CN113970396A - Pressure testing method and system based on infrared distance measurement mode - Google Patents
Pressure testing method and system based on infrared distance measurement mode Download PDFInfo
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- CN113970396A CN113970396A CN202111263514.2A CN202111263514A CN113970396A CN 113970396 A CN113970396 A CN 113970396A CN 202111263514 A CN202111263514 A CN 202111263514A CN 113970396 A CN113970396 A CN 113970396A
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- 238000012360 testing method Methods 0.000 title claims abstract description 58
- 238000005259 measurement Methods 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 13
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- 239000000758 substrate Substances 0.000 description 3
- 238000007906 compression Methods 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- 230000009286 beneficial effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/24—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet
- G01L1/248—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet using infrared
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Abstract
The invention provides a pressure testing method and system based on an infrared distance measurement mode, which comprises the following steps: distance testing: controlling the infrared transmitting unit to send out an infrared signal, and calculating the deformation amount of the elastic buffer according to the infrared signal received by the infrared receiving unit; and (3) pressure testing: and calculating the pressure applied to the elastic buffer according to the deformation amount of the elastic buffer and the stress-deformation relation of the elastic buffer. The invention adopts the infrared distance measurement mode to measure the pressure, has simple and safe method, and is more suitable for children toys compared with the mode of using a pressure sensor or a piezoresistor or a strain gauge.
Description
Technical Field
The invention relates to the field of pressure testing, in particular to a pressure testing method and system based on an infrared distance measuring mode, and particularly relates to a pressure testing method and system based on an infrared testing mode and suitable for children toys.
Background
Toys are companion of children, toys with science popularization education functions are more and more on the market at present, such as children's telescopes, high-simulation automobile models and the like, and children can learn a lot of basic knowledge when playing the toys. For example, by playing or disassembling the automobile simulation model, the basic automobile driving and steering principle can be learned, and the basic structure of the automobile can be known. Some children's telescopes adopt transparent shells, can see the inside structure clearly to inside lens can be freely changed, and children can greatly cultivate children's interest in physical knowledge when playing these toys.
At present, pressure testing is generally carried out by directly testing force in the modes of a pressure sensor, a piezoresistor or a strain gauge and the like, wherein the pressure sensor has better pressure testing precision but higher cost; the piezoresistor needs to be directly stressed and has larger error; the strain gauge must be matched with strain metal for detection, so that the common force measuring mode is not suitable for children toys.
Chinese patent publication No. CN206178729U discloses a pressure sensor assembly and a human-computer interaction system using the same, wherein the pressure sensor assembly includes a measuring plate, a supporting ring, a substrate, and a sensor accommodating cavity surrounded by the measuring plate, the supporting ring, and the substrate, which are sequentially stacked from top to bottom. The pressure sensors are arranged in the sensor accommodating cavity and are arranged on the bottom surface of the measuring plate in a clinging mode, the lower ends of the pressure sensors are suspended above the substrate, and each pressure sensor senses the deformation of the measuring plate in the corresponding area and outputs signals. However, the pressure sensor assembly is complex in structure, high in cost and not suitable for children toys, and therefore a pressure testing method suitable for the children toys is needed.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a pressure testing method and system based on an infrared distance measuring mode.
The invention provides a pressure testing method based on an infrared ranging mode, which comprises the following steps:
distance testing: controlling the infrared transmitting unit to send out an infrared signal, and calculating the deformation amount of the elastic buffer according to the infrared signal received by the infrared receiving unit;
and (3) pressure testing: and calculating the pressure applied to the elastic buffer according to the deformation amount of the elastic buffer and the stress-deformation relation of the elastic buffer.
Preferably, the infrared transmitting unit and the infrared receiving unit are respectively located at two ends of the elastic buffer, or the infrared transmitting unit and the infrared receiving unit are located at one end of the elastic buffer, and a reflective layer is arranged at the other end of the elastic buffer or infrared light is reflected by a non-black plane directly.
Preferably, the elastic buffer is provided with a contact sensor, and the distance test comprises the following sub-steps:
step S1.1: the touch sensor senses the pressing operation and sends out a measurement instruction;
step S1.2: the system receives the measurement instruction, controls the infrared transmitting unit to transmit the infrared signal with a fixed period, the infrared receiving unit receives the infrared signal in real time, and the system calculates the deformation amount of the elastic buffer according to the received infrared signal.
Preferably, in the pressure testing step, the pressure change received by the elastic buffer during the deformation process is calculated according to the deformation amount of the elastic buffer calculated in real time, and the maximum pressure received by the elastic buffer is calculated at the time of the maximum deformation amount.
Preferably, the system automatically enters a sleep state if the touch sensor does not sense the pressing operation within a set time or the elastic buffer is always in a reset state.
According to the invention, the pressure testing system based on the infrared ranging mode comprises:
the distance testing module: controlling the infrared transmitting unit to send out an infrared signal, and calculating the deformation amount of the elastic buffer according to the infrared signal received by the infrared receiving unit;
a pressure testing module: and calculating the pressure applied to the elastic buffer according to the deformation amount of the elastic buffer and the stress-deformation relation of the elastic buffer.
Preferably, the infrared transmitting unit and the infrared receiving unit are respectively located at two ends of the elastic buffer, or the infrared transmitting unit and the infrared receiving unit are located at one end of the elastic buffer, and a reflective layer is arranged at the other end of the elastic buffer.
Preferably, the distance testing module comprises the following sub-modules:
module M1.1: receiving a measurement instruction sent by a contact sensor when the contact sensor is pressed;
module M1.2: and controlling the infrared transmitting unit to transmit infrared signals with fixed periods, receiving the infrared signals in real time through the infrared receiving unit, and calculating the deformation amount of the elastic buffer object according to the received infrared signals.
Preferably, when the pressure testing module is executed, the pressure change received by the elastic buffer object in the deformation process is calculated according to the deformation amount of the elastic buffer object calculated in real time, and the maximum pressure received by the elastic buffer object is calculated at the time of the maximum deformation amount.
Preferably, the system automatically enters a sleep state if the touch sensor does not sense the pressing operation within a set time or the elastic buffer is always in a reset state.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention adopts the infrared distance measurement mode to measure the pressure, has simple and safe method, and is more suitable for children toys than the mode of using a pressure sensor or a piezoresistor or a strain gauge;
2. the infrared distance measurement mode adopted by the invention is used for measuring the pressure, so that the use cost is lower;
3. in the testing method provided by the invention, the system enters the sleep mode after the elastic buffer is in the reset state for a period of time, so that the power consumption of the system can be reduced, and the service life can be prolonged.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic diagram of a reflection mode of a pressure testing method based on an infrared ranging method according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a direct mode of a pressure testing method based on an infrared distance measurement method according to an embodiment of the present invention
Fig. 3 is a schematic diagram illustrating a compression state of an elastic buffer in a pressure testing method based on an infrared distance measurement method using a reflection mode according to an embodiment of the present invention.
Description of reference numerals:
Infrared receiving unit 5 of fixed surface 2
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
The invention provides a pressure testing method based on an infrared distance measurement mode, which comprises the following steps:
distance testing: controlling the infrared transmitting unit 4 to send out an infrared signal, receiving the direct or reflected infrared signal through the infrared receiving unit 5, and calculating the deformation amount of the elastic buffer 3; the elastic buffer 3 may be a spring or rubber.
And (3) pressure testing: and calculating the pressure applied to the elastic buffer 3 according to the deformation amount of the elastic buffer 3 and the stress-deformation relation of the elastic buffer 3.
The infrared transmitting unit 4 and the infrared receiving unit 5 may be located on both sides of the elastic buffer, or may be located on the same side of the elastic buffer. In the present embodiment, the mode in which the infrared receiving unit receives the direct infrared signal is as shown in fig. 2, and in this mode, the distance between the measured surface 1 and the fixed surface 2 is measured according to the interval from the infrared transmitting unit 4 transmitting the infrared signal to the infrared receiving unit 5 receiving the infrared signal, thereby obtaining the deformation amount of the elastic buffer 3.
In more detail, a contact sensor is arranged on the elastic buffer 3, and the distance test comprises the following sub-steps:
step S1.1: the touch sensor senses the pressing operation of a person and sends out a measurement instruction;
step S1.2: the system receives the measurement instruction, controls the infrared transmitting unit 4 to transmit the infrared signal with a fixed period, the infrared receiving unit 5 receives the infrared signal in real time, and the system calculates the deformation amount of the elastic buffer 3 according to the received infrared signal. For example, the emission time of the infrared generation unit is 5s, the emission time can also be adjusted according to actual requirements, and the infrared receiving unit 5 can receive the infrared signal within 5 seconds, so that the deformation amount of the elastic buffer 3 within 5s can be calculated according to the measured infrared signal.
When the elastic buffer 3 is in the diastolic state, the distance between the measured surface 1 and the fixed surface 2 is set to be H, after the measured surface 1 is subjected to pressure, the elastic buffer 3 is stressed to deform, and at this time, the distance between the measured surface 1 and the fixed surface 2 is set to be H, as shown in fig. 3, the calculation process of the pressure F applied to the elastic buffer 3 is as follows:
F*α＝H-h
F＝(H-h)/α
α is the elastic coefficient of the elastic buffer 3.
During the pressure test, according to the deformation amount of the elastic buffering object 3 calculated in real time, the pressure change received by the elastic buffering object 3 in the deformation process is calculated, so that the compression process of the elastic buffering object 3 is restored, and the maximum pressure received by the elastic buffering object 3 is calculated at the maximum deformation amount.
And if the touch sensor does not sense the pressing operation within the set time or the elastic buffer 5 is always in the reset state, the system automatically enters the sleep state. After the external force applied to the elastic buffer 3 is removed, the infrared emission unit 4 continuously works for a period of time, whether the elastic buffer 3 is continuously in the reset state or not is measured, if yes, the system enters the dormant state, and if not, the system does not enter the reset state. When the elastic buffer is used for a long time, the reset state of the elastic buffer is changed, and the system is prevented from being in a standby state for a long time by judging whether the contact sensor senses the dormant state of the pressure control system.
In this embodiment, whether the pressing operation is sensed or not can be directly determined by the distance between the infrared transmitting unit 4 and the infrared receiving unit 5, and the deformation amount of the elastic buffer 3 is measured according to the distance, so as to measure the pressing force.
The invention also introduces a pressure testing system based on the infrared distance measuring mode, which comprises:
the distance testing module: the infrared emission unit 4 is controlled to emit an infrared signal, and the deformation amount of the elastic buffer 3 is calculated according to the infrared signal received by the infrared receiving unit 5, and the method specifically comprises the following steps:
module M1.1: receiving a measurement instruction sent by a contact sensor when the contact sensor is pressed;
module M1.2: the infrared transmitting unit 4 is controlled to transmit infrared signals with fixed periods, the infrared receiving unit 5 receives the infrared signals in real time, and the deformation amount of the elastic buffer 3 is calculated according to the received infrared signals.
A pressure testing module: and calculating the pressure applied to the elastic buffer 3 according to the deformation amount of the elastic buffer 3 and the stress-deformation relation of the elastic buffer 3.
The infrared transmitting unit 4 and the infrared receiving unit 5 are respectively located at two ends of the elastic buffer 3, or the infrared transmitting unit 4 and the infrared receiving unit 5 are located at one end of the elastic buffer 3, and a reflective layer is arranged at the other end of the elastic buffer 3.
When the pressure testing module is executed, the pressure change received by the elastic buffer 3 in the deformation process is calculated according to the deformation amount of the elastic buffer 3 calculated in real time, and the maximum pressure received by the elastic buffer 3 is calculated when the deformation amount is maximum.
And if the touch sensor does not sense the pressing operation within the set time or the elastic buffer 5 is always in the reset state, the system automatically enters the sleep state.
Those skilled in the art will appreciate that, in addition to implementing the system and its various devices, modules, units provided by the present invention as pure computer readable program code, the system and its various devices, modules, units provided by the present invention can be fully implemented by logically programming method steps in the form of logic gates, switches, application specific integrated circuits, programmable logic controllers, embedded microcontrollers and the like. Therefore, the system and various devices, modules and units thereof provided by the invention can be regarded as a hardware component, and the devices, modules and units included in the system for realizing various functions can also be regarded as structures in the hardware component; means, modules, units for performing the various functions may also be regarded as structures within both software modules and hardware components for performing the method.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (10)
1. A pressure testing method based on an infrared distance measurement mode is characterized by comprising the following steps:
distance testing: controlling an infrared transmitting unit (4) to send out an infrared signal, receiving the direct or reflected infrared signal through an infrared receiving unit (5), and calculating the deformation amount of the elastic buffer (3) according to the infrared signal received by the infrared receiving unit;
and (3) pressure testing: and calculating the pressure applied to the elastic buffer (3) according to the deformation quantity of the elastic buffer (3) and the stress-deformation relation of the elastic buffer (3).
2. The pressure testing method based on the infrared ranging mode as claimed in claim 1, wherein the pressure testing method comprises the following steps: the infrared transmitting unit (4) and the infrared receiving unit (5) are respectively positioned at two ends of the elastic buffer (3);
or the infrared transmitting unit (4) and the infrared receiving unit (5) are positioned at one end of the elastic buffer (3), and a reflective layer is arranged at the other end of the elastic buffer (3).
3. The pressure testing method based on the infrared ranging mode as claimed in claim 1, wherein the pressure testing method comprises the following steps: the elastic buffer (3) is provided with a contact sensor, and the distance test comprises the following sub-steps:
step S1.1: the touch sensor senses the pressing operation and sends out a measurement instruction;
step S1.2: the system receives the measurement instruction, controls the infrared transmitting unit (4) to transmit the infrared signal with a fixed period, the infrared receiving unit (5) receives the infrared signal in real time, and the system calculates the deformation amount of the elastic buffer (3) according to the received infrared signal.
4. The pressure testing method based on the infrared distance measuring mode as claimed in claim 3, wherein: in the pressure testing step, the pressure change received by the elastic buffering object (3) in the deformation process is calculated according to the deformation amount of the elastic buffering object (3) calculated in real time, and the maximum pressure received by the elastic buffering object (3) is calculated when the deformation amount is maximum.
5. The pressure testing method based on the infrared ranging mode as claimed in claim 3, wherein the pressure testing method comprises the following steps: and in the set time, the touch sensor does not sense the pressing operation, or the elastic buffer (3) is always in a reset state, and the system automatically enters a sleep state.
6. The utility model provides a pressure test system based on infrared range finding mode which characterized in that includes:
the distance testing module: controlling the infrared transmitting unit (4) to send out an infrared signal, and calculating the deformation amount of the elastic buffer (3) according to the infrared signal received by the infrared receiving unit (5);
a pressure testing module: and calculating the pressure applied to the elastic buffer (3) according to the deformation quantity of the elastic buffer (3) and the stress-deformation relation of the elastic buffer (3).
7. The infrared ranging manner-based pressure testing system as claimed in claim 6, wherein: the infrared transmitting unit (4) and the infrared receiving unit (5) are respectively located at two ends of the elastic buffer (3), or the infrared transmitting unit (4) and the infrared receiving unit (5) are located at one end of the elastic buffer (3), and a light reflecting layer is arranged at the other end of the elastic buffer (3).
8. The infrared ranging manner-based pressure testing system as claimed in claim 6, wherein: the distance testing module comprises the following sub-modules:
module M1.1: receiving a measurement instruction sent by a contact sensor when the contact sensor is pressed;
module M1.2: the infrared transmitting unit (4) is controlled to transmit infrared signals with fixed periods, the infrared receiving unit (5) receives the infrared signals in real time, and the deformation amount of the elastic buffer (3) is calculated according to the received infrared signals.
9. The infrared ranging manner-based pressure testing system as claimed in claim 8, wherein: when the pressure testing module is executed, the pressure change received by the elastic buffering object (3) in the deformation process is calculated according to the deformation amount of the elastic buffering object (3) calculated in real time, and the maximum pressure received by the elastic buffering object (3) is calculated when the deformation amount is maximum.
10. The infrared ranging manner-based pressure testing system as claimed in claim 8, wherein: and if the touch sensor does not sense the pressing operation within the set time or the elastic buffer (5) is always in a reset state, the system automatically enters a sleep state.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111263514.2A CN113970396A (en) | 2021-10-28 | 2021-10-28 | Pressure testing method and system based on infrared distance measurement mode |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111263514.2A CN113970396A (en) | 2021-10-28 | 2021-10-28 | Pressure testing method and system based on infrared distance measurement mode |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105583127A (en) * | 2014-10-23 | 2016-05-18 | 无锡桥阳机械制造有限公司 | Coating interval adjusting device |
| CN105823586A (en) * | 2016-03-17 | 2016-08-03 | 广东欧珀移动通信有限公司 | Grip strength test method and device based on mobile terminal and mobile terminal |
| CN207506647U (en) * | 2017-04-01 | 2018-06-19 | 西安医学院 | A kind of measuring apparatus for anatomic type row's tooth experiment |
| DE202018103377U1 (en) * | 2018-06-15 | 2019-09-17 | Conscience Analytics Gmbh | force sensor |
| CN213427733U (en) * | 2020-10-15 | 2021-06-15 | 南京帝盟科技有限公司 | Pet toy |
| CN113447188A (en) * | 2021-05-31 | 2021-09-28 | 上海交通大学 | Sea wave slamming load actual measurement device and method |
-
2021
- 2021-10-28 CN CN202111263514.2A patent/CN113970396A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105583127A (en) * | 2014-10-23 | 2016-05-18 | 无锡桥阳机械制造有限公司 | Coating interval adjusting device |
| CN105823586A (en) * | 2016-03-17 | 2016-08-03 | 广东欧珀移动通信有限公司 | Grip strength test method and device based on mobile terminal and mobile terminal |
| CN207506647U (en) * | 2017-04-01 | 2018-06-19 | 西安医学院 | A kind of measuring apparatus for anatomic type row's tooth experiment |
| DE202018103377U1 (en) * | 2018-06-15 | 2019-09-17 | Conscience Analytics Gmbh | force sensor |
| CN213427733U (en) * | 2020-10-15 | 2021-06-15 | 南京帝盟科技有限公司 | Pet toy |
| CN113447188A (en) * | 2021-05-31 | 2021-09-28 | 上海交通大学 | Sea wave slamming load actual measurement device and method |
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