CN114812682A - Detection circuit and protective tool - Google Patents

Abstract

The application discloses a detection circuit and a protective tool, wherein the detection circuit is used for detecting whether the protective tool is worn in a standard or not, and comprises a control unit and a first induction unit arranged on the inner side of the protective tool; the first sensing unit is used for sensing corresponding first capacitance change caused by a user side, generating a first sensing signal and sending the first sensing signal to the control unit; the control unit is used for judging whether the protective tool is in a wearing standard or not according to the first sensing signal. This application makes the detection circuitry who corresponds have simple structure and the cost of manufacture of relative low, can reduce the cost of generation that corresponds the protective equipment.

Description

Detection circuit and protective tool

Technical Field

The application relates to the technical field of circuits, in particular to a detection circuit and a protective tool.

Background

The protective equipment such as a helmet, an elbow guard, a visor and a knee guard for protecting the corresponding part of the user can ensure the safety of the user, for example, the helmet can protect the safety of the user during riding sports, and the like. Whether wear the standard to above-mentioned protective equipment and detect, can promote protective equipment protect function's reliability to the helmet explains as an example, when the user wears the helmet, detects whether the standard is worn to the helmet, can urge the user to correctly use the helmet, makes its protect function of helmet ability full play, more reliable protection user head.

Traditional protective equipment wears detection scheme often needs the trompil, judges whether the user correctly wears the protective equipment based on the optics principle that the through-hole corresponds that division, and this type of detection scheme is strict to the production technology requirement of protective equipment, leads to the manufacturing cost of protective equipment easily.

Disclosure of Invention

In view of this, this application provides a detection circuitry and protective equipment to solve current detection scheme and strict to the production technology requirement of protective equipment, lead to the manufacturing cost's of protective equipment problem easily.

The detection circuit is used for detecting whether the protective tool is worn in a standard or not, and comprises a control unit and a first sensing unit arranged on the inner side of the protective tool;

the first sensing unit is used for sensing corresponding first capacitance change caused by a user side, generating a first sensing signal and sending the first sensing signal to the control unit;

the control unit is used for judging whether the protective tool is in a wearing standard or not according to the first sensing signal.

Optionally, the detection circuit further includes a second sensing unit disposed in the protector;

the second sensing unit is used for sensing a corresponding second capacitance change caused by the user side, generating a second sensing signal and sending the second sensing signal to the control unit;

the control unit is further configured to use one of the first sensing signal and the second sensing signal as a target signal and the other as a calibration signal, calibrate the target signal using the calibration signal, and determine whether the brace is in a standard wearing state according to the calibrated target signal.

Optionally, the first sensing unit comprises a first flexible conductor structure, and the second sensing unit comprises a second flexible conductor structure; the first flexible conductor structure and the second flexible conductor structure are sequentially arranged towards the protector side along the user side.

Optionally, the first flexible conductor structure comprises a first metal mesh and the second flexible conductor structure comprises a second metal mesh.

Optionally, the first mesh size of the first metal mesh is smaller than the second mesh size of the second metal mesh; the control unit is further configured to acquire a signal difference between the first sensing signal and the second sensing signal, determine that the brace is worn if the signal difference is greater than or equal to a first detection threshold, and determine that the brace is not worn if the signal difference is less than the first detection threshold.

Optionally, the ratio of the first mesh size to the second mesh size ranges from 1:10 to 1: 15.

Optionally, the first flexible conductor structure comprises a first flexible conductor layer and the second flexible conductor structure comprises a second flexible conductor layer;

the control unit is further configured to acquire a signal difference between the first sensing signal and the second sensing signal, determine that the brace is worn according to a criterion if the signal difference is greater than or equal to a second detection threshold, and determine that the brace is not worn according to the criterion if the signal difference is less than the second detection threshold.

Optionally, the first flexible conductor structure and the second flexible conductor structure are respectively made of the same material.

Optionally, the first flexible conductor structure and the second flexible conductor structure are insulated from each other.

Optionally, the detection circuit further comprises a shielding layer; the shielding layer sets up the second flexible conductor structure with between the protective equipment side, be used for the shielding the interference that the protective equipment side caused the testing process.

Optionally, the detection circuit further comprises a ground layer; the grounding layer is arranged between the shielding layer and the protector side and used for providing reference potentials corresponding to all induction signals.

Optionally, the first flexible conductor structure is aligned with the second flexible conductor structure and located inside an edge of the shielding layer.

Optionally, the shield layer is located inside an edge of the ground layer.

Optionally, the shielding layer comprises a third flexible conductor layer; and/or, the ground plane comprises a fourth flexible conductor layer.

Optionally, the control unit includes a first detection pin, a second detection pin, a shielding pin, and a ground pin; the first detection pin is connected with the first flexible conductor structure, the second detection pin is connected with the second flexible conductor structure, the shielding pin is connected with the shielding layer, and the grounding pin is connected with the grounding layer.

The application still provides a protective equipment, includes above-mentioned arbitrary detection circuitry and protective equipment casing.

Optionally, the brace housing comprises a helmet housing.

Optionally, the inner side of the helmet shell comprises at least one detection area, and the ground layer, the shielding layer, the second flexible conductor structure and the first flexible conductor structure are sequentially arranged on the detection area

According to the detection circuit and the protective tool, the first sensing unit is arranged on the inner side of the protective tool, so that the first sensing unit senses the change of the corresponding first capacitor caused by the user side to generate a first sensing signal, and the control unit can simply and efficiently judge whether the protective tool is in a wearing standard or not according to the first sensing signal; the corresponding detection circuit has a simple structure and relatively low manufacturing cost, and the generation cost of the corresponding protective tool can be reduced; on the basis of realizing high-efficient detection, do not influence protective equipment outward appearance and wear the travelling comfort of in-process, can guarantee the user experience who corresponds.

Wherein detection circuitry is still including locating the second induction element in the protective equipment, the second induction element can respond to the user side and arouse corresponding second capacitance change, produce second induction signal, control unit regards as the target signal in first induction signal and the second induction signal, another signal regards as calibration signal, adopt calibration signal calibration target signal, judge whether the protective equipment wears the standard according to the target signal after the calibration, can calibrate the interference of environmental factor, effectively weaken or eliminate the interference that corresponds environmental factor and cause, promote the accuracy of testing result.

When first flexible conductor structure and second flexible conductor structure were arranged to the protective equipment side along user's side in proper order, adopt the first sensing signal of second sensing signal calibration, environmental factor such as the temperature fluctuation that can further weaken or eliminate the user and wear the protective equipment for a long time and cause the interference to the testing process, guarantee to correspond the accuracy in the testing process.

In addition, the first sensing unit and the second sensing unit are arranged on the inner side of the protective tool, so that the problem of interference caused by error touch and the like due to external factors of the protective tool can be avoided, and the accuracy in the corresponding detection process is further improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic diagram of a detection circuit according to an embodiment of the present application;

FIG. 2 is a schematic diagram of a detection circuit according to another embodiment of the present application;

FIG. 3 is a schematic illustration of the positions of a first flexible conductor structure and a second flexible conductor structure in an embodiment of the present application;

fig. 4 is a schematic structural view of a first expanded metal and a second expanded metal in an embodiment of the present application;

FIG. 5 is a schematic illustration of the corresponding positions of the first flexible conductor structure, the second flexible conductor structure, the third flexible conductor layer and the fourth flexible conductor layer in an embodiment of the present application;

fig. 6a and 6b are schematic diagrams illustrating the corresponding arrangement relationship of the first flexible conductor structure, the second flexible conductor structure, the third flexible conductor layer and the fourth flexible conductor layer in an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application are clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. The following embodiments and their technical features may be combined with each other without conflict.

In a first aspect of the present application, a detection circuit is provided for detecting whether the protector is in a standard wearing state, and as shown in fig. 1, the detection circuit includes a control unit 130, and a first sensing unit 110 disposed inside the protector; the first sensing unit 110 is configured to sense a first capacitance change caused by a user side, generate a first sensing signal, and send the first sensing signal to the control unit 130; the control unit 130 is configured to determine whether the brace is worn according to the first sensing signal.

The first sensing unit 110 may include a capacitor, a conductive layer, and/or a metal mesh, which may change a capacitance parameter with a corresponding ground when a user approaches the first sensing unit. Wherein the first capacitance includes a capacitance between the first sensing unit 110 and a corresponding ground terminal. The control unit 130 may include an MCU (micro control unit) as an intelligent control unit with small volume and low power consumption. In the actual detection process, the control unit 130 may pre-store a corresponding detection threshold, compare the relationship between the first sensing signal and the detection threshold, and identify whether the user wears the protector correctly according to the comparison result; for example, if the first sensing signal is greater than or equal to the detection threshold, the wearing standard of the protective tool is determined, if the first sensing signal is less than the detection threshold, the non-wearing standard of the protective tool is determined, and the like.

The detection circuit locates the first sensing unit 110 inside the protector, so that the first sensing unit 110 senses the corresponding first capacitance change caused by the user side to generate a first sensing signal, and the control unit 130 can simply and efficiently determine whether the protector is in a standard according to the first sensing signal; the detection circuit has a simple structure and relatively low manufacturing cost, and can reduce the generation cost of the corresponding protective tool; on the basis of realizing high-efficient detection, do not influence protective equipment outward appearance and wear the travelling comfort of in-process, can guarantee the user experience who corresponds.

In one embodiment, as shown with reference to fig. 2, the detection circuit further includes a second sensing unit 120 disposed within the brace; the second sensing unit 120 is configured to sense a second capacitance change caused by the user side, generate a second sensing signal, and send the second sensing signal to the control unit 130; the control unit 130 is further configured to use one of the first sensing signal and the second sensing signal as a target signal, use the other signal as a calibration signal, calibrate the target signal using the calibration signal, and determine whether the protector is worn according to the calibrated target signal, so that the calibrated target signal can eliminate or weaken interference caused by environmental factors, thereby ensuring accuracy of a protector wearing detection process according to the calibrated target signal.

The second sensing unit 120 may include a capacitor, a conductive layer, and/or a metal mesh, which may change a capacitance parameter with a corresponding ground when a user approaches the second sensing unit. Wherein the second capacitance includes a capacitance between the second sensing unit 120 and a corresponding ground terminal. In some detection circuits, the first sensing signal includes a first voltage, the second sensing signal includes a voltage, the control unit 130 includes a first detection pin and a second detection pin, the first detection pin is connected to the first sensing unit 110, when a user wears a corresponding protector, a capacitance between the first sensing unit 110 and a ground changes, the first voltage corresponding to the first detection pin changes accordingly, a capacitance between the second sensing unit 120 and the ground changes accordingly, and a second voltage corresponding to the second detection pin changes accordingly, at this time, the control unit 130 obtains the first voltage and the second voltage, and may use the first voltage as a target signal, use the second voltage as a calibration signal, calibrate the target signal with the calibration signal, and determine whether the user wears the protector correctly according to the calibrated target signal. Alternatively, the control unit 130 may pre-store a corresponding detection threshold, compare the calibrated target signal with the detection threshold, and identify whether the user wears the protector correctly according to the comparison result.

Alternatively, the first sensing unit 110 and the second sensing unit 120 may adopt the same type of structure, for example, both adopt a metal mesh type of structure, so that there is only a size difference between the first sensing signal generated by the first sensing unit 110 and the second sensing signal generated by the second sensing unit 120, which can simplify the data processing process in the case that the subsequent control unit 130 performs the wear detection of the protector according to the first sensing signal and the second sensing signal. After receiving the first sensing signal and the second sensing signal, the control unit takes one signal as a target signal and takes the other signal as a reference signal, the reference signal is adopted to calibrate the target signal, and whether the protector is worn in a standard mode is judged according to the magnitude relation between the calibrated target signal and the corresponding detection threshold value, so that whether the user wears the protector in the standard mode is simply and efficiently detected. Optionally, the first sensing signal and the second sensing signal include the same type of electrical signals, such as voltage signals, and the like, so that the control unit 130 performs simple addition and subtraction operations on the first sensing signal and the second sensing signal, and can calibrate one signal with the other signal, thereby further simplifying the corresponding detection process. Optionally, after the control unit 130 receives the first sensing signal and the second sensing signal, the first sensing signal and the second sensing signal may be converted into corresponding digital signals respectively, so as to perform detection according to each digital signal, and on the basis of ensuring the detection accuracy, the detection efficiency can be further improved.

In one embodiment, the first sensing cell comprises a first flexible conductor structure and the second sensing cell comprises a second flexible conductor structure; the first flexible conductor structure and the second flexible conductor structure are sequentially arranged towards the protective tool side along the user side, so that the first flexible conductor structure can more accurately generate a first sensing signal aiming at the wearing state of the user when the user wears the protective tool, and the second flexible conductor structure can accurately sense the environmental factors between the protective tool and the first flexible conductor structure to generate a corresponding second sensing signal for calibrating the first sensing signal generated by the first flexible conductor structure; in addition, the first sensing unit and the second sensing unit are of flexible structures, so that the comfort of the user wearing the protective tool can be guaranteed, and the corresponding user experience is improved.

Alternatively, as shown in fig. 3, if the upper end of fig. 3 represents the side where the user is located and the lower end represents the side where the brace is located, the first flexible conductor structure 111 is located above and closer to the user, and the second flexible conductor structure 121 is located below and closer to the brace; at this time, a first sensing signal generated by sensing of the first flexible conductor structure 111 is a target signal, a second sensing signal generated by sensing of the second flexible conductor structure 121 is a target signal and is reference information, and the first sensing signal is calibrated by using the second sensing signal, so that sensing of the first sensing signal caused by environmental factors such as temperature fluctuation can be weakened or eliminated, and accuracy of a detection result is improved.

In one example, the first flexible conductor structure includes a first metal mesh and the second flexible conductor structure includes the second metal mesh. In this example, first flexible conductor structure and second flexible conductor structure all adopt the network structure, can make first flexible conductor structure and second flexible conductor structure when the user wears the protective equipment, and the homoenergetic accurately feels the user state, produces corresponding sensing signal, can promote the sensitivity of first flexible conductor structure and second flexible conductor structure in the testing process. Optionally, the characteristics of the first mesh wire forming the first metal mesh and the characteristics of the second mesh wire forming the first mesh wire of the second metal mesh are the same, such as the materials of the first mesh wire and the second mesh wire are the same, the diameters and the like are the same, and the like, so as to ensure the matching of the capacitance variation characteristics corresponding to the first metal mesh and the second metal mesh, respectively. The shape of the first mesh of first metal net and the second mesh of second metal net is the same, can have the difference between the size to certain difference exists between the second induction signal that makes wherein second induction signal can accurately calibrate first induction signal between the first induction signal that makes first metal net correspond and the second induction signal that the second metal net corresponds.

In one example, a first mesh size of the first metal mesh is smaller than a second mesh size of the second metal mesh; the control unit is further configured to acquire a signal difference between the first sensing signal and the second sensing signal, determine that the brace is worn according to a criterion if the signal difference is greater than or equal to a first detection threshold, and determine that the brace is not worn according to the criterion if the signal difference is less than the first detection threshold. Wherein the first detection threshold value can be determined according to the characteristics of the materials and/or the mesh sizes adopted by the first metal net and the second metal net respectively. The judgment rule of the control unit is determined according to the capacitance change characteristics of the metal nets corresponding to the mesh sizes, the judgment rule of the control unit is simpler on the basis of simplifying the detection circuit structure, and the corresponding detection efficiency can be improved on the basis of ensuring the detection accuracy.

Specifically, referring to fig. 4, the first expanded metal 113 and the second expanded metal 123 respectively include a plurality of mesh holes having a uniform size. The first mesh size of the first expanded metal 113 is smaller than the second mesh size of the second expanded metal 123; that is, the sizes of the respective meshes in the first expanded metal 113 are equally small, and the sizes of the respective meshes in the second expanded metal 123 are equally large. Wherein the first detection threshold may be set in accordance with a size difference of the second mesh size and the first mesh size; optionally, the first detection threshold is in a positive correlation with the size difference, so that whether the user wears the corresponding protector in a standard manner can be more accurately determined according to the first detection threshold.

Specifically, the ratio of the first mesh size to the second mesh size ranges from 1:10 to 1:15, i.e., the second mesh size is 10 times the second mesh size at the minimum and 15 times the second mesh size at the maximum, so that the signal difference between the first sensing signal and the second sensing signal can more accurately characterize whether the brace is worn or not. Optionally, the selection rule of the first mesh size and the second mesh size is consistent, that is, both are the same parameter of the corresponding mesh, for example, both are the width of the corresponding mesh, both are the shortest diagonal length of the corresponding mesh, or both are the longest diagonal length of the corresponding mesh, and the like.

In one example, the first flexible conductor structure comprises a first flexible conductor layer and the second flexible conductor structure comprises the second flexible conductor layer; the control unit is further configured to acquire a signal difference between the first sensing signal and the second sensing signal, determine that the brace is worn according to a criterion if the signal difference is greater than or equal to a second detection threshold, and determine that the brace is not worn according to the criterion if the signal difference is less than the second detection threshold. The second detection threshold may be determined according to the material and/or related dimensions of the first flexible conductor layer and the second flexible conductor layer. This example adopts the first flexible conductor layer to form detection electric capacity to produce first induced signal as the target signal, adopts the second flexible conductor layer as reference electric capacity to produce the second induced signal as calibration signal, can accurately detect with high efficiency whether the user accurately wears corresponding protective equipment.

In one example, the first flexible conductor structure and the second flexible conductor structure are respectively made of the same material, for example, the first flexible conductor structure and the second flexible conductor structure are both copper mesh, or the first flexible conductor structure and the second flexible conductor structure are both aluminum sheet layers, and the like, so that the first flexible conductor structure and the second flexible conductor structure have the same or similar capacitance variation characteristics, and the accuracy of corresponding detection according to the signal difference between the first sensing signal and the second sensing signal can be improved.

Optionally, the first flexible conductor structure and the second flexible conductor structure are insulated from each other, so that the first flexible conductor structure and the second flexible conductor structure are not interfered with each other in the working process and are independent from each other, and the accuracy of the corresponding detection result is ensured. Alternatively, the first flexible conductor structure and the second flexible conductor structure may be separated by an insulating film, for example, the first flexible conductor structure and the second flexible conductor structure may both be FPCs (flexible circuit boards), and the insulating film is used for separation between the FPCs, and the like. Optionally, the first flexible conductor structure and the second flexible conductor structure are respectively covered with an isolation layer so as to be insulated from each other.

In one embodiment, the detection circuit further comprises a shielding layer; the shielding layer sets up the second flexible conductor structure with between the protective equipment side, be used for the shielding the interference that the protective equipment side caused to testing process promotes testing process's validity. Alternatively, the protector may include a material capable of performing a grounding function, such as a conductive material, and the first sensing signal and the second sensing signal may be provided with corresponding reference potentials without providing a grounding layer.

In one example, the detection circuit further comprises a ground plane; the grounding layer is arranged between the shielding layer and the protector side and used for providing reference potentials corresponding to various sensing signals (such as a first sensing signal and a second sensing signal) and ensuring the orderliness in the subsequent data processing process.

Optionally, the detection circuit may further include a power supply unit such as a battery, so that a corresponding detection loop is formed among the first sensing unit, the second sensing unit, the control unit and other structures, and reliability of the detection circuit in the working process is ensured.

Optionally, the first flexible conductor structure is aligned with the second flexible conductor structure to further ensure consistency of capacitance variation characteristics corresponding to the first flexible conductor structure and the second flexible conductor structure, respectively. Optionally, the first flexible conductor structure and the second flexible conductor structure are overlapped and insulated from each other, so that the first flexible conductor structure and the second flexible conductor structure can generate corresponding sensing signals at close positions, and the first sensing signal can be more accurately calibrated according to the second sensing signal. Optionally, the first flexible conductor structure and the second flexible conductor structure are respectively located within an edge of the shielding layer, for example, the edge after the first flexible conductor structure and the second flexible conductor structure are overlapped is located within the edge of the shielding layer, so that the shielding layer can more fully exert a shielding function, parasitic capacitances generated between the first flexible conductor structure and the second flexible conductor structure and other structures are reduced, and accuracy of the first sensing signal and accuracy of the second sensing signal are respectively improved.

Optionally, the shielding layer is located inside the edge of the ground layer, that is, the edge of the shielding layer is located inside the edge of the shielding layer, so that the ground layer can provide a shielding function for the shielding layer, and the accuracy of the corresponding detection circuit in the detection process is further improved.

Alternatively, the ground plane may have an area of 100mm ² The protection tool has relatively small areas (square millimeter) and the like so as to carry out single-point detection on whether the user correctly wears the protection tool on the inner side of the protection tool and ensure the comfort of the user when wearing the protection tool; the problem of interference such as mistake that the protective equipment external factor caused touches can also be avoided, the accuracy in the corresponding testing process is promoted.

In one example, the shielding layer and the ground layer are flexible conductor layers respectively, for example, the shielding layer includes a third flexible conductor layer, the ground layer includes a fourth flexible conductor layer, and so on, so that the shielding layer can shield the first flexible conductor structure and the second flexible conductor structure from other signal interference, and the ground layer can effectively provide a grounding function.

Optionally, the materials of the first flexible conductor structure, the second flexible conductor structure, the third flexible conductor layer and the fourth flexible conductor layer are the same, for example, metal copper is used, so that the corresponding production process can be simplified, and the production efficiency can be improved. First flexible conductor structure, second flexible conductor structure, third flexible conductor layer and fourth flexible conductor layer here can form FPC, make detection circuitry have distribution density height, small, light in weight, thickness is thin, the advantage that the nature of buckling is good, can improve the reliability that corresponds the testing process, avoid increasing the weight that corresponds the protective equipment, avoid occupying the inner space of protective equipment, the travelling comfort when guaranteeing that the user wears the protective equipment.

In one example, the arrangement of the relevant structures in the detection circuit can be as shown with reference to fig. 5, including, in order from the user side to the brace side, a first flexible conductor structure 115, a second flexible conductor structure 125, a third flexible conductor layer 151, and a fourth flexible conductor layer 152; wherein the first flexible conductor structure 115 corresponds to the first flexible conductor structure 111 of the embodiment shown in fig. 3 and the second flexible conductor structure 125 corresponds to the first flexible conductor structure 121 of the embodiment shown in fig. 3. The first flexible conductor structure 115 is aligned with the second flexible conductor structure 125, both within the edge of the third flexible conductor layer 151, and the distance from the edge of the third flexible conductor layer 151 can be set according to the structure or size of the first flexible conductor structure 115 and the second flexible conductor structure 125, such as the distance between the edges of the two structures and the edge of the third flexible conductor layer 151 being 1mm (millimeter). The third flexible conductor layer 151 is within the edge of the fourth flexible conductor layer 152, and the distance between the edge of the fourth flexible conductor layer 152 and the third flexible conductor layer 151 can be set according to the size of the third flexible conductor layer 151 and other factors, such as the distance between the edge of the third flexible conductor layer 151 and the edge of the fourth flexible conductor layer 152 is 1 mm.

Optionally, the above-mentioned protector includes a helmet, and the arrangement relationship among the first flexible conductor structure 115, the second flexible conductor structure 125, the third flexible conductor layer 151, and the fourth flexible conductor layer 152 in the detection circuit may be determined according to the arrangement position thereof. For example, if the layers of structures are disposed at the corresponding top of the head of the helmet, the arrangement relationship may be as shown in fig. 6a, and include, from bottom to top, a first flexible conductor structure 115, a second flexible conductor structure 125, a third flexible conductor layer 151, and a fourth flexible conductor layer 152; if the layers are disposed on one side of the helmet, they may be arranged as shown in fig. 6b, and include a first flexible conductor structure 115, a second flexible conductor structure 125, a third flexible conductor layer 151 and a fourth flexible conductor layer 152 in sequence from the head of the user to the side of the helmet.

In one example, a detection circuit provided in a helmet is taken as an example for illustration, and characteristics of materials, relevant dimensions and the like of each structure in the detection circuit can be referred to table 1. The first flexible conductor structure and the second flexible conductor structure are both copper nets, the width (diameter) of copper wires corresponding to the copper nets is 0.1mm, the first mesh size of the first flexible conductor structure is 0.1mm, the mesh size of the first flexible conductor structure is 1.4mm, and the ratio of the first mesh size to the second mesh size is 1: 14. The third flexible conductor layer and the fourth flexible conductor layer are both solid copper, namely, flexible copper layers. The first flexible conductor structure is aligned with the second flexible conductor structure, the third flexible conductor layer is flared 1mm relative to the second flexible conductor structure, and the fourth flexible conductor layer is flared 1mm relative to the third flexible conductor layer.

TABLE 1

In one example, the control unit includes a first detection pin, a second detection pin, a shield pin, and a ground pin; the first detection pin is connected with the first flexible conductor structure, the second detection pin is connected with the second flexible conductor structure, the shielding pin is connected with the shielding layer, and the grounding pin is connected with the grounding layer. Like this the control unit can accurately acquire first sensing signal and second sensing signal, accurately detects whether the user correctly wears corresponding protective equipment according to first sensing signal and second sensing signal.

Alternatively, a console may be provided at a position of the brace, such as the top, side or bottom, and the control unit may be provided at the console to acquire the first sensing signal and the second sensing signal at the console to detect whether the user wears the brace correctly. Optionally, when the user wears the brace, the first flexible conductor structure, the second flexible conductor structure, the third flexible conductor layer and the fourth flexible conductor layer are located between the user and the brace, and the first flexible conductor structure, the second flexible conductor structure, the third flexible conductor layer and the fourth flexible conductor layer are sequentially arranged from the user to the brace, so that the first flexible conductor structure can accurately generate the first sensing signal and the second flexible conductor structure can accurately generate the second sensing signal.

The detection circuit is characterized in that the first sensing unit and the second sensing unit are arranged on the inner side of the protective device, so that the first sensing unit senses the change of the corresponding first capacitance caused by the user side to generate a first sensing signal, and the control unit can simply and efficiently judge whether the protective device is in a wearing standard or not according to the first sensing signal; the corresponding detection circuit has a simple structure and relatively low manufacturing cost, and the generation cost of the corresponding protective tool can be reduced; on the basis of realizing high-efficient detection, do not influence protective equipment outward appearance and wear the travelling comfort of in-process, can guarantee the user experience who corresponds. Above-mentioned detection circuitry is still including locating the second induction element in the protective equipment, and second induction element response user side arouses the second capacitance change that corresponds, produces the second induction signal, and the control unit will first induction signal with one signal in the second induction signal is as target signal, and another signal is as calibration signal, adopts calibration signal calibration target signal, judges whether the protective equipment wears the standard according to the target signal after the calibration and can calibrate the interference of environmental factor, effectively weakens or eliminates the interference that corresponds environmental factor and causes, promotes the accuracy of testing result. When first flexible conductor structure and second flexible conductor structure were arranged to the protective equipment side along user's side in proper order, adopt the first sensing signal of second sensing signal calibration, environmental factor such as the temperature fluctuation that can further weaken or eliminate the user and wear the protective equipment for a long time and cause the interference to the testing process, guarantee to correspond the accuracy in the testing process. In addition, the first sensing unit and the second sensing unit are arranged on the inner side of the protective tool, so that the problem of interference caused by error touch and the like due to external factors of the protective tool can be avoided, and the accuracy in the corresponding detection process is further improved.

In a second aspect, the present application provides a brace comprising a detection circuit and a brace housing as provided in any of the embodiments above; the first sensing unit and the second sensing unit in the detection circuit can be located on the inner side of the protective equipment shell, so that whether the protective equipment is worn correctly by a user can be accurately and efficiently detected. The above-described protectors may include means for protecting the corresponding part of the user, and usually the corresponding part may be protected after being worn by the user, for example, a helmet may protect the head of the user after being worn by the user, an elbow pad may protect the elbow of the user after being worn by the user, a goggle may protect the eyes of the user after being worn by the user, a knee pad may protect the knees of the user after being worn by the user, and the like.

Optionally, the protector may further include an alarm circuit, and when it is detected that the protector is not worn when the standard is determined, an alarm signal may be output to the alarm circuit, and the alarm circuit alarms after receiving the alarm signal, so that the user knows that the corresponding protector is not worn correctly at present.

In one embodiment, the shield shell comprises a helmet shell, in which case the shield is a helmet, and the internal detection circuitry is capable of accurately detecting whether the user is wearing the helmet correctly.

In one example, the helmet shell comprises at least one detection area inside, and the detection area is sequentially provided with a ground layer, a shielding layer, a second flexible conductor structure and a first flexible conductor structure, namely the first flexible conductor structure, the second flexible conductor structure, the shielding layer and the ground layer are sequentially arranged from the user side to the helmet shell, so that the first flexible conductor structure can generate a more accurate first induction signal, and the second flexible conductor structure can generate a second induction signal for calibrating the first induction signal.

Alternatively, the detection area may be set at a position that is convenient for detecting the wearing state of the user, such as a crown position, a forehead position and/or a back-head position corresponding to the helmet shell. Optionally, the helmet shell may further comprise a control console or a control chamber or the like for arranging the control unit.

The protective equipment comprises the detection circuit provided by any one of the embodiments, has a relatively simple structure and relatively low manufacturing cost, can efficiently and accurately detect whether a user correctly wears the corresponding protective equipment, and can improve the reliability of the protective equipment protection function.

Although the application has been shown and described with respect to one or more implementations, equivalent alterations and modifications will occur to others skilled in the art based upon a reading and understanding of this specification and the annexed drawings. This application is intended to embrace all such modifications and variations and is limited only by the scope of the appended claims. In particular regard to the various functions performed by the above described components, the terms used to describe such components are intended to correspond, unless otherwise indicated, to any component which performs the specified function of the described component (e.g., that is functionally equivalent), even though not structurally equivalent to the disclosed structure which performs the function in the herein illustrated exemplary implementations of the specification.

That is, the above description is only an embodiment of the present application, and not intended to limit the scope of the present application, and all equivalent structures or equivalent flow transformations made by using the contents of the specification and the drawings, such as mutual combination of technical features between various embodiments, or direct or indirect application to other related technical fields, are included in the scope of the present application.

In addition, the present application may be identified by the same or different reference numerals for structural elements having the same or similar characteristics. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

The previous description is provided to enable any person skilled in the art to make and use the present application. In the foregoing description, various details have been set forth for the purpose of explanation. It will be apparent to one of ordinary skill in the art that the present application may be practiced without these specific details. In other instances, well-known structures and processes are not shown in detail to avoid obscuring the description of the present application with unnecessary detail. Thus, the present application is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein.

Claims (16)

1. A detection circuit is used for detecting whether a protector is in a standard wearing state or not, and is characterized by comprising a control unit and a first sensing unit arranged on the inner side of the protector;

the first sensing unit is used for sensing corresponding first capacitance change caused by a user side, generating a first sensing signal and sending the first sensing signal to the control unit;

the control unit is used for judging whether the protective tool is in a wearing standard or not according to the first sensing signal.

2. The detection circuit of claim 1, further comprising a second sensing element disposed within the brace;

the second sensing unit is used for sensing a corresponding second capacitance change caused by the user side, generating a second sensing signal and sending the second sensing signal to the control unit;

the control unit is further configured to use one of the first sensing signal and the second sensing signal as a target signal and the other signal as a calibration signal, calibrate the target signal using the calibration signal, and determine whether the brace is worn according to the calibrated target signal.

3. The sensing circuit of claim 2, wherein the first sensing element comprises a first flexible conductor structure and the second sensing element comprises a second flexible conductor structure; the first flexible conductor structure and the second flexible conductor structure are sequentially arranged towards the protector side along the user side.

4. The detection circuit of claim 3, wherein the first flexible conductor structure comprises a first metal mesh and the second flexible conductor structure comprises a second metal mesh.

5. The detection circuit of claim 4, wherein a first mesh size of the first metal mesh is smaller than a second mesh size of the second metal mesh;

the control unit is further configured to acquire a signal difference between the first sensing signal and the second sensing signal, determine that the brace is worn according to a criterion if the signal difference is greater than or equal to a first detection threshold, and determine that the brace is not worn according to the criterion if the signal difference is less than the first detection threshold.

6. The detection circuit of claim 4, wherein a ratio of the first mesh size to the second mesh size ranges from 1:10 to 1: 15.

7. The detection circuit of claim 3, wherein the first flexible conductor structure comprises a first flexible conductor layer and the second flexible conductor structure comprises a second flexible conductor layer;

the control unit is further configured to acquire a signal difference between the first sensing signal and the second sensing signal, determine that the brace is worn according to a criterion if the signal difference is greater than or equal to a second detection threshold, and determine that the brace is not worn according to the criterion if the signal difference is less than the second detection threshold.

8. The detection circuit of claim 3, wherein the first flexible conductor structure and the second flexible conductor structure are respectively made of the same material; and/or the first flexible conductor structure and the second flexible conductor structure are insulated from each other.

9. The detection circuit of claim 3, further comprising a shielding layer; the shielding layer sets up the second flexible conductor structure with between the protective equipment side, be used for the shielding the interference that the protective equipment side caused the testing process.

10. The detection circuit of claim 9, further comprising a ground plane; the grounding layer is arranged between the shielding layer and the protector side and used for providing reference potentials corresponding to all induction signals.

11. The detection circuit of claim 10, wherein the first flexible conductor structure is aligned with the second flexible conductor structure and is located inward of an edge of the shield layer;

and/or the shielding layer is positioned inside the edge of the grounding layer.

12. The detection circuit of claim 10, wherein the shielding layer comprises a third flexible conductor layer; and/or, the ground plane comprises a fourth flexible conductor layer.

13. The detection circuit of claim 10, wherein the control unit comprises a first detection pin, a second detection pin, a shield pin, and a ground pin; the first detection pin is connected with the first flexible conductor structure, the second detection pin is connected with the second flexible conductor structure, the shielding pin is connected with the shielding layer, and the grounding pin is connected with the grounding layer.

14. A protector comprising the detection circuit of any of claims 1 to 13 and a protector housing.

15. The brace of claim 14 wherein the brace shell comprises a helmet shell.

16. The brace of claim 15 wherein the interior side of the helmet shell comprises at least one detection area having a ground plane, a shield, a second flexible conductor structure, and a first flexible conductor structure arranged in that order on the detection area.

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