Resistance simulation circuit and resistance simulator board card

Abstract

The utility model belongs to the resistance simulation technology, and particularly relates to a resistance simulation circuit and a resistance simulator board card, and the resistance simulation circuit comprises a plurality of reference resistors which are connected in series; the plurality of magnetic latching relays are respectively connected with the corresponding reference resistors in parallel; and each magnetic latching relay is suitable for receiving a switch-on or switch-off control signal of the processor module to trigger the switch-on or switch-on of the corresponding reference resistor so as to adjust the output resistance value of the resistance analog circuit. According to the resistance simulation circuit, a traditional relay is replaced by the magnetic latching relays, only the corresponding magnetic latching relays need to be switched on or switched off when the output resistance value is adjusted, power does not need to be continuously supplied to the magnetic latching relays, and therefore electric energy does not need to be consumed; therefore, the power consumption of the resistance board card can be obviously reduced in a multi-path and large-resistance application scene.

Description

Technical Field

[0001] The utility model belongs to resistance simulation technology, and specifically relates to a resistance simulation circuit and a resistance simulator board card. Background Art

[0002] The traditional resistor simulator board solution uses conventional relay control to achieve the selection of resistor values ​​of different ranges. The larger the resistance range, the more relays are required. The working condition of traditional relays requires continuous power supply. As the resistance value decreases and the number of channels increases, the number of relays will also increase and double, so the power consumption required by the single board will continue to increase.

[0003] Therefore, in order to solve the problem that the traditional resistor simulator board must be continuously powered to maintain the resistance value, resulting in high power consumption, it is a technical problem that urgently needs to be solved in this field. Utility Model Content

[0004] In order to solve the technical problems mentioned in the background technology, the utility model provides a resistance simulation circuit and a resistance simulator board.

[0005] The utility model provides a resistance simulation circuit, comprising:

[0006] A number of reference resistors arranged in series;

[0007] A plurality of magnetic latching relays are respectively connected in parallel with corresponding reference resistors; and

[0008] Each magnetic latching relay is suitable for receiving an on or off control signal of the processor module to trigger the corresponding reference resistor to be disconnected or connected, so as to adjust the output resistance value of the resistance simulation circuit.

[0009] In another aspect, the utility model further provides a resistance simulator board, comprising:

[0010] The resistance simulation circuit as described above; the processor module sends the on or off control signal to the magnetic latching relay.

[0011] Furthermore, the resistance simulator board also includes: a plurality of drive modules corresponding to each magnetic latching relay one by one; and

[0012] The processor module is suitable for driving each driving module to trigger the corresponding magnetic latching relay to control the corresponding reference resistor to be connected or disconnected.

[0013] Furthermore, the normally open terminals of the magnetic latching relay are respectively connected to two ends of a reference resistor.

[0014] Further, the model of the magnetic latching relay is HFD5 / 5 relay; and

[0015] The fifth and sixth pins of the HFD5 / 5 relay are connected to two ends of the reference resistor as normally open terminals.

[0016] Furthermore, the model of the driver module is BL8023C driver chip;

[0017] The on or off control signal of the processor module corresponds to two pulse trigger signals and is respectively connected to the two input terminals of the BL8023C driver chip;

[0018] The two output ends of the BL8023C driver chip are respectively connected to the normally open terminals of the HFD5 / 5 relay.

[0019] The beneficial effect of the utility model is that the resistance simulation circuit of the utility model replaces the traditional relay with the magnetic latching relay. When adjusting the output resistance value, it only needs to control the corresponding magnetic latching relay to be turned on or off through the processor module, and it can be powered off and maintained. There is no need to continuously power the magnetic latching relay, so no electric energy is consumed. Therefore, the power consumption of the resistor board can be significantly reduced in the resistor board in multi-channel and large resistance application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0021] Figure 1 is a design block diagram of a resistance simulation circuit provided by some embodiments;

[0022] Figure 2 is a partial actual circuit diagram of a resistance simulation circuit provided by some embodiments;

[0023] Figure 3 is a principle block diagram of a resistance simulator board provided in some embodiments;

[0024] Figure 4 is a circuit diagram of a driving module provided in some embodiments. DETAILED DESCRIPTION

[0025] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0026] like Figure 1 and Figure 2As shown, at least one embodiment provides a resistance simulation circuit, including: a plurality of reference resistors (resistor R1, resistor R2...resistor R_N-1, resistor R_N) connected in series; a plurality of magnetic latching relays, respectively arranged in parallel with the corresponding reference resistors; and each magnetic latching relay is adapted to receive an on or off control signal of a processor module to trigger the corresponding reference resistor to be disconnected or connected, so as to adjust the output resistance value of the resistance simulation circuit. Port 1 and port 2 in the figure correspond to an external circuit to output the resistance value.

[0027] Specifically, the resistance simulation circuit of this embodiment replaces the traditional relay with a magnetic latching relay. It only needs to turn on or off the corresponding magnetic latching relay when adjusting the output resistance value, and there is no need to continuously power the magnetic latching relay. This can significantly reduce the power consumption of the resistance board in multi-channel, large resistance application scenarios.

[0028] Specifically, Figure 1 Port 1 and port 2 are the two ends of this resistance simulation circuit; Figure 2 RES_IN_CH1 is equivalent to Figure 1 Port 1 in RES_IN_CH2 is equivalent to Figure 1 Port 2 in; when any magnetic latching relay is turned on, the reference resistor connected in parallel with it will be short-circuited, and when any magnetic latching relay is turned off, the reference resistor connected in parallel with it will not be short-circuited, so as to be connected to the circuit, thereby adjusting the output resistance value as required.

[0029] like Figure 3 and Figure 4 As shown, some embodiments further provide a resistance simulator board, comprising: the resistance simulation circuit as described above; a processor module, sending the on or off control signal to the magnetic latching relay.

[0030] Specifically, the processor module adopts, for example but not limited to, an STM32 series single-chip microcomputer chip.

[0031] In some embodiments, the resistance simulator board also includes: a plurality of driving modules corresponding to each magnetic latching relay one by one; and the processor module is suitable for driving each driving module to trigger the corresponding magnetic latching relay to control the corresponding reference resistor to be connected or disconnected.

[0032] See also Figure 2 In some embodiments, the normally open terminals of the magnetic latching relay are respectively connected to two ends of a reference resistor. Specifically, the model of the magnetic latching relay is an HFD5 / 5 relay; and the fifth and sixth pins of the HFD5 / 5 relay are respectively connected to two ends of a reference resistor as normally open terminals.

[0033] See also Figure 3 and Figure 4 In some embodiments, the model of the driving module is a BL8023C driving chip; the on or off control signal of the processor module corresponds to two pulse trigger signals and is respectively connected to the two input ends of the BL8023C driving chip; the two output ends of the BL8023C driving chip are respectively connected to the normally open wiring terminals of the HFD5 / 5 relay.

[0034] Specifically, the resistance simulator of this embodiment is particularly suitable for resistance boards in application scenarios that require multiple channels and large resistance values. By utilizing the characteristics of the magnetic latching relay, the power consumption of the resistance board can be significantly reduced.

[0035] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A resistance simulation circuit, characterized in that: include: A number of reference resistors arranged in series; A plurality of magnetic latching relays are respectively arranged in parallel with corresponding reference resistors; as well as Each magnetic latching relay is suitable for receiving an on or off control signal of the processor module to trigger the corresponding reference resistor to be disconnected or connected, so as to adjust the output resistance value of the resistance simulation circuit.

2. A resistance simulator board, characterized in that: include: The resistance simulation circuit as claimed in claim 1; The processor module sends the on or off control signal to the magnetic latching relay.

3. The resistor simulator board according to claim 2, characterized in that: Also includes: A plurality of drive modules corresponding to each magnetic latching relay one by one; as well as The processor module is suitable for driving each driving module to trigger the corresponding magnetic latching relay to control the corresponding reference resistor to be connected or disconnected.

4. The resistor simulator board according to claim 2, characterized in that: The normally open terminals of the magnetic latching relay are respectively connected to two ends of the reference resistor.

5. The resistor simulator board according to claim 4, characterized in that: The model of the magnetic latching relay is HFD5 / 5 relay; and The fifth and sixth pins of the HFD5 / 5 relay are connected to two ends of the reference resistor as normally open terminals.

6. The resistor simulator board according to claim 3, characterized in that: The model of the driver module is BL8023C driver chip; The on or off control signal of the processor module corresponds to two pulse trigger signals and is respectively connected to the two input terminals of the BL8023C driver chip; The two output ends of the BL8023C driver chip are respectively connected to the normally open terminals of the HFD5 / 5 relay.

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