CN211318564U - System for multi-path detection of electrical parameter values by universal meter - Google Patents
System for multi-path detection of electrical parameter values by universal meter Download PDFInfo
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- CN211318564U CN211318564U CN201920518496.XU CN201920518496U CN211318564U CN 211318564 U CN211318564 U CN 211318564U CN 201920518496 U CN201920518496 U CN 201920518496U CN 211318564 U CN211318564 U CN 211318564U
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- analog switch
- channel analog
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- electrical parameter
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Abstract
The utility model discloses a system for multi-path detection of electrical parameter values by using an universal meter, which comprises a computer, the universal meter and a multi-channel analog switch, wherein the electrical parameter values comprise at least one of voltage values, current values and resistance values; the multi-channel analog switch is connected between the multimeter and the point to be tested and configured to control communication between the multimeter and the point to be tested so that the multimeter can detect the electrical parameter value of the point to be tested; and the computer is respectively connected with the universal meter and the multi-channel analog switch and is configured to send a control instruction to the multi-channel analog switch, acquire the electrical parameter value detected by the universal meter and record and process the electrical parameter value. According to the technical scheme of the utility model, can realize only realizing the detection to the electrical parameter value of a plurality of check points with an universal meter, greatly reduced hardware test cost has optimized test condition.
Description
Technical Field
The utility model relates to a hardware detects the field, more specifically relates to a technique of universal meter multichannel detection electrical parameter value.
Background
In the field of hardware testing, voltage, current and the like of a common circuit are tested, the number of hardware detection tools developed or produced generally is limited, and generally one instrument can only detect one voltage/current detection point. If a plurality of detection points exist, all the detection points are difficult to detect quickly and effectively under the condition that the instrument is limited, and the test process is very inconvenient.
SUMMERY OF THE UTILITY MODEL
To above problem, the utility model aims to overcome the defect that an instrument can only detect a voltage/electric current check point among the prior art, provide a system of universal meter multichannel detection electrical parameter value.
According to the technical scheme of the utility model, a system for multimeter multichannel detection electrical parameter value is provided, including, computer, universal meter, multichannel analog switch, electrical parameter value includes at least one in voltage value, current value, resistance value; the multi-channel analog switch is connected between the multimeter and the point to be tested and configured to control communication between the multimeter and the point to be tested so that the multimeter can detect the electrical parameter value of the point to be tested; and the computer is respectively connected with the universal meter and the multi-channel analog switch and is configured to send a control instruction to the multi-channel analog switch, acquire the electrical parameter value detected by the universal meter and record and process the electrical parameter value.
Optionally, the point to be measured comprises a plurality of points; the multi-channel analog switch is connected with each point to be tested respectively and is configured to control the universal meter to be communicated with the plurality of points to be tested respectively.
Optionally, the multi-channel analog switch further includes a switch control device, connected between the computer and the multi-channel analog switch, and configured to receive the control instruction from the computer and control the switch switching of the multi-channel analog switch between the different test points.
Optionally, the input end and the output end of the multimeter are respectively connected with the multi-channel analog switch.
Optionally, the device further comprises a connecting device, wherein the connecting device is connected between the multichannel analog switch and the point to be measured, and is configured to include an input connecting end and an output connecting end; the multi-channel analog switch is also configured to communicate the input end of the multimeter with the input connection end of the connection device; and the output end of the universal meter is communicated with the output connecting end of the connecting device.
Optionally, for example, the point to be measured includes two connection interfaces, and the input connection end is connected to one connection interface of the point to be measured; the output connecting end is connected with the other connecting interface of the point to be measured.
Optionally, for example, the multi-channel analog switch includes two, respectively a first multi-channel analog switch and a second multi-channel analog switch, the first multi-channel analog switch connects the input terminal of the multimeter and the input connection terminal of the connection device; the second multi-channel analog switch is connected with the output end of the multimeter and the output connecting end of the connecting device.
Optionally, for example, the input connection terminal includes a plurality; the output connecting ends comprise a plurality of; the number of the input connecting ends is the same as that of the output connecting ends.
Optionally, the computer is further configured to send the control instruction in a timed loop.
Optionally, the control instruction includes at least one of a switching instruction and a switching instruction.
The utility model has the advantages that:
1) according to the technical scheme of the utility model, the detection of the electrical parameter values of a plurality of detection points can be realized by only one universal meter, and data recording and processing can be realized;
2) according to the technical scheme of the utility model, hardware test cost can be greatly reduced, test conditions are optimized, hardware test data are saved, and powerful test guarantee is provided for hardware test;
3) according to the technical scheme of the utility model, can realize real-time, regularly detect the electrical parameter value such as voltage value, current value, resistance value of waiting to measure the point.
Drawings
FIG. 1 shows a schematic diagram of a system for multi-path detection of electrical parameter values by a multimeter according to the present invention.
Fig. 2 shows a schematic view of an embodiment of a system according to the invention comprising a plurality of points to be measured.
Fig. 3 shows a schematic diagram of an embodiment of a system comprising a diverter switch control device according to the present invention.
Fig. 4 shows a schematic view of an embodiment of a system comprising a connecting device according to the invention.
Fig. 5 shows a schematic diagram of an embodiment of a system according to the present invention comprising two multi-channel analog switches.
Detailed Description
The preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals refer to like elements and techniques of the present invention so that advantages and features of the present invention may be more readily understood when implemented in a suitable environment. The following description is an embodiment of the present invention, and other embodiments related to the claims that are not explicitly described also fall within the scope of the claims.
FIG. 1 shows a schematic diagram of a system for multi-path detection of electrical parameter values by a multimeter according to the present invention.
As shown in FIG. 1, a system for multi-path testing of electrical parameter values by a multimeter is provided and can include a computer 110, a multimeter 120, and a multi-channel analog switch 130, wherein the electrical parameter values include at least one of voltage values, current values, and resistance values; the multi-channel analog switch 130 is connected between the multimeter 120 and the point to be tested, and is configured to control communication between the multimeter 120 and the point to be tested, so that the multimeter 120 detects the electrical parameter value of the point to be tested; the computer 110 is connected to the multimeter 120 and the multi-channel analog switch 130, and is configured to send a control instruction to the multi-channel analog switch 130, and to obtain, record, and process the electrical parameter value detected by the multimeter 120.
The multimeter 120 is an electrical measuring instrument that can measure electrical parameter values such as voltage, current, resistance, etc. Such as the agilent series of multimeters, etc. The voltage may include a direct current voltage and an alternating current voltage, and the current may include a direct current and an alternating current. For example, the multimeter 120 can measure a current value, a voltage value, etc. of a circuit under test, and can also measure, for example, a resistance value of a diode, etc. The point to be measured may include, but is not limited to, a position to be measured of a circuit, a diode, and the like.
The multi-channel analog switch 130 may be an analog switch device for controlling whether to communicate between the multimeter 120 and the point to be tested, and may be a switch including a plurality of control channels, and the communication between each point to be tested and the multimeter 120 may be controlled through at least one channel in the multi-channel analog switch 130. The multimeter 120 and the multi-channel analog switch 130 can be directly or indirectly connected, can be connected in a wired or wireless manner, and can also be connected in an interface, serial port or other manner. The multi-channel analog switch 130 and the point to be measured may be directly or indirectly connected, may be connected in a wired or wireless manner, and may be connected through an interface, a serial port, or the like. The multi-channel analog switch 130 may be an integrated switch, and may be implemented by a chip, such as a chip of type HEF 4051.
The computer 110 and the multimeter 120 or the computer 110 and the multi-channel analog switch 130 may be connected directly or indirectly, may be connected in a wired or wireless manner, may be connected physically or logically, and may be connected through an interface, a serial port, or the like. For example, via a usb interface, a uart, etc. The computer 110 may send a control command to the multi-channel analog switch 130, so that the multi-channel analog switch 130 is opened or closed according to the command content. The computer 110 can also obtain the detected electrical parameter values from the multimeter 120 in real time or at regular time, and perform recording, displaying, processing, etc. The processing may include, but is not limited to, plotting the change in the electrical parameter value. The display can be performed through the display screen of the computer 110, or can be performed through an external display, so as to realize human-computer interaction. The computer 110 is an electronic computing machine that can be used for high-speed computing, and may be implemented as a processor, controller, calculator, chip, or the like, or a collection thereof.
According to an embodiment of the present invention, for example, the control command may include at least one of a switching command, and the like. For example, the computer 110 may send a command to switch channels to the multi-channel analog switch 130, or may also send a command to switch whether the switch is on or off, or simultaneously send a command to switch to a channel, and to open the channel and close other channels.
According to an embodiment of the present invention, the computer 110 may be further configured to send the control command in a timed loop. The timing may refer to sending the control command once at a fixed time interval, and the timing control may be implemented by a timer or a chip, etc. The loop may refer to an instruction for controlling switching or/and opening/closing of each channel of the multi-channel analog switch 130, and may be performed in a loop. For example, the multi-channel analog switch 130 has 8 channels, which are respectively numbered 1, 2, 3, 4, 5, 6, 7, and 8 for convenience of description, and the cycle may refer to a cycle in which control commands for turning on a 1-channel switch, turning on a 2-channel switch, turning on a 3-channel switch, turning on a 4-channel switch, turning on a 5-channel switch, turning on a 6-channel switch, turning on a 7-channel switch, and turning on an 8-channel switch are sequentially issued, and then control commands for turning on the 1-channel switch to turning on the 8-channel switch are repeatedly issued. The order of 1-8 may not be followed, and the circulation may be performed in the order of 1, 3, 5, 7, 2, 4, 6, 8, or the circulation may be performed in the order of 1, 2, 3, 4, or the like.
Fig. 2 shows a schematic view of an embodiment of a system according to the invention comprising a plurality of points to be measured.
As shown in fig. 2, the point to be measured may include a plurality of points; the multi-channel analog switch 130 is connected to each of the points to be tested, and is configured to control the multimeter 120 to communicate with the points to be tested.
The multi-channel analog switch 130 may include a plurality of control channels, and the plurality of control channels may be respectively connected to a plurality of the points to be tested, for example, each control channel may be connected to one of the points to be tested. The multi-channel analog switch 130 can realize the respective communication between the multimeter 120 and the multiple points to be measured by controlling the opening and closing of each channel, so that the multiple points to be measured can be measured sequentially or at intervals or simultaneously by using only one multimeter without manual operation and time and labor consumption.
Fig. 3 shows a schematic diagram of an embodiment of a system comprising a diverter switch control device according to the present invention.
As shown in fig. 3, a switch control device 310 may be further included, where the switch control device 310 is connected between the computer 110 and the multi-channel analog switch 130, and configured to receive the control command from the computer 110 and control the switch switching of the multi-channel analog switch 130 between the different test points.
The switch control device 310 may control the on and off of each channel in the multi-channel analog switch 130 according to the control instruction, so as to perform a function of switching channels. The connection between the change-over switch control device 310 and the computer 110 or the multi-channel analog switch 130 may be through direct or indirect connection, through wired or wireless connection, through physical or logical connection, or through an interface, a serial port, or the like. For example, via a usb interface, a uart, etc. The switch control device 310 may employ a Z32HuB type chip or the like.
Fig. 4 shows a schematic view of an embodiment of a system comprising a connecting device according to the invention.
As shown IN FIG. 4, input IN of multimeter 1200And an output terminal OUT0May be respectively connected to the multi-channel analog switches 130.
The multimeter 120 can include an input IN0And an output terminal OUT0And the device can be connected with a circuit to be tested or a component and the like through an external meter pen. For example, a red stylus is connected as input IN0The black meter pen is connected as an output end OUT0. The input terminal IN0And an output terminal OUT0Can refer to the direction of current flow through multimeter 120, e.g., the direction of current flow into multimeter 120 is at input IN of multimeter 1200The direction of current flowing OUT of multimeter 120 is the output terminal OUT of multimeter 1200. The external meter pen and the circuit to be tested are connected, the red meter pen is connected with the anode of the circuit to be tested, and the black meter pen is connected with the cathode of the circuit to be tested.
When the multi-channel analog switch 130 is connected to the multimeter 120, there can be a plurality of connection modes, for example, the multimeter 120 connects the input terminal IN with two test pens0And the output terminal OUT0Respectively connected with the multi-channel analog switches 130.
According to an embodiment of the present invention, the point to be measured may include two connection interfaces. For example, the positive and negative electrodes of the circuit to be measured, the positive and negative electrodes of the diode to be measured, and the two ends of the device to be measured, such as the resistor to be measured. The two connection interfaces of each point to be measured may be connected to one channel of the multi-channel analog switch 130, or may be connected to two channels of the multi-channel analog switch 130 respectively. If the two connection interfaces of each point to be tested are respectively connected with the two channels of the multi-channel analog switch 130, the multi-channel analog switch 130 can control the input terminal IN of the multimeter 1200And an output terminal OUT0The multi-channel analog switch 130 is respectively communicated with the two connecting interfaces of each point to be measured, and the number of channels in the multi-channel analog switch 130 is at least twice of the number of the points to be measured.
According to an embodiment of the present invention, the multi-channel analog switch may further include a connecting device 410, wherein the connecting device 410 is connected between the multi-channel analog switch 130 and the point to be measured, and is configured to include an input connection terminal IN and an output connection terminal OUT; the multi-channel analog switch 130 is further configured to communicate with the input IN of the multimeter 1200And the input connection IN of the connection device 410; the output end OUT communicated with the multimeter 1200And the output connection OUT of the connection device 410.
The connection device 410 may be connected with the multi-channel analog switch 130 or the point to be measured directly or indirectly, may be connected in a wired or wireless manner, may be connected physically or logically, and may be connected through an interface, a serial port, or the like. For example, via a usb interface, a uart, etc. The input connection terminal IN and the output connection terminal OUT may be implemented by pins, etc. Input connection terminal IN and input IN of multimeter0Can be conducted through the multi-channel analog switch 130, and the output connection end OUT is connected with the output end OUT of the multimeter0Conduction may be performed through the multi-channel analog switch 130. When there are a plurality of points to be measured, the plurality of points to be measured may be connected to the connecting device 410, respectively.
The input connection terminal IN may include a plurality; the output connection terminal OUT may include a plurality; the number of input connections IN and output connections OUT may be the same. One of the input terminals IN and one of the output terminals OUT may be formed as a groupAnd a connecting end. Input IN of the multimeter0The input connection ends IN can be conducted IN a one-to-many mode, and the output end OUT of the multimeter0The output terminals OUT may be connected in a one-to-many manner.
According to an embodiment of the present invention, the point to be measured includes two connection interfaces, and the input connection end IN is connected to one connection interface of the point to be measured; and the output connecting end OUT is connected with the other connecting interface of the point to be measured. When the number of the points to be measured is multiple, the input connection end IN of each group of connection ends is connected with one connection interface of one point to be measured, and the output connection end OUT of the group of connection ends is connected with another connection interface of the point to be measured, for example, as shown IN the connection embodiment shown IN fig. 4, so as to realize the connection between the multiple groups of connection ends and the multiple points to be measured.
Fig. 5 shows a schematic diagram of an embodiment of a system according to the present invention comprising two multi-channel analog switches.
As shown IN FIG. 5, the multi-channel analog switch 130 can include two, a first multi-channel analog switch 131 and a second multi-channel analog switch 132, respectively, the first multi-channel analog switch 131 can be connected to the input IN of the multimeter 1200And the input connection IN of the connection device 410; the second multi-channel analog switch 132 can be connected to the output terminal OUT of the multimeter 1200And the output connection OUT of the connection device 410.
When the number of the input connection terminals IN is plural, the first multi-channel analog switch 131 is connected to the plural input connection terminals IN, respectively; when the output connection terminals OUT are plural, the second multi-channel analog switch 132 is connected to the plural output connection terminals OUT, respectively.
When there are a plurality of the points to be measured, they may be connected to the connecting device 410, respectively. Two ends of each point to be tested can be respectively connected with the input connecting end IN and the output connecting end OUT of each group of connecting ends, and according to the embodiment, the input of one universal meter 120 can be realizedInput terminal IN0And an output terminal OUT0Can be respectively connected with two ends of a plurality of points to be measured.
As shown in fig. 5, in this embodiment, the switch control device 310 may be further included, and is respectively connected to the computer 110, the first multi-channel analog switch 131, and the second multi-channel analog switch 132, so as to respectively control the first multi-channel analog switch 131 and the second multi-channel analog switch 132. According to the present embodiment, the switch control device 310 can control the on and off of each channel of the first multi-channel analog switch 131 and the second multi-channel analog switch 132 at the same time, so as to achieve fast turn-on and fast measurement of the same point to be measured. If the switching speed is fast enough, almost simultaneous detection of all the points to be measured can be achieved.
The utility model has the advantages that:
1) according to the technical scheme of the utility model, the detection of the electrical parameter values of a plurality of detection points can be realized by only using one universal meter, and the data recording and processing can be realized, thereby really realizing one meter for multiple purposes;
2) according to the technical scheme of the utility model, hardware test cost can be greatly reduced, test conditions are optimized, hardware test data are saved, and powerful test guarantee is provided for hardware test;
3) according to the technical scheme of the utility model, can realize real-time, regularly detect electrical parameter values such as the magnitude of voltage, the current value, the resistance value of waiting to measure the point, and detect fastly, detection efficiency is high.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim.
Claims (10)
1. A multi-channel electrical parameter value detecting system of a universal meter is characterized by comprising a computer, the universal meter and a multi-channel analog switch,
the electrical parameter value comprises at least one of a voltage value, a current value and a resistance value;
the multi-channel analog switch is connected between the multimeter and the point to be tested and is configured to,
controlling the communication between the multimeter and the point to be tested so that the multimeter can detect the electrical parameter value of the point to be tested;
the computer is respectively connected with the multimeter and the multi-channel analog switch and is configured to,
and sending a control instruction to the multi-channel analog switch, acquiring the electrical parameter value detected by the universal meter, and recording and processing the electrical parameter value.
2. The system of claim 1,
the point to be measured comprises a plurality of points;
the multi-channel analog switch is respectively connected with each point to be tested and is configured,
and controlling the universal meters to be respectively communicated with the plurality of points to be tested.
3. The system according to claim 1 or 2, further comprising a changeover switch control device,
the switcher control device connected between the computer and the multi-channel analog switch and configured to,
receiving the control instruction of the computer,
and controlling the switch switching of the multi-channel analog switch among different points to be tested.
4. The system of claim 3,
and the input end and the output end of the universal meter are respectively connected with the multi-channel analog switch.
5. The system of claim 4, further comprising a connection device,
the connecting device is connected between the multi-channel analog switch and the point to be measured, and is configured to comprise an input connecting end and an output connecting end;
the multi-channel analog switch is further configured such that,
communicating the input end of the multimeter with the input connecting end of the connecting device;
and the output end of the universal meter is communicated with the output connecting end of the connecting device.
6. The system of claim 5, wherein,
the point to be measured comprises two connection interfaces,
the input connecting end is connected with one connecting interface of the point to be measured;
the output connecting end is connected with the other connecting interface of the point to be measured.
7. The system of claim 5, wherein,
the multi-channel analog switch comprises two multi-channel analog switches, namely a first multi-channel analog switch and a second multi-channel analog switch,
the first multi-channel analog switch is connected with the input end of the multimeter and the input connecting end of the connecting device;
the second multi-channel analog switch is connected with the output end of the multimeter and the output connecting end of the connecting device.
8. The system of claim 5, wherein,
the input connecting end comprises a plurality of input connecting ends;
the output connecting ends comprise a plurality of;
the number of the input connecting ends is the same as that of the output connecting ends.
9. The system of claim 1, wherein the computer is further configured to,
and sending the control instruction in a timing cycle.
10. The system of claim 1, wherein,
the control command comprises at least one of a switching command and a switching command.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920518496.XU CN211318564U (en) | 2019-04-16 | 2019-04-16 | System for multi-path detection of electrical parameter values by universal meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201920518496.XU CN211318564U (en) | 2019-04-16 | 2019-04-16 | System for multi-path detection of electrical parameter values by universal meter |
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| CN211318564U true CN211318564U (en) | 2020-08-21 |
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| CN201920518496.XU Expired - Fee Related CN211318564U (en) | 2019-04-16 | 2019-04-16 | System for multi-path detection of electrical parameter values by universal meter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112180173A (en) * | 2020-09-28 | 2021-01-05 | 杭州领挚科技有限公司 | Measuring device |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112180173A (en) * | 2020-09-28 | 2021-01-05 | 杭州领挚科技有限公司 | Measuring device |
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