CN114113705B - Diode terminal strip with self-detection fault state and detection circuit thereof - Google Patents
Diode terminal strip with self-detection fault state and detection circuit thereof Download PDFInfo
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- CN114113705B CN114113705B CN202111396876.9A CN202111396876A CN114113705B CN 114113705 B CN114113705 B CN 114113705B CN 202111396876 A CN202111396876 A CN 202111396876A CN 114113705 B CN114113705 B CN 114113705B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
Abstract
The application provides a diode terminal strip with a self-detection fault state and a detection circuit thereof, wherein the detection circuit comprises a test unit, a current limiting resistor and a prompt unit; the traditional diode terminal strip is changed into electrical equipment with a self-detection function, internal control logic is added, and the implementation of the self-detection function is matched by adding the internal detection logic; an increase prompting unit: a prompting unit is added to diagnose whether the diode terminal strip is in a normal working state or not; through the technical scheme, the beneficial effects brought by the application are mainly represented by the following points: (1) Visual detection of normal state and fault state of the diode terminal strip; (2) When the method is applied to control of the vehicle, a convenient means is provided for overhauling the vehicle, and the integrity of the control function of the vehicle and the timeliness of departure operation on the next day are ensured; (3) When the method is applied to control of the vehicle, timeliness and accuracy of troubleshooting of the vehicle caused by failure of the control function of the vehicle are improved.
Description
Technical Field
The application relates to the technical field of circuit detection, in particular to a diode terminal strip with a self-detection fault state and a detection circuit thereof.
Background
Urban rail metro vehicles are increasingly favored by urban and local citizens so far, and the urban rail metro vehicles become an important component of bright business cards and urban traffic of the cities; urban rail metro vehicles are used as infrastructure services for building a benefit to citizens for adapting to the development needs of large and medium cities, and are used as important components of road traffic construction of China to continuously exert the value of the urban rail metro vehicles so as to promote the development and progress of society; in the process of developing low-carbon traffic, the role played by urban metro vehicles is really compliant with the trend of the times development, and the urban metro vehicles play a huge role in large cities due to the advantages of rapidness, punctuality, low energy consumption, large bearing capacity and the like, and simultaneously play an important role in relieving ground traffic pressure, so that various choices are provided for travel of common people.
Because the urban rail metro vehicle has great significance, the stability and the safety of the control function are particularly important, and although the urban rail metro vehicle at the present stage mostly introduces network control, the hard wire circuit has extremely high reliability and maintainability, so that the functions of traction, braking, control and the like are realized by adopting the hard wire circuit in the vehicle electrical design; in the design process of a vehicle control circuit (such as a vehicle activation circuit, a cab occupation circuit, a pantograph control circuit, a vehicle control command circuit, an emergency safety line changing circuit and the like), in order to ensure that a head-tail vehicle or other logic commands are not connected in series into the circuit function, a large number of isolating and unidirectional conducting devices such as photosensitive sensors and diodes are often used, but the devices are often direct causes of faults, so that the logic of the circuit is disordered, and the faults are extremely difficult to find due to the complexity of fault phenomena.
To better illustrate the deficiencies and problems of the prior art, the following is a specific example:
at present, a large number of diode terminal rows taking diodes as core elements are applied to a control circuit (DC 110V voltage class) of a metro vehicle in a city rail, the control circuit of the vehicle penetrates through the whole vehicle in a wiring mode, and a specific control cable is connected to input and output through the diode terminal rows; as can be seen from fig. 5, the core device diode element 16 is solderedThe terminal strip is connected inside the terminal strip, the upper end is positive, the lower end is negative, the upper part of the terminal strip is provided with two diode positive connection points, the lower part is provided with two diode negative connection points, and the applicable wire diameter is 2.5mm 2 The following cables are wired, and rated working voltage and working current are DC110V and 1A; the electrical schematic diagram is shown in fig. 1, and the practical circuit diagram is shown in fig. 2.
Fig. 2 is a partial diagram of a command circuit of a driver controller of a metro vehicle, wherein a plurality of diode devices such as a diode 2, a diode 3 and a diode 4 are applied in different command circuits, and are connected in a mode of diode terminal rows in actual wiring; for example, the circuit formed by the lines 92, 112 and 113 is a brake system command circuit, and the diode 4 between the lines 112 and 113 is used for preventing the DC110V+ electric string of other circuits from being electrically isolated and the current direction is unique in the circuit connected with the line 92.
The physical diagram of the diode terminal CDT4 shown in fig. 5 is that the diode terminal CDT4 fails in the actual running process of the vehicle, and the abnormal function of the vehicle cannot be found in time, so that the normal running of the vehicle cannot be realized.
The vehicle runs well on the first day, and no abnormal condition exists in the overhaul of the return section; the next day the vehicle is electrified and ready for delivery, and the situation that the emergency braking is applied without any reason after the trend of the vehicle just moves is found after the cab 1 is activated, eases the emergency braking and pushes the traction motor vehicle is also the same for multiple attempts; the same operation is carried out by changing the vehicle to the cab 2, the vehicle runs normally, the unexpected fault state makes the staff's think about the fault state not be solved, the operation pressure is huge, the fault cause can not be timely checked on site, the vehicle can only be maintained in a warehouse to be operated, and the operation departure plan of the whole day is disturbed; through investigation, the diode terminal 4 of the cab 2 is burnt, so that the directional conduction function of the cab is invalid, DC110V+ electricity which is connected to the same circuit of the cab 2 from the cab 1 is led to pass through the diode 4 which is equivalent to a conductor, and then passes through the No. 92 wire, the pilot controller (DMC), the No. 97 wire and the No. 98 wire, finally, the pilot controller is enabled to obtain electricity in the direction of a 0-bit relay (NEUR), and the normally closed contact of the pilot controller which is connected in series with the emergency braking safety line is disconnected, so that emergency braking caused by power failure of the emergency braking safety loop is caused; finally, after the staff replaces the diode terminal 4 of the cab 2, the fault disappears and the vehicle runs normally; the existing diode terminal strip loses the function of directional direct current conduction in the burning loss state, and once a fault occurs, a worker cannot timely check whether the fault occurs or not, an internal diode is burnt and blackened, and the terminal strip installed in an electrical cabinet is wrapped in the terminal strip, so that the fault is difficult to visually find.
Therefore, a new technical solution is needed to solve the above technical problems.
Disclosure of Invention
The application provides a diode terminal strip with a self-detection fault state, which comprises a terminal strip body, wherein a diode detection circuit is integrated in the terminal strip body, and the diode detection circuit comprises:
the testing unit comprises a first contact, a second contact, a third contact and a fourth contact, wherein the fourth contact is a normally open contact, and the second contact, the third contact and the first contact are normally closed contacts;
the input end of the diode detection circuit is connected with the anode of the diode through the first contact, and the cathode of the diode is connected with the output end of the diode detection circuit through the second contact and the third contact in sequence;
the first end of the current-limiting resistor is connected with the output end of the diode detection circuit through the third contact, and the first end of the current-limiting resistor is connected with the cathode of the diode through the second contact;
the first end of the prompting unit is connected with the cathode of the diode;
when the second contact, the third contact and the first contact are all in an open state, the input end of the diode detection circuit is connected with the second end of the current-limiting resistor through the fourth contact, the second end of the prompting unit is connected with the first end of the current-limiting resistor through the second contact, and the positive electrode of the diode is grounded through the first contact.
As a preferred solution, the test unit is a test button or a test switch.
As a preferred solution, the prompting unit comprises a light emitting diode or a buzzer.
As a preferred solution, the input end and the output end are respectively connected with the power input end and the power output end.
As a preferable scheme, the power input end and the power output end adopt DC110V.
As a preferred embodiment, the current of the diode is 1A or 3A.
As a preferable scheme, the current of the light emitting diode is 10 mA-50 mA.
As a preferred embodiment, the light emitting diode is a red light emitting diode.
As a preferred solution, the resistance of the current limiting resistor is 5000 Ω.
The application provides a detection circuit with a diode terminal strip for self-detecting fault state, comprising:
the testing unit comprises a first contact, a second contact, a third contact and a fourth contact, wherein the fourth contact is a normally open contact, and the second contact, the third contact and the first contact are normally closed contacts;
the input end of the diode detection circuit is connected with the anode of the diode through the first contact, and the cathode of the diode is connected with the output end of the diode detection circuit through the second contact and the third contact in sequence;
the first end of the current-limiting resistor is connected with the output end of the diode detection circuit through the third contact, and the first end of the current-limiting resistor is connected with the cathode of the diode through the second contact;
the first end of the prompting unit is connected with the cathode of the diode;
when the second contact, the third contact and the first contact are all in an open state, the input end of the diode detection circuit is connected with the second end of the current-limiting resistor through the fourth contact, the second end of the prompting unit is connected with the first end of the current-limiting resistor through the second contact, and the positive electrode of the diode is grounded through the first contact.
As a preferred solution, the test unit is a test button or a test switch.
As a preferred solution, the prompting unit comprises a light emitting diode or a buzzer.
As a preferred solution, the input end and the output end are respectively connected with the power input end and the power output end.
As a preferable scheme, the power input end and the power output end adopt DC110V.
As a preferred embodiment, the current of the diode is 1A or 3A.
As a preferable scheme, the current of the light emitting diode is 10 mA-50 mA.
As a preferred embodiment, the light emitting diode is a red light emitting diode.
As a preferred solution, the resistance of the current limiting resistor is 5000 Ω.
The application provides a diode terminal strip with a self-detection fault state and a diode detection circuit, which solve the defect that the diode terminal strip in the prior art cannot intuitively and accurately judge whether the function is normal, and focus on optimizing and innovating the following applications:
1. adding a test unit: changing the traditional diode terminal strip into electrical equipment with a self-detection function; through the cooperation of first contact and second contact, third contact, fourth contact, increased inside control logic, through increasing the realization that internal detection logic was supporting self-test function.
2. An increase prompting unit: a prompting unit is added to diagnose whether the diode terminal strip is in a normal working state or not;
the beneficial effects brought by the technical scheme of the application are mainly represented by the following points:
(1) Visual detection of normal state and fault state of the diode terminal strip;
(2) When the method is applied to a vehicle management system, a convenient means is provided for vehicle maintenance, and the integrity of the vehicle control function and the timeliness of departure operation in the next day are ensured;
(3) When the system is applied to a vehicle management system, timeliness and accuracy of troubleshooting of the vehicle caused by failure of a vehicle control function are improved.
Drawings
FIG. 1 is an electrical schematic diagram of the prior art;
FIG. 2 is a circuit diagram showing the practical implementation of FIG. 1 in the prior art;
FIG. 3 is a schematic circuit diagram of the application in an untested state;
FIG. 4 is a schematic circuit diagram of the test state of the present application;
fig. 5 is a schematic structural diagram of the diode terminal CDT4 in practical application of fig. 2;
1. first contact 2, second contact 3, third contact 4, fourth contact
5. Diode 6, output terminal 7, current limiting resistor 8, first end of current limiting resistor
9. Prompt unit 10, prompt unit first end 11, input end
12. A second end 13 of the current limiting resistor, a second end 14 of the prompt unit and a power input end
15. A power supply output 16, a diode element.
Detailed Description
The diode circuit with self-detection fault condition of the present application will be described in detail with reference to the accompanying drawings.
Embodiment one:
the embodiment provides a diode terminal strip with a self-detection fault state, which comprises a terminal strip body, wherein the terminal strip body is a terminal strip in the prior art, the specific model and structure of the terminal strip body are not limited, a technician can correspondingly select the terminal strip according to specific conditions, a diode detection circuit is integrated in the terminal strip body, and the diode detection circuit comprises:
the test unit comprises a first contact 1, a second contact 2, a third contact 3 and a fourth contact 4, wherein the fourth contact 4 is a normally open contact, and the second contact 2, the third contact 3 and the first contact 1 are normally closed contacts; preferably, the test unit is a test button or a test switch, and the test unit or the test button in the prior art is adopted, which is not particularly limited in the present application.
The input end of the diode detection circuit is connected with the positive electrode of the diode 5 through the first contact 1, and the negative electrode of the diode 5 is connected with the output end 6 of the diode detection circuit through the second contact 2 and the third contact 3 in sequence; the diode 5 is a diode in the prior art, the specific model of the diode is not limited, a technician can correspondingly rotate according to specific conditions, and preferably, the current of the diode 5 is 1A or 3A;
a current limiting resistor 7, wherein a first end 8 of the current limiting resistor is connected with the output end 6 of the diode detection circuit through the third contact 3, and the first end 8 of the current limiting resistor is connected with the cathode of the diode 5 through the second contact 2; preferably, the resistance value of the current limiting resistor 7 is 5000 Ω;
a prompting unit 9, a first end 10 of which is connected with the cathode of the diode 5; preferably, the prompt power supply 9 adopts a light emitting diode or a buzzer in the prior art; the specific model is not particularly limited, and when the light emitting diode is adopted, in order to improve the warning degree and facilitate the timely discovery of workers, the light emitting diode is preferably a red light emitting diode, and the current of the light emitting diode is preferably 10 mA-50 mA.
When the fourth contact 4 is in a closed state and the second contact 2, the third contact 3 and the first contact 1 are all in an open state, the input end 11 of the diode detection circuit is connected with the second end 12 of the current-limiting resistor through the fourth contact 4, the second end 13 of the prompting unit 9 is connected with the first end 8 of the current-limiting resistor through the second contact 2, and the anode of the diode 5 is grounded through the first contact 1.
The input terminal 11 and the output terminal 6 are used for connecting the application to other circuits, and preferably, the input terminal 11 and the output terminal 6 are respectively connected with a power input terminal 14 and a power output terminal 15; more preferably, the power input terminal 14 is DC110V, and the power output terminal 15 is DC110V.
In the application, under the non-test state, an input interface and an output interface of the diode terminal block are connected into a specific circuit, and the diode 5 plays the roles of forward conduction and reverse blocking; under the condition that the input interface has DC110V control electricity, a fourth contact 4 integrated in the product is pressed down, so that a detection circuit is formed between the input end 11 and the grounding wire, and if the diode 5 is in a normal working state, the detection circuit is not conducted between the input end 11 and the grounding wire 17 after the fourth contact 4 is pressed down due to the reverse cut-off function, and the prompting unit 9 does not work; if the diode 5 is in a breakdown conducting state, the reverse cut-off function is destroyed, after the fourth contact 4 is pressed down, a detection circuit is formed between the input end 11 and the grounding wire 17 to conduct, and the prompting unit 9 works to emit light; at this time, the maintenance personnel immediately judges that the diode 5 is faulty and replaces it.
The specific principle is as follows: during testing, the fourth contact 4 is operated to enable the first contact 1 to be grounded, the second contact 2 to be communicated with the second end 13 of the prompting unit 9, and the third contact 3 to be disconnected with the second contact 2; when the diode 5 is in normal operation, the prompting unit 9 does not emit light due to its reverse cut-off function; when the diode 5 is in a breakdown conducting state, the reverse cut-off function of the diode is destroyed, and the prompting unit 9 prompts the diode to enable corresponding staff to perform corresponding operation.
Embodiment two:
the embodiment discloses a detection circuit with a diode terminal strip for self-detecting fault conditions, which comprises
The test unit comprises a first contact 1, a second contact 2, a third contact 3 and a fourth contact 4, wherein the fourth contact 4 is a normally open contact, and the second contact 2, the third contact 3 and the first contact 1 are normally closed contacts; preferably, the test unit is a test button or a test switch, and the test unit or the test button in the prior art is adopted, which is not particularly limited in the present application.
The input end of the diode detection circuit is connected with the positive electrode of the diode 5 through the first contact 1, and the negative electrode of the diode 5 is connected with the output end 6 of the diode detection circuit through the second contact 2 and the third contact 3 in sequence; the diode 5 is a diode in the prior art, the specific model of the diode is not limited, a technician can correspondingly rotate according to specific conditions, and preferably, the current of the diode 5 is 1A or 3A;
a current limiting resistor 7, wherein a first end 8 of the current limiting resistor is connected with the output end 6 of the diode detection circuit through the third contact 3, and the first end 8 of the current limiting resistor is connected with the cathode of the diode 5 through the second contact 2; preferably, the resistance value of the current limiting resistor 7 is 5000 Ω;
a prompting unit 9, a first end 10 of which is connected with the cathode of the diode 5; preferably, the prompt power supply 9 adopts a light emitting diode or a buzzer in the prior art; the specific model is not particularly limited, and when the light emitting diode is adopted, in order to improve the warning degree and facilitate the timely discovery of workers, the light emitting diode is preferably a red light emitting diode, and the current of the light emitting diode is preferably 10 mA-50 mA.
When the fourth contact 4 is in a closed state and the second contact 2, the third contact 3 and the first contact 1 are all in an open state, the input end 11 of the diode detection circuit is connected with the second end 12 of the current-limiting resistor through the fourth contact 4, the second end 13 of the prompting unit 9 is connected with the first end 8 of the current-limiting resistor through the second contact 2, and the anode of the diode 5 is grounded through the first contact 1.
The input terminal 11 and the output terminal 6 are used for connecting the application to other circuits, and preferably, the input terminal 11 and the output terminal 6 are respectively connected with a power input terminal 14 and a power output terminal 15; more preferably, the power input terminal 14 is DC110V, and the power output terminal 15 is DC110V.
The embodiment can be applied to a device which cannot intuitively observe a fault point except a terminal strip, the specific application is not limited, and the application of the embodiment to solve the visual detection of the normal state and the fault state belongs to the protection scope of the application, and the specific details are not repeated here.
Embodiment III:
the embodiment of the application is applied to the urban rail metro vehicle control in the prior art, and the principle is as follows: specifically, the application solves the problems in practice by using the power-off time-delay action relay in a breakthrough way: when a driver leaves the main handle of the driver controller, the power-off delay action is used for alarming the two relays to delay actions successively, the alarming buzzer is triggered to alarm after 3 seconds, and the emergency brake is triggered after 3 seconds; when a circuit break or a short circuit fault occurs, the power-off delay action is vigilant for the two relays to delay action successively, and after 3 seconds, the vigilant buzzer is triggered and the emergency brake is triggered; the safety of the vehicle is greatly protected (fault guiding safety), and the running safety of the vehicle is greatly ensured while the running of the vehicle is met; the design structure and the internal logic of the existing scheme are improved, the original diode terminal blocks are intelligently upgraded, so that maintenance and overhaul of a control logic part of the urban rail metro vehicle and quick and accurate fault finding and vehicle function recovery after faults occur are facilitated, and convenience is provided for maintenance and overhaul of the urban rail metro vehicle and quick fault finding of a control circuit; because the diode is an essential important part in the urban rail subway vehicle industry, the application is also the technical change and innovation and upgrading of the common diode, has good application prospect and mass production prospect, and increases the added value of products; and the wide applicability and practicality are favorable for popularization and application.
The application solves the defect that the diode in the prior art cannot intuitively and accurately judge whether the function is normal, and the detection device is arranged to have the self-checking function; the original equipment functions are ensured, the creative optimization design is realized, and the product is very easy to use; the stability, operability and reliability of the product are guaranteed by good design thought and component selection; the application innovatively invents a common diode terminal strip into a self-detection intelligent product with normal function operation, and the detection by external instrument equipment is changed into the self-detection by compatible internal circuit system, so that the self intelligent attribute is improved by phase change.
According to the diode terminal strip with the self-detection fault state, the traditional diode terminal strip is changed into the electrical equipment with the self-detection function by adding the fourth contact 4; diagnosing whether the diode terminal block is in a normal working state by adding a prompting unit 9; the internal detection logic is added to realize the matched self-detection function, the design structure and the internal logic of the existing scheme are improved to carry out intelligent upgrading on the original diode terminal blocks, so that maintenance and overhaul of the urban rail metro vehicle control logic part and quick and accurate fault finding and vehicle function recovery after faults occur are facilitated.
The application is realized by adding a fourth contact 4: changing the traditional diode 5 into an electrical device with a self-detection function; through the matching of the fourth contact 4 with the first contact 1, the second contact 2 and the third contact 3, the internal control logic is added, and the implementation of the self-detection function is matched through adding the internal detection logic; by adding a prompting unit 9 it is diagnosed whether the diode 5 is in a normal operating state.
The application is not limited to the application, can be applied in expansibility, establishes research and development and manufacturing platforms of related products and the like, and is widely applied to urban rail subway vehicle design; the development and manufacturing platform is established, which is beneficial to the development of new industrial fields, the integrated chain of production, supply and pin based on the platform is established, and the integrated chain is widely practiced and applied in urban rail metro vehicles, so that the application performance and reliability of the product are improved; in the future, the method is popularized in the whole urban rail subway vehicle system and even in foreign markets, so that the cost of detection and maintenance is greatly saved, and the working efficiency is improved.
The beneficial effects brought by the technical scheme of the application are mainly represented by the following points:
(1) Visual detection of normal state and fault state of the diode terminal strip; through the matching of the 4 contacts and the setting of the prompting unit 9, the self-checking function is realized;
(2) The method provides a convenient means for vehicle maintenance, and ensures the integrity of the vehicle control function and the timeliness of departure operation on the next day;
(3) The timeliness and the accuracy of the fault investigation of the vehicle caused by the fault of the vehicle control function are improved;
(4) The application can be popularized and applied to all urban subway vehicle projects, so that the whole body of a person benefits, and the application and maintenance of the diode are affected in a variety and change way.
(5) The original equipment functions are ensured, the creative optimization design is realized, and the product is very easy to use; by combining the reality problem, the application creates, solves the problems existing in practice:
the application innovatively invents a common diode terminal strip into a self-detection intelligent product with normal function operation, and the detection by external instrument equipment is changed into the self-detection by compatible internal circuit system, so that the self intelligent attribute is improved by phase change.
(6) The stability, operability and reliability of the product are guaranteed by good design thought and component selection;
(7) Forming a design thought, and carrying out modularized popularization and application on the application;
the diode terminal strip is an essential important part in the urban rail subway vehicle industry, and meanwhile, the application is also a technical change, innovation and upgrading of the common diode terminal strip, has good application prospect and mass production prospect, and increases the added value of products; and the wide applicability and practicality are favorable for popularization and application.
The above devices, connection relationships, etc. which are not specifically described belong to the prior art, and the present application is not specifically described herein.
The preferred embodiments of the present application have been described in detail above with reference to the accompanying drawings, but the present application is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present application within the scope of the technical concept of the present application, and all the simple modifications belong to the protection scope of the present application.
In addition, the specific features described in the above embodiments may be combined in any suitable manner, and various possible combinations of the present application are not described separately in order to avoid unnecessary repetition, unless otherwise contradicted.
Moreover, any combination of the various embodiments of the application can be made without departing from the spirit of the application, and the application is also to be regarded as the disclosure of the application.
Claims (10)
1. The utility model provides a take diode terminal row of self-detection fault state, includes the terminal row body, the internally integrated of terminal row body has diode detection circuitry, diode detection circuitry includes:
a test unit comprising a first contact (1), a second contact (2), a third contact (3) and a fourth contact (4);
in a non-test state, an input end (11) of the diode detection circuit is connected with an anode of the diode (5) through the first contact (1), and a cathode of the diode (5) is connected with an output end (6) of the diode detection circuit through the second contact (2) and the third contact (3) in sequence;
the current limiting resistor (7) is arranged in a non-test state, a first end (8) of the current limiting resistor is connected with an output end (6) of the diode detection circuit through the third contact (3), and the first end (8) of the current limiting resistor is connected with the negative electrode of the diode (5) through the second contact (2);
the first end (10) of the prompting unit (9) is connected with the cathode of the diode (5);
under the test state, when the fourth contact (4) is in a closed state and the third contact is in an open state, an input end (11) of the diode detection circuit is connected with the second end (12) of the current-limiting resistor through the fourth contact (4), a second end (13) of the prompting unit is connected with the first end (8) of the current-limiting resistor through the second contact (2), and the anode of the diode is grounded through the first contact.
2. The diode terminal block with self-detecting fault condition according to claim 1, wherein the test unit is a test button or a test switch.
3. A diode terminal block with self-detecting fault condition according to claim 1, characterized in that the prompting unit (9) comprises a light emitting diode or a buzzer.
4. A diode terminal block with self-detecting fault condition according to claim 1, characterized in that the input (11) and the output (6) are connected to a power input (14), a power output (15), respectively.
5. A diode terminal block with self-detecting fault condition according to claim 1, characterized in that the current limiting resistor (5) has a resistance of 5000 Ω.
6. A detection circuit of a diode terminal block with a self-detection fault state, comprising:
a test unit comprising a first contact (1), a second contact (2), a third contact (3) and a fourth contact (4);
in a non-test state, an input end (11) of the diode detection circuit is connected with an anode of the diode (5) through the first contact (1), and a cathode of the diode (5) is connected with an output end (6) of the diode detection circuit through the second contact (2) and the third contact (3) in sequence;
the current limiting resistor (7) is arranged in a non-test state, a first end (8) of the current limiting resistor is connected with an output end (6) of the diode detection circuit through the third contact (3), and the first end (8) of the current limiting resistor is connected with the negative electrode of the diode (5) through the second contact (2);
the first end (10) of the prompting unit (9) is connected with the cathode of the diode (5);
under the test state, when the fourth contact (4) is in a closed state and the third contact is in an open state, an input end (11) of the diode detection circuit is connected with the second end (12) of the current-limiting resistor through the fourth contact (4), a second end (13) of the prompting unit is connected with the first end (8) of the current-limiting resistor through the second contact (2), and the anode of the diode is grounded through the first contact.
7. The circuit of claim 6, wherein the test unit is a test button or a test switch.
8. The detection circuit with a diode terminal block for self-detecting a fault condition according to claim 6, wherein the prompting unit (9) comprises a light emitting diode or a buzzer.
9. The circuit according to claim 6, wherein the input terminal (11) and the output terminal (6) are connected to a power input terminal (14) and a power output terminal (15), respectively.
10. The detection circuit with a diode terminal block for self-detecting fault conditions according to claim 6, characterized in that the resistance of the current limiting resistor (5) is 5000 Ω.
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| CN202111396876.9A CN114113705B (en) | 2021-11-23 | 2021-11-23 | Diode terminal strip with self-detection fault state and detection circuit thereof |
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| CN202111396876.9A CN114113705B (en) | 2021-11-23 | 2021-11-23 | Diode terminal strip with self-detection fault state and detection circuit thereof |
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| CN114113705B true CN114113705B (en) | 2023-09-22 |
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| CN114113705A (en) | 2022-03-01 |
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