CN205721471U - A kind of electric current output system of band self-diagnostic function - Google Patents
A kind of electric current output system of band self-diagnostic function Download PDFInfo
- Publication number
- CN205721471U CN205721471U CN201620284631.5U CN201620284631U CN205721471U CN 205721471 U CN205721471 U CN 205721471U CN 201620284631 U CN201620284631 U CN 201620284631U CN 205721471 U CN205721471 U CN 205721471U
- Authority
- CN
- China
- Prior art keywords
- voltage
- module
- current
- operational amplifier
- electric current
- 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
Abstract
The utility model discloses the electric current output system of a kind of band self-diagnostic function, wherein, Voltage to current transducer module includes switchable resistive module, load impedance, operational amplifier and voltage-reg-ulator tube, switchable resistive module is in series by multiple transfer resistances, home loop wired in parallel is in load impedance two ends, and voltage signal to be converted is converted to current signal by Voltage to current transducer module；Current detection module detects whether currently practical output electric current presses preset value output；Feedback voltage output module obtains the current voltage at voltage-reg-ulator tube two ends in Voltage to current transducer module, and generates feedback voltage according to current voltage；Adjustable voltage output module receives and generates corresponding regulation voltage according to feedback voltage and makes the current voltage at voltage-reg-ulator tube two ends be in preset range.Can solve the problem that existing analog quantity electric current exports the incomplete problem of system diagnostics by the system of above-mentioned each module composition.
Description
Technical field
This utility model relates to automatization and instrument field, more particularly, it relates to the electric current output system of a kind of band self-diagnostic function.
Background technology
Analog quantity electric current output system is usually used in the driving to production scene and the actuator of public work and controls, if output current run-away, the lighter causes the reduction of industrial control system performance, even afunction, severe one causes industry spot instrument out of control, breaking out of fire, blast, causing casualties, jeopardize public life and national security, this just requires that current value is accurately exported by predetermined value.Therefore, analog quantity electric current output system can detect output current failure accurately and rapidly, thus startup separator response mechanism ensures the stable extremely important to commercial production safety of control system.
Most of analog quantity electric current output system self of prior art seldom has diagnostic function, the most all carries out feedback regulation by analog quantity electric current output systematic sampling, this scheme failure response excessive cycle；Having individually the analog quantity electric current output system of self-diagnostic function, diagnosis coverage rate is the highest, not in place to indivedual Primary Components and inside and outside fault diagnosis, false alarm or situation about not reporting to the police easily occurs.
Therefore, currently need the analog quantity electric current output system of a kind of band self-diagnostic function badly, to solve the existing analog quantity electric current output incomplete problem of system diagnostics.
Utility model content
For solving above-mentioned technical problem, this utility model provides the electric current output system of a kind of band self-diagnostic function, and so that device in system is carried out comprehensive diagnostic, its implementation is simple, with low cost, have the strongest Practical significance.
For achieving the above object, the following technical scheme of this utility model offer:
A kind of electric current output system of band self-diagnostic function, including: Voltage to current transducer module, current detection module, feedback voltage output module, adjustable voltage output module and home loop module；
Described Voltage to current transducer module includes switchable resistive module, load impedance, operational amplifier and voltage-reg-ulator tube, described switchable resistive module is in series by multiple transfer resistances, described home loop wired in parallel is in described load impedance two ends, the input of described Voltage to current transducer module receives voltage signal to be converted, and described voltage signal is converted to current signal；
The first input end of described current detection module and the second input are connected to the two ends of described switchable resistive module, detect whether currently practical output electric current presses preset value output by gathering the current voltage at described switchable resistive module two ends；
The first input end of described feedback voltage output module is connected with the first end of described voltage-reg-ulator tube, second input is connected with the second end of described voltage-reg-ulator tube, obtain the voltage difference at described voltage-reg-ulator tube two ends, and generate feedback voltage according to the described voltage difference obtained, the outfan of described feedback voltage output module is connected with the input of described adjustable voltage output module, sends described feedback voltage to described adjustable voltage output module；
The power-feed section of described adjustable voltage output module accesses supply voltage, outfan is connected with described Voltage to current transducer module, the described feedback voltage that the described feedback voltage output module received sends is generated corresponding regulation voltage, and the described voltage difference that described regulation voltage is input in described voltage-reg-ulator tube regulate described voltage-reg-ulator tube two ends is in preset range.
Preferably, described voltage-reg-ulator tube includes: metal-oxide-semiconductor.
Preferably, described Voltage to current transducer module includes: operational amplifier, N-channel MOS pipe, load impedance and switchable resistive module.
Preferably, described Voltage to current transducer module includes: the first operational amplifier, N-channel MOS pipe, the first transfer resistance, connection resistance, the second operational amplifier, switchable resistive module, P-channel metal-oxide-semiconductor and load impedance.
Preferably, described home loop module includes: home loop.
Preferably, described system also includes: controller.
Preferably, described switchable resistive module includes two transfer resistances connected.
Preferably, the described transfer resistance in described switchable resistive module is precision resistance.
Can be seen that from technique scheme, the electric current output system of a kind of band self-diagnostic function provided by the utility model is on the basis of existing analog quantity electric current export technique, optimize switchable resistive module, devise the internal module being parallel to load impedance, coordinate current detection module, realize the fault diagnosis of device in system, internal system fault and load impedance fault can be distinguished, and implementation method is simple, with low cost, has the strongest Practical significance.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in describing below is only embodiment of the present utility model, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to the accompanying drawing provided.
Fig. 1 is the structural representation of the electric current output system of a kind of band self-diagnostic function disclosed in this utility model embodiment one；
Fig. 2 is the structural representation of the electric current output system of a kind of band self-diagnostic function disclosed in this utility model embodiment two；
Fig. 3 is the structural representation of the electric current output system of a kind of band self-diagnostic function disclosed in this utility model embodiment three；
Fig. 4 is the structural representation of this utility model home loop module；
Fig. 5 is the structural representation of this utility model switchable resistive module.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of this utility model protection.
Embodiment one
This utility model embodiment one discloses the electric current output system of a kind of band self-diagnostic function, its structural representation is as it is shown in figure 1, include Voltage to current transducer module 101, current detection module 102, feedback voltage output module 103, adjustable voltage output module 104 and home loop module 105；
Described Voltage to current transducer module 101 includes switchable resistive module (not shown in figure 1), load impedance (not shown in figure 1), operational amplifier (not shown in figure 1) and voltage-reg-ulator tube (not shown in figure 1), described switchable resistive module is in series by multiple transfer resistance (not shown in figure 1)s, described home loop module 105 is parallel to described load impedance two ends, the input of described Voltage to current transducer module 101 receives voltage signal to be converted, and described voltage signal is converted to current signal；
The first input end of described current detection module 102 and the second input are connected to the two ends of described switchable resistive module, detect whether currently practical output electric current presses preset value output by gathering the current voltage at described switchable resistive module two ends；
The first input end of described feedback voltage output module 103 is connected with the first end of described voltage-reg-ulator tube, second input is connected with the second end of described voltage-reg-ulator tube, obtain the voltage difference at described voltage-reg-ulator tube two ends, and generate feedback voltage according to the described voltage difference obtained, the outfan of described feedback voltage output module 103 is connected with the input of described adjustable voltage output module 104, sends described feedback voltage to described adjustable voltage output module 104；
The power-feed section of described adjustable voltage output module 104 accesses supply voltage, outfan is connected with described Voltage to current transducer module 101, the described feedback voltage sent by the described feedback voltage output module 103 received generates corresponding regulation voltage, and the described voltage difference that described regulation voltage is input in described voltage-reg-ulator tube regulate described voltage-reg-ulator tube two ends is in preset range.
In the electric current output system of band self-diagnostic function disclosed in this utility model embodiment, it is preferred that voltage-reg-ulator tube can be specially metal-oxide-semiconductor.
The electric current output system of a kind of band self-diagnostic function disclosed in this utility model embodiment, the input of Voltage to current transducer module receives voltage signal to be converted, the voltage signal received is converted to current signal；Current detection module input is connected with Voltage to current transducer module, and whether the transfer resistance both end voltage detection current output electric current gathering switchable resistive module in Voltage to current transducer module presses preset value output；Feedback voltage output module input is connected with Voltage to current transducer module, obtain the voltage difference at voltage-reg-ulator tube two ends in Voltage to current transducer module, and generate feedback voltage according to the voltage difference obtained, feedback voltage output module outfan is connected with adjustable voltage output module, sends the feedback voltage generated to adjustable voltage output module；Adjustable voltage output module feeder ear accesses supply voltage, outfan and Voltage to current transducer module and connects, and the regulation voltage generated according to feedback voltage sends to voltage-reg-ulator tube regulation voltage difference and is in preset range.This electric current visible output system can carry out self diagnosis, it is achieved to the fault diagnosis of device in system, and distinguish internal fault and load impedance fault, and implementation method is simple, with low cost, has the strongest Practical significance.
Embodiment two
In conjunction with the electric current output system of a kind of band self-diagnostic function disclosed in above-mentioned utility model embodiment one accompanying drawing 1, this utility model embodiment two also provides for the electric current output system of a kind of band self-diagnostic function, its structural representation as shown in Figure 2:
Wherein, described Voltage to current transducer module 101 includes: operational amplifier 1011, N-channel MOS pipe 1012, switchable resistive module 1013 and load impedance 1014；
The in-phase input end of described operational amplifier 1011 is voltage signal inputs；
Described switchable resistive module 1013 one end is connected with the source electrode of described N-channel MOS pipe 1012, and the other end is connected with ground voltage, and the electric current in described switchable resistive module 1013 Acquisition Circuit sends the inverting input to described operational amplifier 1011 by negative feedback；
The outfan of described operational amplifier 1011 is connected with the grid of described N-channel MOS pipe 1012；
The drain electrode of described N-channel MOS pipe 1012 is connected with described load impedance 1014；
Described home loop module 105 is parallel to described load impedance 1014 two ends.
In the electric current output system of band self-diagnostic function disclosed in this utility model, preferably, as shown in Figure 2, described home loop module 105 (concrete structure is as shown in Figure 4) specifically includes that home loop (not shown in Fig. 4), described home loop is made up of single-way switch 1051, the fixing end S1 of described single-way switch 1051 is connected with one end of described load impedance 1014, and the movable end S2 of described single-way switch 1051 is connected with the other end of described load impedance 1014；Preferably, described switchable resistive module 1013 (concrete structure is as shown in Figure 5) includes two transfer resistances connected (concrete structure is as shown in Figure 5)；Preferably, described transfer resistance is precision resistance.
In the electric current output system of band self-diagnostic function disclosed in this utility model, two transfer resistance R1 or R2 both end voltage (S3, S4 or S4, S5) may be incorporated for the sampling of current detection module, concordance in view of same model resistance characteristic, preferably, select the resistance of different resistance, so can reduce the risk that two resistance damage simultaneously.
Further, power of test in view of current detection module, preferably, two transfer resistance resistances should be not too small, 20 ohm can be more than with value in the range of: the resistance of each transfer resistance, two transfer resistances and at 100 ohms, when there is change in resistance in any resistance, all can be sampled by current detection module, it is thus eliminated that the blind spot of diagnosis when transfer resistance damages in prior art.
In the electric current output system of band self-diagnostic function disclosed in this utility model, it is preferred that as in figure 2 it is shown, also include: controller 106；The control end of described controller 106 is connected with the movable end S2 of the single-way switch 1051 described in described home loop module 105 (concrete structure is as shown in Figure 4), if by the current voltage difference obtaining described switchable resistive module 1013 two ends, described current detection module 102 detects that currently practical output electric current is not exported by preset value, the fixing end S1 of movable end S2 and described single-way switch 1051 that described controller 106 controls described single-way switch 1051 is connected, and constitutes loop.
In the electric current output system of band self-diagnostic function disclosed in this utility model, controller can automatically control the break-make of single-way switch, and in the case of current detection module detects that electric current normally exports, controller controls single-way switch and disconnects, and electric current normally flows through load impedance；When current detection module detects that electric current is abnormal, the movable end that controller can provide an of short duration pulse to make single-way switch connects with fixing end, make load impedance short circuit, current detection module measure loop electric current again, if now detecting, electric current is normal, then explanation current anomaly is caused by load impedance, is otherwise internal fault.
In sum, the electric current output system of a kind of band self-diagnostic function disclosed in this utility model, in Voltage to current transducer module, the in-phase input end of operational amplifier receives voltage signal to be converted, switchable resistive module one end is connected with the source electrode of N-channel MOS pipe, the other end is connected with ground voltage, the electric current of switchable resistive module Acquisition Circuit upper end sends the inverting input to operational amplifier by negative feedback, the outfan of operational amplifier is connected with the grid of N-channel MOS pipe, the drain electrode of N-channel MOS pipe is connected with load impedance, home loop wired in parallel is in load impedance two ends；Current detection module input is connected with Voltage to current transducer module, and whether the transfer resistance both end voltage detection current output electric current gathering switchable resistive module in Voltage to current transducer module presses preset value output；Feedback voltage output module input is connected with Voltage to current transducer module, obtain the voltage difference at N-channel MOS pipe two ends in Voltage to current transducer module, and generate feedback voltage according to the voltage difference obtained, feedback voltage output module outfan is connected with adjustable voltage output module, sends the feedback voltage generated to adjustable voltage output module；Adjustable voltage output module feeder ear accesses supply voltage, outfan and Voltage to current transducer module and connects, and the regulation voltage generated according to feedback voltage sends to N-channel MOS pipe regulation voltage difference and is in preset range.
Visible, the electric current output system of this band self-diagnostic function can carry out self diagnosis when load impedance floating connection, it is achieved to the fault diagnosis of device in system, and distinguishes internal fault and load impedance fault, and implementation method is simple, with low cost, there is the strongest Practical significance.
Embodiment three
In conjunction with the electric current output system of a kind of band self-diagnostic function disclosed in above-mentioned utility model embodiment one accompanying drawing 1, this utility model embodiment three also provides for the electric current output system of a kind of band self-diagnostic function, its structural representation as shown in Figure 3:
Wherein, described Voltage to current transducer module 101 includes: the first operational amplifier 1015, N-channel MOS pipe the 1016, first transfer resistance 1017, connection resistance the 1018, second operational amplifier 1019, switchable resistive module 1013, P-channel metal-oxide-semiconductor 10190 and load impedance 1014；
The in-phase input end of described first operational amplifier 1015 is voltage signal inputs；
One end of described first transfer resistance 1017 is connected with the source electrode of described N-channel MOS pipe 1016, the other end is connected with ground voltage, and the electric current in described first transfer resistance 1017 Acquisition Circuit sends the inverting input to described first operational amplifier 1015 by negative feedback；
The outfan of described first operational amplifier 1015 is connected with the grid of described N-channel MOS pipe 1016；
One end of described connection resistance 1018 is connected with the drain electrode of described N-channel MOS pipe 1016, and the other end is connected with described adjustable voltage output module 104；
The drain electrode of described N-channel MOS pipe 1016 is connected with the in-phase input end of described second operational amplifier 1019；
One end of described switchable resistive module 1013 is connected with the drain electrode of described P-channel metal-oxide-semiconductor 10190, the other end is connected with described adjustable voltage output module 104, and the electric current that described switchable resistive module 1013 gathers on another loop sends the inverting input to described second operational amplifier 1019 by negative feedback；
The outfan of described second operational amplifier 1019 is connected with the grid of described P-channel metal-oxide-semiconductor 10190；
One end of described load impedance 1014 is connected with the source electrode of described P-channel metal-oxide-semiconductor 10190, and the other end is connected with ground voltage；
Described home loop module 105 is parallel to described load impedance 1014 two ends.
In the electric current output system of band self-diagnostic function disclosed in this utility model, preferably, as shown in Figure 3, described home loop module 105 (concrete structure is as shown in Figure 4) specifically includes that home loop (not shown in Fig. 4), described home loop is made up of single-way switch 1051, the fixing end S1 of described single-way switch 1051 is connected with one end of described load impedance 1014, and the movable end S2 of described single-way switch 1051 is connected with the other end of described load impedance 1014；Preferably, described switchable resistive module 1013 (concrete structure is as shown in Figure 5) includes two transfer resistances connected (concrete structure is as shown in Figure 5)；Preferably, described transfer resistance is precision resistance.
In the electric current output system of band self-diagnostic function disclosed in this utility model, two transfer resistance R1 or R2 both end voltage (S3, S4 or S4, S5) may be incorporated for the sampling of current detection module, concordance in view of same model resistance characteristic, preferably, select the resistance of different resistance, so can reduce the risk that two resistance damage simultaneously.
Further, power of test in view of current detection module, preferably, two transfer resistance resistances should be not too small, 20 ohm can be more than with value in the range of: the resistance of each transfer resistance, two transfer resistances and at 100 ohms, when there is change in resistance in any resistance, all can be sampled by current detection module, it is thus eliminated that the blind spot of diagnosis when transfer resistance damages in prior art.
In the electric current output system of band self-diagnostic function disclosed in this utility model, it is preferred that as it is shown on figure 3, also include: controller 106；The control end of described controller 106 is connected with the movable end S2 of the single-way switch 1051 described in described home loop module 105 (concrete structure is as shown in Figure 4), if by the current voltage difference obtaining described switchable resistive module 1013 two ends, described current detection module 102 detects that currently practical output electric current is not exported by preset value, the fixing end S1 of movable end S2 and described single-way switch 1051 that described controller 106 controls described single-way switch 1051 is connected, and constitutes loop.
In the electric current output system of band self-diagnostic function disclosed in this utility model, controller can automatically control the break-make of single-way switch, and in the case of current detection module detects that electric current normally exports, controller controls single-way switch and disconnects, and electric current normally flows through load impedance；When current detection module detects that electric current is abnormal, the movable end that controller can provide an of short duration pulse to make single-way switch connects with fixing end, make load impedance short circuit, current detection module measure loop electric current again, if now detecting, electric current is normal, then explanation current anomaly is caused by load impedance, is otherwise internal fault.
In sum, the electric current output system of a kind of band self-diagnostic function disclosed in this utility model is on the basis of existing analog quantity electric current export technique, optimize switchable resistive module, devise the internal module being parallel to load impedance, coordinate current detection module, realize the fault diagnosis of device in system, internal system fault and load impedance fault can be distinguished, and implementation method is simple, with low cost, has the strongest Practical significance.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses this utility model.Multiple amendment to these embodiments will be apparent from for those skilled in the art, and generic principles defined herein can realize in the case of without departing from spirit or scope of the present utility model in other embodiments.Therefore, this utility model is not intended to be limited to the embodiments shown herein, and is to fit to the widest scope consistent with principles disclosed herein and features of novelty.
Claims (8)
1. the electric current output system of a band self-diagnostic function, it is characterised in that including: Voltage to current transducer module, current detection module, feedback voltage output module, adjustable voltage output module and home loop module；
Described Voltage to current transducer module includes switchable resistive module, load impedance, operational amplifier and voltage-reg-ulator tube, described switchable resistive module is in series by multiple transfer resistances, described home loop wired in parallel is in described load impedance two ends, the input of described Voltage to current transducer module receives voltage signal to be converted, and described voltage signal is converted to current signal；
The first input end of described current detection module and the second input are connected to the two ends of described switchable resistive module, detect whether currently practical output electric current presses preset value output by gathering the current voltage at described switchable resistive module two ends；
The first input end of described feedback voltage output module is connected with the first end of described voltage-reg-ulator tube, second input is connected with the second end of described voltage-reg-ulator tube, obtain the voltage difference at described voltage-reg-ulator tube two ends, and generate feedback voltage according to the described voltage difference obtained, the outfan of described feedback voltage output module is connected with the input of described adjustable voltage output module, sends described feedback voltage to described adjustable voltage output module；
The power-feed section of described adjustable voltage output module accesses supply voltage, outfan is connected with described Voltage to current transducer module, the described feedback voltage that the described feedback voltage output module received sends is generated corresponding regulation voltage, and the described voltage difference that described regulation voltage is input in described voltage-reg-ulator tube regulate described voltage-reg-ulator tube two ends is in preset range.
System the most according to claim 1, it is characterised in that described voltage-reg-ulator tube includes: metal-oxide-semiconductor.
System the most according to claim 2, it is characterised in that described Voltage to current transducer module includes: operational amplifier, N-channel MOS pipe, load impedance and switchable resistive module；
The in-phase input end of described operational amplifier is voltage signal inputs；
Described switchable resistive module one end is connected with the source electrode of described N-channel MOS pipe, and the other end is connected with ground voltage, and the electric current in described switchable resistive module Acquisition Circuit sends the inverting input to described operational amplifier by negative feedback；
The outfan of described operational amplifier is connected with the grid of described N-channel MOS pipe；
The drain electrode of described N-channel MOS pipe is connected with described load impedance.
System the most according to claim 2, it is characterized in that, described Voltage to current transducer module includes: the first operational amplifier, N-channel MOS pipe, the first transfer resistance, connection resistance, the second operational amplifier, switchable resistive module, P-channel metal-oxide-semiconductor and load impedance；
The in-phase input end of described first operational amplifier is voltage signal inputs；
One end of described first transfer resistance is connected with the source electrode of described N-channel MOS pipe, and the other end is connected with ground voltage, and the electric current in described first transfer resistance Acquisition Circuit sends the inverting input to described first operational amplifier by negative feedback；
The outfan of described first operational amplifier is connected with the grid of described N-channel MOS pipe；
One end of described connection resistance is connected with the drain electrode of described N-channel MOS pipe, and the other end is connected with described adjustable voltage output module；
The drain electrode of described N-channel MOS pipe is connected with the in-phase input end of described second operational amplifier；
One end of described switchable resistive module is connected with the drain electrode of described P-channel metal-oxide-semiconductor, the other end is connected with described adjustable voltage output module, and the electric current that described switchable resistive module gathers on another loop sends the inverting input to described second operational amplifier by negative feedback；
The outfan of described second operational amplifier is connected with the grid of described P-channel metal-oxide-semiconductor；
One end of described load impedance is connected with the source electrode of described P-channel metal-oxide-semiconductor, and the other end is connected with ground voltage.
5. according to the system described in any one in Claims 1 to 4, it is characterised in that described home loop module includes: home loop；
Described home loop is made up of single-way switch；
The fixing end of described single-way switch is connected with one end of described load impedance, and the movable end of described single-way switch is connected with the other end of described load impedance.
System the most according to claim 5, it is characterised in that described system also includes: controller；
The end that controls of described controller is connected with the movable end of described single-way switch, if by obtaining the current voltage difference in described voltage-reg-ulator tube two ends, described current detection module detects that currently practical output electric current is not exported by preset value, described controller controls described movable end and is connected with described fixing end, constitutes described home loop.
7. according to the system described in any one in Claims 1 to 4, it is characterised in that described switchable resistive module includes two transfer resistances connected.
8. according to the system described in any one in Claims 1 to 4, it is characterised in that the described transfer resistance in described switchable resistive module is precision resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620284631.5U CN205721471U (en) | 2016-04-07 | 2016-04-07 | A kind of electric current output system of band self-diagnostic function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620284631.5U CN205721471U (en) | 2016-04-07 | 2016-04-07 | A kind of electric current output system of band self-diagnostic function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205721471U true CN205721471U (en) | 2016-11-23 |
Family
ID=57310141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620284631.5U Active CN205721471U (en) | 2016-04-07 | 2016-04-07 | A kind of electric current output system of band self-diagnostic function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205721471U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107590041A (en) * | 2017-09-30 | 2018-01-16 | 郑州云海信息技术有限公司 | A kind of voltage weighted feedback system of more feedback points |
| CN107843279A (en) * | 2017-11-02 | 2018-03-27 | 宁波中车时代传感技术有限公司 | A kind of sensor circuit with Autonomous test failure and self-regulating function |
| CN108919775A (en) * | 2018-06-11 | 2018-11-30 | 中国计量科学研究院 | A kind of test device and method of control system |
| CN111190047A (en) * | 2019-10-11 | 2020-05-22 | 浙江中控技术股份有限公司 | Current acquisition diagnosis circuit and failure diagnosis method thereof |
| CN112558674A (en) * | 2020-12-02 | 2021-03-26 | 浙江中控技术股份有限公司 | Analog quantity current output system |
| CN113110671A (en) * | 2021-04-16 | 2021-07-13 | 浙江正泰中自控制工程有限公司 | Variable power consumption analog quantity current output circuit for control system |
| CN113849028A (en) * | 2021-10-25 | 2021-12-28 | 杭州和利时自动化有限公司 | Current output type AO circuit |
| CN116505533A (en) * | 2023-06-25 | 2023-07-28 | 国家电投集团沧州新能源发电有限公司 | New energy power supply system |
-
2016
- 2016-04-07 CN CN201620284631.5U patent/CN205721471U/en active Active
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107590041A (en) * | 2017-09-30 | 2018-01-16 | 郑州云海信息技术有限公司 | A kind of voltage weighted feedback system of more feedback points |
| CN107590041B (en) * | 2017-09-30 | 2023-09-08 | 郑州云海信息技术有限公司 | Voltage weighted feedback system with multiple feedback points |
| CN107843279A (en) * | 2017-11-02 | 2018-03-27 | 宁波中车时代传感技术有限公司 | A kind of sensor circuit with Autonomous test failure and self-regulating function |
| CN107843279B (en) * | 2017-11-02 | 2020-09-25 | 宁波中车时代传感技术有限公司 | Sensor circuit with self-detection fault and self-regulation functions |
| CN108919775A (en) * | 2018-06-11 | 2018-11-30 | 中国计量科学研究院 | A kind of test device and method of control system |
| CN108919775B (en) * | 2018-06-11 | 2020-08-14 | 中国计量科学研究院 | Testing device and method for control system |
| CN111190047B (en) * | 2019-10-11 | 2022-03-25 | 浙江中控技术股份有限公司 | Current acquisition diagnosis circuit and failure diagnosis method thereof |
| CN111190047A (en) * | 2019-10-11 | 2020-05-22 | 浙江中控技术股份有限公司 | Current acquisition diagnosis circuit and failure diagnosis method thereof |
| CN112558674A (en) * | 2020-12-02 | 2021-03-26 | 浙江中控技术股份有限公司 | Analog quantity current output system |
| CN112558674B (en) * | 2020-12-02 | 2023-02-21 | 浙江中控技术股份有限公司 | Analog quantity current output system |
| CN113110671A (en) * | 2021-04-16 | 2021-07-13 | 浙江正泰中自控制工程有限公司 | Variable power consumption analog quantity current output circuit for control system |
| CN113849028A (en) * | 2021-10-25 | 2021-12-28 | 杭州和利时自动化有限公司 | Current output type AO circuit |
| CN116505533A (en) * | 2023-06-25 | 2023-07-28 | 国家电投集团沧州新能源发电有限公司 | New energy power supply system |
| CN116505533B (en) * | 2023-06-25 | 2023-09-01 | 国家电投集团沧州新能源发电有限公司 | New energy power supply system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205721471U (en) | A kind of electric current output system of band self-diagnostic function | |
| CN105445606B (en) | A kind of high voltage power cable joint fault monitoring method based on distortion measurement | |
| CN103713238B (en) | The double-colored trouble indicator that warning current value can be established | |
| EP3477321B1 (en) | Current detecting apparatus and battery management system | |
| CN104049150A (en) | Device and method for detecting photovoltaic module-to-ground insulativity and photovoltaic grid-connected power generation system | |
| CN200976032Y (en) | Malfunction detection device for resistance wire of heating stove | |
| CN112666488A (en) | Ground fault detection method and device | |
| JP7086169B2 (en) | Charging device test system and method | |
| CN104297611A (en) | Transformer sampling circuit | |
| CN103311966B (en) | It is applied to battery adaptive controller and the method for batteries in parallel connection group | |
| CN111025102B (en) | Low-voltage arc fault detection method and device based on voltage waveform analysis | |
| CN108037342B (en) | Automatic balance bridge and impedance measurement method thereof | |
| CN204964702U (en) | Operational amplifier detects compensating network | |
| CN204578064U (en) | A kind of line protective devices with humidity alarm | |
| CN106556771A (en) | A kind of priming system circuitry self test surveys method | |
| CN109239437A (en) | A kind of current sensor of the redundancy feature containing self-test | |
| CN111366873A (en) | Electric leakage detection circuit and electric leakage detection method for electric water heater | |
| JP5518657B2 (en) | Ground resistance meter | |
| KR101646070B1 (en) | Circuit for sensing a short on plant | |
| CN204374371U (en) | A kind of D.C. isolation monitoring device detects the failure alarm circuit of electric bridge | |
| CN109855119B (en) | Thermocouple and NTC temperature sensor fault detection method for gas stove | |
| CN209590182U (en) | A kind of iron core multipoint earthing of clamping piece monitors current-limiting apparatus automatically | |
| CN104514908B (en) | Monitoring type single-channel solenoid valve control circuit for gas appliance | |
| CN105513250A (en) | Computer room direct-current power source fire protection system with remote alarm function | |
| CN210867643U (en) | Digital display pressure switch signal conversion circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |