TWI848620B - Processing method for sensing signals and detection system - Google Patents

Abstract

A processing method for sensing signals is adapted for solving the conventional problems for obtaining inaccurate signals or no signal from single sensing unit. The processing method comprising the following steps: using multiple sensing units, having the same specification, to detect an interested object and generate corresponding multiple sensing signals; and providing a processing unit to receive the multiple sensing signals and calculate a relative error relationship, and forming the relative error relationship as an output information to be outputted and/or stored. The relative error relationship comprises a mean relative error value and/or a mean error level. The mean relative error value is calculated by the differences among each sensing signals. The mean error level is defined by the extent of the mean relative error value.

Description

Detection signal processing method and detection system

The present invention relates to a signal processing method, in particular to a detection signal processing method and a detection system.

In various industries and technical fields, the use of detection units to detect/obtain signals of targets of interest (which can be converted into corresponding data or information) has been widely used, and the processing method of the learned detection signal only uses a single detection unit for the same target of interest in the same location/field. However, when the single detection unit fails or malfunctions, the system or user can only rely on the inaccurate data or information obtained by the only detection unit for subsequent response, resulting in deviated or erroneous judgments, decisions or behaviors, increasing the risk of system errors or collapse, which may simply affect the accuracy of information or even cause loss of life or property. In addition, when the single detection unit fails or malfunctions, the corresponding warning signal cannot be obtained, causing subsequent operations to be suspended.

In view of this, the known detection signal processing methods and detection systems still need to be improved.

In order to solve the above problems, the purpose of the present invention is to provide a detection signal processing method that can determine the reliability of the current or acquired signal.

The second purpose of the present invention is to provide a detection signal processing method that can still perform signal detection when a detection unit fails or malfunctions.

Another object of the present invention is to provide a detection system that can determine the reliability of a current or acquired signal.

Another object of the present invention is to provide a detection system that can still perform signal detection when a detection unit fails or malfunctions.

The directions or similar terms described in the present invention, such as "front", "rear", "left", "right", "upper", "lower", "inner", "outer", "side", etc., are mainly for reference to the directions of the attached drawings. Each direction or similar terms are only used to assist in the description and understanding of the various embodiments of the present invention, and are not used to limit the present invention.

The use of the quantifiers "one" or "a" in the components and parts described in the present invention is only for the convenience of use and to provide the general meaning of the scope of the present invention. In the present invention, it should be interpreted as including one or at least one, that is, including plural cases, unless it clearly means otherwise. Among them, the quantifiers described after the term "only" in the present invention are specifically used to limit the quantity of the corresponding feature to only the scope defined by the described quantifier.

The term "coupling" used throughout this invention includes direct or indirect electrical and/or signal connections, which can be selected by those with ordinary knowledge in the field according to usage requirements.

The "system", "device" and "unit" described in the present invention may each include at least one "processor", which refers to various data processing devices with specific functions and implemented by hardware or hardware and software to process and analyze information and/or generate corresponding control information, such as: electronic controllers, servers, cloud platforms, virtual machines, desktop computers, laptops, tablet computers or smart phones, etc., which can be understood by those with ordinary knowledge in the technical field to which the present invention belongs. In addition, corresponding data receiving or transmitting units may be included to receive or transmit the required data. In addition, corresponding databases/storage units may be included to store the required data. In particular, unless otherwise specifically excluded or contradictory, the processor may be a collection of multiple processors based on a distributed system architecture, used to include/represent the process, mechanism and result of information flow processing between multiple processors.

The mechanism for transmitting and/or receiving signals between various components such as "systems", "devices" and "units" described in the present invention is based on the configuration of corresponding hardware and/or matching software systems and/or the realization of the Internet of Things between various components, and these technologies are understandable to those with ordinary knowledge in this field.

The similar terms such as "combination", "assembly", "assembly" or "setting" mentioned in the present invention mainly include the connection that can be separated without damaging the components, or the connection that makes the components inseparable, which can be selected by those with ordinary knowledge in the field according to the materials of the components to be connected or the assembly requirements.

其中，RE_total代表加總相對誤差值；n代表在同一偵測位置的偵測單元的數量；i代表個別偵測單元的索引值；j代表不同於i之個別偵測單元的索引值；｜C_i-C_j｜代表任二個不同偵測單元所對應偵測值的差值再取絕對值；M_ij代 表對應C_i與C_j之偵測值的平均值；RE_AVE代表平均相對誤差值；

代表 RE_total中所加總差值的總數量。 The detection signal processing method of the present invention comprises: using a plurality of detection units of the same specification to detect the same target of interest to obtain a plurality of corresponding detection signals; and receiving the plurality of detection signals through a processing unit, calculating a relative error relationship corresponding to the plurality of detection signals, and making the relative error relationship into an output information for output and/or storage; the relative error relationship is an average relative error value, or an average error level defined by the average relative error value; the average relative error value is at least a relative error value between each detection signal. The average error level is calculated by the difference between the average relative error values; wherein the definition of the above average relative error value is: after taking the absolute value to calculate the difference between all non-repeating and different detection values corresponding to each detection signal, each difference is divided by an average value calculated by the corresponding two detection values to obtain a relative error value, and then each relative error value is summed up to obtain a total relative error value, and finally the total relative error value is divided by the number of the difference to obtain the average relative error value. The corresponding calculation formula is:

Wherein, RE _total represents the total relative error value; n represents the number of detection units at the same detection position; i represents the index value of an individual detection unit; j represents the index value of an individual detection unit different from i; |C _i -C _j | represents the absolute value of the difference between the detection values corresponding to any two different detection units; _Mij represents the average value of the detection values corresponding to _Ci and _Cj ; RE _AVE represents the average relative error value;

Represents the total amount of differences added to RE _total .

Accordingly, the detection signal processing method of the present invention includes a relative error relationship through the output information. When the user, other device or system uses the output information, the credibility of the corresponding output value can be evaluated through the relative error relationship. In addition, by using multiple detection units to obtain multiple detection signals, the problem of being unable to continuously detect signals when a single detection unit fails or malfunctions can be avoided. In addition, through the definition of the average relative error value, the overall average variance of each two detection values (corresponding detection signals) relative to their average value (the average size of the corresponding detection signal) can be displayed.

The above average error level is defined as follows: when the average relative error value does not exceed 10%, the average error level is qualified; when the average relative error value is greater than 10% and does not exceed 20%, the average error level is acceptable; when the average relative error value is greater than 20% and does not exceed 30%, the average error level is ordinary; and when the average relative error value is greater than 30%, the average error level is unqualified. In this way, the average error level can be used to understand or evaluate the credibility of the output data.

其中，V_out代表輸出值；n代表在同一偵測位置的偵測單元的數量；i代表個別偵測單元的索引值；C_i代表索引值為i的偵測單元所獲得之偵測訊號所對應的偵測值。如此，透過將複數個偵測訊號所對應的偵測值進行平均，可避免任一個偵測單元因製造因素或其他環境因素影響所造成的偏誤，較使用同規格的單一偵測單元獲得的偵測訊號有更穩定的功效，而可達成減少個體偵測單元偵測偏誤的功效。 The processing unit calculates an output value corresponding to the plurality of detection signals, and forms the output information with the relative error relationship for output and/or storage; the output value is defined as the sum of the detection values corresponding to each detection signal and then divided by the total number of corresponding detection units, and the calculation formula is:

Among them, V _out represents the output value; n represents the number of detection units at the same detection position; i represents the index value of an individual detection unit; _Ci represents the detection value corresponding to the detection signal obtained by the detection unit with index value i. In this way, by averaging the detection values corresponding to multiple detection signals, the error caused by manufacturing factors or other environmental factors in any detection unit can be avoided. The detection signal obtained by using a single detection unit of the same specification has a more stable effect, and the effect of reducing the detection error of individual detection units can be achieved.

The output information is transmitted to a receiving device, and when the relative error relationship reaches a specific standard, the processing unit generates a warning signal to the receiving device, so that the receiving device does not display the output data corresponding to the warning signal. In this way, through the above mechanism of generating a warning signal and not displaying the corresponding output information, it is possible to directly prevent the receiving device or the user from using low-reliability information, thereby achieving the effect of improving the reliability of the output information.

The output information is transmitted to a receiving device, and when the relative error relationship reaches a specific standard, the processing unit generates a maintenance signal to the receiving device, so that the receiving device generates a corresponding notification message according to the maintenance signal, and the notification message includes the location information of the corresponding detection unit. In this way, through the above-mentioned mechanism of generating a maintenance signal and obtaining a corresponding notification message, the user can be reminded to repair the detection unit that may fail or malfunction, thereby achieving the effect of ensuring the normal operation of the detection device and ensuring the acquisition of a highly reliable detection signal and output information.

Among them, when the relative error relationship reaches a specific standard, the processing unit can determine whether each detection unit is failed or faulty according to a preset mechanism; when any detection unit is judged to be failed or faulty, the processing unit calculates with the detection signal of other detection units that are not failed and not faulty to update the relative error relationship. In this way, through the mechanism of generating output information with the detection signal of other detection units that are not failed and not faulty, the effect of excluding low-reliability information can be achieved, thereby ensuring that high-reliability output information is obtained.

Among them, when any detection unit is judged to be invalid or faulty, the processing unit generates a maintenance signal to a receiving device, so that the receiving device generates a corresponding notification message according to the maintenance signal, and the notification message at least includes the location information of the detection unit judged to be invalid or faulty. In this way, through the above-mentioned mechanism of generating a maintenance signal and obtaining a corresponding notification message, the user can be reminded to repair the detection unit that may be invalid or faulty, thereby achieving the effect of ensuring the normal operation of the detection device and ensuring the acquisition of a highly reliable detection signal and output information.

The detection system of the present invention comprises: a detection device having a body and a plurality of detection units of the same specification arranged on the body; and a processing unit coupled to each of the detection units and executing the detection signal processing method as described above.

Accordingly, the detection system of the present invention includes a relative error relationship in the output information. When a user, other device or system uses the output information, the reliability of the corresponding output value can be evaluated through the relative error relationship. In addition, by having a plurality of detection units in the detection device, the problem of being unable to continuously detect signals when a single detection unit fails or malfunctions can be avoided.

Among them, the detection device has only two detection units, and the body has an internal space and two airflow channels. The internal space is formed by two subspaces that are not connected to each other. Each detection unit is set in a different subspace, and each airflow channel is connected to a different subspace to guide the air outside the body along each airflow channel into the corresponding subspace for the corresponding detection unit to perform detection. In this way, through the characteristics of each detection module (including the detection unit, subspace and airflow channel) being spatially independent, the effect of reducing interference between the detection modules can be achieved, and the effect of allowing other detection modules that do not need to be repaired in the same detection device to operate normally during maintenance operations can be achieved.

1: Detection device

10: Body

11: Detection unit

12: Air flow channel

2: Processing unit

3: Receiving device

31: Display

S: Internal space

Ss: Subspace

[Figure 1] A schematic diagram of the system configuration of a preferred embodiment of the detection system of the present invention.

[Figure 2] A schematic diagram of the system configuration of another preferred embodiment of the detection system of the present invention.

[Figure 3] A schematic diagram of the system configuration of another preferred embodiment of the detection system of the present invention.

In order to make the above and other purposes, features and advantages of the present invention more clearly understood, the following specifically cites the preferred embodiments of the present invention and provides a detailed description in conjunction with the attached drawings; in addition, the same symbols in different drawings are considered the same and their descriptions will be omitted.

Please refer to FIG. 1, which is a preferred embodiment of the detection system of the present invention, including a detection device 1 and a processing unit 2, wherein the detection device 1 is coupled to the processing unit 2. Optionally, a receiving device 3 is further included to be coupled to the processing unit 2.

The detection device 1 has a plurality of detection units 11 for detecting corresponding signals of the same target of interest at the same location at the same time. Optionally, the detection device 1 preferably has a body 10 for the plurality of detection units 11 to be set; or, optionally, each of the detection units 11 has an independent body to form a detection device 1 together. The "target of interest" refers to a quantifiable signal that can be sensed, detected, and measured by various detection units 11, such as the concentration of a specific substance, fluid velocity, temperature, humidity, and pressure, etc., and is not limited to the above examples.

Each of the detection units 11 has the same specifications and is used to detect a target of interest and obtain a corresponding detection signal. The "same specifications" means that the plurality of detection units 11 generate detection signals of approximately the same magnitude (Amplitude) under the same detection conditions (e.g., detecting the same target of interest at the same position (detection side position/detection area) at the same time). The "same-sized detection signals" means that the detection signals within the reasonable margin of error can be considered the same, especially considering the errors caused by individual manufacturing deviations, installation position deviations (it is impossible for them to completely overlap at the same point) of each detection unit 11 under normal operation; since the reasonable error range must be different depending on the detection target and the required precision of the detection unit 11, it is not limited in the present invention; however, for example, the reasonable error range can be defined as within plus or minus 5%, preferably within plus or minus 3%, and more preferably within plus or minus 1%.

The processing unit 2 is coupled to each of the detection units 11 to receive the detection signals of each of the detection units 11, and jointly calculates an average relative error value (Average Relative Error) and an optional output value from the received detection signals, and optionally converts the average relative error value into an average error level, so that the average relative error value and/or the average error level and the optional output value form an output information for output and/or storage. In other words, the output information includes the average relative error value and/or the average error level, and the output information optionally includes the output value. Optionally, the processing unit 2 can be a cloud server.

Preferably, the output information has a corresponding timestamp information, which can be the generation time of the detection signal corresponding to the output value, or the timestamp information can be the time when the output value and/or the average relative error value are calculated, so as to distinguish the order of generation of each information, and can be used to analyze/obtain the change of the detection signal or output value corresponding to a target of interest over time. Preferably, the timestamp can be, for example, a data form including year, month, day, hour, minute and second. It should be noted that the meaning and data type represented by the timestamp are not limited to the above, and are understandable to those with ordinary knowledge in the technical field of the present invention and will not be elaborated.

Optionally, the output information can be output/transmitted to the receiving device 3, which is, for example, a user's mobile device (such as a mobile phone, tablet, computer, etc.) or a monitoring device of a monitoring center. Optionally, the receiving device 3 can have a corresponding display 31, so that the corresponding display 31 can present the output information (the average relative error value and/or the average error level, and the optional output value) received by the receiving device 3. Optionally, during the transmission or application of the output information, the output information can be stored by a storage unit (not shown).

其中，V_out代表輸出值；n代表在同一偵測位置的偵測單元的數量；i代表個別偵測單元的索引值；C_i代表索引值為i的偵測單元所獲得之偵測訊號所對應的偵測值。。應注意的是，上述輸出值的計算方式僅為本發明所舉例的一實施例，且並不以此限。 Taking the detection unit 11 of the same specification as an example to detect the same target of interest at the same position, the above output value is defined as the average value calculated by summing up the detection values corresponding to each detection signal and dividing it by the total number of corresponding detection units 11. The corresponding calculation formula is presented as follows:

Wherein, V _out represents the output value; n represents the number of detection units at the same detection position; i represents the index value of an individual detection unit; _Ci represents the detection value corresponding to the detection signal obtained by the detection unit with index value i. It should be noted that the above-mentioned method for calculating the output value is only an embodiment of the present invention and is not limited thereto.

其中，RE_total代表加總相對誤差值；n代表在同一偵測位置的偵測單元11的數量；i代表個別偵測單元11的索引值；j代表不同於i之個別偵測單元11的 索引值；｜C_i-C_j｜代表任二個不同偵測單元11所對應偵測值的差再取絕對值；M_ij代表對應C_i與C_j之偵測值的平均值；RE_AVE代表平均相對誤差值；

代表RE_total中所加總差值的總數量，該總數量的意義等同數學式

所定義的數量，即可視為該偵測單元11的總數(特別可以是非失效及非故障者)中取任二者所計算的數量。 The definition of the above average relative error value is: after taking the absolute value to calculate all the non-repeating and different differences between the detection values corresponding to each detection signal, each difference is divided by an average value calculated by the corresponding two detection values to obtain a relative error value (corresponding to the difference between the detection signals/detection values detected by the two detection units 11), and then each relative error value is summed up to obtain a summed relative error value, and finally the summed relative error value is divided by the number of the differences to obtain the average relative error value; the corresponding calculation formula is presented as follows:

Wherein, RE _total represents the total relative error value; n represents the number of detection units 11 at the same detection position; i represents the index value of the individual detection unit 11; j represents the index value of the individual detection unit 11 different from i; |C _i -C _j | represents the absolute value of the difference between the detection values corresponding to any two different detection units 11; _Mij represents the average value of the detection values corresponding to _Ci and _Cj ; RE _AVE represents the average relative error value;

Represents the total amount of differences added to RE _total . The meaning of this total is equivalent to the mathematical formula

The defined quantity may be regarded as the quantity calculated by taking any two of the total number of the detection units 11 (particularly, the non-failed ones and the non-faulty ones).

Preferably, corresponding to the interval calculated by the above average relative error value, the present invention proposes an average error level and presents it as shown in the following Table 1.

In detail, the size of the average relative error value is positively correlated with the inaccuracy or failure rate of at least one of the corresponding detection units 11; that is, as the degree of inaccuracy or failure of one of the above-mentioned multiple detection units 11 increases, the difference between the detection signal obtained by the inaccurate or failed detection unit 11 and the corresponding real information of the target of interest becomes larger and more inaccurate, thereby increasing the probability and degree of inaccuracy of the output value/average value of the overall output. Therefore, the average error level defined according to the range of the average relative error value can be used as a credibility indicator of the corresponding output value, and as the average error level moves from "qualified", "acceptable", "normal" to "unqualified" (i.e., the average relative error value becomes higher and higher), the credibility of the corresponding output value becomes worse.

In this way, by making the output information include the average relative error value and/or the average error level, and optionally the status of the output value, the system or user corresponding to the receiving device 3 can know the average relative error value and/or the relative error level corresponding to the currently obtained output value, and then judge the referenceability (reliability) of the output value, and optionally take corresponding processing according to the average relative error value and/or the average error level. It should be noted that the specific valve values defined by the above 10%, 20% and 30% can preferably be adjusted according to the specifications of the detection unit 11, the use environment, and the user's needs. For example, under more stringent use conditions, the specific valve value can be 5%, 10% and 15% (arithmetic progression formed by specific differences) or can be 1%, 2.5%, 5% (multiple valve values formed by non-specific differences); Optionally, the "level" (corresponding to the average error level) can have at least two levels, and is not limited to the four levels proposed in the present invention ("qualified", "acceptable", "normal", "unqualified").

Please refer to FIG. 2, which is another preferred embodiment of the detection system of the present invention. The detection device 1 in the detection system has only two detection units 11. Preferably, the detection device 1 has a body 10 for the two detection units 11 to be installed. More preferably, the detection device 1 is used to detect the air quality in an environment and is installed at a specific position in the environment. The types of air quality may include, for example, PM _2.5 , TVOCs (total volatile organic compounds), NH ₃ , H ₂ S and other air quality indicators, but are not limited thereto; optionally, based on the two detection units 11 having the same specifications, the two detection units 11 may simultaneously measure the same one or more of the multiple air quality indicators. In addition, it should be noted that in this embodiment, the "air quality" or "air quality indicator" is the aforementioned "target of interest".

In detail, the body 10 defines an internal space S, and the body 10 has two airflow channels 12, which respectively connect the external environment of the body 10 and the internal space S to guide the air/gas outside the body 10 to enter the internal space S along the airflow channels 12; the two detection units 11 are arranged in the internal space S and each corresponds to a different one in the airflow channel 12.

Preferably, as shown in FIG. 3 , the internal space S is formed by a plurality of subspaces Ss that are not connected to each other (in this embodiment, there are only two subspaces Ss), each of the detection units 11 is disposed in a different subspace Ss, and each of the airflow channels 12 is connected to a different subspace Ss, so as to guide the air outside the body 10 along each of the airflow channels 12 into the corresponding subspace Ss for detection by the corresponding detection unit 11; in this way, each of the detection units 11, each of the airflow channels 12 and each of the subspaces Ss are independent of each other (not connected). ) detection module; in other words, the above-mentioned detection modules have the characteristic of being spatially independent from each other, thereby reducing interference between the detection modules. In particular, for example, in the case where a detection unit 11 is burned, the signals corresponding to the air quality detected by other detection units 11 will be seriously interfered with; in addition, each detection module has the characteristic of being spatially independent from each other. When any detection module needs to be repaired, replaced or calibrated, the detection units 11 in other detection modules can still function normally to continuously monitor the air quality (i.e. corresponding to the aforementioned target of interest).

According to the aforementioned detection system, the present invention can implement a detection signal processing method, which includes the following steps:

Step S1: Obtain multiple detection serial numbers.

Use multiple detection units 11 of the same specification to detect the same target of interest to obtain multiple corresponding detection signals.

Step S2: Generate output information.

The plurality of detection signals are received by a processing unit 2, an output value and/or a relative error relationship corresponding to the plurality of detection signals are calculated, and the relative error relationship and the optional output value are made into an output information for output and/or storage. The relative error relationship is an average relative error value and/or an average error level; the average relative error value includes a difference calculated by the difference between the detection signals, and the average error level is defined by the difference degree of the average relative error value (as shown in Table 1).

Preferably, the processing unit 2 will add corresponding processing signals according to the difference in relative error relationships (average relative error value and/or average error level), so that different relative error relationships have different processing signals, and the output information further includes the processing signal, so that the receiving device 3 that receives the output information can present the corresponding output value and/or relative error relationship (presented/displayed through the corresponding display 31) in at least one of different sounds, colors, fonts (including fonts or font sizes) and annotated text reminders according to different processing signals. In this way, compared with simply displaying information about relative error relationships, it can enhance the user's intuitive understanding of the reliability of output data (especially output values), thereby preventing users from using output data with low reliability.

Optionally, in one embodiment, when the processing unit 2 transmits the output information to a receiving device 3, regardless of the result of any relative error relationship (average relative error value and/or average error level), the corresponding output value and relative error relationship will be transmitted to the receiving device 3, so that the corresponding system or user can obtain the real-time output value and relative error relationship corresponding to the target of interest. At this time, the system or user can evaluate or judge the reference value (credibility) of the output value based on the average relative error value and/or average error level in the relative error relationship. Thus, by simultaneously outputting/displaying the output value and the relative error relationship, it helps to improve the transparency of the output data, and by revealing the relative error relationship, it can prevent users from using output data with low credibility.

Optionally, in one embodiment, when the relative error relationship reaches a specific standard, for example, when the average relative error value reaches or exceeds a warning valve value, or for example, when the average error level reaches a warning level, the processing unit 2 generates a warning signal to a corresponding receiving device 3, so that the receiving device 3 will not present the output data corresponding to the warning signal, and optionally presents information such as "failure", "fault", "excessive error", etc. to describe the current status. The definition of the warning valve value may be, for example, a judgment valve value corresponding to the average error level of "unacceptable" in Table 1 (i.e., when the average relative error value is greater than 30%); at this time, the warning level is "unacceptable" in the average error level; however, the above definition of the warning valve value and the warning level is only an example of a feasible method, and the present invention is not limited to this. In this way, through the above mechanism of generating a warning signal and not displaying the corresponding output information, it is possible to directly prevent the receiving device 3 or the user from using low-reliability information.

In addition, optionally, when the relative error relationship reaches a specific standard (such as the warning valve value or warning level mentioned above), the processing unit 2 generates a maintenance signal to the corresponding device; the corresponding device is, for example, the receiving device 3, and in particular, the receiving device 3 can correspond to a mobile phone, tablet or computer of an administrator or a maintenance personnel; the maintenance signal can, for example, cause the receiving device 3 to generate or receive a notification message (such as a text message, or any message generated by the built-in software); the notification message at least includes the location information of the corresponding detection device 1 and/or detection unit 11, so that the relevant personnel can perform corresponding maintenance operations. In this way, through the above mechanism of generating a maintenance signal and obtaining a corresponding notification message, the user can be reminded to perform maintenance on the detection unit 11 that may fail or malfunction, thereby ensuring the normal operation of the detection device 1 and ensuring that a highly reliable detection signal and output information can be obtained.

In addition, optionally, when the relative error relationship reaches a specific standard (such as the warning valve value or warning level mentioned above), the processing unit 2 can determine whether each of the detection units 11 is failed or faulty according to a built-in preset mechanism, and when any detection unit 11 is judged to be failed or faulty, especially when no corresponding detection signal is generated, the processing unit 2 forms corresponding output information with the output value and/or relative error relationship (average relative error value and/or average error level) calculated by the detection signal of other detection units 11 that are not failed and not faulty; preferably, when any detection unit 11 is judged to be failed or faulty, the processing unit 2 generates corresponding output information with the output value and/or relative error relationship (average relative error value and/or average error level) calculated by the detection signal of other detection units 11 that are not failed and not faulty. When a fault occurs, the processing unit 2 may also generate a maintenance signal to the receiving device 3, so that the receiving device 3 generates a corresponding notification message according to the maintenance signal, and the notification message at least includes the location information of the detection unit 11 that is determined to be invalid or faulty; preferably, the notification message or the location information also includes an identifiable code of the detection unit 11, and the identifiable code may be, for example, the number on the detection unit 11, and each detection unit 11 has a different number, so that the user or maintenance personnel can easily distinguish the invalid or faulty detection units 11 according to the corresponding identifiable code.

In detail, for example, the default mechanism may be: using other detection signals in the history of detection signals generated by a detection unit 11 that are the same or similar to the current detection conditions to compare with the current suspected erroneous detection signal of the detection unit 11; or comparing the detection signal of a detection unit 11 with other detection signals corresponding to other detection units 11 adjacent to the detection unit 11. However, it should be noted that the description of the above default mechanism is only an example of a feasible method, and the present invention is not limited thereto. In this way, when a detection unit 11 is judged to be failed or faulty, the detection signal of other detection units 11 that are not failed or faulty is used to generate output information, so that low-reliability information can be excluded and high-reliability output information can be obtained.

In summary, the detection signal processing method and detection system of the present invention can avoid the problem that the detection device cannot continue to detect the signal when failure or malfunction occurs due to the detection device having only a single detection unit. In addition, the output information includes a relative error relationship and/or an output value. When a user, other device or system uses the output information, the credibility of the corresponding output value can be evaluated through the relative error relationship. In addition, by generating a corresponding processing signal corresponding to the relative error relationship, the output value and/or the related error relationship can be displayed in at least one of different sounds, colors, fonts (including fonts or font sizes) and annotated text reminders, so as to enhance the user's intuitiveness of the credibility of the output data, thereby preventing the user from using output data with low credibility. In addition, by outputting/displaying the relative error relationship, the user can be prevented from using output data with low credibility. In addition, by the above-mentioned mechanism of generating a warning signal and not displaying the corresponding output information, the receiving device or the user can be directly prevented from using information with low credibility. In addition, through the above-mentioned mechanism of generating maintenance signals and obtaining corresponding notification messages, users can be reminded to repair the detection units that may fail or fail, thereby ensuring the normal operation of the detection device and obtaining highly reliable detection signals and output information. In addition, through the mechanism of generating output information with the detection signals of other detection units that are not failed and not failed, low-reliability information can be excluded, and high-reliability output information can be obtained. In addition, through the characteristics of each detection module (including the detection unit, subspace and airflow channel) being spatially independent, the interference between the detection modules can be reduced, and during the maintenance operation, other detection modules in the same detection device can operate normally without repairing them.

Although the present invention has been disclosed using the above preferred embodiments, they are not intended to limit the present invention. Any person skilled in the art can make various changes and modifications to the above embodiments within the spirit and scope of the present invention. These changes and modifications are still within the technical scope protected by the present invention. Therefore, the protection scope of the present invention includes all changes within the meaning and equivalent scope recorded in the attached patent application scope. In addition, when the above several embodiments can be combined, the present invention includes any combination of implementations.

1: Detection device

10: Body

11: Detection unit

2: Processing unit

3: Receiving device

31: Display

Claims (9)

A detection signal processing method comprises: using a plurality of detection units of the same specification to detect the same target of interest to obtain a plurality of corresponding detection signals; and receiving the plurality of detection signals through a processing unit, calculating a relative error relationship corresponding to the plurality of detection signals, and outputting and/or storing the relative error relationship as output information; the relative error relationship is an average relative error value, or an average error level defined by the average relative error value; the average relative error value is at least a relative error value between each detection signal. The average error level is calculated based on the difference of the average relative error value; wherein the definition of the above average relative error value is: after taking the absolute value to calculate the difference between all non-repeating and different detection values corresponding to each detection signal, each difference is divided by an average value calculated by the corresponding two detection values to obtain a relative error value, and then each relative error value is summed up to obtain a total relative error value, and finally the total relative error value is divided by the number of the difference values to obtain the average relative error value. The corresponding calculation formula is:

Wherein, RE _total represents the total relative error value; n represents the number of detection units at the same detection position; i represents the index value of an individual detection unit; j represents the index value of an individual detection unit different from i; |C _i -C _j | represents the absolute value of the difference between the detection values corresponding to any two different detection units; _Mij represents the average value of the detection values corresponding to _Ci and _Cj ; RE _AVE represents the average relative error value;

Represents the total amount of differences added to RE _total . As in the detection signal processing method of claim 1, the above average error level is defined as follows: when the average relative error value does not exceed 10%, the average error level is qualified; when the average relative error value is greater than 10% and does not exceed 20%, the average error level is acceptable; when the average relative error value is greater than 20% and does not exceed 30%, the average error level is ordinary; and when the average relative error value is greater than 30%, the average error level is unqualified. A detection signal processing method as claimed in any one of claims 1 to 2, wherein the processing unit calculates an output value corresponding to the plurality of detection signals, and uses the output value and the relative error relationship as the output information for output and/or storage; the output value is defined as the sum of the detection values corresponding to each detection signal and then divided by the total number of corresponding detection units, and the calculation formula is:

Wherein, V _out represents the output value; n represents the number of detection units at the same detection position; i represents the index value of an individual detection unit; and _Ci represents the detection value corresponding to the detection signal obtained by the detection unit with index value i. A detection signal processing method as in any one of claim items 1 to 2, wherein the output information is transmitted to a receiving device, and when the relative error relationship reaches a specific standard, the processing unit generates a warning signal to the receiving device, so that the receiving device does not display the output data corresponding to the warning signal. A detection signal processing method as in any one of claim items 1 to 2, wherein the output information is transmitted to a receiving device, and when the relative error relationship reaches a specific standard, the processing unit generates a maintenance signal to the receiving device, so that the receiving device generates a corresponding notification message according to the maintenance signal, and the notification message includes the location information of the corresponding detection unit. A detection signal processing method as in any one of claim items 1 to 2, wherein when the relative error relationship reaches a specific standard, the processing unit can determine whether each detection unit is failed or faulty according to a preset mechanism; when any detection unit is determined to be failed or faulty, the processing unit calculates with the detection signals of other detection units that are not failed and not faulty to update the relative error relationship. As in claim 6, the detection signal processing method, wherein when any detection unit is judged to be failed or faulty, the processing unit generates a maintenance signal to a receiving device, so that the receiving device generates a corresponding notification message according to the maintenance signal, and the notification message at least includes the location information of the detection unit judged to be failed or faulty. A detection system comprises: a detection device having a body and a plurality of detection units of the same specification disposed on the body; and a processing unit coupled to each of the detection units and executing a detection signal processing method as in any one of claims 1 to 7. As in claim 8, the detection device has only two detection units, the body has an internal space and two airflow channels, the internal space is formed by two subspaces that are not connected to each other, each detection unit is arranged in a different subspace, and each airflow channel is connected to a different subspace to guide the air outside the body along each airflow channel into the corresponding subspace for detection by the corresponding detection unit.

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