Constant resistance type programmable simulation load device

Abstract

The utility model provides a constant resistance type programmable simulation load device, which comprises a shell, a separator, a circuit board used for integrating a relay and a plurality of gold resistance pieces are arranged in the shell, the separator is arranged in the middle of the shell and comprises two mounting surfaces positioned on the upper side and the lower side of the separator, and the gold resistance pieces are arranged on the circuit board. The plurality of gold resistors are respectively arranged on the two mounting surfaces, the gold resistors on the same mounting surface are arranged at intervals, and the circuit boards are respectively arranged at the intervals of the gold resistors on the two mounting surfaces. Aiming at the defects in the prior art, the utility model provides the constant-resistance type programmable simulation load device which is relatively low in cost, strong in stability and convenient to operate.

Description

Technical Field

[0001] This utility model relates to the field of electronic testing, and in particular to a constant resistance programmable analog load device. Background Technology

[0002] The constant resistance programmable analog load device is based on the fundamental principles of electronic circuits. Through internal control circuits and power devices, it controls the equivalent resistance of the load. It can precisely adjust the load resistance according to user-defined programs or external input signals, thus simulating the operation of loads with different resistance values ​​in a circuit. During operation, the device monitors the voltage across the load and the current flowing through it in real time, and automatically adjusts the conduction level of the power devices according to the set resistance value and Ohm's law to maintain a constant load resistance. Existing technologies typically use power MOSFETs or transistors, controlling their conduction (duty cycle) to simulate programmable loads. However, this is not suitable for simulating loads with PWM drive output ports because electronic loads have internal capacitors and other protective devices connected in parallel, making it impossible to accurately simulate a load value under PWM drive. Therefore, disc-type cement sliding rheostats are often used for simulation testing, but this also suffers from instability. Utility Model Content

[0003] To address the shortcomings of existing technologies, this invention provides a constant resistance programmable analog load device that is low in cost, highly stable, and easy to operate.

[0004] To achieve the above objectives, this utility model provides a constant resistance programmable analog load device, including a housing, a separator, a circuit board for integrating relays, and a plurality of gold resistors disposed in the housing. The separator is disposed in the middle of the housing and includes two mounting surfaces located on its upper and lower sides. The plurality of gold resistors are respectively disposed on the two mounting surfaces and are spaced apart from each other on the same mounting surface. The circuit board is disposed at the intervals between the gold resistors on the two mounting surfaces.

[0005] The advantages of the above technical solution are as follows: By setting a separator, a circuit board for integrating relays, and several gold resistors in the housing, the gold resistors are positioned on two mounting surfaces on the upper and lower sides of the separator, with the gold resistors on the same mounting surface spaced apart. Finally, the circuit board for integrating relays is positioned at the intervals between the gold resistors on the two mounting surfaces. Multiple resistors can be controlled to be connected in parallel on a single line by multiple relays on the circuit board to achieve the effect of parallel current connection. Based on this, by simulating different requirements, the relays can be controlled to conduct different gold resistors, and the corresponding relays connected to the resistors can be controlled to achieve parallel current increase. The resistance value can be arbitrarily controlled to achieve arbitrary adjustment simulation of resistive loads, which is convenient for testing. Commonly used power-type gold resistors are inexpensive and stable, and multiple combinations can achieve high power accumulation, with relatively low cost and strong stability.

[0006] The present invention can be further configured such that: the partition includes a heat dissipation layer, the heat dissipation layer is located between two mounting surfaces, the heat dissipation layer includes a plurality of through slots, and the plurality of through slots are arranged at intervals along the length direction of the partition.

[0007] By further designing the spacer, a heat dissipation layer is incorporated, and the heat dissipation capability is ensured through the design of several spaced through slots within the heat dissipation layer.

[0008] The present invention can be further configured such that: a partition and several pillars are provided on the mounting surface; the partition is located on the other side of the gold resistor relative to the separator; the several pillars are connected between the partition and the mounting surface to form support for the partition; and the circuit board is disposed on the partition.

[0009] By further designing the mounting surface, a partition for circuit board mounting and several support pillars are provided. The partition is positioned on the opposite side of the gold resistor component from the partition, and the support pillars are connected between the partition and the mounting surface to support the partition. The structure is simple and highly stable.

[0010] The present invention can be further configured such that: a mounting plate, a first connector and a second connector are provided on both sides of the separator, the first connector and the second connector are both rectangular, the first connector and the second connector are respectively fixed on the mounting plate and the inner wall of the housing, and the first connector is located above the second connector and is positioned by screw connection.

[0011] With further configuration, mounting plates, a first connector, and a second connector are provided on both sides of the partition. The first and second connectors, both rectangular in shape, are fixed to the mounting plates and the inner wall of the housing, respectively. The first connector is positioned above the second connector and positioned by screwing. The first and second connectors can be fixed to the mounting plates and the housing respectively first, and then the partition can be installed. The second connector provides initial support through the position of the first and second connectors. Finally, the partition is fixed by screwing to complete the installation, which is convenient for installation.

[0012] The present invention may be further configured as follows: including a third connector and a fourth connector, wherein the third connector is fixed on the inner wall of the housing, and the fourth connector is disposed between the third connector and the partition, and forms a first mating part and a second mating part for screwing and positioning with the third connector and the partition, respectively; the first mating part is bent and extends to the upper part of the third connector, and the second mating part is bent and extends to the lower part of the partition.

[0013] By further configuring a third connector and a fourth connector, the third connector is fixed to the inner wall of the housing, and the fourth connector is configured with a first mating part and a second mating part that extend by bending. The first mating part and the second mating part extend to the top of the third connector and the bottom of the separator, respectively, to ensure the strength of the connection. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of Embodiment 1 of the present invention;

[0016] Figure 3 This is a schematic diagram showing the cooperation of the separator, the gold resistor, and the circuit board in Embodiment 1 of this utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the third and fourth connecting members in Embodiment 2 of this utility model;

[0018] The components include: housing 1; first connector 11; third connector 12; partition 2; mounting surface 21; heat dissipation layer 22; through groove 221; partition 23; support column 24; mounting plate 25; second connector 26; fourth connector 27; first mating part 271; second mating part 272; circuit board 3; and gold resistor 4. Detailed Implementation

[0019] An embodiment of the constant resistance programmable analog load device of this utility model is as follows: Figure 1-3As shown: It includes a housing 1, in which a separator 2, a circuit board 3 for integrating relays, and a plurality of gold resistors 4 are disposed. The separator 2 is disposed in the middle of the housing 1 and includes two mounting surfaces 21 located on its upper and lower sides. The plurality of gold resistors 4 are respectively disposed on the two mounting surfaces 21 and are spaced apart from each other on the same mounting surface 21. The circuit board 3 is disposed at the intervals between the gold resistors 4 on the two mounting surfaces 21.

[0020] The partition 2 includes a heat dissipation layer 22, which is located between two mounting surfaces 21. The heat dissipation layer 22 includes a plurality of through slots 221, which are arranged at intervals along the length of the partition 2.

[0021] The mounting surface 21 is provided with a partition 23 and several support columns 24. The partition 23 is located on the other side of the gold resistor 4 opposite to the separator 2. The several support columns 24 are connected between the partition 23 and the mounting surface 21 to form support for the partition 23. The circuit board 3 is disposed on the partition 23.

[0022] The partition 2 is provided with a mounting plate 25, a first connector 11 and a second connector 26 on both sides. The first connector 11 and the second connector 26 are both rectangular. The first connector 11 and the second connector 26 are respectively fixed on the mounting plate 25 and the inner wall of the housing 1, and the first connector 11 is located above the second connector 26 and is positioned by screws.

[0023] Embodiment 2 of the constant resistance programmable analog load device of this utility model is as follows: Figure 4 As shown, the differences from Embodiment 1 are as follows:

[0024] It includes a third connector 12 and a fourth connector 27. The third connector 12 is fixed to the inner wall of the housing 1. The fourth connector 27 is disposed between the third connector 12 and the partition 2, and has a first mating part 271 and a second mating part 272 for screwing and positioning with the third connector 12 and the partition 2, respectively. The first mating part 271 bends and extends above the third connector 12, and the second mating part 272 bends and extends below the partition 2.

[0025] The above examples are merely one preferred embodiment of this utility model. Ordinary variations and substitutions made by those skilled in the art within the scope of this utility model's technical solution are all included within the protection scope of this utility model.

Claims

1. A constant resistance programmable analog load device comprising a housing, characterized by: The shell is provided with a partition, a circuit board for integrated relay and a plurality of gold resistance pieces, the partition is arranged at the middle of the shell and includes two mounting surfaces on its upper and lower sides, the plurality of gold resistance pieces are arranged on the two mounting surfaces respectively and are arranged at intervals between the gold resistance pieces on the same mounting surface, and the circuit board is arranged at the intervals of the gold resistance pieces on the two mounting surfaces respectively.

2. The constant resistance programmable analog load device of claim 1, wherein: The partition includes a heat dissipation layer between the two mounting surfaces, and the heat dissipation layer includes a plurality of through grooves arranged at intervals along the length direction of the partition.

3. The constant resistance programmable analog load device of claim 2, wherein: The mounting surface is provided with a partition plate and a plurality of support columns, the partition plate is arranged at the other side of the gold resistance piece relative to the partition, the plurality of support columns are connected between the partition plate and the mounting surface to support the partition plate, and the circuit board is arranged on the partition plate.

4. Constant resistance type programmable analog load device according to claim 1 or 2 or 3, characterized in that: The two sides of the partition are provided with mounting plates, first connecting pieces and second connecting pieces, the first connecting pieces and the second connecting pieces are both arranged in a rectangular shape, the first connecting pieces and the second connecting pieces are fixed on the mounting plates and the inner wall of the shell respectively, and the first connecting pieces are located above the second connecting pieces and are positioned by screwing.

5. Constant resistance type programmable analog load device according to claim 1 or 2 or 3, characterized in that: The partition is provided with third connecting pieces and fourth connecting pieces, the third connecting pieces are fixed on the inner wall of the shell, the fourth connecting pieces are arranged between the third connecting pieces and the partition and are formed with first and second matching parts for screwing with the third connecting pieces and the partition respectively, the first matching part is bent and extended above the third connecting pieces, and the second matching part is bent and extended below the partition.

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