Sheet type micro distance measuring device

Abstract

The utility model discloses a slice type micro distance measuring device, which comprises a shell, a groove is arranged on the shell, a shifting piece is rotatably arranged in the groove, a micro grating ruler is embedded in the shell, and the thickness of the device is reduced by the design that the shifting piece drives the micro grating ruler, so that the application range of the device is wider. The utility model relates to the technical field of automobile micro distance measurement, the thickness of equipment is reduced by driving a macro displacement sensor through a shifting piece, a measuring probe and an equipment main body are connected through a connecting line to transmit voltage signals, and a corresponding voltage value is obtained according to the resistance change of the macro displacement measuring sensor. And the digital quantity corresponding to the voltage is converted through the single chip microcomputer. The corresponding displacement distance is obtained by calculating the digital quantity, and the test data is transmitted to the upper computer through the wireless transmission module according to the obtained displacement. And software of the upper computer is an app based on Android. According to the measurement system, one host can be connected with multiple devices at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile micro-distance measurement, in particular to a thin-sheet micro-distance measuring device. Background Art

[0002] For gap measurement, the main existing measuring tool is the vernier caliper. After the vernier caliper is inserted into the gap, the inner measuring claws need to be manually adjusted to support both sides of the gap. In most cases, the vernier caliper needs to be taken out of the gap for reading. During the adjustment and removal process, the inner measuring claws may be touched, causing their position to change and thus affecting the measurement results; different forces applied during measurement will cause insufficient repeatability of the readings; and this process is time-consuming and laborious. Vernier caliper reading, especially mechanical reading, requires training, and needs to be identified with the naked eye, which takes a long time to read and is prone to errors. Vernier caliper readings usually need to be recorded manually, which greatly increases the workload and time, and manual entry has the risk of recording errors. The various deficiencies of vernier calipers in gap measurement applications are mainly due to the fact that all processes are manually operated. The operator's operating habits, operating force, proficiency, physical and mental state will have a great impact on the reading and recording of the results. Therefore, its measurement accuracy and repeatability cannot be reliably guaranteed, and the measurement speed and recording accuracy are even more difficult to meet the needs of the current market.

[0003] With the emergence of new technologies such as intelligent networking and the Internet of Things, automobile assembly methods are rapidly developing in the direction of electronics and intelligence, and automobile measurement is also developing.

[0004] The thin-film type macro distance measurement sensor is a device used to replace the traditional door gap measurement device in the car. As a new idea, the thin-film type macro distance measurement sensor uses the sensor to measure wirelessly through the wireless network and drives the micro grating ruler through the paddle to reduce the thickness of the equipment. Compared with the traditional measurement method, it is more convenient, more accurate and has a wider range of applications. It also reduces the errors caused by manual testing by operators. Utility Model Content

[0005] In view of the deficiencies of the prior art, the utility model provides a thin-sheet micro-distance measuring device, which solves some of the existing background technical problems.

[0006] To achieve the above purpose, the utility model is implemented by the following technical solutions: the thickness of the device is reduced by driving the macro displacement sensor with a paddle, the corresponding voltage is obtained according to the change of the resistance value of the macro displacement sensor, and the voltage is converted by a single-chip microcomputer to obtain the corresponding AD value. The corresponding displacement distance is obtained by calculating the AD value, and the obtained displacement value is then transmitted to the host computer through a wireless network. The software of the host computer is an Android-based app, and one host can connect to multiple devices at the same time. The device can be connected to the host through a router or directly connected to the host through the host hotspot. During the test, when the host clicks to obtain the measurement data, the measurement value of the connected device can be obtained. At the same time, the device can also perform its own network connection diagnosis, and if an abnormality is found, it can connect to the host by itself. At the same time, the host computer also monitors the connection status of the device. If it is found that the device has no response, it will prompt the user to check the device.

[0007] To achieve the above purpose, the utility model is implemented through the following technical solutions: a thin-sheet micro-distance measuring device, which includes a shell, a groove is opened on the shell, a paddle is rotatably installed in the groove, and a micro grating ruler is embedded in the shell. The design of using the paddle to drive the micro grating ruler reduces the thickness of the device and makes the device more applicable.

[0008] Preferably, the paddle includes a rotating shaft, which is rotatably arranged in the groove, and a connecting rod is integrally formed on the outer upper side of the rotating shaft, and the connecting rod coincides with the top view projection of the groove, and the connecting rod is at an oblique angle to the horizontal direction. The groove is parallel to the sliding end of the micro grating ruler, and a toggle portion is integrally formed on the lower side of the rotating shaft, and the toggle portion is cylindrical.

[0009] Preferably, a plurality of first circular holes are opened on the outer wall of the shell and located on the lower side of the groove, and a pad is installed on the outer wall of the shell and located on the front side or the rear side of the groove, and the pad is connected to the shell by bolts, and the left view of the pad is "L" shaped, and a plurality of second circular holes are opened on the lower side of the pad, and the opening direction of the second circular holes is perpendicular to the first circular holes.

[0010] Preferably, a cover plate is embedded on the lower side of the shell and on the side away from the paddle, and a plurality of wiring ports are formed between the cover plate and the shell.

[0011] A thin-sheet micro-distance measuring device comprises the following steps:

[0012] Several measuring terminals, a transfer terminal and a host terminal are provided, wherein the several measuring terminals are the thin-film micro-distance measuring devices, the transfer terminal is a router, and the host terminal is a smart tablet or a smart phone;

[0013] Place sensors and fixtures according to the measuring range to produce suitable thin-sheet macro measurement equipment;

[0014] The host terminal simultaneously establishes a network connection with a plurality of the measuring terminals, the host terminal establishes a network connection with the measuring terminal through the transfer terminal, or skips the transfer terminal and directly establishes a network connection with the measuring terminal;

[0015] Perform network connection diagnosis on the measuring end, and reconnect to the host end if an abnormality is found;

[0016] According to the change of the resistance value of the micro-displacement measurement sensor, the corresponding voltage value V is obtained;

[0017] The corresponding displacement distance is calculated by the voltage value V.

[0018] Preferably, calculating the corresponding displacement distance by the voltage value V comprises the following steps:

[0019] Use the standard block to obtain the corresponding relationship between the voltage value V and the standard value, and record the measured value of the test equipment when using the standard measuring block. The standard value in the standard block is the ordinate, and the measured value is the corresponding abscissa;

[0020] Based on the data obtained by the above method, the measured value is calculated by linear interpolation;

[0021] Establish a formula for linear interpolation measurement displacement:

[0022] Y =Y1 + (Y2-Y1)*(X-X1) / (X2-X1);

[0023] Among them, X1 and X2 are the horizontal coordinates of the known data points, Y1 and Y2 are the vertical coordinates of the known data points, X is the horizontal coordinate to be interpolated, and Y is the vertical coordinate of the interpolation result. The essence of this formula is to use the linear relationship between the known data points to calculate the vertical coordinate Y of the unknown data point through interpolation. Beneficial Effects

[0024] The utility model provides a thin-sheet micro-distance measuring device. It has the following beneficial effects: the thin-sheet micro-distance measuring device and the measuring method provide a more convenient and accurate measurement method for the surveyor, and wireless transmission is performed through a wireless network. The device can be connected to the host through a router, or directly establish a network connection through the host hotspot. The device can also perform its own network connection diagnosis, and can connect to the host by itself if an abnormality is found. The connection to the host can be completed within 10 seconds after the abnormality is found. The upper computer also monitors the connection status of the device. If the device is found to have no response, it will prompt the user to check the device. The measurement process can be completed in less than 1 second, and the measurement data is more accurate and convenient than the manual measurement method. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a rear view structural schematic diagram of the utility model.

[0026] Figure 2 It is a schematic diagram of the main cross-sectional structure of the utility model.

[0027] In the figure: 1. housing; 2. paddle; 201. rotating shaft; 202. connecting rod; 203. paddle part; 3. micro grating ruler; 4. first circular hole; 5. pad; 6. second circular hole; 7. cover plate. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] Through the personnel in this field, all the electrical components in this case are connected to their corresponding power supplies through wires, and a suitable controller should be selected according to the actual situation to meet the control requirements. The specific connection and control sequence should refer to the following working principle, and the electrical connection between the electrical components is completed in the order of working in sequence. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principle and process, and does not explain the electrical control.

[0030] See also Figure 1-2 , the utility model provides a technical solution:

[0031] Embodiment 1: A thin-sheet micro-distance measuring device, comprising a shell 1, a groove being provided on the shell 1, a paddle 2 being rotatably installed in the groove, a micro grating ruler 3 being embedded in the shell 1, and the design of using the paddle 2 to drive the micro grating ruler 3 reduces the thickness of the device, thereby making the device more applicable.

[0032] The paddle 2 includes a rotating shaft 201, which is rotatably arranged in a groove. A connecting rod 202 is integrally formed on the outer upper side of the rotating shaft 201. The connecting rod 202 coincides with the top view projection of the groove. The connecting rod 202 is obliquely angled with the horizontal direction. The groove is parallel to the sliding end of the micro grating ruler. A toggle portion 203 is integrally formed on the lower side of the rotating shaft 201. The toggle portion 203 is cylindrical.

[0033] A plurality of first circular holes 4 are provided on the outer wall of the housing 1 and located at the lower side of the groove, a backing plate 5 is installed on the outer wall of the housing 1 and located at the front side or the rear side of the groove, the backing plate 5 is connected to the housing 1 by bolts, the backing plate 5 is in an "L" shape in the left view, a plurality of second circular holes 6 are provided on the lower side of the backing plate 5, and the opening direction of the second circular holes 6 is perpendicular to the first circular holes 4;

[0034] Specifically, the first circular hole 6 and the second circular hole are used to screw in bolts or embed magnets, and their main purpose is to fix the entire device.

[0035] A cover plate 7 is embedded on the lower side of the housing 1 and located away from the paddle 2, and a plurality of wiring ports are formed between the cover plate 7 and the housing 1;

[0036] Specifically, an electrical signal receiving end of the micro grating ruler 3 is also arranged on the outer side of the housing 1, which is generally composed of a battery and a single chip microcomputer. After receiving the electrical signal of the micro grating ruler 3, it is transmitted to the host end, and the distance is calculated by a formula;

[0037] Specifically, the basic logic of the algorithm is to calculate the change in resistance based on the changing electrical signal of the micro-grating ruler (add a serial number here), and then substitute the resistance coefficient of the resistor based on the fact that the length of the resistor is proportional to the resistance value (a linear function model) to calculate the change in the length of the resistor, which is the measured distance.

[0038] Specifically, during the test, the shell 1 is placed at the distance measuring place in advance, and then the distance measuring place is closed (this distance measuring place is generally a car door, and this distance measuring module is mainly used to measure the distance after the car door is closed). After closing, an external force presses down the paddle 2, pushing the micro grating ruler 3 to generate an electrical signal. When the measuring place is reopened, since the micro grating ruler 3 can rebound, the paddle 2 can also rebound, which is convenient for the next measurement.

[0039] Embodiment 2: A thin-sheet micro-distance measuring device comprises the following steps:

[0040] Several measuring terminals, a transfer terminal and a host terminal are provided, wherein the several measuring terminals are the thin-film micro-distance measuring devices, the transfer terminal is a router, and the host terminal is a smart tablet or a smart phone;

[0041] Place sensors and fixtures according to the measuring range to produce suitable thin-sheet macro measurement equipment;

[0042] The host terminal simultaneously establishes a network connection with a plurality of the measuring terminals, the host terminal establishes a network connection with the measuring terminal through the transfer terminal, or skips the transfer terminal and directly establishes a network connection with the measuring terminal;

[0043] Perform network connection diagnosis on the measuring end, and reconnect to the host end if an abnormality is found;

[0044] According to the change of the resistance value of the micro-displacement measurement sensor, the corresponding voltage value V is obtained;

[0045] The corresponding displacement distance is calculated by the voltage value V.

[0046] Calculating the corresponding displacement distance by the voltage value V includes the following steps:

[0047] Use the standard block to obtain the corresponding relationship between the voltage value V and the standard value, and record the measured value of the test equipment when using the standard measuring block. The standard value in the standard block is the ordinate, and the measured value is the corresponding abscissa;

[0048] Based on the data obtained by the above method, the measured value is calculated by linear interpolation;

[0049] Establish a formula for linear interpolation measurement displacement:

[0050] Y =Y1 + (Y2-Y1)*(X-X1) / (X2-X1);

[0051] Among them, X1 and X2 are the horizontal coordinates of the known data points, Y1 and Y2 are the vertical coordinates of the known data points, X is the horizontal coordinate to be interpolated, and Y is the vertical coordinate of the interpolation result. The essence of this formula is to use the linear relationship between the known data points to calculate the vertical coordinate Y of the unknown data point through interpolation;

[0052] Specifically, the number of the plurality of measuring terminals can be flexibly selected according to the needs of the user, and any number between one and twenty can be smoothly connected to the host terminal.

[0053] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A thin-sheet micro-distance measuring device, characterized in that: The sheet-type micro-distance measuring device comprises a housing (1), the housing (1) being provided with a groove, a paddle (2) being rotatably mounted in the groove, and a micro grating ruler (3) being embedded in the housing (1). The design of using the paddle (2) to drive the micro grating ruler (3) reduces the thickness of the device, thereby making the device more widely applicable.

2. A thin-film micro-distance measuring device according to claim 1, characterized in that The paddle (2) comprises a rotating shaft (201), the rotating shaft (201) is rotatably arranged in the groove, a connecting rod (202) is integrally formed on the outer upper side of the rotating shaft (201), the connecting rod (202) coincides with the top view projection of the groove, the connecting rod (202) is obliquely angled with the horizontal direction, the groove is parallel to the sliding end of the micro grating ruler, and a toggle portion (203) is integrally formed on the lower side of the rotating shaft (201), the toggle portion (203) is cylindrical, and the toggle portion (203) is in contact with the sliding end of the micro grating ruler (3).

3. A thin-film micro-distance measuring device according to claim 1, characterized in that A plurality of first circular holes (4) are provided on the outer wall of the shell (1) and located at the lower side of the groove. A pad (5) is installed on the outer wall of the shell (1) and located at the front side or the rear side of the groove. The pad (5) is connected to the shell (1) by bolts. The left side view of the pad (5) is "L" shaped. A plurality of second circular holes (6) are provided on the lower side of the pad (5). The opening direction of the second circular holes (6) is perpendicular to that of the first circular holes (4).

4. A thin-sheet micro-distance measuring device according to claim 1, characterized in that A cover plate (7) is embedded on the lower side of the shell (1) and located away from the paddle (2), and a plurality of wiring ports are formed between the cover plate (7) and the shell (1).

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