CN212620646U - Temperature drift detection equipment of linear displacement sensor - Google Patents
Temperature drift detection equipment of linear displacement sensor Download PDFInfo
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- CN212620646U CN212620646U CN202021806329.4U CN202021806329U CN212620646U CN 212620646 U CN212620646 U CN 212620646U CN 202021806329 U CN202021806329 U CN 202021806329U CN 212620646 U CN212620646 U CN 212620646U
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Abstract
The utility model belongs to the technical field of the sensor detects technique and specifically relates to a linear displacement sensor's temperature floats check out test set is related to. The temperature drift detection equipment comprises a thermostat, a temperature sensor and a data acquisition device; treat that linear displacement sensor and temperature sensor all set up in the thermostated container, treat that linear displacement sensor and temperature sensor all are connected with data acquisition device. Through setting up linear displacement sensor in the thermostated container, provide the temperature environment of a change for linear displacement sensor, temperature sensor can detect the ambient temperature that linear displacement sensor located, can gather the data that linear displacement sensor and temperature sensor detected through collection system, can obtain the numerical value of linear displacement sensor output under the different temperatures, judges linear displacement sensor's temperature drift characteristic according to above-mentioned numerical value. The temperature drift detection equipment of the linear displacement sensor can accurately measure the temperature drift characteristic of the position sensor, and unqualified products are avoided.
Description
Technical Field
The utility model belongs to the technical field of the sensor detects technique and specifically relates to a linear displacement sensor's temperature floats check out test set is related to.
Background
LVDT is an abbreviation of linear variable differential transformer, belonging to the linear displacement transducer. The working principle is simply that of a movable iron core transformer. The LVDT can be used for measuring the elongation, vibration frequency, amplitude, thickness and expansion of the object and other accurate data. The method can be particularly used for positioning machine tool and hydraulic cylinders, controlling roll gaps and valves and the like. Temperature drift generally means that the ambient temperature changes to cause the transistor parameters to change, which causes instability of the static operating point, instability of the dynamic parameters of the circuit, and even failure of the circuit to operate normally. The change of parameters of the semiconductor device caused by the temperature change is a main cause of the zero drift phenomenon, so the zero drift is also called temperature drift, and is called temperature drift for short. The measured value of the linear displacement sensor changes along with the change of the environmental temperature, the output value cannot accurately reflect the actual position of the measured actuating mechanism, and the actual position must be detected, so that unqualified products are avoided.
SUMMERY OF THE UTILITY MODEL
A first object of the utility model is to provide a linear displacement sensor's temperature floats check out test set, and this check out test set can detect the linear displacement sensor temperature floats the characteristic.
The utility model provides a temperature drift detection device of a linear displacement sensor, which comprises a thermostat, a temperature sensor and a data acquisition device;
the linear displacement sensor and the temperature sensor to be detected are both arranged in the constant temperature box and are connected with the data acquisition device.
Preferably, the data acquisition device comprises a PLC, a first transmitter and an AD module;
the signal output end of the linear displacement sensor to be detected is connected with the signal input end of the first transmitter;
the signal output part of the first transmitter is connected with the signal input part of the AD module, and the signal output part of the AD module is connected with the signal input part of the PLC.
Preferably, the data acquisition device further comprises a second transmitter;
the signal output end of the temperature sensor is connected with the signal input end of the second transmitter, and the signal output end of the second transmitter is connected with the signal input end of the AD module.
Preferably, the AD module includes a plurality of input interfaces, and the first transmitter and the second transmitter are respectively connected to different interfaces.
Preferably, the data acquisition device further comprises a display, and the output end of the PLC is connected with the display.
Preferably, a binding post is arranged in the thermostat, and the data acquisition device is connected with the linear displacement sensor to be detected through the binding post.
Preferably, the incubator comprises an inner container and a shell, the shell is wrapped on the outer side of the inner container, and the data acquisition equipment is fixed on the shell.
Advantageous effects
Through setting up linear displacement sensor in the thermostated container, can provide the temperature environment of a change for linear displacement sensor, temperature sensor can detect the ambient temperature that linear displacement sensor located, can gather the data that linear displacement sensor and temperature sensor detected through collection system, can obtain the numerical value of linear displacement sensor output under the different temperatures, and the user can judge linear displacement sensor's temperature drift characteristic according to above-mentioned numerical value. The temperature drift detection equipment of the linear displacement sensor can accurately measure the temperature drift characteristic of the position sensor, and unqualified products are avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in 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 creative efforts.
Fig. 1 is a schematic structural diagram of a temperature drift detection device of a linear displacement sensor according to an embodiment of the present invention.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood 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 work belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be 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.
As shown in fig. 1, the present embodiment provides a temperature drift detection apparatus of a linear displacement sensor, which includes an oven, a temperature sensor, and a data acquisition device.
Treat that linear displacement sensor and temperature sensor all set up in the thermostated container, treat that linear displacement sensor and temperature sensor all are connected with data acquisition device.
In this embodiment, through setting up linear displacement sensor in the thermostated container, can provide a temperature environment of change for linear displacement sensor, temperature sensor can detect the ambient temperature that linear displacement sensor is located, can gather the data that linear displacement sensor and temperature sensor detected through collection system, can obtain the numerical value that linear displacement sensor exported under different temperatures, and the user can judge linear displacement sensor's temperature according to above-mentioned numerical value and drift the characteristic. The temperature drift detection equipment of the linear displacement sensor can accurately measure the temperature drift characteristic of the position sensor, and unqualified products are avoided.
The data acquisition device comprises a PLC, a first transmitter and an AD module.
And the signal output end of the linear displacement sensor to be detected is connected with the signal input end of the first transmitter.
The signal output part of the first transmitter is connected with the signal input part of the AD module, and the signal output part of the AD module is connected with the signal input part of the PLC.
The data acquisition device also comprises a second transmitter.
The signal output end of the temperature sensor is connected with the signal input end of the second transmitter, and the signal output end of the second transmitter is connected with the signal input end of the AD module.
The AD module comprises a plurality of input interfaces, and the first transmitter and the second transmitter are respectively connected with different interfaces.
The data acquisition device also comprises a display, and the output end of the PLC is connected with the display.
In the present embodiment, circuits of the sensor, the transmitter, the AD module, the PLC, and the display module, and connection methods between the respective components belong to the prior art, and the circuits of the respective components and connection methods between the respective components are not improved in the present embodiment. For example, patent application No. 201610046559.7 discloses an online performance and durability monitoring system for a vacuum pump of a milking machine, wherein the above components, and the connection relationship between the components, are disclosed. The important protection content of the present embodiment is to set the linear displacement sensor and the temperature sensor in the incubator, and to collect the output values of the linear displacement sensor and the temperature sensor by using the data collection device.
The inside of thermostated container is provided with the terminal, and data acquisition device passes through the terminal and is connected with waiting to detect linear displacement sensor. Through the setting of terminal to with wait to detect linear displacement sensor and data acquisition device's being connected, conveniently detect linear displacement sensor to the difference and measure.
The incubator comprises an inner container and a shell, the shell is wrapped on the outer side of the inner container, and the data acquisition equipment is fixed on the shell. Set up data acquisition equipment on the shell, make check out test set's the degree of integrating higher, the use of check out test set of being convenient for.
In order to further describe the above detection device, this embodiment further provides a specific working process of the above detection device:
the linear displacement sensor is connected with a power supply (the sensor power supply) and then placed in a constant temperature box.
In the detection process, the temperature change is realized by adjusting the temperature of the constant temperature box at regular intervals.
The temperature sensor monitors the test temperature in real time, outputs an analog quantity signal through the temperature sensor transmitter, and is recorded by the PLC of the analog quantity expansion module after being connected.
The output signal of the linear displacement sensor also outputs an analog quantity signal through the transmitter of the linear displacement sensor, and the analog quantity signal is recorded by a PLC connected with an analog quantity expansion module.
And the control unit (PLC) calculates the temperature recorded above and the voltage information output by the linear displacement sensor, and displays the temperature/voltage information on the text display in the form of a temperature/voltage curve.
The utility model discloses a sample data that the arrangement was gathered at the temperature drift check out test set of linear displacement sensor establish temperature/voltage curve, realized that online temperature drift to this position sensor's output value detects.
In this embodiment, a method for generating a temperature/voltage curve is not improved, and this method is a conventional technique. The PLC can realize the function by matching with the display, for example, the Siemens touch screen MP377 (display) has a curve function, and the PLC can generate a corresponding curve by utilizing data transmitted by the PLC, so that the PLC can be conveniently checked by a user.
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 (7)
1. The temperature drift detection equipment of the linear displacement sensor is characterized by comprising a thermostat, a temperature sensor and a data acquisition device;
the linear displacement sensor and the temperature sensor to be detected are both arranged in the constant temperature box and are connected with the data acquisition device.
2. The temperature drift detection device of the linear displacement sensor according to claim 1, wherein the data acquisition device comprises a PLC, a first transmitter and an AD module;
the signal output end of the linear displacement sensor to be detected is connected with the signal input end of the first transmitter;
the signal output part of the first transmitter is connected with the signal input part of the AD module, and the signal output part of the AD module is connected with the signal input part of the PLC.
3. The temperature drift detection device of the linear displacement sensor according to claim 2, wherein the data acquisition device further comprises a second transmitter;
the signal output end of the temperature sensor is connected with the signal input end of the second transmitter, and the signal output end of the second transmitter is connected with the signal input end of the AD module.
4. The temperature drift detection device of the linear displacement sensor according to claim 3, wherein the AD module comprises a plurality of input interfaces, and the first transducer and the second transducer are respectively connected with different interfaces.
5. The temperature drift detection device of the linear displacement sensor according to claim 2, wherein the data acquisition device further comprises a display, and the output end of the PLC is connected with the display.
6. The temperature drift detection equipment of the linear displacement sensor according to claim 1, wherein a wiring terminal is arranged inside the constant temperature box, and the data acquisition device is connected with the linear displacement sensor to be detected through the wiring terminal.
7. The temperature drift detection device of the linear displacement sensor according to claim 1, wherein the incubator comprises an inner container and a housing, the housing is wrapped on the outer side of the inner container, and the data acquisition device is fixed on the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021806329.4U CN212620646U (en) | 2020-08-26 | 2020-08-26 | Temperature drift detection equipment of linear displacement sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021806329.4U CN212620646U (en) | 2020-08-26 | 2020-08-26 | Temperature drift detection equipment of linear displacement sensor |
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| Publication Number | Publication Date |
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| CN212620646U true CN212620646U (en) | 2021-02-26 |
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| CN202021806329.4U Active CN212620646U (en) | 2020-08-26 | 2020-08-26 | Temperature drift detection equipment of linear displacement sensor |
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| TR01 | Transfer of patent right |
Effective date of registration: 20211118 Address after: 455000 No. 2, north of west section of Changjiang Avenue, high tech Zone, Anyang City, Henan Province Patentee after: Anyang Kaidi Magnetic Technology Co.,Ltd. Address before: 455000 North Road, Changjiang Road, Anyang high tech Zone, Henan, China Patentee before: ANYANG KAIDI ELECTROMAGNETIC TECHNOLOGY Co.,Ltd. |