CN105091914A - Detection device and detection method - Google Patents

Abstract

The embodiment of the present invention relates to a detection device and a detection method, including: a sensor, including a plurality of sensing units and electrodes; A current is generated between the sensing unit and the correspondingly connected electrode, so that the potential of a plurality of sensing units connected between the specific sensing unit and the electrode changes; the collector includes a plurality of acquisition units, and each sensing unit corresponds to a collection unit unit, the acquisition unit is used to collect the potential signal corresponding to the potential of the sensing unit; the signal processor is used to receive the potential signal sent by the collection unit, process the potential signal, and obtain the physical signal of the collection unit that sends the potential signal and the corresponding sensing unit. position, and determine the position information between the object to be sensed and the detection device and/or the motion information of the object to be sensed according to the physical position.

Description

Detection device and detection method

technical field

The invention relates to the technical field of electronic equipment, in particular to a detection device and a detection method capable of detecting the position of a living body or a partial position of a living body, and its motion behavior.

Background technique

Biological position detection technology has been widely used in many fields such as medical treatment, sanitation, rescue, and safety monitoring. Currently commonly used biological position monitoring technologies include: infrared sensing and microwave sensing.

Infrared sensor probes work by detecting infrared rays emitted by the human body or other organisms. Concentrate the infrared radiation collected by the infrared sensor probe on the infrared sensing source. The infrared sensing source usually uses a pyroelectric element. When the temperature of this element changes when it receives infrared radiation, it releases charges outward. After processing, it can simulate location information of a human body or other living organisms. However, infrared detectors are usually mainly used to sense whether the organism enters the detection range, but it cannot accurately detect whether the organism moves or the size of the organism. Induction, the resolution is low, and the detection effect is not good.

Microwave induction is realized by using the Doppler principle of electromagnetic waves. We know that any wave has the characteristic of reflection. When a wave of a certain frequency hits an obstacle, part of the wave will be reflected back. If the obstacle is stationary, the wavelength of the reflected wave will be constant. If the obstacle If it moves toward the wave source, the wavelength of the reflected wave is shorter than that of the wave source; if the obstacle moves away from the wave source, the wavelength of the reflected wave is longer than the wavelength of the wave source. A change in wavelength means a change in frequency. Microwave sensing mainly responds to the movement of organisms, and is suitable for detecting organisms approaching or moving away from the microwave sensor at a certain speed. However, once the organism is stationary, it cannot be detected. On the other hand, microwave induction cannot detect the shape of an object.

Contents of the invention

The purpose of the present invention is to provide a detection device and a detection method for the defects of the prior art, which can accurately detect the position of the living body or the local position of the living body, and its motion behavior.

In order to achieve the above object, in a first aspect, the present invention provides a detection device, comprising:

The sensor includes a plurality of sensing units and electrodes, and each electrode is connected to a corresponding group or groups of sensing units; when the object to be sensed reaches the sensing distance of a specific sensing unit, it forms a coupling capacitance with the specific sensing unit, thereby causing the potential of the specific sensing unit to change, generating a current between the specific sensing unit and the correspondingly connected electrode, and then causing the potential of multiple sensing units connected between the specific sensing unit and the electrode to change ;

The collector includes a plurality of collection units, each of the sensing units corresponds to a collection unit, and the collection unit is used to collect a potential signal corresponding to the potential of the sensing unit;

The signal processor is configured to receive the potential signal sent by the acquisition unit, process the potential signal, obtain the physical position of the acquisition unit that sends the potential signal and the corresponding sensing unit, and determine the physical position according to the physical position. position information between the sensed object and the detection device and/or motion information of the sensed object.

Preferably, the signal processor is further configured to process the plurality of potential signals sent by the plurality of acquisition units and the information on the physical position of the acquisition unit corresponding to each of the potential signals and the corresponding sensing unit, to construct A three-dimensional shape model of the object to be sensed.

Preferably, the detection device also includes:

The insulating medium layer is arranged between each sensing unit and the corresponding collecting unit; the insulating medium layer has a set dielectric constant and thickness.

Further preferably, the inductor is specifically a sensing circuit, and the sensing circuit is printed on a flexible circuit board to form a sensing circuit layer; the collector is specifically a collection circuit, and the collection circuit is printed on a flexible circuit board to form a sensing circuit layer. The collection circuit layer; the insulating medium layer is one or more layers, and is arranged between the induction circuit layer and the collection circuit layer.

Further preferably, when the insulating medium layer is multilayer, every two layers of insulating medium layers are pasted to each other to form a multilayer insulating medium layer, and one surface of the multilayer insulating medium layer is connected to the induction circuit layer. The flexible circuit board is pasted, and the other surface of the multi-layer insulating medium layer is pasted with the flexible circuit board having the collection circuit layer.

Further preferably, on the flexible printed circuit board, the sensing circuit and the acquisition circuit are in the form of an interwoven network, and each node of the network includes an acquisition unit with a ring-shaped wiring and a columnar conductor sensing unit.

Further preferably, the acquisition unit includes an analog-to-digital converter, configured to convert the potential signal into a digital potential signal and send it to the signal processor for processing.

Further preferably, the detection device further includes a columnar or cylindrical casing covering the inductor, the insulating medium layer and the collector.

In a second aspect, an embodiment of the present invention provides a detection method, including:

Bring the object to be sensed close to the detection device, and when it reaches the range of the sensing distance, the detection device generates a current;

According to the current, the detection device changes the potential signal at different physical locations;

Process the potential signal, obtain the physical position corresponding to the potential signal in the detection device, and determine the position information between the sensed object and the detection device and/or the detected object according to the physical position. Motion information of the sensor.

Preferably, the detection method also includes:

The plurality of potential signals and the information corresponding to the physical position of each potential signal in the detection device are processed to construct a three-dimensional shape model of the sensed object.

The detection device provided by the embodiment of the present invention forms a coupling capacitance through the sensor and the object to be sensed, so that the object to be sensed can be effectively sensed when it reaches the range of the sensing distance, and causes a change in the potential of the sensor, and the collected potential signal is Processing, to determine the position information between the object to be sensed and the detection device and the motion information of the object to be sensed relative to the detection device, so as to realize the accurate detection of the position of the object to be sensed and its motion behavior.

Description of drawings

Fig. 1 is a structural block diagram of a detection device provided by an embodiment of the present invention;

FIG. 2 is a partial schematic diagram of a detection device provided by an embodiment of the present invention;

Fig. 3 is another partial schematic diagram of the detection device provided by the embodiment of the present invention;

Fig. 4 is a schematic diagram of a positional relationship between the detection device and the detected object provided by the embodiment of the present invention;

Fig. 5 is a schematic diagram of another positional relationship between the detection device and the detected object provided by the embodiment of the present invention;

6 is a schematic diagram of the working principle of the detection device provided by the embodiment of the present invention;

Fig. 7 is another partial structural schematic diagram of the detection device provided by the embodiment of the present invention;

Fig. 8 is a flow chart of the detection method provided by the embodiment of the present invention.

Detailed ways

The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

The detection device provided in this embodiment is mainly used to detect the position of the living body or the position information of the part of the living body, and the motion information of the living body or the part of the living body.

Fig. 1 is a structural block diagram of a detection device provided by an embodiment of the present invention. As shown in FIG. 1 , the detection device provided by the embodiment of the present invention includes: a sensor 1 , a collector 2 and a signal processor 3 .

The sensor 1 includes a plurality of sensing units and electrodes, and each electrode is connected to a corresponding group or groups of sensing units;

When no organism is sensed, a low-voltage AC electric field is formed in the sensor 1, and the potentials of each sensing unit are the same.

When the sensed organism or the part of the organism reaches the sensing distance of one or some sensing units in the sensor 1, due to the electric field of the organism, the organism or the part of the organism entering the sensing distance is not related to the sensing distance. The cells form coupling capacitors. In order to clearly distinguish these sensing units that sense the living body, they are referred to as specific sensing units in this application.

For high-frequency currents, capacitance is a direct conductor, so the organism (locally) draws a very small current from the specific sensing unit, causing the potential of the specific sensing unit to change. The sucked current flows out from the electrode connected to the sensing unit, so that a current is generated between the specific sensing unit and the correspondingly connected electrode, so that the potential of multiple sensing units connected between the specific sensing unit and the electrode changes.

The collector 2 includes a plurality of collection units, each sensing unit corresponds to a collection unit, and the collection unit is used to collect a potential signal corresponding to the potential of the sensing unit;

The signal processor 3 is configured to receive the potential signal sent by the acquisition unit, process the potential signal, obtain the physical position of the acquisition unit that sends the potential signal and the corresponding sensing unit in the detection device, and determine the biological body according to the physical position (local) positional information with the detection device.

When the signal processor 3 records the position information between the living body (part) and the detection device obtained at the time before and after, the movement information of the living body (part) can be known according to the change of the position information.

When a plurality of sensing units in the sensor 1 senses a living body (local), the potentials of the plurality of specific sensing units all change. At this time, the acquisition unit sends the collected potential signals of a plurality of specific sensing units to the signal processor 3, and the signal processor 3 analyzes the multiple potential signals and the corresponding acquisition unit of each potential signal and the physical position of the corresponding sensing unit The information is processed to construct a three-dimensional shape model of the sensed organism (local).

In a specific implementation, there is no direct electrical connection between the sensor 1 and the collector 2, but they are connected together by adding a layer of insulating medium layer 4 between them. The insulating medium layer 4 is configured with a specific The dielectric constant and thickness make each group of corresponding sensing units and acquisition units also form a structure of plate capacitors. When the potential of the sensing unit changes, the potential information collected by the acquisition unit also changes accordingly. Ensure that the dielectric constant and thickness of the insulating medium layer 4 between each group of corresponding sensing units and acquisition units in the detection device are the same, so as to ensure the consistency and consistency of the potential information of each group of acquisition units with the potential change of the group of sensing units sensitivity.

In a specific implementation, as shown in FIG. 2, the sensor can be specifically an induction circuit 10, which is printed on a flexible circuit board to form an induction circuit layer; the collector can be specifically a collection circuit 20, which is printed on a flexible circuit board to form a Collection circuit layer; the insulating medium layer 4 is arranged between the sensing circuit layer and the collection circuit layer to form a flexible detection circuit 5 integrated with sensors and collectors.

The insulating medium layer 4 can be a single layer or multiple layers, and the actual configuration is performed according to actual needs. The case of a single insulating dielectric layer is shown in FIG. 2 .

If it is a multilayer insulating dielectric layer, then as shown in Figure 3, each layer of insulating dielectric layer 4 is pasted to form a multilayer insulating dielectric layer 40 in sequence, and one surface of the multilayer insulating dielectric layer 40 is connected with the sensing circuit 10. The flexible circuit board is pasted together, and the other surface of the multi-layer insulating medium layer is pasted on the flexible circuit board with the acquisition circuit 20, thereby forming a flexible detection circuit 5 integrated with sensors and collectors.

The detection device provided by the present invention is mainly suitable for detecting the position and movement of a living body (partial) at a short distance, and the shape of the detection device includes but is not limited to a cylindrical shape, a columnar shape, and the like. Fig. 4 and Fig. 5 respectively show two possible shapes of the detection device, and the shapes shown are not used to limit the shape of the detection device.

The detection device shown in Figure 4 has a cuboid shell 6, the shell is an insulator, and on one of its surfaces there is an opening in the cuboid, the cross-sectional shape of the hole can be circular, oval, rectangular, square, triangular or other regular or irregular shapes.

The flexible detection circuit 5 surrounds the outside of the four vertical sides of the surface of the opening, and the organism (partial) enters the cuboid from the opening according to the direction indicated by the arrow, and when it reaches one or some sensing units of the flexible detection circuit 5 When within the sensing distance range, a current is generated in the sensing unit of the flexible detection circuit 5; the potential signal and its change at different physical positions of the flexible detection circuit 5 are detected by the detection unit, and are transmitted to the flexible circuit 5 through the signal line The connected signal processor 3 analyzes and processes the potential signal and its variation to obtain the position and movement trajectory of the living body (partial) in the detection device and the like. The position includes the spatial distance between the living body (local) and the detection device, as well as the geometrical area, shape, etc. covered (in contact with or with a certain distance) on the detection device.

The detection device shown in Figure 5 has a cylindrical shell 6, the shell is an insulator, and the flexible detection circuit 5 is surrounded on the inner wall of the outer surface of the cylinder. When the sensing distance of one or some of the sensing units is within the sensing distance range, a current is generated in the sensing unit of the flexible detection circuit 5; the potential signal and the change of the flexible detection circuit 5 at different physical positions are detected by the detection unit, and sent To the signal processor 3 connected with the flexible circuit 5, by analyzing and processing the potential signal and its variation, the position and movement trajectory of the living body (partial) in the detection device are obtained.

Still further, the potential signal sent to the signal processor 3 may be an analog signal or a digital signal. When digital signals are used for signal processing, each acquisition unit in the collector 2 also includes an analog-to-digital converter for converting the collected potential signals into digital potential signals and sending them to the signal processor 3 for processing.

On the flexible circuit board, the sensing circuit 10 and the acquisition circuit 20 may be arranged in an interwoven mesh, as shown in FIG. 6 . The longitudinal direction in the figure is the induction circuit 10, when a certain position senses a living body (local), current will be generated in all the induction circuits 10 connected between the induction circuit 10 and the electrodes. In the figure, the two points A and B are the induction positions, and the charges are replenished to the induction positions along the direction indicated by the arrow in the figure. The collection circuit 20 arranged vertically to the connection direction of the sensing circuit 10 collects the potential of each sensing unit in the sensing circuit 10 and sends it to the signal processor for processing.

FIG. 7 is a partially enlarged structural schematic diagram of the mesh nodes of the flexible circuit board.

At each node of the network, the acquisition unit 20 may be a circular wiring; the wiring includes but is not limited to solid or mesh or other forms of conductors. The sensing units 10 are columnar conductors, and a plurality of sensing units 10 in each group of sensing units are connected in series, so that a channel for supplementing charges is formed through the columnar conductors connected in series.

Further, in practical applications, the signal processor 3 may also be connected to a display device having a display function.

For example, through the display device connected to the signal processor 3, the detected position information, motion track or three-dimensional shape model of the detected organism (part) is displayed, so that the user can more intuitively observe the biological (part) Detect the motion behavior or position distribution state in (beside) the device.

Furthermore, the signal processor 3 can also be connected to an intelligent terminal device. The intelligent terminal device has a processing chip, which can analyze and process the position information and action behavior of the living body (local) sent by the signal processor 3 to generate a control signal. Control the smart terminal device to change its shape, movement direction, frequency, etc.

Therefore, the detection device of the present invention can be applied to multiple fields, such as gesture recognition in magic hats, camera obscura, animal behavior monitoring, or human intelligent products, such as masturbation sticks for women, massagers, masturbation cups for men, etc. .

The detection device provided by the embodiment of the present invention forms a coupling capacitance through the sensor and the object to be sensed, so that the object to be sensed can be effectively sensed when it reaches the range of the sensing distance, and causes a change in the potential of the sensor, and the collected potential signal is Processing, to determine the position information between the object to be sensed and the detection device and the motion information of the object to be sensed relative to the detection device, so as to realize the accurate detection of the position of the object to be sensed and its motion behavior.

Correspondingly, an embodiment of the present invention also provides a detection method, which can be implemented in the above detection device.

Fig. 8 shows the method flowchart of this detection method, as shown in the figure, described method comprises:

Step 810, bring the object to be sensed close to the detection device, and when it reaches the sensing distance range, the detection device generates a current;

Specifically, when the object to be sensed reaches the range of the sensing distance, it forms a coupling capacitance with the sensing unit that senses the object to be sensed, thereby generating a charge supplement to the sensing unit in the detection device and forming a current, thus resulting in a coupling capacitance with the sensing unit. The potential of other connected sensing units changes.

Step 820, according to the current, the detection device changes potential signals at different physical locations;

Specifically, the detection unit collects the potential information of the sensing unit to obtain the potential signal at the physical position of each detection unit.

Step 830, process the potential signal, obtain the physical position corresponding to the potential signal in the detection device, and determine the position information and/or between the sensed object and the detection device according to the physical position Motion information of the sensed object.

Specifically, if multiple potential signals are received, the multiple potential signals and the information corresponding to the physical position of each potential signal in the detection device can be processed to construct the position information and three-dimensional shape model of the object to be sensed. and action behavior. The information can also be transmitted to a display device for simulating reality, or transmitted to other smart terminals to perform corresponding actions or operations, and so on.

Professionals should further realize that the units and algorithm steps described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the relationship between hardware and software Interchangeability. In the above description, the composition and steps of each example have been generally described according to their functions. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present invention.

The steps of the methods or algorithms described in connection with the embodiments disclosed herein may be implemented by hardware, software modules executed by a processor, or a combination of both. Software modules can be placed in random access memory (RAM), internal memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other Any other known storage medium.

The specific embodiments described above have further described the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above descriptions are only specific embodiments of the present invention and are not intended to limit the scope of the present invention. Protection scope, within the spirit and principles of the present invention, any modification, equivalent replacement, improvement, etc., shall be included in the protection scope of the present invention.

Claims (10)

1. A detection device, characterized in that it comprises: The sensor includes a plurality of sensing units and electrodes, and each electrode is connected to a corresponding group or groups of sensing units; when the object to be sensed reaches the sensing distance of a specific sensing unit, it forms a coupling capacitance with the specific sensing unit, thereby causing the potential of the specific sensing unit to change, generating a current between the specific sensing unit and the correspondingly connected electrode, and then causing the potential of multiple sensing units connected between the specific sensing unit and the electrode to change ; The collector includes a plurality of collection units, each of the sensing units corresponds to a collection unit, and the collection unit is used to collect a potential signal corresponding to the potential of the sensing unit; The signal processor is configured to receive the potential signal sent by the acquisition unit, process the potential signal, obtain the physical position of the acquisition unit that sends the potential signal and the corresponding sensing unit, and determine the physical position according to the physical position. position information between the sensed object and the detection device and/or motion information of the sensed object. 2. The detection device according to claim 1, wherein the signal processor is also used for a plurality of potential signals sent by a plurality of the acquisition units and an acquisition unit corresponding to each of the potential signals and The information of the physical position of the corresponding sensing unit is processed to construct a three-dimensional shape model of the object to be sensed. 3. detection device according to claim 1, is characterized in that, described detection device also comprises: The insulating medium layer is arranged between each sensing unit and the corresponding collecting unit; the insulating medium layer has a set dielectric constant and thickness. 4. The detection device according to claim 3, wherein the sensor is specifically an induction circuit, and the induction circuit is printed on a flexible circuit board to form an induction circuit layer; the collector is specifically an acquisition circuit, The collection circuit is printed on the flexible circuit board to form a collection circuit layer; the insulating medium layer is one or more layers, and is arranged between the induction circuit layer and the collection circuit layer. 5. The detection device according to claim 4, wherein when the insulating medium layer is multilayer, every two layers of insulating medium layers are pasted to each other to form a multilayer insulating medium layer, and the multilayer insulating medium layer One surface of the layer is bonded to the flexible circuit board with the induction circuit layer, and the other surface of the multilayer insulating medium layer is bonded to the flexible circuit board with the collection circuit layer. 6. The detection device according to claim 4, characterized in that, on the flexible printed circuit board, the sensing circuit and the acquisition circuit are in an interweaving mesh, and each node of the mesh is It includes an acquisition unit with loop wiring and an induction unit with columnar conductor. 7. The detection device according to any one of claims 1-6, wherein the acquisition unit includes an analog-to-digital converter for converting the potential signal into a digital potential signal and sending it to the signal processor to process. 8 . The detection device according to claim 3 , further comprising a columnar or cylindrical shell covering the inductor, the insulating medium layer and the collector. 9 . 9. A detection method, characterized in that the method comprises: Bring the object to be sensed close to the detection device, and when it reaches the range of the sensing distance, the detection device generates a current; According to the current, the detection device changes the potential signal at different physical locations; Process the potential signal, obtain the physical position corresponding to the potential signal in the detection device, and determine the position information between the sensed object and the detection device and/or the detected object according to the physical position. Motion information of the sensor. 10. detection method according to claim 9, is characterized in that, described detection method also comprises: The plurality of potential signals and the information corresponding to the physical position of each potential signal in the detection device are processed to construct a three-dimensional shape model of the sensed object.