CN110261738A - A kind of substation cable core is to measuring instrument - Google Patents
A kind of substation cable core is to measuring instrument Download PDFInfo
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- CN110261738A CN110261738A CN201910650946.5A CN201910650946A CN110261738A CN 110261738 A CN110261738 A CN 110261738A CN 201910650946 A CN201910650946 A CN 201910650946A CN 110261738 A CN110261738 A CN 110261738A
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- 238000005259 measurement Methods 0.000 claims abstract description 83
- 238000012545 processing Methods 0.000 claims abstract description 43
- 239000003990 capacitor Substances 0.000 claims description 106
- 230000008878 coupling Effects 0.000 claims description 30
- 238000010168 coupling process Methods 0.000 claims description 30
- 238000005859 coupling reaction Methods 0.000 claims description 30
- 239000003381 stabilizer Substances 0.000 claims description 27
- 230000005611 electricity Effects 0.000 claims description 12
- 230000000087 stabilizing effect Effects 0.000 claims description 12
- 230000004069 differentiation Effects 0.000 claims description 11
- 238000012360 testing method Methods 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000007257 malfunction Effects 0.000 abstract description 2
- 230000006870 function Effects 0.000 description 4
- 230000007812 deficiency Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 241000935974 Paralichthys dentatus Species 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/083—Locating faults in cables, transmission lines, or networks according to type of conductors in cables, e.g. underground
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Abstract
The invention discloses a kind of substation cable cores to measuring instrument, including central processing module, voltage measurement module, on-off measurement module, and voltage measurement module is used to carry out voltage measurement to secondary circuit, and voltage measurement module is electrically connected with central processing module；On-off measurement module has host mode and slave mode, and host mode measures cable core band point situation, and for cooperating host to complete checking work to cable core, on-off measurement module is electrically connected slave mode with central processing module.The beneficial effects of the present invention are: 1, have host mode and the two different operating modes of slave mode, cable is verified according to different situations；2, it is horizontal to improve safety in production, successfully solves when carrying out secondary circuit on off test in running substation due to accidentally touching energized circuit, and leads to the serious consequences such as electrical component malfunction, power ground.
Description
Technical field
The present invention relates to supervisory control of substation fields, more particularly, to a kind of substation cable core to measuring instrument.
Background technique
Currently, secondary circuit is made of a large amount of, different model cable, conducting wire in electric system conventional substation.
As power grid develops rapidly, user power utilization require it is higher and higher, therefore in the operation substation being related to enlarging, technological transformation project by
It is cumulative more, and Substation secondary circuit cable core is checked, outputs the secondary circuits on-off such as node state confirmation to protective device
Work is measured, is most important, indispensable link, wherein multimeter is to lead in current work about electric power to secondary circuit
The disconnected most common managing security tools and instruments of measurement.
Secondary circuit on-off measurement working forms are broadly divided into two kinds: the first, the measurement of short distance circuit.Using multimeter
On-off shelves, red test pencil is to circuit head end, and black meter pen is to circuit end, if buzzer rings, circuit conducting；Second, it is long away from
It is measured from circuit.Main Work tool is one piece of multimeter, a conducting wire, and circuit one end is shorted over the ground, and other end passes through ten thousand
It is grounded with table buzzing shelves (i.e. on-off shelves), if on-off shelves are connected, is beeped, prompted the conducting of this circuit, be same root
Cable core.In the above work all there is very big security risk in Work tool and working forms used:
(1) if circuit both ends band opposed polarity voltage, multimeter on-off shelves short circuit will lead to protective device outlet tripping；
(2) circuit one end is shorted over the ground, there is the great risk for being directly grounded energized circuit；(3) circuit one end is passed through into general-purpose
Table on-off shelves are shorted over the ground, carry out voltage measurement, since secondary circuit cable is numerous, staff to cable core first before work
It is too fast to be easy to appear operation, leads to measurement inaccuracy or careless omission, and mistake thinks by nuclear power cable core to be no pressure, eventually leads to straight
Stream ground connection；(4) commonly using multimeter is fluke type, and electric measurement shelves need to be switched with on-off shelves by manual knob, if logical
After disconnected measurement, on-off shelves are not exited, measure the voltage of other cable loops again, then there is the wind for being grounded energized circuit
Danger；(5) staff carry out a large amount of cables core tear open, connect, checking work, be easy fatigue and general idea, and accidentally touch energized circuit.
In conclusion being primarily present following problems:
1, production risk is high, and there are security risks for operating mode, requires height to staff's level of skill, and without corresponding
Warning function, secondary circuit on off test risk is high；
2, working efficiency reduces, and common multimeter on-off mark structure is complicated, needs correct between voltage gear and on-off shelves
Switching, use is very inconvenient, and universality is low, and working efficiency is low.
Summary of the invention
The present invention overcomes above-mentioned existing technical deficiency, a kind of substation cable core is provided to measuring instrument.The present invention
With host mode and the two different operating modes of slave mode, cable is verified according to different situations.
In order to solve the above technical problems, technical scheme is as follows:
A kind of substation cable core measures mould to measuring instrument, including central processing module, voltage measurement module, on-off
Block, wherein
The voltage measurement module is used to carry out voltage measurement, voltage measurement module and central processing mould to secondary circuit
Block electrical connection；
The on-off measurement module has host mode and slave mode, and the host mode measures cable core band point
Situation, the slave mode is for cooperating host to complete checking work, on-off measurement module and central processing mould to cable core
Block electrical connection.
The course of work of the invention:
Host mode:
By voltage acquisition module, measures secondary circuit and charge situation, central processing module is sentenced by voltage acquisition module
It is disconnected whether to have voltage type.If secondary circuit has voltage, close synchronously on-off measurement module；If secondary circuit no-voltage, starting
On-off measures function, carries out on-off measurement.
Slave mode:
The work of on-off measurement module cooperation opposite side host.When operating mode is selected as slave, if voltage acquisition module
It is measured as no pressure, is safe condition, is prepared to enter into core work next time；If voltage acquisition module measurement has voltage, issue
Warning information.
In a preferred solution, the voltage measurement module includes discrimination module and acquisition module, wherein
The discrimination module is for the positive/negative differentiation to voltage to alternating current and direct current, the output of discrimination module
Grade is electrically connected with the input stage of central processing module；
The output stage of the acquisition module is electrically connected with the input stage of central processing module；
The discrimination module and acquisition module uses identical input stage.
In a preferred solution, the central processing module includes STC8A8K64S4A12 chip；Described is logical
Disconnected measurement module includes host on-off measurement submodule and slave on-off measurement submodule, and the host on-off measures submodule
For host mode, the output stage of host on-off measurement submodule is electrically connected with the input stage of central processing module；It is described from
Machine on-off measures submodule and is used for slave mode, and slave on-off measures the output stage of submodule and the input stage of central processing module
Electrical connection；The input stage of the host on-off measurement submodule is identical as the slave on-off measurement input stage of submodule.
In this preferred embodiment, STC8A8K64S4A12 type controls chip, has high speed, highly reliable, low-power consumption, superpower anti-does
The characteristic disturbed.
In a preferred solution, the described slave on-off measurement submodule include the first relay, the 9th diode,
6th NPN triode, the 22nd resistance, wherein
The input stage of the slave on-off measurement submodule includes first input end and the second input terminal, first input end
For acquiring high potential, the second input terminal is for acquiring low potential；
The first input end of the slave on-off measurement submodule is electrically connected with one end of the switch-side of the first relay；
Second input terminal of slave on-off measurement submodule and the other end of the switch-side of the first relay is electrically connected
It connects；
One termination power of the control side of first relay；
The other end of the control side of first relay is electrically connected with the anode of the 9th diode；
One end of the control side of first relay is electrically connected with the cathode of the 9th diode；
The other end of the control side of first relay is electrically connected with the collector of the 6th NPN triode；
The emitter of 6th NPN triode is grounded；
The ground level of 6th NPN triode is electrically connected with one end of the 22nd resistance；
The other end of 22nd resistance is electrically connected with No. 23 pins of STC8A8K64S4A12 chip.
In a preferred solution, host on-off measurement submodule includes the first bridge rectifier, second
Relay, third diode, third NPN triode, bi-directional voltage stabilizing pipe, twelfth resistor, the 15th resistance, the 22nd electricity
Resistance, the 19th resistance, wherein
The first input end of the host on-off measurement submodule is electrically connected with one end of the switch-side of the second relay；
The other end of the switch-side of second relay is electrically connected with one end of the 15th resistance；
The other end of 15th resistance is electrically connected with one end of bi-directional voltage stabilizing pipe；
The other end of 15th resistance is electrically connected with No. 1 pin of STC8A8K64S4A12 chip；
Second input terminal of the host on-off measurement submodule and the first input end electricity of the first bridge rectifier
Connection；
First output end of first bridge rectifier is electrically connected with one end of twelfth resistor；
The other end of the twelfth resistor is electrically connected with No. 2 pins of STC8A8K64S4A12 chip；
One end of the twelfth resistor is electrically connected with one end of bi-directional voltage stabilizing pipe；
One end of 15th resistance is electrically connected with the other end of bi-directional voltage stabilizing pipe；
One termination power of the control side of second relay；
The other end of the control side of second relay is electrically connected with the anode of third diode；
One end of the control side of second relay is electrically connected with the cathode of third diode；
The other end of the control side of second relay is electrically connected with the collector of third NPN triode；
The emitter of the third NPN triode is grounded；
The base stage of the third NPN triode is electrically connected with one end of the 19th resistance；
The other end of 19th resistance is electrically connected with No. 24 pins of STC8A8K64S4A12 chip.
In a preferred solution, the voltage measurement module includes differentiating submodule and acquisition submodule, wherein
Described differentiates that submodule for the positive/negative differentiation to voltage to alternating current and direct current, differentiates submodule
Output stage is electrically connected with the input stage of central processing module；
The output stage of the acquisition submodule is electrically connected with the input stage of central processing module；
The differentiation submodule and acquisition submodule uses identical input stage.
In a preferred solution, the acquisition submodule includes the second bridge rectifier, the 8th resistance, the 9th
Resistance, eleventh resistor, third capacitor, the tenth capacitor and the 11st capacitor, wherein
The first input end of second bridge rectifier is defined as the first input end of acquisition submodule；
Second input terminal of second bridge rectifier is defined as the second input terminal of acquisition submodule；
First output end of second bridge rectifier is electrically connected with one end of the 11st capacitor；
The second output terminal of second bridge rectifier is electrically connected with the other end of the 11st capacitor；
First output end of second bridge rectifier is electrically connected with one end of eleventh resistor；
The other end of the eleventh resistor is electrically connected with one end of the 8th resistance；
The other end of 8th resistance is electrically connected with one end of the 9th resistance；
The other end of 9th resistance is electrically connected with the other end of the 11st capacitor；
The other end of 9th resistance is grounded；
The other end of 8th resistance is electrically connected with No. 3 pins of STC8A8K64S4A12 chip；
The other end of 8th resistance is electrically connected with one end of third capacitor；
The other end of 9th resistance is electrically connected with the other end of third capacitor；
The other end of 8th resistance is electrically connected with one end of the tenth capacitor；
The other end of 9th resistance is electrically connected with the other end of the tenth capacitor.
In a preferred solution, the differentiation submodule includes first resistor, second resistance, 3rd resistor,
Four resistance, the 5th resistance, the 6th resistance, first diode, the second diode, the first voltage-stabiliser tube, the second voltage-stabiliser tube, the first electricity
Appearance, the second capacitor, the first optic coupling element, the second optic coupling element, wherein
The input stage of the differentiation submodule includes first input end and the second input terminal, and first input end is for acquiring
High potential, the second input terminal is for acquiring low potential；
One end of 5th resistance is defined as the first input end of discrimination module, the other end and third of the 5th resistance
One end of resistance is electrically connected；
One end of 6th resistance is defined as the second input terminal of discrimination module, the other end and the 4th of the 6th resistance
One end of resistance is electrically connected；
The other end of the 3rd resistor is electrically connected with the anode of the second diode；
The other end of the 3rd resistor is electrically connected with the anode of the first voltage-stabiliser tube；
The other end of the 3rd resistor is electrically connected with one end of first capacitor；
The cathode of second diode is electrically connected with the cathode of the second voltage-stabiliser tube；
The cathode of second diode is electrically connected with the other end of the second capacitor；
The cathode of second diode is electrically connected with one end of second resistance；
The other end of 4th resistance is electrically connected with the anode of first diode；
The other end of 4th resistance is electrically connected with the anode of the second voltage-stabiliser tube；
The other end of 4th resistance is electrically connected with one end of the second capacitor；
The cathode of the first diode is electrically connected with the cathode of the first voltage-stabiliser tube；
The cathode of the first diode is electrically connected with the other end of first capacitor；
The cathode of the first diode is electrically connected with one end of first resistor；
The other end of the first resistor is electrically connected with the first input end of the first optic coupling element；
The other end of the 3rd resistor is electrically connected with the second input terminal of the first optic coupling element；
The other end of the second resistance is electrically connected with the first input end of the second optic coupling element；
The other end of 4th resistance is electrically connected with the second input terminal of the second optic coupling element；
First output end of first optic coupling element is electrically connected with No. 21 pins of STC8A8K64S4A12 chip；
The second output terminal of first optic coupling element is grounded；
First output end of second optic coupling element is electrically connected with No. 20 pins of STC8A8K64S4A12 chip；
The second output terminal of second optic coupling element is grounded.
In a preferred solution, the substation cable core further includes sound and light alarm module to measuring instrument, institute
The sound and light alarm module stated is electrically connected with central processing module.
In a preferred solution, the sound and light alarm module includes NY9A001 chip, the second electrolytic capacitor,
Four diodes, the 6th diode, the 6th capacitor, buzzer, the second NPN triode, the 4th NPN triode, thirteenth resistor,
14 resistance, the 16th resistance, the 17th resistance, the 18th resistance, second light-emitting LED, third be light-emitting LED and loudspeaker, wherein
No. 7 pins of the NY9A001 chip are electrically connected with one end of the 6th capacitor；
The other end of 6th capacitor is grounded；
No. 7 pins of the NY9A001 chip are electrically connected with the cathode of the 4th diode；
The anode of 4th diode connects power supply；
No. 7 pins of the NY9A001 chip are electrically connected with the anode of the second electrolytic capacitor；
The cathode of second electrolytic capacitor is grounded；
No. 8 pins of the NY9A001 chip are electrically connected with one end of loudspeaker；
The other end of the loudspeaker is grounded；
No. 5 pins of the NY9A001 chip are electrically connected with the collector of the 4th NPN triode；
The emitter of 4th NPN triode is grounded；
The base stage of 4th NPN triode is electrically connected with one end of the 16th resistance；
The other end of 16th resistance is electrically connected with the emitter of the 4th NPN triode；
The base stage of 4th NPN triode is electrically connected with one end of the 14th resistance；
The other end of 14th resistance is electrically connected with No. 42 pins of STC8A8K64S4A12 chip；
One termination power of the thirteenth resistor；
The other end of the thirteenth resistor is electrically connected with the second light-emitting LED anode；
The light-emitting LED cathode of described second is electrically connected with No. 41 pins of STC8A8K64S4A12 chip；
The light-emitting LED anode of the third connects power supply；
The light-emitting LED cathode of the third is electrically connected with one end of the 17th resistance；
The other end of 17th resistance is electrically connected with the anode of the 6th diode；
The light-emitting LED anode of the third is electrically connected with the cathode of the 6th diode；
One termination power of the buzzer；
The other end of the buzzer is electrically connected with the anode of the 6th diode；
The anode of 6th diode is electrically connected with the collector of the second NPN triode；
The emitter of second NPN triode is grounded；
The base stage of second NPN triode is electrically connected with one end of the 18th resistance；
The other end of 18th resistance is electrically connected with No. 26 pins of STC8A8K64S4A12 chip.This preferred side
In case, if STC8A8K64S4A12 chip judges secondary circuit no-voltage, and when secondary circuit is in the conductive state,
STC8A8K64S4A12 chip starts third light-emitting LED (flash green) and buzzer；If STC8A8K64S4A12 chip judges
When secondary circuit has voltage, STC8A8K64S4A12 chip starting second is light-emitting LED (red glittering), and starts loudspeaker and issue language
Message breath, reminds staff to leave.
In a preferred solution, the central processing module further includes acknowledgement key, the 9th capacitor, inductance, first
Electrolytic capacitor, the 4th capacitor, the tenth resistance, the 5th capacitor and third voltage-stabiliser tube, wherein
No. 38 pins of the STC8A8K64S4A12 chip are electrically connected with one end of acknowledgement key；
The other end of the acknowledgement key is grounded；
No. 16 pins of the STC8A8K64S4A12 chip are grounded；
No. 16 pins of the STC8A8K64S4A12 chip are electrically connected with one end of the 9th capacitor；
The other end of 9th capacitor is electrically connected with No. 14 pins of STC8A8K64S4A12 chip；
No. 14 pins of the STC8A8K64S4A12 chip connect power supply；
No. 12 pins of the STC8A8K64S4A12 chip are electrically connected with one end of inductance；
Another termination power of the inductance；
No. 12 pins of the STC8A8K64S4A12 chip are electrically connected with the anode of the first electrolytic capacitor；
The minus earth of first electrolytic capacitor；
No. 12 pins of the STC8A8K64S4A12 chip are electrically connected with one end of the 4th capacitor；
The other end of 4th capacitor is electrically connected with the cathode of the first electrolytic capacitor；
No. 12 pins of the STC8A8K64S4A12 chip are electrically connected with one end of the tenth resistance；
The other end of tenth resistance is electrically connected with one end of the 5th capacitor；
The other end of 5th capacitor is electrically connected with the other end of the 4th capacitor；
No. 12 pins of the STC8A8K64S4A12 chip are electrically connected with No. 11 pins of STC8A8K64S4A12 chip
It connects；
No. 12 pins of the STC8A8K64S4A12 chip are electrically connected with the cathode of third voltage-stabiliser tube；
The plus earth of the third voltage-stabiliser tube.
In a preferred solution, the substation cable core further includes brightness sensing module and photograph to measuring instrument
Bright module, the brightness sensing module are electrically connected with central processing module；The lighting module and central processing module electricity
Connection.
In this preferred embodiment, when luminance sensor detects surrounding brightness deficiency, central processing module starting lighting module is mentioned
For illumination, staff is facilitated to construct in the environment of luminance shortage.
Compared with prior art, the beneficial effect of technical solution of the present invention is:
1, there are host mode and the two different operating modes of slave mode, core is carried out to cable according to different situations
It looks into；
2, it is horizontal to improve safety in production, successfully solve when carrying out secondary circuit on off test in running substation due to
Energized circuit is accidentally touched, and leads to the serious consequences such as electrical component malfunction, power ground；
3, working efficiency is improved, it is easy to operate by the integrated design scheme of voltage measurement and on off test, it improves
The operation of employee's labour is horizontal.
Detailed description of the invention
Fig. 1 is the structure chart of embodiment 1.
Fig. 2 is the central processing module circuit diagram of embodiment.
Fig. 3 is that the slave on-off of embodiment measures submodular circuits figure.
Fig. 4 is that the host on-off of embodiment measures submodular circuits figure.
Fig. 5 is the differentiation submodular circuits figure of embodiment.
Fig. 6 is the acquisition submodular circuits figure of embodiment.
Fig. 7 is the sound and light alarm module circuit diagram of embodiment.
Specific embodiment
The attached figures are only used for illustrative purposes and cannot be understood as limitating the patent；
In order to better illustrate this embodiment, the certain components of attached drawing have omission, zoom in or out, and do not represent actual product
Size；
To those skilled in the art, it is to be understood that certain known features and its explanation, which may be omitted, in attached drawing
's.
The following further describes the technical solution of the present invention with reference to the accompanying drawings and examples.
Embodiment 1
As shown in Figure 1, a kind of substation cable core is to measuring instrument, including it is central processing module, voltage measurement module, logical
Disconnected measurement module and sound and light alarm module, wherein
Voltage measurement module is used to carry out voltage measurement to secondary circuit, and voltage measurement module is electrically connected with central processing module
It connects；
On-off measurement module has host mode and slave mode, and host mode measures cable core band point situation, slave mould
For cooperating host to complete checking work to cable core, on-off measurement module is electrically connected formula with central processing module；
The output stage of central processing module is electrically connected with sound and light alarm module；
On-off measurement module includes host on-off measurement submodule and slave on-off measurement submodule, host on-off measurement
Module is used for host mode, and the output stage of host on-off measurement submodule is electrically connected with the input stage of central processing module；Slave
On-off measures submodule and is used for slave mode, and slave on-off measures the output stage of submodule and the input stage electricity of central processing module
Connection；The input stage that host on-off measures submodule is identical as the slave on-off measurement input stage of submodule；
Voltage measurement module includes differentiating submodule and acquisition submodule,
Differentiate that submodule for the positive/negative differentiation to voltage to alternating current and direct current, differentiates the output stage of submodule
It is electrically connected with the input stage of central processing module；
The output stage of acquisition submodule is electrically connected with the input stage of central processing module；
Differentiate that submodule and acquisition submodule use identical input stage.
Wherein, as shown in Fig. 2, central processing module includes STC8A8K64S4A12 chip, acknowledgement key, the 9th capacitor, electricity
Sense, the first electrolytic capacitor, the 4th capacitor, the tenth resistance, the 5th capacitor and third voltage-stabiliser tube, wherein
No. 38 pins of STC8A8K64S4A12 chip are electrically connected with one end of acknowledgement key；
The other end of acknowledgement key is grounded；
No. 16 pins of STC8A8K64S4A12 chip are grounded；
No. 16 pins of STC8A8K64S4A12 chip are electrically connected with one end of the 9th capacitor；
The other end of 9th capacitor is electrically connected with No. 14 pins of STC8A8K64S4A12 chip；
No. 14 pins of STC8A8K64S4A12 chip connect power supply；
No. 12 pins of STC8A8K64S4A12 chip are electrically connected with one end of inductance；
Another termination power of inductance；
No. 12 pins of STC8A8K64S4A12 chip are electrically connected with the anode of the first electrolytic capacitor；
The minus earth of first electrolytic capacitor；
No. 12 pins of STC8A8K64S4A12 chip are electrically connected with one end of the 4th capacitor；
The other end of 4th capacitor is electrically connected with the cathode of the first electrolytic capacitor；
No. 12 pins of STC8A8K64S4A12 chip are electrically connected with one end of the tenth resistance；
The other end of tenth resistance is electrically connected with one end of the 5th capacitor；
The other end of 5th capacitor is electrically connected with the other end of the 4th capacitor；
No. 12 pins of STC8A8K64S4A12 chip are electrically connected with No. 11 pins of STC8A8K64S4A12 chip；
No. 12 pins of STC8A8K64S4A12 chip are electrically connected with the cathode of third voltage-stabiliser tube；
The plus earth of third voltage-stabiliser tube.
Wherein, as shown in figure 3, slave on-off measurement submodule includes the first relay, the 9th diode, the 6th NPN tri-
Pole pipe, the 22nd resistance, wherein
The input stage of slave on-off measurement submodule includes first input end and the second input terminal, and first input end is for adopting
Collect high potential, the second input terminal is for acquiring low potential；
The first input end of slave on-off measurement submodule is electrically connected with one end of the switch-side of the first relay；
Second input terminal of slave on-off measurement submodule is electrically connected with the other end of the switch-side of the first relay；
One termination power of the control side of the first relay；
The other end of the control side of first relay is electrically connected with the anode of the 9th diode；
One end of the control side of first relay is electrically connected with the cathode of the 9th diode；
The other end of the control side of first relay is electrically connected with the collector of the 6th NPN triode；
The emitter of 6th NPN triode is grounded；
The ground level of 6th NPN triode is electrically connected with one end of the 22nd resistance；
The other end of 22nd resistance is electrically connected with No. 23 pins of STC8A8K64S4A12 chip.
Wherein, as shown in figure 4, host on-off measurement submodule includes the first bridge rectifier, the second relay, third
Diode, third NPN triode, bi-directional voltage stabilizing pipe, twelfth resistor, the 15th resistance, the 22nd resistance, the 19th electricity
Resistance, wherein
The first input end of host on-off measurement submodule is electrically connected with one end of the switch-side of the second relay；
The other end of the switch-side of second relay is electrically connected with one end of the 15th resistance；
The other end of 15th resistance is electrically connected with one end of bi-directional voltage stabilizing pipe；
The other end of 15th resistance is electrically connected with No. 1 pin of STC8A8K64S4A12 chip；
Second input terminal of host on-off measurement submodule is electrically connected with the first input end of the first bridge rectifier；
First output end of the first bridge rectifier is electrically connected with one end of twelfth resistor；
The other end of twelfth resistor is electrically connected with No. 2 pins of STC8A8K64S4A12 chip；
One end of twelfth resistor is electrically connected with one end of bi-directional voltage stabilizing pipe；
One end of 15th resistance is electrically connected with the other end of bi-directional voltage stabilizing pipe；
One termination power of the control side of the second relay；
The other end of the control side of second relay is electrically connected with the anode of third diode；
One end of the control side of second relay is electrically connected with the cathode of third diode；
The other end of the control side of second relay is electrically connected with the collector of third NPN triode；
The emitter of third NPN triode is grounded；
The base stage of third NPN triode is electrically connected with one end of the 19th resistance；
The other end of 19th resistance is electrically connected with No. 24 pins of STC8A8K64S4A12 chip.
Wherein, as shown in figure 5, differentiating that submodule includes first resistor, second resistance, 3rd resistor, the 4th resistance, the 5th
Resistance, the 6th resistance, first diode, the second diode, the first voltage-stabiliser tube, the second voltage-stabiliser tube, first capacitor, the second capacitor,
First optic coupling element, the second optic coupling element, wherein
The input stage for differentiating submodule includes first input end and the second input terminal, and first input end is for acquiring high electricity
Gesture, the second input terminal is for acquiring low potential；
One end of 5th resistance is defined as the first input end of discrimination module, the other end of the 5th resistance and 3rd resistor
One end electrical connection；
One end of 6th resistance is defined as the second input terminal of discrimination module, the other end of the 6th resistance and the 4th resistance
One end electrical connection；
The other end of 3rd resistor is electrically connected with the anode of the second diode；
The other end of 3rd resistor is electrically connected with the anode of the first voltage-stabiliser tube；
The other end of 3rd resistor is electrically connected with one end of first capacitor；
The cathode of second diode is electrically connected with the cathode of the second voltage-stabiliser tube；
The cathode of second diode is electrically connected with the other end of the second capacitor；
The cathode of second diode is electrically connected with one end of second resistance；
The other end of 4th resistance is electrically connected with the anode of first diode；
The other end of 4th resistance is electrically connected with the anode of the second voltage-stabiliser tube；
The other end of 4th resistance is electrically connected with one end of the second capacitor；
The cathode of first diode is electrically connected with the cathode of the first voltage-stabiliser tube；
The cathode of first diode is electrically connected with the other end of first capacitor；
The cathode of first diode is electrically connected with one end of first resistor；
The other end of first resistor is electrically connected with the first input end of the first optic coupling element；
The other end of 3rd resistor is electrically connected with the second input terminal of the first optic coupling element；
The other end of second resistance is electrically connected with the first input end of the second optic coupling element；
The other end of 4th resistance is electrically connected with the second input terminal of the second optic coupling element；
First output end of the first optic coupling element is electrically connected with No. 21 pins of STC8A8K64S4A12 chip；
The second output terminal of first optic coupling element is grounded；
First output end of the second optic coupling element is electrically connected with No. 20 pins of STC8A8K64S4A12 chip；
The second output terminal of second optic coupling element is grounded.
Wherein, as shown in fig. 6, acquisition submodule includes the second bridge rectifier, the 8th resistance, the 9th resistance, the tenth
One resistance, third capacitor, the tenth capacitor and the 11st capacitor, wherein
The first input end of second bridge rectifier is defined as the first input end of acquisition submodule；
Second input terminal of the second bridge rectifier is defined as the second input terminal of acquisition submodule；
First output end of the second bridge rectifier is electrically connected with one end of the 11st capacitor；
The second output terminal of second bridge rectifier is electrically connected with the other end of the 11st capacitor；
First output end of the second bridge rectifier is electrically connected with one end of eleventh resistor；
The other end of eleventh resistor is electrically connected with one end of the 8th resistance；
The other end of 8th resistance is electrically connected with one end of the 9th resistance；
The other end of 9th resistance is electrically connected with the other end of the 11st capacitor；
The other end of 9th resistance is grounded；
The other end of 8th resistance is electrically connected with No. 3 pins of STC8A8K64S4A12 chip；
The other end of 8th resistance is electrically connected with one end of third capacitor；
The other end of 9th resistance is electrically connected with the other end of third capacitor；
The other end of 8th resistance is electrically connected with one end of the tenth capacitor；
The other end of 9th resistance is electrically connected with the other end of the tenth capacitor.
Wherein, as shown in fig. 7, sound and light alarm module includes NY9A001 chip, the second electrolytic capacitor, the 4th diode,
Six diodes, the 6th capacitor, buzzer, the second NPN triode, the 4th NPN triode, thirteenth resistor, the 14th resistance,
16 resistance, the 17th resistance, the 18th resistance, second light-emitting LED, third be light-emitting LED and loudspeaker, wherein
No. 7 pins of NY9A001 chip are electrically connected with one end of the 6th capacitor；
The other end of 6th capacitor is grounded；
No. 7 pins of NY9A001 chip are electrically connected with the cathode of the 4th diode；
The anode of 4th diode connects power supply；
No. 7 pins of NY9A001 chip are electrically connected with the anode of the second electrolytic capacitor；
The cathode of second electrolytic capacitor is grounded；
No. 8 pins of NY9A001 chip are electrically connected with one end of loudspeaker；
The other end of loudspeaker is grounded；
No. 5 pins of NY9A001 chip are electrically connected with the collector of the 4th NPN triode；
The emitter of 4th NPN triode is grounded；
The base stage of 4th NPN triode is electrically connected with one end of the 16th resistance；
The other end of 16th resistance is electrically connected with the emitter of the 4th NPN triode；
The base stage of 4th NPN triode is electrically connected with one end of the 14th resistance；
The other end of 14th resistance is electrically connected with No. 42 pins of STC8A8K64S4A12 chip；
One termination power of thirteenth resistor；
The other end of thirteenth resistor is electrically connected with the second light-emitting LED anode；
Second light-emitting LED cathode is electrically connected with No. 41 pins of STC8A8K64S4A12 chip；
The light-emitting LED anode of third connects power supply；
The light-emitting LED cathode of third is electrically connected with one end of the 17th resistance；
The other end of 17th resistance is electrically connected with the anode of the 6th diode；
The light-emitting LED anode of third is electrically connected with the cathode of the 6th diode；
One termination power of buzzer；
The other end of buzzer is electrically connected with the anode of the 6th diode；
The anode of 6th diode is electrically connected with the collector of the second NPN triode；
The emitter of second NPN triode is grounded；
The base stage of second NPN triode is electrically connected with one end of the 18th resistance；
The other end of 18th resistance is electrically connected with No. 26 pins of STC8A8K64S4A12 chip.
The course of work of embodiment 1:
Host mode:
STC8A8K64S4A12 chip measures secondary circuit by voltage acquisition module and charges situation, passes through voltage acquisition mould
Block judges voltage type, if secondary circuit has voltage, starts sound and light alarm module, loudspeaker and red LCD prompt behaviour at once
Make personnel and accidentally touches energized circuit, and synchronous locking on-off measurement module；If secondary circuit no-voltage, start on-off measurement function
Can, if tested secondary circuit conducting, by the prompt such as buzzer and green LED, if circuit is not turned on, after certain time-delay
It returns.
Slave mode:
The embodiment 1 of slave mode will substitute traditional bare conductor, for cooperating host to carry out cable core checking work.
STC8A8K64S4A12 chip measures institute's nuclear cables core ribbon electricity situation by voltage acquisition module, and judges voltage type.If
Cable core electrification, then measuring instrument starts voice visual alarm system at once, prompts operator accidentally to touch energized circuit, and pass through
Relay cuts off the connection between embodiment and ground immediately；If confirming the safe no-voltage of cable core, two of measuring instrument are defeated
Enter grade to be shorted, cooperation host test work.
Embodiment 2
Embodiment 2 is extended on the basis of embodiment 1, is increased and is included brightness sensing module and lighting module, brightness
Sensing module is electrically connected with STC8A8K64S4A12 chip；Lighting module is electrically connected with STC8A8K64S4A12 chip.
Embodiment 2, which has been deposited, to be had the function of other than embodiment 1, when luminance sensor detects surrounding brightness deficiency,
STC8A8K64S4A12 chip starts lighting module and provides illumination, and staff is facilitated to apply in the environment of luminance shortage
Work.
The same or similar label correspond to the same or similar components；
The terms describing the positional relationship in the drawings are only for illustration, should not be understood as the limitation to this patent；
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this
Made any modifications, equivalent replacements, and improvements etc., should be included in the claims in the present invention within the spirit and principle of invention
Protection scope within.
Claims (10)
1. a kind of substation cable core is to measuring instrument, which is characterized in that including central processing module, voltage measurement module, lead to
Disconnected measurement module, wherein
The voltage measurement module is used to carry out secondary circuit voltage measurement, voltage measurement module and central processing module electricity
Connection；
The on-off measurement module has host mode and slave mode, and the host mode measures cable core band point feelings
Condition, the slave mode is for cooperating host to complete checking work, on-off measurement module and central processing module to cable core
Electrical connection；
The central processing module includes STC8A8K64S4A12 chip；The on-off measurement module includes that host on-off is surveyed
Quantum module and slave on-off measure submodule, and the host on-off measurement submodule is used for host mode, and host on-off is surveyed
The output stage of quantum module is electrically connected with the input stage of central processing module；The slave on-off measurement submodule is used for slave
The output stage of mode, slave on-off measurement submodule is electrically connected with the input stage of central processing module；The host on-off is surveyed
The input stage of quantum module is identical as the slave on-off measurement input stage of submodule；
The slave on-off measurement submodule includes the first relay, the 9th diode, the 6th NPN triode, the 22nd
Resistance, wherein
The input stage of the slave on-off measurement submodule includes first input end and the second input terminal, and first input end is used for
High potential is acquired, the second input terminal is for acquiring low potential；
The first input end of the slave on-off measurement submodule is electrically connected with one end of the switch-side of the first relay；
Second input terminal of the slave on-off measurement submodule is electrically connected with the other end of the switch-side of the first relay；
One termination power of the control side of first relay；
The other end of the control side of first relay is electrically connected with the anode of the 9th diode；
One end of the control side of first relay is electrically connected with the cathode of the 9th diode；
The other end of the control side of first relay is electrically connected with the collector of the 6th NPN triode；
The emitter of 6th NPN triode is grounded；
The ground level of 6th NPN triode is electrically connected with one end of the 22nd resistance；
The other end of 22nd resistance is electrically connected with No. 23 pins of STC8A8K64S4A12 chip.
2. substation cable core according to claim 1 is to measuring instrument, which is characterized in that the host on-off measurement
Submodule includes the first bridge rectifier, the second relay, third diode, third NPN triode, bi-directional voltage stabilizing pipe, the
12 resistance, the 15th resistance, the 22nd resistance, the 19th resistance, wherein
The first input end of the host on-off measurement submodule is electrically connected with one end of the switch-side of the second relay；
The other end of the switch-side of second relay is electrically connected with one end of the 15th resistance；
The other end of 15th resistance is electrically connected with one end of bi-directional voltage stabilizing pipe；
The other end of 15th resistance is electrically connected with No. 1 pin of STC8A8K64S4A12 chip；
Second input terminal of the host on-off measurement submodule is electrically connected with the first input end of the first bridge rectifier；
First output end of first bridge rectifier is electrically connected with one end of twelfth resistor；
The other end of the twelfth resistor is electrically connected with No. 2 pins of STC8A8K64S4A12 chip；
One end of the twelfth resistor is electrically connected with one end of bi-directional voltage stabilizing pipe；
One end of 15th resistance is electrically connected with the other end of bi-directional voltage stabilizing pipe；
One termination power of the control side of second relay；
The other end of the control side of second relay is electrically connected with the anode of third diode；
One end of the control side of second relay is electrically connected with the cathode of third diode；
The other end of the control side of second relay is electrically connected with the collector of third NPN triode；
The emitter of the third NPN triode is grounded；
The base stage of the third NPN triode is electrically connected with one end of the 19th resistance；
The other end of 19th resistance is electrically connected with No. 24 pins of STC8A8K64S4A12 chip.
3. substation cable core according to claim 1 or 2 is to measuring instrument, which is characterized in that the voltage measurement
Module includes differentiating submodule and acquisition submodule, wherein
Described differentiates that submodule for the positive/negative differentiation to voltage to alternating current and direct current, differentiates the output of submodule
Grade is electrically connected with the input stage of central processing module；
The output stage of the acquisition submodule is electrically connected with the input stage of central processing module；
The differentiation submodule and acquisition submodule uses identical input stage.
4. substation cable core according to claim 3 is to measuring instrument, which is characterized in that the acquisition submodule packet
Include the second bridge rectifier, the 8th resistance, the 9th resistance, eleventh resistor, third capacitor, the tenth capacitor and the 11st electricity
Hold, wherein
The first input end of second bridge rectifier is defined as the first input end of acquisition submodule；
Second input terminal of second bridge rectifier is defined as the second input terminal of acquisition submodule；
First output end of second bridge rectifier is electrically connected with one end of the 11st capacitor；
The second output terminal of second bridge rectifier is electrically connected with the other end of the 11st capacitor；
First output end of second bridge rectifier is electrically connected with one end of eleventh resistor；
The other end of the eleventh resistor is electrically connected with one end of the 8th resistance；
The other end of 8th resistance is electrically connected with one end of the 9th resistance；
The other end of 9th resistance is electrically connected with the other end of the 11st capacitor；
The other end of 9th resistance is grounded；
The other end of 8th resistance is electrically connected with No. 3 pins of STC8A8K64S4A12 chip；
The other end of 8th resistance is electrically connected with one end of third capacitor；
The other end of 9th resistance is electrically connected with the other end of third capacitor；
The other end of 8th resistance is electrically connected with one end of the tenth capacitor；
The other end of 9th resistance is electrically connected with the other end of the tenth capacitor.
5. substation cable core according to claim 3 is to measuring instrument, which is characterized in that the differentiation submodule packet
Include first resistor, second resistance, 3rd resistor, the 4th resistance, the 5th resistance, the 6th resistance, first diode, the two or two pole
Pipe, the first voltage-stabiliser tube, the second voltage-stabiliser tube, first capacitor, the second capacitor, the first optic coupling element, the second optic coupling element, wherein
The input stage of the differentiation submodule includes first input end and the second input terminal, and first input end is for acquiring high electricity
Gesture, the second input terminal is for acquiring low potential；
One end of 5th resistance is defined as the first input end of discrimination module, the other end and 3rd resistor of the 5th resistance
One end electrical connection；
One end of 6th resistance is defined as the second input terminal of discrimination module, the other end and the 4th resistance of the 6th resistance
One end electrical connection；
The other end of the 3rd resistor is electrically connected with the anode of the second diode；
The other end of the 3rd resistor is electrically connected with the anode of the first voltage-stabiliser tube；
The other end of the 3rd resistor is electrically connected with one end of first capacitor；
The cathode of second diode is electrically connected with the cathode of the second voltage-stabiliser tube；
The cathode of second diode is electrically connected with the other end of the second capacitor；
The cathode of second diode is electrically connected with one end of second resistance；
The other end of 4th resistance is electrically connected with the anode of first diode；
The other end of 4th resistance is electrically connected with the anode of the second voltage-stabiliser tube；
The other end of 4th resistance is electrically connected with one end of the second capacitor；
The cathode of the first diode is electrically connected with the cathode of the first voltage-stabiliser tube；
The cathode of the first diode is electrically connected with the other end of first capacitor；
The cathode of the first diode is electrically connected with one end of first resistor；
The other end of the first resistor is electrically connected with the first input end of the first optic coupling element；
The other end of the 3rd resistor is electrically connected with the second input terminal of the first optic coupling element；
The other end of the second resistance is electrically connected with the first input end of the second optic coupling element；
The other end of 4th resistance is electrically connected with the second input terminal of the second optic coupling element；
First output end of first optic coupling element is electrically connected with No. 21 pins of STC8A8K64S4A12 chip；
The second output terminal of first optic coupling element is grounded；
First output end of second optic coupling element is electrically connected with No. 20 pins of STC8A8K64S4A12 chip；
The second output terminal of second optic coupling element is grounded.
6. according to substation cable core described in claim 2,4 or 5 to measuring instrument, which is characterized in that the substation
It further includes sound and light alarm module that cable core, which checks measuring instrument, and the sound and light alarm module is electrically connected with central processing module.
7. substation cable core according to claim 6 is to measuring instrument, which is characterized in that the sound and light alarm module
Including NY9A001 chip, the second electrolytic capacitor, the 4th diode, the 6th diode, the 6th capacitor, buzzer, the 2nd NPN tri-
Pole pipe, the 4th NPN triode, thirteenth resistor, the 14th resistance, the 16th resistance, the 17th resistance, the 18th resistance,
Two is light-emitting LED, third is light-emitting LED and loudspeaker, wherein
No. 7 pins of the NY9A001 chip are electrically connected with one end of the 6th capacitor；
The other end of 6th capacitor is grounded；
No. 7 pins of the NY9A001 chip are electrically connected with the cathode of the 4th diode；
The anode of 4th diode connects power supply；
No. 7 pins of the NY9A001 chip are electrically connected with the anode of the second electrolytic capacitor；
The cathode of second electrolytic capacitor is grounded；
No. 8 pins of the NY9A001 chip are electrically connected with one end of loudspeaker；
The other end of the loudspeaker is grounded；
No. 5 pins of the NY9A001 chip are electrically connected with the collector of the 4th NPN triode；
The emitter of 4th NPN triode is grounded；
The base stage of 4th NPN triode is electrically connected with one end of the 16th resistance；
The other end of 16th resistance is electrically connected with the emitter of the 4th NPN triode；
The base stage of 4th NPN triode is electrically connected with one end of the 14th resistance；
The other end of 14th resistance is electrically connected with No. 42 pins of STC8A8K64S4A12 chip；
One termination power of the thirteenth resistor；
The other end of the thirteenth resistor is electrically connected with the second light-emitting LED anode；
The light-emitting LED cathode of described second is electrically connected with No. 41 pins of STC8A8K64S4A12 chip；
The light-emitting LED anode of the third connects power supply；
The light-emitting LED cathode of the third is electrically connected with one end of the 17th resistance；
The other end of 17th resistance is electrically connected with the anode of the 6th diode；
The light-emitting LED anode of the third is electrically connected with the cathode of the 6th diode；
One termination power of the buzzer；
The other end of the buzzer is electrically connected with the anode of the 6th diode；
The anode of 6th diode is electrically connected with the collector of the second NPN triode；
The emitter of second NPN triode is grounded；
The base stage of second NPN triode is electrically connected with one end of the 18th resistance；
The other end of 18th resistance is electrically connected with No. 26 pins of STC8A8K64S4A12 chip.
8. according to substation cable core described in claim 2,4,5 or 7 to measuring instrument, which is characterized in that the center
Processing module further include acknowledgement key, the 9th capacitor, inductance, the first electrolytic capacitor, the 4th capacitor, the tenth resistance, the 5th capacitor and
Third voltage-stabiliser tube, wherein
No. 38 pins of the STC8A8K64S4A12 chip are electrically connected with one end of acknowledgement key；
The other end of the acknowledgement key is grounded；
No. 16 pins of the STC8A8K64S4A12 chip are grounded；
No. 16 pins of the STC8A8K64S4A12 chip are electrically connected with one end of the 9th capacitor；
The other end of 9th capacitor is electrically connected with No. 14 pins of STC8A8K64S4A12 chip；
No. 14 pins of the STC8A8K64S4A12 chip connect power supply；
No. 12 pins of the STC8A8K64S4A12 chip are electrically connected with one end of inductance；
Another termination power of the inductance；
No. 12 pins of the STC8A8K64S4A12 chip are electrically connected with the anode of the first electrolytic capacitor；
The minus earth of first electrolytic capacitor；
No. 12 pins of the STC8A8K64S4A12 chip are electrically connected with one end of the 4th capacitor；
The other end of 4th capacitor is electrically connected with the cathode of the first electrolytic capacitor；
No. 12 pins of the STC8A8K64S4A12 chip are electrically connected with one end of the tenth resistance；
The other end of tenth resistance is electrically connected with one end of the 5th capacitor；
The other end of 5th capacitor is electrically connected with the other end of the 4th capacitor；
No. 12 pins of the STC8A8K64S4A12 chip are electrically connected with No. 11 pins of STC8A8K64S4A12 chip；
No. 12 pins of the STC8A8K64S4A12 chip are electrically connected with the cathode of third voltage-stabiliser tube；
The plus earth of the third voltage-stabiliser tube.
9. substation cable core according to claim 8 is to measuring instrument, which is characterized in that the substation cable core
Checking measuring instrument further includes brightness sensing module and lighting module, and the brightness sensing module is electrically connected with central processing module
It connects；The lighting module is electrically connected with central processing module.
10. according to claim 1, substation cable core described in 2,4,5 or 7 is to measuring instrument, which is characterized in that the change
Station cable core further includes brightness sensing module and lighting module to measuring instrument, the brightness sensing module and central processing
Module electrical connection；The lighting module is electrically connected with central processing module.
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| CN201910650946.5A CN110261738A (en) | 2019-07-18 | 2019-07-18 | A kind of substation cable core is to measuring instrument |
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| CN201910650946.5A CN110261738A (en) | 2019-07-18 | 2019-07-18 | A kind of substation cable core is to measuring instrument |
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