage-dividing resistor R4 is pulled down to the zero potential of the ground. Since the voltage signal on the second voltage-dividing resistor R4 is the input drive signal of the third control switch K3, the third relay K3 is turned off at this time, so that the third heating element and the fourth heating element are turned off;

[0101] When the first heating component and the second heating component of the skirting board heating device are in a semi-expanded state, that is, one of the first heating component and the second heating component is expanded, the first photoelectric switch U1 and the second photoelectric switch U2 are turned on and off respectively, and the voltage on the second voltage-dividing resistor R4 becomes the voltage divided by the second detection resistor R2 and the first voltage-dividing resistor R6, or the voltage divided by the first voltage-dividing resistor R6 after the fourth detection resistor R5 and the first voltage-dividing resistor R6 are connected in series. By selecting the resistance values ​​of the second detection resistor R2, the fourth detection resistor R5 and the first voltage-dividing resistor R6, the high level of the voltage signal on the second voltage-dividing resistor R4 is reduced to the condition that the third control switch K3 is turned on. At this time, the third control switch K3 is turned on, and the third heating element and the fourth heating element start heating at the same time.

[0102] Embodiment 10

[0103] Based on the above embodiments, this embodiment provides an application example.

[0104] like Figure 3 As shown, an electrical load wiring diagram of a heating device is provided. When the heating device is a skirting heating device, the structure of the skirting heating device specifically includes:

[0105] The skirting heating device is composed of two adjacent heating components with a total of four heating elements, each heating component includes two heating elements, the first heating component includes a first heating element and a third heating element, and the second heating component includes a second heating element and a fourth heating element;

[0106] One end of the first heating element and the second heating element is directly connected to the input neutral line N, the other end of the first heating element is controlled by the first control switch K1 to connect to the live line AC-L, and the other end of the second heating element is controlled by the second control switch K2 to connect to the live line AC-L;

[0107] One end of the third heating element is controlled to be connected to the live wire AC-L through the first control switch K1, and the other end of the third heating element is controlled to be connected to the neutral wire N through the third control switch K3; one end of the fourth heating element is controlled to be connected to the live wire AC-L through the second control switch K2, and the other end of the fourth heating element is controlled to be connected to the neutral wire N through the third control switch K3.

[0108] When the skirting heating device starts the first heating component heating mode: the first control switch K1 is turned on, and the first heating element starts to work;

[0109] When the skirting heating device turns on the second heating component heating mode: the second control switch K2 is turned on, and the second heating element starts to work;

[0110] When the skirting heating device starts the simultaneous heating mode of the first heating component and the second heating component: the first control switch K1 and the second control switch K2 are turned on at the same time, and the first heating element and the second heating element are turned on and work at the same time;

[0111] It should be noted that, according to the positional relationship between the first heating element and the second heating element of the skirting heating device, the third control switch K3 is simultaneously controlled to be turned on or off through the start control module and the photoelectric detection module, that is, the third heating element and the fourth heating element are simultaneously turned on or off;

[0112] Specifically, if it is detected that the angle between the first heating element and the second heating element of the skirting board heating device is greater than or equal to a preset value, the third control switch K3 is controlled to be turned on, that is, the third heating element and the fourth heating element are turned on at the same time; if it is detected that the angle between the first heating element and the second heating element of the skirting board heating device is less than a preset value, the third control switch K3 is controlled to be turned off, that is, the third heating element and the fourth heating element are turned off at the same time.

[0113] On the one hand, this can further promote the introduction and application of cost-reduction chips, thereby saving resources of the chip I / O interface and reducing design costs. On the other hand, it can ensure that the temperature of the skirting board heating device will not rise too high, thereby extending the service life of the skirting board heating device.

[0114] Embodiment 11

[0115] Based on the above embodiments, this embodiment provides an application example.

[0116] like Figure 4 As shown, a working logic flow chart of two adjacent heating components of a heating device when heating simultaneously is provided. It should be noted that this embodiment is for the description of the case where the skirting heating device has two adjacent heating components, and each of the heating components has two heating elements. Specifically, the skirting heating device is composed of two adjacent heating components with a total of four heating elements, each of which includes two heating elements, the first heating component includes a first heating element and a third heating element, and the second heating component includes a second heating element and a fourth heating element; the specific working process includes:

[0117] Step 410: Turn on the first heating element and the second heating element to start a heating operation mode simultaneously;

[0118] Step 420: the controller controls the first control switch and the second control switch to be turned on at the same time, that is, the first heating element and the second heating element are turned on at the same time;

[0119] Step 430: the photoelectric detection module starts working to detect the close-together state of two adjacent heating components of the skirting heating device;

[0120] Step 440: determining whether two adjacent heating units are in a close-together state;

[0121] Step 450: If yes, the controller controls the third control switch to turn off, that is, the third heating element and the fourth heating element are turned off at the same time;

[0122] Step 460: Otherwise, the controller controls the third control switch to be turned on, that is, the third heating element and the fourth heating element are turned on at the same time.

[0123] It should be noted that the closed state refers to the position state between the heating elements of the skirting board heating device.

[0124] In this embodiment, the controller controls the first control switch and the second control switch to be turned on at the same time, so that when the second heating element and the second heating element are turned on at the same time, the photoelectric detection module starts working, thereby detecting the close state of the two adjacent heating components of the skirting heating device. If it is determined that the two adjacent heating components of the skirting heating device are in a close state, the controller controls the third control switch to be turned off, that is, the third heating element and the fourth heating element are turned off at the same time, so as to ensure that the temperature rise of the skirting heating device will not be too high. If it is determined that the two adjacent heating components of the skirting heating device are not in a close state, that is, the skirting heating device is in a semi-expanded state, that is, one heating component is unfolded and the other heating component is folded, or the two heating components are in a fully expanded state, the controller controls the third control switch to be turned on, that is, the third heating element and the fourth heating element are turned on at the same time, so that the skirting heating device operates at the maximum heating power. In this way, it can be ensured that the temperature rise of the skirting heating device will not be too high, thereby extending the service life of the skirting heating device.

[0125] Embodiment 12

[0126] On the basis of the above embodiments, this embodiment provides a computer device, including a memory, a processor, and a computer program stored in the memory, wherein the processor executes the computer program to implement the steps of the method described in the above embodiments.

[0127] In some implementations of this embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps of the method described in the above embodiment are implemented.

[0128] In some implementations of this embodiment, a computer program product is provided, including a computer program / instructions, and when the computer program is executed by a processor, the steps of the method described in the above embodiment are implemented.

[0129] The processor may include, but is not limited to, one or more processors or microprocessors, etc. Each processor may be an application specific integrated circuit (ASIC), a digital signal processor (DSP), a digital signal processing device (DSPD), a programmable logic device (PLD), a field programmable gate array (FPGA), a controller, a microcontroller, a microprocessor or other electronic components to execute the methods in the above embodiments.

[0130] Computer-readable storage media can be implemented by any type of volatile or non-volatile storage device or a combination thereof. Computer-readable storage media may include, but are not limited to, for example, random access memory (RAM), read-only memory (ROM), flash memory, EPROM memory, EEPROM memory, registers, computer storage media (such as hard disks, floppy disks, solid-state drives, removable disks, Blu-ray disks, etc.).

[0131] The computer-readable storage medium may also store at least one computer executable program / instruction, which may be, for example, a computer-readable instruction. The computer-readable storage medium includes, but is not limited to, for example, a volatile memory and / or a non-volatile memory. The volatile memory may include, for example, a random access memory (RAM) and / or a cache memory (cache), etc. The computer-readable storage medium may include, for example, a read-only memory (ROM), a hard disk, a flash memory, etc. For example, a non-transitory computer-readable storage medium may be connected to a computing device such as a computer, and then, when the computing device runs the computer-readable instructions stored on the computer-readable storage medium, the various methods described above may be performed.

[0132] In addition, the computer device may also include (but not limited to) a data bus, an input / output (I / O) bus, a display, and input / output devices (eg, keyboard, mouse, speaker, etc.), etc.

[0133] The processor may communicate with external devices via an I / O bus via a wired or wireless network.

[0134] In one embodiment, the at least one computer executable instruction may also be compiled into or constitute a software product / computer program product, wherein one or more computer executable instructions are executed by a processor to perform the various functions and / or method steps in the embodiments described in the present technology.

[0135] In the embodiments provided in the present disclosure, it should be understood that the disclosed devices and methods can also be implemented in other ways. The device embodiments described above are merely schematic. For example, the flowcharts and block diagrams in the accompanying drawings show the possible architecture, functions and operations of the devices, methods and computer program products according to multiple embodiments of the present disclosure. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of a code, and the above-mentioned module, program segment or a part of the code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flowchart, and the combination of boxes in the block diagram and / or flowchart can be implemented with a dedicated hardware-based system that performs a specified function or action, or can be implemented with a combination of dedicated hardware and computer instructions.

[0136] It should be noted that in the present disclosure, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element limited by the sentence "includes a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0137] Although the embodiments disclosed in the present disclosure are as above, the above contents are only embodiments adopted for facilitating the understanding of the present disclosure and are not intended to limit the present disclosure. Any technician in the technical field to which the present disclosure belongs can make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed in the present disclosure, but the scope of patent protection of the present disclosure shall still be subject to the scope defined in the attached claims.

Claims

1. A photoelectric detection circuit for a heating device, characterized in that: include: A start control module, comprising a plurality of input terminals and an output terminal, for outputting corresponding drive signals according to a plurality of control signals received; a photoelectric detection module connected to the output end of the start control module and used to start the working mode according to the driving signal output by the start control module to detect the positional relationship between the heating elements of the heating device; Among them, each input end of the start-up control module respectively receives the switch control signal of the corresponding heating element in the heating device, so that when at least two heating elements in the heating device start working in response to their corresponding switch control signals, the start-up control module can output a driving signal to start the photoelectric detection module to detect the positional relationship between the working heating elements.

2. The photoelectric detection circuit of the heating device according to claim 1, characterized in that: The startup control module includes a plurality of startup control branches and a first resistor, wherein each of the startup control branches includes a startup transistor, a startup diode and a startup resistor, the base of the startup transistor serves as an input end of the startup control module, the collector of the startup transistor is connected to a power supply through the startup resistor, the emitter of the startup transistor is grounded, and the anode of the startup diode is connected to the collector of the startup transistor; the cathodes of the startup diodes in each of the startup control branches are connected to each other and then grounded through the first resistor; the startup control module outputs a voltage signal on the first resistor as the drive signal; wherein the resistance value of the first resistor is greater than the resistance value of the startup resistor.

3. The photoelectric detection circuit of the heating device according to claim 1, characterized in that: The photoelectric detection module includes a second resistor, a switching transistor, a plurality of photoelectric detection branches and a voltage divider feedback unit, wherein the base of the switching transistor is connected to the output end of the startup control module through the second resistor, the emitter of the switching transistor is connected to a power supply, the collector of the switching transistor is connected to the input end of each of the photoelectric detection branches, the output end of each of the photoelectric detection branches is connected to the input end of the voltage divider feedback unit, and the photoelectric detection module outputs a voltage signal on the voltage divider resistor in the voltage divider feedback unit as a detection result.

4. The photoelectric detection circuit of the heating device according to claim 3, characterized in that: Each of the photoelectric detection branches includes a photoelectric switch and two detection resistors. The anode of the photodiode and the collector of the detection transistor in the photoelectric switch are connected to each other and serve as the input end of the photoelectric detection branch. The cathode of the photodiode in the photoelectric switch is grounded through one of the detection resistors, and the emitter of the detection transistor in the photoelectric switch is connected to the input end of the voltage divider feedback unit through another detection resistor.

5. The photoelectric detection circuit of the heating device according to claim 3, characterized in that: The voltage-dividing feedback unit includes a first voltage-dividing resistor, a second voltage-dividing resistor and a capacitor, wherein the first ends of the first voltage-dividing resistor and the second voltage-dividing resistor are connected to each other as the input end of the voltage-dividing feedback unit, the second end of the first voltage-dividing resistor is grounded, and the second end of the second voltage-dividing resistor serves as the output end of the voltage-dividing feedback unit and is grounded through the capacitor.

6. A photoelectric detection method implemented based on the photoelectric detection circuit of the heating device according to any one of claims 1 to 5, characterized in that: The following steps are involved: The switch control signal of the corresponding heating element in the heating device is provided to the start control module of the photoelectric detection circuit, so that when at least two heating elements in the heating device start working in response to their corresponding switch control signals, the start control module outputs a drive signal to start the photoelectric detection module to detect the positional relationship between the working heating elements.

7. A heating device, characterized in that: The device comprises a plurality of heating elements and a photoelectric detection circuit as claimed in any one of claims 1 to 5.

8. The heating device according to claim 7, characterized in that It also includes a controller, a signal output end of the controller is connected to a control switch for controlling the operation of the heating element and an input end of a start control module of the photoelectric detection circuit, so as to provide a switch control signal for starting the operation of the heating element, and a signal receiving end of the controller is connected to an output end of the photoelectric detection module of the photoelectric detection circuit, so as to receive a detection result output by the photoelectric detection module.

9. The heating device according to claim 8, characterized in that The controller comprises first and second heating components which can be placed separately, and each heating component is provided with a plurality of heating elements; the first and second signal output terminals of the controller are respectively connected to the first and second control switches, and the first and second control switches are respectively connected to the heating elements of the first and second heating components, so as to control the heating elements of the first and second heating components to start working; and the first and second signal output terminals of the controller are also connected to the input terminals of the start control module of the photoelectric detection circuit, so as to start the photoelectric detection circuit to detect the positional relationship between the first and second heating components; The output end of the photoelectric detection module of the photoelectric detection circuit is connected to a third control switch, and the third control switch is connected to some heating elements of the first and second heating components. When the positional relationship between the first and second heating components does not meet a preset condition, the third control switch operates according to the detection result output by the photoelectric detection module to control some heating elements in the first and second components to stop working.

10. The heating device according to claim 9, characterized in that The heating device is a skirting heating device, and the preset condition includes that the angle between the first and second heating components is smaller than a preset angle threshold.

Images