CN210376665U - Online monitoring system for hump radar equipment - Google Patents
Online monitoring system for hump radar equipment Download PDFInfo
- Publication number
- CN210376665U CN210376665U CN201920923797.0U CN201920923797U CN210376665U CN 210376665 U CN210376665 U CN 210376665U CN 201920923797 U CN201920923797 U CN 201920923797U CN 210376665 U CN210376665 U CN 210376665U
- Authority
- CN
- China
- Prior art keywords
- operational amplifier
- voltage
- detection circuit
- hump
- output end
- 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.)
- Withdrawn - After Issue
Links
- 238000012544 monitoring process Methods 0.000 title claims abstract description 20
- 238000001514 detection method Methods 0.000 claims abstract description 63
- 230000001052 transient effect Effects 0.000 claims description 9
- 238000012423 maintenance Methods 0.000 abstract description 5
- 238000004458 analytical method Methods 0.000 abstract description 2
- 238000004364 calculation method Methods 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 6
- 238000002955 isolation Methods 0.000 description 6
- 238000005070 sampling Methods 0.000 description 6
- 238000012545 processing Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 4
- 230000003750 conditioning effect Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 101000974343 Homo sapiens Nuclear receptor coactivator 4 Proteins 0.000 description 2
- 101001134861 Homo sapiens Pericentriolar material 1 protein Proteins 0.000 description 2
- 102100022927 Nuclear receptor coactivator 4 Human genes 0.000 description 2
- 102100033422 Pericentriolar material 1 protein Human genes 0.000 description 2
- 102100036894 Protein patched homolog 2 Human genes 0.000 description 2
- 101710161395 Protein patched homolog 2 Proteins 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 238000013024 troubleshooting Methods 0.000 description 2
- 102100028680 Protein patched homolog 1 Human genes 0.000 description 1
- 101710161390 Protein patched homolog 1 Proteins 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Images
Landscapes
- Radar Systems Or Details Thereof (AREA)
Abstract
The utility model provides a hump radar equipment on-line monitoring system, through setting up current detection circuit and voltage detection circuit, can be in succession, real-time monitoring hump radar equipment send end electric current, self-checking voltage and impulse voltage, according to electric current and the voltage analysis radar equipment running state that obtains that detects, whether trouble and fault location, the speed of a motor vehicle according to the detection data calculation train simultaneously judges whether the speed of a motor vehicle is greater than the threshold value. The utility model discloses it is high, multiple functional to detect the precision, can realize the real-time supervision to hump radar equipment to the record detects data, can satisfy electric affairs section, hump workshop work area to the management of hump station radar equipment and the actual need of on-the-spot maintenance, has compensatied the current internal vacancy about hump radar equipment on-line monitoring.
Description
Technical Field
The utility model relates to a track traffic monitoring field, concretely relates to hump radar equipment on-line monitoring system.
Background
Along with the gradual realization of hump automation in marshalling stations in China, the daily maintenance problem of hump signal equipment is highlighted day by day, and the daily maintenance of radar equipment in the signal equipment in the prior art mainly has the following salient problems:
1. at present, real-time online monitoring of electrical parameters of radar equipment in a hump station is in a vacant state, so that early-stage fault hidden dangers of the radar equipment cannot be found in time, and when the radar fails, the recorded data of the electrical parameters before and after the failure are lacked, so that great troubles are caused for field fault positioning and fault troubleshooting, and the field fault troubleshooting efficiency is seriously influenced.
2. Daily maintenance of radar equipment in a field work area only stops on testing the output voltage of the radar by using a direct-current gear of a handheld common multimeter. There is no system for measuring the self-test voltage, the pulse frequency and the vehicle speed of each radar.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to prior art's not enough to a hump radar equipment on-line monitoring system is provided, concrete scheme is as follows:
a online monitoring system for a hump radar device comprises a processor, a current detection circuit and a voltage detection circuit;
the voltage detection circuit is provided with a first fuse, a second fuse, a first resistor, a second resistor, a first TVS (transient voltage suppressor) tube, a common mode inductor, a first operational amplifier, a second operational amplifier, a photoelectric isolator, a third operational amplifier and a fourth operational amplifier;
one end of the first fuse is used for external negative input, the other end of the first fuse is connected with one end of a first resistor, one end of the first resistor is connected with the first end of a first TVS tube, the second end of the first TVS tube is connected with one end of a second resistor, the other end of the second resistor is connected with one end of a second fuse, and the other end of the second fuse is used for external positive input;
the first end and the second end of the first TVS tube are respectively connected with a pin 1 and a pin 2 of the common mode inductor; a pin 3 of the common mode inductor is connected with a positive input end of a first operational amplifier, and a negative input end of the first operational amplifier is connected with an output end of the first operational amplifier; the pin 4 of the common mode inductor is connected with the negative input end of a second operational amplifier, the positive input end of the second operational amplifier is connected with the output end of a first operational amplifier, the output end of the second operational amplifier is connected with the first input of a photoelectric isolator, and the second input of the photoelectric isolator is used for being connected with a power supply; the pin 4 of the common mode inductor and the output end of the first operational amplifier are also respectively connected with the first output end and the second output end of the photoelectric isolator;
a third output end and a fourth output end of the photoelectric isolator are respectively connected with a negative input end and a positive input end of a third operational amplifier; the output end of the third operational amplifier is connected with the positive input end of a fourth operational amplifier, and the positive input end and the negative input end of the fourth operational amplifier are respectively connected with the output end of the fourth operational amplifier; and the output end of the fourth operational amplifier is used as the output end of the voltage detection circuit.
Further, the voltage detection circuit includes: the voltage detection circuit comprises a first voltage detection circuit used for detecting radar self-detection voltage and a second voltage detection circuit used for detecting radar pulse voltage.
Furthermore, the monitoring system further comprises a third voltage detection circuit for detecting the voltage of the sending end of the radar equipment, wherein a third fuse, a fourth fuse, a third resistor, a fourth resistor, a second TVS (transient voltage suppressor) tube, an electromagnetic isolator, a fifth operational amplifier and a sixth operational amplifier are arranged in the third voltage detection circuit;
one end of the third fuse is used for being connected with external negative input, the other end of the third fuse is connected with one end of a third resistor, the other end of the third resistor is connected with the first end of a second TVS (transient voltage suppressor) tube, the second end of the second TVS tube is connected with one end of a fourth resistor, the other end of the fourth resistor is connected with one end of a fourth fuse, and the other end of the fourth fuse is used for being connected with external positive input;
the first end and the second end of the second TVS tube are respectively connected with the first pin and the second pin of the electromagnetic isolator; a third pin and a fourth pin of the electromagnetic isolator are respectively connected with a negative input end and a positive input end of a fifth operational amplifier; the output end of the fifth operational amplifier is connected with the negative input end of the sixth operational amplifier, the positive input end of the sixth operational amplifier is used for being connected with a power supply, and the output end of the sixth operational amplifier is used as the output end of the third voltage detection circuit.
Further, a current sensor is arranged in the current detection circuit, and an output end of the current sensor is connected with an output end of the current detection circuit through a third TVS tube, a seventh operational amplifier and an eighth operational amplifier; the output end of the current detection circuit is connected with the processor.
The utility model discloses relative prior art has outstanding substantive characteristics and the progress that is showing, specifically speaking, the utility model has the following advantages:
the utility model discloses a set up current detection circuit and voltage detection circuit, can monitor sending end electric current, self-checking voltage and impulse voltage of hump radar equipment in succession, in real time, according to electric current and the voltage analysis radar equipment running state that detects and obtain, whether trouble and fault location, the speed of a motor vehicle according to the detection data calculation train simultaneously judges whether the speed of a motor vehicle is greater than the threshold value. The utility model discloses it is high, multiple functional to detect the precision, can realize the real-time supervision to hump radar equipment to the record detects data, can satisfy electric affairs section, hump workshop work area to the management of hump station radar equipment and the actual need of on-the-spot maintenance, has compensatied the current internal vacancy about hump radar equipment on-line monitoring.
Drawings
Fig. 1 is a flow chart of a method in an embodiment of the invention;
fig. 2 is a circuit diagram of voltage detection in an embodiment of the present invention;
fig. 3 is a schematic diagram of the self-checking voltage detection position in the embodiment of the present invention;
FIG. 4 is a schematic diagram of a voltage detection circuit of a radar transmitting end in an embodiment of the present invention;
fig. 5 is a circuit diagram of the current detection circuit in the embodiment of the present invention;
fig. 6 is a schematic diagram of a pin of the DSP in the embodiment of the present invention.
Detailed Description
The technical solution of the present invention will be described in further detail through the following embodiments.
Examples
System architecture
The on-line monitoring system of the hump radar equipment in the embodiment comprises a sending end current detection circuit, a sending end voltage detection circuit, a self-checking voltage detection circuit and a pulse voltage detection circuit, wherein detection positions of sending end voltage, sending end current and self-checking voltage are all on a distribution board, and a sampling position of radar pulse voltage is at a radar output end of the distribution board. The voltage and current detection circuits are all connected with the processing unit, and the processing unit is connected with the remote terminal to realize real-time monitoring of the voltage of the sending end, the current of the sending end and the voltage of the receiving end of the radar equipment.
Self-checking voltage circuit
The sampling position of the radar self-test voltage is at the distribution panel, such as 20 and 21 positions in fig. 3, the voltage detection circuit of the self-test voltage sends the detected self-test voltage to the processor, and the processor automatically judges the radar state (self-test state or speed measurement state) as shown in fig. 6. The self-test voltage detection circuit structure is shown in fig. 2, and the detection circuit is provided with a PUSE3, a PTC3, an R35, a TVS tube TVS3, a PUSE4, a PTC4, an R36, a common mode inductor L1, an operational amplifier U1A, an operational amplifier U1B, a photoelectric isolator U2, an operational amplifier U3A and an operational amplifier U3B.
One end of the PUSE3 is used for being connected with an external negative input IN +, the other end of the PUSE3 is sequentially connected with the PTC3 and the R35 IN series, the other end of the R35 is connected with the first end of the TVS3, the second end of the TVS3 is sequentially connected with the R36, the PTC4 and the PUSE4, and the other end of the PUSE4 is used for being connected with an external positive input IN +.
The first end and the second end of the TVS3 are respectively connected with pin 1 and pin 2 of the common mode inductor L1; a pin 3 of the common-mode inductor L1 is connected with a positive input end of the operational amplifier U1A, and a negative input end of the operational amplifier U1A is connected with an output end of the operational amplifier U1A; a pin 4 of the common-mode inductor L1 is connected with a negative input end of an operational amplifier U1B, a positive input end of an operational amplifier U1B is connected with an output end of an operational amplifier U1A, an output end of the operational amplifier U1B is connected with a first input of a photoelectric isolator U2, and a second input of the photoelectric isolator U2 is used for connecting a power supply; the pin 4 of the common-mode inductor L1 and the output end of the operational amplifier U1A are also respectively connected with the first output end and the second output end of the photoelectric isolator U2;
a third output end and a fourth output end of the photoelectric isolator U2 are respectively connected with a negative input end and a positive input end of the operational amplifier U3A; the output end of the operational amplifier U3A is connected with the anode input end of the operational amplifier U3B, and the anode input end and the cathode input end of the operational amplifier U3B are respectively connected with the output end of the operational amplifier U3B; the output end of the operational amplifier U3B is used as the output end of the voltage detection circuit.
The TVS3 is a transient voltage suppression diode, and the L1 is a common mode inductor for filtering common mode interference, in this embodiment, the model is SF0602221 YL; u2 is photoelectric isolation, and model number in this embodiment is HCNR 201.
U1A, U1B, U3A, U3B are operational amplifiers for conditioning signals, U1A is a follower, and follows the signal that the voltage of input sampling resistor R1 was increased through VREF and outputs. The U1B feeds back the U2 output signal to the input end of the U2, and the effect is to cancel the nonlinearity of the through path through the nonlinearity of the feedback path, so as to realize the linear transmission of the signal. The function of U3A is to convert the current signal output by U2 into a voltage signal. The function of U3B is low pass filtering and amplification of the signal. After signal conditioning, the output end AD3 of the self-detection voltage detection circuit is connected with a pin of the DSP, and the acquisition is completed by the DSP.
The sampling position of radar pulse voltage is at the deconcentrator radar output end, as 22, 23 positions in fig. 3, gather radar output pulse signal's peak-to-peak voltage in real time, stipulate in this embodiment that pulse peak-to-peak voltage is not less than 8V, when the peak-to-peak voltage of gathering is less than 8V, in time report to the police. The circuit diagram of the pulse voltage detection circuit is the same as that of the self-test voltage detection circuit, as shown in fig. 2.
Sending end detection circuit
The working voltage and current of the radar transmitting end are directly supplied to the outdoor through the distribution board by the output of the power supply panel, and the detection positions of the voltage and current of the transmitting end are LJZ220 and LJF220 at the positions of the lightning protection distribution cabinet in figure 3. The voltage acquisition of the sending end is that two sampling lines are connected in parallel to LJZ220 and LJF220, the detection circuit is shown in figure 4, the input end of the circuit passes through a fuse, a PTC, a high resistance and a TVS1, then passes through an electromagnetic isolation device TR1, conditions signals through two operational amplifiers and outputs AD1, the AD1 is directly connected to a pin of a DSP, and the DSP finishes the acquisition.
One end of the PUSE1 is used for connecting an external negative input V1, the other end of the PUSE1 is sequentially connected with the PTC1 and the R42, the other end of the R42 is connected with the first end of the TVS1, the second end of the TVS1 is connected with one end of the R43, the other end of the R43 is connected with one end of the PTC2, the other end of the PTC2 is connected with one end of the PUSE2, and the other end of the PUSE2 is used for connecting an external positive input V +.
The first end and the second end of the TVS1 are respectively connected with the first pin and the second pin of the electromagnetic isolator TR1 through resistors R29 and R30; a third pin and a fourth pin of the electromagnetic isolator TR1 are respectively connected with a negative input end and a positive input end of the operational amplifier U10A; the output end of the operational amplifier U10A is connected with the negative input end of the operational amplifier U10B, the positive input end of the operational amplifier U10B is used for connecting a power supply, and the output end of the operational amplifier U10B is used as the output end of the sending end voltage detection circuit.
The first stage operational amplifier U10A converts current to voltage because TR1 is an electromagnetic isolation module with 1mA input/1 mA output, so the first stage operational amplifier U10A converts current to voltage. The second-stage operational amplifier U10B is used for signal conditioning, signal amplification, lifting and filtering. The TVS (transient voltage suppressor) can prevent the TVS from being serially connected into a measuring circuit of a later stage due to similar high-voltage impact, and the high-voltage resistance of the module is improved.
The sending end current detection circuit is as shown in fig. 5, the isolation of the sending end current detection circuit from a tested cable is ensured by adopting a feedthrough transformer, namely, a line LJF220 in fig. 3 passes through the center of the transformer, is output after being collected by the transformer through electromagnetic induction, is output after being sampled, protected by TVS2 and conditioned by operational amplifier, and is output as AD2, the AD2 is directly connected to a pin of a DSP, and the collection is completed by the DSP.
Principle of method
The described circuit structure is used for detecting the hump radar equipment, acquiring voltage and current data of corresponding positions, and processing and analyzing the acquired data. As shown in fig. 1, detecting a self-checking voltage of a radar at a radar distribution panel, comparing the self-checking voltage with a corresponding threshold, and if the self-checking voltage is greater than the corresponding threshold, the radar is in a self-checking state; and if the self-checking voltage is smaller than the corresponding threshold value, the radar is in a speed measuring state, and the vehicle speed is calculated.
If the radar is in a self-checking state, judging whether the frequency output by the radar is a standard frequency, and if so, sending radar normal information; if not, sending out radar fault alarm information.
The pulse frequency and the vehicle speed of the hump radar are obtained by the DSP through fast capturing and calculating according to original signals (namely pulse voltage) of radar output ends (22 and 23 in figure 3) collected by a distribution cabinet, and the vehicle sliding speed is calculated in real time according to the pulse frequency, the radar type and the radar state. The radar types in this embodiment include two types: 35.1GHz and 37.5 GHz.
In this embodiment, the radar state is determined according to the magnitude of the self-test voltage, for example, when the self-test voltage is lower than a threshold, the radar is in a speed measurement state, and when the self-test voltage is higher than the threshold, the radar is in the self-test state. When the radar is in a speed measurement state, the vehicle speed is calculated according to a formula, and if the radar is in a self-detection state, the speed value is not displayed. The speed measuring state is that a train passes through the radar, the self-checking state is that no train passes through, therefore under the state, there is no speed value, the radar outputs a fixed frequency signal, the fixed frequency signal is compared with the standard frequency, if the frequency is normal, the radar equipment is normal, if the frequency of the signal is out of order, the radar is faulty.
The relationship between train speed and pulse frequency is as follows:
35.1GHz radar: v (km/h) 0.0153846 XFd(Hz) (1)
37.5GHz radar: v (km/h) 0.0144 XFd(Hz) (2)
Wherein FdIs the pulse frequency and v is the train speed.
In the radar speed measurement state, if the train speed exceeds the limit, the vehicle speed exceeding alarm is carried out, and the fault position is prompted to be outdoor radar equipment. And when the voltage of the sending end exceeds a threshold value (which can be set), alarming for 'abnormal indoor radar power supply', and prompting that the fault position is output by an indoor power supply screen.
When the self-checking voltage exceeds a threshold value (can be set), an indoor self-checking voltage abnormity alarm is carried out, and the fault position is prompted to be output by an indoor self-checking voltage control loop and a power supply screen. When the radar pulse voltage exceeds a threshold value (can be set), an alarm of low pulse voltage output by the outdoor radar is given, and the power supply of the outdoor radar equipment is prompted to the fault position.
In the radar self-checking state, when the radar frequency exceeds a self-checking frequency limit value (which can be set), alarming for 'abnormal radar output pulse frequency', and prompting that the fault position is outdoor radar equipment;
the utility model discloses the collection of well send end electric current adopts cross-core current transformer, with equipment under test safety isolation. Fuse fuses are respectively added among the high and low ends of the detection input of the sending end voltage, the self-detection voltage and the pulse voltage, so that short circuit among the high and low terminals of the input is prevented. PTC (restorable fuse) elements are connected in the voltage division loop in series and play a role when the loop current at the input end exceeds the standard.
The current-limiting resistor (high resistance) adopts 1 megaohm and 2W oxidized metal film resistor, after high voltage input is subjected to high resistance voltage division sampling, a weak voltage signal enters a post-stage processing circuit, and measures such as a TVS (transient voltage suppressor), photoelectric isolation and the like are arranged in the post-stage processing circuit, so that the current-limiting resistor (high resistance) is prevented from being connected in a post-stage measuring circuit in series due to high voltage impact, and the high voltage resistance is improved.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: the invention can be modified or equivalent substituted for some technical features; without departing from the spirit of the present invention, it should be understood that the scope of the claims is intended to cover all such modifications and variations.
Claims (4)
1. The utility model provides a hump radar equipment on-line monitoring system which characterized in that: the monitoring system comprises a processor, a current detection circuit and a voltage detection circuit;
the voltage detection circuit is provided with a first fuse, a second fuse, a first resistor, a second resistor, a first TVS (transient voltage suppressor) tube, a common mode inductor, a first operational amplifier, a second operational amplifier, a photoelectric isolator, a third operational amplifier and a fourth operational amplifier;
one end of the first fuse is used for external negative input, the other end of the first fuse is connected with one end of a first resistor, one end of the first resistor is connected with the first end of a first TVS tube, the second end of the first TVS tube is connected with one end of a second resistor, the other end of the second resistor is connected with one end of a second fuse, and the other end of the second fuse is used for external positive input;
the first end and the second end of the first TVS tube are respectively connected with a pin 1 and a pin 2 of the common mode inductor; a pin 3 of the common mode inductor is connected with a positive input end of a first operational amplifier, and a negative input end of the first operational amplifier is connected with an output end of the first operational amplifier; the pin 4 of the common mode inductor is connected with the negative input end of a second operational amplifier, the positive input end of the second operational amplifier is connected with the output end of a first operational amplifier, the output end of the second operational amplifier is connected with the first input of a photoelectric isolator, and the second input of the photoelectric isolator is used for being connected with a power supply; the pin 4 of the common mode inductor and the output end of the first operational amplifier are also respectively connected with the first output end and the second output end of the photoelectric isolator;
a third output end and a fourth output end of the photoelectric isolator are respectively connected with a negative input end and a positive input end of a third operational amplifier; the output end of the third operational amplifier is connected with the positive input end of a fourth operational amplifier, and the positive input end and the negative input end of the fourth operational amplifier are respectively connected with the output end of the fourth operational amplifier; and the output end of the fourth operational amplifier is used as the output end of the voltage detection circuit.
2. The on-line monitoring system for hump radar equipment according to claim 1, wherein said voltage detection circuit comprises: the voltage detection circuit comprises a first voltage detection circuit used for detecting radar self-detection voltage and a second voltage detection circuit used for detecting radar pulse voltage.
3. The on-line monitoring system for hump radar equipment according to claim 2, characterized in that: the monitoring system further comprises a third voltage detection circuit for detecting the voltage of the sending end of the radar equipment, wherein a third fuse, a fourth fuse, a third resistor, a fourth resistor, a second TVS (transient voltage suppressor) tube, an electromagnetic isolator, a fifth operational amplifier and a sixth operational amplifier are arranged in the third voltage detection circuit;
one end of the third fuse is used for being connected with external negative input, the other end of the third fuse is connected with one end of a third resistor, the other end of the third resistor is connected with the first end of a second TVS (transient voltage suppressor) tube, the second end of the second TVS tube is connected with one end of a fourth resistor, the other end of the fourth resistor is connected with one end of a fourth fuse, and the other end of the fourth fuse is used for being connected with external positive input;
the first end and the second end of the second TVS tube are respectively connected with the first pin and the second pin of the electromagnetic isolator; a third pin and a fourth pin of the electromagnetic isolator are respectively connected with a negative input end and a positive input end of a fifth operational amplifier; the output end of the fifth operational amplifier is connected with the negative input end of the sixth operational amplifier, the positive input end of the sixth operational amplifier is used for being connected with a power supply, and the output end of the sixth operational amplifier is used as the output end of the third voltage detection circuit.
4. The on-line monitoring system for hump radar equipment according to claim 1, characterized in that: the current detection circuit is internally provided with a current sensor, and the output end of the current sensor is connected with the output end of the current detection circuit through a third TVS tube, a seventh operational amplifier and an eighth operational amplifier; the output end of the current detection circuit is connected with the processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920923797.0U CN210376665U (en) | 2019-06-19 | 2019-06-19 | Online monitoring system for hump radar equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920923797.0U CN210376665U (en) | 2019-06-19 | 2019-06-19 | Online monitoring system for hump radar equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210376665U true CN210376665U (en) | 2020-04-21 |
Family
ID=70265667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920923797.0U Withdrawn - After Issue CN210376665U (en) | 2019-06-19 | 2019-06-19 | Online monitoring system for hump radar equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210376665U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110146863A (en) * | 2019-06-19 | 2019-08-20 | 河南辉煌科技股份有限公司 | A kind of hump radar equipment on-line monitoring system and method |
-
2019
- 2019-06-19 CN CN201920923797.0U patent/CN210376665U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110146863A (en) * | 2019-06-19 | 2019-08-20 | 河南辉煌科技股份有限公司 | A kind of hump radar equipment on-line monitoring system and method |
| CN110146863B (en) * | 2019-06-19 | 2024-02-20 | 河南辉煌科技股份有限公司 | Hump radar equipment online monitoring system and hump radar equipment online monitoring method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108072806B (en) | Track circuit fault diagnosis system and method | |
| CN202533545U (en) | Power transmission network fault detection system based on internet of things technology | |
| CN102590676B (en) | Device and method for detecting fault of direct current looped network of direct current power supply system | |
| CN101666851A (en) | Insulation, voltage, grounding test and grounding finding device and use method thereof | |
| CN204177907U (en) | Distribution Network Frame ceases to be busy running status record ripple and fault diagnosis system | |
| CN106597181A (en) | Operation monitoring system and method of high-voltage power transformer | |
| CN105116270A (en) | Mutual inductor fault detection method for merging unit and protection control device | |
| CN202735448U (en) | Multipoint grounding monitoring device | |
| CN210376665U (en) | Online monitoring system for hump radar equipment | |
| CN210128995U (en) | Charging voltage acquisition circuit, charging fault diagnosis circuit and charging device | |
| CN110146863B (en) | Hump radar equipment online monitoring system and hump radar equipment online monitoring method | |
| CN210376540U (en) | Online monitoring system of hump length measuring equipment | |
| CN204256059U (en) | A kind of 10kV shunt reactor switching service test system | |
| CN115656719B (en) | High-voltage cable sheath defect online diagnosis method based on sheath current transaction | |
| CN110920670A (en) | Outdoor monitoring and diagnosing system for track circuit | |
| CN110780224A (en) | Ground fault detection circuit and device | |
| CN114113862A (en) | Transformer short circuit impact monitoring method and monitoring device | |
| CN210665988U (en) | Distributed wave recording device for electric power grounding system | |
| CN106370947A (en) | Electric automobile fault on-line monitoring device | |
| CN207588441U (en) | The judgment means of overvoltage in a kind of power grid | |
| CN112816836A (en) | Fault detection system, partial discharge online monitoring device and method | |
| CN104678226A (en) | Zinc oxide arrester remote monitoring diagnosis system based on virtual instrument technique | |
| CN218412851U (en) | Direct current feeder line insulation aging fault troubleshooting device, equipment and system | |
| CN110542877A (en) | current analysis and diagnosis device for CVT secondary voltage testing device | |
| CN112904265B (en) | Second winding open circuit detection circuit of zero sequence current transformer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20200421 Effective date of abandoning: 20240220 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20200421 Effective date of abandoning: 20240220 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |