Current sensor test equipment

Abstract

The utility model relates to current sensor test equipment, which comprises a high and low temperature control box, a copper bar, a current source controller, a switch array and a Can communication box, the high and low temperature control box is used for providing different environment temperatures; the copper bar is arranged in the high and low temperature control box; positive and negative electrodes of the current source controller are respectively connected with two ends of the copper bar to form an environment current loop with the copper bar; the switch array is connected in series in an environment current loop; and the Can communication box is connected with the product and is used for collecting an output message of the product. According to the utility model, the switch array is arranged, so that the positive and negative directions of environment current can be controlled, the direction of a product does not need to be turned in the testing process, the testing operation can be simplified, and the testing efficiency is improved; by arranging the upper computer, the test temperature, the test current magnitude and the test current direction can be automatically controlled, output messages of a product can be automatically collected, the automation degree is high, automatic setting and recording of test conditions are achieved, the test efficiency is greatly improved, and the test duration is shortened.

Description

TECHNICAL FIELD

[0001] The utility model belongs to sensor technical field, especially, relate to a current sensor test equipment. BACKGROUND

[0002] Now, new energy automobile industry has very development prospect, and FDC1205 current sensor is necessary use sensor of new energy automobile. In the development process of current sensor, necessary experiment is indispensable, so the test equipment of FDC1205 current sensor is also the key direction of present research.

[0003] At present, the test of FDC1205 current sensor is all manual test, as shown in the figure, Figure 1 When manual testing,

[0004] The product is sequentially and positively threaded through the copper bar and fixed in the high-temperature box, the box door is closed, the temperature of the high-temperature box is manually set to the product test temperature, after the temperature of the high-temperature box reaches, the corresponding current value is input to the copper bar through the current source controller, finally the corresponding output message of the product is collected through the Can communication box, the message is manually recorded in Excel, after the collection is completed, the current source controller is closed, the temperature value, current value and output message of the test are recorded, this is a test point, the product is tested under different temperature and different current environment according to the test requirement, after the forward test is completed, the reverse test is carried out, the product is turned over 180 degrees, and the test is carried out again.

[0005] The current test has the following problems: first, after the forward test of the product is completed, the product needs to be turned over 180 degrees for reverse test, which is complicated to operate; second, the test temperature and test current need to be manually controlled, and the output message needs to be manually recorded, so the test efficiency is low and the time is long. UTILITY MODEL CONTENT

[0006] The utility model discloses a kind of current sensor test equipment, which can effectively solve the problems in the background art.

[0007] To achieve the above object, the utility model is realized by the following technical solutions:

[0008] A kind of current sensor test equipment, comprising

[0009] High-low temperature control box, for providing different environmental temperature;

[0010] Copper bar, set in the high-low temperature control box, for threading product;

[0011] Current source controller, anode and cathode are connected with both ends of the copper bar respectively, and form environmental current loop with copper bar, for providing different environmental current for copper bar;

[0012] a switch array connected in series in the environmental current loop for controlling the positive and negative directions of the environmental current;

[0013] a Can communication box connected with the product for collecting the output message of the product.

[0014] Preferably, the current source controller comprises a current source and a high-precision electronic load.

[0015] Preferably, the switch array comprises a first switch, a second switch, a third switch and a fourth switch.

[0016] One end of the first switch is connected with the positive pole of the current source controller, and the other end is connected with the first end of the copper bar.

[0017] One end of the second switch is connected with the positive pole of the current source controller, and the other end is connected with the second end of the copper bar.

[0018] One end of the third switch is connected with the negative pole of the current source controller, and the other end is connected with the first end of the copper bar.

[0019] One end of the fourth switch is connected with the negative pole of the current source controller, and the other end is connected with the second end of the copper bar.

[0020] Preferably, the switch array is a high-voltage direct-current contactor.

[0021] Preferably, the utility model further comprises

[0022] a PLC controller connected with the switch array for controlling the opening and closing of each switch in the switch array.

[0023] Preferably, the utility model further comprises

[0024] a host computer connected with the PLC controller, the high-low temperature control box, the current source controller and the Can communication box respectively for monitoring, managing and controlling the operation of each device.

[0025] The utility model provides a kind of current sensor test equipment, with following beneficial effects:

[0026] The utility model can control the positive and negative directions of environmental current by setting switch array, without reversing the direction of product in testing process, can simplify test operation, improve test efficiency;By setting host computer, test temperature, test current size and the direction of test current can be automatically controlled, and the output message of product is automatically collected, with high degree of automation, realize the automatic setting and record of test condition, greatly improve test efficiency, shorten test length. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 Structure diagram of manual test in prior art;

[0028] Figure 2 Internal connection relation diagram of test equipment of the utility model;

[0029] Figure 3 Control diagram of switch array of the utility model;

[0030] Figure 4 Structure diagram of test equipment of the utility model.

[0031] In the figure: 1, high and low temperature control box; 2, copper bar; 3, current source controller; 31, current source; 32, high-precision electronic load; 4, switch array; 41, first switch; 42, second switch; 43, third switch; 44, fourth switch; 5, Can communication box; 6, PLC controller; 7, host computer. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the utility model more clear, the technical scheme in the utility model will be described clearly and completely below in combination with the drawings of the utility model.

[0033] The technical scheme of the utility model will be described clearly and completely below in combination with embodiments, obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0034] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like is the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and is not indicative or implied that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] Example

[0037] Reference Figures 1-2 A current sensor testing device, comprising

[0038] High and low temperature control box 1 is used to provide different ambient temperatures;

[0039] Copper busbar 2 is installed inside the high and low temperature control box 1 and is used to carry the product;

[0040] The current source controller 3 has its positive and negative terminals connected to the two ends of the copper busbar 2, forming an ambient current loop with the copper busbar 2, and is used to provide ambient current of different magnitudes to the copper busbar 2;

[0041] Switch array 4, connected in series in the ambient current loop, is used to control the positive and negative directions of the ambient current;

[0042] The CAN communication box 5 is connected to the product and is used to collect the product's output messages.

[0043] In one specific implementation, the current source controller 3 includes a current source 31 and a high-precision electronic load 32. The current source 31 is a high-precision, low-voltage, high-current device that provides ambient current to the product and is the source of current generation. The high-precision electronic load 32 is used in conjunction with a DC source to adjust the magnitude of the current value.

[0044] In one specific implementation, the switch array 4 includes a first switch 41, a second switch 42, a third switch 43, and a fourth switch 44;

[0045] One end of the first switch 41 is connected to the positive terminal of the current source controller 3, and the other end is connected to the first end of the copper busbar 2;

[0046] One end of the second switch 42 is connected to the positive terminal of the current source controller 3, and the other end is connected to the second end of the copper busbar 2;

[0047] One end of the third switch 43 is connected with the negative pole of the current source controller 3, and the other end is connected with the first end of the copper bar 2;

[0048] One end of the fourth switch 44 is connected with the negative pole of the current source controller 3, and the other end is connected with the second end of the copper bar 2.

[0049] When the first switch 41 and the fourth switch 44 are closed, and the second switch 42 and the third switch 43 are opened, the current source controller 3 provides a forward environmental current for the copper bar 2, and when the second switch 42 and the third switch 43 are closed, and the first switch 41 and the fourth switch 44 are opened, the current source controller 3 provides a reverse environmental current for the copper bar 2.

[0050] In one specific embodiment, the switch array 4 is a high-voltage direct-current contactor.

[0051] In one specific embodiment, further comprising

[0052] The PLC controller 6 is connected with the switch array 4, and is used for controlling the opening and closing of each switch in the switch array 4.

[0053] In one specific embodiment, further comprising

[0054] The host computer 7 is connected with the PLC controller 6, the high-low temperature control box 1, the current source controller 3 and the Can communication box 5 respectively, and is used for monitoring, managing and controlling the operation of each device.

[0055] In the embodiment, the PLC controller 6 is connected with the host computer 7 by using a 232 communication protocol, the high-low temperature control box 1 is connected with the host computer 7 by using a TCP / IP protocol, and the Can communication box 5 is connected with the host computer 7 by using a TCP / IP communication connection.

[0056] The working principle of the utility model is as follows:

[0057] When the product is tested, the host computer 7 controls the high-low temperature control box 1 by using a TCP / IP protocol, so that the temperature required for product testing is reached, and then the PLC controller 6 is controlled by using a 232 communication protocol, and then each switch of the switch array 4 is controlled by the PLC controller 6, the forward and reverse directions of the environmental current are controlled in advance, and finally the current source controller 3 is controlled, so that the copper bar 2 is provided with a current size required for product testing, and the Can communication box 5 is controlled to collect the output message of the product.

[0058] The utility model discloses through setting switch array 4, can control the positive and negative direction of environmental current, do not need to adjust the direction of product again in the testing process, can simplify the testing operation, improve the testing efficiency, through setting host computer 7, can automatic control testing temperature, testing current size and the direction of testing current, and automatic collection product's output message, and the degree of automation is high, realizes the automatic setting and record of testing condition, improves testing efficiency greatly, shortens the testing length.

[0059] The utility model is not limited to the test of FDC1205 current sensor, and other similar products can be tested by the device.

[0060] The above examples are only used to illustrate the technical solutions of the utility model, and are not limited thereto; although the utility model has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can still be modified, or some technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A current sensor test apparatus characterized by: The application relates to a high-low temperature control box for providing different environmental temperatures. A copper bar is arranged in the high-low temperature control box and used for penetrating products. A current source controller is connected with two ends of the copper bar and forms an environmental current loop with the copper bar, and is used for providing different environmental currents for the copper bar. A switch array is connected in series in the environmental current loop and used for controlling the positive and negative directions of the environmental current. A Can communication box is connected with the products and used for collecting output messages of the products. The current source controller comprises a current source and a high-precision electronic load.

2. The current sensor test apparatus of claim 1, wherein: The switch array comprises a first switch, a second switch, a third switch and a fourth switch.

3. The current sensor test apparatus of claim 1, wherein: One end of the first switch is connected with the positive pole of the current source controller, and the other end is connected with the first end of the copper bar. One end of the second switch is connected with the positive pole of the current source controller, and the other end is connected with the second end of the copper bar.

4. The current sensor test apparatus of claim 1, wherein: One end of the third switch is connected with the negative pole of the current source controller, and the other end is connected with the first end of the copper bar.

5. A current sensor test apparatus according to claim 4, wherein: One end of the fourth switch is connected with the negative pole of the current source controller, and the other end is connected with the second end of the copper bar.

6. A current sensor test apparatus according to claim 5, wherein: The switch array is a high-voltage direct-current contactor. A PLC controller is further arranged and connected with the switch array, and is used for controlling the opening and closing of the switches in the switch array. An upper computer is further arranged and connected with the PLC controller, the high-low temperature control box, the current source controller and the Can communication box, and is used for monitoring, managing and controlling the operation of the devices.

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