CN114371428A - Safety detection circuit of power supply system - Google Patents
Safety detection circuit of power supply system Download PDFInfo
- Publication number
- CN114371428A CN114371428A CN202210104581.8A CN202210104581A CN114371428A CN 114371428 A CN114371428 A CN 114371428A CN 202210104581 A CN202210104581 A CN 202210104581A CN 114371428 A CN114371428 A CN 114371428A
- Authority
- CN
- China
- Prior art keywords
- power supply
- supply system
- detection circuit
- distribution cabinet
- detection device
- 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.)
- Pending
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Classifications
-
- 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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/66—Testing of connections, e.g. of plugs or non-disconnectable joints
- G01R31/68—Testing of releasable connections, e.g. of terminals mounted on a printed circuit board
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16566—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533
- G01R19/16576—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533 comparing DC or AC voltage with one threshold
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Distribution Board (AREA)
Abstract
The invention aims to provide a safety detection circuit of a power supply system, which is characterized in that: one end of a itinerant detection device 4 with a voltmeter 1 is connected with a power supply 2 of a power distribution cabinet 3, and the other end of the itinerant detection device is connected with a connecting line between the power distribution cabinet 3 and an electric appliance 5. Due to the fact that the detection circuit of the voltmeter 1 is added, on-line or regular safety monitoring of the conducting state of the power distribution cabinet 3 is achieved.
Description
The technical field is as follows:
the invention relates to a safety detection circuit of a power supply system.
Background art:
the safety detection of a power distribution cabinet between a power supply and an electrical appliance of the existing power supply system is manually operated, and the detection must be carried out one by one on circuit connection points.
The invention content is as follows:
the invention aims to provide a safety detection circuit of a power supply system, which is characterized in that: one end of a itinerant detection device 4 with a voltmeter 1 is connected with a power supply 2 of a power distribution cabinet 3, and the other end of the itinerant detection device is connected with a connecting line between the power distribution cabinet 3 and an electric appliance 5. After the power supply system is started, as long as the switch contact or any line connection point in the power distribution cabinet 3 is in abnormal electrical contact, the voltmeter 1 generates abnormal display (namely, voltage drop is generated due to poor contact and heating of the switch contact or the line connection point). The itinerant detection device 4 is a multi-input voltage itinerant detection device which has alarm threshold setting, data storage, alarm, data wired and wireless transmission functions, besides the voltmeter 1.
Due to the fact that the detection circuit of the voltmeter 1 is added, on-line or regular safety monitoring of the conducting state of the power distribution cabinet 3 is achieved.
Description of the drawings:
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a schematic view of a specific connection structure of FIG. 1.
Fig. 3 is a functional structure diagram of the itinerant detection device 4.
The specific implementation mode is as follows:
example 1:
referring to fig. 1 and fig. 2, one end of a itinerant detection device 4 with a voltmeter 1 is connected with a power supply 2 of a power distribution cabinet 3, and the other end is connected with a connecting line between the power distribution cabinet 3 and an electrical appliance 5. The traditional detection needs to manually measure the temperature one by using a temperature measuring gun so as to judge whether the temperature is abnormal or not. After the detection circuit is adopted, if the detected branch circuit generates heat to cause voltage drop due to poor contact of a switch contact or a line connecting point in the power distribution cabinet 3, the voltage drop is displayed on the voltmeter 1. And then the branch is manually detected by the staff.
Example 2:
referring to fig. 1, 2 and 3, the circuit detecting device 4 is a multi-terminal input voltage circuit detecting device having functions of alarm threshold setting, data storage, alarm, data wired and wireless transmission, in addition to the voltmeter 1. The itinerant detection device 4 comprises a multi-path voltage input sampling module 8 for detecting the voltage input value of each point of a detected point; the alarm threshold setting module 9 is used for setting the number of values of the voltage of the detection point, and generating an alarm signal; the data storage module 10 is used for recording and storing alarm data of detected points; the alarm output module 11 is used for generating sound and light alarm signals; and the data transmission module 12 is used for transmitting the detection data to other associated equipment (through a wired or wireless transmission mode). Because there are a plurality of branch circuits in switch board 3, every branch circuit has a plurality of circuit tie points, and every switch contact and circuit tie point all probably generate heat and produce the pressure drop, like master switch 6, each branch circuit switch 7 etc. consequently need each branch circuit sampling test to guarantee can monitor comprehensively. The rest is the same as in example 1. The roving inspection device 4 is available on the market. By continuously detecting the voltage of each branch, the automatic monitoring of the conducting state of each branch in the full-time power distribution cabinet 3 can be realized.
Claims (2)
1. A safety detection circuit for a power supply system, characterized by: one end of a itinerant detection device (4) with a voltmeter (1) is connected with a power supply (2) of a power distribution cabinet (3), and the other end of the itinerant detection device is connected with a connecting line between the power distribution cabinet (3) and an electric appliance (5).
2. The safety detection circuit of a power supply system according to claim 1, characterized in that: the itinerant detection device (4) is a multi-point input voltage itinerant detection device which has the functions of alarm threshold setting, data storage, alarming, data wired and wireless transmission besides the voltmeter (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210104581.8A CN114371428A (en) | 2022-01-28 | 2022-01-28 | Safety detection circuit of power supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210104581.8A CN114371428A (en) | 2022-01-28 | 2022-01-28 | Safety detection circuit of power supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114371428A true CN114371428A (en) | 2022-04-19 |
Family
ID=81146643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210104581.8A Pending CN114371428A (en) | 2022-01-28 | 2022-01-28 | Safety detection circuit of power supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114371428A (en) |
-
2022
- 2022-01-28 CN CN202210104581.8A patent/CN114371428A/en active Pending
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |