CN212539207U - Detection system - Google Patents
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- CN212539207U CN212539207U CN202021848098.3U CN202021848098U CN212539207U CN 212539207 U CN212539207 U CN 212539207U CN 202021848098 U CN202021848098 U CN 202021848098U CN 212539207 U CN212539207 U CN 212539207U
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Abstract
The utility model provides a detection system relates to signal detection technical field. The detection system includes: the device comprises a switch sensor, a change-over cable structure and detection equipment; the switching cable structure comprises three cables, wherein a first resistor is connected between a first cable and a second cable; the switch sensor is an NPN switch sensor, the positive electrode of a power supply of the switch sensor is connected with one end of the first cable, the negative electrode of the power supply of the switch sensor is connected with one end of a third cable, and the signal output end of the switch sensor is connected with one end of the second cable; the detection device is a pull-down detection circuit, the other end of the first cable is connected with a power supply end of the detection device, the other end of the second cable is connected with a signal input end of the detection device, and the other end of the third cable is connected with a grounding end of the detection device. Use the embodiment of the utility model provides an above-mentioned detecting system can improve check out test set's availability factor.
Description
Technical Field
The utility model relates to a signal detection technical field particularly, relates to a detecting system.
Background
The detection device can detect the state signal of the detected object by using a switch sensor, wherein the switch sensor generally comprises an infrared proximity switch, a position sensor, a metal detection sensor and other types of sensors, and generally, the switch sensor can be divided into two types: NPN type and PNP type.
At present, an NPN-type switch sensor can transmit a detected status signal to a detection device only through a pull-up detection circuit, and a PNP-type switch sensor can transmit a detected status signal to a detection device only through a pull-down detection circuit.
However, when the type of the detection circuit in the detection device is fixed, the detection device cannot accurately determine the status signal sent by the switch sensor without a matching type of switch sensor, that is, the detection device cannot operate, and thus the use efficiency of the detection device is reduced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a switching signal converting circuit and cable to the not enough among the above-mentioned prior art, can improve check out test set's availability factor.
In order to achieve the above object, the embodiment of the present invention adopts the following technical solutions:
in a first aspect, an embodiment of the present invention provides a detection system, including: the device comprises a switch sensor, a change-over cable structure and detection equipment; the switching cable structure comprises three cables, wherein a first resistor is connected between the first cable and the second cable;
the switch sensor is an NPN switch sensor, the positive electrode of a power supply of the switch sensor is connected with one end of the first cable, the negative electrode of the power supply of the switch sensor is connected with one end of a third cable, and the signal output end of the switch sensor is connected with one end of the second cable;
the detection device is a pull-down detection circuit, the other end of the first cable is connected with a power supply end of the detection device, the other end of the second cable is connected with a signal input end of the detection device, and the other end of the third cable is connected with a grounding end of the detection device.
Optionally, the detection device comprises: an optocoupler device and a controller; the power supply end of the optical coupler device is the power supply end of the detection equipment, the signal input end of the optical coupler device is the signal input end of the detection equipment, and the grounding end of the optical coupler device is the grounding end of the detection equipment;
and a second resistor is connected between the signal input end of the optical coupler and the grounding end.
Optionally, the first cable and the second cable have a welding point at different positions respectively; the first resistor is connected by solder joints on the first cable and the second cable.
Optionally, the first cable, the second cable and the first resistor are respectively provided with a heat shrink sleeve on the outside.
Optionally, the jumper cable structure is an electric cable formed by heating, shrinking and fixing a heat-shrinkable sleeve on the whole outer portion of the first cable, the second cable and the third cable.
In a second aspect, the embodiment of the present invention further provides a detection system, including: the device comprises a switch sensor, a change-over cable structure and detection equipment; the switching cable structure comprises at least three cables, wherein a third resistor is connected between the first cable and the second cable;
the switch sensor is a PNP type switch sensor, the positive electrode of a power supply of the switch sensor is connected with one end of the third cable, the negative electrode of the power supply of the switch sensor is connected with one end of the second cable, and the signal output end of the switch sensor is connected with one end of the first cable;
the detection device is a pull-up detection circuit, the other end of the first cable is connected with a signal input end of the detection device, the other end of the second cable is connected with a grounding end of the detection device, and the other end of the third cable is connected with a power supply end of the detection device.
Optionally, the detection device comprises: an optocoupler device and a controller; the power supply end of the optical coupler device is the power supply end of the detection equipment, the signal input end of the optical coupler device is the signal input end of the detection equipment, and the grounding end of the optical coupler device is the grounding end of the detection equipment;
and a fourth resistor is connected between the power supply end and the signal input end of the optocoupler.
Optionally, the first cable and the second cable have a welding point at different positions respectively; the third resistor is connected by solder joints on the first cable and the second cable.
Optionally, the first cable, the second cable and the third resistor are respectively provided with a heat shrink sleeve on the outside.
Optionally, the jumper cable structure is an electric cable formed by heating, shrinking and fixing a heat-shrinkable sleeve on the whole outer portion of the first cable, the second cable and the third cable.
The utility model has the advantages that:
the embodiment of the utility model provides a pair of detecting system, this detecting system includes: the device comprises a switch sensor, a change-over cable structure and detection equipment; the switching cable structure comprises three cables, wherein a first resistor is connected between a first cable and a second cable; the switch sensor is an NPN switch sensor, the positive electrode of a power supply of the switch sensor is connected with one end of the first cable, the negative electrode of the power supply of the switch sensor is connected with one end of a third cable, and the signal output end of the switch sensor is connected with one end of the second cable; the detection device is a pull-down detection circuit, the other end of the first cable is connected with a power supply end of the detection device, the other end of the second cable is connected with a signal input end of the detection device, and the other end of the third cable is connected with a grounding end of the detection device. Adopt the embodiment of the utility model provides an above-mentioned detecting system, when switch sensor is NPN type switch sensor and check out test set for pull-down detection circuitry, pull-down detection circuitry can detect out NPN type switch sensor output signal's two kinds of states through the transposition cable structure, that is to say, when check out test set and switch sensor mismatch, check out test set also can normally work, can improve check out test set's availability factor like this.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a detection system according to an embodiment of the present invention;
fig. 2 is a structural diagram of an internal connection relationship when the switch sensor provided in the embodiment of the present invention is an NPN-type switch sensor;
fig. 3 is a schematic structural diagram of another detection system provided in the embodiment of the present invention;
fig. 4 is a schematic structural diagram of a jumper cable structure according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of another detection system provided in the embodiments of the present application;
fig. 6 is a schematic structural diagram of another detection system according to an embodiment of the present invention.
Icon: 100-switch sensor; 200-a patch cable configuration; 300-a detection device; 101-a first cable; 102-a second cable; 103-a third cable; r1 — first resistance; 201-NPN type switch sensor; 202-a first main circuit; 203-NPN type triode; ZD 1-transient suppression diode; 301-an optocoupler device; 302-a controller; 303-a pull-down circuit; r2 — second resistance; r3 — third resistance; 600-PNP type switching sensor; 601-a second main circuit; 602-PNP type triode; 603-a pull-up circuit; r4-fourth resistor; d1-diode; ZD 2-a bidirectional transient suppression diode.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The detection system provided by the present invention can be explained by a plurality of embodiments as follows. Fig. 1 is a schematic structural diagram of a detection system according to an embodiment of the present invention, as shown in fig. 1, the detection system may include: a switch sensor 100, a patch cable structure 200 and a detection device 300; the patch cable structure 200 includes three cables, wherein a first resistor R1 is connected between the first cable 101 and the second cable 102.
The switch sensor 100 is an NPN-type switch sensor, a positive power supply of the switch sensor 100 is connected to one end of the first cable 101, a negative power supply of the switch sensor 100 is connected to one end of the third cable 103, and a signal output end of the switch sensor 100 is connected to one end of the second cable 102.
The detection device 300 is a pull-down detection circuit, the other end of the first cable 101 is connected to a power end of the detection device 300, the other end of the second cable 102 is connected to a signal input end of the detection device 300, and the other end of the third cable 103 is connected to a ground end of the detection device 300.
Alternatively, the switch sensor 100 may be an infrared proximity switch sensor, a position proximity sensor, a metal detection sensor, or other sensors capable of detecting the state of the object to be detected. When the measured signal corresponding to the measured object reaches a certain threshold, the switch sensor 100 can correspondingly output two state signals (high level or low level), which should be noted that the application does not limit the specific type of the switch sensor 100.
One end of the jumper cable structure 200 may be connected to the switch sensor 100, and the other end of the jumper cable structure 200 may be connected to the detection apparatus 300, wherein the jumper cable structure 200 includes a first cable 101, a second cable 102, a third cable 103, and a first resistor R1, one end of the first resistor R1 is connected to the first cable 101, and the other end of the first resistor R1 is connected to the second cable 102. The connection relationship between the interfaces of the first cable 101, the second cable 102, and the third cable 103, the ports of the switch sensor 100, and the ports of the detection device 300 may be different according to the type (NPN type, PNP type) of the switch sensor 100.
A specific connection relationship between the NPN-type switch sensor 100 and the jumper cable structure 200 will be described below.
Fig. 2 is a structural diagram of an internal connection relationship when the switch sensor provided in the embodiment of the present invention is an NPN-type switch sensor. As shown in fig. 2, the NPN switch sensor 201 includes a first main circuit 202 and an NPN transistor 203, wherein a base of the NPN transistor 203 is connected to the first main circuit 202, and a collector of the NPN transistor 203 is connected to a negative electrode of the transient suppression diode ZD1 and a signal output terminal of the NPN switch sensor 201 respectively; one end of an emitter of the NPN-type triode 203 is connected to the first main circuit 202, and the other end of the emitter is connected to the anode of the transient suppression diode ZD1 and the power supply negative port of the NPN-type switching sensor 201 respectively; the first main circuit 202 is also connected to the negative power supply port of the NPN-type switching sensor 201. The transient suppression diode ZD1 has an overvoltage protection function, and can maintain voltage stability.
For example, when the NPN-type switch sensor 100 is a metal proximity switch and the interface circuit of the detection device 300 is a pull-down detection circuit, the positive power supply terminal, the signal output terminal, and the negative power supply terminal of the switch sensor 100 are respectively connected to one end of the first cable 101, one end of the second cable 102, and one end of the third cable 103, and the power supply terminal, the signal input terminal, and the ground terminal of the detection device 300 are respectively connected to the other end of the first cable 101, the other end of the second cable 102, and the other end of the third cable 103. When the switching sensor 100 is close to metal, the NPN transistor 203 in fig. 2 may be turned on, which corresponds to the signal input terminal of the detection device 300 being grounded, i.e., the level of the signal input terminal is low; when the switching sensor 100 is far from the metal, the NPN transistor 203 in fig. 2 is not turned on, and since the first resistor R1 is connected to the power source terminal of the sensing device 300, the level input to the signal input terminal of the sensing device 300 is high even though the pull-down resistor in the pull-down sensing circuit of the sensing device 300 is grounded.
Like this when interface circuit receives the signal of NPN type switch sensor 100 for pull-down detection circuitry's check out test set 300, can detect two kinds of states (low level or high level) of signal equally through change over cable structure 200, need not reequip switch sensor 100 and/or check out test set 300, practiced thrift the cost to change over cable structure 200 simple structure, can conveniently connect a telephone switchboard and install, can not influence original line structure.
With the detection system shown in fig. 1, the detection system includes: the device comprises a switch sensor, a change-over cable structure and detection equipment; the switching cable structure comprises three cables, wherein a first resistor is connected between a first cable and a second cable; the switch sensor is an NPN switch sensor, the positive electrode of a power supply of the switch sensor is connected with one end of the first cable, the negative electrode of the power supply of the switch sensor is connected with one end of a third cable, and the signal output end of the switch sensor is connected with one end of the second cable; the detection device is a pull-down detection circuit, the other end of the first cable is connected with a power supply end of the detection device, the other end of the second cable is connected with a signal input end of the detection device, and the other end of the third cable is connected with a grounding end of the detection device. Adopt the embodiment of the utility model provides an above-mentioned detecting system, when switch sensor is NPN type switch sensor and check out test set for pull-down detection circuitry, pull-down detection circuitry can detect out NPN type switch sensor output signal's two kinds of states through the transposition cable structure, that is to say, when check out test set and switch sensor mismatch, check out test set also can normally work, can improve check out test set's availability factor like this.
Fig. 3 is a schematic structural diagram of another detection system provided in the embodiment of the present invention, as shown in fig. 3, the detection apparatus 300 includes: an optocoupler device 301 and a controller 302; a power supply end of the optical coupling device 301 is a power supply end of the detection apparatus 300, a signal input end of the optical coupling device 301 is a signal input end of the detection apparatus 300, and a ground end of the optical coupling device 301 is a ground end of the detection apparatus 300; a second resistor R2 is connected between the signal input terminal of the optocoupler 301 and the ground terminal.
In an application scenario requiring electrical isolation, the detection device 300 generally includes an optical coupler 301, and an input signal passes through the optical coupler 301 and then enters the controller 302. That is, the NPN type switch sensor 201 is connected to one end of the jumper cable structure 200, the other end of the jumper cable structure 200 is connected to one end of the pull-down circuit 303, and the other end of the pull-down circuit 303 is further connected to the power supply terminal, the signal input terminal, and the ground terminal of the optocoupler 301. The controller 302 may be a Microcontroller Unit (MCU). The resistance of the first resistor R1 is generally 1K Ω or 10K Ω, the resistance of the second resistor R2 is generally 10K Ω, and the supply voltage at the power supply end of the optocoupler device 301 is generally 12V or 24V.
When the resistance of the first resistor R1 in the patch cable structure 200 and the resistance of the second resistor R2 in the pull-down circuit 303 are both 10K Ω, the power supply voltage of the power supply terminal of the optocoupler device 301 is generally 12V or 24V. The NPN type switching sensor 201 is close to metal, the NPN type transistor 203 is conductive, and a signal input end of the optocoupler 301 is grounded, that is, the level of the signal input end is low; the NPN switch sensor 201 is far away from the metal, the NPN transistor 203 is not turned on, and the first resistor R1 and the second resistor R2 divide the supply Voltage (VCC) output from the power supply terminal of the optocoupler 301. The voltage at the signal input terminal of the optocoupler 301 is V1 ═ VCC (R1/(R1+ R2)), i.e. equal to 6V or 12V, which corresponds to the level input at the signal input terminal of the optocoupler 301 being high.
Fig. 4 is a schematic structural diagram of a switching cable structure according to an embodiment of the present invention, as shown in fig. 4, a welding point is respectively disposed at different positions on the first cable 101 and the second cable 102; the first resistor R1 is connected by solder joints on the first cable 101 and the second cable 102. Further, heat shrink sleeves may be provided outside the first cable 101, the second cable 102, and the first resistor R1, respectively. In another practical embodiment, a heat shrinkable sleeve may be further added to the entire outer portions of the first cable 101, the second cable 102, and the third cable 103 provided with the heat shrinkable sleeve for heat shrinking and fixing, and finally, a cable line is formed, i.e., the patch cable structure 200.
The heat-shrinkable sleeve can be also called as a heat-shrinkable protective sleeve, and is particularly added at welding points at two ends of the first resistor R1, so that the welding points can be prevented from being corroded and rusted; the single cable is provided with the heat-shrinkable sleeve, and the heat-shrinkable sleeve is added to the outside of the whole cable, so that the cable not only can play an insulating role, but also can resist corrosion, further the stability of the switching cable structure is improved, and the detection equipment can more accurately detect the signal state sent by the switch sensor.
The following describes a specific connection relationship and signal status contents between the PNP type switch sensor 100 and the jumper cable structure 200.
Fig. 5 is a schematic structural diagram of another detection system provided in the embodiment of the present application, and as shown in fig. 5, the detection system may include: a switch sensor 100, a patch cable structure 200 and a detection device 300; the patch cable structure 200 includes three cables, wherein a third resistor R3 is connected between the first cable 101 and the second cable 102.
The switch sensor 100 is a PNP switch sensor, the positive power supply of the switch sensor 100 is connected to one end of the third cable 103, the negative power supply of the switch sensor 100 is connected to one end of the second cable 102, and the signal output end of the switch sensor 100 is connected to one end of the first cable 101.
The detection device 300 is a pull-up detection circuit, the other end of the first cable 101 is connected to a signal input terminal of the detection device 300, the other end of the second cable 102 is connected to a ground terminal of the detection device 300, and the other end of the third cable 103 is connected to a power supply terminal of the detection device 300.
When the PNP-type switch sensor 100 is a metal proximity switch and the interface circuit of the detection device 300 is a pull-up detection circuit, the positive power supply terminal, the signal output terminal, and the negative power supply terminal of the switch sensor 100 are respectively connected to one end of the third cable 103, one end of the first cable 101, and one end of the second cable 102, and the power supply terminal, the signal input terminal, and the ground terminal of the detection device 300 are respectively connected to the other end of the third cable 103, the other end of the first cable 101, and the other end of the second cable 102. When the switch sensor 100 is close to metal, the PNP transistor in the switch sensor 100 can be turned on, which is equivalent to that the signal input terminal of the detection device 300 is connected to the power supply terminal thereof, i.e. the level of the signal input terminal is high; when the switching sensor 100 is far from the metal, the PNP transistor is not turned on, and since the third resistor R3 is connected to the ground terminal of the sensing apparatus 300, the level input to the signal input terminal of the sensing apparatus 300 is a low level even if the pull-up resistor in the pull-up sensing circuit of the sensing apparatus 300 is connected to the power source terminal.
Like this when interface circuit receives PNP type switch sensor 100's signal for pull-up detection circuitry's check out test set 300, can detect two kinds of states (low level or high level) of signal equally through change over cable structure 200, need not reequip switch sensor 100 and/or check out test set 300, practiced thrift the cost to change over cable structure 200 simple structure, can conveniently work a telephone switchboard and install, can not influence original circuit structure.
The following explains a connection relationship of the PNP type switch sensor 100 and the jumper cable structure 200, and a connection relationship of the jumper cable structure 200 and the optical coupling device in the detection apparatus 300.
Fig. 6 is a schematic structural diagram of another detection system provided in an embodiment of the present invention, as shown in fig. 6, the detection apparatus 300 includes: an optocoupler device 301 and a controller 302; a power supply end of the optical coupling device 301 is a power supply end of the detection apparatus 300, a signal input end of the optical coupling device 301 is a signal input end of the detection apparatus 300, and a ground end of the optical coupling device 301 is a ground end of the detection apparatus 300; a fourth resistor R4 is connected between the signal input terminal of the optocoupler 301 and a power supply terminal.
The PNP switch sensor 600 includes a second main circuit 601 and a PNP transistor 602, wherein a base of the PNP transistor 602 is connected to the second main circuit, a collector of the PNP transistor 602 is connected to an anode of the diode D1, and a cathode of the diode D1 is connected to an anode of the diode ZD2 and a signal output terminal of the PNP switch sensor 600, respectively; one end of an emitting electrode of the PNP type triode 602 is connected with the second main circuit 601, and the other end of the emitting electrode is respectively connected with the anode of the bidirectional transient suppression diode ZD2 and the power supply anode of the PNP type switch sensor 600; the second main circuit 601 is also connected to the negative power supply of the PNP type switching sensor 600. The diode D1 and the bidirectional transient suppression diode ZD2 have an overvoltage protection function.
The PNP type switch sensor 600 is connected to one end of the jumper cable structure 200, the other end of the jumper cable structure 200 is connected to one end of the pull-up circuit 603, and the other end of the pull-up circuit 603 is connected to a power supply terminal, a signal input terminal, and a ground terminal of the optocoupler 301. The controller 302 may be a Microcontroller Unit (MCU). The resistance of the third resistor R3 and the resistance of the first resistor R1 may be generally 1K Ω, the resistance of the fourth resistor R4 and the resistance of the third resistor R3 may be generally 10K Ω, and the power supply voltage at the power supply terminal of the optocoupler 301 is generally 12V or 24V.
When the resistance of the third resistor R3 in the jumper cable structure 200 is 1K Ω, the resistance of the fourth resistor R4 in the pull-up circuit 603 is 10K Ω, and the power supply voltage at the power supply terminal of the optocoupler device 301 is generally 12V or 24V. The PNP type switch sensor 600 is close to metal, the PNP type triode 602 can be turned on, and the signal input end of the optocoupler 301 is equivalent to the power supply end thereof, that is, the level of the signal input end is high level; the PNP switch sensor 600 is far away from the metal, the PNP transistor 602 is not turned on, and the third resistor R3 and the fourth resistor R4 divide the supply Voltage (VCC) output from the power supply terminal of the optocoupler 301. The voltage at the signal input terminal of the optocoupler 301 is V1 ═ VCC (R3/(R3+ R4)), i.e. equal to 1.1V or 2.2V, which is equivalent to the level input at the signal input terminal of the optocoupler 301 being low.
Alternatively, the first cable 101 and the second cable 102 have a welding point at different positions, and the third resistor R3 is connected through the welding points on the first cable 101 and the second cable 102; heat-shrinkable sleeves are respectively arranged outside the first cable 101, the second cable 102 and the third resistor R3; the patch cable structure 200 is a cable formed by heating, shrinking and fixing a heat shrinkable sleeve on the whole outer portion of the first cable 101, the second cable 102 and the third cable 103.
The heat-shrinkable sleeve can be also called as a heat-shrinkable protective sleeve, and is particularly added at welding points at two ends of the third resistor R3, so that the welding points can be prevented from being corroded and rusted; the single cable is provided with the heat-shrinkable sleeve, and the heat-shrinkable sleeve is finally added outside the whole cable, so that the heat-shrinkable sleeve not only has an insulating effect, but also can prevent corrosion, further the stability of the switching cable structure 200 is improved, and the detection equipment 300 can more accurately detect the signal state sent by the switch sensor 100.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A detection system, comprising: the device comprises a switch sensor, a change-over cable structure and detection equipment; the switching cable structure comprises three cables, wherein a first resistor is connected between the first cable and the second cable;
the switch sensor is an NPN switch sensor, the positive electrode of a power supply of the switch sensor is connected with one end of the first cable, the negative electrode of the power supply of the switch sensor is connected with one end of a third cable, and the signal output end of the switch sensor is connected with one end of the second cable;
the detection device is a pull-down detection circuit, the other end of the first cable is connected with a power supply end of the detection device, the other end of the second cable is connected with a signal input end of the detection device, and the other end of the third cable is connected with a grounding end of the detection device.
2. The detection system according to claim 1, wherein the detection apparatus comprises: an optocoupler device and a controller; the power supply end of the optical coupler device is the power supply end of the detection equipment, the signal input end of the optical coupler device is the signal input end of the detection equipment, and the grounding end of the optical coupler device is the grounding end of the detection equipment;
and a second resistor is connected between the signal input end of the optical coupler and the grounding end.
3. The detection system of claim 1, wherein the first cable and the second cable each have a weld at different locations; the first resistor is connected by solder joints on the first cable and the second cable.
4. A detection system according to any one of claims 1-3, characterised in that the first cable, the second cable and the first resistor are each provided with a heat shrink sleeve on the outside.
5. The detection system according to claim 4, wherein the jumper cable structure is an electric cable formed by heating, shrinking and fixing a heat shrinkable sleeve on the whole outer portion of the first cable, the second cable and the third cable.
6. A detection system, comprising: the device comprises a switch sensor, a change-over cable structure and detection equipment; the switching cable structure comprises three cables, wherein a third resistor is connected between the first cable and the second cable;
the switch sensor is a PNP type switch sensor, the positive electrode of a power supply of the switch sensor is connected with one end of a third cable, the negative electrode of the power supply of the switch sensor is connected with one end of a second cable, and the signal output end of the switch sensor is connected with one end of the first cable;
the detection device is a pull-up detection circuit, the other end of the first cable is connected with a signal input end of the detection device, the other end of the second cable is connected with a grounding end of the detection device, and the other end of the third cable is connected with a power supply end of the detection device.
7. The detection system according to claim 6, wherein the detection device comprises: an optocoupler device and a controller; the power supply end of the optical coupler device is the power supply end of the detection equipment, the signal input end of the optical coupler device is the signal input end of the detection equipment, and the grounding end of the optical coupler device is the grounding end of the detection equipment;
and a fourth resistor is connected between the power supply end and the signal input end of the optocoupler.
8. The detection system of claim 6, wherein the first cable and the second cable each have a weld at different locations; the third resistor is connected by solder joints on the first cable and the second cable.
9. The detection system according to any one of claims 6 to 8, wherein the first cable, the second cable and the third resistor are each provided externally with a heat shrink sleeve.
10. The detection system according to claim 9, wherein the jumper cable structure is an electric cable formed by heating, shrinking and fixing a heat shrinkable sleeve on the whole outer portion of the first cable, the second cable and the third cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021848098.3U CN212539207U (en) | 2020-08-28 | 2020-08-28 | Detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021848098.3U CN212539207U (en) | 2020-08-28 | 2020-08-28 | Detection system |
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| CN212539207U true CN212539207U (en) | 2021-02-12 |
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| CN202021848098.3U Active CN212539207U (en) | 2020-08-28 | 2020-08-28 | Detection system |
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2020
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