A multi-node load testing system based on 485 communication and relay application

Abstract

The application belongs to the field of electronic detonator wire testing, and particularly relates to a multi-node load testing system based on 485 communication and relay application, which comprises an upper computer; the upper computer is connected with a testing host module through signals; the testing host module is connected with a plurality of communication wire switching modules through signals; the plurality of communication wire switching modules are connected in series; the communication wire switching module at the end is connected with a plurality of module terminal testing devices through signals, and the module terminal testing devices listen to bus commands to start timing monitoring of the detonation state of the module. After testing, the testing host obtains testing data of the module terminal testing devices through 485, analyzes and outputs testing conclusions, the testing environment of the testing device is completely equivalent to the real application scene, and the testing device has the advantages of saving testing sites, saving human resources and improving testing efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electronic detonator wire testing, in particular to a multi-node load testing system based on 485 communication and relay application. BACKGROUND

[0002] At present, in the electronic detonator industry, the application environment of electronic detonators in the field is very complex, and the stability of electronic detonator communication is very strict. The terminal load of electronic detonators in the application environment is different, and the communication performance is also different. There are two key dimensions of the characteristics of the terminal load of electronic detonators affecting the communication performance. The first key dimension is the communication wire (material and length) between the load terminal and the electronic detonator controller. The second dimension is the terminal electronic detonator configuration (electronic detonator pin length, electronic detonator quantity). The communication wire used in the field has diversity, and the connection length is from dozens of meters to one kilometer. The number of electronic detonators in different application occasions ranges from several to several hundred. The length of the pin used by the electronic detonator also has many length specifications. In this way, the terminal configuration of the electronic detonator in the field is very complex. If the application terminals cannot be tested comprehensively, the stability of the communication of the electronic detonator will have potential risks, and the stability of the communication of the electronic detonator in the field application cannot be guaranteed.

[0003] However, in order to test the communication stability of different terminal configurations in the electronic detonator industry at present, an equivalent load is usually used to simulate various terminal configurations. The specific method of the equivalent load is to use series equivalent resistance and parallel equivalent capacitance of the communication medium (communication wire, wire length, pin length, etc.) to simulate the equivalent load. However, there is a big difference between the test results of the simulated load and the actual used load, which has a great misleading effect on the authenticity of the test results. Therefore, in view of the above problems, a multi-node load testing system based on 485 communication and relay application is proposed. SUMMARY

[0004] In order to make up for the deficiencies of the prior art and solve at least one technical problem proposed in the background art, the present application proposes a multi-node load testing system based on 485 communication and relay application.

[0005] The technical scheme adopted by the present application to solve its technical problems is: the multi-node load testing system based on 485 communication and relay application, comprising an upper computer; the upper computer is connected with a test host module through signals; the test host module is connected with a plurality of communication wire switching modules through signals; a plurality of communication wire switching modules are connected in series; the communication wire switching module at the end is connected with a plurality of module terminal test devices through signals; a plurality of module terminal test devices are connected in series.

[0006] Preferably, the test host module comprises an ECU unit; the ECU unit is connected with a communication interface and a 485 drive circuit module through signal connection; the ECU unit is connected with a first voltage reduction circuit, a second voltage reduction circuit and a switching power supply through electrical connection in sequence; the 485 drive circuit is connected with the first voltage reduction circuit through electrical connection; the 485 drive circuit is connected with a first interface through signal connection; and the first voltage reduction circuit is connected with a power supply output module through electrical connection.

[0007] Preferably, the module terminal test equipment comprises an electronic module action detection unit, an electronic module foot wire switching unit, a wire harness interface in unit and a wire harness interface out unit; the wire harness interface in unit comprises a second interface; the wire harness interface out unit comprises a third interface; the second interface is connected with the electronic module action detection unit; the third interface is connected with the electronic module foot wire switching unit; the electronic module action detection unit and the electronic module foot wire switching unit are connected; and the wire harness interface in unit and the wire harness interface out unit are both provided with a first electronic detonator bus interface; the two first electronic detonator bus interfaces are connected through signal connection; and the first electronic detonator bus interface is connected with the electronic module foot wire switching unit.

[0008] Preferably, the electronic module action detection unit comprises an MCU electronic module action assembly; the MCU electronic module action assembly is connected with a fourth interface and a 25-way electronic module action detection assembly through signal connection respectively; the fourth interface is connected with the second interface through signal connection; and the 25-way electronic module action detection assembly is connected with a 25-way electronic module through signal connection.

[0009] Preferably, the electronic module foot wire switching unit comprises a 25-way electronic module switching assembly; the 25-way electronic module switching assembly is connected with a 25-way foot wire and a first MCU control foot wire switching assembly through signal connection; the 25-way electronic module switching assembly is connected with the 25-way electronic module through signal connection; the 25-way foot wire is connected with a second electronic detonator bus interface through signal connection; the first electronic detonator bus interface is connected with the second electronic detonator bus interface through signal connection; the first MCU control foot wire switching assembly is connected with a fifth interface through signal connection; and the fifth interface is connected with the third interface through signal connection.

[0010] Preferably, the communication wire switching module comprises a third electronic detonator bus interface, a fourth electronic detonator bus interface and two sixth interfaces; the third electronic detonator bus interface is connected with a plurality of relays, a wire switching assembly and a wire interface through signal connection in sequence; the relay at the end is connected with the fourth electronic detonator bus interface through signal connection; the plurality of relays are all connected with a second MCU control foot wire switching assembly through signal connection; the second MCU control foot wire switching assembly is connected with a seventh interface through signal connection; and the seventh interface and the sixth interface are connected through signal connection.

[0011] Preferably, the first voltage reduction circuit is a DC 24V-DC 5V voltage reduction circuit; and the second voltage reduction circuit is a DC 5V-DC 3.3V voltage reduction circuit.

[0012] Preferably, the first interface, the second interface, the third interface, the fourth interface, the fifth interface, the sixth interface and the seventh interface are all 485 interfaces.

[0013] The present application has the advantages of:

[0014] 1. The present application sets a test host module, a communication wire switching module and a module terminal test device, in use, the test host module sends a command of module pin length configuration to the module terminal test device in the electronic detonator communication system through 485 communication, sets the terminal test environment of the test module, the test host module sends a configuration command to the communication wire switching module through 485, determines the wire test environment used, the test host module sends a test command to the communication host in the communication system of the electronic detonator to be tested through 485, at the same time, the module terminal test device listens to the bus command to start timing monitoring of the module initiation state. After the test is completed, the test host obtains the test data of the module terminal test device through 485, analyzes and outputs the test conclusion, the test environment of the present test device is completely equivalent to the real application scene, and the test device has the advantages of saving test site, saving human resources and improving test efficiency.

[0015] 2. The present application sets a communication wire switching module and a module terminal test device, in use, a plurality of communication wire switching modules and module terminal test devices can be connected in series according to needs, theoretically, the switching and free combination of infinite pin length types, random electronic module numbers and infinite communication wire types can be realized, and the test device has the automatic test function, which can greatly speed up the test progress and greatly help the test of the communication stability of the electronic detonator. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0017] Figure 1 The system flowchart of the present application;

[0018] Figure 2 The system flowchart of the test host module of the present application;

[0019] Figure 3The module terminal test equipment system flow chart of the present application;

[0020] Figure 4 The communication wire switching module system flow chart of the present application;

[0021] Figure 5 The wire switching principle diagram of the present application.

[0022] Figure 6 The foot wire switching principle diagram of the present application; DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0024] The specific embodiments are given below.

[0025] Please refer to Figures 1-6 As shown in the figure, a multi-node load test system based on 485 communication and relay application includes a host computer; the host computer is connected with a test host module through signals; the test host module is connected with a plurality of communication wire switching modules through signals; the plurality of communication wire switching modules are connected in series; the communication wire switching module at the end is connected with a plurality of module terminal test equipment through signals; and the plurality of module terminal test equipment are connected in series.

[0026] Further, as shown in the figure, Figure 2 The test host module includes an ECU unit; the ECU unit is connected with a communication interface and a 485 drive circuit module through signals; the ECU unit is connected with a first voltage reducing circuit, a second voltage reducing circuit and a switching power supply in series through electrical connection; the 485 drive circuit is connected with the first voltage reducing circuit through electrical connection; the 485 drive circuit is connected with a first interface through signals; and the first voltage reducing circuit is connected with a power supply output module through electrical connection.

[0027] In use, the test host module adopts 485 communication, as a 485 host, can communicate with electronic detonator controller, module terminal test equipment and communication wire switching module, can realize configuration load terminal combination, test command sending, test data receiving, test data analysis and test data storage functions.

[0028] Further, as shown in the figure, Figure 3As shown, the module terminal test equipment includes an electronic module action detection unit, an electronic module pin line switching unit, a wire harness interface in unit and a wire harness interface out unit; the wire harness interface in unit includes a second interface; the wire harness interface out unit includes a third interface; the second interface is connected with the electronic module action detection unit; the third interface is connected with the electronic module pin line switching unit; the electronic module action detection unit and the electronic module pin line switching unit are connected; the wire harness interface in unit and the wire harness interface out unit are both provided with a first electronic detonator bus interface; the two first electronic detonator bus interfaces are connected through signals; the first electronic detonator bus interface is connected with the electronic module pin line switching unit; the electronic module action detection unit includes an MCU electronic module action assembly; the MCU electronic module action assembly is respectively connected through signals with a fourth interface and a 25-way electronic module action detection assembly; the fourth interface is connected through signals with the second interface; the 25-way electronic module action detection assembly is connected through signals with 25-way electronic modules; the electronic module pin line switching unit includes a 25-way electronic module switching assembly; the 25-way electronic module switching assembly is connected through signals with 25-way pin lines and a first MCU control pin line switching assembly; the 25-way electronic module switching assembly is connected through signals with the 25-way electronic modules; the 25-way pin lines are connected through signals with a second electronic detonator bus interface; the first electronic detonator bus interface is connected through signals with the second electronic detonator bus interface; the first MCU control pin line switching assembly is connected through signals with a fifth interface; the fifth interface is connected through signals with the third interface.

[0029] In use, the module terminal test equipment adopts 485 communication, and the equipment serves as a 485 slave device. The module terminal test equipment is composed of two parts, one part is an electronic module pin line switching unit, responsible for the access and disconnection of 25-way pin lines, and the second part is an electronic module action detection unit. The module terminal test equipment has the functions of 25-way electronic module random access, 25-way electronic module detonation action, false action collection and detonation delay measurement.

[0030] Further, as shown in the drawings, Figure 4As shown, the communication wire switching module includes a third electronic detonator bus interface, a fourth electronic detonator bus interface and two sixth interfaces; the third electronic detonator bus interface is sequentially connected with a plurality of relays, a wire switching component and a wire interface through signals; the relay at the end is connected with the fourth electronic detonator bus interface through signals; each of the plurality of relays is connected with a second MCU control foot wire switching component through signals; the second MCU control foot wire switching component is connected with a seventh interface through signals; the seventh interface and the sixth interface are connected through signals; in use, the communication wire switching module can realize infinite connection line switching function through series connection of a plurality of communication wire switching modules by utilizing the double-way switching of the relays.

[0031] Further, the first voltage reduction circuit is a DC24V-DC5V voltage reduction circuit; the second voltage reduction circuit is a DC5V-DC3.3V voltage reduction circuit; the first interface, the second interface, the third interface, the fourth interface, the fifth interface, the sixth interface and the seventh interface are all 485 interfaces.

[0032] Working principle, the test host module sends a command of module foot wire length configuration to the module terminal test equipment in the electronic detonator communication system through 485 communication, sets the terminal test environment of the test module, the test host module sends a configuration command to the communication wire switching module through 485, determines the wire test environment used, the test host module sends a test command to the communication host in the communication system of the electronic detonator to be tested through 485, at the same time, the module terminal test equipment listens to the bus command to cooperate to start timing monitoring of the module detonation state. After the test is completed, the test host obtains the test data of the module terminal test equipment through 485, analyzes and outputs the test conclusion, the test environment of the test equipment is completely equivalent to the real application scene, and the test efficiency is improved, the test progress is greatly accelerated, and the test of the electronic detonator communication stability is greatly helpful.

[0033] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are contained in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0034] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. A multi-node load testing system based on 485 communication and relay applications, comprising a host computer; characterized in that: The host computer is connected to a test host module via a signal; the test host module is connected to multiple communication cable switching modules via a signal; the multiple communication cable switching modules are connected in series; the communication cable switching module at the end is connected to multiple module terminal test devices via a signal; the multiple module terminal test devices are connected in series. The test host module includes an ECU unit; the ECU unit is connected to a communication interface and a 485 drive circuit module via signals; the ECU unit is electrically connected in sequence to a first buck circuit, a second buck circuit, and a switching power supply; the 485 drive circuit is electrically connected to the first buck circuit; the 485 drive circuit is connected to a first interface via signals. The module terminal testing equipment includes an electronic module action detection unit, an electronic module pin switching unit, a wiring harness interface input unit, and a wiring harness interface output unit. The wiring harness interface input unit includes a second interface; the wiring harness interface output unit includes a third interface; the second interface is connected to the electronic module action detection unit; the third interface is connected to the electronic module pin switching unit; the electronic module action detection unit and the electronic module pin switching unit are connected; each of the wiring harness interface input unit and the wiring harness interface output unit is equipped with a first electronic detonator bus interface; the two first electronic detonator bus interfaces are connected via a signal; the first electronic detonator bus interface is connected to the electronic module pin switching unit. The communication cable switching module includes a third electronic detonator bus interface, a fourth electronic detonator bus interface, and two sixth interfaces. The third electronic detonator bus interface is sequentially connected to multiple relays, cable switching components, and cable interfaces via signals. The relays at the end are connected to the fourth electronic detonator bus interface via signals. Each of the multiple relays is connected to a second MCU control pin switching component via signals. The second MCU control pin switching component is connected to a seventh interface via signals. The seventh interface and the sixth interface are connected via signals.

2. The multi-node load testing system based on 485 communication and relay applications according to claim 1, characterized in that: The electronic module motion detection unit includes an MCU electronic module motion component; the MCU electronic module motion component is respectively connected to a fourth interface and a 25-channel electronic module motion detection component via signals; the fourth interface is connected to the second interface via signals; the 25-channel electronic module motion detection component is connected to 25 electronic modules via signals.

3. The multi-node load testing system based on 485 communication and relay applications according to claim 2, characterized in that: The electronic module pin switching unit includes a 25-channel electronic module switching component; the 25-channel electronic module switching component is connected to 25 pins and a first MCU control pin switching component via signals; the 25-channel electronic module switching component and the 25 electronic modules are connected via signals; the 25 pins are connected to a second electronic detonator bus interface via signals; the first electronic detonator bus interface and the second electronic detonator bus interface are connected via signals; the first MCU control pin switching component is connected to a fifth interface via signals; the fifth interface and the third interface are connected via signals.

4. The multi-node load testing system based on 485 communication and relay applications according to claim 3, characterized in that: The first step-down circuit is a DC24V-DC5V step-down circuit; the second step-down circuit is a DC5V-DC3.3V step-down circuit.

5. A multi-node load testing system based on 485 communication and relay applications according to claim 4, characterized in that: The first, second, third, fourth, fifth, sixth, and seventh interfaces are all 485 interfaces.

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