CN217901835U - Signal interface module device for intelligently identifying transmitter types - Google Patents
Signal interface module device for intelligently identifying transmitter types Download PDFInfo
- Publication number
- CN217901835U CN217901835U CN202221764159.7U CN202221764159U CN217901835U CN 217901835 U CN217901835 U CN 217901835U CN 202221764159 U CN202221764159 U CN 202221764159U CN 217901835 U CN217901835 U CN 217901835U
- Authority
- CN
- China
- Prior art keywords
- signal
- circuit
- output
- current
- interface module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The utility model relates to a signal interface module device for intelligently identifying transmitter types, wherein a rear-end signal acquisition device of a 4-20mA direct current interface or a rear-end signal acquisition device of a two-wire system interface is connected with the input end of a transmitter; a signal identification circuit (21) in the transmitter consists of two signal channels, a feedback part is controlled by a single chip microcomputer and is switched periodically at fixed time, and the two signal channels are divided into a two-wire system channel and a 4-20mA direct current channel; after the signal identified by the signal identification circuit (21) is processed by the filtering amplification circuit, the signal is collected by the singlechip, and a signal is fed back to lock the channel at the current channel for adaptation; after the adaptation is completed, the single chip microcomputer carries out amplitude detection on the signal, after digital processing, the signal is isolated by an optical coupler, and after a rear-end modulation and demodulation circuit, a corresponding signal is output. The utility model discloses support two kinds of signal interfaces of two-wire system and 4-20mA, it is which kind of signal interface that needn't distinguish when the access signal, can not cause equipment to damage because of the wiring mistake.
Description
Technical Field
The utility model relates to an intelligent recognition changer type technique especially relates to a signal interface module device of intelligent recognition changer type.
Background
Two-wire system or 4-20mA (direct current) transmitter both exist the same place, all adopt two cables to connect with back end signal acquisition equipment and have 4-20mA current signal in the loop of connection. Part of field technicians think that the transmitter adopting the two-cable connection mode is a two-wire transmitter; the 4-20mA current signal on the signal loop is 4-20mA (direct current).
When selecting the rear-end acquisition equipment, the rear-end signal acquisition equipment with a 4-20mA (direct current) interface is often selected by the two-wire system transmitter, or the rear-end signal acquisition equipment with the two-wire system interface is selected by the 4-20mA (direct current) transmitter, so that signal acquisition fails, and the front-end sensor equipment is damaged, thereby bringing unnecessary loss to both production and use.
As shown in fig. 1, when the input is a dc signal, the terminal 1-2 is connected; and 3-4 is connected with a terminal when the two-wire transmitter is used for signal.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a signal interface module device of intelligent recognition changer type, the technical problem of its solution is that current two-wire system or 4-20mA (direct current) changer can not intelligent recognition signal kind to lead to signal acquisition failure, set up and damage front end sensor equipment.
In order to solve the technical problem existing in the prior art, the utility model adopts the following scheme:
the utility model provides a signal interface module device of intelligent recognition changer type which characterized in that: the rear end signal acquisition equipment of the 4-20mA direct current interface or the rear end signal acquisition equipment of the two-wire system interface is connected with the input end of the transmitter; a signal identification circuit (21) in the transmitter consists of two signal channels, a feedback part is controlled by a single chip microcomputer and is switched periodically at fixed time, and the two signal channels are divided into a two-wire system channel and a 4-20mA direct current channel; the output end of the signal identification circuit (21) is connected with the input end of the filtering amplification circuit, the output end of the filtering amplification circuit is connected with the single chip microcomputer, after the signal identified by the signal identification circuit (21) is processed by the filtering amplification circuit, the single chip microcomputer acquires the signal and feeds back a signal to lock the channel on the current channel for adaptation; after the adaptation is completed, the single chip microcomputer carries out amplitude detection on the signal, after digital processing, the signal is isolated by an optical coupler, and after a rear-end modulation and demodulation circuit, a corresponding signal is output.
Preferably, when the single chip microcomputer detects the amplitude of the signal, when the amplitude of the signal is higher than or lower than a certain set limit value, an alarm signal is output.
Preferably, the signal identification circuit (21) determines the signal type through the enabling switching of a CPU control circuit (23) control circuit in the singlechip; the current acquisition and conversion circuit (22) digitizes the analog quantity current and then transmits the digitized analog quantity current to the CPU control circuit (23); the CPU control circuit (23) is responsible for judging signals in the signal identification circuit (21), processing the digitized signals of the current acquisition and conversion circuit (22), and controlling the output signals of the PWM output circuit (24; the PWM output circuit (24, 25) transmits the signal processed by the CPU control circuit (23) to the front stage of the isolation optocoupler.
Preferably, the CPU control circuit (23) converts the PWM waveform output by the first PWM output circuit (24) into a DC voltage through the first output shaping circuit (31) after optical coupling isolation transmission.
Preferably, the first voltage-current conversion circuit (32) converts the direct-current voltage of the first output shaping circuit (31) into a direct-current output.
Preferably, the CPU control circuit (23) converts the PWM waveform output by the second PWM output circuit (25) into direct current voltage through the second output shaping circuit (41) after optical coupling isolation transmission.
Preferably, the second voltage-to-current conversion circuit (42) converts the direct-current voltage of the second output shaping circuit (41) into a direct-current output.
Preferably, the external 20-35VDC power supply is stabilized by a voltage conversion circuit (11), and a transformer driving circuit (12) transmits the direct-current voltage after voltage conversion to an alternating-current voltage rectifying and filtering circuit by a transformer (13) in an alternating-current mode.
Preferably, the alternating voltage rectifying and filtering circuit comprises a first output channel alternating voltage rectifying and filtering circuit (14), a second output channel alternating voltage rectifying and filtering circuit (16) and an input channel alternating voltage rectifying and filtering circuit (15), the first output channel alternating voltage rectifying and filtering circuit (14) supplies the processed signals to the first output shaping circuit (31), the first output channel alternating voltage rectifying and filtering circuit (16) supplies the processed signals to the second output shaping circuit (41), and the input channel alternating voltage rectifying and filtering circuit (15) supplies the processed signals to the signal identification circuit (21).
This signal interface module device of intelligent recognition changer type has following beneficial effect:
(1) The utility model discloses support two-wire system and two kinds of signal interface of 4-20mA (direct current), it is which kind of signal interface that need not distinguish when the access signal, can not cause equipment to damage because of the wiring mistake.
(2) The utility model discloses owing to adopt embedded technique, the interface signal type is by inside singlechip automatic identification and adaptation to on the signal interface the same with the changer.
(3) The utility model discloses can also the amplitude of real-time supervision input signal, report to the police to the error signal of input (like broken string, overflow), report to the police and adopt the mode of pilot lamp and output 22mA electric current.
(4) The utility model discloses the scheme supports two tunnel outputs.
Drawings
FIG. 1: a schematic diagram of a transmitter signal interface in the prior art;
FIG. 2: the utility model discloses the signal interface schematic diagram of the signal interface module device for intelligently identifying the transmitter type;
FIG. 3: the utility model discloses the circuit connection schematic diagram of the signal interface module device of intelligent recognition changer type.
Description of reference numerals:
11-a voltage conversion circuit; 12-transformer drive circuit; 13-a transformer; 14-a first output channel alternating voltage rectifying and filtering circuit; 15-input channel alternating voltage rectification filter circuit; 16-a second output channel alternating voltage rectifying and filtering circuit;
21-a signal recognition circuit; 22-current acquisition and conversion circuit; 23-a CPU control circuit; 24-a first PWM output circuit; 25-a second PWM output circuit;
31-a first output shaping circuit; 32-a first voltage-to-current conversion circuit;
41-second output shaping circuit; 42-second voltage to current conversion circuit.
Detailed Description
The present invention will be further explained with reference to fig. 2 to 3:
as shown in fig. 2, either the input dc signal or the two-wire transmitter signal is connected to terminals 3 and 4. Then, the signal acquisition is completed through the internal identification circuit and the switching circuit.
The utility model discloses a signal interface module device for intelligently identifying transmitter types, a rear end signal acquisition device of a 4-20mA direct current interface or a rear end signal acquisition device of a two-wire system interface is connected with the input end of a transmitter; a signal identification circuit 21 in the transmitter consists of two signal channels, a feedback part is controlled by a single chip microcomputer and is switched periodically, and the two signal channels are divided into a two-wire system channel and a 4-20mA direct current channel; after the signal identified by the signal identification circuit 21 is processed by the filtering amplification circuit, the single chip acquires the signal, feeds back a signal to lock the channel in the current channel, and performs adaptation; after the adaptation is completed, the single chip microcomputer carries out amplitude detection on the signal, after digital processing, the signal is isolated by an optical coupler, and after a rear-end modulation and demodulation circuit, a corresponding signal is output.
When the single chip microcomputer detects the amplitude of the signal, when the amplitude of the signal is higher than or lower than a certain set limit value, an alarm signal is output.
As shown in fig. 2, the signal identification circuit 21 determines the signal type by controlling the enabling switching of the circuit through a CPU control circuit 23 in the single chip microcomputer; the current acquisition and conversion circuit 22 digitizes the analog quantity current and transmits the digitized analog quantity current to the CPU control circuit 23; the CPU control circuit 23 is responsible for judging the signal in the signal identification circuit 21, processing the digitized signal of the current acquisition and conversion circuit 22 and the PWM output circuit 24;25 control of the output signal; a PWM output circuit 24; and 25, transmitting the signal processed by the CPU control circuit 23 to the front stage of the isolation optocoupler.
The CPU control circuit 23 converts the PWM waveform output from the first PWM output circuit 24 into a dc voltage through the first output shaping circuit 31 after the transmission of the optical coupling isolation. The first voltage-to-current conversion circuit 32 converts the dc voltage of the first output shaping circuit 31 into a dc current output.
The CPU control circuit 23 converts the PWM waveform output from the second PWM output circuit 25 into a dc voltage through the second output shaping circuit 41 after the transmission of the optical coupling isolation. The second voltage-current conversion circuit 42 converts the dc voltage of the second output shaping circuit 41 into a dc current output.
The external 20-35VDC power supply is stabilized by a voltage conversion circuit 11, and a transformer driving circuit 12 transfers the dc voltage converted by the voltage to an ac voltage rectifying and smoothing circuit through a transformer 13 in an ac manner.
The alternating voltage rectifying and filtering circuit comprises a first output channel alternating voltage rectifying and filtering circuit 14, a second output channel alternating voltage rectifying and filtering circuit 16 and an input channel alternating voltage rectifying and filtering circuit 15, the first output channel alternating voltage rectifying and filtering circuit 14 supplies processed signals to a first output shaping circuit 31, the first output channel alternating voltage rectifying and filtering circuit 16 supplies processed signals to a second output shaping circuit 41, and the input channel alternating voltage rectifying and filtering circuit 15 supplies the processed signals to a signal identification circuit 21.
The present invention has been described in detail with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above embodiments, and various improvements of the method concept and the technical solution of the present invention can be made without modification, or the present invention can be directly applied to other occasions without modification, and is within the protection scope of the present invention.
Claims (9)
1. The utility model provides a signal interface module device of intelligent recognition changer type which characterized in that:
the rear end signal acquisition equipment of the 4-20mA direct current interface or the rear end signal acquisition equipment of the two-wire system interface is connected with the input end of the transmitter; a signal identification circuit (21) in the transmitter consists of two signal channels, a feedback part is controlled by a single chip microcomputer and is switched periodically at fixed time, and the two signal channels are divided into a two-wire system channel and a 4-20mA direct current channel;
the output end of the signal identification circuit (21) is connected with the input end of the filtering amplification circuit, the output end of the filtering amplification circuit is connected with the single chip microcomputer, after the signal identified by the signal identification circuit (21) is processed by the filtering amplification circuit, the single chip microcomputer acquires the signal, and feeds back a signal to lock the channel on the current channel for adaptation; after the adaptation is completed, the single chip microcomputer carries out amplitude detection on the signal, after digital processing, the signal is isolated by an optical coupler, and after a rear-end modulation and demodulation circuit, a corresponding signal is output.
2. The signal interface module apparatus for intelligently identifying transmitter types of claim 1, wherein: when the single chip microcomputer detects the amplitude of the signal, when the amplitude of the signal is higher than or lower than a certain set limit value, an alarm signal is output.
3. The signal interface module apparatus for intelligently identifying a transmitter type according to claim 1 or 2, wherein: the signal identification circuit (21) determines the signal type through enabling switching of a control circuit of a CPU (23) in the singlechip; the current acquisition and conversion circuit (22) digitizes the analog quantity current and transmits the digitized analog quantity current to the CPU control circuit (23); the CPU control circuit (23) is responsible for judging signals in the signal identification circuit (21), processing the digitized signals of the current acquisition and conversion circuit (22), and controlling the output signals of the PWM output circuit (24; the PWM output circuit (24, 25) transmits the signal processed by the CPU control circuit (23) to the front stage of the isolation optocoupler.
4. The signal interface module apparatus for intelligently identifying transmitter types of claim 3, wherein: the CPU control circuit (23) converts the PWM waveform output by the first PWM output circuit (24) into direct current voltage through the first output shaping circuit (31) after the transmission of optical coupling isolation.
5. The signal interface module apparatus for intelligently identifying transmitter types of claim 4, wherein: a first voltage-current conversion circuit (32) converts the DC voltage of the first output shaping circuit (31) into a DC current and outputs the DC current.
6. The signal interface module apparatus for intelligently identifying transmitter types of claim 3, wherein: the CPU control circuit (23) converts the PWM waveform output by the second PWM output circuit (25) into direct current voltage through the second output shaping circuit (41) after optical coupling isolation transmission.
7. The signal interface module apparatus for intelligently identifying transmitter types of claim 6, wherein: a second voltage/current conversion circuit (42) converts the DC voltage of the second output shaping circuit (41) into a DC current and outputs the DC current.
8. The signal interface module apparatus for intelligently identifying a transmitter type according to claim 5 or 7, wherein: an external 20-35VDC power supply is stabilized through a voltage conversion circuit (11), and a transformer driving circuit (12) transmits the direct-current voltage after voltage conversion to an alternating-current voltage rectifying and filtering circuit through a transformer (13) in an alternating-current mode.
9. The signal interface module apparatus for intelligently identifying transmitter types of claim 8, wherein: the alternating voltage rectification filter circuit comprises a first output channel alternating voltage rectification filter circuit (14), a second output channel alternating voltage rectification filter circuit (16) and an input channel alternating voltage rectification filter circuit (15), the first output channel alternating voltage rectification filter circuit (14) supplies processed signals to a first output shaping circuit (31), the second output channel alternating voltage rectification filter circuit (16) supplies processed signals to a second output shaping circuit (41), and the input channel alternating voltage rectification filter circuit (15) supplies processed signals to a signal identification circuit (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221764159.7U CN217901835U (en) | 2022-07-09 | 2022-07-09 | Signal interface module device for intelligently identifying transmitter types |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221764159.7U CN217901835U (en) | 2022-07-09 | 2022-07-09 | Signal interface module device for intelligently identifying transmitter types |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217901835U true CN217901835U (en) | 2022-11-25 |
Family
ID=84135019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221764159.7U Active CN217901835U (en) | 2022-07-09 | 2022-07-09 | Signal interface module device for intelligently identifying transmitter types |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217901835U (en) |
-
2022
- 2022-07-09 CN CN202221764159.7U patent/CN217901835U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102624427B (en) | Synchronous transmission system of energy and information | |
| CN111596631A (en) | Tunnel intelligent illumination control system and method and controller | |
| CN217901835U (en) | Signal interface module device for intelligently identifying transmitter types | |
| CN107666141B (en) | AC/DC series line fault detection and protection device for DC power distribution system | |
| CN115878526B (en) | IO module multi-adapter control method and multi-channel IO module | |
| KR100657873B1 (en) | Remote control and monitoring system for distributed generation using power line communication | |
| CN115184645A (en) | Signal interface module device for intelligently identifying transmitter type | |
| CN216930034U (en) | Communication optimization equipment and communication system based on two buses | |
| CN101860017B (en) | Control device for high-voltage and high-power power electronic converter system | |
| US11277894B2 (en) | Universal adapter for lighting system for indoor grow application | |
| CN210867675U (en) | Two-wire non-polarity half-duplex communication and power supply circuit | |
| CN210405304U (en) | High-voltage power line carrier coupling system | |
| CN216751744U (en) | Half-duplex communication circuit and pond oxygen-increasing machine | |
| CN213276340U (en) | Multichannel anti-interference switching value input module | |
| CN101931266A (en) | Switching circuit for emergency power supply | |
| CN221101278U (en) | Carrier communication interface circuit and intelligent home system | |
| CN216016521U (en) | Uninterrupted power supply circuit and visible doorbell | |
| CN114401161B (en) | Communication optimizing equipment, method and communication system based on two buses | |
| CN212518806U (en) | Power supply control device | |
| CN214900868U (en) | Data transmission circuit, control device and intelligent household appliance | |
| CN209982364U (en) | Single crystal growing furnace high frequency switching power supply with wireless communication function | |
| CN217216612U (en) | Two-wire system direct current carrier communication circuit | |
| EP0794608A2 (en) | Trickle power supply | |
| CN218938816U (en) | Control circuit for differential pressure controller | |
| CN217007510U (en) | Low-voltage analog quantity acquisition platform |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |