CN214372539U - Non-contact measuring probe and equipment - Google Patents
Non-contact measuring probe and equipment Download PDFInfo
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- CN214372539U CN214372539U CN202120448008.XU CN202120448008U CN214372539U CN 214372539 U CN214372539 U CN 214372539U CN 202120448008 U CN202120448008 U CN 202120448008U CN 214372539 U CN214372539 U CN 214372539U
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Abstract
The utility model provides a non-contact type measuring probe and equipment relates to the automatic measurement technology field. Wherein, non-contact measurement probe includes: a housing 101; at least one light emitter 102, wherein the at least one light emitter 102 is disposed on a surface 1011 of the housing 101 for emitting light signals to a measurement object; a plurality of light receivers 103, the plurality of light receivers 103 being disposed on the surface 1011 of the housing 101 and distributed in at least two different directions around each of the light emitters 102, the plurality of light receivers 103 being configured to receive the light signals emitted by the light emitters 102 after being reflected by the measurement object. The light receivers are distributed in at least two different directions around the light emitter, so that the light receivers can effectively receive light signals reflected by the measuring object at multiple angles, and the measuring accuracy and efficiency are improved.
Description
Technical Field
The utility model relates to an automatic change and measure technical field, especially relate to a non-contact type measuring probe and equipment.
Background
Various objects, gases or equipment are commonly used in industrial processes, wherein the production equipment can be fans, machining jigs, etc. used in industrial production. In order to make the object, gas or equipment play a good role in industrial production, the parameter information of the object, gas or equipment can be determined through automatic measurement. For example, the operating state of the fan or the heat dissipation performance of the fan may be determined by measuring the rotational speed of the fan; measuring the vibration frequency and/or the vibration amplitude of the machining jig to adjust the machining performance of the machining jig; measuring the roughness of the surface of the object to produce using the object of suitable roughness; the composition of the gas is measured to monitor the content of each component in the gas in the process.
In the prior art, a measuring device usually adopts a single emitting light source and a single receiving light source, so in order to ensure the intensity of an optical signal to accurately measure the parameter information of the measuring object, a reflective label needs to be pasted on the measuring object, the measuring device needs to be perpendicular to the measuring object at a short distance to emit the optical signal to the reflective label, and the reflective label reflects the optical signal to the measuring device, so that the measuring device determines the parameter information of the measuring object according to the received optical signal. Taking the fan as an example, the fan outside has the protection network, when pasting the reflection of light label on fan flabellum, need tear the fan protection network open earlier, waits that the reflection of light label pastes the back that finishes, needs to repack the protection network, and the protection network in this fan outside also can influence the propagation of light signal simultaneously, and then has reduced measuring equipment's measurement accuracy and efficiency. The scheme has the problems of higher operation complexity, incapability of ensuring measurement precision and narrow application range.
In view of the above, it is desirable to provide a non-contact measurement probe and a non-contact measurement device, which can perform high-precision measurement of parameter information related to a measurement object without adhering a reflective label.
It is noted that the information disclosed in the background section above is only for enhancement of understanding of the background of the present disclosure, and therefore, may include information that does not constitute prior art that is known to those of ordinary skill in the art.
SUMMERY OF THE UTILITY MODEL
The utility model provides a non-contact type measuring probe and equipment for solve above-mentioned operation complexity higher, certain light hinders under the unable measuring problem.
According to the utility model discloses an aspect provides a non-contact measurement probe, include:
a housing;
at least one light emitter disposed on a surface of the housing for emitting light signals to a measurement object;
a plurality of light receivers disposed on the surface of the housing and distributed in at least two different directions around each of the light emitters, the plurality of light receivers being configured to receive light signals emitted by the light emitters after being reflected by the measurement object.
Optionally, the surface is a plane or a curved surface.
Optionally, the number of the optical transmitters is one, and the plurality of optical receivers are distributed along the edge of at least one first pattern, and the center positions of all the first patterns overlap.
Optionally, the number of the optical transmitters is multiple, and the multiple optical transmitters are distributed in at least two different directions around each of the optical receivers.
Optionally, a plurality of the light emitters are distributed along the edge of at least one second pattern, and a plurality of the light receivers are distributed along the edge of at least one first pattern, and all the first patterns and the second patterns have the same shape, different sizes and overlapped center positions.
Optionally, the first pattern and the second pattern are alternately arranged.
Optionally, the plurality of light emitters and the plurality of light receivers are arranged uniformly.
Optionally, the first pattern and the second pattern are circular, polygonal or irregular patterns.
Optionally, both the optical signal transmitted by the optical transmitter and the optical signal received by the optical receiver are invisible light.
Optionally, the method further comprises: and the filtering components are arranged in front of the light receiver and used for filtering visible light.
Optionally, the non-contact measuring probe is applied to measurement of the rotating speed of a fan, measurement of the vibration frequency and/or amplitude of a machining jig, measurement of gas components or measurement of the surface roughness of an object.
According to a second aspect of the present invention, there is provided a noncontact measuring apparatus, comprising:
a non-contact measurement probe according to any of the first aspects;
the controller is electrically connected with the non-contact type measuring probe and is used for controlling the light emitter to emit light signals and determining the information of the measuring object according to the characteristics of the light signals received by the light receiver; and
and the power supply equipment is electrically connected with the non-contact measurement probe and the controller to provide electric power support.
Optionally, the controller includes an analog-to-digital conversion unit and a calculation unit, and the optical receiver is connected to the calculation unit through the analog-to-digital conversion unit; the optical receiver is used for converting a received optical signal into an analog electrical signal, the analog-to-digital conversion unit is used for converting the analog electrical signal into a digital signal, and the calculation unit is used for determining the information of the measuring object according to the characteristics of the digital signal.
Optionally, the apparatus further includes a voice player connected to the controller, and configured to play information of the measurement object.
Optionally, the device further includes a display screen, connected to the controller, for displaying information of the measurement object.
The utility model provides a non-contact type measuring probe and equipment can receive the light signal after the measurement object reflection of light emitter transmission through a plurality of photoreceivers that are located non-contact type measuring probe surface. Because the light receivers are distributed in at least two different directions around the light emitter, the light signals reflected by the measuring object can be effectively received at multiple angles under the condition that the light reflecting label is not pasted on the measuring object, the intensity of the light signals received by the non-contact measuring probe is ensured, the influence of components (such as a protective net) in a light propagation path on the light signals is reduced, the operation complexity of measurement is reduced, and the accuracy and the efficiency of measurement are improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a front view of a non-contact measurement probe provided by the present invention;
fig. 2 to 6 are schematic distribution diagrams of light emitters and light receivers on the surface of the non-contact measuring probe provided by the present invention;
fig. 7 is a schematic structural diagram of a non-contact measuring device provided by the present invention.
Description of reference numerals:
10-a non-contact measuring device;
100-a non-contact measurement probe;
1011-a surface of a non-contact measurement probe provided with a light emitter and a light receiver;
102-a light emitter;
103-an optical receiver;
110-a controller;
1101-a calculation unit;
1102-an analog-to-digital conversion unit;
120-power supply device.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the embodiments of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be a mechanical connection; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
The utility model discloses be applied to automatic measurement technical field, can realize the automatic measurement to the parameter information of object, gas or equipment, its measurement process includes the measurement to fan speed, to the measurement of machining tool vibration frequency and/or amplitude, to the measurement of gas composition, to object roughness's measurement etc.. Thus, measurement objects include, but are not limited to: fans, machining fixtures, gases, or objects.
The structure of the noncontact measuring probe and the noncontact measuring device of the present invention will be described in detail below.
Fig. 1 is a front view of a non-contact measuring probe provided by the present invention, and fig. 2 to 6 are distribution diagrams of a light emitter and a light receiver on a surface of the non-contact measuring probe provided by the present invention. The utility model discloses a non-contact measurement probe 100, include:
a housing 101; at least one light emitter 102, wherein the at least one light emitter 102 is disposed on a surface 1011 of the housing 101 for emitting light signals to a measurement object; a plurality of light receivers 103, the plurality of light receivers 103 are disposed on the surface 1011 of the housing 101 and distributed in at least two different directions around each light emitter 102, and the plurality of light receivers 103 are used for receiving the light signals emitted by the light emitters 102 after being reflected by the measured object.
The surface 1011 of the housing 101 may be a plane or a curved surface. When the surface 1011 of the housing 101 is a plane, the shape of the surface 1011 of the housing 101 may be various shapes, for example, a circle, a polygon, or an arbitrary irregular figure. When the surface 1011 of the housing 101 is a curved surface, that is, an included angle is formed between a plane where the optical receiver 103 is located and a plane where the optical transmitter 102 is located, so that the optical signal reflected by the measurement object can be received even if the non-contact measurement probe 100 is not directly facing the measurement object.
The shape of the surface 1011 of the housing 101 may be related to the distribution of the light emitters 102 and light receivers 103. For example, when the light emitters 102 and the light receivers 103 are distributed on the edges of a circle, the surface 1011 of the housing 101 may be circular; when the light emitters 102 and the light receivers 103 are distributed on the edges of the polygon, the surface 1011 of the housing 101 may have a polygonal shape. In this way, the free area on the surface 1011 can be reduced, reducing the volume of the housing 101.
It is understood that the surface 1011 on which the light receiver 103 and the light emitter 102 are disposed faces outward so that the light signal emitted from the light emitter 102 can reach the measurement object, and the light receiver 103 can receive the light signal reflected by the measurement object. In measurement, the optical receiver 103 and the optical transmitter 102 are both directed toward the measurement object. Because the utility model discloses a plurality of photoreceiver 103 distribute on at least two different directions around light emitter 102 to photoreceiver 103 can receive a plurality of angle reflection's optical signal as far as, thereby the utility model discloses a photoreceiver 103 and light emitter 102 can not just to measuring object, can not influence measuring result in certain deviation within range promptly.
The light emitter 102 may be any device that emits a light signal, for example, the light emitter 102 may be a light-emitting diode (LED) which is commonly used. The optical signal may be visible light or invisible light.
It can be understood that when the light signal is visible light, the measurement process is more environmentally demanding. If the ambient light is strong, the light signal received by the light receiver 103 may be affected, and the light signal received by the light receiver 103 may be partially from the ambient light, resulting in poor accuracy of the measurement result. Thus, when visible light is used, it is necessary that the measurement environment does not include ambient light so that the accuracy of the measurement result can be ensured.
When the optical signal is invisible light, the influence of ambient light on the measurement result in the measurement process can be weakened. The invisible light can be infrared light, ultraviolet light, far infrared light, etc. In the present invention, the light emitter 102 is an infrared LED lamp that can emit infrared light. One infrared LED lamp can be an IR26-51C infrared LED chip which is powered by a power supply module and can emit infrared light with the wavelength of 940 nm.
It should be noted that the optical signal emitted by the optical transmitter 102 is identical to the optical signal that can be received by the optical receiver 103. When the optical signal emitted by the optical transmitter 102 is visible light, the optical signal received by the optical receiver 103 is visible light; when the optical signal emitted by the optical transmitter 102 is invisible light, the optical signal received by the optical receiver 103 is invisible light.
The optical receiver 103 is any device capable of receiving an optical signal, and a commonly used optical receiver 103 may be a photodiode, which may also be referred to as a photosensor. The utility model discloses can use OPT101 photoelectric sensor. The photosensor may convert the received optical signal into an electrical signal.
The surface 1011 of the housing 101 of the present invention is provided with at least one light emitter 102, and when there is one light emitter 102, the plurality of light receivers 103 are uniformly distributed in at least two directions around the light emitter 102; when there are a plurality of phototransmitters 102, the plurality of photoreceivers 103 are uniformly distributed around at least two directions of at least one of the phototransmitters 102, and ideally, the plurality of photoreceivers 103 are uniformly distributed around each of the phototransmitters 102 in at least two directions. As such, the light receivers 103 distributed in at least two directions around the light emitter 102 can receive the light signals reflected by the measurement object at different angles.
It is understood that when the number of the light emitters 102 is one, the plurality of light receivers 103 are distributed along the edge of at least one first pattern, and the center positions of all the first patterns overlap.
Wherein, the first pattern may be a circle, a polygon or any irregular pattern, and the light receivers 103 may be uniformly distributed on the edge of the first pattern. In the following, a circle is taken as an example, but it should be noted that the first pattern in fig. 2 or fig. 3 may also be a polygon or an arbitrary irregular pattern.
As shown in fig. 2, the first pattern is one, one optical transmitter 102 is located at the center of the first pattern, and a plurality of optical receivers 103 are uniformly distributed at the edge of the first pattern. When there is one first pattern, more light receivers 103 may be disposed at the edge of the first pattern, so that the light receivers 103 may receive the light signals reflected by the measurement object from various angles.
As shown in fig. 3, the first pattern is plural, one optical transmitter 102 is located at the center of the plural first patterns, and the plural optical receivers 103 are uniformly distributed at the edges of the plural first patterns. When the first pattern is plural, the light receivers 103 on different first patterns may be distributed in different directions of the light emitter 102, that is, any two light receivers 103 and light emitters 102 on any two first patterns are not in a straight line. As shown in fig. 3, the four photoreceivers 103 on the innermost first pattern are distributed in four directions around the phototransmitter 102, the 4 photoreceivers 103 on the middle first pattern are distributed in another 4 directions around the phototransmitter 102, and the 8 photoreceivers 103 on the outermost first pattern are distributed in another 8 directions around the phototransmitter 102, so that the photoreceivers 103 are distributed in 16 directions of the phototransmitter 102. Thus, the more directions the optical receivers 103 are distributed, the optical receivers 103 can receive optical signals with different angles and different directions as much as possible.
Alternatively, the number of the optical transmitters 102 may also be multiple, and the multiple optical transmitters 102 are distributed in at least two different directions around each optical receiver 103.
It is understood that when a plurality of optical transmitters 102 are disposed around each optical receiver 103 in different directions, the optical receiver 103 can receive the optical signals transmitted by the plurality of optical transmitters 102, and further ensure that the optical receiver 103 receives the optical signals as much as possible.
The plurality of light emitters 102 are distributed along the edges of at least one second pattern, and the plurality of light receivers 103 are distributed along the edges of at least one first pattern, all of the first pattern and the second pattern having the same shape, different sizes, and overlapping center positions.
The first graphic and the second graphic may be the same graphic. As shown in fig. 4, the first pattern may be located outside the second pattern, the edge of the first pattern distributing a plurality of light receivers 103, the edge of the second pattern distributing a plurality of light emitters 102; as shown in fig. 5, the first pattern is located inside the second pattern, the edge of the first pattern is distributed with a plurality of light receivers 103, and the edge of the second pattern is distributed with a plurality of light emitters 102. The number of optical receivers 103 and optical transmitters 102 may be the same or different, as shown in fig. 4 or 5, and the number of optical receivers 103 and optical transmitters 102 may be different. The central positions of the optical receiver 103, the optical transmitter 102, and the overlap may not be aligned, or may not be aligned.
In practical applications, each of the first pattern and the second pattern may be plural, and the plural first patterns and the plural second patterns may be alternately arranged. For example, as shown in FIG. 6, starting from the innermost layer, the first pattern-the second pattern-the first pattern-
The second pattern, etc. so iterates. Of course, it is also possible to so cycle in accordance with the second pattern-first pattern-second pattern-first pattern, and so on. In this way, the light receiver 103 and the light emitter 102 can be alternately arranged, and the light receiver 103 can receive the light signal reflected by the measured object at multiple angles as much as possible.
It can be seen that the first pattern and the second pattern in fig. 6 may be different from each other in adjacent two patterns of one pattern when they are alternately arranged. In practical applications, when the first patterns and the second patterns are alternately arranged, at least one first pattern may be continuously arranged and then at least one second pattern may be continuously arranged.
Alternatively, the plurality of light emitters 102 and the plurality of light receivers 103 are uniformly arranged.
It will be appreciated that the photo-emitters 102 and photo-receivers 103 are arranged uniformly, i.e. the distance between any two photo-emitters 102 distributed along the edge of the second pattern is comparable, and the distance between any two photo-receivers 103 distributed along the edge of the first pattern is comparable. The plurality of optical transmitters 102 are prevented from being intensively distributed in one area, and the plurality of optical receivers 103 are prevented from being intensively distributed in another area.
When the light emitters 102 are uniformly arranged, the measurement object can receive the light signals emitted by the light emitters 102 at various positions, which helps to improve the overall light intensity of the light signals reflected by the measurement object.
When the light receivers 103 are uniformly arranged, the light receivers 103 located at various positions can receive the light signals reflected by the measurement object as much as possible, which contributes to improving the overall light intensity of the light signals received by the light receivers 103.
Based on the above-described uniform arrangement of the light emitter 102 and the light receiver 103, the accuracy of the measurement result can be ensured as much as possible from two aspects.
Optionally, the first pattern and the second pattern may be a circle, a polygon, or any irregular pattern, and the first pattern and the second pattern may be the same or different.
When the optical signal is invisible light, a filtering component may be further disposed in front of the optical receiver 103 for filtering out visible light in the environment. The number of filter components may be greater than or equal to the number of optical receivers 103 to ensure that each optical receiver 103 corresponds to one or more filter components.
The filtering component can be a long-wave pass filter, and different cutoff wave bands of the long-wave pass filter are different and can be used for cutting off different visible lights. For example, a long-wave pass filter with a cut-off wavelength of 800nm can be used for filtering light with a wavelength less than 800nm, and since infrared light is provided at a wavelength of 800nm or more, the rest visible light or invisible light except the infrared light can be filtered.
It should be noted that the filtering component may be fixed in front of the light receiver 103 by a fixing device, wherein the fixing device may be a bracket.
The utility model discloses can get into light receiver 103 through visible light such as filtering part filtering ambient light, avoid the influence of visible light to measuring result, help improving measuring result's the degree of accuracy.
Alternatively, the non-contact measuring probe can be applied to measurement of the rotating speed of a fan, measurement of the vibration frequency and/or amplitude of a machining jig, measurement of gas components or measurement of the surface roughness of an object.
Fig. 7 is a schematic structural diagram of a non-contact measuring device provided by the present invention. The utility model discloses a non-contact measuring equipment 10, include: the aforementioned noncontact measuring probe 100; a controller 110 electrically connected to the non-contact measurement probe 100, for controlling the light emitter 102 to emit light signals, and determining information of the measurement object according to the characteristics of the light signals received by the light receiver 103; and a power supply device 120 electrically connected to the non-contact measurement probe 100 and the controller 110 to provide electrical support.
In order to connect the noncontact measuring probe 100 to the controller 110, a lead wire may be led out from the lower surface of the noncontact measuring probe 100 in fig. 1 to connect to the controller 110.
Wherein the information of the measurement object includes: the rotating speed of the fan, the vibration frequency and/or amplitude of the machining jig, the composition of the gas, and the roughness of the surface of the object.
The controller 110 may be referred to as a Central Processing Unit (CPU), and when the processing logic of the controller 110 is different, the information of the measurement object measured by the noncontact measurement device is different from the information of the measurement object. Only one processing logic may be integrated on the controller 110 so that one non-contact measuring device can perform a measurement of one measurement object. Various processing logics can be simultaneously integrated on the controller 110, so that one non-contact measuring device can simultaneously realize the measurement of various measuring objects. For example, a non-contact measuring device can simultaneously perform at least two measurements: the measurement of the rotational speed of the fan, the measurement of the vibration frequency and/or amplitude of the machining jig, the measurement of the gas component, and the measurement of the roughness of the object surface.
The light emitter 102, the light receiver 103, the controller 110, and the like in the above-described noncontact measuring probe 100 all require the power supply device 120 to provide power support.
Optionally, the controller 110 includes an analog-to-digital conversion unit 1102 and a calculation unit 1101, and the optical receiver 103 is connected to the calculation unit 1101 through the analog-to-digital conversion unit 1102; the optical receiver 103 is configured to convert a received optical signal into an analog electrical signal, the analog-to-digital conversion unit 1102 is configured to convert the analog electrical signal into a digital signal, and the calculation unit 1101 is configured to determine information of a measurement object according to characteristics of the digital signal.
Taking a fan as an example, when the information of the measurement object is the rotation speed of the fan, the plurality of optical receivers 103 convert the received multipath optical signals into a multipath analog electrical signal, the analog conversion unit 1102 converts the multipath analog signal into a multipath digital signal and transmits the multipath digital signal into the calculation unit 1101, the calculation unit sums the multipath digital signals and performs FFT (fast fourier transform) to convert the time domain signal into a frequency domain signal, then searches for the component with the largest amplitude in the frequency domain signal, and finally, the formula 60 fmaxN calculating the rotational speed of the fan, wherein fmaxIs the frequency corresponding to the component with the largest amplitude, and N is the number of fan blades.
The utility model discloses in, analog-to-digital conversion unit 1102 can be AD7606 type ADC chip, and for improving sensitivity and stability, AD7606 type ADC chip is 16 high accuracy ADC chips. The calculation unit 1101 may be an STM32F103RC single chip microcomputer.
The information of the measurement object determined by the computing unit 1101 may be sent to an upper computer, where the upper computer may be any device having a display screen or a voice player, so as to display the information of the measurement object through the display screen or play the information of the measurement object through the voice player; meanwhile, control parameters required by the calculation unit 1101 when determining information of the measurement object can also be set in real time through the upper computer, for example, when calculating the rotation speed of the fan, the number of fan blades is a necessary control parameter, and the control parameters can be set on the upper computer and transmitted to the calculation unit 1101.
Specifically, when the upper computer transmits the control parameter to the computing unit 1101 or the information of the measurement object is sent to the upper computer by the computing unit 1101, the computing unit 1101 and the upper computer may be connected by a USB (universal serial bus) interface, and the protocol conversion unit may convert the serial signal into a USB signal. The protocol conversion unit may be a CH340 chip.
Optionally, the contactless measuring device further comprises a voice player connected to the controller 110 for playing the information of the measuring object. So that when the information of the measurement object is transmitted to the voice player of the noncontact measurement device by the calculation unit 1101, the voice player can be connected to the calculation unit 1101 in the controller 110.
The voice player may be located inside a housing of the non-contact measurement device, and the controller 110 may send the information of the measurement object to the voice player for voice playing after determining the information of the measurement object.
The utility model discloses can interact with the user through the pronunciation player to make the user acquire measuring object's information, measuring result has improved human-computer interaction's efficiency promptly.
Optionally, the non-contact measurement device further includes a display screen, the display screen is connected to the controller 110 and is used for displaying information of the measurement object, and the display screen may be connected to the calculation unit 1101 in the controller 110.
Wherein the display screen is located on a surface of the non-contact measuring device. The controller 110 displays the information of the measurement object on the display screen in the form of an image and/or text after determining the information of the measurement object. When the information of the measurement object includes a plurality of pieces, the information of the plurality of measurement objects may be displayed in a list manner.
The utility model discloses can show the information of measurement object through the display screen to make the user can look over the information of measurement object through the display screen, improved human-computer interaction's efficiency.
The utility model provides a non-contact type measuring probe and equipment can receive the light signal after the measurement object reflection of light emitter transmission through a plurality of photoreceivers that are located non-contact type measuring probe surface. Because the light receivers are distributed in at least two different directions around the light emitter, the light signals reflected by the measuring object can be effectively received at multiple angles under the condition that the light reflecting label is not pasted on the measuring object, the intensity of the light signals received by the non-contact measuring probe is ensured, the influence of components (such as a protective net) in a light propagation path on the light signals is reduced, the operation complexity of measurement is reduced, and the accuracy and the efficiency of measurement are improved.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (15)
1. A non-contact measurement probe, comprising:
a housing;
at least one light emitter disposed on a surface of the housing for emitting light signals to a measurement object;
a plurality of light receivers disposed on the surface of the housing and distributed in at least two different directions around each of the light emitters, the plurality of light receivers being configured to receive light signals emitted by the light emitters after being reflected by the measurement object.
2. A non-contact measurement probe according to claim 1 wherein the surface is planar or curved.
3. The non-contact measurement probe according to claim 1 wherein the number of light emitters is one and the plurality of light receivers are distributed along the edges of at least one first pattern, the center positions of all the first patterns overlapping.
4. A non-contact measurement probe according to claim 1 wherein the number of light emitters is plural, the plural light emitters being distributed in at least two different directions around each of the light receivers.
5. A non-contact measurement probe according to claim 4 wherein a plurality of said light emitters are distributed along the edges of at least one second pattern and said plurality of light receivers are distributed along the edges of at least one first pattern, all of said first and second patterns being identical in shape, different in size and overlapping in centre position.
6. A non-contact measurement probe according to claim 5 wherein the first pattern and the second pattern alternate.
7. A non-contact measurement probe according to claim 5 wherein the plurality of light emitters and the plurality of light receivers are arranged uniformly.
8. A non-contact measurement probe according to claim 5 wherein the first pattern and the second pattern are circular, polygonal.
9. The non-contact measurement probe according to claim 1, wherein the optical signal transmitted by the optical transmitter and the optical signal received by the optical receiver are both invisible light.
10. The non-contact measurement probe of claim 9, further comprising: and the filtering components are arranged in front of the light receiver and used for filtering visible light.
11. The non-contact measurement probe according to claim 1, wherein the non-contact measurement probe is applied to measurement of a rotation speed of a fan, measurement of a vibration frequency and/or amplitude of a machining jig, measurement of a gas component, or measurement of a surface roughness of an object.
12. A non-contact measurement device, comprising:
a non-contact measurement probe according to any of claims 1 to 11;
the controller is electrically connected with the non-contact type measuring probe and is used for controlling the light emitter to emit light signals and determining the information of the measuring object according to the characteristics of the light signals received by the light receiver; and
and the power supply equipment is electrically connected with the non-contact measurement probe and the controller to provide electric power support.
13. The noncontact measuring device of claim 12, wherein the controller includes an analog-to-digital conversion unit and a calculation unit, the optical receiver being connected to the calculation unit via the analog-to-digital conversion unit; the optical receiver is used for converting a received optical signal into an analog electrical signal, the analog-to-digital conversion unit is used for converting the analog electrical signal into a digital signal, and the calculation unit is used for determining the information of the measuring object according to the characteristics of the digital signal.
14. The noncontact measuring device of claim 12, further comprising a voice player connected to the controller for playing information of the measuring object.
15. The noncontact measuring device of claim 12, further comprising a display screen connected to the controller for displaying information of the measurement object.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120448008.XU CN214372539U (en) | 2021-03-02 | 2021-03-02 | Non-contact measuring probe and equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120448008.XU CN214372539U (en) | 2021-03-02 | 2021-03-02 | Non-contact measuring probe and equipment |
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| CN214372539U true CN214372539U (en) | 2021-10-08 |
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- 2021-03-02 CN CN202120448008.XU patent/CN214372539U/en active Active
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