CN212391036U - Device for detecting temperature characteristic of proximity sensor - Google Patents

Abstract

The utility model provides a device for detecting the temperature characteristic of a proximity sensor, which comprises an industrial personal computer, a motion control system, a data acquisition system, an instrument and meter system, a printer, a high-low temperature test box and a motion mechanism; the industrial personal computer is respectively connected with the motion control system, the data acquisition system, the instrument system and the printer; a proximity sensor assembly is arranged in the high-low temperature test box; the proximity sensor assembly is respectively connected with the data acquisition system and the instrument system; the motion mechanism for detecting the proximity sensor assembly is installed on the high-low temperature test box and is connected with the motion control system, the data acquisition system and the instrument and meter system. The utility model has the advantages of the reliability is high, stability is good, the price/performance ratio is excellent, the key technology is advanced, control platform is open and the operation is succinct.

Description

Device for detecting temperature characteristic of proximity sensor

Technical Field

The utility model belongs to sensor detection area, specifically speaking relates to a device that is used for detecting proximity sensor temperature characteristic.

Background

Along with the development of industrial technology in China, electronic products gradually develop towards miniaturization, lightweight and high performance, so that the function density of the products is increased, sensitive components are increased, the design life is prolonged, particularly, a large amount of novel composite materials and polymer materials are used, the integration level of microelectronic circuits is continuously improved, the influence of the electronic products on the space environment effect becomes more sensitive, a space special environment effect testing method which gives enough attention to the design is not used originally, the influence becomes more and more prominent, and the bottleneck of high-precision and high-stability design of the products is formed.

The proximity sensor is a switch type sensor (i.e., a contactless switch) to perform position detection without contacting a detection object. At present, the position detection sensor is applied in more and more fields, the requirements on special space environment influence are higher and higher, the precision requirement is higher and higher, and performance parameters of the product in high and low temperature environments must be accurately found out when the product is subjected to environment temperature compensation.

The high-low temperature test chamber has the temperature change rule in the simulated atmospheric environment. Mainly aims at the adaptability test of electronic products and other materials during transportation and use in high-temperature and low-temperature comprehensive environments. The method is used for the links of product design, improvement, identification, inspection and the like. The test of the working performance of the proximity sensor requires not only high and low temperature environment, but also a precise motion mechanism and a set of precise test system. In order to meet the performance conditions of the position detection sensor under high and low temperatures, the test needs to be carried out at a temperature with a certain constant/fixed change rate, the relative position of the position detection sensor and a target needs to be changed, and in addition, performance data of an electronic product needs to be acquired, processed, judged and generated to obtain test result data.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a realize the demand of above-mentioned complex nature, provided a device that is used for detecting proximity sensor temperature characteristic, through setting up motion, the proximity sensor subassembly detection target position in the high low temperature test case changes, changes the temperature through high low temperature test case simultaneously, realizes detecting proximity sensor's complex nature, carries out the collection analysis of proximity sensor data by data acquisition system simultaneously.

The utility model discloses specifically realize the content as follows:

the utility model provides a device for detecting the temperature characteristic of a proximity sensor, which comprises an industrial personal computer, a motion control system, a data acquisition system, an instrument and meter system, a printer, a high-low temperature test box and a motion mechanism;

the industrial personal computer is respectively connected with the motion control system, the data acquisition system, the instrument system and the printer;

a proximity sensor assembly is arranged in the high-low temperature test box; the proximity sensor assembly is respectively connected with the data acquisition system and the instrument system;

the motion mechanism for detecting the proximity sensor assembly is installed on the high-low temperature test box and is connected with the motion control system, the data acquisition system and the instrument and meter system.

In order to better realize the utility model, further, the motion mechanism comprises an internal plane support structure, an X1 axis motion module, an X1 axis closed-loop five-phase motor, a structure mounting surface component, an external support structure and a signal connector;

the internal plane supporting structure is a multi-layer fixing frame body and is arranged in the high-low temperature test box, and the bottom of the internal plane supporting structure is fixedly connected with the inside of the high-low temperature test box;

the proximity sensor assembly comprises an upper layer tested proximity sensor assembly which is fixedly arranged in the high-low temperature test box and is positioned on the upper end surface of the internal plane supporting structure;

the structure mounting surface assembly comprises two panels which are respectively arranged on the inner side and the outer side of one surface wall of the high-low temperature test box, the external supporting structure is a rectangular box body, and one surface of the rectangular box body is fixedly connected with the panel of the structure mounting surface assembly arranged on the outer side of the high-low temperature test box;

the signal connector is arranged on the external supporting structure and is sequentially connected with an X1 shaft closed-loop five-phase motor and an X1 shaft movement module which are arranged on the upper end surface of the external supporting structure; the output end of the X1 axis motion module is connected with an X1 axis auxiliary test piece; the X1 shaft auxiliary test piece comprises an X1 shaft connecting rod connected with the X1 shaft motion module and an X1 shaft auxiliary target assembly for auxiliary detection; through holes are formed in the two panels of the structural mounting surface assembly, and the X1 shaft connecting rod enters the high-low temperature test box through the through holes; the X1 shaft auxiliary target assembly is arranged at the tail end of the X1 shaft connecting rod and corresponds to the upper layer detected proximity sensor assembly.

In order to better realize the utility model, furthermore, the upper layer detected proximity sensor component comprises a sensor mounting seat, an upper layer detected proximity sensor and a butterfly-shaped locking screw;

the sensor mounting seat is mounted on the upper end face of the internal plane supporting structure, and the upper-layer detected proximity sensor is mounted on the sensor mounting seat through butterfly-shaped locking screws;

the X1 shaft auxiliary target assembly comprises a target mounting plate, a target mounting column, a push-pull connecting rod and a butterfly-shaped locking screw;

the target mounting plate is fixedly connected with an X1 shaft connecting rod through a push-pull connecting rod; the target mounting column is mounted on one side, close to the upper-layer detected proximity sensor, of the target mounting plate through butterfly-shaped locking screws, and the positions of the target mounting column and the upper-layer detected proximity sensor are correspondingly consistent in the Y-axis position and the Z-axis position; and a target for enabling the upper layer to be detected to be close to the sensor to sense is arranged on the end face of the target mounting plate.

In order to better realize the utility model, furthermore, the utility model also comprises a zero position stop block; the zero position block is arranged on one side, facing the target mounting plate, of the sensor mounting seat in an adjustable height mode through a threaded part, and can be blocked between the target and the detection head of the upper layer detected proximity sensor when the zero position block is adjusted to the highest height.

In order to better realize the utility model, the device further comprises a guiding and aligning device, wherein the guiding and aligning device comprises a positioning guide shaft and a guide post;

the positioning guide shaft is arranged on the target mounting plate and on the same side surface with the target mounting column;

the guide post is arranged on one surface of the sensor mounting seat facing the target mounting plate, and a groove into which the positioning guide shaft can be inserted is arranged in the guide post;

when the positioning guide shaft is inserted into the guide column for fixing, the target on the target mounting column is exactly corresponding to and consistent with the detection head of the upper layer detected proximity sensor in the Y-axis and Z-axis positions.

In order to better realize the utility model, the utility model further comprises an optical installation platform and an open type linear grating component; the optical installation platform is installed the top end face of outside bearing structure's rectangle box, X1 axle motion module, X1 axle closed loop five-phase motor are installed optical installation platform is last, open straight line grating unit mount is on optical installation platform, and passes through signal connector with data acquisition system, instrument and meter system connect.

In order to better realize the utility model, further, the X1 axis motion module comprises a shaft coupling, a bearing, a slide block, a mounting plate and a ball screw;

the mounting plate is fixedly mounted on the optical mounting platform, the bearing is mounted on the mounting plate, one end of the bearing is connected with the ball screw, and the other end of the bearing is connected with an output shaft of the X1 shaft closed-loop five-phase motor through a coupler;

the ball screw is arranged at the upper end of the mounting plate, an integrated linear ball guide rail is arranged on the mounting plate, and the sliding block moves on the mounting plate through the integrated linear ball guide rail;

one end of the X1 shaft connecting rod is installed on the sliding block, and the other end of the X1 shaft connecting rod penetrates through the structural installation surface assembly to enter the high and low temperature test box to be connected with the X1 shaft auxiliary target assembly.

In order to better realize the utility model discloses, furtherly, still include built-in limit switch, built-in limit switch sets up the end that is located ball on the mounting panel.

In order to better realize the utility model, furthermore, the proximity sensor assembly also comprises a lower layer tested proximity sensor assembly; the device also comprises an X2 shaft closed-loop five-phase motor, an X2 shaft motion module and an X2 shaft auxiliary test piece;

the lower layer measured proximity sensor assembly is arranged at the position of the lower layer of the internal plane supporting structure in the high-low temperature test box and is consistent with the upper layer measured proximity sensor assembly in structure;

the X2-axis closed-loop five-phase motor, the X2-axis motion module and the X2-axis auxiliary test piece are arranged on the bottom end face of the rectangular box body of the external supporting structure; the structure of the test piece is correspondingly consistent with that of an X1 shaft motion module, an X1 shaft closed-loop five-phase motor and an X1 shaft auxiliary test piece;

the X2 axle closed loop five-phase motor is connected with signal connector, X2 axle motion module, X2 axle auxiliary test piece are connected gradually to the output of X2 axle closed loop five-phase motor, X2 axle auxiliary test piece in high low temperature test box with the lower floor is surveyed proximity sensor subassembly and is corresponding.

In order to realize better the utility model discloses, furtherly, outside bearing structure bottom face sets up optics mounting platform, open sharp grating subassembly equally, X2 axle closed loop five-phase motor, X2 axle motion module are installed on the optics mounting platform who is located outside bearing structure bottom face, and the open sharp grating unit mount of bottom face is on optics mounting platform X2 axle motion module side.

Compared with the prior art, the utility model have following advantage and beneficial effect:

(1) the static performance of the proximity sensor to be tested at high and low temperatures can be met, and the dynamic performance of the proximity sensor to be tested can be tested. The utility model can automatically control the relative movement of the target and the proximity sensor in the high and low temperature test chamber, and the movement direction is axial movement;

(2) the control system software realizes the functions of setting the target displacement, the displacement direction, the initial displacement, the cut-off displacement, the displacement speed and other motion parameters and displaying in real time; the automatic, quick and accurate positioning and position keeping functions are achieved; the target centerline is aligned with the centerline of the proximity sensor; the sensing surface of the target and the proximity sensor is automatically zero; collecting and displaying output voltage, resistance and inductance signals of the proximity sensor; self-checking the system; the system has automatic test and manual test functions; the test report can be automatically printed;

(3) the instrument system has good human-computer interface, and has good operability and adaptability. The method has the advantages of high reliability, good stability, excellent cost performance, advanced key technology, open control platform and the like;

(4) the mounting clamps of the proximity sensor and the target are detachable, so that products and targets in different shapes can be mounted conveniently; the material of the tool clamp is required to be a non-magnetic material.

Drawings

FIG. 1 is a view showing a frame structure of a complete system of the apparatus;

FIG. 2 is a schematic view of the connection between the high and low temperature test chamber and the moving mechanism;

FIG. 3 is a front plan view of the motion mechanism in relation to the proximity sensor assembly for testing;

FIG. 4 is a schematic structural view of a corresponding test between an X1 axis auxiliary test piece or an X2 axis auxiliary test piece and an upper layer proximity sensor assembly or a lower layer proximity sensor assembly;

fig. 5 is a schematic view illustrating that the positioning guide shaft is inserted into the guide post when the X1 axis auxiliary test piece or the X2 axis auxiliary test piece is overlapped with the upper layer proximity sensor assembly to be tested or the lower layer proximity sensor assembly to be tested;

FIG. 6 is a schematic structural diagram of the corresponding positions of the target mounting plate and the sensor mounting seat;

FIG. 7 is a schematic view of the optical mounting platform, the open linear grating module, the X1 axis motion module, the X1 axis closed-loop five-phase motor or the X2 axis motion module, and the X2 axis closed-loop five-phase motor;

fig. 8 is a structural connection installation top view of an X1-axis motion module and an X1-axis closed-loop five-phase motor;

fig. 9 is a right side view of the structural connection installation of the X1 axis motion module and the X1 axis closed loop five-phase motor;

fig. 10 is a perspective view of the structural connection installation of the X1 axis motion module and the X1 axis closed-loop five-phase motor;

FIG. 11 is a flow chart of the test of the present apparatus for high and low temperature tests;

FIG. 12 is a schematic view of a signal connector;

fig. 13 is a perspective view of the device.

Wherein: 1. a lower layer measured proximity sensor component, 2 an upper layer measured proximity sensor component, 3 an internal plane supporting structure, 4 and X2 shaft closed loop five-phase motor, 5 and X1 shaft motion modules, 6 and X1 shaft closed loop five-phase motor, 7 a structure mounting surface component, 8 and X2 shaft motion modules, 9 an external supporting structure, 10 a signal connector, 11 a sensor mounting seat, 12 an upper layer measured proximity sensor, 13 a butterfly-shaped locking screw, 14 a zero position block, 15, the device comprises a positioning guide shaft, 16, a guide column, 17, a target mounting plate, 18, a target mounting column, 19, a push-pull connecting rod, 20, an optical mounting platform, 21, an open type linear grating assembly, 22, a coupler, 23, a bearing, 24, a sliding block, 25, an integrated type linear ball guide rail, 26, a built-in limit switch, 27, a ball screw, 28, a mounting plate, 29 and a high-low temperature test box.

Detailed Description

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the technical solutions in 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 should be understood that the described embodiments are only some embodiments of the present invention, but not all embodiments, and therefore should not be considered as limitations to the scope of protection. Based on the embodiments in the present invention, all other embodiments obtained by the staff of ordinary skill in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1:

a device for detecting the temperature characteristic of a proximity sensor is shown in figures 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10 and comprises an industrial personal computer, a motion control system, a data acquisition system, an instrument system, a printer, a high-low temperature test box 29 and a motion mechanism;

the industrial personal computer is respectively connected with the motion control system, the data acquisition system, the instrument system and the printer;

a proximity sensor assembly is arranged in the high-low temperature test box 29; the proximity sensor assembly is respectively connected with the data acquisition system and the instrument system;

the motion mechanism for detecting the proximity sensor assembly is mounted on the high and low temperature test box 29 and is connected with a motion control system, a data acquisition system and an instrument and meter system.

In order to better realize the utility model, further, the motion mechanism comprises an internal plane support structure 3, an X1 shaft motion module 5, an X1 shaft closed-loop five-phase motor 6, a structure mounting surface component 7, an external support structure 9 and a signal connector 10;

the internal plane supporting structure 3 is a multi-layer fixed frame body and is arranged in the high-low temperature test box 29, and the bottom of the internal plane supporting structure is fixedly connected with the inside of the high-low temperature test box 29;

the proximity sensor assembly comprises an upper layer tested proximity sensor assembly 2 fixedly arranged in a high-low temperature test box 29 and positioned on the upper end face of an internal plane supporting structure 3;

the structure mounting surface assembly 7 comprises two panels which are respectively arranged on the inner side and the outer side of one side wall of the high-low temperature test box 29, the external supporting structure 9 is a rectangular box body, and one side of the rectangular box body is fixedly connected with the panel of the structure mounting surface assembly 7 arranged on the outer side of the high-low temperature test box 29;

the signal connector 10 is arranged on the external supporting structure 9 and is sequentially connected with the X1 shaft closed-loop five-phase motor 6 and the X1 shaft motion module 5 which are arranged on the upper end surface of the external supporting structure 9; the output end of the X1 axis motion module 5 is connected with an X1 axis auxiliary test piece; the X1 shaft auxiliary test piece comprises an X1 shaft connecting rod connected with the X1 shaft motion module 5 and an X1 shaft auxiliary target assembly for auxiliary detection; the two panels of the structural mounting surface assembly 7 are provided with through holes, and the X1 shaft connecting rod enters the high-low temperature test box 29 through the through holes; the X1 shaft auxiliary target assembly is arranged at the tail end of the X1 shaft connecting rod and corresponds to the upper layer detected proximity sensor assembly 2.

In order to better realize the utility model, further, the upper layer detected proximity sensor assembly 2 comprises a sensor mounting seat 11, an upper layer detected proximity sensor 12 and a butterfly-shaped locking screw 13;

the sensor mounting seat 11 is mounted on the upper end face of the internal plane supporting structure 3, and the upper layer detected proximity sensor 12 is mounted on the sensor mounting seat 11 through a butterfly-shaped locking screw 13;

the X1 shaft auxiliary target assembly comprises a target mounting plate 17, a target mounting column 18, a push-pull connecting rod 19 and a butterfly-shaped locking screw 13;

the target mounting plate 17 is fixedly connected with an X1 shaft connecting rod through a push-pull connecting rod 19; the target mounting column 18 is mounted on one side, close to the upper-layer detected proximity sensor 12, of the target mounting plate 17 through a butterfly-shaped locking screw 13, and is correspondingly consistent with the upper-layer detected proximity sensor 12 in the positions of the Y axis and the Z axis; and a target for enabling the upper layer to be detected to be close to the induction of the sensor 12 is arranged on the end surface of the target mounting plate 17.

In order to better realize the utility model, further, the optical installation platform 20 and the open type linear grating component 21 are also included; the optical installation platform 20 is installed on the top end face of the rectangular box body of the external supporting structure 9, the X1 shaft motion module 5 and the X1 shaft closed-loop five-phase motor 6 are installed on the optical installation platform 20, and the open type linear grating assembly 21 is installed on the optical installation platform 20 and is connected with the data acquisition system and the instrument and meter system through the signal connector 10.

In order to better implement the present invention, further, the X1 axis movement module 5 includes a shaft coupling 22, a bearing 23, a slider 24, a mounting plate 28, and a ball screw 27;

the mounting plate 28 is fixedly mounted on the optical mounting platform 20, the bearing 23 is mounted on the mounting plate 28, one end of the bearing is connected with the ball screw 27, and the other end of the bearing is connected with an output shaft of the X1 shaft closed-loop five-phase motor 6 through a coupler 22;

the ball screw 27 is mounted on the upper end of a mounting plate 28, an integrated linear ball guide 25 is arranged on the mounting plate 28, and the slide block 24 moves on the mounting plate 28 through the integrated linear ball guide 25;

one end of the X1 shaft connecting rod is installed on the sliding block 24, and the other end of the shaft connecting rod passes through the structural installation surface assembly 7 and enters the high-low temperature test box 29 to be connected with the X1 shaft auxiliary target assembly.

In order to better realize the utility model, further, still include built-in limit switch 26, built-in limit switch 26 sets up and is located the end of ball 27 on mounting panel 28.

The working principle is as follows: the target is controlled to move through the motion mechanism, the temperature of the high-low temperature test box 29 is adjusted at the same time, therefore, the measurement of different distance feedback under various temperature characteristics of the proximity sensor assembly can be realized, and meanwhile, the change trend of the proximity sensor assembly is acquired in real time through the industrial personal computer control data acquisition system. And meanwhile, the industrial personal computer controls the X-axis motion of the motion mechanism through the motion control system. Finally, the control system software realizes the functions of setting the target displacement, the displacement direction, the initial displacement, the cut-to-displacement, the displacement speed and other motion parameters and displaying in real time; the automatic, quick and accurate positioning and position keeping functions are achieved; the target centerline is aligned with the centerline of the proximity sensor (proximity switch); the induction surface of the target and the proximity sensor (proximity switch) is automatically zero; collecting and displaying output voltage, resistance and inductance signals of a proximity sensor (a proximity switch); self-checking the system; the system has automatic test and manual test functions; the test report may be automatically printed. The high-low temperature test box 29 is arranged to operate at the temperature of-65-180 ℃.

An open linear grating assembly 21, which is designed as follows:

linear motion range of X1X2 axis: 0-50 mm, movement rate: 0-10 mm/s;

the X-axis linear motion shaft adopts a transmission mode of a ball screw 27 and an integrated linear ball guide rail 25, and converts the rotary motion of the motor into linear motion. The X-axis motion module drives the ball screw 27 through an X-axis closed-loop five-phase driving motor to drive the sliding block 24 to move back and forth, and the sliding block 24 pushes the target to slide back and forth, so that the position distance between the target and the proximity sensor is changed.

This device chooses ball screw 27 drive for use, and between the mountain of ball screw 27's male thread and the valley of female thread, put into the ball, the sliding motion conversion of ball and screw thread face is the contact motion. Compared with a common driving thread, the rotation can be realized by smaller torque.

The X-axis motion module carries a five-phase closed-loop stepper motor, step angle (without subdivision): 0.36 °, under the condition of not subdividing through the driver, can realize 2um step movement amount, under the condition of driver subdivision, can realize 0.125 um's movement amount, install open linear grating subassembly 21 simultaneously, resolution ratio 0.01um, repeated positioning accuracy: 0.1 um. The 32-bit industrial personal computer and the control algorithm are adopted, and the accuracy can be up to the micron level. Meets the requirement of sports index.

Example 2:

on the basis of the above embodiment 1, the present embodiment further includes a built-in limit switch 26, wherein the built-in limit switch 26 is disposed on the mounting plate 28 and located at the end of the ball screw 27.

In order to better realize the utility model, further, the proximity sensor assembly also comprises a lower layer tested proximity sensor assembly 1; the device also comprises an X2 shaft closed-loop five-phase motor 4, an X2 shaft motion module 8 and an X2 shaft auxiliary test piece;

the lower layer tested proximity sensor assembly 1 is arranged in a high-low temperature test box 29 and positioned at the lower layer of the internal plane supporting structure 3, and the structure of the lower layer tested proximity sensor assembly is consistent with that of the upper layer tested proximity sensor assembly 2;

the X2 shaft closed-loop five-phase motor 4, the X2 shaft motion module 8 and the X2 shaft auxiliary test piece are arranged on the bottom end face of the rectangular box body of the external supporting structure 9; the structure of the auxiliary test piece is correspondingly consistent with that of an X1 shaft motion module 5, an X1 shaft closed-loop five-phase motor 6 and an X1 shaft auxiliary test piece;

the X2 axle closed loop five-phase motor 4 is connected with signal connector 10, the output of X2 axle closed loop five-phase motor 4 connects gradually X2 axle motion module 8, X2 axle auxiliary test piece, X2 axle auxiliary test piece in high low temperature test box 29 with the lower floor is surveyed and is close sensor assembly 1 and correspond.

In order to better realize the utility model discloses, furtherly, outside bearing structure 9 bottom face sets up optics mounting platform 20, open straight line grating subassembly 21 equally, X2 axle closed loop five-phase motor 4, X2 axle motion module 8 are installed on the optics mounting platform 20 that is located outside bearing structure 9 bottom face, and the open straight line grating subassembly 21 of bottom face is installed on optics mounting platform 20 and is moved 8 sides of module X2.

The working principle is as follows: when the number of the proximity sensors of the upper proximity sensor assembly 2 is large, the target arranged on the X1 axis is not enough for measurement, the lower proximity sensor assembly 1 with the same structure as the upper proximity sensor assembly 2 can be arranged on the lower layer of the inner plane supporting mechanism 3 for measurement, and the lower proximity sensor assembly 1 is correspondingly provided with the measuring device with the X2 axis on the bottom end surface of the outer supporting structure 9.

Other parts of this embodiment are the same as those of embodiment 1, and thus are not described again.

Example 3:

on the basis of any one of the embodiments 1-2, as shown in fig. 11, the measurement and control system mainly comprises a motion control system and a data acquisition system, and the motion control system adopts a servo control system based on a PC + motion controller, so that the measurement and control system has the characteristics of high reliability, rapidity, stability, good openness, strong computing capability and the like. The data acquisition device mainly comprises a program control power supply, a PCI data acquisition unit, a PCI digital I/O module, an inductance tester, a signal conditioning box and the like. In order to meet the control requirements of multi-axis precise control, data transmission and automatic precise positioning of a proximity switch displacement mechanism, an upper control system based on an industrial personal computer, a high-performance servo control system based on an Ethernet bus and an electric protection system are designed. The whole control system consists of an upper computer control unit, a data acquisition system, a LAN network motion controller, an open grating feedback system and a precise servo drive system. The whole control system adopts an upper computer bus structure and a lower computer bus structure, and the upper computer adopts an industrial control computer, so that the functions of human-computer interaction of operators, display of various states of the system, system parameter configuration, online system supervision, control, maintenance and the like are mainly realized. The lower computer adopts LAN, RS232, USB and other communication, mainly realizes the functions of collecting field signals, transmitting real-time data to the upper computer, transmitting control instructions to the servo driver in real time and the like, and adopts a double closed-loop position control mode to achieve various motion parameter indexes of the system. The specific test flow is shown in fig. 11.

Other parts of this embodiment are the same as any of embodiments 1-2 described above, and thus are not described again.

Example 4:

in this embodiment, on the basis of any one of the above embodiments 1 to 3, in order to better implement the present invention, as shown in fig. 5, further, a zero position stopper 14 is further included; the zero position block 14 is installed on one side of the sensor installation seat 11, which faces the target installation plate 17, in a height-adjustable manner through a screw member, and can block between the target and the detection head of the upper layer detected proximity sensor 12 when the zero position block 14 is adjusted to the highest height.

In order to better realize the utility model, the device further comprises a guiding and aligning device, wherein the guiding and aligning device comprises a positioning guide shaft 15 and a guide column 16;

the positioning guide shaft 15 is arranged on the target mounting plate 17 and on the same side surface as the target mounting column 18;

the guide post 16 is arranged on the sensor mounting seat 11 and on the same side as the zero position stop 14, and a groove into which the positioning guide shaft 15 can be inserted is arranged in the guide post 16;

when the positioning guide shaft 15 is inserted into the guide column 16 for fixing, the target on the target mounting column 18 is exactly corresponding to the detection head of the upper layer detected proximity sensor 12 in the Y-axis and Z-axis positions.

The working principle is as follows: in order to ensure that the target is concentric with the center of the proximity sensor, the part hole position of the proximity sensor is fixed during manufacturing equipment, and is coincided with the part hole position of the target mounting column 18 for fixing the target at the same time for processing, so that the hole positions are aligned and concentric. The structural member is integrally processed through precise numerical control during processing, and concentricity is guaranteed on a mechanical structure. The parts for fixing the proximity sensor are fixed, the target mounting plate 17 for fixing the target slides, and the concentricity of the target mounting plate 17 and the sensor mounting seat 11 during movement is ensured by the positioning guide shaft and the guide post.

In order to realize the accurate zero-aligning function of the test system, 2 zero-aligning modes are designed, including mechanical zero-aligning and control zero-aligning, and one of the modes with good effect is selected according to the test result.

A. The mechanical stop zero setting mode:

to ensure that each proximity sensor is mounted in the same alignment, the zero stop 14 is designed, and the system zero-alignment principle is as follows:

(1) raising the zero stop 14 upwards and fixing it;

(2) mounting a proximity sensor, and enabling a switch head to abut against a zero position stop block 14;

(3) the target also abuts the zero stop 14, at which time the push-pull link (19) is set to zero by the computer. The distance between the target and the end face of the detection end of the proximity sensor is the thickness (6 mm) of the zero position stop 14;

(4) the zero position is aligned and, once set, the zero stop 14 is moved downward to complete the zero alignment.

B. The computer control zero-checking mode:

firstly, testing the current and torque values when the motor runs into locked rotor through a test mode. The motor is controlled to drive the target to move towards the direction of the detected proximity sensor, the torque and the current value of the motor are monitored in real time through the industrial personal computer, when the target and the detected proximity sensor are superposed, the motor is approximate to a locked-rotor state, the current and the torque of the motor are increased at the moment, the value is compared with the current and the torque value tested before, when the current value, the torque value and the test value are equal, the motor is stopped to run, and the current position of the motor is set as a zero point.

Other parts of this embodiment are the same as any of embodiments 1 to 3, and thus are not described again.

Example 5:

in this embodiment, on the basis of any one of the above embodiments 1 to 4, further, the zero position stopper 14 may also be used as an alignment standard plate, the alignment standard plate is erected between the target and the proximity sensor to be tested, the target is pushed by controlling the motor to abut against the alignment standard plate, then the proximity sensor to be tested is mounted on the sensor mounting seat 11, the end surface abuts against the alignment standard plate, the butterfly-shaped locking screw 13 is screwed, and then the axial position size of the readout basis X of the display is measured;

and (4) taking the alignment standard plate away, pulling the target to move to the initial position of the test by the motor, wherein the initial position is a position where the proximity sensor does not sense, and automatically setting according to different proximity sensors. Then, the test is started, and the target is slowly pushed to approach the proximity sensors until all the proximity sensors sense one by one. The induction distance of each proximity sensor can be recorded in time, and the proximity sensors can be compared with the induction standard range of the proximity sensors to detect whether the proximity sensors are qualified or not.

Other parts of this embodiment are the same as any of embodiments 1 to 4, and thus are not described again.

The above is only the preferred embodiment of the present invention, not to the limitation of the present invention in any form, all the technical matters of the present invention all fall into the protection scope of the present invention to any simple modification and equivalent change of the above embodiments.

Claims (10)

1. A device for detecting the temperature characteristic of a proximity sensor is characterized by comprising an industrial personal computer, a motion control system, a data acquisition system, an instrument system, a printer, a high-low temperature test box (29) and a motion mechanism;

the industrial personal computer is respectively connected with the motion control system, the data acquisition system, the instrument system and the printer;

a proximity sensor assembly is arranged in the high-low temperature test box (29); the proximity sensor assembly is respectively connected with the data acquisition system and the instrument system;

the motion mechanism for detecting the proximity sensor assembly is installed on the high-low temperature test box (29) and is connected with a motion control system, a data acquisition system and an instrument and meter system.

2. The apparatus for sensing temperature characteristics of a proximity sensor of claim 1, wherein the motion mechanism comprises an internal planar support structure (3), an X1 axis motion module (5), an X1 axis closed loop five phase motor (6), a structural mounting face assembly (7), an external support structure (9), a signal connector (10);

the internal plane supporting structure (3) is a multi-layer fixed frame body and is arranged in the high-low temperature test box (29), and the bottom of the internal plane supporting structure is fixedly connected with the inside of the high-low temperature test box (29);

the proximity sensor assembly comprises an upper layer proximity sensor assembly (2) to be tested, which is fixedly arranged in a high-low temperature test box (29) and is positioned on the upper end face of an internal plane supporting structure (3);

the structure mounting surface assembly (7) comprises two panels which are respectively arranged on the inner side and the outer side of one side wall of the high-low temperature test box (29), the external supporting structure (9) is a rectangular box body, and one side of the rectangular box body is fixedly connected with the panel of the structure mounting surface assembly (7) arranged on the outer side of the high-low temperature test box (29);

the signal connector (10) is arranged on the external supporting structure (9) and is sequentially connected with an X1 shaft closed-loop five-phase motor (6) and an X1 shaft moving module (5) which are arranged on the upper end face of the external supporting structure (9); the output end of the X1 axis motion module (5) is connected with an X1 axis auxiliary test piece; the X1-axis auxiliary test piece comprises an X1-axis connecting rod connected with the X1-axis motion module (5) and an X1-axis auxiliary target assembly for auxiliary detection; the two panels of the structural mounting surface assembly (7) are provided with through holes, and the X1 shaft connecting rod enters the high-low temperature test box (29) through the through holes; the X1 shaft auxiliary target assembly is arranged at the tail end of the X1 shaft connecting rod and corresponds to the upper layer detected proximity sensor assembly (2).

3. The apparatus for detecting the temperature characteristic of the proximity sensor according to claim 2, wherein the upper layer detected proximity sensor assembly (2) comprises a sensor mounting seat (11), an upper layer detected proximity sensor (12), a butterfly-type locking screw (13);

the sensor mounting seat (11) is mounted on the upper end face of the internal plane supporting structure (3), and the upper-layer detected proximity sensor (12) is mounted on the sensor mounting seat (11) through a butterfly-shaped locking screw (13);

the X1 shaft auxiliary target assembly comprises a target mounting plate (17), a target mounting column (18), a push-pull connecting rod (19) and a butterfly-shaped locking screw (13);

the target mounting plate (17) is fixedly connected with an X1 shaft connecting rod through a push-pull connecting rod (19); the target mounting column (18) is mounted on one side, close to the upper-layer detected proximity sensor (12), of the target mounting plate (17) through butterfly-shaped locking screws (13), and the positions of the target mounting column and the upper-layer detected proximity sensor (12) are correspondingly consistent on the Y-axis position and the Z-axis position; and a target which is used for enabling the upper layer to be detected to be close to the sensor (12) to sense is arranged on the end face of the target mounting plate (17).

4. A device for sensing the temperature characteristic of a proximity sensor according to claim 3, further comprising a zero stop (14); the zero position block (14) is arranged on one side, facing the target mounting plate (17), of the sensor mounting seat (11) in a height-adjustable mode through a threaded piece, and when the zero position block (14) is adjusted to the highest height, the zero position block can be blocked between the target and a detection head of the upper layer detected proximity sensor (12).

5. A device for detecting the temperature characteristic of a proximity sensor according to claim 3, further comprising a guide alignment device including a positioning guide shaft (15), a guide post (16);

the positioning guide shaft (15) is arranged on the target mounting plate (17) and is arranged on the same side face as the target mounting column (18);

the guide post (16) is arranged on one surface of the sensor mounting seat (11) facing the target mounting plate (17), and a groove into which the positioning guide shaft (15) can be inserted is arranged in the guide post (16);

when the positioning guide shaft (15) is inserted into the guide column (16) for fixation, the target on the target mounting column (18) is exactly corresponding to the detection head of the upper layer detected proximity sensor (12) in the Y-axis and Z-axis positions.

6. The apparatus for sensing a temperature characteristic of a proximity sensor of claim 2, further comprising an optical mounting platform (20), an open linear grating assembly (21); optical installation platform (20) are installed the top end face of the rectangle box of outside bearing structure (9), X1 axle motion module (5), X1 axle closed loop five-phase motor (6) are installed on optical installation platform (20), open straight line grating subassembly (21) are installed on optical installation platform (20), and pass through signal connector (10) with data acquisition system, instrument and meter system connect.

7. The device for detecting the temperature characteristic of the proximity sensor according to claim 6, wherein the X1 axis motion module (5) comprises a coupling (22), a bearing (23), a slide block (24), a mounting plate (28), a ball screw (27);

the mounting plate (28) is fixedly mounted on the optical mounting platform (20), the bearing (23) is mounted on the mounting plate (28), one end of the bearing is connected with the ball screw (27), and the other end of the bearing is connected with an output shaft of the X1 shaft closed-loop five-phase motor (6) through a coupler (22);

the ball screw (27) is installed at the upper end of an installation plate (28), an integrated linear ball guide rail (25) is arranged on the installation plate (28), and the sliding block (24) moves on the installation plate (28) through the integrated linear ball guide rail (25);

one end of the X1 shaft connecting rod is installed on the sliding block (24), and the other end of the shaft connecting rod penetrates through the structural installation surface assembly (7) to enter the high-low temperature test box (29) to be connected with the X1 shaft auxiliary target assembly.

8. The apparatus for detecting the temperature characteristic of a proximity sensor according to claim 7, further comprising a built-in limit switch (26), the built-in limit switch (26) being provided on the mounting plate (28) at the end of the ball screw (27).

9. An arrangement for sensing a temperature characteristic of a proximity sensor according to any of claims 2-8, characterized in that the proximity sensor assembly further comprises an underlying proximity sensor assembly under test (1); the device also comprises an X2 shaft closed-loop five-phase motor (4), an X2 shaft movement module (8) and an X2 shaft auxiliary test piece;

the lower-layer detected proximity sensor assembly (1) is arranged in a high-low temperature test box (29) and is positioned at the lower layer of the internal plane supporting structure (3), and the structure of the lower-layer detected proximity sensor assembly is consistent with that of the upper-layer detected proximity sensor assembly (2);

the X2-axis closed-loop five-phase motor (4), the X2-axis motion module (8) and the X2-axis auxiliary test piece are arranged on the bottom end face of a rectangular box body of the external support structure (9); the structure of the test piece is correspondingly consistent with that of an X1 shaft motion module (5), an X1 shaft closed-loop five-phase motor (6) and an X1 shaft auxiliary test piece;

x2 axle closed loop five-phase motor (4) are connected with signal connector (10), X2 axle motion module (8), the supplementary test piece of X2 axle are connected gradually to the output of X2 axle closed loop five-phase motor (4), the supplementary test piece of X2 axle in high low temperature test case (29) with the lower floor is surveyed proximity sensor subassembly (1) and is corresponded.

10. The apparatus for detecting the temperature characteristic of a proximity sensor according to claim 9, wherein the bottom end face of the external supporting structure (9) is also provided with an optical mounting platform (20) and an open linear grating assembly (21), the X2-axis closed-loop five-phase motor (4) and the X2-axis moving module (8) are mounted on the optical mounting platform (20) on the bottom end face of the external supporting structure (9), and the open linear grating assembly (21) on the bottom end face is mounted on the side of the X2-axis moving module (8) on the optical mounting platform (20).

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