TWI490518B - A sensing system that detecting the location of the trigger - Google Patents

Description

Sensing system capable of detecting the position of a trigger point

The present invention relates to a sensing system, and more particularly to a sensing system that utilizes a simple hose structure and senses the position of the trigger point by the transmission of pressure waves.

With the gradual advancement of technology, electronic devices such as surveillance systems, anti-theft warning systems, etc. have been widely used by the public, and sensor devices are installed in the range to be protected, but in view of the wide geographical scope, in order to install Such sophisticated electronic sensing devices must be extremely costly.

Farmers work hard all year round. For a wide range of farmland, orchards, etc., they often suffer losses due to theft before harvest. In order to prevent theft, in the past, fences and fences were used to prevent intruders from entering, but It does not solve the problem effectively.

In addition, a common electronic sensing device is installed on the top of the wall outside the house. Even if the intruder is sensed, it is difficult to report the intruder's intrusion into the precise position, which makes it impossible to perform effective processing in the first time. Effectively avoid losses.

In view of these shortcomings, the inventor of the present invention has specially researched and improved the sensing device, and after many experiments and tests, the invention is finally completed, and the application is filed according to law.

The main object of the present invention is to provide a sensing system capable of detecting the position of a trigger point, and the position of the trigger point can be judged by a simple hose structure and by means of micro pressure sensing, and can be widely applied to various sizes. Different sensing areas and significant cost savings.

Another object of the present invention is to provide a sensing capable of detecting the position of a trigger point The system can easily set the hose for sensing in various environments, has certain concealability, and has a wide application level; even, common agricultural land, or PVC water pipes for watering in orchards, gardens, etc. It can be used to irrigate crops in peacetime, and it can be activated when not in use to prevent invisible.

For the above purpose, the sensing system for detecting the position of the trigger point of the present invention has a main structure and a technical means thereof including an elastic hollow tube body, a sensing device and a central processing device; wherein the elastic hollow The inside of the pipe body is filled with a fluid medium, and the fluid medium maintains a predetermined pressure. When the elastic hollow pipe body is pressed by an external force, a trigger point is formed at the pressing position, and the fluid medium is generated from the trigger point. The pressure changes and forms a pressure wave traveling in the tube; the sensing device comprises at least one micro pressure sensing unit disposed in the elastic hollow tube body for sensing the pressure change caused by the triggering of the fluid medium The pressure wave generates a signal; the central processing device is telecommunicationally connected to the micro pressure sensing unit for receiving the signal generated by the micro pressure sensing unit, and calculating the pressure change, the distance, the speed and the time by analyzing to determine the trigger point The location.

Thereby, the hose structure formed by the elastic hollow pipe body can be set in the area to be sensed according to the use requirement, and can be matched with the environmental background, and has certain concealing property, when the intruder touches the elastic hollow pipe. When the body is in the body, pressure waves are generated in the elastic hollow tube body, and the sensing position of the micro pressure sensing unit and the analysis and calculation of the central processing device can report the precise position of the trigger point to the user at the first time.

Preferably, the two ends of the elastic hollow tube body are respectively provided with a closed unit, and the micro pressure sensing unit can be disposed at one end of the elastic hollow tube body or combined with one of the closed units.

Preferably, the two ends of the elastic hollow tube are respectively provided with a closed unit, the sensing device comprises two micro-pressure sensing units, and the two micro-pressure sensing units are respectively disposed in the elastic hollow tube body. The ends are respectively coupled to the two closed units.

Preferably, the sensing device comprises a plurality of micro-pressure sensing units, and the micro-pressure sensing units are disposed at a distance from each other in the elastic hollow tubes.

Preferably, the sensing system of the present invention for detecting the position of the trigger point may further include a plurality of connecting units for respectively connecting the elastic hollow tube body, extending, branching or forming the annular body, and each of the elastic hollow tubes The micro pressure sensing unit can be respectively combined with the connecting units, The connection of the connecting units can extend, branch or form a ring body by connecting a plurality of elastic hollow tubes according to the size of the use area.

Preferably, the preset pressure system is greater than the pressure outside the elastic hollow tube for appropriately expanding the elastic hollow tube body, so as to prevent the unexpanded hose from absorbing a relatively large number of pressure waves, resulting in poor pressure wave transmission.

Preferably, the elastic hollow tube body is further connected with a pressure control device for controlling the pressure in the elastic hollow tube to maintain the preset pressure, thereby maintaining the transmission of the pressure wave in an optimal state.

Preferably, the pressure control device comprises a pressure detecting unit, a temperature detecting unit and an increasing and reducing unit.

Preferably, the central processing device analyzes the pressure of the trigger point by the micro-pressure sensing unit through a known distance between the micro-pressure sensing units and a time required for the pressure wave to pass the known distance. The time difference between successive waves to determine the position of the trigger point

Preferably, the central processing unit can further electrically connect a display unit to display the position of the trigger point, so that the user can intuitively know the geographical position of the trigger point through the display unit.

Preferably, the central processing device is connected to the micro pressure sensing unit via a line, and the circuit is disposed in the wall of the elastic hollow tube or in the elastic hollow tube; thereby, preset The pressure can form an effective protection. When the intruder wants to destroy the line or the elastic hollow tube body, the hole in the wall of the elastic hollow tube body first causes a pressure loss in the tube, and triggers an alarm that the preset pressure is insufficient.

For a better understanding of the features of the present invention, the preferred embodiments of the present invention are described below, and the structure, principle, function and function of the present invention are described in detail below with reference to the drawings and drawings.

10‧‧‧Flexible hollow body

11‧‧‧ Fluid media

A‧‧‧ trigger point

B‧‧‧ Pressure Wave

20‧‧‧closed unit

R‧‧‧reflecting surface

21‧‧‧ Connection unit

30‧‧‧Sensing device

31‧‧‧Micro Pressure Sensing Unit

32‧‧‧ lines

40‧‧‧Central processing unit

50‧‧‧ Pressure control device

51‧‧‧Pressure detection unit

52‧‧‧Temperature detection unit

53‧‧‧Environment and decompression unit

60‧‧‧ Warning device

61‧‧‧Bee unit

62‧‧‧Display unit

70‧‧‧ elevated water tower

1 is a block diagram of a system architecture of an embodiment of the present invention; and FIG. 2 is a schematic diagram of pressure wave transmission in an elastic hollow tube of the present invention; 3 is a schematic cross-sectional structural view of an elastic hollow tubular body according to a first preferred embodiment of the present invention; FIGS. 3A to 3D are schematic diagrams showing a pressure wave transmitting process according to a first preferred embodiment of the present invention; FIG. 4A to FIG. 4B are schematic diagrams showing a pressure wave transmission process according to a second preferred embodiment of the present invention; FIG. 5 is a preferred embodiment of the present invention; BRIEF DESCRIPTION OF THE DRAWINGS FIG. 5A and FIG. 5B are schematic cross-sectional views of a connecting unit which is a three-way and a four-way, and FIG. 6 is a schematic view of another preferred embodiment of the present invention. FIG. 7 is a schematic view showing the extension and branching of the elastic hollow pipe body and the connecting unit according to still another preferred embodiment of the present invention; FIG. 8 is a preferred embodiment of the present invention. Schematic diagram of the practical application of the elastic hollow pipe joint extension and branching.

Please refer to FIG. 1 and FIG. 2 , which are respectively a block diagram of a system architecture and a pressure wave transmission in an elastic hollow tube according to an embodiment of the present invention. It can be seen that the sensing system capable of detecting the position of the trigger point of the present invention mainly includes an elastic hollow tube body. 10. A sensing device 30 and a central processing device 40.

The elastic hollow tube 10 is filled with a fluid medium 11 and the fluid medium 11 is maintained at a predetermined pressure, and the predetermined pressure is greater than the pressure outside the elastic hollow tube 10, when the elastic hollow tube 10 is squeezed by an external force. When the pressure is pressed, a trigger point A is formed at the pressing position, and the fluid medium 11 generates a pressure change from the trigger point A, and a pressure wave B is formed to travel in the tube. The fluid medium 11 can be selected according to the use requirement. The sensing device 30 includes at least one micro-pressure sensing unit 31 disposed in the elastic hollow tube 10 for sensing the pressure wave B transmitted from the trigger point A and generating a signal; The central processing unit 40 is connected to the micro-voltage sensing unit 31 for receiving the signal generated by the micro-pressure sensing unit, and analyzing and calculating the pressure change, the distance, the speed and the time to determine the position of the trigger point.

The principle of the invention mainly utilizes an elongated elastic hollow pipe body 10, When the tube wall is squeezed (i.e., the trigger point A), a pressure wave is formed in the tube toward both sides. This travel is a pressure wave B conducted in the fluid medium 11, and the fluid in the elastic hollow tube 10 The medium 11 is a single fluid medium 11, and the micro-pressure sensing unit 31 senses the time difference generated by the arrival of the pressure wave by using the principle that the pressure wave travels in the same medium (speed, distance, time) to analyze and calculate. The position of the trigger point A is displayed.

The central processing unit 40 analyzes the manner of calculating the position of the trigger point A, and further introduces the configuration of the two types of elastic hollow tube 10 and the micro-pressure sensing unit 31 as shown in FIG. 3, which is the first comparison of the present invention. A schematic diagram of the structure of the elastic hollow tube body, which is a structure for sensing by a single micro-pressure sensing unit 31, and a closed unit 20 is disposed at both ends of the elastic hollow tube body 10, and the micro-pressure sensing unit 31 is provided. In one end of the elastic hollow pipe body 10, or in one of the closing units 20, in this embodiment, the micro pressure sensing unit 31 is coupled to the closed unit 20 on the left side, and the closed unit 20 on the right side is available. A highly reflective material that becomes a reflective end R. The manner of calculating the trigger point is analyzed. As shown in FIGS. 3A to 3D, the length of the elastic hollow tube 10 is known to be 150 m, which is preceded by the left end of the elastic hollow tube 10 when the system is corrected and set. Manually triggering to create a pressure wave that immediately reaches the timing function of the micro-pressure sensing unit 31 to activate the system. The pressure wave is sent from the left end of the elastic hollow tube 10 to the reflective end R and then returned to the micro-pressure sensing. In the unit 31, when the micro-pressure sensing unit 31 senses the signal, the timing is stopped, and the recorded time, that is, the time taken when the total distance of the pressure wave is 300 m, is assumed to be 30 unit time. Therefore, it can be known that the pressure wave can transmit a distance of 10 m per unit time; and when the intruder triggers from the trigger point A, the pressure wave B is formed to be transmitted to both sides, and the micro pressure sensing unit 31 first senses the first When the pressure wave B is secondary (that is, the pressure wave B traveling to the left when the trigger point A is triggered), that is, the signal is sent to the central processing unit 40 (this is the start timing signal), and then the pressure wave B traveling to the right side of the trigger point A is triggered. Rebound and return back through the reflective end R The pressure sensing unit 31 sends a second signal to the central processing unit 40 (this is the end timing signal). The time difference recorded by the two signal intervals is assumed to be twenty-two unit time, and the folding back can be calculated. The pressure wave B travels a distance of 220 m more than the unfolded pressure wave B, and the difference between the total distance of the pressure wave and the back of the pressure wave is 300 m, which is twice the distance between the trigger point A and the micro pressure sensing unit 31. The position at which the trigger point A is calculated is located on the right side of 40 m from the micro pressure sensing unit 31.

In the actual operation, in order to prevent the trigger point A from approaching the reflection end R during the actual operation, the pressure wave B directly traveling and the reflected pressure wave B form an overlapping wave to generate an interpretation problem, and may be disposed near the reflection end R. A hard tube that cannot be triggered, so that the reflected pressure wave B has to travel farther than the directly traveling pressure wave B, increasing the travel time and avoiding the overlap of the two waves; further, through the hard near the reflection end R The tube can also make the hard tube and the reflection end R appear perpendicular, effectively improving the reflection effect.

4 is a schematic structural view of an elastic hollow tubular body according to a second preferred embodiment of the present invention, which is a structure that is sensed by a double micro-pressure sensing unit 31. In this structure, it is attached to an elastic hollow. The two ends of the tubular body 10 are respectively provided with a closed unit 20, and the two micro-pressure sensing units 31 can be respectively disposed at two ends of the elastic hollow pipe body 10 or respectively coupled to the two closed cells 20, where In the embodiment, the micro pressure sensing unit 31 is respectively coupled to the closing unit 20. As shown in FIGS. 4A and 4B, the length of the elastic hollow pipe body 10 is known to be 300 m. When the system is corrected and set, the pressure wave is manually triggered before the left end of the elastic hollow pipe body 10, The pressure wave immediately reaches the timing function of the starting system of the left micro-pressure sensing unit 31, and the pressure wave is transmitted from the left end of the elastic hollow tube 10 to the right micro-pressure sensing unit 31, when the right micro-pressure sensing unit 31 senses After the signal is detected, the timing is stopped, and the recorded time is the time taken when the total distance traveled by the pressure wave is 300 m. It is assumed that the measured time is fifteen unit time, so that the distance transmitted by the pressure wave per unit time is 20m; when the intruder triggers from the trigger point A, the pressure wave B is formed to be transmitted to both sides. When the micro pressure sensing unit 31 on the left side senses the pressure wave B, the signal is sent to the central processing unit 40 (this is Start timing signal), then when the right micro pressure sensing unit 31 senses the pressure wave B, the same signal is sent to the central processing unit 40 (this is the end timing signal), and the time difference of the pressure wave B is transmitted to the left to the right. , assumed to be In unit time, it can be calculated that the pressure wave B on the right side travels a distance of 140 m more than the pressure wave B on the left side, and the difference between the distance and the second micro pressure sensing unit 31 is 300 m, which is the trigger point A and the left side micro The sensing unit 31 is twice the distance, so it can be calculated that the trigger point A is located at a distance of 80 m to the right of the left micro-pressure sensing unit 31.

In practical applications, the pressure wave B travels gradually in the elastic hollow pipe body 10, so that when the use environment is large, the micro pressure sensing unit 31 can be disposed through every effective interval or the connection unit 21 can be further used. Extend the length of the hose to meet the needs of use, and As a result of numerous experiments by the inventors in a normal environment, when the fluid medium 11 is a gas, the effective effective distance can be more than 300 meters. In the following, through the foregoing principles of the present invention and the application of the two embodiments, two preferred embodiments of the present invention are further disclosed in the practical application: as shown in FIG. 5 and FIG. 6, the user can according to the environmental scope. The size is three or more micro-pressure sensing units 31, which are disposed at a distance from each other in the elastic hollow tube body 10 which is connected to the annular body, regardless of the trigger point A located at any position of the elastic hollow tube body 10. The position of the trigger point A is accurately analyzed and calculated by the time difference generated by the pressure wave B reaching the two nearest micro-pressure sensing units 31.

Please refer to FIG. 5A, FIG. 5B and FIG. 7 together. According to the special needs of the use environment, the connecting unit 21 can be further used as a three-way, four-way or multi-pass way to extend the elastic hollow pipe body 10 and The branch is tapped and sensed for a specific area; and when the trigger point A is triggered, the pressure wave B extends from the trigger point A along the elastic hollow tube 10 to both sides, using the closest two micro-pressure sensing The unit 31 sequentially senses the time difference of the signal generated by the pressure wave B, and analyzes and calculates the position of the trigger point A through the central processing unit 40.

In the actual operation of the various embodiments of the present invention, the elastic hollow tube body 10 is first cut off, the micro-pressure sensing unit 31 is placed, and then the disconnected elastic hollow tube body 10 is joined or branched by the connecting unit 21, Alternatively, as shown in FIGS. 5, 5A, and 5B, the micro pressure sensing unit 31 may be coupled to the connection unit 21. Moreover, the micro-pressure sensing device 31 is connected to the central processing device 40 via a line 32, and in order to properly protect the line 32 from damage, the line 32 can be disposed on the wall of the elastic hollow tube 10. The middle portion is disposed in the elastic hollow pipe body 10.

For different seasons and climates, the pressure in the tube of the elastic hollow pipe 10 will be affected, and different pressures will affect the speed of the pressure wave B. In view of this, in order to maintain the preset state in the elastic hollow pipe body 10 The pressure control device 50 can be further connected to the elastic hollow tube body 10 and connected to the central processing unit 40. The pressure control unit 50 includes a pressure detecting unit 51 and a temperature detecting unit 52. An increase and decrease unit 53 is added. The pressure detecting unit 51 may include an internal pressure detecting unit and an external pressure detecting unit for detecting the pressure inside and outside the elastic hollow tube 10 and transmitting the detected signal to the central processing unit. 40; temperature detecting unit 52 is used to detect the temperature outside the pipe body, and will detect The signal is transmitted to the central processing unit 40; the voltage increasing and decompressing unit 53 is a control signal for receiving the central processing unit 40 for controlling the pressure of the elastic hollow tube 10 to be maintained at the preset pressure.

Referring to FIG. 8 again, it is a schematic diagram applicable to a conventional farmland or orchard. The connecting unit 21 and the micro-pressure sensing unit 31 are used to connect the elastic hollow tube 10 in the farmland laterally and longitudinally. Extending or branching, and connecting one of the ends to the water supply of the elevated water tower 70 to obtain water pressure (to make the fluid medium 11 in the elastic hollow pipe body 10 have a preset pressure), so that the user can directly use the elastic hollow pipe during irrigation The body 10 is watered, and in normal times (when not being watered), the sensing system is turned on, and the elastic hollow tube 10 distributed in the farmland is used as an inductor.

The embodiment shown in Fig. 6 can be applied to the top of the wall outside the house. When the intruder climbs over the wall, the elastic hollow pipe 10 will form a trigger point A by pressing the foot, and the user will get the first time. Knowing the exact location of the intrusion, there is enough time to cope.

In order to effectively improve the convenience of use, the central processing unit 40 can further be connected to a warning device 60. The warning device 60 can include a buzzing unit 61 and a display unit 62 for receiving the warning signal sent by the central processing unit 40. In order to allow the user to grasp the situation in real time, the display unit 62 can display a simple map of the sensing area, and display the trigger point A in the simple map by means of a light signal or the like to provide the user with the first time. Get the complete picture right away, and intuitively understand the location of trigger point A relative to your surroundings through a simple map.

The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention. That is, the equivalent changes and modifications made by the scope of the present invention are covered by the scope of the present invention.

30‧‧‧Sensing device

31‧‧‧Micro Pressure Sensing Unit

40‧‧‧Central processing unit

50‧‧‧ Pressure control device

51‧‧‧Pressure detection unit

52‧‧‧Temperature detection unit

53‧‧‧Environment and decompression unit

60‧‧‧ Warning device

61‧‧‧Bee unit

62‧‧‧Display unit

Claims (10)

A sensing system capable of detecting a position of a trigger point, comprising: an elastic hollow tube body filled with a fluid medium, wherein the fluid medium maintains a predetermined pressure, and the elastic hollow tube body is pressed by an external force Forming a trigger point at the pressing position, and the fluid medium generates a pressure change from the trigger point, and forms a pressure wave to travel in the tube; a sensing device includes at least one micro pressure sensing unit, Provided in the elastic hollow tube body for sensing a pressure wave formed by the pressure change of the fluid medium and generating a signal; a central processing device electrically connecting the micro pressure sensing unit to receive the micro pressure sense The signal generated by the measuring unit is used to sense the time difference of the arrival of the pressure wave by using the micro pressure sensing unit, thereby analyzing and calculating the position of the trigger point. The sensing system for detecting the position of the trigger point according to claim 1, wherein each of the two ends of the elastic hollow tube body is provided with a closed unit, and the micro pressure sensing unit is disposed in the elastic hollow tube body. One end, or combined with one of the closed units. The sensing system for detecting a position of a trigger point according to claim 1, wherein each of the two ends of the elastic hollow tube body is provided with a closed unit, the sensing device comprises two micro-pressure sensing units, and the two micro-pressures The sensing units may be respectively disposed at two ends of the elastic hollow tube body or respectively coupled to the two closed units. The sensing system of claim 1, wherein the sensing device comprises a plurality of micro-pressure sensing units, and each of the micro-pressure sensing units is disposed at a distance from each other to the elastic hollow tubes. in vivo. The sensing system for detecting the position of the trigger point according to claim 4, further comprising a plurality of connecting units for respectively connecting the elastic hollow tube body to extend, branch or form the annular body, and Each micro pressure sensing unit is respectively coupled to the connecting units. The sensing system for detecting a position of a trigger point according to any one of claims 1 to 5, wherein the preset pressure system is greater than a pressure outside the elastic hollow tube. The sensing system for detecting the position of the trigger point according to claim 6, wherein the elastic hollow tube body is further connected with a pressure control device for controlling the pressure in the elastic hollow tube to maintain the preset pressure. The sensing system for detecting a position of a trigger point according to claim 7, wherein the pressure control device comprises a pressure detecting unit, a temperature detecting unit and an increasing and decreasing unit. A sensing system capable of detecting a position of a trigger point according to claim 6, wherein the central processing device transmits a known distance between the micro-pressure sensing units and a time required for the pressure wave to pass the known distance And analyzing the time difference between the respective micro-pressure sensing units sensing the pressure waves of the trigger point to determine the position of the trigger point. The sensing system for detecting a position of a trigger point according to claim 1, wherein the central processing device is connected to the micro pressure sensing unit via a line, and the circuit is disposed on a wall of the elastic hollow tube body. Or in the elastic hollow tube body.