Industrial control test distance sensor

Abstract

The utility model relates to an industrial control test distance sensor, which comprises a shell, a piezoelectric ceramic component and a driving plate, a front cover is arranged at the front end of the shell and detachably covers the front end of the shell; a profiling mounting hole is formed in the front cover; the piezoelectric ceramic component is bonded in the profiling mounting hole through glue; the piezoelectric ceramic assembly comprises a housing, a support, a piezoelectric ceramic piece and a circuit board. The piezoelectric ceramic piece and the circuit board are both installed on the support, and the piezoelectric ceramic piece is electrically connected with the circuit board. The bracket is bonded in the housing through glue; the housing is bonded in the profiling mounting hole; the driving board is arranged in the shell, and the circuit board is electrically connected with the driving board; a wire outlet through hole is formed in the lower side of the rear end of the shell, and a lead on the driving plate penetrates through the wire outlet through hole. The sensor provided by the utility model can completely identify whether an object exists or not, false operation cannot be caused by the influence of reflected light, and the accuracy is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to sensor technical field, especially a kind of industrial control test distance sensor. BACKGROUND

[0002] Industrial control test distance sensor is a kind of sensor for measuring object distance, widely used in industrial automation and control system. It converts distance information into electrical signal by sensing the distance between object and sensor, so as to realize the measurement and control of distance. The main function of industrial control test distance sensor is to measure the distance between object and sensor, and convert it into usable electrical signal. These signals can be used to control the movement of mechanical equipment, monitor the position of object, etc.

[0003] At present, the traditional industrial control photoelectric light opening is received by light reflection. In photovoltaic industry, solar panels are prone to reflection, and the photoelectric light opening on the assembly line will be misoperated, resulting in product accumulation or damage on the assembly line.

[0004] Therefore, it is necessary to provide an industrial control test distance sensor to solve the above technical problems. INVENTION CONTENTS

[0005] The utility model aims at providing an industrial control test distance sensor, which accurately and effectively identifies whether there is an object, and will not be misoperated due to reflected light, effectively improving accuracy.

[0006] To achieve the above-mentioned purpose of the utility model, an industrial control test distance sensor is provided, comprising a shell, a piezoelectric ceramic assembly and a driving board.

[0007] The front end of the shell is provided with a front cover, which is detachably covered on the front end of the shell.

[0008] The front cover has a profiled mounting hole.

[0009] The piezoelectric ceramic assembly is bonded in the profiled mounting hole by glue.

[0010] The piezoelectric ceramic assembly comprises a cover, a bracket, a piezoelectric ceramic sheet and a circuit board.

[0011] The piezoelectric ceramic sheet and the circuit board are both installed on the bracket, and the piezoelectric ceramic sheet is electrically connected with the circuit board.

[0012] The bracket is bonded in the cover by glue.

[0013] The cover is bonded in the profiled mounting hole.

[0014] The driving board is arranged in the shell, and the circuit board is electrically connected with the driving board.

[0015] The rear end of the shell is provided with a wire outlet through hole, and the lead wire on the driving plate passes through the wire outlet through hole.

[0016] Preferably, the inner wall bottom and the bottom of the shell are each provided with a plurality of guide sliding grooves.

[0017] The inner wall upper portion and the inner wall lower portion of the front cover are provided with a plurality of guide sliding blocks corresponding to the positions of the guide sliding grooves.

[0018] Preferably, the top of the rear end of the shell is provided with a first connecting through hole, and the lower portion of the rear end of the shell is provided with a second connecting through hole.

[0019] The first connecting through hole is circular in cross section, and the second connecting through hole is a waist-shaped through hole.

[0020] Preferably, the top of the shell is provided with an indicator light, and the indicator light is electrically connected with the driving plate.

[0021] Preferably, a shielding cover is attached to the driving plate.

[0022] Preferably, a clamping spring is clamped to the position close to the inner side of the wire outlet through hole on the lead wire of the driving plate.

[0023] Compared with the prior art, the industrial control distance test sensor has the following advantages:

[0024] (1) The driving plate sends intermittent 300KHZ pulses, and the piezoelectric ceramic assembly generates ultrasonic waves through a specific matching layer, which propagates in the forward air. If the sound wave hits an object, it will be reflected back. The piezoelectric ceramic assembly at the head of the sensor detects the ultrasonic wave and converts it into an electrical signal, which is transmitted to the single-chip microcomputer on the driving plate. The single-chip microcomputer calculates the distance of the obstacle by using the time of the transmitted pulse and the received echo electrical signal through a specific algorithm. The sensor circuit module transmits the distance signal to the final device through the communication interface of the sensor for processing. The ultrasonic wave completely identifies whether there is an object, and will not be affected by reflected light to cause misoperation. It effectively identifies whether there is an object, and will not be affected by reflected light to cause misoperation, effectively improving accuracy.

[0025] (2) Simple structure, easy to use. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a structure diagram of an industrial control distance test sensor of the embodiment;

[0027] Figure 2 It is an exploded view of an industrial control distance test sensor of the embodiment;

[0028] Figure 3 It is an exploded view of the piezoelectric ceramic assembly in the embodiment.

[0029] Figure 4 The structure diagram of the shell in the embodiment. DETAILED DESCRIPTION

[0030] The utility model is further explained in connection with the drawings and specific embodiments.

[0031] Embodiment

[0032] As shown in Figure 1 and Figure 2 The industrial control test distance sensor of the embodiment comprises a shell 1, a piezoelectric ceramic assembly 2 and a driving plate 3.

[0033] The front end of the shell 1 is provided with a front cover 4, which is detachably covered on the front end of the shell 1; the front cover 4 is provided with a profiled mounting hole 5; the piezoelectric ceramic assembly 2 is bonded in the profiled mounting hole 5 by glue.

[0034] As shown in Figure 3 The piezoelectric ceramic assembly 2 comprises a cover 6, a support 7, a piezoelectric ceramic sheet 8 and a circuit board 9; the piezoelectric ceramic sheet 8 and the circuit board 9 are both mounted on the support 7, and the piezoelectric ceramic sheet 8 is electrically connected with the circuit board 9; the support 7 is bonded in the cover 6 by glue; the cover 6 is bonded in the profiled mounting hole 5.

[0035] The driving plate 3 is arranged in the shell 1, and the circuit board 9 is electrically connected with the driving plate 3; the rear end of the shell 1 is provided with a wire outlet through hole 10, and the lead wire 14 on the driving plate 3 passes through the wire outlet through hole 10.

[0036] The driving plate 3 sends out intermittent 300KHZ pulses, and the ultrasonic wave generated by the piezoelectric ceramic assembly 2 is transmitted to the front air through a specific matching layer, if the sound wave hits the object, it will be reflected back, and the piezoelectric ceramic assembly 2 of the sensor head detects the ultrasonic wave and converts it into an electrical signal to the single-chip microcomputer on the driving plate 3, and the single-chip microcomputer calculates the distance of the obstacle by using the time of the transmission pulse and the received echo electrical signal through a specific algorithm. The sensor circuit module transmits the distance signal to the final device through the communication interface of the sensor for processing; effectively and accurately identifies whether there is an object, and will not be affected by the reflected light to cause misoperation.

[0037] In the embodiment, as shown in Figure 4As shown, the inner wall bottom and bottom of the shell 1 are provided with a plurality of guide sliding grooves 11; the upper and lower inner walls of the front cover 4 are provided with a plurality of guide sliding blocks 12 corresponding to the positions of the guide sliding grooves 11, and the guide sliding blocks 12 correspond to the guide sliding grooves 11 one by one; in this way, under the guidance of the guide sliding grooves 11 and the guide sliding blocks 12, the front cover 4 is accurately covered on the front end of the shell 1, and quick assembly is realized.

[0038] In the embodiment, as shown in the figure, Figure 1 As shown, the top rear end of the shell 1 is provided with a first connecting through hole 13, and the lower rear end of the shell 1 is provided with a second connecting through hole 15; the cross section of the first connecting through hole 13 is circular, and the second connecting through hole 15 is a waist-shaped through hole; in this way, the above-mentioned sensor can be connected to the equipment through the first connecting through hole 13, and then fine adjustment is realized through the second connecting through hole 15, so that the sensor is quickly and accurately installed at the designated position of the equipment.

[0039] In the embodiment, as shown in the figure, Figure 1 As shown, the top of the shell 1 is provided with an indicator light 16, and the indicator light 16 is electrically connected with the driving board 3; when the above-mentioned sensor works, the indicator light 16 is on, indicating that the surface sensor is working normally.

[0040] In the embodiment, as shown in the figure, Figure 2 As shown, a shielding cover 17 is attached to the driving board 3, and the MCU (microprocessor) in the driving board 3 is very sensitive to external electromagnetic interference, so that the external electromagnetic interference can be shielded through the shielding cover, ensuring the stability of the product and ensuring the accuracy of the above-mentioned sensor.

[0041] In the embodiment, as shown in the figure, Figure 2 As shown, the lead 14 on the driving board 3 is clamped with a clamping spring 18 near the inner side of the lead-through hole, effectively avoiding that the lead is pulled off from the driving board by the assemblers when the lead is stretched out of the lead-through hole 10.

[0042] The above has specifically described the preferred embodiments of the utility model, but the utility model is not limited to the embodiments, and those skilled in the art can make various equivalent modifications or replacements without departing from the spirit of the utility model, and these equivalent modifications or replacements are all included in the range defined by the claims of the application.

Claims

1. An industrial control test distance sensor characterized by, The shell, the piezoelectric ceramic assembly and the driving plate are included; The front end of the shell is provided with a front cover which is detachably covered on the front end of the shell; The front cover is provided with a profiled mounting hole; The piezoelectric ceramic assembly is adhered in the profiled mounting hole by glue; The piezoelectric ceramic assembly includes a cover, a support, a piezoelectric ceramic sheet and a circuit board; The piezoelectric ceramic sheet and the circuit board are both mounted on the support and electrically connected with each other; The support is adhered in the cover by glue; The cover is adhered in the profiled mounting hole; The driving plate is arranged in the shell and electrically connected with the circuit board; The lower side of the rear end of the shell is provided with a wire outlet through hole, and the lead wire on the driving plate passes through the wire outlet through hole.

2. The industrial control test distance sensor of claim 1, wherein, The inner wall bottom and the bottom of the shell are both provided with a plurality of guide sliding grooves; The upper part and the lower part of the inner wall of the front cover are both provided with a plurality of guide sliding blocks corresponding to the positions of the guide sliding grooves, and the guide sliding blocks correspond to the guide sliding grooves one by one.

3. The industrial control test distance sensor of claim 1, wherein, The top of the rear end of the shell is provided with a first connecting through hole, and the lower part of the rear end of the shell is provided with a second connecting through hole; The cross section of the first connecting through hole is circular, and the second connecting through hole is a waist-shaped through hole.

4. The industrial control test distance sensor of claim 1, wherein, The top of the shell is provided with an indicator light which is electrically connected with the driving plate.

5. A process control distance sensor according to any one of claims 1 to 4, wherein The driving plate is attached with a shielding cover.

6. The industrial control test distance sensor of claim 1, wherein, The lead wire on the driving plate is clamped with a clamping spring near the inner side of the wire outlet through hole.

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