A residual current electrical fire monitoring detector testing device

Abstract

The application provides a residual current electrical fire monitoring detector testing device, belonging to the technical field of detector testing, and the testing device comprises a testing circuit board, spring probes, power input wiring terminals and alarm bus wiring terminals are arranged on the testing circuit board, the spring probes are connected with residual current testing channels, alarm bus channels and power input channels of the detector respectively; a plurality of mutual inductance coils, a plurality of open circuit switches and a plurality of short circuit switches are further arranged on the testing circuit board; each residual current testing channel corresponds to one mutual inductance coil, one open circuit switch and one short circuit switch; each mutual inductance coil is connected with one open circuit switch and one short circuit switch and then connected to one residual current testing channel of the detector, and is used for open circuit state and short circuit state testing of the detector. Through the cooperative control of the short circuit switches and the open circuit switches, the function verification of all channels of the detector can be completed, and the testing time is greatly shortened.

Description

Technical Field

[0001] This utility model belongs to the field of detector testing technology, and in particular relates to a residual current type electrical fire monitoring detector testing device. Background Technology

[0002] Electrical fires not only cause huge economic losses, but more importantly, they threaten people's lives. In order to strengthen the prevention of electrical fires, electrical fire monitoring detectors have been developed.

[0003] Electrical fire monitoring detectors predict the likelihood of a fire by detecting the magnitude of leakage current and the temperature of conductors in real time.

[0004] Before leaving the factory, electrical fire monitoring detectors need to undergo functional testing to ensure their performance.

[0005] The combined electrical fire detector test box disclosed in application number 202022677513.X contains only one switch that simultaneously controls multiple relays to test multiple channels. It cannot test each test channel separately and cannot accurately identify which channel of the detector product has a problem.

[0006] Therefore, this utility model provides a test device for residual current type electrical fire monitoring detector. Utility Model Content

[0007] This invention provides a residual current type electrical fire monitoring detector testing device, which at least solves the problem in the prior art that only one switch controls multiple relays to test multiple channels, and cannot test each test channel separately, and cannot accurately identify which channel of the detector product has a problem.

[0008] The residual current type electrical fire monitoring detector testing device includes: a test housing, on which a test circuit board is disposed, the test circuit board fixing and limiting the detector by a fixing component, the test circuit board being provided with spring probes, power input terminals and alarm bus terminals, the spring probes being connected to the detector's residual current test channel, alarm bus channel and power input channel respectively; the test circuit board is also provided with several mutual inductance coils, several open circuit switches and several short circuit switches;

[0009] Each residual current test channel corresponds to a mutual inductor, an open circuit switch, and a short circuit switch;

[0010] Each mutual inductor coil is connected to an open-circuit switch and a short-circuit switch, respectively, and then connected to a residual current test channel of the detector for testing the open-circuit and short-circuit states of the detector.

[0011] Furthermore, the first terminal of each open circuit switch is connected to the first terminal of its corresponding mutual inductance coil;

[0012] The second terminal of each open circuit switch is connected to the second terminal of its corresponding residual current test channel;

[0013] The second end of each mutual inductor coil is connected to the first end of its corresponding residual current test channel.

[0014] When the first and second terminals of the open circuit switch are disconnected, the corresponding residual current test channel is open. When the first and second terminals of the open circuit switch are connected, the corresponding residual current test channel returns to normal monitoring status, and the open circuit fault is resolved.

[0015] When the two ends of each open circuit switch are respectively opened and closed, the open circuit and open circuit fault recovery tests of each residual current test channel of the corresponding detector are performed. The open circuit test of each residual current test channel of the detector can be completed by closing and opening the open circuit switch.

[0016] Furthermore, the first terminal of each short-circuit switch is connected to the first terminal of its corresponding residual current test channel;

[0017] The second terminal of each short-circuit switch is connected to the second terminal of its corresponding residual current test channel.

[0018] When the first and second terminals of the short-circuit switch are connected, the corresponding residual current test channel is short-circuited. When the first and second terminals of the short-circuit switch are disconnected, the corresponding residual current test channel returns to normal monitoring status, and the short-circuit fault is resolved.

[0019] When the two ends of each short-circuit switch are connected and disconnected respectively, short-circuit and short-circuit fault recovery tests are performed on each residual current test channel of the corresponding detector. The short-circuit test of each residual current test channel of the detector can be completed by closing and opening the short-circuit switches.

[0020] Furthermore, there are eight open-circuit switches, eight short-circuit switches, and eight mutual inductance coils, each corresponding to one of the eight residual current test channels of the detector.

[0021] Furthermore, the eight open circuit switches are open circuit switch K1, open circuit switch K2, open circuit switch K3, open circuit switch K4, open circuit switch K5, open circuit switch K6, open circuit switch K7, and open circuit switch K8;

[0022] The eight mutual inductors are U1, U2, U3, U4, U5, U6, U7, and U8.

[0023] The first end of the open circuit switch K1 is connected to the first end of the mutual inductance coil U1, and the second end of the open circuit switch K1 is connected to the second end of the first residual current test channel of the detector. The second end of the mutual inductance coil U1 is connected to the first end of the first residual current test channel of the detector.

[0024] The first end of the open circuit switch K2 is connected to the first end of the mutual inductance coil U2, the second end of the open circuit switch K2 is connected to the second end of the second residual current test channel of the detector, and the second end of the mutual inductance coil U2 is connected to the first end of the second residual current test channel of the detector.

[0025] The first end of the open circuit switch K3 is connected to the first end of the mutual inductance coil U3, the second end of the open circuit switch K3 is connected to the second end of the third residual current test channel of the detector, and the second end of the mutual inductance coil U3 is connected to the first end of the third residual current test channel of the detector.

[0026] The first end of the open circuit switch K4 is connected to the first end of the mutual inductance coil U4, the second end of the open circuit switch K4 is connected to the second end of the fourth residual current test channel of the detector, and the second end of the mutual inductance coil U4 is connected to the first end of the fourth residual current test channel of the detector.

[0027] The first end of the open circuit switch K5 is connected to the first end of the mutual inductance coil U5, the second end of the open circuit switch K5 is connected to the second end of the fifth residual current test channel of the detector, and the second end of the mutual inductance coil U5 is connected to the first end of the fifth residual current test channel of the detector.

[0028] The first end of the open circuit switch K6 is connected to the first end of the mutual inductance coil U6, the second end of the open circuit switch K6 is connected to the second end of the sixth residual current test channel of the detector, and the second end of the mutual inductance coil U6 is connected to the first end of the sixth residual current test channel of the detector.

[0029] The first end of the open circuit switch K7 is connected to the first end of the mutual inductance coil U7, the second end of the open circuit switch K7 is connected to the second end of the seventh residual current test channel of the detector, and the second end of the mutual inductance coil U7 is connected to the first end of the seventh residual current test channel of the detector.

[0030] The first end of the open circuit switch K8 is connected to the first end of the mutual inductance coil U8, the second end of the open circuit switch K8 is connected to the second end of the eighth residual current test channel of the detector, and the second end of the mutual inductance coil U8 is connected to the first end of the eighth residual current test channel of the detector.

[0031] Furthermore, the eight short-circuit switches are short-circuit switch D1, short-circuit switch D2, short-circuit switch D3, short-circuit switch D4, short-circuit switch D5, short-circuit switch D6, short-circuit switch D7, and short-circuit switch D8.

[0032] The first terminal of short-circuit switch D1 is connected to the first terminal of the first residual current test channel of the detector, and the second terminal of short-circuit switch D1 is connected to the second terminal of the first residual current test channel of the detector.

[0033] The first terminal of short-circuit switch D2 is connected to the first terminal of the second residual current test channel of the detector, and the second terminal of short-circuit switch D2 is connected to the second terminal of the second residual current test channel of the detector.

[0034] The first terminal of short-circuit switch D3 is connected to the first terminal of the third residual current test channel of the detector, and the second terminal of short-circuit switch D3 is connected to the second terminal of the third residual current test channel of the detector.

[0035] The first terminal of short-circuit switch D4 is connected to the first terminal of the fourth residual current test channel of the detector, and the second terminal of short-circuit switch D4 is connected to the second terminal of the fourth residual current test channel of the detector.

[0036] The first terminal of short-circuit switch D5 is connected to the first terminal of the fifth residual current test channel of the detector, and the second terminal of short-circuit switch D5 is connected to the second terminal of the fifth residual current test channel of the detector.

[0037] The first terminal of short-circuit switch D6 is connected to the first terminal of the sixth residual current test channel of the detector, and the second terminal of short-circuit switch D6 is connected to the second terminal of the sixth residual current test channel of the detector.

[0038] The first terminal of short-circuit switch D7 is connected to the first terminal of the seventh residual current test channel of the detector, and the second terminal of short-circuit switch D7 is connected to the second terminal of the seventh residual current test channel of the detector.

[0039] The first terminal of the short-circuit switch D8 is connected to the first terminal of the eighth residual current test channel of the detector, and the second terminal of the short-circuit switch D8 is connected to the second terminal of the eighth residual current test channel of the detector.

[0040] Furthermore, the power input terminal's power pin N is connected to the detector's power pin N, and the power input terminal's power pin L is connected to the detector's power pin L.

[0041] Furthermore, pin B+ of the alarm bus terminal is connected to pin B+ of the detector's alarm bus, and pin B- of the alarm bus terminal is connected to pin B- of the detector's alarm bus.

[0042] As can be seen from the above technical solutions, this utility model has the following advantages:

[0043] The residual current type electrical fire monitoring detector testing device provided in this application eliminates the need for cumbersome wiring disconnection during testing. By controlling the open circuit switch and short circuit switch, fault scenarios such as open circuit and short circuit can be generated with one click. The testing device can complete the verification of all channels of the detector by adjusting the dedicated test power supply and coordinating the control of 8 short circuit switches and 8 open circuit switches, which greatly shortens the testing time and directly reduces the labor cost in the detector inspection process. Attached Figure Description

[0044] To more clearly illustrate the technical solution of this application, the accompanying drawings used in the description will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0045] Figure 1 This is a schematic diagram of the structure of a residual current type electrical fire monitoring detector test device in the embodiment.

[0046] Figure 2 This is a circuit diagram of a test circuit board for a residual current type electrical fire monitoring detector test device in an embodiment.

[0047] Reference numerals: 1-Detector, 2-Fixing component, 3-Spring probe, 4-Open circuit switch, 5-Mutual inductance coil, 6-Power input terminal, 7-Alarm bus terminal, 8-Short circuit switch. Detailed Implementation

[0048] To make the purpose, features, and advantages of this application more apparent and understandable, specific embodiments and accompanying drawings will be used to clearly and completely describe the technical solution protected by this application. Obviously, the embodiments described below are only some embodiments of this application, and not all embodiments. Based on the embodiments in this patent, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this patent.

[0049] In the following detailed description of a residual current type electrical fire monitoring detector test apparatus, various embodiments of this disclosure will be described more fully. This disclosure may have various embodiments, and adjustments and changes may be made therein. However, it should be understood that there is no intention to limit the various embodiments of this disclosure to the specific embodiments disclosed herein, but rather this disclosure should be understood to cover all adjustments, equivalents, and / or alternatives falling within the spirit and scope of the various embodiments of this disclosure.

[0050] In the following, the terms “comprising” or “may include”, which may be used in various embodiments of this disclosure, indicate the presence of the disclosed functions, operations, or elements, and do not limit the addition of one or more functions, operations, or elements. Furthermore, as used in various embodiments of this disclosure, the terms “comprising,” “having,” and their cognates are intended only to indicate a particular feature, number, step, operation, element, component, or combination of the foregoing, and should not be construed as primarily excluding the presence of one or more other features, numbers, steps, operations, elements, components, or combinations of the foregoing, or the possibility of adding one or more combinations of the foregoing.

[0051] In various embodiments of this disclosure, the expression "or" or "at least one of A and / or B" includes any combination or all combinations of the words listed simultaneously. For example, the expression "A or B" or "at least one of A and / or B" may include A, may include B, or may include both A and B.

[0052] The terms used in the various embodiments of this disclosure (such as "first," "second," etc.) may modify various components in the various embodiments, but do not limit the corresponding components. For example, the above terms do not limit the order and / or importance of the components. The above terms are only used for the purpose of distinguishing one component from others. For example, a first user device and a second user device refer to different user devices, although both are user devices. For example, a first component may be referred to as a second component without departing from the scope of the various embodiments of this disclosure, and similarly, a second component may also be referred to as a first component.

[0053] It should be noted that if a description is made of "connecting" one component to another, then the first component can be directly connected to the second component, and a third component can be "connected" between the first and second components. Conversely, when a component is "directly connected" to another component, it can be understood that there is no third component between the first and second components.

[0054] The term "user" as used in various embodiments of this disclosure may refer to a person using an electronic device, and may be a monitoring person, a testing person, or an operator.

[0055] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0056] This application provides a residual current type electrical fire monitoring detector testing device, which solves the current technical problem that urgently needs a device that can simultaneously control multiple relays to test multiple channels with only one switch, but cannot test each test channel separately, and cannot accurately identify which channel of the detector product has a problem.

[0057] The technical solutions proposed in the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0058] Figure 1 This is a structural diagram of a residual current type electrical fire monitoring detector testing device provided in an embodiment of this application. Figure 1 As shown in the embodiment of this application, a residual current type electrical fire monitoring detector testing device is provided. The testing device includes: a test housing, on which a test circuit board is disposed. The test circuit board fixes and limits the detector 1 through a fixing component 2. The test circuit board is provided with a spring probe 3, a power input terminal 6, and an alarm bus terminal 7. The spring probe 3 is connected to the detector's residual current test channel, alarm bus channel, and power input channel, respectively. The test circuit board is also provided with a plurality of mutual inductance coils 5, a plurality of open circuit switches 4, and a plurality of short circuit switches 8.

[0059] Each residual current test channel corresponds to a mutual inductance coil 5, an open circuit switch 4, and a short circuit switch 8;

[0060] Each mutual inductor coil 5 is connected to an open circuit switch 4 and a short circuit switch 8, respectively, and then connected to a residual current test channel of the detector for testing the open circuit and short circuit states of the detector.

[0061] Based on the above embodiments, in order to further improve the residual current type electrical fire monitoring detector test device provided in the above embodiments, in one embodiment, the first end of each open circuit switch 4 is connected to the first end of its corresponding mutual inductance coil 5.

[0062] The second terminal of each open circuit switch 4 is connected to the second terminal of its corresponding residual current test channel.

[0063] The second end of each mutual inductance coil 5 is connected to the first end of its corresponding residual current test channel.

[0064] When the first and second terminals of the open circuit switch 4 are disconnected, the corresponding residual current test channel is open. When the first and second terminals of the open circuit switch 4 are connected, the corresponding residual current test channel returns to normal monitoring status, and the open circuit fault is resolved.

[0065] When the two ends of each open circuit switch 4 are respectively opened and closed, the open circuit and open circuit fault recovery tests of each residual current test channel of the corresponding detector are performed. The open circuit test of each residual current test channel of the detector can be completed by closing and opening the open circuit switch 4.

[0066] In one exemplary embodiment, eight open-circuit switches 4, eight short-circuit switches 8, and eight mutual inductance coils 5 are provided, each corresponding to one of the eight residual current test channels of the detector.

[0067] For example, the eight open circuit switches are open circuit switch K1, open circuit switch K2, open circuit switch K3, open circuit switch K4, open circuit switch K5, open circuit switch K6, open circuit switch K7, and open circuit switch K8;

[0068] The eight mutual inductors are U1, U2, U3, U4, U5, U6, U7, and U8.

[0069] The first end of the open circuit switch K1 is connected to the first end of the mutual inductance coil U1, and the second end of the open circuit switch K1 is connected to the second end of the first residual current test channel of the detector. The second end of the mutual inductance coil U1 is connected to the first end of the first residual current test channel of the detector.

[0070] When the first and second terminals of the open circuit switch K1 are disconnected, the first residual current test channel of the corresponding detector is open. When the first and second terminals of the open circuit switch K1 are connected, the first residual current test channel of the corresponding detector returns to the normal monitoring state, and the open circuit fault is restored.

[0071] The first end of the open circuit switch K2 is connected to the first end of the mutual inductance coil U2, the second end of the open circuit switch K2 is connected to the second end of the second residual current test channel of the detector, and the second end of the mutual inductance coil U2 is connected to the first end of the second residual current test channel of the detector.

[0072] When the first and second terminals of the open circuit switch K2 are disconnected, the second residual current test channel of the corresponding detector is open. When the first and second terminals of the open circuit switch K2 are connected, the second residual current test channel of the corresponding detector returns to the normal monitoring state, and the open circuit fault is restored.

[0073] The first end of the open circuit switch K3 is connected to the first end of the mutual inductance coil U3, the second end of the open circuit switch K3 is connected to the second end of the third residual current test channel of the detector, and the second end of the mutual inductance coil U3 is connected to the first end of the third residual current test channel of the detector.

[0074] When the first and second terminals of the open circuit switch K3 are disconnected, the third residual current test channel of the corresponding detector is open. When the first and second terminals of the open circuit switch K3 are connected, the third residual current test channel of the corresponding detector returns to normal monitoring status, and the open circuit fault is resolved.

[0075] The first end of the open circuit switch K4 is connected to the first end of the mutual inductance coil U4, the second end of the open circuit switch K4 is connected to the second end of the fourth residual current test channel of the detector, and the second end of the mutual inductance coil U4 is connected to the first end of the fourth residual current test channel of the detector.

[0076] When the first and second terminals of the open circuit switch K4 are disconnected, the fourth residual current test channel of the corresponding detector is open. When the first and second terminals of the open circuit switch K4 are connected, the fourth residual current test channel of the corresponding detector returns to normal monitoring status, and the open circuit fault is resolved.

[0077] The first end of the open circuit switch K5 is connected to the first end of the mutual inductance coil U5, the second end of the open circuit switch K5 is connected to the second end of the fifth residual current test channel of the detector, and the second end of the mutual inductance coil U5 is connected to the first end of the fifth residual current test channel of the detector.

[0078] When the first and second terminals of the open circuit switch K5 are disconnected, the fifth residual current test channel of the corresponding detector is open. When the first and second terminals of the open circuit switch K5 are connected, the fifth residual current test channel of the corresponding detector returns to the normal monitoring state, and the open circuit fault is resolved.

[0079] The first end of the open circuit switch K6 is connected to the first end of the mutual inductance coil U6, the second end of the open circuit switch K6 is connected to the second end of the sixth residual current test channel of the detector, and the second end of the mutual inductance coil U6 is connected to the first end of the sixth residual current test channel of the detector.

[0080] When the first and second terminals of the open circuit switch K6 are disconnected, the sixth residual current test channel of the corresponding detector is open. When the first and second terminals of the open circuit switch K6 are connected, the sixth residual current test channel of the corresponding detector returns to the normal monitoring state, and the open circuit fault is restored.

[0081] The first end of the open circuit switch K7 is connected to the first end of the mutual inductance coil U7, the second end of the open circuit switch K7 is connected to the second end of the seventh residual current test channel of the detector, and the second end of the mutual inductance coil U7 is connected to the first end of the seventh residual current test channel of the detector.

[0082] When the first and second terminals of the open circuit switch K7 are disconnected, the seventh residual current test channel of the corresponding detector is open. When the first and second terminals of the open circuit switch K7 are connected, the seventh residual current test channel of the corresponding detector returns to the normal monitoring state, and the open circuit fault is resolved.

[0083] The first end of the open circuit switch K8 is connected to the first end of the mutual inductance coil U8, the second end of the open circuit switch K8 is connected to the second end of the eighth residual current test channel of the detector, and the second end of the mutual inductance coil U8 is connected to the first end of the eighth residual current test channel of the detector.

[0084] When the first and second terminals of the open circuit switch K8 are disconnected, the eighth residual current test channel of the corresponding detector is open. When the first and second terminals of the open circuit switch K8 are connected, the eighth residual current test channel of the corresponding detector returns to normal monitoring status, and the open circuit fault is resolved.

[0085] When the two ends of each open circuit switch are respectively opened and closed, the open circuit and open circuit fault recovery tests of each residual current test channel of the corresponding detector are performed. The open circuit test of each residual current test channel of the detector can be completed by closing and opening the open circuit switch.

[0086] Furthermore, as a refinement and extension of the specific implementation of the above embodiments, in order to fully illustrate the specific implementation process in this embodiment, another residual current type electrical fire monitoring detector test device is provided, wherein the first end of each short-circuit switch 8 is connected to the first end of its corresponding residual current test channel.

[0087] The second terminal of the short-circuit switch 8 is connected to the second terminal of its corresponding residual current test channel.

[0088] When the first and second terminals of short-circuit switch 8 are connected, the corresponding residual current test channel is short-circuited. When the first and second terminals of short-circuit switch 8 are disconnected, the corresponding residual current test channel returns to normal monitoring status, and the short-circuit fault is restored.

[0089] When the two ends of each short-circuit switch 8 are connected and disconnected respectively, short-circuit and short-circuit fault recovery tests are performed on each residual current test channel of the corresponding detector. The short-circuit test of each residual current test channel of the detector can be completed by closing and opening the short-circuit switch 8.

[0090] According to another embodiment of the present invention, the eight short-circuit switches are short-circuit switch D1, short-circuit switch D2, short-circuit switch D3, short-circuit switch D4, short-circuit switch D5, short-circuit switch D6, short-circuit switch D7, and short-circuit switch D8.

[0091] The first terminal of short-circuit switch D1 is connected to the first terminal of the first residual current test channel of the detector, and the second terminal of short-circuit switch D1 is connected to the second terminal of the first residual current test channel of the detector.

[0092] When the first and second terminals of short-circuit switch D1 are connected, the first residual current test channel of the corresponding detector is short-circuited. When the first and second terminals of short-circuit switch D1 are disconnected, the first residual current test channel of the corresponding detector returns to normal monitoring status, and the short-circuit fault is restored.

[0093] The first terminal of short-circuit switch D2 is connected to the first terminal of the second residual current test channel of the detector, and the second terminal of short-circuit switch D2 is connected to the second terminal of the second residual current test channel of the detector.

[0094] When the first and second terminals of short-circuit switch D2 are connected, the second residual current test channel of the corresponding detector is short-circuited. When the first and second terminals of short-circuit switch D2 are disconnected, the second residual current test channel of the corresponding detector returns to normal monitoring status, and the short-circuit fault is restored.

[0095] The first terminal of short-circuit switch D3 is connected to the first terminal of the third residual current test channel of the detector, and the second terminal of short-circuit switch D3 is connected to the second terminal of the third residual current test channel of the detector.

[0096] When the first and second terminals of short-circuit switch D3 are connected, the third residual current test channel of the corresponding detector is short-circuited. When the first and second terminals of short-circuit switch D3 are disconnected, the third residual current test channel of the corresponding detector returns to normal monitoring status, and the short-circuit fault is resolved.

[0097] The first terminal of short-circuit switch D4 is connected to the first terminal of the fourth residual current test channel of the detector, and the second terminal of short-circuit switch D4 is connected to the second terminal of the fourth residual current test channel of the detector.

[0098] When the first and second terminals of short-circuit switch D4 are connected, the fourth residual current test channel of the corresponding detector is short-circuited. When the first and second terminals of short-circuit switch D4 are disconnected, the fourth residual current test channel of the corresponding detector returns to normal monitoring status, and the short-circuit fault is resolved.

[0099] The first terminal of short-circuit switch D5 is connected to the first terminal of the fifth residual current test channel of the detector, and the second terminal of short-circuit switch D5 is connected to the second terminal of the fifth residual current test channel of the detector.

[0100] When the first and second terminals of short-circuit switch D5 are connected, the fifth residual current test channel of the corresponding detector is short-circuited. When the first and second terminals of short-circuit switch D5 are disconnected, the fifth residual current test channel of the corresponding detector returns to normal monitoring status, and the short-circuit fault is resolved.

[0101] The first terminal of short-circuit switch D6 is connected to the first terminal of the sixth residual current test channel of the detector, and the second terminal of short-circuit switch D6 is connected to the second terminal of the sixth residual current test channel of the detector.

[0102] When the first and second terminals of short-circuit switch D6 are connected, the sixth residual current test channel of the corresponding detector is short-circuited. When the first and second terminals of short-circuit switch D6 are disconnected, the sixth residual current test channel of the corresponding detector returns to normal monitoring status, and the short-circuit fault is resolved.

[0103] The first terminal of short-circuit switch D7 is connected to the first terminal of the seventh residual current test channel of the detector, and the second terminal of short-circuit switch D7 is connected to the second terminal of the seventh residual current test channel of the detector.

[0104] When the first and second terminals of short-circuit switch D7 are connected, the seventh residual current test channel of the corresponding detector is short-circuited. When the first and second terminals of short-circuit switch D7 are disconnected, the seventh residual current test channel of the corresponding detector returns to normal monitoring status, and the short-circuit fault is resolved.

[0105] The first terminal of short-circuit switch D8 is connected to the first terminal of the eighth residual current test channel of the detector, and the second terminal of short-circuit switch D8 is connected to the second terminal of the eighth residual current test channel of the detector.

[0106] When the first and second terminals of short-circuit switch D8 are connected, the eighth residual current test channel of the corresponding detector is short-circuited. When the first and second terminals of short-circuit switch D8 are disconnected, the eighth residual current test channel of the corresponding detector returns to normal monitoring status, and the short-circuit fault is resolved.

[0107] When the two ends of each short-circuit switch are connected and disconnected respectively, short-circuit and short-circuit fault recovery tests are performed on each residual current test channel of the corresponding detector. The short-circuit test of each residual current test channel of the detector can be completed by closing and opening the short-circuit switches.

[0108] As an example, the power input terminal 6 has its power pin N connected to the detector's power pin N, and its power input terminal 6 has its power pin L connected to the detector's power pin L.

[0109] In one exemplary embodiment, pin B+ of alarm bus terminal 7 is connected to pin B+ of alarm bus of detector, and pin B- of alarm bus terminal 7 is connected to pin B- of alarm bus of detector.

[0110] Alarm test: The current input line passes through the mutual inductance coil 5 and is connected to the test power supply. The test power supply provides the current required for the alarm value to the current input line to test whether the leakage current alarm function of the detector product is normal.

[0111] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0112] For those skilled in the art, designing different forms of control circuits based on the teachings of this invention does not require creative effort. Changes, modifications, substitutions, and variations made to the embodiments without departing from the principles and spirit of this invention still fall within the protection scope of this invention.

Claims

1. A testing device for a residual current type electrical fire monitoring detector, the testing device comprising: The test housing contains a test circuit board. The test circuit board fixes and limits the detector (1) through a fixing component (2). The test circuit board is provided with a spring probe (3), a power input terminal (6), and an alarm bus terminal (7). The spring probe (3) is connected to the detector's residual current test channel, alarm bus channel, and power input channel, respectively. The test circuit board is characterized by having several mutual inductance coils (5), several open circuit switches (4), and several short circuit switches (8). Each residual current test channel corresponds to a mutual inductance coil (5), an open circuit switch (4), and a short circuit switch (8); Each mutual inductor coil (5) is connected to an open circuit switch (4) and a short circuit switch (8) respectively, and then connected to a residual current test channel of the detector for testing the open circuit and short circuit states of the detector.

2. The residual current type electrical fire monitoring detector testing device as described in claim 1, characterized in that, The first terminal of each open circuit switch (4) is connected to the first terminal of its corresponding mutual inductance coil (5); The second terminal of each open circuit switch (4) is connected to the second terminal of its corresponding residual current test channel; The second end of each mutual inductance coil (5) is connected to the first end of its corresponding residual current test channel.

3. The residual current type electrical fire monitoring detector testing device as described in claim 1, characterized in that, The first terminal of each short-circuit switch (8) is connected to the first terminal of its corresponding residual current test channel; The second end of the short-circuit switch (8) is connected to the second end of its corresponding residual current test channel.

4. The residual current type electrical fire monitoring detector testing device as described in any one of claims 1-3, characterized in that, The open circuit switch (4), short circuit switch (8), and mutual inductance coil (5) are each provided with eight, which correspond to the eight residual current test channels of the detector.

5. The residual current type electrical fire monitoring detector testing device as described in claim 4, characterized in that, The eight open circuit switches are K1, K2, K3, K4, K5, K6, K7, and K8. The eight mutual inductors are U1, U2, U3, U4, U5, U6, U7, and U8. The first end of the open circuit switch K1 is connected to the first end of the mutual inductance coil U1, and the second end of the open circuit switch K1 is connected to the second end of the first residual current test channel of the detector. The second end of the mutual inductance coil U1 is connected to the first end of the first residual current test channel of the detector. The first end of the open circuit switch K2 is connected to the first end of the mutual inductance coil U2, the second end of the open circuit switch K2 is connected to the second end of the second residual current test channel of the detector, and the second end of the mutual inductance coil U2 is connected to the first end of the second residual current test channel of the detector. The first end of the open circuit switch K3 is connected to the first end of the mutual inductance coil U3, the second end of the open circuit switch K3 is connected to the second end of the third residual current test channel of the detector, and the second end of the mutual inductance coil U3 is connected to the first end of the third residual current test channel of the detector. The first end of the open circuit switch K4 is connected to the first end of the mutual inductance coil U4, the second end of the open circuit switch K4 is connected to the second end of the fourth residual current test channel of the detector, and the second end of the mutual inductance coil U4 is connected to the first end of the fourth residual current test channel of the detector. The first end of the open circuit switch K5 is connected to the first end of the mutual inductance coil U5, the second end of the open circuit switch K5 is connected to the second end of the fifth residual current test channel of the detector, and the second end of the mutual inductance coil U5 is connected to the first end of the fifth residual current test channel of the detector. The first end of the open circuit switch K6 is connected to the first end of the mutual inductance coil U6, the second end of the open circuit switch K6 is connected to the second end of the sixth residual current test channel of the detector, and the second end of the mutual inductance coil U6 is connected to the first end of the sixth residual current test channel of the detector. The first end of the open circuit switch K7 is connected to the first end of the mutual inductance coil U7, the second end of the open circuit switch K7 is connected to the second end of the seventh residual current test channel of the detector, and the second end of the mutual inductance coil U7 is connected to the first end of the seventh residual current test channel of the detector. The first end of the open circuit switch K8 is connected to the first end of the mutual inductance coil U8, the second end of the open circuit switch K8 is connected to the second end of the eighth residual current test channel of the detector, and the second end of the mutual inductance coil U8 is connected to the first end of the eighth residual current test channel of the detector.

6. The residual current type electrical fire monitoring detector testing device as described in claim 4, characterized in that, The eight short-circuit switches are short-circuit switch D1, short-circuit switch D2, short-circuit switch D3, short-circuit switch D4, short-circuit switch D5, short-circuit switch D6, short-circuit switch D7, and short-circuit switch D8. The first terminal of short-circuit switch D1 is connected to the first terminal of the first residual current test channel of the detector, and the second terminal of short-circuit switch D1 is connected to the second terminal of the first residual current test channel of the detector. The first terminal of short-circuit switch D2 is connected to the first terminal of the second residual current test channel of the detector, and the second terminal of short-circuit switch D2 is connected to the second terminal of the second residual current test channel of the detector. The first terminal of short-circuit switch D3 is connected to the first terminal of the third residual current test channel of the detector, and the second terminal of short-circuit switch D3 is connected to the second terminal of the third residual current test channel of the detector. The first terminal of short-circuit switch D4 is connected to the first terminal of the fourth residual current test channel of the detector, and the second terminal of short-circuit switch D4 is connected to the second terminal of the fourth residual current test channel of the detector. The first terminal of short-circuit switch D5 is connected to the first terminal of the fifth residual current test channel of the detector, and the second terminal of short-circuit switch D5 is connected to the second terminal of the fifth residual current test channel of the detector. The first terminal of short-circuit switch D6 is connected to the first terminal of the sixth residual current test channel of the detector, and the second terminal of short-circuit switch D6 is connected to the second terminal of the sixth residual current test channel of the detector. The first terminal of short-circuit switch D7 is connected to the first terminal of the seventh residual current test channel of the detector, and the second terminal of short-circuit switch D7 is connected to the second terminal of the seventh residual current test channel of the detector. The first terminal of short-circuit switch D8 is connected to the first terminal of the eighth residual current test channel of the detector, and the second terminal of short-circuit switch D8 is connected to the second terminal of the eighth residual current test channel of the detector.

7. The residual current type electrical fire monitoring detector testing device as described in claim 6, characterized in that, The power input terminal (6) has its power pin N connected to the power pin N of the detector, and its power input terminal (6) has its power pin L connected to the power pin L of the detector.

8. The residual current type electrical fire monitoring detector testing device as described in claim 7, characterized in that, The pin B+ of the alarm bus terminal (7) is connected to the alarm bus pin B+ of the detector, and the pin B- of the alarm bus terminal (7) is connected to the alarm bus pin B- of the detector.

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