CN214503871U - Electricity testing device - Google Patents
Electricity testing device Download PDFInfo
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- CN214503871U CN214503871U CN202120027160.0U CN202120027160U CN214503871U CN 214503871 U CN214503871 U CN 214503871U CN 202120027160 U CN202120027160 U CN 202120027160U CN 214503871 U CN214503871 U CN 214503871U
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Abstract
The utility model discloses an electricity testing device is through setting up the sampling sensor for sampling sensor and high-voltage charged body direct contact, output signal and sampling signal keep apart completely, have avoided the condition that direct acquisition voltage takes place the electrical accident, and in addition, when the contact net carries out safe insulation voltage test, can not install the sampling sensor additional on because the contact net and produce any influence, thereby ensured subway equipment's safe operation. Set up a plurality of signal control ends through the controller, can detect the contact net of the same station way in subway maintenance storehouse or the supply voltage of multiple differences of contact rail simultaneously, reduce the complexity of whole circuit, reduce and test the electric cost.
Description
Technical Field
The embodiment of the utility model provides a relate to track traffic safety monitoring technical field, especially relate to an electricity testing device.
Background
In recent years, with the rapid development of railways, a large number of new technologies and new equipment are widely used, and are put into each operation line in sequence, so that the electricity testing is an indispensable important working program in equipment maintenance management in order to ensure the continuous, stable and safe power supply and ensure the safety and reliability of people and equipment.
At present, contact networks or contact rails of the same station track of a subway overhaul garage have different power supply voltages. And current electroscope device can only detect a supply voltage, if will detect different supply voltages, need connect a plurality of electroscopes on the contact net, like this, can cause the line connection complicacy, tests the electric cost increase.
SUMMERY OF THE UTILITY MODEL
The utility model provides an electricity testing device to realize detecting different supply voltage simultaneously, reduce the complexity of whole circuit, reduce and test the electric cost.
In order to achieve the above object, the utility model provides an electricity testing device, include:
the sampling sensor comprises a signal sampling end and a signal output end, and the signal sampling end is electrically connected with a contact network;
one end of the signal processor is electrically connected with the signal output end of the sampling sensor;
the controller comprises a signal receiving end and a plurality of signal control ends, the other end of the signal processor is electrically connected with the signal receiving end of the controller, each signal control end is connected with the control end of a relay, and each signal control end controls the working state of the corresponding relay according to the signals received by the signal receiving end.
Optionally, the sampling sensor is a hall voltage sensor.
Optionally, the signal sampling end of the hall voltage sensor comprises a first primary contact end and a second primary contact end, the first primary contact end is electrically connected with a positive electrode of the overhead line system, and the second primary contact end is electrically connected with a negative electrode of the overhead line system;
the signal processor comprises a first input end and a first output end, the first input end is electrically connected with the signal output end, and the first output end is electrically connected with a signal receiving end of the controller.
Optionally, the signal processor comprises: the direct current compensation unit, the direct current compensation unit includes second input and second output, the second input with the signal output part electricity is connected, is used for the signal of sampling sensor sampling carries out the voltage stack, the second output with the signal receiving end electricity of controller is connected.
Optionally, the signal processor further comprises: the input protection unit comprises a third input end and a third output end, the third input end is electrically connected with the second output end and used for protecting the short circuit of the circuit, and the third output end is electrically connected with the signal receiving end of the controller.
Optionally, the signal processor further comprises: and the voltage/current conversion unit comprises a voltage signal input end and a current signal output end, the voltage signal input end is electrically connected with the third output end, and the current signal output end is electrically connected with a signal receiving end of the controller.
Optionally, the signal processor further comprises: and the input end of the signal processing unit is electrically connected with the current signal output end, and the output end of the signal processing unit is electrically connected with the signal receiving end of the controller.
Optionally, the plurality of signal control terminals include: the relay comprises a first electrified signal control end, a second electrified signal control end and a non-electrified control end, wherein the first electrified signal control end controls the working state of a relay connected with the first electrified control end when the signal is in a first preset range; the second electric signal control end controls the working state of a relay connected with the second electric signal control end when the signal is in a second preset range; and the non-electric control end controls the working state of a relay connected with the non-electric control end when the signal is in a third preset range.
Optionally, the controller is a programmable controller.
Compared with the prior art, the utility model discloses following beneficial effect has: through setting up the sampling sensor for sampling sensor and high voltage charged body direct contact, output signal and sampling signal keep apart completely, have avoided the condition that direct acquisition voltage takes place the electric accident, and in addition, when the contact net carries out safe insulation voltage test, can not produce any influence because of installing the sampling sensor additional on the contact net, thereby ensured subway equipment's safe operation. Set up a plurality of signal control ends through the controller, can detect the contact net of the same station way in subway maintenance storehouse or the supply voltage of multiple differences of contact rail simultaneously, reduce the complexity of whole circuit, reduce and test the electric cost.
Drawings
Fig. 1 is a schematic block diagram of an electrical testing apparatus according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a sampling sensor in an electricity testing device according to an embodiment of the present invention;
fig. 3 is a schematic block diagram of an electrical testing apparatus according to an embodiment of the present invention;
fig. 4 is a schematic block diagram of an electricity testing device according to another embodiment of the present invention;
fig. 5 is an interface diagram of an electricity testing device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Fig. 1 is a schematic block diagram of an electricity testing device according to an embodiment of the present invention. As shown in fig. 1, the electroscope apparatus 100 includes: a sampling sensor 102, a signal processor 103, and a controller 104.
The sampling sensor 102 comprises a signal sampling end and a signal output end, and the signal sampling end is electrically connected with the overhead line system 101; one end of the signal processor 103 is electrically connected with the signal output end of the sampling sensor 102; the controller 104 includes a signal receiving end and a plurality of signal control ends, the other end of the signal processor 103 is electrically connected with the signal receiving end of the controller 104, each signal control end is connected with the control end of a relay, and each signal control end controls the working state of the corresponding relay according to the signal received by the signal receiving end.
That is, the signal of the overhead line system 101 is acquired by the sampling sensor 102, the signal processor 103 processes the signal acquired by the sampling sensor 102, and the controller 104 controls the operating state of the corresponding relay according to the signal.
It is understood that the sampling sensor 102 collects different signals, and the controller 104 controls the operating states of the different relays according to the different signals. For example, there are three signal control terminals of the controller 104, then, the sampling sensor 102 collects a first signal, the controller 104 controls the first relay 105 corresponding to the first signal to open and close according to the first signal, the sampling sensor 102 collects a second signal, the controller 104 controls the second relay 106 corresponding to the second signal to open and close according to the second signal, the sampling sensor 102 collects a third signal, and the controller 104 controls the third relay 107 corresponding to the third signal to open and close according to the third signal.
The first relay 105, the second relay 106, and the third relay 107 are all normally open relays or normally closed relays. In the embodiment of the present invention, the first relay 105, the second relay 106, and the third relay 107 are all normally open relays.
That is, when a first signal collected by the sensor 102 is sampled, the controller 104 controls the first relay 105 to close according to the first signal and outputs the first signal, when a second signal collected by the sensor 102 is sampled, the controller 104 controls the second relay 106 to close according to the second signal and outputs the second signal, and when a third signal collected by the sensor 102 is sampled, the controller 104 controls the third relay 107 to close according to the third signal and outputs the third signal. It can be understood that, in actual operation, a plurality of signal control terminals may be provided, each signal control terminal is connected to a control terminal of a relay, and each signal control terminal controls the working state of the corresponding relay according to the signal received by the signal receiving terminal. Therefore, through a plurality of signal control ends, the power supply signals of multiple differences of contact networks or contact rails of the same station track of the subway overhaul warehouse can be detected simultaneously, the complexity of the whole line is reduced, and the electricity testing cost is reduced.
Optionally, sampling sensor 102 is a hall voltage sensor.
Optionally, as shown in fig. 2, the signal sampling end of the hall voltage sensor includes a first primary contact end + HT and a second primary contact end-HT, the first primary contact end + HT is electrically connected to the positive electrode of the overhead line system, and the second primary contact end-HT is electrically connected to the negative electrode of the overhead line system;
the signal processor 103 includes a first input terminal electrically connected to the signal output terminal and a first output terminal electrically connected to the signal receiving terminal of the controller 104.
It will be appreciated that the sampling sensor 102 is a hall voltage sensor, and includes a first primary contact terminal + HT, a second primary contact terminal-HT, and a signal output terminal M. The +15V terminal and the-15V terminal are power input terminals of the sampling sensor 102. That is, the sampling sensor 102 is used to acquire a plurality of different power supply voltage signals of contact networks or contact rails of the same track of the subway overhaul library. The signal processor 103 processes the power supply voltage signal and transmits the processed power supply voltage signal to the controller 104, and the controller 104 controls the relay corresponding to the power supply voltage signal to be closed according to the power supply voltage signal and outputs the power supply voltage signal. The signal processor 103 is used for extracting and screening the effective signals.
Alternatively, as shown in fig. 3, the plurality of signal control terminals include: the first electric signal control end controls the working state of a relay connected with the first electric signal control end when the signal is in a first preset range; the second electric signal control end controls the working state of a relay connected with the second electric signal control end when the signal is in a second preset range; and when the signal is in a third preset range, the non-electric control end controls the working state of a relay connected with the non-electric control end.
The first predetermined range may be 500-900V, the second predetermined range may be 1000-1800V, and the third predetermined range may be 0-500V. That is to say, when the voltage signal that sampling sensor 102 gathered is in first preset within range, first electric signal control end has the closure of signal control first relay, outputs first electric signal, when the voltage signal that sampling sensor 102 gathered is in second preset within range, second electric signal control end has the closure of signal control second relay, outputs second electric signal, when the voltage signal that sampling sensor 102 gathered is in the third preset within range, no electric signal is exported in the closure of no electric control end control third relay. Therefore, through setting three signal preset ranges and three signal control ends, three different power supply signals of a contact net or a contact rail of the same station of a subway overhaul warehouse can be detected simultaneously, the complexity of the whole line is reduced, and the electricity testing cost is reduced. It should be noted that, in the actual operation process, different preset ranges can be set according to the types of the voltage signals of the contact networks or the contact rails of the same station of the subway overhaul library, so that the types of the voltage signals of the contact networks or the contact rails of the same station of the subway overhaul library can be detected at the same time.
Alternatively, as shown in fig. 3, the signal processor 103 includes: and the dc compensation unit 1031, the dc compensation unit 1031 includes a second input end and a second output end, the second input end is electrically connected to the signal output end, and the second output end is electrically connected to the signal receiving end of the controller, and is configured to perform voltage superposition on the signal sampled by the sampling sensor 102. Therefore, the direct-current voltage signal collected by the sampling sensor 102 is superposed with a direct-current voltage to raise the potential, so that the signal collection is facilitated.
Optionally, as shown in fig. 3, the signal processor 103 further includes: and the input protection unit 1032 comprises a third input end and a third output end, the third input end is electrically connected with the second output end, and the third output end is electrically connected with the signal receiving end of the controller 104 and used for protecting the short circuit of the circuit. The input protection unit 1032 may be a bidirectional diode, and the signal short-circuit protection is performed for a signal greater than 0.7V.
Optionally, as shown in fig. 3, the signal processor 103 further includes: and the voltage/current conversion unit 1033, wherein the voltage/current conversion unit 1033 includes a voltage signal input terminal and a current signal output terminal, the voltage signal input terminal is electrically connected to the third output terminal, and the current signal output terminal is electrically connected to the signal receiving terminal of the controller 104. For converting the voltage signal collected by the sampling sensor 102 into a current signal.
Optionally, as shown in fig. 3, the signal processor 103 further includes: an input end of the signal processing unit 1034 is electrically connected to the current signal output end, and an output end of the signal processing unit 1034 is electrically connected to a signal receiving end of the controller 104.
The signal processing unit 1034 is configured to analyze and process the voltage signal collected by the sampling sensor 102, and retain an effective signal.
It is noted that the signal processor 1034 may be an MC14433 analog-to-digital converter. All CMOS analog circuits and digital circuits of the double integral analog-to-digital converter are integrated. The method has the characteristics of few external elements, high input impedance, low power consumption, wide power supply voltage range, high precision and the like, and has the functions of automatic zero calibration and automatic polarity conversion.
Optionally, the controller 104 is a programmable controller. Model number may be FX3U-64MR model number controller.
As shown in fig. 4, the signal processor 103 further includes a self-check function, wherein when the self-check function is started, the functions of the modules of the electricity testing device 100 can be automatically detected, if all are normal, when the self-check function is pressed, the live indicator lamp flashes, the latching relay jumps, and the buzzer sounds bright. The signal processor 103 further comprises self-setting and detection, wherein the self-setting means that the limits of the first preset range, the second preset range and the third preset range can be set by self. Detection means that only the positive half cycle of the sampled signal is selected. It is to be understood that these modules are all commonly provided modules in the signal processor 103.
Fig. 5 is an interface diagram of an electricity testing device according to an embodiment of the present invention. As shown in fig. 5, the electroscope apparatus 100 includes 24 terminals, of which 13 to 15 terminals are connected to three output terminals of the sampling sensor 102. The terminals 22 to 24 are connected with a power supply to supply power for the electricity testing device. The terminals 10 to 12 are the dead output relay, wherein 11 is the control terminal of the dead output relay, and in practical use, only two terminals 10 and 11 can be connected, and the dead output relay is closed when the sampling sensor 102 collects a dead signal. Wherein, the electroless is the electroless of power supply contact net. 7 to 9 wiring ends are power-off output relay, and wherein 8 are power-off output relay's control end, during the in-service use, can only connect 7 and 8 two wiring ends, and power-off output relay is closed when testing electric device 100 loses the electricity to report to the police, loses the electricity for testing electric device itself and loses the electricity. The terminal is 750V output relay for 4 to 6, and wherein 5 is 750V output relay's control end, during the in service use, can only connect 5 and 6 two terminals, and 750V output relay closes when testing electric device 100 and gathering 750V and have the signal of telecommunication. 1 to 3 wiring terminals are the electric measuring terminal for 750V debugging, and the electric measuring terminal is used for 1500V debugging to three wiring terminals in the lower left corner, and the lower right corner is self-checking bee calling organ, when pressing the self-checking switch, if each module in the electric installation 100 of testing is intact, self-checking bee calling organ begins buzzing. 16 to 18 terminals connected with an external indicator light, and is not generally used. Terminals 19 to 21 are 1500V relays, wherein 20 is a control terminal of the 1500V relay, only terminals 19 and 20 can be connected in practical use, and the 1500V relay is closed when 1500V voltage is collected by the sampling sensor 102. The pilot lamp end, when 750V relay closure output, 750V high voltage live pilot lamp is bright, when 1500V relay closure output, 1500V high voltage live pilot lamp is bright, when no electric relay closure output, high pressure electroless pilot lamp is bright, when checking that electric device 100 inserts the power, work power supply pilot lamp is bright.
To sum up, according to the utility model discloses test electric installation that provides is through setting up the sampling sensor for sampling sensor and high-voltage electric body direct contact, output signal and sampling signal are kept apart completely, have avoided the condition that direct acquisition voltage takes place the electric accident, and in addition, the contact net carries out when safe insulation voltage is experimental, can not install the sampling sensor additional on because the contact net and produce any influence, thereby ensured subway equipment's safe operation. Set up a plurality of signal control ends through the controller, can detect the contact net of the same station way in subway maintenance storehouse or the supply voltage of multiple differences of contact rail simultaneously, reduce the complexity of whole circuit, reduce and test the electric cost.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (9)
1. An electroscopic device, comprising:
the sampling sensor comprises a signal sampling end and a signal output end, and the signal sampling end is electrically connected with a contact network;
one end of the signal processor is electrically connected with the signal output end of the sampling sensor;
the controller comprises a signal receiving end and a plurality of signal control ends, the other end of the signal processor is electrically connected with the signal receiving end of the controller, each signal control end is connected with the control end of a relay, and each signal control end controls the working state of the corresponding relay according to the signals received by the signal receiving end.
2. The electroscope of claim 1, wherein the sampling sensor is a hall voltage sensor.
3. The electricity testing device according to claim 2, wherein the signal sampling end of the hall voltage sensor comprises a first primary contact end and a second primary contact end, the first primary contact end is electrically connected with a positive electrode of the overhead line system, and the second primary contact end is electrically connected with a negative electrode of the overhead line system;
the signal processor comprises a first input end and a first output end, the first input end is electrically connected with the signal output end, and the first output end is electrically connected with a signal receiving end of the controller.
4. The electroscope apparatus of claim 3, wherein the signal processor comprises: the direct current compensation unit, the direct current compensation unit includes second input and second output, the second input with signal output electricity is connected, is used for the signal of sampling sensor sampling carries out the voltage stack, the second output with the signal receiving terminal electricity of controller is connected.
5. The electroscope apparatus of claim 4, wherein the signal processor further comprises: the input protection unit comprises a third input end and a third output end, the third input end is electrically connected with the second output end and used for protecting a circuit short circuit, and the third output end is electrically connected with a signal receiving end of the controller.
6. The electroscope apparatus of claim 5, wherein the signal processor further comprises: and the voltage/current conversion unit comprises a voltage signal input end and a current signal output end, the voltage signal input end is electrically connected with the third output end, and the current signal output end is electrically connected with a signal receiving end of the controller.
7. The electroscope of claim 6, wherein the signal processor further comprises: and the input end of the signal processing unit is electrically connected with the current signal output end, and the output end of the signal processing unit is electrically connected with the signal receiving end of the controller.
8. The electroscope of claim 1, wherein the plurality of signal control terminals comprises: the relay comprises a first electrified signal control end, a second electrified signal control end and a non-electrified control end, wherein the first electrified signal control end controls the working state of a relay connected with the first electrified control end when the signal is in a first preset range; the second electric signal control end controls the working state of a relay connected with the second electric signal control end when the signal is in a second preset range; and the non-electric control end controls the working state of a relay connected with the non-electric control end when the signal is in a third preset range.
9. The electroscopic device of claim 1, wherein the controller is a programmable controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120027160.0U CN214503871U (en) | 2021-01-06 | 2021-01-06 | Electricity testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120027160.0U CN214503871U (en) | 2021-01-06 | 2021-01-06 | Electricity testing device |
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| Publication Number | Publication Date |
|---|---|
| CN214503871U true CN214503871U (en) | 2021-10-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120027160.0U Active CN214503871U (en) | 2021-01-06 | 2021-01-06 | Electricity testing device |
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|---|---|
| CN (1) | CN214503871U (en) |
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2021
- 2021-01-06 CN CN202120027160.0U patent/CN214503871U/en active Active
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