Temperature detection circuit, temperature detection method, device, equipment and storage medium

Abstract

The application discloses a temperature detection circuit, a temperature detection method, a device, equipment and a storage medium, and relates to the technical field of electronic circuits. The circuit comprises temperature sensors corresponding to light emitting elements, a communication bus and a processing module. For any temperature sensor, the temperature sensor is arranged on one side of the corresponding light emitting element and has a unique address. The communication pin of the temperature sensor is connected with the first communication pin of the processing module through the communication bus, and the power pin of the temperature sensor is connected with the power supply pin of the processing module, so as to detect the temperature of the corresponding light emitting element. The second communication pin of the processing module is connected with the driving module of the light emitting element. For any temperature sensor, the processing module is used for sending a temperature detection instruction to the temperature sensor according to the address of the temperature sensor, receiving an actual temperature detected by the temperature sensor based on the temperature detection instruction, and generating a control instruction according to the actual temperature and the address of the temperature sensor.

Description

Technical Field

[0001] This application relates to the field of electronic circuit technology, and more specifically, to a temperature detection circuit, a temperature detection method, a temperature detection device, an electronic device, and a computer-readable storage medium. Background Technology

[0002] Currently, the design of optical engines such as DLP, MicroLED, LCOS, and LBS generally requires high brightness, low power consumption, and low operating temperature. The LED lamp is a crucial component in the optical engine that is strongly correlated with these specifications.

[0003] When LED lights are turned on, they typically generate heat, which is reflected in the LED's temperature. If the heat generated by the LED is too high, i.e., the LED temperature is too high, it may damage components located near the LED, especially the collimator. Additionally, the LED's temperature can also serve as a physical quantity reflecting the LED's drive current.

[0004] Therefore, how to detect the temperature of LED lights has become an urgent technical problem to be solved. Summary of the Invention

[0005] One objective of this application is to provide a new technical solution for temperature detection.

[0006] According to a first aspect of this application, a temperature detection circuit is provided, comprising: a temperature sensor corresponding to a light-emitting element, a communication bus, and a processing module, wherein:

[0007] For any of the temperature sensors, the temperature sensor is located on one side of the corresponding light-emitting element and has a unique address. The communication pin of the temperature sensor is connected to the first communication pin of the processing module through the communication bus, and the power supply pin of the temperature sensor is connected to the power supply pin of the processing module, for detecting the temperature of the corresponding light-emitting element.

[0008] The second communication pin of the processing module is connected to the driving module of the light-emitting element. For any of the temperature sensors, it is used to send a temperature detection command to the temperature sensor according to the address of the temperature sensor, receive the actual temperature detected by the temperature sensor based on the temperature detection command, and generate a control command according to the actual temperature and the address of the temperature sensor.

[0009] Optionally, the temperature detection circuit further includes at least one electrical interface;

[0010] Each of the aforementioned electrical interfaces includes multiple sets of pins;

[0011] For any set of pins, including: a first pin, a second pin, a third pin, and a fourth pin, the first pin is connected to the second pin, and the third pin is connected to the fourth pin;

[0012] The communication pin of the temperature sensor is connected to the first pin via the communication bus, the first communication pin of the processing module is connected to the second pin via the communication bus, the power supply pin of the temperature sensor is connected to the third pin, and the power supply pin of the processing module is connected to the fourth pin.

[0013] Optionally, the temperature detection circuit further includes a first filter corresponding to each of the temperature sensors;

[0014] For any of the first filters, the first filter is connected between the power supply pin of the corresponding temperature sensor and the ground pin of the corresponding temperature sensor.

[0015] Optionally, the temperature detection circuit further includes a second filter;

[0016] The second filter is connected to the power supply pin and the ground pin of the processing module.

[0017] Optionally, generating control commands based on the actual temperature and the address of the temperature sensor includes:

[0018] Based on the address of the temperature sensor, the driving current value of the light-emitting element corresponding to the temperature sensor and the temperature-electric mapping relationship are obtained from the driving module.

[0019] Based on the driving current value and the thermoelectric mapping relationship, the standard temperature of the light-emitting element corresponding to the temperature sensor is determined;

[0020] When the actual temperature is greater than the standard temperature and the temperature difference between the two temperatures is greater than a preset threshold, a control command is generated based on the address of the temperature sensor to instruct the driving module to control the corresponding light-emitting element of the temperature sensor to turn off.

[0021] Optionally, the temperature detection circuit further includes a prompting module;

[0022] The prompting module is connected to the third communication pin of the processing module;

[0023] The step of generating control commands based on the actual temperature and the address of the temperature sensor includes:

[0024] Based on the address of the temperature sensor, the driving current value of the light-emitting element corresponding to the temperature sensor and the temperature-electric mapping relationship are obtained from the driving module.

[0025] Based on the driving current value and the thermoelectric mapping relationship, the standard temperature of the light-emitting element corresponding to the temperature sensor is determined;

[0026] When the actual temperature is greater than the standard temperature and the temperature difference between the two temperatures is greater than a preset threshold, a control command is generated to instruct the prompting module to output a prompt message indicating that there are bubbles in the welding of the light-emitting element corresponding to the temperature sensor.

[0027] According to a second aspect of this application, a temperature detection method is provided, applied to a temperature detection circuit as described in any one aspect of the first aspect, the method comprising:

[0028] For any temperature sensor, a temperature detection command is sent to the temperature sensor according to the address of the temperature sensor;

[0029] Receive the actual temperature detected by the temperature sensor based on the temperature detection command;

[0030] Control commands are generated based on the actual temperature and the address of the temperature sensor.

[0031] Optionally, generating control commands based on the actual temperature and the address of the temperature sensor includes:

[0032] Based on the address of the temperature sensor, the driving current value of the light-emitting element corresponding to the temperature sensor and the temperature-electric mapping relationship are obtained from the driving module.

[0033] Based on the driving current value and the thermoelectric mapping relationship, the standard temperature of the light-emitting element corresponding to the temperature sensor is determined;

[0034] When the actual temperature is greater than the standard temperature and the temperature difference between the two temperatures is greater than a preset threshold, a control command is generated based on the address of the temperature sensor to instruct the driving module to control the corresponding light-emitting element of the temperature sensor to turn off.

[0035] Optionally, generating control commands based on the actual temperature and the address of the temperature sensor includes:

[0036] Based on the address of the temperature sensor, the driving current value of the light-emitting element corresponding to the temperature sensor and the temperature-electric mapping relationship are obtained from the driving module.

[0037] Based on the driving current value and the thermoelectric mapping relationship, the standard temperature of the light-emitting element corresponding to the temperature sensor is determined;

[0038] When the actual temperature is greater than the standard temperature and the temperature difference between the two temperatures is greater than a preset threshold, the indicator module outputs a control command indicating that there are bubbles in the welding of the light-emitting element corresponding to the temperature sensor.

[0039] According to a third aspect of this application, a temperature detection device is provided, applied to a temperature detection circuit as described in any one of the first aspects, comprising:

[0040] The transmitting module is used to send a temperature detection command to any temperature sensor based on the temperature sensor.

[0041] The receiving module is used to receive the actual temperature detected by the temperature sensor based on the temperature detection command;

[0042] The generation module is used to generate control commands based on the actual temperature and the address of the temperature sensor.

[0043] According to a fourth aspect of this application, an electronic device is provided, characterized in that it includes a temperature detection circuit as described in any one of the first aspects;

[0044] Alternatively, it may include a temperature detection device as described in any one of the third aspects;

[0045] Alternatively, it may include a memory and a processor, the memory being used to store computer instructions, and the processor being used to retrieve the computer instructions from the memory to perform the temperature detection method as described in any of the second aspects.

[0046] According to a fifth aspect of this application, a computer-readable storage medium is provided having a computer program stored thereon, which, when executed by a processor, implements the temperature detection method according to any one of the second aspects.

[0047] This application provides a temperature detection circuit, including: a temperature sensor corresponding to a light-emitting element, a communication bus, and a processing module. For each temperature sensor, the sensor is located on one side of the corresponding light-emitting element and has a unique address. The communication pin of the temperature sensor is connected to the first communication pin of the processing module via the communication bus, and the power supply pin of the temperature sensor is connected to the power supply pin of the processing module, used to detect the temperature of the corresponding light-emitting element. The second communication pin of the processing module is connected to the driving module of the light-emitting element. For any temperature sensor, it is used to send a temperature detection command to the temperature sensor according to the address of the temperature sensor, receive the actual temperature detected by the temperature sensor based on the temperature detection command, and generate a control command based on the actual temperature and the address of the temperature sensor. The temperature detection circuit provided by this application can, on the one hand, detect the temperature of the light-emitting element. In the case of an LED light-emitting element, it can detect the temperature of the LED light. On the other hand, compared to drawing pins from the processing module to connect to the temperature sensor, it can greatly reduce the number of lines between the processing module and the temperature sensor. Furthermore, it can realize control based on the actual temperature of the light-emitting element, allowing the user to know whether the light-emitting element is qualified.

[0048] Other features and advantages of this application will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0049] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present application and, together with their description, serve to explain the principles of the present application.

[0050] Figure 1 This is a temperature detection circuit provided according to an embodiment of the present application. Figure 1 ;

[0051] Figure 2 This is a temperature detection circuit provided according to an embodiment of the present application. Figure 2 ;

[0052] Figure 3 This is a schematic diagram of the layout structure of a first filter according to an embodiment of this application;

[0053] Figure 4 This is a schematic diagram of the layout structure of a second filter according to an embodiment of this application;

[0054] Figure 5 This is a schematic flowchart of a temperature detection method provided according to an embodiment of this application;

[0055] Figure 6This is a schematic diagram of a temperature detection device according to an embodiment of this application;

[0056] Figure 7 This is a schematic diagram of the structure of an electronic device provided according to an embodiment of this application. Detailed Implementation

[0057] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present application.

[0058] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the scope of this application and its application or use.

[0059] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0060] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0061] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0062] like Figure 1 As shown, this application embodiment provides a temperature detection circuit 100, which includes a temperature sensor 101 corresponding to a light-emitting element, a communication bus 103, and a processing module 102, wherein:

[0063] For any temperature sensor 101, the temperature sensor 101 is located on one side of the corresponding light-emitting element 201 and has a unique address. The communication pin of the temperature sensor 101 is connected to the first communication pin of the processing module 102 through the communication bus 103. The power supply pin of the temperature sensor 101 is connected to the power supply pin of the processing module 102, and is used to detect the temperature of the corresponding light-emitting element 20.

[0064] The second communication pin of the processing module 102 is connected to the driving module 202 of the light-emitting element 201. For any temperature sensor 101, it is used to send a temperature detection command to the temperature sensor 101, receive the actual temperature detected by the temperature sensor 101 based on the temperature detection command, and generate a control command based on the actual temperature and the address of the temperature sensor 101.

[0065] In this embodiment, the driving module 202 and each light-emitting element 201 constitute a light-emitting circuit 200. The driving module 202 provides a driving current to each light-emitting element 201 to drive it to emit light. The light-emitting element 201 generates heat when emitting light. Furthermore, if the light-emitting element 201 is a three-channel light-emitting element, it can be any one of R-LED, G-LED, and B-LED. Alternatively, as... Figure 2 As shown, the light-emitting element 201 can also be either R / B-LED 201-2 or G-LED 201-3. R / B-LED 201 refers to R-LED and G-LED integrated together.

[0066] The temperature sensor 101 is disposed on one side of the corresponding light-emitting element 201, and the distance between the two should be as small as possible without affecting the operation of the corresponding light-emitting element 201. In one embodiment of this application, the distance between the temperature sensor 101 and the light-emitting element 201 is less than or equal to 0.2 mm.

[0067] It should be noted that the bottom of the light-emitting element 201 is usually connected to a heat-dissipating copper plate, and most of the heat from the light-emitting element 201 is dissipated through the heat-dissipating copper plate. Therefore, the temperature sensor 101 should ideally be positioned as close as possible to the heat-dissipating copper plate corresponding to the light-emitting element 201. This ensures that the temperature detected by the temperature sensor 101 more accurately reflects the temperature of the corresponding light-emitting element 201.

[0068] In this embodiment of the application, the power supply pin of the processing module 102 is connected to the power supply pin of any temperature sensor 101 to provide driving power to the temperature sensor 101, so that the temperature sensor 101 enters the working state to detect the temperature of the corresponding light-emitting element.

[0069] Furthermore, the first communication pin of the processing module 102 is connected to the communication pin of the temperature sensor 101 via the communication bus 103. This allows data exchange between the processing module 102 and the temperature sensor 101. With the processing module 102 and the temperature sensor 101 connected via the communication bus 103, one processing module 102, acting as a master, can simultaneously connect to multiple temperature sensors 101, acting as slaves. Based on this, such as... Figure 1 As shown in Figure 2, for all temperature sensors 101, the processing module 102 only needs to bring out the first communication pin from the processing module 102. Compared to bringing out pins from the processing module 102 to connect to the temperature sensors 101 separately, this can greatly reduce the number of lines between the processing module 102 and the temperature sensors 101.

[0070] In order for the processing module 102 to distinguish different temperature sensors 101, a unique address is set for each temperature sensor 101 so that the processing module 102 can locate the temperature sensor 101.

[0071] In one example, the processing module 102 can be a SOC.

[0072] In one example, the communication bus 103 can be an I2C bus. Figures 1 to 3 The diagram uses communication bus 103 as an I2C bus. The I2C bus includes SDA and SCL lines. Based on this, the first communication pin of processing module 102 includes an SDA pin and an SCL pin. Correspondingly, the communication pins of the temperature sensor also include SDA and SCL pins.

[0073] Of course, the communication bus 103 can also be other forms of communication bus. This application does not limit the specific form of the communication bus 103.

[0074] In this embodiment of the application, for any temperature sensor 101, the processing module 102 is used to execute the following S1-S3:

[0075] S1. Send a temperature detection command to the temperature sensor based on the address of the temperature sensor.

[0076] Taking the communication bus 102 as an I2C bus as an example, the specific implementation of S1 above can be as follows: First, the temperature sensor 101 is addressed according to its address. If the temperature sensor 101 determines that its address matches the address used by the processing module 102 during addressing, it sends an ACK response signal to the processing module 102. Based on this, the processing module 102 sends a temperature detection command to the temperature sensor 101 corresponding to that address, instructing the temperature sensor 101 to report the temperature it has detected.

[0077] S2, Receive the actual temperature detected by temperature sensor 101 based on temperature detection command.

[0078] By combining S1-S2 above, the temperature of the light-emitting element 201 can be detected. When the light-emitting element is an LED lamp, the temperature of the LED lamp can also be detected.

[0079] S3. Generate control commands based on the actual temperature and the address of temperature sensor 101.

[0080] In one embodiment of this application, the above-mentioned S3 can be implemented in the following two ways.

[0081] In the first method, the above S3 is implemented through the following S31-S33:

[0082] S31. Based on the address of the temperature sensor, obtain the driving current value of the light-emitting element 201 corresponding to the temperature sensor 101 and the temperature-electric mapping relationship from the driving module 202.

[0083] In this embodiment, the driving module 202 provides driving current to the light-emitting element 201 according to the driving current value indicated by the light-emitting circuit 200. Based on this, the driving module 202 obtains the driving current value of each light-emitting element 201. Furthermore, the driving module 202 or the processing module 102 pre-stores the address of the temperature sensor 101 corresponding to each light-emitting element and its own temperature-electricity mapping relationship.

[0084] In this embodiment, for a qualified light-emitting element 201, when the driving current value is constant, the brightness of the light-emitting element 201 is fixed, that is, there is a first mapping relationship between the driving current value and the brightness. When the brightness of the light-emitting element 201 is fixed, the temperature of the light-emitting element 201 is fixed, that is, there is a second mapping relationship between brightness and temperature. Based on the first and second mapping relationships, a thermoelectric mapping relationship reflecting the driving current value and temperature can be obtained. It is understood that the first and second mapping relationships can be obtained by the developers of the light-emitting element 201 through multiple experiments.

[0085] In this context, "qualified" means that the light-emitting element 201 is manufactured in compliance with regulations and that there are no air bubbles when it is soldered to the support (such as PCB or FPC) of the light-emitting element 201.

[0086] In one embodiment of this application, the specific implementation of S31 above can be as follows: the processing module 102 sends an acquisition request to the driving module 202 according to the address of the temperature sensor 101, so as to obtain the driving current value and temperature-electric mapping relationship of the light-emitting element 201 corresponding to the temperature sensor 101 at that address. The driving module 202 responds to the request, thereby sending the corresponding driving current value, or driving current value and temperature-electric mapping relationship, to the processing module 101.

[0087] S32. Determine the standard temperature of the light-emitting element 201 corresponding to the temperature sensor based on the driving current value and the temperature-electric mapping relationship.

[0088] In this embodiment, the temperature obtained by substituting the driving current value into the thermoelectric mapping relationship is denoted as the standard temperature of the light-emitting element corresponding to the temperature sensor.

[0089] S33. When the actual temperature is greater than the standard temperature and the temperature difference between the actual temperature and the standard temperature is greater than a preset threshold, a control command is generated according to the address of the temperature sensor 101 to control the corresponding light-emitting element of the temperature sensor to turn off by the instruction drive module 202.

[0090] In this embodiment, the preset threshold is the maximum temperature drift allowed for a qualified light-emitting element 201. If the actual temperature exceeds the standard temperature, and the temperature difference from the standard temperature exceeds the preset threshold, the light-emitting element is considered unqualified. In this case, a control command can be generated instructing the drive module 202 to turn off the light-emitting element 201. Furthermore, the control command can be sent to the drive module 202. Upon receiving the control command, the control module 202 controls the light-emitting element 201 to turn off. This serves as a reminder to the user that the light-emitting element 201 is unqualified.

[0091] It should be noted that in this embodiment, when the actual temperature is higher than the standard temperature, it indicates that the light-emitting element 201 can emit light normally, meaning that the light-emitting element 201 is manufactured in compliance with regulations. The reason why the actual temperature is higher than the standard temperature is that there are air bubbles at the weld between the light-emitting element 201 and the support. This is because the air bubbles cause poor heat dissipation of the light-emitting element 201, which in turn leads to the actual temperature of the light-emitting element 201 being higher than the standard temperature.

[0092] Corresponding to S33 above, if the temperature difference between the actual temperature and the standard temperature is less than or equal to a preset threshold, then the light-emitting element 201 is considered qualified. In this case, no control is performed on the driving module 202.

[0093] In the second method, the temperature detection circuit 100 also includes a prompting module, which is connected to the third communication pin of the processing module 102. Based on this, the above-mentioned S3 is implemented through the following S34-S36:

[0094] S34. Based on the address of the temperature sensor 101, obtain the driving current value of the light-emitting element 201 corresponding to the temperature sensor 10 and the temperature-electric mapping relationship from the driving module 202.

[0095] S35. Determine the standard temperature of the light-emitting element 201 corresponding to the temperature sensor 101 based on the driving current value and the thermoelectric mapping relationship.

[0096] It should be noted that the specific implementations of S34 and S31, and S35 and S32 are the same, and will not be repeated here.

[0097] S36. When the actual temperature is greater than the standard temperature and the temperature difference between the two temperatures is greater than a preset threshold, the indicator module outputs a control command indicating that there are bubbles in the welding of the light-emitting element 201 corresponding to the temperature sensor 101.

[0098] It should be noted that the preset threshold in S36 above, and the explanation of the presence of air bubbles in the welding of the light-emitting element corresponding to the temperature sensor 101, are specifically referred to in the explanation of S33 above.

[0099] In this embodiment, after generating a control command to indicate that there are bubbles in the welding of the light-emitting element 201 corresponding to the temperature sensor 101, the processing module 102 can send the control command to the indication module. Upon receiving the control command, the indication module outputs the indication message indicating that there are bubbles in the welding of the light-emitting element 201 corresponding to the temperature sensor 101.

[0100] In one embodiment of this application, the prompting module can be a display screen, a speaker, etc. Based on this, the prompting information can be text-based or voice-based.

[0101] In this embodiment, an additional prompting module is provided to alert the temperature sensor 101 to the presence of air bubbles in the corresponding light-emitting element 201 during welding. This avoids interference between the temperature detection circuit 100 and the light-emitting circuit 200 provided in this embodiment.

[0102] Based on the above S31-S36, control can be achieved according to the actual temperature of the light-emitting element 201, so that the user can know whether the light-emitting element 201 is qualified.

[0103] In one embodiment of this application, the temperature detection circuit 100 provided in this application embodiment can be implemented using a PCB board or an FPC. When implemented using an FPC, the temperature detection circuit 100 provided in this application embodiment is easy to bend.

[0104] This application provides a temperature detection circuit, including: a temperature sensor corresponding to a light-emitting element, a communication bus, and a processing module. For each temperature sensor, the sensor is located on one side of the corresponding light-emitting element and has a unique address. The communication pin of the temperature sensor is connected to the first communication pin of the processing module via the communication bus, and the power supply pin of the temperature sensor is connected to the power supply pin of the processing module, used to detect the temperature of the corresponding light-emitting element. The second communication pin of the processing module is connected to the driving module of the light-emitting element. For any temperature sensor, it is used to send a temperature detection command to the temperature sensor according to the address of the temperature sensor, receive the actual temperature detected by the temperature sensor based on the temperature detection command, and generate a control command based on the actual temperature and the address of the temperature sensor. The temperature detection circuit provided by this application can, on the one hand, detect the temperature of the light-emitting element. In the case of an LED light-emitting element, it can detect the temperature of the LED light. On the other hand, compared to drawing pins from the processing module to connect to the temperature sensor, it can greatly reduce the number of lines between the processing module and the temperature sensor. Furthermore, it can realize control based on the actual temperature of the light-emitting element, allowing the user to know whether the light-emitting element is qualified.

[0105] In one embodiment of this application, such as Figure 2 As shown, the detection circuit 100 provided in this application embodiment also includes at least one electrical interface 104, and each electrical interface 104 includes multiple sets of pins;

[0106] For any set of pins, including: first pin 1041, second pin 1042, third pin 1043 and fourth pin 1044, first pin 1041 is connected to second pin 1042, and third pin 1043 is connected to fourth pin 1044.

[0107] The communication pin of the temperature sensor 101 is connected to the first pin 1041 via the communication bus 103. The first communication pin of the processing module 102 is connected to the second pin 1042 via the communication bus 103. The power supply pin of the temperature sensor 101 is connected to the third pin 1043. The power supply pin of the processing module 102 is connected to the fourth pin 1044.

[0108] In this embodiment, the processing module 102 is specifically connected to any temperature sensor 101 via an electrical interface 104. Thus, if the processing module 102 fails, only the processing module 102 in the temperature detection circuit 100 needs to be replaced, without replacing the temperature sensor 101. Similarly, if the temperature sensor 101 fails, only the temperature sensor 101 needs to be replaced, without replacing the processing module 102. This reduces the hardware cost of the temperature detection circuit 100 provided in this embodiment.

[0109] In one embodiment of this application, such as Figure 3 As shown, the temperature detection circuit 100 provided in this embodiment further includes a first filter 105 corresponding to a temperature sensor, wherein:

[0110] For any one of the first filters 105, the first filter 105 is connected between the power supply pin of the corresponding temperature sensor 101 and the ground pin of the corresponding temperature sensor 101.

[0111] In one embodiment of this application, the first filter 105 may be a 1μF capacitor. Figure 3 The example shown uses a capacitor as the first filter 105.

[0112] In this embodiment of the application, a first filter 105 is connected to the power supply terminal of the temperature sensor 101. The first filter 105 can filter out high-frequency noise pulses brought by front-end devices (such as electrical interface 104, processing module 102), thereby reducing the interference of noise on the temperature sensor 101 and improving the accuracy of the actual temperature detected by the temperature sensor 101.

[0113] In one embodiment of this application, such as Figure 5 As shown, the temperature detection circuit 100 improved in this embodiment further includes a second filter 106, wherein:

[0114] The second filter 106 is connected to the power supply pin and the ground pin of the processing module 102.

[0115] In one embodiment of this application, the second filter 106 may be a 1μF capacitor. Figure 4 The example shown uses a capacitor as the second filter 106.

[0116] In this embodiment, the second filter 106 is positioned differently from the first filter 105 in the previous embodiment. In this embodiment, by placing the second filter 106 on one side of the processing module 102, high-frequency noise pulses can be filtered out from all temperature sensors 101 using this single second filter 106. This significantly reduces the number of second filters 106, thereby reducing the hardware cost of the temperature detection circuit 100 provided in this embodiment.

[0117] This application also provides a temperature detection method, which is applied to a temperature detection circuit 100 as shown in any of the above embodiments. Figure 5 As shown, the method includes the following steps S510-S530:

[0118] S510. For any temperature sensor, send a temperature detection command to the temperature sensor according to the address of the temperature sensor.

[0119] S520: Receive the actual temperature detected by the temperature sensor based on the temperature detection command;

[0120] S530. Generate control commands based on the actual temperature and the address of the temperature sensor.

[0121] The temperature detection method provided in this application provides several advantages. Firstly, it enables the detection of the temperature of a light-emitting element. In the case of an LED light-emitting element, it also enables the detection of the LED's temperature. Secondly, compared to routing separate pins from the processing module to connect to the temperature sensor, it significantly reduces the number of lines between the processing module and the temperature sensor. Thirdly, it allows for control based on the actual temperature of the light-emitting element, enabling users to determine whether the light-emitting element is qualified.

[0122] In one embodiment of this application, the above-mentioned S530 can be implemented through the following steps:

[0123] S5301. Based on the address of the temperature sensor, obtain the driving current value of the light-emitting element corresponding to the temperature sensor and the temperature-electric mapping relationship from the driving module.

[0124] S5302. Determine the standard temperature of the light-emitting element corresponding to the temperature sensor based on the driving current value and the thermoelectric mapping relationship.

[0125] S5303, when the actual temperature is greater than the standard temperature and the temperature difference between the two temperatures is greater than a preset threshold, a control command is generated based on the address of the temperature sensor to control the corresponding light-emitting element of the temperature sensor to turn off.

[0126] In one embodiment of this application, the above-mentioned S530 can be further implemented by the following steps:

[0127] S5304. Based on the address of the temperature sensor, obtain the driving current value of the light-emitting element corresponding to the temperature sensor and the temperature-electric mapping relationship from the driving module.

[0128] S5305. Determine the standard temperature of the light-emitting element corresponding to the temperature sensor based on the driving current value and the thermoelectric mapping relationship.

[0129] S5306. When the actual temperature is greater than the standard temperature and the temperature difference between the two temperatures is greater than a preset threshold, the indicator module outputs a control command indicating that there are bubbles in the welding of the light-emitting element corresponding to the temperature sensor.

[0130] This application also provides a temperature detection device 600, which is applied to a temperature detection circuit 100 as shown in any of the above embodiments. Figure 6 As shown, the temperature detection device 600 includes:

[0131] The transmitting module 610 is used to send a temperature detection command to any temperature sensor according to the temperature sensor.

[0132] The receiving module 620 is used to receive the actual temperature detected by the temperature sensor based on the temperature detection command;

[0133] The generation module 630 is used to generate control commands based on the actual temperature and the address of the temperature sensor.

[0134] The temperature detection device provided in this application embodiment can, on the one hand, detect the temperature of the light-emitting element. When the light-emitting element is an LED, it can also detect the temperature of the LED. On the other hand, compared to having separate pins for connecting the temperature sensor from the processing module, the number of lines between the processing module and the temperature sensor can be greatly reduced. Furthermore, it allows for control based on the actual temperature of the light-emitting element, enabling the user to determine whether the light-emitting element is qualified.

[0135] In one embodiment of this application, the generation module 630 is specifically used for:

[0136] Based on the address of the temperature sensor, the driving current value of the light-emitting element corresponding to the temperature sensor and the temperature-electric mapping relationship are obtained from the driving module.

[0137] Based on the driving current value and the thermoelectric mapping relationship, the standard temperature of the light-emitting element corresponding to the temperature sensor is determined;

[0138] When the actual temperature is greater than the standard temperature and the temperature difference between the two temperatures is greater than a preset threshold, a control command is generated based on the address of the temperature sensor to control the corresponding light-emitting element of the temperature sensor to turn off.

[0139] In one embodiment of this application, the generation module 630 is specifically used for:

[0140] Based on the address of the temperature sensor, the driving current value of the light-emitting element corresponding to the temperature sensor and the temperature-electric mapping relationship are obtained from the driving module.

[0141] Based on the driving current value and the thermoelectric mapping relationship, the standard temperature of the light-emitting element corresponding to the temperature sensor is determined;

[0142] When the actual temperature is greater than the standard temperature and the temperature difference between the two temperatures is greater than a preset threshold, the indicator module outputs a control command indicating that there are bubbles in the welding of the light-emitting element corresponding to the temperature sensor.

[0143] This application also provides an electronic device 700, which includes the temperature detection circuit provided in any of the circuit embodiments described above.

[0144] Alternatively, the electronic device 700 may include the temperature detection device 600 provided in any of the above-described device embodiments.

[0145] Or see Figure 7 As shown, the electronic device 700 includes a memory 710 and a processor 720. The memory 710 is used to store computer instructions, and the processor 720 is used to call the computer instructions from the memory 710 to execute the temperature detection method as described in any of the above method embodiments.

[0146] This application also provides a computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the temperature detection method according to any one of the above method embodiments.

[0147] This application may be a system, method, and / or computer program product. A computer program product may include a computer-readable storage medium having computer-readable program instructions loaded thereon for causing a processor to implement various aspects of this application.

[0148] Computer-readable storage media can be tangible devices capable of holding and storing instructions for use by an instruction execution device. Computer-readable storage media can be, for example—but not limited to—electrical storage devices, magnetic storage devices, optical storage devices, electromagnetic storage devices, semiconductor storage devices, or any suitable combination thereof. More specific examples (a non-exhaustive list) of computer-readable storage media include: portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), static random access memory (SRAM), portable compact disc read-only memory (CD-ROM), digital multifunction disc (DVD), memory sticks, floppy disks, mechanical encoding devices, such as punch cards or recessed protrusions storing instructions thereon, and any suitable combination thereof. The computer-readable storage media used herein are not to be construed as transient signals themselves, such as radio waves or other freely propagating electromagnetic waves, electromagnetic waves propagating through waveguides or other transmission media (e.g., light pulses through fiber optic cables), or electrical signals transmitted through wires.

[0149] The computer-readable program instructions described herein can be downloaded from computer-readable storage media to various computing / processing devices, or downloaded via a network, such as the Internet, local area network, wide area network, and / or wireless network, to an external computer or external storage device. The network may include copper transmission cables, fiber optic transmission, wireless transmission, routers, firewalls, switches, gateway computers, and / or edge servers. A network adapter card or network interface in each computing / processing device receives the computer-readable program instructions from the network and forwards them to the computer-readable storage media in the respective computing / processing device.

[0150] The computer program instructions used to perform the operations of this application may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, state setting data, or source code or object code written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Smalltalk, C++, etc., and conventional procedural programming languages ​​such as the "C" language or similar programming languages. The computer-readable program instructions may be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving a remote computer, the remote computer may be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or may be connected to an external computer (e.g., via the Internet using an Internet service provider). In some embodiments, electronic circuits, such as programmable logic circuits, field-programmable gate arrays (FPGAs), or programmable logic arrays (PLAs), are personalized by utilizing state information from the computer-readable program instructions. These electronic circuits can execute the computer-readable program instructions to implement various aspects of this application.

[0151] Various aspects of this application are described herein with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It should be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer-readable program instructions.

[0152] These computer-readable program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing apparatus to produce a machine such that, when executed by the processor of the computer or other programmable data processing apparatus, they create means for implementing the functions / actions specified in one or more blocks of the flowchart and / or block diagram. These computer-readable program instructions can also be stored in a computer-readable storage medium that causes a computer, programmable data processing apparatus, and / or other device to operate in a particular manner; thus, the computer-readable medium storing the instructions comprises an article of manufacture that includes instructions for implementing aspects of the functions / actions specified in one or more blocks of the flowchart and / or block diagram.

[0153] Computer-readable program instructions may also be loaded onto a computer, other programmable data processing apparatus, or other device to cause a series of operational steps to be performed on the computer, other programmable data processing apparatus, or other device to produce a computer-implemented process, thereby causing the instructions executed on the computer, other programmable data processing apparatus, or other device to perform the functions / actions specified in one or more boxes of a flowchart and / or block diagram.

[0154] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of an instruction containing one or more executable instructions for implementing a specified logical function. In some alternative implementations, the functions marked in the blocks may occur in a different order than those marked in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions. It is well known to those skilled in the art that implementation can be done in hardware, software, or by software...

[0155] The methods of implementation, whether combined with hardware, are all equivalent.

[0156] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical applications, or technical improvements to the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein. The scope of this application is defined by the appended claims.

Claims

1. A temperature detection circuit, characterized in that, include: Temperature sensors, communication buses, and processing modules, each corresponding to a light-emitting element, are included: For any of the temperature sensors, the temperature sensor is located on one side of the corresponding light-emitting element and has a unique address. The communication pin of the temperature sensor is connected to the first communication pin of the processing module through the communication bus, and the power supply pin of the temperature sensor is connected to the power supply pin of the processing module, for detecting the temperature of the corresponding light-emitting element. The second communication pin of the processing module is connected to the driving module of the light-emitting element. For any of the temperature sensors, it is used to send a temperature detection command to the temperature sensor according to the address of the temperature sensor, receive the actual temperature detected by the temperature sensor based on the temperature detection command, and generate a control command according to the actual temperature and the address of the temperature sensor. The temperature detection circuit also includes a notification module; The prompting module is connected to the third communication pin of the processing module; The step of generating control commands based on the actual temperature and the address of the temperature sensor includes: Based on the address of the temperature sensor, the driving current value of the light-emitting element corresponding to the temperature sensor and the temperature-electric mapping relationship are obtained from the driving module. Based on the driving current value and the thermoelectric mapping relationship, the standard temperature of the light-emitting element corresponding to the temperature sensor is determined; When the actual temperature is greater than the standard temperature and the temperature difference between the two temperatures is greater than a preset threshold, a control command is generated to instruct the prompting module to output a prompt message indicating that there are bubbles in the welding of the light-emitting element corresponding to the temperature sensor.

2. The circuit according to claim 1, characterized in that, The temperature detection circuit also includes at least one electrical interface; Each of the aforementioned electrical interfaces includes multiple sets of pins; For any set of pins, including: a first pin, a second pin, a third pin, and a fourth pin, the first pin is connected to the second pin, and the third pin is connected to the fourth pin; The communication pin of the temperature sensor is connected to the first pin via the communication bus, the first communication pin of the processing module is connected to the second pin via the communication bus, the power supply pin of the temperature sensor is connected to the third pin, and the power supply pin of the processing module is connected to the fourth pin.

3. The circuit according to claim 1, characterized in that, The temperature detection circuit also includes a first filter that corresponds to each of the temperature sensors; For any of the first filters, the first filter is connected between the power supply pin of the corresponding temperature sensor and the ground pin of the corresponding temperature sensor.

4. The circuit according to claim 1, characterized in that, The temperature detection circuit also includes a second filter; The second filter is connected to the power supply pin and the ground pin of the processing module.

5. The circuit according to claim 1, characterized in that, The step of generating control commands based on the actual temperature and the address of the temperature sensor includes: Based on the address of the temperature sensor, the driving current value of the light-emitting element corresponding to the temperature sensor and the temperature-electric mapping relationship are obtained from the driving module. Based on the driving current value and the thermoelectric mapping relationship, the standard temperature of the light-emitting element corresponding to the temperature sensor is determined; When the actual temperature is greater than the standard temperature and the temperature difference between the two temperatures is greater than a preset threshold, a control command is generated based on the address of the temperature sensor to instruct the driving module to control the corresponding light-emitting element of the temperature sensor to turn off.

6. A temperature detection method, characterized in that, Applied to a temperature detection circuit as described in any one of claims 1-5, the method comprises: For any temperature sensor, a temperature detection command is sent to the temperature sensor according to the address of the temperature sensor; Receive the actual temperature detected by the temperature sensor based on the temperature detection command; Control commands are generated based on the actual temperature and the address of the temperature sensor; The step of generating control commands based on the actual temperature and the address of the temperature sensor includes: Based on the address of the temperature sensor, the driving current value of the light-emitting element corresponding to the temperature sensor and the temperature-electric mapping relationship are obtained from the driving module. Based on the driving current value and the thermoelectric mapping relationship, the standard temperature of the light-emitting element corresponding to the temperature sensor is determined; When the actual temperature is greater than the standard temperature and the temperature difference between the two temperatures is greater than a preset threshold, the indicator module outputs a control command indicating that there are bubbles in the welding of the light-emitting element corresponding to the temperature sensor.

7. The method according to claim 6, characterized in that, The step of generating control commands based on the actual temperature and the address of the temperature sensor includes: Based on the address of the temperature sensor, the driving current value of the light-emitting element corresponding to the temperature sensor and the temperature-electric mapping relationship are obtained from the driving module. Based on the driving current value and the thermoelectric mapping relationship, the standard temperature of the light-emitting element corresponding to the temperature sensor is determined; When the actual temperature is greater than the standard temperature and the temperature difference between the two temperatures is greater than a preset threshold, a control command is generated based on the address of the temperature sensor to control the corresponding light-emitting element of the temperature sensor to turn off.

8. A temperature detection device, characterized in that, Applied to the temperature detection circuit as described in any one of claims 1-5, comprising: The transmitting module is used to send a temperature detection command to any temperature sensor based on the temperature sensor. The receiving module is used to receive the actual temperature detected by the temperature sensor based on the temperature detection command; The generation module is used to generate control commands based on the actual temperature and the address of the temperature sensor.

9. An electronic device, characterized in that, Includes the temperature detection circuit as described in any one of claims 1-5; Alternatively, it may include the temperature detection device as described in claim 8; Alternatively, it may include a memory and a processor, the memory for storing computer instructions and the processor for retrieving the computer instructions from the memory to perform the temperature detection method as described in any one of claims 6-7.

10. A computer-readable storage medium, characterized in that, It stores a computer program, which, when executed by a processor, implements the temperature detection method according to any one of claims 1-7.

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