CN212304873U - State acquisition device - Google Patents
State acquisition device Download PDFInfo
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- CN212304873U CN212304873U CN202020950106.9U CN202020950106U CN212304873U CN 212304873 U CN212304873 U CN 212304873U CN 202020950106 U CN202020950106 U CN 202020950106U CN 212304873 U CN212304873 U CN 212304873U
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Abstract
The utility model belongs to the technical field of communication, and provides a state acquisition device, a circuit structure comprises a controller, a power supply module and a debugging port, the power supply module is connected with the controller for power supply, the debugging port is connected with the controller for communication, the controller is also connected with an external expansion module with a switch signal acquisition circuit and a voltage acquisition processing circuit for communication, a module selection circuit and a signal processing circuit are additionally arranged in the circuit structure, the control end of the controller forms control connection with the external expansion module through the module selection circuit, the signal output end of the external expansion module is connected with the signal input end of the controller through the signal processing circuit, the controller is connected with the state acquisition modules such as the switch signal acquisition circuit and the like through the module selection circuit and the signal processing circuit, when the device is used in different environments, the state acquisition modules can be selectively used according to requirements, the convenience of the device is increased.
Description
Technical Field
The utility model belongs to the technical field of communication, a state collection system is related to.
Background
In the use of electrical equipment, the working state of each equipment needs to be monitored continuously, such as the magnitude of the input voltage and the working state of the equipment. The state acquisition device can complete the acquisition and analysis of the working state of the electrical equipment by means of equipment such as a mutual inductor.
The current state acquisition device's collection mode is single, and collection module and controller lug connection when needs realize multiple state collection, can need a plurality of collection device to splice, and the function can not carry out nimble selection, is difficult to adapt to multiple on-the-spot demand mode.
SUMMERY OF THE UTILITY MODEL
The utility model provides a state collection system has solved the single problem of collection mode among the prior art.
The state acquisition device comprises a circuit structure, wherein the circuit structure comprises a controller, a power supply module and a debugging port, the power supply module is in power supply connection with the controller, the debugging port is in communication connection with the controller, the controller is also in communication connection with an external expansion module with a switch signal acquisition circuit and a voltage acquisition processing circuit, a module selection circuit and a signal processing circuit are additionally arranged in the circuit structure, a control end of the controller is in control connection with the external expansion module through the module selection circuit, and a signal output end of the external expansion module is connected with a signal input end of the controller through the signal processing circuit.
The module selection circuit include signal transceiver U20 and the independent relay control circuit of multichannel that links to each other with signal transceiver U20 output, the controller through the lifting voltage source after with signal transceiver U20's input link to each other, relay control circuit include optical coupler U18 and relay, optical coupler U18's positive input connect 3.3V voltage source, optical coupler U18's negative pole input connect the output that corresponds on the signal transceiver U20, optical coupler U18's input between be connected with emitting diode LED16 in the forward direction, optical coupler U18's positive output connect 12V voltage source, optical coupler U18's negative pole output and the positive negative pole of the coil control end of relay are connected respectively with power ground, the output of relay connect connection terminal J13.
The signal processing circuit comprises a wire holder J12 and a multi-path voltage-stabilizing isolation circuit connected with a wire holder J12, the voltage-stabilizing isolation circuit comprises an optical coupler U14, the positive input end of the optical coupler U14 is connected with an interface corresponding to the wire holder J12 through a resistor R31, a voltage-stabilizing tube ZD1 and a resistor R30, the negative input end of the optical coupler U14 is connected with a power ground, a sliding rheostat RV1 is connected between the series point of the voltage-stabilizing tube ZD1 and the resistor R31 and the power ground, the positive output end of the optical coupler U14 is connected with a 3.3V voltage source, the negative output end of the optical coupler U14 is used as the output end of the voltage-stabilizing isolation circuit and is connected with the signal input end of the controller, and the negative signal output end of the optical coupler U14 is grounded through a resistor R37 and a light-emitting diode LED 13.
The acquisition input end of the voltage acquisition processing circuit is connected with a phase line and a zero line corresponding to an alternating current voltage source through a voltage transformer, the electric energy input end of the voltage acquisition processing circuit is connected with the relay control end of the corresponding module selection circuit, and the output end of the voltage acquisition processing circuit is connected with the signal input end of the signal processing circuit;
the voltage acquisition processing circuit comprises a preceding stage differential amplifier and a subsequent stage differential amplifier, wherein the same-direction input end of the preceding stage differential amplifier is connected with the anode output end of a voltage transformer, the reverse input end of the preceding stage differential amplifier is connected with the cathode input end of the voltage transformer, the reverse input end of the preceding stage differential amplifier is also connected with a lifting voltage source, the output end of the preceding stage differential amplifier is connected with the same-direction input end of the subsequent stage differential amplifier, the same-direction input end of the subsequent stage differential amplifier is also connected with the lifting voltage source, the output end of the subsequent stage differential amplifier is connected with the reverse input end of the subsequent stage differential amplifier, and the output end of the subsequent stage differential amplifier is used as the output end of the voltage acquisition processing circuit and is connected with the signal input end of the signal processing circuit.
The external expansion module also comprises a switch signal acquisition circuit, wherein the electric energy input end of the switch signal acquisition circuit is connected with the electric energy output end of the module selection circuit, and the output end of the switch signal acquisition circuit is connected with the signal input end of the signal processing circuit;
the switch signal acquisition circuit comprises an optical coupler U3, wherein the positive input end of the optical coupler U3 is used as the acquisition input end of the switch signal acquisition circuit through a resistor R11 and is connected with a tested device, the negative input end of the optical coupler U3 is grounded through a resistor R12, the output end of the optical coupler U3 is used as the electric energy input end of the switch signal acquisition circuit and is connected with the module selection circuit, and the connection point of the output end of the optical coupler U3 and the electric energy output end of the module selection circuit is used as the output end of the switch signal acquisition circuit.
The utility model discloses a theory of operation and beneficial effect do: the controller is connected with the switching signal acquisition circuit and other state acquisition modules by means of the module selection circuit and the signal processing circuit, and when the equipment is used in different environments, the state acquisition modules can be selectively used according to requirements, so that the convenience of the equipment is improved.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a block diagram of the present invention.
Fig. 2 is a circuit diagram of the module selection circuit of the present invention.
Fig. 3 is a circuit diagram of the signal processing circuit of the present invention.
Fig. 4 is a circuit diagram of the voltage acquisition and processing circuit of the present invention.
Fig. 5 is a circuit diagram of the switching signal acquisition circuit of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In a specific embodiment, as shown in fig. 1 of the specification, the state acquisition device comprises a circuit structure including a controller, a power supply module and a debugging port, the power supply module is in power supply connection with the controller, the debugging port is in communication connection with the controller, the controller is also in communication connection with an external expansion module having a switching signal acquisition circuit and a voltage acquisition processing circuit, a module selection circuit and a signal processing circuit are additionally arranged in the circuit structure, a control end of the controller is in control connection with the external expansion module through the module selection circuit, and a signal output end of the external expansion module is connected with a signal input end of the controller through the signal processing circuit.
The controller is connected with the state acquisition modules such as the switch signal acquisition circuit by means of the module selection circuit and the signal processing circuit, and when the equipment is used in different environments, the state acquisition modules can be expanded and selectively used according to requirements, such as current signal acquisition and power acquisition, so that the convenience of the equipment is improved. The operator inputs the instruction into the state acquisition device through the debugging port, the controller sends a control signal to the module selection circuit, and the use of the state acquisition module is selected through the control of the module selection circuit. The corresponding information of the state acquisition module is input into the controller through the signal processing circuit and is fed back to an operator through the debugging port. The power supply module in the attached figure 1 is used as a stable voltage source to supply power to a system in a dashed line frame.
As shown in fig. 2, the module selection circuit includes a signal transceiver U20 and a plurality of independent relay control circuits connected to the output of the signal transceiver U20, the controller is connected with the input end of the signal transceiver U20 after the voltage source is lifted, the relay control circuit comprises an optical coupler U18 and a relay, wherein the positive pole input end of the optical coupler U18 is connected with a 3.3V voltage source, the negative pole input end of the optical coupler U18 is connected with the corresponding output end of the signal transceiver U20, a light emitting diode LED16 is connected between the input ends of the optical coupler U18 in the forward direction, the positive output end of the optical coupler U18 is connected with a 12V voltage source, the negative output end of the optical coupler U18 and a power ground are respectively connected with the positive and negative electrodes of the coil control end of the relay, and the output end of the relay is connected with a wire holder J13.
The model of signal transceiver be 74HC245, can arrange in order the input to the control signal of controller and advance relay control circuit, optical coupler U18 among the relay control circuit can play the effect of pressure regulating, because the voltage of controller output is less, the relay can not directly use to optical coupler can provide great voltage for the relay, can play protection circuit's effect simultaneously, emitting diode LED16 can make things convenient for the staff to monitor terminal equipment's in service behavior.
As shown in fig. 3 of the specification, the signal processing circuit includes a wire holder J12 and a multi-path voltage stabilizing and isolating circuit connected to a wire holder J12, the voltage stabilizing and isolating circuit includes an optocoupler U14, an anode input end of the optocoupler U14 is connected to an interface corresponding to the wire holder J12 through a resistor R31, a voltage stabilizing tube ZD1 and a resistor R30, a cathode input end of the optocoupler U14 is connected to a power ground, a sliding rheostat RV1 is connected between a series connection point of the voltage stabilizing tube ZD1 and the resistor R31 and the power ground, an anode output end of the optocoupler U14 is connected to a 3.3V voltage source, a cathode output end of the optocoupler U14 is connected to a signal input end of a controller as an output end of the voltage stabilizing and isolating circuit, and a cathode signal output end of the optocoupler U14 is connected to the ground through a resistor R37 and a light emitting diode LED 13.
The voltage regulator tube ZD1 can prevent the voltage from damaging the rear-stage circuit, and provides the stable voltage for the rear-stage circuit, and the optocoupler plays the role of voltage reduction and isolation, and inputs the voltage signal into the controller after being converted.
As shown in fig. 4 of the specification, an acquisition input end of the voltage acquisition processing circuit is connected with a phase line and a zero line corresponding to an alternating current voltage source through a voltage transformer, an electric energy input end of the voltage acquisition processing circuit is connected with a relay control end of a corresponding module selection circuit, and an output end of the voltage acquisition processing circuit is connected with a signal input end of a signal processing circuit;
the voltage acquisition processing circuit comprises a preceding stage differential amplifier and a subsequent stage differential amplifier, wherein the same-direction input end of the preceding stage differential amplifier is connected with the anode output end of a voltage transformer, the reverse input end of the preceding stage differential amplifier is connected with the cathode input end of the voltage transformer, the reverse input end of the preceding stage differential amplifier is also connected with a lifting voltage source, the output end of the preceding stage differential amplifier is connected with the same-direction input end of the subsequent stage differential amplifier, the same-direction input end of the subsequent stage differential amplifier is also connected with the lifting voltage source, the output end of the subsequent stage differential amplifier is connected with the reverse input end of the subsequent stage differential amplifier, and the output end of the subsequent stage differential amplifier is used as the output end of the voltage acquisition processing circuit and is connected with the signal input end of the signal processing circuit.
The differential amplifier adopts a chip with the model number of AD8279 ZRD.
As shown in fig. 5 of the specification, the external expansion module further includes a switching signal acquisition circuit, an electric energy input end of the switching signal acquisition circuit is connected with an electric energy output end of the module selection circuit, and an output end of the switching signal acquisition circuit is connected with a signal input end of the signal processing circuit;
the switch signal acquisition circuit comprises an optical coupler U3, wherein the positive input end of the optical coupler U3 is used as the acquisition input end of the switch signal acquisition circuit through a resistor R11 and is connected with a tested device, the negative input end of the optical coupler U3 is grounded through a resistor R12, the output end of the optical coupler U3 is used as the electric energy input end of the switch signal acquisition circuit and is connected with the module selection circuit, and the connection point of the output end of the optical coupler U3 and the electric energy output end of the module selection circuit is used as the output end of the switch signal acquisition circuit.
Claims (5)
1. The state acquisition device comprises a circuit structure, wherein the circuit structure comprises a controller, a power supply module and a debugging port, the power supply module is in power supply connection with the controller, the debugging port is in communication connection with the controller, the controller is also in communication connection with an external expansion module with a switch signal acquisition circuit and a voltage acquisition processing circuit, and the state acquisition device is characterized in that a module selection circuit and a signal processing circuit are additionally arranged in the circuit structure, a control end of the controller forms control connection with the external expansion module through the module selection circuit, and a signal output end of the external expansion module is connected with a signal input end of the controller through the signal processing circuit.
2. The status collecting device according to claim 1, wherein the module selecting circuit comprises a signal transceiver U20 and a plurality of independent relay control circuits connected to the output terminal of the signal transceiver U20, the controller is connected to the input terminal of the signal transceiver U20 after being boosted by a voltage source, the relay control circuit comprises an optical coupler U18 and a relay, the positive input terminal of the optical coupler U18 is connected to a 3.3V voltage source, the negative input terminal of the optical coupler U18 is connected to the corresponding output terminal of the signal transceiver U20, a light emitting diode LED16 is connected between the input terminals of the optical coupler U18 in the forward direction, the positive output terminal of the optical coupler U18 is connected to a 12V voltage source, the negative output terminal of the optical coupler U18 is connected to the positive and negative terminals of the coil control terminal of the relay respectively, the output end of the relay is connected with a wire holder J13.
3. The status acquisition device as claimed in claim 1, wherein the signal processing circuit comprises a wire holder J12 and a multi-way voltage stabilizing and isolating circuit connected to a wire holder J12, the voltage stabilizing isolation circuit comprises an optical coupler U14, the positive input end of the optical coupler U14 is connected with the corresponding interface of a wire holder J12 through a resistor R31, a voltage stabilizing tube ZD1 and a resistor R30, the negative electrode input end of the optocoupler U14 is connected with a power ground, a slide rheostat RV1 is connected between the series point of the voltage regulator tube ZD1 and the resistor R31 and the power ground, the positive output end of the optical coupler U14 is connected with a 3.3V voltage source, the negative output end of the optical coupler U14 is used as the output end of the voltage stabilizing and isolating circuit and is connected with the signal input end of the controller, the negative signal output end of the optocoupler U14 is grounded through a resistor R37 and the light emitting diode LED 13.
4. The status acquisition device according to claim 1, wherein the acquisition input end of the voltage acquisition processing circuit is connected with the phase line and the zero line corresponding to the alternating current voltage source through a voltage transformer, the electric energy input end of the voltage acquisition processing circuit is connected with the relay control end of the corresponding module selection circuit, and the output end of the voltage acquisition processing circuit is connected with the signal input end of the signal processing circuit;
the voltage acquisition processing circuit comprises a preceding stage differential amplifier and a subsequent stage differential amplifier, wherein the same-direction input end of the preceding stage differential amplifier is connected with the anode output end of a voltage transformer, the reverse input end of the preceding stage differential amplifier is connected with the cathode input end of the voltage transformer, the reverse input end of the preceding stage differential amplifier is also connected with a lifting voltage source, the output end of the preceding stage differential amplifier is connected with the same-direction input end of the subsequent stage differential amplifier, the same-direction input end of the subsequent stage differential amplifier is also connected with the lifting voltage source, the output end of the subsequent stage differential amplifier is connected with the reverse input end of the subsequent stage differential amplifier, and the output end of the subsequent stage differential amplifier is used as the output end of the voltage acquisition processing circuit and is connected with the signal input end of the signal processing circuit.
5. The state acquisition device according to claim 1, wherein the external expansion module further comprises a switching signal acquisition circuit, an electric energy input end of the switching signal acquisition circuit is connected with an electric energy output end of the module selection circuit, and an output end of the switching signal acquisition circuit is connected with a signal input end of the signal processing circuit;
the switch signal acquisition circuit comprises an optical coupler U3, wherein the positive input end of the optical coupler U3 is used as the acquisition input end of the switch signal acquisition circuit through a resistor R11 and is connected with a tested device, the negative input end of the optical coupler U3 is grounded through a resistor R12, the output end of the optical coupler U3 is used as the electric energy input end of the switch signal acquisition circuit and is connected with the module selection circuit, and the connection point of the output end of the optical coupler U3 and the electric energy output end of the module selection circuit is used as the output end of the switch signal acquisition circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020950106.9U CN212304873U (en) | 2020-05-29 | 2020-05-29 | State acquisition device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020950106.9U CN212304873U (en) | 2020-05-29 | 2020-05-29 | State acquisition device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212304873U true CN212304873U (en) | 2021-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020950106.9U Active CN212304873U (en) | 2020-05-29 | 2020-05-29 | State acquisition device |
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| Country | Link |
|---|---|
| CN (1) | CN212304873U (en) |
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- 2020-05-29 CN CN202020950106.9U patent/CN212304873U/en active Active
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Address after: 071000 room 4-d-203, diangu science and technology center, 3088 Lekai North Street, Baoding City, Hebei Province Patentee after: Hebei jinkaiao Electrical Equipment Manufacturing Co.,Ltd. Address before: 071000 room 4-d-203, diangu science and technology center, 3088 Lekai North Street, Baoding City, Hebei Province Patentee before: BAODING JINKAIAO AUTOMATION CO.,LTD. |