CN219348965U - Analog signal generating device - Google Patents
Analog signal generating device Download PDFInfo
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- CN219348965U CN219348965U CN202320779979.1U CN202320779979U CN219348965U CN 219348965 U CN219348965 U CN 219348965U CN 202320779979 U CN202320779979 U CN 202320779979U CN 219348965 U CN219348965 U CN 219348965U
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Abstract
The utility model discloses a generating device of analog signals, which relates to the field of electricity, and comprises an adjustable resistor, a first resistor and a serial circuit connected in series with a connecting part, wherein the power module can generate voltage signals, when a load is connected in series with the circuit through a first serial terminal and a second serial terminal of the connecting part, the device can generate current signals to be input into the load, and when the load is connected in parallel with the two ends of the first resistor through a first parallel terminal and a second parallel terminal of the two ends of the first resistor, the device can generate voltage signals to be input into the load, wherein the adjustable resistor realizes the change of the sizes of the current signals and the voltage signals, and the device has small volume, is convenient to carry and is more convenient and efficient.
Description
Technical Field
The utility model relates to the field of electricity, in particular to an analog signal generating device.
Background
When electrical engineering and field automation are debugged, loop test is often needed between devices, and loop test needs to use digital signals and analog signals, wherein the digital input signals, the digital output signals and the analog output signals can be easily realized, but the analog input signals usually need to be simulated by means of a signal generator to realize signals such as voltage or current, but the signal generator is large in size and not easy to carry, and in addition, more instruments are troublesome to carry when electrical engineering and field automation are debugged, so that the method is inconvenient and efficient.
Disclosure of Invention
The utility model aims to provide a generating device of an analog signal, which is characterized in that a series circuit formed by connecting an adjustable resistor, a first resistor and a connecting part in series is connected to two ends of a power supply module in parallel, wherein the power supply module can generate a voltage signal, when a load is connected in series in the circuit through a first series terminal and a second series terminal of the connecting part, the device can generate a current signal to be input into the load, and when the load is connected in parallel to two ends of the first resistor through a first parallel terminal and a second parallel terminal of the two ends of the first resistor, the device can generate the voltage signal to be input into the load, wherein the adjustable resistor realizes the change of the sizes of the current signal and the voltage signal, and the device has small volume, is convenient to carry and is more convenient and efficient.
In order to solve the above technical problems, the present utility model provides an analog signal generating device, including:
the power supply device comprises a power supply module, an adjustable resistor, a first resistor and a connecting part, wherein the adjustable resistor, the first resistor and the connecting part are connected in series, and the circuits connected in series are connected in parallel at two ends of the power supply module;
the first parallel terminal and the second parallel terminal are respectively arranged at two ends of the first resistor and are used for being respectively connected with two ends of a load;
the connection portion includes a first series terminal and a second series terminal for direct connection or connection with both ends of the load, respectively.
Preferably, the method further comprises:
the switch module is connected in series with the adjustable resistor, the first resistor and the circuit with the connecting parts connected in series.
Preferably, the method further comprises:
the current collection module is connected with the adjustable resistor, the first resistor and the circuit after the connection part is connected in series and is used for collecting current in the circuit.
Preferably, the current collection module is a multimeter.
Preferably, the adjustable resistors are N groups of adjustable resistor modules connected in parallel, each adjustable resistor module comprises a resistor and a switch connected in series, and N is a positive integer.
Preferably, the adjustable resistor is a potentiometer.
Preferably, the power module is a battery pack.
Preferably, the method further comprises:
the M second resistors are connected in series with the adjustable resistor, the first resistor and the connecting part in series in a loop;
and M+1 third parallel terminals, wherein M+1 third parallel terminals are respectively arranged at two ends of each second resistor, and M is a positive integer.
Preferably, the second resistor is one and has the same resistance as the first resistor.
According to the generation device of the analog signal, the adjustable resistor, the first resistor and the serial circuit formed by connecting the connecting parts in series are connected to the two ends of the power supply module in parallel, wherein the power supply module can generate a voltage signal, when a load is connected in series in the circuit through the first serial terminal and the second serial terminal of the connecting parts, the device can generate a current signal to be input into the load, and when the load is connected in parallel to the two ends of the first resistor through the first parallel terminal and the second parallel terminal of the two ends of the first resistor, the device can generate the voltage signal to be input into the load, the adjustable resistor can change the sizes of the current signal and the voltage signal, and the device is small in size, convenient to carry and more convenient and efficient.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required in the prior art and the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of an analog signal generating device according to the present utility model;
fig. 2 is a schematic structural diagram of another analog signal generating device according to the present utility model.
Detailed Description
The core of the utility model is to provide a generating device of analog signals, which is connected in parallel to two ends of a power module DC through a series circuit formed by connecting an adjustable resistor R, a first resistor R1 and a connecting part 101 in series, wherein the power module DC can generate voltage signals, when a load is connected in series in the circuit through a first series terminal 111 and a second series terminal 121 of the connecting part 101, the device can generate current signals to be input into the load, and when the load is connected in parallel to two ends of the first resistor R1 through a first parallel terminal 102 and a second parallel terminal 103 at two ends of the first resistor R1, the device can generate voltage signals to be input into the load, wherein the adjustable resistor R realizes the change of the sizes of the current signals and the voltage signals, and the device has smaller volume, is convenient to carry and is more convenient and efficient.
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In electrical engineering and field automation debugging, loop tests are often required to be performed between DCS (Distributed Control System ), PLC (Programmable Logic Controller, programmable logic controller) and field devices, DI, DO, AO signals can be easily implemented, but AI analog quantity input usually requires the simulation of signals by means of a signal generator.
The traditional method is to input signals such as voltage or current and the like into DCS and PLC corresponding to the on-site instrument measured values by a signal generator to simulate. The instruments carried in the field construction and debugging are more and relatively troublesome.
The utility model provides a generating device of analog signals, please refer to fig. 1, fig. 1 is a schematic structural diagram of the generating device of analog signals provided by the utility model, comprising:
the power module DC, the adjustable resistor R, the first resistor R1 and the connecting part 101 are connected in series, and the circuits of the adjustable resistor R, the first resistor R1 and the connecting part 101 after being connected in series are connected in parallel at two ends of the power module DC;
the first parallel terminal 102 and the second parallel terminal 103 are respectively arranged at two ends of the first resistor R1 and are respectively connected with two ends of a load;
the connection portion 101 includes a first series terminal 111 and a second series terminal 121, and the first series terminal 111 and the second series terminal 121 are used for direct connection or connection with both ends of a load, respectively.
In consideration of the fact that the signal generator is large in size and inconvenient to carry, the power supply module DC is used for supplying power, the adjustable resistor R is used for adjusting the size of a resistor in an access circuit, the connecting portion 101 can be a lead port for leading out, the adjustable resistor R, the first resistor R1 and the connecting portion 101 are connected in series, when a load needs a current signal, two ends of the load are respectively connected with the first serial terminal 111 and the second serial terminal 121, the load is connected in series in the circuit, and the device provides the current signal for the load; when the load needs a voltage signal, the first serial terminal 111 and the second serial terminal 121 are directly connected, then the two ends of the load are respectively connected with the first parallel terminal 102 and the second parallel terminal 103, at this time, the load is connected in parallel with the two ends of the first resistor R1, the voltage value of the two ends of the load is equal to the voltage value of the two ends of the first resistor R1, and the device provides the voltage signal for the load. The specific types and numbers of the power supply module DC, the adjustable resistor R, the first resistor R1, the connection portion 101, the first parallel terminal 102, and the second parallel terminal 103 are not limited, and may be satisfied as needed. The specific connection mode can be adjusted according to the field requirement.
The utility model provides a generating device of analog signals, which is characterized in that a series circuit formed by connecting an adjustable resistor R, a first resistor R1 and a connecting part 101 in series is connected to two ends of a power module DC in parallel, wherein the power module DC can generate voltage signals, when a load is connected in series in the circuit through a first series terminal 111 and a second series terminal 121 of the connecting part 101, the device can generate current signals to be input into the load, and when the load is connected in parallel to two ends of the first resistor R1 through a first parallel terminal 102 and a second parallel terminal 103 at two ends of the first resistor R1, the device can generate voltage signals to be input into the load, wherein the adjustable resistor R realizes the change of the sizes of the current signals and the voltage signals, and the device has small volume, is convenient to carry and is more convenient and efficient.
Based on the above embodiments:
referring to fig. 2, fig. 2 is a schematic structural diagram of another analog signal generating device according to the present utility model.
As a preferred embodiment, further comprising:
the switch module 201, the switch module 201 is connected in series with the adjustable resistor R, the first resistor R1, and the connection portion 101 in series.
In this embodiment, the switch module 201 is added to the analog signal generating device, so as to control whether the analog signal generating device outputs an analog signal, and the type of the switch module 201 is not limited, and may be a switch with a mechanical structure or an electronically controlled switch.
The added switch module 201 in this embodiment meets the actual requirement better, and improves the stability and reliability of the generating device of the analog signal.
As a preferred embodiment, further comprising:
the current collection module 202, the current collection module 202 is connected with the adjustable resistor R, the first resistor R1 and the circuit after the connection part 101 is connected in series, and is used for collecting the current in the circuit.
Since it is often necessary to detect the magnitude of the analog signal when outputting the analog signal to the load, the current acquisition module 202 is added to the embodiment to acquire the magnitude of the current in the circuit, and the type of the current acquisition module 202 is not limited, and may be a multimeter or other current acquisition modules 202 provided with a processor.
The added current collection module 202 in this embodiment better meets the actual requirements, and is beneficial to the detection of the analog signal generated by the analog signal generating device by the technician, so that the stability and reliability of the analog signal generating device are improved.
As a preferred embodiment, current collection module 202 is a multimeter.
The current collection module 202 adopted in the embodiment is a multimeter, which generally comprises three main parts of a meter head, a measuring circuit, a change-over switch and the like, is the most basic tool in the field of electronic testing, and is also a widely used testing instrument. The multimeter is also called a multipurpose meter, a three-purpose meter (namely, three purposes of current, voltage and resistance), a multiplexing meter and a universal meter, and is divided into a pointer multimeter and a digital multimeter, and also a oscillometric multimeter with an oscilloscope function, and is a multifunctional and multi-range measuring instrument. The universal meter can measure direct current, direct current voltage, alternating current voltage, resistance, audio frequency level and the like, and can also measure alternating current, capacitance, inductance, temperature and some parameters of semiconductors (diodes and triodes).
Compared with an analog instrument, the universal meter adopted by the embodiment has the advantages of high sensitivity, high accuracy, clear display, strong overload capacity, portability and more convenience and simplicity in use.
As a preferred embodiment, the adjustable resistors R are N groups of adjustable resistor modules connected in parallel, each adjustable resistor module comprises a resistor and a switch connected in series, and N is a positive integer.
The adjustable resistance module that adopts in this implementation realizes the regulation to the size of resistance in the circuit, and wherein every adjustable resistance module includes series connection's resistance and switch, and when the switch was closed, the adjustable resistance module at this switch place can insert the circuit, realizes the change of resistance. The number of the resistors is not limited, and the switch may be a common mechanical switch, a controllable switch, or the like. Besides, the switch and the resistor can be connected in parallel, and the specific connection mode is not limited, so that the requirements can be met.
The adjustable resistance module used in the embodiment is easy to adjust, the simplicity of operation is provided, and the stability and the reliability of the analog signal generating device are improved.
As a preferred embodiment, the adjustable resistor R is a potentiometer.
The potentiometer adopted in the implementation realizes the adjustment of the resistance in the circuit, and is a resistance element with three leading-out ends and adjustable resistance value according to a certain change rule. Potentiometers are generally composed of a resistor body and a movable brush. When the brush moves along the resistor, a resistance value or voltage which has a certain relation with the displacement is obtained at the output end.
The potentiometer can be used as a three-terminal element or a two-terminal element. The latter can be regarded as a variable resistor, which is called a potentiometer, since its role in the circuit is to obtain an output voltage which is in a certain relation to the input voltage (applied voltage). In the embodiment, two ends of the potentiometer, which can realize resistance change, are connected into a circuit, so that the resistance in the circuit is regulated.
The potentiometer used in the embodiment can obtain a smooth and continuously-changed resistance value, so that the adjustment of the analog signal output by the analog signal generating device is smoother and the range is wider. The complex workflow of the instrument tool is abandoned, the portable tool is used for completing the work task more conveniently and efficiently, and the work efficiency is improved.
Other types of adjustable resistors are also possible.
As a preferred embodiment, the power supply module DC is a battery pack.
The power module DC in the embodiment is a battery pack, the battery packs are connected in series and in parallel, the parallel battery packs require the same voltage of each battery, the output voltage is equal to the voltage of one battery, the parallel battery packs can provide stronger current, the serial battery packs have no excessive requirements, and the serial battery packs can provide higher voltage as long as the capacity of the batteries is ensured to be almost the same.
The battery pack in this embodiment can provide a stable voltage signal, when the load is connected in series in the circuit through the first serial terminal 111 and the second serial terminal 121 of the connection portion 101, the device can generate a current signal by supplying power to the load through the battery pack, and when the load is connected in parallel with the two ends of the first resistor R1 through the first parallel terminal 102 and the second parallel terminal 103 at the two ends of the first resistor R1, the device can generate a voltage signal by supplying power to the load through the battery pack, thereby improving the stability and reliability of the analog signal generating device.
As a preferred embodiment, further comprising:
the M second resistors R2, the M second resistors R2 are connected in series in a loop formed by connecting the adjustable resistor R, the first resistor R1 and the connecting part 101 in series;
and M+1 third parallel terminals, wherein M+1 third parallel terminals are respectively arranged at two ends of each second resistor R2, and M is a positive integer.
Considering that only one first resistor R1 has a larger limitation on the load output voltage, M second resistors R2 are added in this embodiment, and m+1 third parallel terminals are respectively disposed at two ends of each second resistor R2, and the specific number of the second resistors R2 is not limited, so that the self-definition can be performed according to actual requirements. The load may be connected in parallel with any selected parallel terminal, for example, the load may be connected in parallel with the first resistor R1 and one of the second resistors R2.
In this embodiment, the range of the voltage signal output by the analog signal generating device is increased, so that the actual requirement is met, and the application scenario of the analog signal generating device is increased.
As a preferred embodiment, the second resistor R2 is one and has the same resistance as the first resistor R1.
In this embodiment, the second resistor R2 is defined as one and has the same resistance as the first resistor R1, and if the load is connected in parallel with only the first resistor R1, a first voltage signal is obtained, and if the load is connected in parallel with the first resistor R1 and the second resistor R2 in series, a second voltage signal is obtained, and at this time, the second voltage signal is twice the first voltage signal.
The embodiment provides a structure when the first voltage signal and the second voltage signal output by the analog signal generating device are in a double relationship, and increases the application scene of the analog signal generating device.
Specifically, when the load is DCS or PLC, the operation steps are as follows:
when the current signal generated by the analog signal generating device is input into the DCS and the PLC:
step 1: the circuit is composed of a battery pack, a switch, a precision potentiometer and a universal meter.
Step 2: the multimeter is placed in the current measurement position and adjusted to the milliamp range.
Step 3: the first serial terminal 111 and the second serial terminal 121 are connected to PLC terminals, respectively, to form a loop. The precision potentiometer is regulated, so that the current value measured by the universal meter is changed within the range of 4-20 mA.
When voltage signals generated by the analog signal generating device are input into the DCS and the PLC:
step 1: the first series terminal 111 and the second series terminal 121 are shorted by wires. The precise multi-turn wire-wound potentiometer and the universal meter are connected.
Step 2: the multimeter is placed in the current measurement position and adjusted to the milliamp range.
Step 3: the first parallel terminal 102 and the second parallel terminal 103 are connected to PLC terminals, respectively. The voltage signal can be output by adjusting the precision potentiometer.
When a current signal generated by the PLC is input into the generation device of the analog signal, the current signal is generated by the PLC:
step 1: the switch of the battery pack is disconnected, and a circuit is formed by the precision potentiometer and the universal meter.
Step 2: the multimeter is placed in the current measurement position and adjusted to the milliamp range.
Step 3: the PLC terminal is connected to the terminal 203 and the first series terminal 111, respectively, to form a loop. The precision potentiometer is regulated, so that the current value measured by the universal meter is changed within the range of 4-20 mA.
It should also be noted that in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative elements and steps are described above generally in terms of functionality in order to clearly illustrate the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present utility model.
Claims (9)
1. An analog signal generating apparatus, comprising:
the power supply device comprises a power supply module, an adjustable resistor, a first resistor and a connecting part, wherein the adjustable resistor, the first resistor and the connecting part are connected in series, and the circuits connected in series are connected in parallel at two ends of the power supply module;
the first parallel terminal and the second parallel terminal are respectively arranged at two ends of the first resistor and are used for being respectively connected with two ends of a load;
the connection portion includes a first series terminal and a second series terminal for direct connection or connection with both ends of the load, respectively.
2. The apparatus for generating an analog signal according to claim 1, further comprising:
the switch module is connected in series with the adjustable resistor, the first resistor and the circuit with the connecting parts connected in series.
3. The apparatus for generating an analog signal according to claim 1, further comprising:
the current collection module is connected with the adjustable resistor, the first resistor and the circuit after the connection part is connected in series and is used for collecting current in the circuit.
4. An analog signal generating device according to claim 3, wherein the current acquisition module is a multimeter.
5. The analog signal generating device according to claim 1, wherein the adjustable resistors are N groups of adjustable resistor modules connected in parallel, each of the adjustable resistor modules includes a resistor and a switch connected in series, and N is a positive integer.
6. The analog signal generating device according to claim 1, wherein the adjustable resistor is a potentiometer.
7. The analog signal generating device according to claim 1, wherein the power supply module is a battery pack.
8. The apparatus for generating an analog signal according to any one of claims 1 to 7, further comprising:
the M second resistors are connected in series with the adjustable resistor, the first resistor and the connecting part in series in a loop;
and M+1 third parallel terminals, wherein M+1 third parallel terminals are respectively arranged at two ends of each second resistor, and M is a positive integer.
9. The analog signal generating device according to claim 8, wherein said second resistor is one and equal to said first resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320779979.1U CN219348965U (en) | 2023-04-11 | 2023-04-11 | Analog signal generating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320779979.1U CN219348965U (en) | 2023-04-11 | 2023-04-11 | Analog signal generating device |
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| Publication Number | Publication Date |
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| CN219348965U true CN219348965U (en) | 2023-07-14 |
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| CN202320779979.1U Active CN219348965U (en) | 2023-04-11 | 2023-04-11 | Analog signal generating device |
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| CN (1) | CN219348965U (en) |
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