A dual-wavelength smoke sensing calibration method and system
By using dynamic self-calibration of the red light emitting tube and current calibration of the blue light tube, combined with the weighted activation of the blue light tube by the red light tube, the problems of high power consumption and high cost of dual-wavelength smoke detectors are solved, achieving consistent calibration of equipment performance and reduced power consumption.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- WUHAN TURBO TECH
- Filing Date
- 2023-07-11
- Publication Date
- 2026-07-28
AI Technical Summary
Existing dual-wavelength smoke detectors suffer from high power consumption and high cost, making it difficult to improve yield without increasing cost and power consumption.
By using dynamic self-calibration based on the red light emitting tube, the emission current of the blue light tube is calibrated, and the power consumption of the device is reduced by using the red light tube to weight the blue light tube.
Without increasing additional costs and power consumption, the device achieved performance consistency calibration, improved yield, and significantly reduced power consumption.
Smart Images
Figure CN117197992B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of smoke alarm technology, and more specifically, to a dual-wavelength smoke detector calibration method and system. Background Technology
[0002] In order to increase the anti-interference capability of photoelectric smoke detectors and reduce false alarms, existing technologies have evolved from single red wavelength photoelectric smoke detectors to red and blue dual wavelength smoke detectors. The anti-interference capability of the equipment has been significantly increased and false alarms have been significantly reduced. However, this has also led to increased power consumption and the inability of a single photoelectric receiver to simultaneously meet the photoelectric conversion range of red and blue emission.
[0003] Traditional solutions involve increasing procurement costs to ensure a manageable yield rate, while other solutions aim for a low yield rate. However, both of these solutions suffer from high equipment power consumption and high costs.
[0004] Therefore, there is an urgent need for a dual-wavelength smoke detection calibration method to solve the above problems. Summary of the Invention
[0005] This invention provides a dual-wavelength smoke detector calibration method and system that overcomes or at least partially solves the above-mentioned problems. According to a first aspect of this invention, a dual-wavelength smoke detector calibration method is provided, comprising:
[0006] Based on the red light emitting tube, the phototube is dynamically self-calibrated;
[0007] If the dynamic self-calibration is successful, the emission current of the blue LED tube is calibrated using the calibration value;
[0008] Once the emission currents of both the red and blue photodiodes are calibrated, the red photodiode is used to weight the blue photodiode to reduce the power consumption of the device.
[0009] The dynamic self-calibration of the phototube based on the red light emitting tube includes:
[0010]
[0011] m is the smoke concentration, m = 0 or M, I ∈ (I min ,I max V min <f(m,I)<V max vi,V m <V g ∈(V min V max ).
[0012] The dynamic self-calibration process includes:
[0013] When m takes the value 0, the obtained value f(0, I) is less than V. m Greater than 0;
[0014] m takes the value M, and the obtained value is f(M, I). If f(M, I) is not equal to V... g Then increase I until f(M, I) equals V. g ;
[0015] When all of the above conditions are met, self-calibration is completed.
[0016] If the dynamic self-calibration is successful, the emission current of the blue LED is calibrated using the calibration value, including:
[0017]
[0018] TH = f(m, I) b ) / f(m,I)
[0019] TH represents the calibration value, V b i is the photoelectric conversion value of the photodetector when the blue phototube emits light; I b ∈(I bmin I bmax ), I bmin I bmax It is the intensity value of the light emitted by the blue phototube, and a unique I is selected. b Then the blue light current calibration is complete.
[0020] The method of using red light tubes to weighted activate blue light tubes to reduce device power consumption includes:
[0021] When the emitted value of the red phototube exceeds the preset threshold, the blue phototube is turned on. The threshold is f(x, I)*R, where R∈(0,1). R is an empirical value set according to the on-site environment, and f(x, I) is the value of the photoelectric receiver tube collected when the red phototube emits light during a fire alarm.
[0022] The dual-wavelength smoke detector calibration method provided in this invention can complete consistency calibration and improve yield rate through software without increasing any additional cost or power consumption, and significantly reduce equipment power consumption. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of a dual-wavelength smoke detector calibration method provided in an embodiment of the present invention;
[0024] Figure 2 This is a schematic diagram of the method execution flow provided in the embodiments of the present invention;
[0025] Figure 3 This is a schematic diagram of a dual-wavelength smoke detector calibration system provided in an embodiment of the present invention;
[0026] Figure 4 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present invention. Detailed Implementation
[0027] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.
[0028] Figure 1 This is a schematic diagram of a dual-wavelength smoke detector calibration method provided in an embodiment of the present invention, as shown below. Figure 1 As shown, it includes:
[0029] 101. Dynamic self-calibration of phototube based on red light emitting tube;
[0030] 102. If the dynamic self-calibration is successful, calibrate the emission current of the blue LED using the calibration value;
[0031] 103. After the emission currents of the red and blue photodiodes are calibrated, the red photodiode is used to weight the blue photodiode to reduce the power consumption of the device.
[0032] Figure 2 This is a schematic diagram of the method execution flow provided in the embodiments of the present invention, combined with... Figure 1 and Figure 2 As shown, the present invention actually requires dynamic self-calibration of the red phototube and current calibration of the blue phototube. On the basis that both calibrations are successful at the same time, the blue phototube is turned on in a weighted manner to form a low power consumption state for the device to operate.
[0033] Specifically, calibrating the emission current of the blue LED using calibration values includes:
[0034]
[0035] m is the smoke concentration, m = 0 or M, I ∈ (I min ,I max V min <f(m,I)<V max vi,V m <V g ∈(V min V max ).
[0036] Assume the red phototube emits a current of I in a smoke-free environment. m When the voltage collected by the receiving tube is Vm, and the smoke chamber is in an environment with a smoke concentration of M, the transmitting current I is used. n The voltage collected by the transmitting and receiving tubes is V. g Among them, In It can be adjusted in increments of i. n =I m +i*n(I n <=I max ), I max I is the maximum current that the device can emit. min The minimum current required to power the infrared LED of the device.
[0037] Under the above conditions, the formula provided in this application can be used for dynamic self-calibration.
[0038] Based on the above embodiments, the dynamic self-calibration process includes:
[0039] When m takes the value 0, the obtained value f(0, I) is less than V. m Greater than 0;
[0040] m takes the value M, and the obtained value is f(M, I). If f(M, I) is not equal to V... g Then increase I until f(M, I) equals V. g ;
[0041] When all of the above conditions are met, self-calibration is completed.
[0042] Specifically, two conditions must be met simultaneously for self-calibration to be considered complete: when m is 0, record I∈I. n The obtained value f(0, I) should be less than V. m And it is greater than 0, which is condition 1;
[0043] When m takes the value M, record the value f(M, I) obtained by I ∈ In. If the value of f(M, I) is not V at this time... g Increasing I makes the photoelectric conversion value f(M, I) equal to V. g This is condition 2.
[0044] Re-execute condition 1 to ensure that the value of f(M, I) satisfies both conditions 1 and 2 before the self-calibration of the red phototube is considered complete.
[0045] Based on the above embodiments, if the dynamic self-calibration is successful, the smoke detection threshold is calibrated based on the dynamic self-calibration result, including:
[0046]
[0047] TH = f(m, I) b ) / f(m,I)
[0048] TH represents the calibration value, V b i is the photoelectric conversion value of the photodetector when the blue phototube emits light; Ib ∈(I bmin I bmax ), I bmin I bmax It is the intensity value of the light emitted by the blue phototube, and a unique I is selected. b The threshold calibration is then complete.
[0049] After the red light calibration is completed, the blue light current needs to be calibrated. TH is the calibration value, which is related to the structure of the smoke chamber and the selection of the photoelectric pair tube, and is a constant value. V b i represents the photoelectric conversion value of the photodetector when the blue phototube emits light.
[0050] Based on the above embodiments, the method of reducing device power consumption by using red light tubes to weighted activate blue light tubes includes:
[0051] When the emitted value of the red phototube exceeds the preset threshold, the blue phototube is turned on. The threshold is f(x, I)*R, where R∈(0,1). R is an empirical value set according to the on-site environment, and f(x, I) is the value of the photoelectric receiver tube collected when the red phototube emits light during a fire alarm.
[0052] Because blue light requires a higher activation voltage, the power consumption of a dual-wavelength smoke detector is equivalent to that of two single-wavelength devices. This invention utilizes the value collected by the photodetector when the red phototube emits light to set a range; the blue light tube is only activated when the value reaches the specified range, which can effectively reduce the power consumption of the device.
[0053] The specific approach is to assume the value is f(x, I), and turn on the blue light when the threshold exceeds f(x, I)*R, where R∈(0,1). The value of R is an empirical value set according to the on-site environment, and f(x, I) is the value of the photoelectric receiver tube collected when the red light photoelectric tube emits light when a fire alarm occurs.
[0054] The method provided in this invention can effectively reduce power consumption without affecting performance. R is called the weighted value for turning on the blue phototube, so this invention can also be called a weighted turn-on method.
[0055] Figure 3 This is a schematic diagram of a dual-wavelength smoke detection calibration system provided in an embodiment of the present invention, as shown below. Figure 3 As shown, it includes: a dynamic self-calibration module 301, a threshold calibration module 302, and a weighted enabling module 303, wherein:
[0056] The dynamic self-calibration module 301 is used to perform dynamic self-calibration of the phototube based on the red light emitting tube.
[0057] The threshold calibration module 302 is used to calibrate the emission current of the blue light tube using the calibration value if the dynamic self-calibration is successful.
[0058] The weighted activation module 303 is used to reduce the power consumption of the device by weighting the activation of the blue light tube with the red light tube after the emission current of the red and blue light tubes has been calibrated.
[0059] For details on how to use the dynamic self-calibration module 301, threshold calibration module 302, and weighted activation module 303 to calibrate dual-wavelength smoke detectors, please refer to [reference needed]. Figure 1 The embodiments shown are not repeated here.
[0060] Figure 4 An example is a schematic diagram of the structure of an electronic device, such as... Figure 4 As shown, the server may include a processor 410, a communication interface 420, a memory 430, and a bus 440. The processor 410, communication interface 420, and memory 430 communicate with each other via the bus 440. The communication interface 440 can be used for information transmission between the server and the smart TV. The processor 410 can call logic instructions in the memory 430 to execute the following methods: dynamically self-calibrating the phototube based on the red light emitting tube; if the dynamic self-calibration is successful, calibrating the emission current of the blue light tube using the calibration value; after the emission currents of both the red and blue phototubes are calibrated, reducing the device's operating power consumption by using a weighted activation method of the red light tube to turn on the blue light tube.
[0061] This embodiment also provides a computer program product, which includes a computer program stored on a non-transitory computer-readable storage medium. The computer program includes program instructions, and when the program instructions are executed by the computer, the computer can execute the methods provided in the above-described method embodiments, such as: performing dynamic self-calibration of the phototube based on the red light emitting tube; if the dynamic self-calibration is successful, calibrating the emission current of the blue light tube using the calibration value; and after the emission currents of both the red and blue phototubes are calibrated, reducing the device's operating power consumption by using a red light tube to weighted turn on the blue light tube.
[0062] This embodiment provides a non-transitory computer-readable storage medium storing computer instructions that cause the computer to execute the methods provided in the above-described method embodiments, such as: dynamically self-calibrating the phototube based on the red light emitting tube; if the dynamic self-calibration is successful, calibrating the emission current of the blue light tube using the calibration value; and reducing the device's operating power consumption by using a red light tube to weighted turn on the blue light tube after both the red and blue phototube emission currents have been calibrated.
[0063] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.
[0064] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.
[0065] Finally, the method described in this application is merely a preferred embodiment and is not intended to limit the scope of protection of this invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.
Claims
1. A dual-wavelength smoke detector calibration method, characterized in that, include: Based on the red light emitting tube, the phototube is dynamically self-calibrated; If the dynamic self-calibration is successful, the emission current of the blue LED tube is calibrated using the calibration value; After the emission currents of both red and blue photodiodes are calibrated, the power consumption of the device is reduced by using a weighted activation method of the red photodiode to activate the blue photodiode; the dynamic self-calibration of the photodiode based on the red photodiode includes: m is the smoke concentration, m = 0 or M, Iϵ(I min ,I max V min <f(m,I)<V max vi,V m <V g ϵ(V min V max The red phototube emits a current of I in a smoke-free environment. m The voltage collected by the receiving tube is V m The smoke concentration is M, and the emission current is I. n The voltage collected by the receiving tube is V g I max I is the maximum current emitted by the device. min The minimum current emitted by the red light tube of the device, f(M,I) is the dynamic self-calibration function, N is the number of phototubes calibrated, and V is the minimum current emitted by the red light tube. min V is the calibrated minimum voltage value. max The maximum calibrated voltage value; the method of using red LEDs to weightedly activate blue LEDs to reduce device power consumption includes: When the emitted value of the red phototube exceeds the preset threshold, the blue phototube is turned on. The threshold is f(x, I)*R, where R ∈ (0, 1). R is an empirical value set according to the on-site environment, and f(x, I) is the value of the photoelectric receiver tube collected when the red phototube emits light during a fire alarm.
2. The dual-wavelength smoke detection calibration method according to claim 1, characterized in that, The dynamic self-calibration process includes: When m takes the value 0, the obtained value f(0, I) is less than V. m Greater than 0; m takes the value M, and the obtained value is f(M, I). If f(M, I) is not equal to V... g Then increase I until f(M, I) equals V. g ; When all of the above conditions are met, self-calibration is completed.
3. The dual-wavelength smoke detection calibration method according to claim 1, characterized in that, The calibration of the blue LED's emission current using calibration values includes: TH = f(m,I b ) / f(m,I) TH represents the calibration value, V b i is the photoelectric conversion value of the photodetector when the blue phototube emits light; I b ϵ(I bmin I bmax ), I bmin I bmax It is the intensity value of the light emitted by the blue phototube, and a unique I is selected. b Then the blue light current calibration is complete.
4. A dual-wavelength smoke detection calibration system, characterized in that, include: The dynamic self-calibration module is used to perform dynamic self-calibration of the phototube based on the red light emitting tube; The blue light calibration module is used to calibrate the emission current of the blue light tube using the calibration value if the dynamic self-calibration is successful. The weighted activation module, after the emission currents of both red and blue photodiodes are calibrated, uses the red photodiode to weighted activate the blue photodiode to reduce device power consumption; the dynamic self-calibration of the photodiode based on the red photodiode includes: m is the smoke concentration, m = 0 or M, Iϵ(I min ,I max V min <f(m,I)<V max vi,V m <V g ϵ(V min V max The red phototube emits a current of I in a smoke-free environment. m The voltage collected by the receiving tube is V m The smoke concentration is M, and the emission current is I. n The voltage collected by the receiving tube is V g I max I is the maximum current emitted by the device. min The minimum current emitted by the red light tube of the device, f(M,I) is the dynamic self-calibration function, N is the number of phototubes calibrated, and V is the minimum current emitted by the red light tube. min V is the calibrated minimum voltage value. max The maximum calibrated voltage value; the method of using red LEDs to weightedly activate blue LEDs to reduce device power consumption includes: When the emitted value of the red phototube exceeds the preset threshold, the blue phototube is turned on. The threshold is f(x, I)*R, where R ∈ (0, 1). R is an empirical value set according to the on-site environment, and f(x, I) is the value of the photoelectric receiver tube collected when the red phototube emits light during a fire alarm.
5. A computer device, characterized in that, The computer device includes a processor, a memory, and a computer program stored in the memory and executable by the processor, wherein the computer program, when executed by the processor, performs the steps as described in any one of claims 1 to 3.
6. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program, wherein when the computer program is executed by a processor, it implements the steps of the method as described in any one of claims 1 to 3.