Unattended current sensor calibration equipment
By using unattended current sensor calibration equipment, modular tooling fixtures, and automated control, the problems of low production efficiency and safety of current sensor calibration equipment have been solved, achieving efficient and safe batch calibration and quality control.
Patent Information
- Application Number
- CN202421385272.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-18
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2034-06-18
AI Technical Summary
Existing current sensor calibration equipment suffers from problems such as low production efficiency, difficulty in controlling quality consistency, and high cost. In particular, manual calibration is inefficient and dangerous for automotive-grade products with high precision requirements.
Design an unattended current sensor calibration device that uses modular calibration fixtures and high and low temperature chambers to achieve automated temperature and current regulation. Combined with CAN bus to read measurement values, batch calibration is performed through fully automated control, avoiding human contact with dangerous points.
It enables efficient and safe batch calibration of current sensors, improves production efficiency, reduces costs, ensures product quality consistency and safety, and supports small-batch and mass production.
Smart Images
Figure CN223611692U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to current sensor calibration technical field especially relates to a kind of current sensor calibration equipment of unattended. BACKGROUND
[0002] Current sensor is a detection device, can sense the information of measured current, and can change the information sensed into the electrical signal or other required form of information output in compliance with certain standard requirements according to certain law, to meet the requirements of information transmission, processing, storage, display, recording and control, and the current sensor based on the shunt principle of shunt is widely used in new energy automobile current monitoring, power grid energy storage, uninterruptible power supply, charging station and other fields.
[0003] The current sensor based on the shunt principle belongs to high-precision component, and the comprehensive accuracy of the product is influenced by alloy material size, welding accuracy, environmental temperature and other factors, so as to meet the requirements of vehicle-level high precision, the real-time measurement data of product needs to be calibrated, calibration is pre-shipment quality inspection of product, and currently, manual measurement equipment is used to measure and calibrate single current sensor in domestic, which has the disadvantages of low production efficiency, difficult quality consistency control and high comprehensive production cost, therefore, we provide a kind of current sensor calibration equipment to solve the problem. UTILITY MODEL CONTENT
[0004] The utility model aims at solving the shortcomings in the prior art, and provides a kind of current sensor calibration equipment of unattended to solve this problem.
[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:
[0006] A kind of current sensor calibration equipment of unattended is designed, including industrial control cabinet and high-low temperature box, the outside of the industrial control cabinet is installed with display, the inner chamber of the industrial control cabinet is slidably connected with keyboard bracket by slide rail, the upper end of the keyboard bracket is placed with keyboard and mouse, the outside of the industrial control cabinet is installed with current source, the outside of the industrial control cabinet is installed with industrial computer, the outside of the high-low temperature box is hingedly connected with operating door, the outside of the high-low temperature box is installed with door lock that is inserted with it, the outside of the high-low temperature box is installed with operating touch screen, the outside of the high-low temperature box is installed with power switch, the inner chamber of the high-low temperature box is installed with support frame, the upper end of the support frame is inserted with calibration tool fixture by inserting column, the upper end of the calibration tool fixture is placed with multiple current sensor bodies.
[0007] Preferably, the outside of the industrial control cabinet is installed with UPS power supply.
[0008] Preferably, the outside of the industrial control cabinet is provided with a DC power supply.
[0009] Preferably, the outside of the operating door is provided with an observation window.
[0010] Preferably, the outside of the high-low temperature box is provided with a notch, the inner cavity of the notch is provided with a heat dissipation cover, the heat dissipation cover is locked with the high-low temperature box through a cover lock, and equidistant heat dissipation grooves are arranged on the outside of the heat dissipation cover.
[0011] Preferably, the left side of the high-low temperature box is provided with a threading hole.
[0012] The current sensor calibration equipment without attendance provided by the utility model has the beneficial effects that:
[0013] 1. By using the modular calibration tool clamp, small-batch trial production can be realized, and the modular calibration tool clamp can be cascaded to realize batch calibration production.
[0014] 2. By automatically adjusting the temperature and current of calibration, full-automatic unattended operation is realized, the utilization rate of personnel is improved, the working current of calibration is large, and the maximum can reach 1500A, which has certain danger, the high-low temperature box is designed in a closable sealing mode through an operating door, full-automatic control is realized, workers are prevented from contacting dangerous points, personnel safety is ensured, automatic execution is realized, production efficiency is improved, production cost is reduced, IT management is realized, process data in the production process are recorded in detail, and product quality is ensured. BRIEF DESCRIPTION OF DRAWINGS
[0015] Fig. 1 It is a whole front view structural schematic diagram of the current sensor calibration equipment without attendance provided by the utility model;
[0016] Fig. 2 It is an internal structure schematic diagram of the high-low temperature box of the current sensor calibration equipment without attendance provided by the utility model;
[0017] Fig. 3 It is a three-dimensional structure schematic diagram of the industrial control cabinet of the current sensor calibration equipment without attendance provided by the utility model.
[0018] In the drawing: industrial control cabinet 1, display 2, UPS power supply 3, DC power supply 4, keyboard bracket 5, current source 6, industrial computer 7, high-low temperature box 8, operating door 9, door lock 10, observation window 11, operating touch screen 12, heat dissipation cover 13, cover lock 14, heat dissipation groove 15, power switch 16, support frame 17, plug column 18, calibration tool clamp 19, current sensor body 20, threading hole 21. DETAILED DESCRIPTION
[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.
[0020] Referring to Figs. 1-3 The utility model provides a current sensor calibration equipment of unattended, including industrial control cabinet 1 and high low temperature box 8, the outside installation of industrial control cabinet 1 has display 2, the outside installation of industrial control cabinet 1 has UPS power supply 3, as spare power supply, prevent accidental power failure damage industrial computer 7, can guarantee data security, the outside installation of industrial control cabinet 1 has direct current power supply 4, it is convenient to maintain the current stability of whole calibration equipment, the inner chamber of industrial control cabinet 1 is slidably connected with keyboard bracket 5 through slide rail, the upper end of keyboard bracket 5 is placed with keyboard and mouse, the outside installation of industrial control cabinet 1 has current source 6, the outside installation of industrial control cabinet 1 has industrial computer 7, through program control current source 6 makes it for the current sensor 20 to be calibrated, provides high accuracy big constant current, and the highest current can reach 1500A.
[0021] The outside of high low temperature box 8 is hingedly connected with an operating door 9, an observation window 11 is installed on the outside of the operating door 9, and the inside of the high low temperature box 8 can be observed through the observation window 11 to detect the state of the calibration process, which is convenient to use. A door lock 10 is installed on the outside of the high low temperature box 8. An operation touch screen 12 is installed on the outside of the high low temperature box 8. A power switch 16 is installed on the outside of the high low temperature box 8. A threading hole 21 is arranged on the left side of the high low temperature box 8. The threading hole 21 is a wire hole with a diameter of 15 cm. The communication cable, circuit cable, and temperature acquisition cable can be introduced into the inside of the high low temperature box 8 through the threading hole 21, which is convenient to connect and use. The temperature environment during calibration is provided by the high low temperature box 8, which is convenient to use.
[0022] A support frame 17 is installed in the inner cavity of the high low temperature box 8. A calibration tool clamp 19 is inserted into the support frame 17 through a plug column 18. A plurality of current sensor bodies 20 are placed on the upper end of the calibration tool clamp 19. The calibration tool clamp 19 serves as a carrier for batch calibration of the current sensor 20. A single calibration tool clamp 19 can place up to 16 current sensors 20. Batch calibration production can be realized through the "cascade" of multiple calibration tool clamps 19. The CAN bus arranged in the calibration tool clamp 19 is used to read the measurement values of the sampling current sensor 20.
[0023] The high-low temperature box 8 is provided with a notch, the inner cavity of the notch is provided with a heat dissipation cover 13, the heat dissipation cover 13 is locked with the high-low temperature box 8 through a cover lock 14, the outer side of the heat dissipation cover 13 is equidistantly provided with a heat dissipation groove 15, heat generated by the high-low temperature box 8 during operation is conveniently dissipated, and the heat dissipation cover 13 is conveniently disassembled by opening the cover lock 14, so that installation, disassembly and dust cleaning operations are facilitated.
[0024] Working principle: the display 2, the UPS power supply 3, the mouse and the keyboard are connected with the industrial computer 7, the direct current power supply 4 is connected with the current source 6, the industrial computer 7 is connected with the current source 6 for control, the operation touch screen 12 is connected with the power switch 16, this technology is the existing programming control technology, which will not be described in detail here, in use, the equipment is connected to the power and started, the normal equipment is checked and confirmed, the multiple products (the current sensor body 20) to be detected and calibrated are placed on the calibration tool clamp 19 by manual, the door lock 10 is opened, the operation door 9 is opened, the calibration tool clamp 19 is inserted on the upper end of the insertion column 18 on the support frame 17, the calibration tool clamp 19 is conveniently and stably supported, the communication quick connector in the high-low temperature box 8 is connected with the CAN bus in the calibration tool clamp 19, the operation door 9 is closed, the keyboard support 5 is pulled out, the keyboard and mouse and the display 2 are used for operation, the temperature during detection and calibration of the product is set through the operation touch screen 12, the temperature of the high-low temperature box 8 is adjusted through the operation touch screen 12, when the temperature reaches the set value, the temperature is preserved for a set time, so that the product is uniformly heated, then the current source 6 is operated to sequentially output the pre-set current value, the CAN bus in the calibration tool clamp 19 reads the sampling measurement value from each product, the above-mentioned setting and calibration temperature operation is repeated until the data acquisition at all temperature points is completed, according to the collected original measurement data, the curve relationship between the product "current measurement value" and "use environment temperature" is calculated by using the "least square method", and the polynomial coefficient is written into the content EEPROM of each product through the CAN bus, the temperature of the high-low temperature box 8 is adjusted to normal temperature, the calibration tool clamp 19 and the current sensor body 20 are taken out by workers in sequence, and finally the measurement and calibration of the product are completed, the modular calibration tool clamp 19 is used, small batch test production can be realized, the modular calibration tool clamp can be cascaded, batch calibration production can be realized, the temperature and current of the calibration are automatically adjusted, full-automatic unattended operation is realized, the utilization rate of personnel is provided, the working current of calibration is large, and the maximum can reach 1500A, which has certain danger, the high-low temperature box 8 is designed in a closed mode and can be opened and closed through the operation door, the whole process is controlled by automation, the workers are prevented from contacting the dangerous point, the safety of the workers is ensured, the automatic execution improves the production efficiency, reduces the production cost, realizes IT management, detailed production process data is recorded, and the product quality is ensured.
[0025] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.
Claims
1. An unattended current sensor calibration device, comprising an industrial control cabinet (1) and a high and low temperature chamber (8), characterized in that, A monitor (2) is installed on the outside of the industrial control cabinet (1). A keyboard tray (5) is movably connected to the inner cavity of the industrial control cabinet (1) via a slide rail. A keyboard and mouse are placed on the upper end of the keyboard tray (5). A current source (6) is installed on the outside of the industrial control cabinet (1). An industrial computer (7) is installed on the outside of the industrial control cabinet (1). An operating door (9) is movably hinged to the outside of the high and low temperature chamber (8). A door lock (10) is installed on the outside of the high and low temperature chamber (8) and plugged into it. An operation touch screen (12) is installed on the outside of the high and low temperature chamber (8). A power switch (16) is installed on the outside of the high and low temperature chamber (8). A support frame (17) is installed in the inner cavity of the high and low temperature chamber (8). A calibration fixture (19) is inserted into the upper end of the support frame (17) through a plug (18). Multiple current sensor bodies (20) are placed on the upper end of the calibration fixture (19). A CAN bus is installed inside the calibration fixture (19).
2. The unattended current sensor calibration device according to claim 1, characterized in that, A UPS power supply (3) is installed on the outside of the industrial control cabinet (1).
3. The unattended current sensor calibration device according to claim 1, characterized in that, A DC power supply (4) is installed on the outside of the industrial control cabinet (1).
4. The unattended current sensor calibration device according to claim 1, characterized in that, An observation window (11) is installed on the outside of the operating door (9).
5. The unattended current sensor calibration device according to claim 1, characterized in that, The high and low temperature chamber (8) has a slot on its outer side, and a heat dissipation cover (13) is provided in the inner cavity of the slot. The heat dissipation cover (13) is locked to the high and low temperature chamber (8) by a cover lock (14). Heat dissipation grooves (15) are provided at equal intervals on the outer side of the heat dissipation cover (13).
6. The unattended current sensor calibration device according to claim 1, characterized in that, A wire hole (21) is provided on the left side of the high and low temperature chamber (8).