CN219978727U - Device for controlling on-off through standard current signal - Google Patents
Device for controlling on-off through standard current signal Download PDFInfo
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- CN219978727U CN219978727U CN202321093683.0U CN202321093683U CN219978727U CN 219978727 U CN219978727 U CN 219978727U CN 202321093683 U CN202321093683 U CN 202321093683U CN 219978727 U CN219978727 U CN 219978727U
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- state relay
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- 239000007787 solid Substances 0.000 claims abstract description 10
- 239000003990 capacitor Substances 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 abstract description 2
- 230000001276 controlling effect Effects 0.000 description 11
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
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Abstract
The utility model discloses a device for controlling on-off through a standard current signal, which comprises a circuit board, wherein a current sensor, a sliding rheostat, an operational amplifier and a solid-state relay are integrated on the circuit board; the circuit sensor and the sliding rheostat are respectively and electrically connected with the operational amplifier; the operational amplifier is electrically connected with the solid-state relay; and a resistor, an LED and a capacitor are integrated between the operational amplifier and the solid-state relay on the circuit board. The utility model is a device for controlling on-off through standard current signals, and realizes that any current value in 4-20mA current signals can control the relay to be attracted and disconnected by adjusting the sliding rheostat, and the current is collected through the Hall current sensor without current consumption; the method has the advantages of low cost, adjustable current, stability, reliability and noiseless solid state relay, and adopts the Hall sensing principle to collect the current, thereby avoiding the consumption of current by resistor voltage division.
Description
Technical Field
The utility model relates to the technical field of signal on-off control, in particular to a device for controlling on-off through a standard current signal.
Background
At present, regarding the mode of converting current into voltage or collecting current, the current is divided by resistors, the current flows through the resistors, and the magnitude of the current value is calculated according to the voltage values at two ends of the resistors at the moment, basically, 4-20mA current signals with data are measured, data processing is carried out after the current is collected, and corresponding actions such as controlling the on-off of external signals are carried out after the data processing, but the mode has the problems that current is consumed on the resistors, the current is not adjustable and the like. Therefore, the utility model provides a device for controlling on-off through a standard current signal, which is used for solving the problems of current consumption, non-adjustable current and the like of the resistor voltage division.
Disclosure of Invention
In view of the above-described drawbacks or shortcomings of the prior art, it is desirable to provide a device that is controlled to be turned on and off by a standard current signal.
The utility model provides a device for controlling on-off through a standard current signal, which comprises a circuit board, wherein a current sensor, a sliding rheostat, an operational amplifier and a solid-state relay are integrated on the circuit board; the current sensor and the sliding rheostat are respectively and electrically connected with the operational amplifier; the operational amplifier is electrically connected with the solid-state relay; and a resistor, an LED and a capacitor are integrated between the operational amplifier and the solid-state relay on the circuit board.
Preferably, the current sensor model is WCS38a25.
Preferably, the chip model of the operational amplifier is TLC2272.
Preferably, the solid state relay is of the type SSR-DD2205HK.
Preferably, the sliding rheostat is of the type R_3386P_US.
Preferably, the integrated system of the circuit board is powered by 5V direct current voltage.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model is a device for controlling on-off through standard current signals, 4-20mA current is collected and then calculated through an operational amplifier, and is directly converted into 0-5V voltage signals to drive an SSR solid state relay, so that the on-off of the solid state relay is realized, and whether an external signal is communicated is controlled; through the solid state relay, a Hall mode is adopted, namely, the non-contact mode is adopted, and current cannot be consumed in a circuit; the solid state relay has the advantages of low cost, adjustable current, stability, reliability and no noise, and adopts the Hall sensing principle to collect the current, thereby avoiding the consumption of current by resistor voltage division.
In addition, by adjusting the slide rheostat, the relay can be controlled to be attracted and disconnected by any current value in a 4-20mA current signal.
It should be understood that the description in this summary is not intended to limit the critical or essential features of the embodiments of the utility model, nor is it intended to limit the scope of the utility model.
Other features of the present utility model will become apparent from the description that follows.
Drawings
Other features, objects and advantages of the present utility model will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the accompanying drawings in which:
FIG. 1 is a block diagram of a hardware configuration of a device for controlling on/off by a standard current signal according to an embodiment of the present utility model;
FIG. 2 is a schematic circuit diagram of a device for controlling on-off by a standard current signal;
fig. 3 is an external interface diagram of a device for controlling on-off by a standard current signal.
Detailed Description
The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be noted that, for convenience of description, only the portions related to the utility model are shown in the drawings.
It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.
Referring to fig. 1 to 3, the embodiment of the utility model provides a device for controlling on-off through a standard current signal, and by adjusting a sliding rheostat, any current value in a 4-20mA current signal can control a relay to be switched on or off, and a hall current sensor is used for collecting current without consuming current; the method has the advantages of low cost, adjustable current, stability, reliability and noiseless solid state relay, and adopts the Hall sensing principle to collect the current, thereby avoiding the consumption of current by resistor voltage division.
The device for controlling on-off through the standard current signal comprises a circuit board, wherein a current sensor, a slide rheostat, an operational amplifier and a solid-state relay are integrated on the circuit board; the current sensor and the slide rheostat are respectively and electrically connected with the operational amplifier; the operational amplifier is electrically connected with the solid-state relay; and a resistor, an LED and a capacitor are integrated between the operational amplifier and the solid-state relay on the circuit board.
Referring to fig. 2, the current sensor model is WCS38a25, and the interfaces 3 and 4 are connected with a 5V dc power supply for supplying power to the whole system; ip+ and IP-correspond to currents in the circuit measured in series, and the currents flow in from ip+ and out from IP-.
The current sensor adopts a Hall sensor principle, and is not obtained by calculating voltage through resistance.
In a preferred embodiment, the op-amp has a die size TLC2272.
In a preferred embodiment, the solid state relay is SSR-DD2205HK, COM and NO are connected to an external circuit to be turned on or off, the resistance of the sliding rheostat is adjusted, and when the LED is on, the solid state relay is attracted, COM and NO are turned on, so that control over external equipment is achieved.
Any current value can be used for realizing relay actuation by adjusting the sliding rheostat.
In a preferred embodiment, the sliding resistor is of the type r_3386p_us.
In a preferred embodiment, the integrated system of the circuit board is powered by a 5V dc voltage, but not necessarily 5V, and other voltage inputs may be implemented by voltage regulator regulation within the circuit board.
In the description of the present specification, the terms "connected," "mounted," "secured," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present specification, the terms "one embodiment," "some embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (6)
1. The device for controlling on-off through the standard current signal is characterized by comprising a circuit board, wherein a current sensor, a sliding rheostat, an operational amplifier and a solid-state relay are integrally arranged on the circuit board; the current sensor and the sliding rheostat are respectively and electrically connected with the operational amplifier; the operational amplifier is electrically connected with the solid-state relay; and a resistor, an LED and a capacitor are integrated between the operational amplifier and the solid-state relay on the circuit board.
2. The device for controlling on/off via a standard current signal according to claim 1, wherein the current sensor is WCS38a25.
3. The apparatus of claim 1, wherein the operational amplifier has a die type TLC2272.
4. The device for controlling on-off by a standard current signal according to claim 1, wherein the solid state relay is of the type SSR-DD2205HK.
5. The device for controlling on/off by a standard current signal according to claim 1, wherein the sliding rheostat is of the type r_3386p_us.
6. The device for controlling on-off by standard current signal according to claim 1, wherein the integrated system of the circuit board is powered by 5V dc voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321093683.0U CN219978727U (en) | 2023-05-09 | 2023-05-09 | Device for controlling on-off through standard current signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321093683.0U CN219978727U (en) | 2023-05-09 | 2023-05-09 | Device for controlling on-off through standard current signal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219978727U true CN219978727U (en) | 2023-11-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321093683.0U Active CN219978727U (en) | 2023-05-09 | 2023-05-09 | Device for controlling on-off through standard current signal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219978727U (en) |
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2023
- 2023-05-09 CN CN202321093683.0U patent/CN219978727U/en active Active
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