CN210111972U - Switching value signal isolator - Google Patents
Switching value signal isolator Download PDFInfo
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- CN210111972U CN210111972U CN201920944476.9U CN201920944476U CN210111972U CN 210111972 U CN210111972 U CN 210111972U CN 201920944476 U CN201920944476 U CN 201920944476U CN 210111972 U CN210111972 U CN 210111972U
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- voltage
- signal isolator
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- value signal
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Abstract
The utility model relates to a switching value signal isolator, including two-way opto-coupler, two-way stabilivolt, LED pilot lamp, transparent boat form switch buckler, shell, first resistance and second resistance etc, two-way opto-coupler contains first input interface, second input interface, first output interface and second output interface. The utility model discloses the realization is to direct current at same switching value signal isolator, alternating current, this four kinds of switching value signals of direct current voltage and alternating voltage carry out compatible collection, make it can avoid burning out subassembly such as two-way opto-coupler and two-way LED, it still realizes making this switching value signal isolator can adapt to wideer voltage input scope, because of can not adapting to direct current simultaneously with present signal isolator, alternating current, direct current voltage and alternating voltage lead to it can appear damaging the opto-coupler device and lead to influencing the problem of original circuit work under certain circumstances in order to prevent that the size that the opto-coupler device damages the restriction current signal.
Description
Technical Field
The utility model relates to a production facility informatization field especially relates to a switching value signal isolator.
Background
In production equipment, switching value signals are widely applied to detecting the working state of the equipment (for example, whether a protection door of the equipment is closed or not is detected through a microswitch) or outputting the working state information of the equipment (for example, equipment faults are reported through an indicator lamp), the production equipment is subjected to information upgrading, a signal acquisition device is inevitably required to be used for acquiring the working state of the equipment, and a signal isolator is required to be used between the production equipment and the signal acquisition device in order to prevent mutual influence between the production equipment and the signal acquisition device, particularly prevent the faults of the signal acquisition device from influencing the normal work of the production equipment.
The optical coupler is widely applied to various signal isolation application fields due to small volume, low cost and high reliability. Due to the wide variety of production equipment, the switching value signals adopted are also various, and can be roughly classified into 4 types: direct current, alternating current, direct voltage, alternating voltage, and common optical coupling circuits cannot be adapted to these applications at the same time. Especially, the rated current of the optical coupler is small, so that in order to avoid damaging an optical coupler device, a current limiting resistor is usually arranged, the current limiting resistor can protect the optical coupler and limit the magnitude of the current signal, but the working of the original circuit can be influenced under certain conditions. Therefore, it is desirable to develop a signal isolator that can isolate and collect various signals.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to provide a switching value signal isolator, its realization can carry out compatible collection to these four kinds of switching value signals of direct current, alternating current, direct current voltage and alternating voltage. The utility model discloses a realize through following technical scheme:
a switching value signal isolator comprises a bidirectional optical coupler, a bidirectional voltage-regulator tube, a first resistor, a second resistor, a first input port, a second input port, a first output port and a second output port, wherein the bidirectional optical coupler comprises a first input interface, a second input interface, a first output interface and a second output interface, the first input port is connected with the first resistor, the first resistor is respectively connected with the bidirectional voltage-regulator tube and the second resistor, the bidirectional voltage-regulator tube is connected with the second input port, the second resistor is connected with the first input interface in the bidirectional optical coupler, the second input interface in the bidirectional optical coupler is connected with the second input port, the first output interface in the bidirectional optical coupler is connected with the first output port, and the second output interface in the bidirectional optical coupler is connected with the second output port. The bidirectional optical coupler refers to an optical coupler with interface end points not divided into a positive electrode and a negative electrode, the specific structure and the working principle of the bidirectional optical coupler are common knowledge, and the detailed explanation is not provided. The bidirectional optical coupler can adopt but is not limited to an optical coupler with the model number LTV-354T-A sold by Shenzhen source electronics Limited.
Preferably, in order to enable a user to easily identify the signal state or judge whether the bidirectional optocoupler fails, the switching value signal isolator further comprises LED indicator lamps which are respectively connected in series with the second resistor and the bidirectional optocoupler, wherein the LED indicator lamps are bidirectional LED indicator lamps.
Preferably, the switching value signal isolator is wrapped in a shell, and the shell is a ship-shaped switch waterproof cover. The shell is formed by combining a cuboid frame and an upper cover with a cross section in an equilateral trapezoid shape, the size of the bottom surface of the upper cover is slightly smaller than that of the inner wall of the top surface of the cuboid frame, and the size of the bottom surface of the upper cover is 1-2mm smaller than that of the inner wall of the top surface of the cuboid frame, but not limited to the above.
Preferably, the boat-shaped switch waterproof cover is a transparent boat-shaped switch waterproof cover. The transparent boat-shaped switch waterproof cover is used as the shell of the signal isolator, so that a user can see the appearance of the signal isolator directly through the transparent boat-shaped switch waterproof cover of the shell conveniently, and the dustproof and waterproof environmental requirements in the field of production equipment can be met.
Preferably, the switching value signal isolator further comprises a switch connected in parallel with the first resistor. The switch may be, but is not limited to, a good-core model FMS6502MTC24X switch sold on bar.
Preferably, the voltage stabilizing value of the bidirectional voltage stabilizing tube is set to be less than 6 volts.
Preferably, the signal isolator can collect an alternating current voltage switching signal and a direct current voltage switching signal which are collected in a parallel connection mode, and can also collect an alternating current switching signal and a direct current switching signal in a series connection mode; when the series connection mode is adopted, the switch is arranged to be connected with the first resistor in parallel, so that the resistance between the first input port and the second input port can be reduced when the switch is closed.
The utility model has the advantages that: the method can adopt the same switching value signal isolator to be compatible with and collect four switching value signals of alternating current, direct current, alternating voltage and direct voltage, in particular to the switching value signal of the alternating current or the direct current; under the condition that the voltage at two ends of the bidirectional voltage-stabilizing tube is lower than the reverse peak voltage of the bidirectional voltage-stabilizing tube, the resistance at the two ends of the bidirectional voltage-stabilizing tube is very large, but the bidirectional voltage-stabilizing tube has no influence on the work of the bidirectional optical coupler; when the voltage input at the two ends of the bidirectional voltage-stabilizing tube is higher than the reverse breakdown voltage, the two ends of the bidirectional voltage-stabilizing tube can be changed into low impedance from impedance, so that the voltage at the two ends of the bidirectional voltage-stabilizing tube can be maintained within a preset or set voltage-stabilizing value, thereby effectively protecting components such as the bidirectional optical coupler, the bidirectional LED indicator lamp and the like, not only avoiding burning out the components such as the bidirectional optical coupler, the bidirectional LED indicator lamp and the like, but also realizing that the switching value signal isolator can adapt to a wider voltage input range, and the voltage input range is 5V-50V; and the transparent ship-shaped switch waterproof cover is used as the shell of the switching value signal isolator, so that the switch has the advantages of low cost, more goods sources and convenience in mass production and purchase.
Drawings
For the purpose of illustration, the invention is described in detail with reference to the following preferred embodiments and the accompanying drawings.
Fig. 1 is a frame structure diagram of a switching value signal isolator according to the present invention.
Fig. 2 is a schematic structural diagram of a bidirectional optocoupler in the switching value signal isolator of the present invention.
Fig. 3 is a schematic diagram of the switching value signal isolator of the present invention for collecting current signals.
Fig. 4 is a schematic diagram of collecting voltage signals by using the switching value signal isolator of the present invention.
Fig. 5 is a schematic circuit connection diagram of a switching value signal isolator according to the present invention.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
In this embodiment, as shown in fig. 1, fig. 2 and fig. 5, a switching value signal isolator includes a bidirectional optical coupler U1, a bidirectional voltage regulator tube D1, a first resistor 11, a second resistor 12, a first input port 21, a second input port 22, a first output port 31 and a second output port 32, the bidirectional optical coupler U1 includes a first input interface 51, a second input interface 52, a first output interface 61 and a second output interface 62, the first input port 21 is connected to the first resistor 11, the first resistor 11 is connected to the bidirectional voltage regulator tube D1 and the second resistor 12, the bidirectional voltage regulator tube D1 is connected to the second input port 22, the second resistor 12 is connected to the first input interface 51 of the bidirectional optical coupler U1, the second input interface 52 of the bidirectional optical coupler U1 is connected to the second input port 22, the first output interface 61 of the bidirectional optical coupler U1 is connected to the first output port 31, the second output interface 62 of the bidirectional optical coupler U1 is connected to the second output port 32.
In one embodiment, the switching value signal isolator further comprises an LED indicator lamp 4 respectively connected in series with the second resistor 12 and the bidirectional optical coupler U1, and the LED indicator lamp 4 is a bidirectional LED indicator lamp.
In one embodiment, the switching value signal isolator is wrapped in a shell, and the shell is a ship-shaped switch waterproof cover.
In one embodiment, the boat-shaped switch waterproof cover is provided as a transparent boat-shaped switch waterproof cover which can adopt, but is not limited to, a size specification of 32mmX25 mm.
In one embodiment, the switching value signal isolator further comprises a switch 7 connected in parallel with the first resistor 11.
In one embodiment, the regulated value of the bidirectional regulator D1 is set to be less than 6 volts. The bidirectional regulator D1 may be, but is not limited to, a MMBZ5V6A, bidirectional regulator D1 with a regulated voltage of 5.6 volts.
In one embodiment, the resistance of the first resistor 11 can be set to 1K ohm, the resistance of the second resistor 12 can be set to 51 ohms, the resistances of the first resistor 11 and the second resistor 12 are not limited thereto, and the first resistor 11 and the second resistor 12 can be set to other resistances according to production requirements.
The design principle of the switching value signal isolator is as follows: referring to fig. 3, when the switching value signal isolators are connected in parallel, a switch 7 is scientifically and reasonably arranged to be connected in parallel with the first resistor 11, and when the switch 7 is turned off, the resistance between the first input port 21 and the second input port 22 can be reduced, so that the ac voltage switching signal and the dc voltage switching signal acquired in parallel can be acquired. Referring to fig. 1 and 4, the switching value signal isolator is connected with the first resistor 11 and the second input port 22 through a bidirectional regulator tube D1, and the voltage stabilization value of the bidirectional regulator tube D1 is set to be less than 6 volts, so that when the switching value signal isolator is connected in series, a large current can flow through the bidirectional regulator tube D1 to avoid influencing the operation of the original circuit; under the condition that the voltage at two ends of the bidirectional voltage regulator tube D1 is lower than the reverse peak voltage of the bidirectional voltage regulator tube D1, the resistance at two ends of the bidirectional voltage regulator tube D1 is very large, but the work of the bidirectional optocoupler U1 is not influenced; when the voltage input at the two ends of the bidirectional voltage-regulator tube D1 is higher than the reverse breakdown voltage, the two ends of the bidirectional voltage-regulator tube D1 can be changed into low impedance from impedance, so that the voltage at the two ends of the bidirectional voltage-regulator tube can be maintained within a preset or set voltage-stabilizing value, and components such as a bidirectional optical coupler U1, a bidirectional LED indicator light and the like are effectively protected, the components such as the bidirectional optical coupler U1, the bidirectional LED indicator light and the like can be prevented from being burnt out, the switching value signal isolator can adapt to a wider voltage input range, and the voltage input range can be expanded to 5-50V; the whole design of the device can adopt the same switching value signal isolator to be compatible with and collect four switching value signals of alternating current, direct current, alternating voltage and direct voltage, particularly the switching value signal of the alternating current or the direct current, so that the device is more convenient to use and strong in practicability.
The utility model discloses a switching value signal isolator, including two-way opto-coupler, two-way stabilivolt, LED pilot lamp, transparent boat form switch buckler, shell, first resistance, second resistance, first input port, second input port, first output port and second output port, two-way opto-coupler contains first input interface, second input interface, first output interface and second output interface. The utility model discloses the realization is to direct current at same switching value signal isolator, alternating current, direct current voltage and this four kinds of switching value signals of alternating voltage carry out compatible collection, make it can protect subassembly such as two-way opto-coupler and two-way LED effectively, it can avoid burning out subassembly such as two-way opto-coupler and two-way LED, it still realizes making this switching value signal isolator can adapt to wideer voltage input scope, it enables the input scope of voltage to widen to 5V-50V, because of can not adapting to direct current simultaneously with having solved present signal isolator, alternating current, direct current voltage and alternating voltage lead to it can appear damaging the opto-coupler device and lead to the problem that influences original circuit work can appear under certain circumstances in order to prevent that the size that the opto-coupler device damages to limit current signal.
The above-mentioned embodiments are merely examples of the present invention, and are not intended to limit the scope of the invention, which is defined by the claims and the equivalents of the principles and basic structures of the invention.
Claims (6)
1. A switching value signal isolator is characterized by comprising a bidirectional optical coupler, a bidirectional voltage-regulator tube, a first resistor, a second resistor, a first input port, a second input port, a first output port and a second output port, wherein the bidirectional optical coupler comprises a first input interface, a second input interface, a first output interface and a second output interface, the first input port is connected with the first resistor, the first resistor is respectively connected with the bidirectional voltage-regulator tube and the second resistor, the bidirectional voltage-regulator tube is connected with the second input port, the second resistor is connected with the first input interface in the bidirectional optical coupler, the second input interface in the bidirectional optical coupler is connected with the second input port, the first output interface in the bidirectional optical coupler is connected with the first output port, and the second output interface in the bidirectional optical coupler is connected with the second output port.
2. The switching value signal isolator according to claim 1, further comprising LED indicator lamps connected in series with the second resistor and the bidirectional optocoupler, respectively, wherein the LED indicator lamps are bidirectional LED indicator lamps.
3. The switching value signal isolator according to claim 2, wherein a housing is provided to enclose the switching value signal isolator, and the housing is a ship-shaped switch waterproof cover.
4. A switching value signal isolator according to claim 3, wherein the boat-shaped switch waterproof case is provided as a transparent boat-shaped switch waterproof case.
5. The switching value signal isolator according to claim 1, further comprising: the switching value signal isolator also comprises a switch connected with the first resistor in parallel.
6. The switching value signal isolator according to claim 1, wherein: the voltage stabilizing value of the bidirectional voltage stabilizing tube is set to be less than 6 volts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920944476.9U CN210111972U (en) | 2019-06-21 | 2019-06-21 | Switching value signal isolator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920944476.9U CN210111972U (en) | 2019-06-21 | 2019-06-21 | Switching value signal isolator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210111972U true CN210111972U (en) | 2020-02-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920944476.9U Active CN210111972U (en) | 2019-06-21 | 2019-06-21 | Switching value signal isolator |
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|---|---|
| CN (1) | CN210111972U (en) |
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2019
- 2019-06-21 CN CN201920944476.9U patent/CN210111972U/en active Active
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Effective date of registration: 20230509 Address after: 523000 Southwest Industrial Zone, Shijie Town, Dongguan City, Guangdong Province Patentee after: Dongguan Gaoen Machinery Co.,Ltd. Address before: 2nd Floor, No. 4 Shentan Road, Southwest Village, Shijie Town, Dongguan City, Guangdong Province, 523000 Patentee before: DONGGUAN YUCHENG INFORMATION TECHNOLOGY Co.,Ltd. |
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