Power supply and distribution test equipment switching device for satellite electrical logging and use method

Abstract

The invention discloses a power supply and distribution test equipment switching device for satellite electrical logging and a use method. The method comprises the following steps: (1) designing the switching device into three parts, namely a satellite end, an equipment end and a switching line; (2) designing a switching device satellite end; (3) designing a switching device equipment end; (4) designing a switching line by considering the self-checking function of the switching device and the satellite end and the equipment end designed in the steps (2) and (3); and (5) designing a use method of the switching device based on design results of the steps (2)-(4). The invention provides the power supply and distribution test equipment switching device for satellite electrical testing and provides a use method, the specificity and universality of equipment interfaces during electrical testing of different satellites can be considered, the cost of satellite electrical testing is reduced, and the working efficiency and the system reliability are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of satellite testing, and relates to a power supply and distribution test equipment adapter for satellite electrical testing and a use method thereof. Background Art

[0002] With the development of space technology, the number and types of satellites are increasing. Satellites need to carry out a lot of electrical testing during the production process, which puts forward higher and higher requirements on the versatility and specialization of electrical testing equipment.

[0003] When different satellites are tested, the properties of the cable points in the output interface of the power supply and distribution test equipment are designed to be the same, and the power supply and distribution test equipment corresponding to the cable points with the same point number in the umbilical cable for testing will be different. Therefore, different testing cables need to be designed for different satellites. On the one hand, this increases the cost and reduces the efficiency. At the same time, there will be potential catastrophic problems such as cable plugging errors, which reduces the reliability of the system. Summary of the invention

[0004] The technical problem solved by the present invention is: in view of the problem that it is difficult to balance the specificity and universality of the interface of the power supply and distribution test equipment in the existing satellite electrical measurement, a power supply and distribution test equipment adapter for satellite electrical measurement is designed, and a method of use is provided, which can balance the specificity and universality of the equipment interface in different satellite electrical measurements. The cost of satellite electrical measurement is greatly reduced, and the work efficiency and system reliability are improved.

[0005] The technical solution of the present invention is: a power supply and distribution test equipment adapter for satellite electrical testing, including a satellite end of the adapter, an equipment end of the adapter, and a transfer line; wherein the satellite end of the adapter is connected to the satellite through an umbilical cable; the equipment end of the adapter is connected to the power supply and distribution test equipment through a multi-core cable; the transfer line sets the on-off relationship between each cable point of the equipment end of the adapter and the satellite end of the adapter according to the electrical testing requirements of different satellites.

[0006] Furthermore, the interface of the satellite end of the adapter is an electrical connector, and the type and quantity of the electrical connector match the branch end of the umbilical cable.

[0007] Furthermore, the equipment end of the adapter is divided into an energy equipment end and a signal equipment end, the energy equipment end is used to connect the energy equipment, and the signal equipment end is used to connect the signal acquisition and control equipment; wherein, the energy equipment provides energy for the satellite during electrical measurement, and the signal acquisition and control equipment processes the data obtained during satellite electrical measurement.

[0008] Furthermore, the interfaces of the energy device end and the signal device end are both electrical connectors; the energy device end is connected to the energy device via a multi-core cable, and the signal device end is connected to the signal acquisition and control device via a multi-core cable.

[0009] Furthermore, the types of electrical connectors connected to the energy equipment at the energy equipment end are all the same, and the electrical connector used at the energy equipment end is an electrical connector with a minimum number of cable points greater than or equal to a among the alternative electrical connectors. One electrical connector corresponds to one energy equipment, and the number of electrical connectors s at the energy equipment end is s=n max +n 冗余 ; where a = 2a s , a s The number of cable points designed for each energy device output, n max is the maximum number of energy devices required for different satellite electrical measurements, n 冗余 Indicates the number of redundant electrical connectors designed to improve equipment reliability.

[0010] Furthermore, the type and number of electrical connectors used by the signal device end are determined in the following manner:

[0011] (61) Determine the number of cable points q at the signal equipment end of the switching device as q = 2 × q max , where q max When measuring for different satellites, the maximum number of signal cable points at the satellite end of the switching device indicates that one signal cable point at the satellite end is connected to at least two cable points at the equipment end of the switching device;

[0012] (62) Assume that the number of cable points that need to be allocated to the electrical connector at the signal equipment end is w n Among the alternative electrical connectors, the electrical connector with the most cable points is d max cable points; if d max ≥w n , then among the alternative electrical connectors, select a cable with a number of points greater than or equal to w n The electrical connector with the minimum number of points is used as the electrical connector; if d max <w n , then select the number of cable points as d max The electrical connector is used as the electrical connector used; the number of cable points in the electrical connector determined in this step is recorded as d n , and record the type and number of electrical connectors used;

[0013] (63) Calculate the number of cable points x to be allocated at the signal device end after the electrical connector is determined according to step (62) n For x n =w n -d n , if x n ≤0, then end; if x n >0, then x n The value of w is assigned n , and return to step (62) until xn ≤0, and record the type and number of electrical connectors used;

[0014] (64) Count the types and numbers of electrical connectors determined according to steps (62) to (63) to obtain the types and numbers of electrical connectors required by the signal device end of the switching device.

[0015] Furthermore, the switching circuit includes a working circuit and a hardware self-test circuit, the working circuit is a circuit used in the satellite electrical test state, and the hardware self-test circuit is a circuit used in the hardware self-test state; the opening and closing of a main switch respectively indicate that the switching device enters the electrical test working state or the hardware self-test state;

[0016] There are multiple switches in the transfer line to control the on-off between each cable point at the equipment end and the satellite end, so as to realize the access of different electrical measurement equipment to the satellite; the on-off of each switch in the transfer line is controlled by the measurement and control computer; the use of switches with holding function in the transfer line can reduce the number of switch actions;

[0017] The on-off rules for the cable points at the switching device end and the satellite end include:

[0018] On-off rule A: Each cable point at the equipment end of the switching device can be connected to any cable point at the satellite end of the switching device. The connection or disconnection of the cable points at the equipment end of the switching device and the satellite end of the switching device is controlled by different switches in the switching line. One cable point at the equipment end of the switching device can be connected to multiple cable points at the satellite end of the switching device, or all of them can be disconnected;

[0019] On-off rule B: Each cable point at the satellite end of the switching device can be connected to any cable point at the equipment end of the switching device. The connection or disconnection of the cable points at the equipment end of the switching device and the satellite end of the switching device is controlled by different switches in the switching line. A cable point at the satellite end of the switching device can only be connected to the cable points transmitting the same signal or energy at the equipment end of the switching device, or all of them can be disconnected; the same signal means that the content of the signal transmission is the same, and the same energy means the same output end of the same energy device;

[0020] The hardware self-test circuit includes multiple self-test branch switches, one self-test branch switch corresponds to one cable point at the equipment end of the switching device, and the number of self-test branch switches is the same as the number of cable points at the equipment end of the switching device. In the self-test state, only one self-test branch switch is in a closed state at a time, and the other self-test branch switches are in an open state;

[0021] The hardware self-test circuit also includes multiple self-test status collection points, one self-test status collection point corresponds to a cable point at the satellite end of the switching device, and the number of self-test status collection points is the same as the number of cable points at the satellite end of the switching device.

[0022] A method for using a power supply and distribution test equipment adapter for satellite electrical testing, comprising:

[0023] (71) The power supply and distribution test equipment is connected to the equipment end of the switching device via a multi-core cable, and the satellite is connected to the satellite end of the switching device via an umbilical cable;

[0024] (72) In the measurement and control computer, according to the equipment information corresponding to the cable point at the equipment end of the switching device, the equipment information corresponding to each cable point in the satellite electrical measurement umbilical cable, and the on-off rule A and the on-off rule B, the corresponding relationship between each cable point at the equipment end of the switching device and each cable point at the satellite end of the switching device is determined, and a switch control file of the switching line is compiled;

[0025] (73) using the switch control file to perform software self-test and set the on / off of the cable point at the device end of the switching device and the cable point at the satellite end of the switching device;

[0026] (74) After the software self-test passes and the on / off settings of the device-side cable point and the satellite-side cable point are completed, a hardware self-test is performed using the hardware self-test circuit;

[0027] (75) After the hardware self-test passes, adjust the main switch of the hardware self-test circuit and the working circuit in the transfer circuit, switch to the working circuit, and use the working circuit to perform satellite electrical measurement work.

[0028] Further, the software self-check is performed using the switch control file to set the on / off of the cable point at the device end of the switching device and the cable point at the satellite end of the switching device, specifically:

[0029] (73-1) The measurement and control computer compares the switch control file stored in the previous operation with the switch control file generated in step (72). If they are the same, it is determined that the software self-check has passed and the on / off setting of the cable point at the equipment end of the switching device and the cable point at the satellite end of the switching device is completed, and the process goes to step (74); if they are different, the process goes to step (73-2);

[0030] (73-2) Check whether the switch control file generated in step (72) complies with the on-off rule A and the on-off rule B; if so, it is determined that the software self-check has passed and the process proceeds to step (73-3); if not, it is determined that the software self-check has failed, an incorrect cable point number is indicated, and the process proceeds to step (72) to recompile the switch control file;

[0031] (73-3) The measurement and control computer controls the on and off of the line switch in the switching device according to the switch control file, and completes the on and off relationship setting of the cable points at the equipment end and the satellite end in the switching device.

[0032] Further, the hardware self-checking circuit is used to perform the hardware self-checking, specifically:

[0033] (74-1) Under the control of the measurement and control computer, the main switch of the hardware self-test circuit and the working circuit in the switching circuit is controlled to switch to the hardware self-test circuit;

[0034] (74-2) Under the control of the measurement and control computer, the switch of one self-test branch is closed, and the switches of other self-test branches are in the open state;

[0035] (74-3) Each detection status collection point transmits the collected line on / off information to the measurement and control computer and records it;

[0036] (74-4) After recording is completed, disconnect the switch of the self-test branch, repeat steps (74-2) to (74-3), and traverse all self-test branches;

[0037] (74-5) After all branch lines have completed self-test, disconnect the switches of all self-test branches, generate a test result file in the measurement and control computer, and compare it with the switch control file to determine whether they are consistent; if they are consistent, the hardware self-test passes; if they are inconsistent, the hardware self-test fails and the error is reported.

[0038] The beneficial effects of the present invention compared with the prior art are:

[0039] Compared with the existing power supply and distribution test equipment connected to the satellite umbilical cable, it is difficult to balance the specificity and versatility of the interface of the electrical test equipment, and it is necessary to design a special adapter cable. The present invention proposes a power supply and distribution test equipment adapter device and a method of use for satellite electrical testing, which can balance the specificity and versatility of the interface when testing different satellites. Specifically, it includes: first, the adapter device is designed into three parts: the satellite end, the equipment end and the adapter line. Secondly, according to the characteristics of the electrical testing equipment and the electrical testing requirements of the satellite, the equipment end and the satellite end of the adapter device are designed, and then the adapter line is designed, and a method of use is given. At the same time, considering the reliability requirements of the system, the self-test function of the adapter device is added. The present invention greatly reduces the cost of satellite electrical testing equipment and improves work efficiency and system reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a design flow chart of the present invention;

[0041] Figure 2 This is a schematic diagram of the connection of the switching device during satellite electrical measurement;

[0042] Figure 3 This is a schematic diagram of the connection between the umbilical cable, satellite and switching device;

[0043] Figure 4 Design a sample schematic for a transfer line. DETAILED DESCRIPTION

[0044] Taking into account the problem that it is difficult to balance the universality and specificity of the electrical testing equipment interface when testing different satellites, the present invention designs a switching device for power supply and distribution test equipment and provides a method of use to meet the electrical testing needs of different satellites.

[0045] When the satellite is conducting electrical testing, it is connected to the power supply and distribution test equipment through a switching device, such as Figure 2 As shown. The switching device mainly includes three parts: the switching device equipment end, which is connected to the satellite power supply and distribution test equipment through a multi-core cable; the switching line, including the working line and the hardware self-test line. The working line is the line used in the satellite electrical test state, and the hardware self-test line is the line used in the hardware self-test state. The switching device satellite end is connected to the satellite through an umbilical cable. In the working line, the on-off relationship between each cable point of the switching device equipment end and the switching device satellite end is set according to the electrical test requirements of different satellites.

[0046] Figure 1 The flowchart of the present invention is shown below, and the specific implementation method is introduced in combination with relevant diagrams:

[0047] 1. Design the satellite end of the switching device

[0048] The satellite end of the switching device is connected to the equipment end of the umbilical cable, such as Figure 3 shown.

[0049] The interface of the satellite end of the adapter is an electrical connector, and the type and quantity of the electrical connector match the branch end of the umbilical cable.

[0050] When the umbilical cable is used for satellite electrical measurement, one end of the umbilical cable is connected to the satellite and the other end is connected to the satellite end of the adapter. The umbilical cable contains multiple cable cores. Both ends of the umbilical cable are electrical connectors. The cable points in the electrical connectors at both ends are connected by cable cores. The end of the umbilical cable connected to the satellite is called the umbilical cable detached electrical connector end, and the end connected to the satellite end of the adapter is called the umbilical cable branch end.

[0051] 2. Design the equipment side of the transfer device

[0052] The equipment end of the switching device is divided into an energy equipment end and a signal equipment end. The energy equipment end is used to connect energy equipment, and the signal equipment end is used to connect signal acquisition and control equipment.

[0053] The power supply and distribution test equipment includes energy equipment, signal acquisition and control equipment, and measurement and control computers. The energy equipment provides energy for the satellite during electrical testing. The signal acquisition and control equipment processes the data obtained during satellite electrical testing and transmits it to the measurement and control computer. The measurement and control computer processes the data obtained by the signal acquisition and control equipment on the one hand, and controls the switching lines in the switching device on the other.

[0054] The interfaces at the energy equipment end and the signal equipment end are both electrical connectors, and the measurement and control computer is connected to the switching device and the signal acquisition and control equipment through a bus.

[0055] The equipment end of the switching device is connected to the energy equipment and the signal acquisition and control equipment through a multi-core cable. Both ends of the multi-core cable are electrical connectors. A multi-core cable contains multiple cable cores. The cable points in the electrical connectors at both ends of the cable are connected through the cable cores.

[0056] (21) Determine the type and number of electrical connectors used at the energy device end

[0057] The energy equipment used for satellite electrical measurement has a DC output, so the energy equipment has two output terminals, namely the positive output terminal and the negative output terminal.

[0058] Based on this, the energy equipment side is designed as follows:

[0059] (211) Design the number of cable points corresponding to the output end of the energy equipment

[0060] The number of cable points a in the electrical connector corresponding to an energy device is determined by the following formula:

[0061] a=a n ×a s

[0062] In the formula, a n is the number of output terminals of the energy device, a s The number of cable points for each output.

[0063] According to the above, the number of output terminals at the energy device end is a n =2, which is the output positive terminal and output negative terminal;

[0064] During satellite electrical measurement, in order to reduce the transmission line resistance and improve the reliability of transmission, each output end of the energy equipment corresponds to multiple parallel cable cores, that is, to multiple cable points in the electrical connector.

[0065] In the present invention, four parallel cable cores are designed for one output end of the energy device, that is, one output end of an energy device corresponds to four cable points in the electrical connector, namely a s =4.

[0066] It can be obtained that the number of cable points a=8 in the electrical connector corresponding to one energy device corresponds to 8 parallel cable cores.

[0067] (212) Determine the type of electrical connector at the energy device end

[0068] The models and types of the electrical connectors connected to the energy equipment at the energy equipment end are all the same, and the electrical connector used is determined to be the electrical connector with the minimum number of cable points among the alternative electrical connectors, which is greater than or equal to a=8 cable points.

[0069] For example, among the alternative electrical connectors, different types of electrical connectors have 5, 6, 7, 9, 11, and 13 cable points. In the present invention, as long as 8 cable points are met, the electrical connectors with 9, 11, and 13 points all meet the requirements. Considering that only 8 cable points are required, the use of electrical connectors with 11 or 13 cable points will waste performance. Therefore, an electrical connector with the minimum number of points greater than or equal to 8 circuit points is selected, that is, an electrical connector with 9 cable points.

[0070] (213) Determine the number of electrical connectors at the energy device end

[0071] At the energy device end, one electrical connector corresponds to one energy device, and the number of electrical connectors s at the energy device end is

[0072] s=n max +n 冗余

[0073] Among them, n max The maximum number of energy devices required for different satellite electrical measurements; n 冗余 Indicates the number of redundant electrical connectors designed to improve equipment reliability.

[0074] (22) Determine the type and number of electrical connectors used at the signal equipment end

[0075] (221) The number of cable points q at the signal equipment end is determined as:

[0076] q=2×q max

[0077] Among them, q max The maximum number of signal cable points at the satellite end of the switching device when measuring different satellites. This formula means that one signal cable point at the satellite end is connected to at least two cable points at the equipment end of the switching device.

[0078] For example, for 4 different satellites, the number of signal cable points required for electrical measurement is as follows: 5 cable points for satellite 1, 8 cable points for satellite 2, 16 cable points for satellite 3, and 10 cable points for satellite 4. From this, we can get, q max =16, corresponding to the 16 cable points required by satellite 3. The number of cable points at the signal equipment end is determined to be q = 2 × q max =2×16=32 cable points.

[0079] For satellite 1, there is

[0080] q÷5=32÷5=6 remainder 2

[0081] It indicates that one cable point at the satellite end can be connected to 6 cable points at the switching device end, and 2 cable points are left for use. As needed, the cable points used for transmitting important signals can be increased so that the number of cable points used is greater than or equal to 6 and less than or equal to 6+2=8;

[0082] For satellite 2, there are

[0083] q÷8=32÷8=4

[0084] It indicates that one cable point at the satellite end can be connected to four cable points at the equipment end of the switching device;

[0085] For satellite 3, there are

[0086] q÷16=32÷16=2

[0087] Indicates that one cable point at the satellite end can be connected to two cable points at the equipment end of the switching device;

[0088] For satellite 4, there are

[0089] q÷10=32÷10=3 remainder 2

[0090] It indicates that one cable point at the satellite end can be connected to three cable points at the switching device end, and three cable points are left for use. As needed, additional cable points used for transmitting important signals can be added so that the number of cable points used is greater than or equal to 3 and less than or equal to 3+2=5;

[0091] It can be obtained that one signal cable point at the satellite end is connected to at least two cable points at the switching device end.

[0092] (222) Determine the electrical connector used at the signal device end:

[0093] (2221) Assume that the number of cable points that need to be allocated to the electrical connector at the signal equipment end is w n Among the alternative electrical connectors, the electrical connector with the most cable points is d max Cable points;

[0094] If d max ≥w n , then among the alternative electrical connectors, select a cable with a number of points greater than or equal to w n An electrical connector with the minimum number of points is used as the electrical connector;

[0095] If d max <w n , then select the number of cable points as d maxThe electrical connector is used as the electrical connector used, as the electrical connector used;

[0096] The number of cable points in the electrical connector determined in this step is recorded as d n , and record the type and number of electrical connectors used.

[0097] For example:

[0098] Example 1: Assume that the number of cable points to which the electrical connector needs to be allocated at the signal equipment end is w n =33. Among the three alternative electrical connectors, the number of cable points is 24, 35, and 38 respectively. The electrical connector with the most cable points is d max = 38 cable points.

[0099] d max ≥w n , then among the alternative electrical connectors, select a cable with a number of points greater than or equal to w n The electrical connector with the minimum number of points is the electrical connector with 35 cable points, which is used as the electrical connector. The type of electrical connector used is recorded as the electrical connector with 35 cable points, the quantity is 1, and the number of cable points in the electrical connector determined in this step is d n =35.

[0100] Example 2: Assume that the number of cable points that need to be allocated to the electrical connector at the energy equipment end is w n =33. Among the three alternative electrical connectors, the number of cable points is 24, 26, and 28 respectively. Then an electrical connector has at most d max = 28 cable points.

[0101] d max <w n , then select the number of cable points as d max = 28 as the used electrical connector. Record the used electrical connector type as 28 cable point electrical connector, the quantity is 1, and the number of cable points in the electrical connector determined in this step is d n =28.

[0102] (2222) After the electrical connector is determined according to step (2221), the number of cable points to be allocated at the signal device end is x n for

[0103] x n =w n -d n

[0104] If x n ≤0, it means there is no cable point to be assigned, and the work of determining the electrical connector is finished. n >0, indicating that there are cable points that need to be assigned electrical connectors, then xn The value of w is assigned n , and return to step (2221) until x n ≤0.

[0105] (223) Count the types and numbers of electrical connectors determined according to step (222) to obtain the types and numbers of electrical connectors required by the signal device end.

[0106] In the present invention, the q value can be regarded as w n For example, if the total number of cable points at the signal end is q = 100, then when determining the total number of cable points, w n =q=100; Assume that the electrical connectors of 30 cable points are determined for the first time (i.e., d n =30), then the number of electrical connector points to be allocated at the signal end is x n =w n -d n =100-30=70,x n =70>0, indicating that there are cable points that need to be assigned electrical connectors, then x n The value of w is assigned n , that is, w n =x n =70, and return to step (2221) until x n ≤0.

[0107] 3. Based on the above design results, design the transfer line

[0108] The switching circuit includes two parts: the working circuit and the hardware self-test circuit. The working circuit refers to the circuit used during satellite electrical testing; the hardware self-test circuit refers to the circuit used in the hardware self-test state. In the switching device, a main switch is used to switch the hardware self-test circuit and the working circuit. The opening and closing of the main switch respectively indicate that the switching device enters the electrical testing working state or the hardware self-test state.

[0109] The switching line has multiple switches to control the on / off of each cable point between the equipment end of the switching device and the satellite end of the switching device, thereby realizing the access of different electrical measuring equipment to the satellite.

[0110] The on and off of each switch in the transfer line is controlled by the measurement and control computer; the use of switches with holding functions in the transfer line can reduce the number of switch operations.

[0111] In the switching line, the on-off rules of the cable points at the switching device end and the switching device satellite end are as follows:

[0112] On-off rule A: Each cable point at the equipment end of the switching device can be connected to any cable point at the satellite end of the switching device. The connection or disconnection of the cable points at the equipment end of the switching device and the satellite end of the switching device is controlled by different switches in the switching line. One cable point at the equipment end of the switching device can be connected to multiple cable points at the satellite end of the switching device, or all of them can be disconnected;

[0113] On-off rule B: Each cable point at the satellite end of the switching device can be connected to any cable point at the equipment end of the switching device. The connection or disconnection of the cable points at the equipment end of the switching device and the satellite end of the switching device is controlled by different switches in the switching line. A cable point at the satellite end of the switching device can only be connected to the cable points transmitting the same signal / energy at the equipment end of the switching device, or all of them can be disconnected. Among them, the same signal means that the meaning of the signal is the same, and the same energy means the same output end of the same energy device.

[0114] For example:

[0115] The same signal: refers to the same content of signal transmission. For example, if signals A and B are bus voltages, and signal C is load current, then the meanings of signals A and B are the same, the meanings of A and C are different, and the meanings of B and C are different.

[0116] The same energy: refers to the same output end of the same energy device. Assume that the negative end of the power supply of energy device 2 corresponds to the cable points numbered 9, 10, 11, and 12 at the equipment end of the transfer device. These four cable points are the same energy output. A cable point at the satellite end of the transfer device can be connected to one or more of these four cable points. If the cable point at the satellite end of the transfer device is connected to one or more cable points 9 to 12 at the equipment end of the transfer device, it cannot be connected to other cable points.

[0117] In the hardware self-test circuit, there are multiple self-test branch switches. One self-test branch switch corresponds to a cable point at the equipment end of the adapter. The number of self-test branch switches is the same as the number of cable points at the equipment end of the adapter. In the self-test state, only one self-test branch switch is in the closed state at a time, and the other self-test branch switches are in the open state.

[0118] In the hardware self-test circuit, there are multiple self-test status collection points. One self-test status collection point corresponds to a cable point at the satellite end of the adapter. The number of self-test status collection points is the same as the number of cable points at the satellite end of the adapter. In the self-test state, the on-off information of the line is collected and the results are transmitted to the measurement and control computer.

[0119] The following is an example of the design of the transfer line:

[0120] Assume that in the switching device, there are 4 cable points at the equipment end of the switching device (represented by A, B, C, and D in sequence), and there are 6 cable points at the satellite end of the switching device (represented by 1, 2, 3, 4, 5, and 6 in sequence). For the convenience of explanation, assume that the 4 cable points at the equipment end of the switching device transmit different energies respectively, and none of the 6 cable points at the satellite end of the switching device are idle (that is, all are transmitting energy / signals. In practice, the 4 cable points at the equipment end of the switching device may transmit the same energy or be idle, and the cable point at the satellite end of the switching device may be idle. If the cable point at the satellite end of the switching device is idle, it will be disconnected from all the cable points at the equipment end of the switching device). According to the above-mentioned design scheme, the schematic diagram of the designed switching line is as follows: Figure 4 shown.

[0121] Figure 4 In the example, the switching device is in the electrical test working state when the main switch is open, and in the hardware self-test state when the main switch is closed;

[0122] Figure 4 In the figure, the circle represents a switch and the square represents a cable point. The connection and disconnection between the cable point at the equipment end of the switching device and the cable point at the satellite end of the switching device is controlled by each switch, that is, the connection or disconnection between the cable point A at the equipment end of the switching device and the cable point 1 at the satellite end of the switching device is controlled by the A1 switch. A1 closure indicates that the cable points A and 1 are connected, and A1 disconnection indicates that the cable points A and 1 are disconnected.

[0123] The explanation of the on-off rule A in combination with the example: a cable point at the equipment end of the switching device can be connected to multiple cable points at the satellite end of the switching device, or all of them can be disconnected. Figure 4 As shown, the cable point A at the equipment end of the switching device can be connected to one or more of the cable points 1, 2, 3, 4, 5, and 6 at the satellite end, or all of them can be disconnected, that is, one or more of the switches A1, A2, A3, A4, A5, and A6 can be in a closed state, or all of them can be in an open state.

[0124] Explanation of on-off rule B in combination with the example: A cable point at the satellite end of the switching device can only be connected to a cable point at the device end of the switching device that transmits the same signal / energy, or all of them are disconnected. In this example, since none of the six cable points at the satellite end of the switching device is idle, and the four cable points at the device end of the switching device transmit different energy sources, cable point 1 at the satellite end of the switching device can only and must be connected to one of the cable points A, B, C, and D at the device end of the switching device, that is, among switches A1, B1, C1, and D1, only and must one of them be in the closed state.

[0125] In particular, in the hardware self-test circuit, the cable points A, B, C, and D at the equipment end of the switching device correspond to the self-test branch switch A, self-test branch switch B, self-test branch switch C, and self-test branch switch D, respectively. The number of self-test branch switches is 4, which is the same as the number of cable points at the equipment end of the switching device. In the self-test state, only one self-test branch switch is in the closed state at a time, and the switches of the other self-test branches are all in the open state.

[0126] In the hardware self-test circuit, cable points 1, 2, 3, 4, 5, and 6 at the satellite end of the adapter respectively correspond to a status collection point (the number is the same as the number of cable points at the satellite end of the adapter) - self-test collection 1, self-test collection 2, self-test collection 3, self-test collection 4, self-test collection 5, and self-test collection 6, which collect the on-off information of the line in the self-test state and transmit the results to the measurement and control computer.

[0127] The opening and closing of each switch is controlled by the measurement and control computer, that is, the measurement and control computer completes the on-off operation of each switch according to the on-off instructions compiled by the software; in order to reduce the number of operations of each switch, the selected switch has a holding function. At the same time, the switch control file of the measurement and control computer is transmitted to the transfer device for storage, which is convenient for subsequent self-test and other operations.

[0128] 4. Based on the above design results, design the method of using the switching device

[0129] In the present invention, the method of using the switching device is as follows:

[0130] (41) Connecting the satellite and the power supply and distribution test equipment: the power supply and distribution test equipment is connected to the equipment end of the adapter via a multi-core cable, and the satellite is connected to the satellite end of the adapter via an umbilical cable;

[0131] (42) Compiling a switch control file for the transfer line: In the measurement and control computer, according to the equipment information corresponding to the cable point at the equipment end of the transfer device, the equipment information corresponding to each cable point in the satellite electrical measurement umbilical cable, and the on-off rules A and B of the cable points at the equipment end of the transfer device and the satellite end of the transfer device described in step 3, determine the correspondence between each cable point at the equipment end of the transfer device and each cable point at the satellite end of the transfer device, and compile a switch control file for the transfer line;

[0132] (43) Perform software self-test and set the on / off of the cable point at the equipment end of the switching device and the cable point at the satellite end of the switching device;

[0133] (44) After the software self-check is passed and the on / off settings of the cable point at the equipment end of the switching device and the cable point at the satellite end of the switching device are completed, the switching device performs a hardware self-check;

[0134] (45) After the hardware self-test passes, adjust the main switch for switching between the hardware self-test circuit and the working circuit in the transfer circuit, switch to the working circuit, and carry out satellite electrical measurement work.

[0135] 5. Based on the above design results, design the software self-test process of the transfer device, set the on / off of the cable point at the device end of the transfer device and the cable point at the satellite end of the transfer device

[0136] In order to improve the reliability of the switching device, before conducting satellite electrical testing, a software self-check is required to verify the correctness of the compiled switch control file and set the on / off of the cable point at the equipment end of the switching device and the cable point at the satellite end of the switching device (i.e. step (43)). The details are as follows:

[0137] (43-1) The measurement and control computer compares the switch control file of the previous operation stored in the switching device with the switch control file generated in step (42). If they are the same, it is determined that the software self-check has passed and the on / off settings of the cable point at the equipment end of the switching device and the cable point at the satellite end of the switching device have been completed, and the process proceeds to step (44) for hardware self-check; if they are different, the process proceeds to step (43-2);

[0138] (43-2) Check whether the switch control file complies with the on-off rule A and the on-off rule B described in step 3; if so, it is determined that the software self-check has passed and the process proceeds to step (43-3); if not, it is determined that the software self-check has failed, an incorrect cable point number is indicated, and the process proceeds to step (42) to recompile the switch control file;

[0139] For example, in the control file of step 3, if two or more of the four switches A1, B1, C1, and D1 corresponding to output cable point 1 are in a closed state, or all are in an open state, the software self-check fails, prompting an incorrect cable point number, and entering step (42) to recompile the switch control file.

[0140] (43-3) The measurement and control computer controls the on and off of the line switch in the switching device according to the switch control file, and completes the on and off relationship setting of the cable points at the equipment end and the satellite end in the switching device.

[0141] 6. Based on the above design results, design the hardware self-test process of the adapter

[0142] After the software self-check is passed, the hardware self-check is performed to ensure that the on / off status of each switch in the transfer line is consistent with the switch control file (i.e., step (44)). Specifically:

[0143] (44-1) Under the control of the measurement and control computer, the main switch of the hardware self-test circuit and the working circuit in the switching circuit is controlled to switch to the hardware self-test circuit;

[0144] (44-2) Under the control of the measurement and control computer, the switch of one self-test branch is closed, and the switches of other self-test branches are in the open state;

[0145] (44-3) The status collection point transmits the collected line on / off information to the measurement and control computer and records it;

[0146] (44-4) After recording is completed, disconnect the self-test branch switch, repeat steps (44-2) to (44-3), and traverse all branch lines until all branch lines are self-tested;

[0147] (44-5) After all branch lines have completed self-test, disconnect all self-test branch switches, generate a test result file in the measurement and control computer, and compare it with the switch control file to determine whether they are consistent.

[0148] If the test result file is consistent with the switch control file, it means that the setting is correct, the hardware self-check has passed, and the subsequent work (step (45) in step 4) is carried out; if the test result file is inconsistent with the switch control file, it means that the setting is incorrect, the hardware self-check has failed, and the error is reported for the operator to handle.

[0149] For example, based on the sample described in step 3, the hardware self-test process in the design sample is as follows:

[0150] Figure 4 In the figure, A, B, C, and D represent the cable points at the equipment end of the switching device, and 1, 2, 3, 4, 5, and 6 represent the cable points at the satellite end of the switching device.

[0151] (L6-1) Under the control of the measurement and control computer, the main switch in the switching device is closed and the hardware self-test circuit is switched on;

[0152] (L6-2) Under the control of the measurement and control computer, the self-test branch switch A is closed, and the other self-test branch switches are in the open state;

[0153] (L6-3) The self-check status collection point transmits the collected on / off information of the line to the measurement and control computer and records it;

[0154] (L6-4) Similarly, close the self-test branch switches B, C, and D in sequence, traversing all branch lines until all four branch lines have completed self-test;

[0155] (L6-5) After all branch lines have completed self-test, disconnect all self-test branch switches, generate a test result file in the measurement and control computer, and compare it with the switch control file to determine whether they are consistent. If the test result file is consistent with the switch control file, it means that the settings are correct and the hardware self-test has passed; if the test result file is inconsistent with the switch control file, it means that the settings are incorrect and the hardware self-test has failed. Report the errors for the operator to handle.

[0156] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make possible changes and modifications to the technical solution of the present invention by using the above disclosed methods and technical contents without departing from the spirit and scope of the present invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall belong to the protection scope of the technical solution of the present invention. In the absence of conflict, the embodiments of the present application and the technical features in the embodiments can be combined with each other.

[0157] The contents not described in detail in the specification of the present invention belong to the well-known technologies of professionals in the field.

Claims

1. A power supply and distribution test equipment adapter for satellite electrical testing, characterized in that: It includes a switching device satellite end, a switching device equipment end, and a switching line; The satellite end of the switching device is connected to the satellite via an umbilical cable; The equipment end of the switching device is connected to the power supply and distribution test equipment through a multi-core cable; The switching line sets the on-off relationship between each cable point on the equipment end of the switching device and the satellite end of the switching device according to the electrical measurement requirements of different satellites.

2. A satellite power supply and distribution test equipment adapter according to claim 1, characterized in that: The interface of the satellite end of the adapter is an electrical connector, and the type and quantity of the electrical connector match the branch end of the umbilical cable.

3. A satellite power supply and distribution test equipment adapter according to claim 1, characterized in that: The equipment end of the adapter is divided into an energy equipment end and a signal equipment end. The energy equipment end is used to connect the energy equipment, and the signal equipment end is used to connect the signal acquisition and control equipment. Among them, the energy equipment provides energy for the satellite during electrical measurement, and the signal acquisition and control equipment processes the data obtained during satellite electrical measurement.

4. A satellite power supply and distribution test equipment adapter according to claim 3, characterized in that: The interfaces of the energy device end and the signal device end are both electrical connectors; The energy device end is connected to the energy device through a multi-core cable, and the signal device end is connected to the signal acquisition and control device through a multi-core cable.

5. A satellite power supply and distribution test equipment adapter according to claim 3, characterized in that: The types of electrical connectors connected to the energy equipment end are all the same. The electrical connector used by the energy equipment end is an electrical connector with a minimum number of cable points greater than or equal to a among the alternative electrical connectors. One electrical connector corresponds to one energy equipment. The number of electrical connectors s at the energy equipment end is s=n max +n 冗余 ; where a = 2a s , a s The number of cable points designed for each energy device output, n max is the maximum number of energy devices required for different satellite electrical measurements, n 冗余 Indicates the number of redundant electrical connectors designed to improve equipment reliability.

6. A satellite power supply and distribution test equipment adapter according to claim 3, characterized in that: The type and number of electrical connectors used at the signal device end are determined in the following manner: (61) Determine the number of cable points q at the signal equipment end of the switching device as q = 2 × q max , where q max When measuring for different satellites, the maximum number of signal cable points at the satellite end of the switching device indicates that one signal cable point at the satellite end is connected to at least two cable points at the equipment end of the switching device; (62) Assume that the number of cable points that need to be allocated to the electrical connector at the signal equipment end is w n Among the alternative electrical connectors, the electrical connector with the most cable points is d max cable points; if d max ≥w n , then among the alternative electrical connectors, select a cable with a number of points greater than or equal to w n The electrical connector with the minimum number of points is used as the electrical connector; if d max <w n , then select the number of cable points as d max The electrical connector is used as the electrical connector used; the number of cable points in the electrical connector determined in this step is recorded as d n , and record the type and number of electrical connectors used; (63) Calculate the number of cable points x to be allocated at the signal device end after the electrical connector is determined according to step (62) n For x n =w n -d n , if x n ≤0, then end; if x n >0, then x n The value of w is assigned n , and return to step (62) until x n ≤0, and record the type and number of electrical connectors used; (64) Count the types and numbers of electrical connectors determined according to steps (62) to (63) to obtain the types and numbers of electrical connectors required by the signal device end of the switching device.

7. A satellite power supply and distribution test equipment adapter according to claim 3, characterized in that: The switching circuit includes a working circuit and a hardware self-test circuit. The working circuit is a circuit used in the satellite electrical test state, and the hardware self-test circuit is a circuit used in the hardware self-test state. The opening and closing of a main switch respectively indicate that the switching device enters the electrical measurement working state or the hardware self-test state; There are multiple switches in the transfer line to control the on-off between each cable point at the equipment end and the satellite end, so as to realize the access of different electrical measurement equipment to the satellite; the on-off of each switch in the transfer line is controlled by the measurement and control computer; the use of switches with holding function in the transfer line can reduce the number of switch actions; The on-off rules for the cable points at the switching device end and the satellite end include: On-off rule A: Each cable point at the equipment end of the switching device can be connected to any cable point at the satellite end of the switching device. The connection or disconnection of the cable points at the equipment end of the switching device and the satellite end of the switching device is controlled by different switches in the switching line. One cable point at the equipment end of the switching device can be connected to multiple cable points at the satellite end of the switching device, or all of them can be disconnected; On-off rule B: Each cable point at the satellite end of the switching device can be connected to any cable point at the equipment end of the switching device. The connection or disconnection of the cable points at the equipment end of the switching device and the satellite end of the switching device is controlled by different switches in the switching line. A cable point at the satellite end of the switching device can only be connected to the cable points transmitting the same signal or energy at the equipment end of the switching device, or all of them can be disconnected; the same signal means that the content of the signal transmission is the same, and the same energy means the same output end of the same energy device; The hardware self-test circuit includes multiple self-test branch switches, one self-test branch switch corresponds to one cable point at the equipment end of the switching device, and the number of self-test branch switches is the same as the number of cable points at the equipment end of the switching device. In the self-test state, only one self-test branch switch is in a closed state at a time, and the other self-test branch switches are in an open state; The hardware self-test circuit also includes multiple self-test status collection points, one self-test status collection point corresponds to a cable point at the satellite end of the switching device, and the number of self-test status collection points is the same as the number of cable points at the satellite end of the switching device.

8. The method for using the satellite power supply and distribution test equipment adapter as claimed in claim 7, characterized in that include: (71) The power supply and distribution test equipment is connected to the equipment end of the switching device via a multi-core cable, and the satellite is connected to the satellite end of the switching device via an umbilical cable; (72) In the measurement and control computer, according to the equipment information corresponding to the cable point at the equipment end of the switching device, the equipment information corresponding to each cable point in the satellite electrical measurement umbilical cable, and the on-off rule A and the on-off rule B, the corresponding relationship between each cable point at the equipment end of the switching device and each cable point at the satellite end of the switching device is determined, and a switch control file of the switching line is compiled; (73) using the switch control file to perform software self-test and set the on / off of the cable point at the device end of the switching device and the cable point at the satellite end of the switching device; (74) After the software self-test passes and the on / off settings of the device-side cable point and the satellite-side cable point are completed, a hardware self-test is performed using the hardware self-test circuit; (75) After the hardware self-test passes, adjust the main switch of the hardware self-test circuit and the working circuit in the transfer circuit, switch to the working circuit, and use the working circuit to perform satellite electrical measurement work.

9. The method for using the satellite power supply and distribution test equipment adapter according to claim 8, characterized in that: The software self-check is performed by using the switch control file to set the on / off of the cable point at the equipment end of the switching device and the cable point at the satellite end of the switching device, specifically: (73-1) The measurement and control computer compares the switch control file stored in the previous operation with the switch control file generated in step (72). If they are the same, it is determined that the software self-check has passed and the on / off setting of the cable point at the equipment end of the switching device and the cable point at the satellite end of the switching device is completed, and the process goes to step (74); if they are different, the process goes to step (73-2); (73-2) Check whether the switch control file generated in step (72) complies with the on-off rule A and the on-off rule B; if so, it is determined that the software self-check has passed and the process proceeds to step (73-3); if not, it is determined that the software self-check has failed, an incorrect cable point number is indicated, and the process proceeds to step (72) to recompile the switch control file; (73-3) The measurement and control computer controls the on and off of the line switch in the switching device according to the switch control file, and completes the on and off relationship setting of the cable points at the equipment end and the satellite end in the switching device.

10. The method for using the satellite power supply and distribution test equipment adapter according to claim 8, characterized in that: The hardware self-test circuit is used to perform the hardware self-test, specifically: (74-1) Under the control of the measurement and control computer, the main switch of the hardware self-test circuit and the working circuit in the switching circuit is controlled to switch to the hardware self-test circuit; (74-2) Under the control of the measurement and control computer, the switch of one self-test branch is closed, and the switches of other self-test branches are in the open state; (74-3) Each detection status collection point transmits the collected line on / off information to the measurement and control computer and records it; (74-4) After recording is completed, disconnect the switch of the self-test branch, repeat steps (74-2) to (74-3), and traverse all self-test branches; (74-5) After all branch lines have completed self-test, disconnect the switches of all self-test branches, generate a test result file in the measurement and control computer, and compare it with the switch control file to determine whether they are consistent; if they are consistent, the hardware self-test passes; if they are inconsistent, the hardware self-test fails and the error is reported.

Images