CN2586165Y - Multiroute cable insulation measurer - Google Patents
Multiroute cable insulation measurer Download PDFInfo
- Publication number
- CN2586165Y CN2586165Y CN 02258986 CN02258986U CN2586165Y CN 2586165 Y CN2586165 Y CN 2586165Y CN 02258986 CN02258986 CN 02258986 CN 02258986 U CN02258986 U CN 02258986U CN 2586165 Y CN2586165 Y CN 2586165Y
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- circuit
- control detection
- cpu control
- scan
- measurement
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Abstract
The utility model relates to an insulation resistance measuring device for multiple-core cable wires, which is composed of a switching and scanning circuit, abridge measuring circuit, a CPU control detection circuit, a power circuit, a display circuit, a printing interface circuit and an alarm circuit. When the utility model is in operation, core wires of a cable waiting to be detected are respectively accessed with the input terminals of the switching and scanning circuit. The CPU circuit sends out instructions, and the switching and scanning circuit carries out scanning. A measurement and connection end is connected with the bridge measuring circuit which can carry out measurement according to the instructions. The data after measured is sent to the CPU circuit to carry out processing and then is sent to a specific terminal of the display circuit to carry out display. If unqualified items exist, the CPU control detection circuit sends the signal to the alarm circuit to carry out alarm.
Description
Affiliated technical field
The utility model belongs to the electric variable measurement technical field, relates to a kind of device that is used for the multi-core cable wire insulation measurement.
Background technology
Whether the high-quality of polycore cable insulation situation always is the problem that manufacturer and user extremely pay close attention to.Relevant department carried out the polycore cable insulation measurement and generally all was to use megger or numerical megger in the past, during measurement, ground wire terminated cable ground wire or screen layer with instrument, the a certain heart yearn of instrument wiring (+) terminated cable, after shaking megger and treating that indicator settles out, can show approximate insulating resistance value.Because cable core is more, a cable can only be measured several cores resistance over the ground at every turn randomly, if survey the wire insulation resistance of one 19 core cable, needs wiring to measure in theory more than 200 time, almost is unpractical in the practical operation.So this area is not measured wire insulation resistance in the ordinary course of things at present, only measures a few cores insulation resistance over the ground, so just buried potential safety hazard inevitably.
The utility model content
The purpose of this utility model is to overcome the problem that prior art exists, and a kind of novel structure, easy to operate, the multiway cable insulation measurement instrument that can quick and precisely measure the cable line resistance are provided.
Technical solution for achieving the above object is such: the multiway cable insulation measurement instrument that is provided is a kind of intelligent measuring device that utilizes the automatic switchover scanning technique, it is by the switched scan circuit, bridge measuring circuit, CPU control detection circuit, feed circuit, display circuit, print interface circuit and warning circuit are formed, the multichannel input scan end of switched scan circuit connects with waiting each heart yearn of looking into polycore cable respectively, the scan control I/O end of switched scan circuit links to each other with the scan control output/input end of CPU control detection circuit, the input end of bridge measuring circuit and output terminal connect with the measurement output terminal of switched scan circuit and the measurement input end of CPU control detection circuit respectively, and the corresponding output terminal of feed circuit is connected to the power input of above-mentioned each circuit.In the course of work, the heart yearn of waiting to look into cable is inserted the input end of switched scan circuit respectively, send instruction by CPU control detection circuit, the switched scan circuit scans, and will measure union end and be connected to bridge measuring circuit, by the voltage (250V of bridge measuring circuit with appointment, 500V, 1000V can set) measure, then the data after will measuring are delivered to the particular end of delivering to display circuit after CPU control detection circuit is handled again and are shown (representing insulation resistance between the 2-3 core as 2-3), if any nonconformance, CPU control detection circuit is delivered to warning circuit report to the police (numerical value of demonstration flashes, and sends the chimes of doom of " pouting; pout " simultaneously) with signal.After measurement was finished, CPU control detection circuit was delivered to print interface circuit with print signal, and external printer gets final product print result, and the memory internal circuit is with data accumulating, in order to checking.
Compared with prior art, the utlity model has rational in infrastructure, cost is low, intelligent degree height, characteristics such as practical, it adopts the technical approach of automatic switchover sweep circuit and electronic surveying, saved the trouble of artificial wiring, reduced the labour intensity that uses megger, thereby realized the measurement of insulating between known technology and product can't be realized in the past multiway cable line, thoroughly eliminated potential safety hazard, this also be other measurement insulation resistance at present instrument can't accomplish.
Description of drawings
Fig. 1 is the design concept block diagram of multiway cable insulation measurement instrument described in the utility model.
Fig. 2～Fig. 5 is a practical circuit diagram that is used to measure No. 20 cable insulation measuring instrument structures of 19 core cables.Wherein Fig. 2 is the circuit on line figure of CPU control detection circuit part, Fig. 3 is the circuit on line figure of switched scan circuit part, Fig. 4 is the circuit on line synoptic diagram of warning circuit and switched scan interface circuit part, and Fig. 5 is the circuit on line figure of bridge measuring circuit and interface circuit.
Embodiment
Referring to accompanying drawing, the main operating circuit of the described No. 20 cable insulation measuring instruments of this example structure comprises CPU control detection circuit 4, switched scan circuit 2, bridge measuring circuit 3 and feed circuit 5, display circuit 6, print interface circuit 8 and warning circuit 7 etc.In the specific embodiment structure that Fig. 2～Fig. 5 provides, CPU control detection circuit 4 adopts the AT89C51 single-chip microcomputer, and it is the core of whole measuring instrument, is responsible for handling actual measurement information, carries out control command.Switched scan circuit 2 is by the parallel array of forming (Fig. 3) of 20 NAIS-TX24 type relays, input end H1～the H20 of array inserts a heart yearn waiting to look into cable 1 respectively, and output terminal SK1～SK4 0 delivers to the D0～D7D port of ATA89C51 single-chip microcomputer through interface circuit shown in Figure 4.Bridge measuring circuit 3 adopts the TCL7018 chip, and its 30 and 31 pin is an input pin, is connected with the CSDL line with the CSGY of switched scan circuit 2 respectively, and its 2～25 pin is an output pin, is connected to the D0～D7D end of AT89C51 single-chip microcomputer by interface circuit shown in Figure 5.Warning circuit 7 is made up of empty frame enclosed among Fig. 4 ULN2003 chip and loudspeaker.Print interface circuit 8 adopts RS232 type driver.Display circuit 6 is made of the device that many models are all TB3612.Feed circuit 5 adopt BYQ1 and stabilized voltage supply integrated circuit such as MC7805, MC7809, and it provides power supply for whole circuit.
Claims (1)
- A kind of multiway cable insulation measurement instrument, it is characterized in that it is by switched scan circuit (2), bridge measuring circuit (3), CPU control detection circuit (4), feed circuit (5), display circuit (6), print interface circuit (8) and warning circuit (7) are formed, the multichannel input scan end of switched scan circuit (2) connects with each heart yearn of polycore cable to be looked into (1) respectively, the scan control I/O end of switched scan circuit (2) links to each other with the scan control output/input end of CPU control detection circuit (4), display circuit (6), the corresponding output terminal that the signal input part of print interface circuit (8) and warning circuit (7) is connected to CPU control detection circuit (4) respectively communicates, the input end of bridge measuring circuit (3) and output terminal connect with the measurement output terminal of switched scan circuit (2) and the measurement input end of CPU control detection circuit (4) respectively, and the corresponding output terminal of feed circuit (5) is connected to the power input of above-mentioned each circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02258986 CN2586165Y (en) | 2002-11-28 | 2002-11-28 | Multiroute cable insulation measurer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02258986 CN2586165Y (en) | 2002-11-28 | 2002-11-28 | Multiroute cable insulation measurer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2586165Y true CN2586165Y (en) | 2003-11-12 |
Family
ID=33726571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02258986 Expired - Fee Related CN2586165Y (en) | 2002-11-28 | 2002-11-28 | Multiroute cable insulation measurer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2586165Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106405375A (en) * | 2016-08-31 | 2017-02-15 | 福建星网视易信息系统有限公司 | Multipath resistance and voltage testing method, device and system |
| CN107843796A (en) * | 2017-12-06 | 2018-03-27 | 四川海天仪表电器开发有限公司 | Armored vehicle chassis electronic equipment detection means |
| CN109031075A (en) * | 2018-09-10 | 2018-12-18 | 广东电网有限责任公司 | Multi-wire core insulation automatic detector and system |
| CN109239548A (en) * | 2018-08-30 | 2019-01-18 | 中国船舶重工集团公司第七〇五研究所 | A kind of equipment and measurement method of rapid survey insulation |
-
2002
- 2002-11-28 CN CN 02258986 patent/CN2586165Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106405375A (en) * | 2016-08-31 | 2017-02-15 | 福建星网视易信息系统有限公司 | Multipath resistance and voltage testing method, device and system |
| CN107843796A (en) * | 2017-12-06 | 2018-03-27 | 四川海天仪表电器开发有限公司 | Armored vehicle chassis electronic equipment detection means |
| CN109239548A (en) * | 2018-08-30 | 2019-01-18 | 中国船舶重工集团公司第七〇五研究所 | A kind of equipment and measurement method of rapid survey insulation |
| CN109031075A (en) * | 2018-09-10 | 2018-12-18 | 广东电网有限责任公司 | Multi-wire core insulation automatic detector and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |