CN103312424A - Control method and system for multiple switches in automatic testing system - Google Patents

Abstract

The invention discloses a multi-switch control method and control system in an automatic test system, wherein the method includes the steps of: a. abstracting all switch requirements in the automatic test system into a switch network virtual device, virtualizing the switch network virtual device Configure device information, and save the configured virtual device information; b provide a control interface for connecting and disconnecting routes, and the automatic test system completes the control of routing in the switch network virtual device by calling the control interface for connecting and disconnecting routes ; c Analyze the route according to the connection rules in the virtual device information, and call the corresponding switch driver to complete the connection and disconnection of the specific switch. The present invention uses the switch network virtual device to establish the connection rules and routing information of the complex switch system, uses the switch network system to encapsulate the control of the complex switch system, and provides a simple routing control interface for it, which can reduce the difficulty of development and control, and shorten the development cycle .

Description

Multi-switch control method and control system in automatic test system

technical field

The invention relates to a multi-switch control method in an automatic test system and a multi-switch control system in the automatic test system.

Background technique

The microwave switch is the center of signal transmission and distribution in the microwave automatic test system. Using the microwave switch matrix can make full use of test resources, reduce the workload of switching various instruments, prolong the service life of the instrument, and improve the test efficiency. As new products are introduced, the complexity of the device under test continues to grow, resulting in a dramatic increase in the number of test points that must be connected. The sharp increase in the number of test points also means a sharp increase in the complexity of the switching system in the automatic test system. In such a complex test system, there will be a need to manage multiple switch modules, create routes across multiple switch modules to complete signal transmission and The situation of the distribution.

At present, the control of the switch system in the test system is mainly for the individual control of different switch modules. The design of the switch routing is also carried out between the channels inside the switch. It is impossible to manage multiple switch modules at the same time, and it is impossible to design and identify cross The routing of switch modules increases the difficulty for the management of complex switch systems.

Figure 1 is a schematic diagram of the traditional control mode of the switch in the automatic test system. In this traditional way, the automatic test system controls different switches separately, and the connection relationship between the switches cannot be reflected in the test system. It can only be controlled by the test system Manual documentation by developers adds to the difficulty of developing and controlling complex test systems.

Contents of the invention

The task of the present invention is to solve the defects of the multi-switch control technology in the automatic test system in the prior art, provide a multi-switch control method in the automatic test system, and a multi-switch control system in the automatic test system.

Its technical solutions are:

A method for controlling multiple switches in an automatic test system, comprising the steps of:

a Abstract all switch requirements in the automatic test system into a switch network virtual device, configure the virtual device information for the switch network virtual device, and save the configured virtual device information; the above virtual device information includes the software and software of each switch Hardware information, virtual device port information, connection rule information between switches, and routing information between virtual device ports; the connection rule information between the above switches includes hard-wiring rules and mutual exclusion rules, which are used to describe the connection between ports of different switch modules. Physical connection requirements, and connection exclusion requirements between virtual device ports;

b Provide the control interface for connecting and disconnecting the route, and the automatic test system completes the control of the route in the switch network virtual device by calling the control interface for connecting and disconnecting the route;

c. Analyze the route according to the connection rules in the above virtual device information, and call the corresponding switch driver to complete the connection and disconnection operation of the specific switch.

The above step a also includes the following steps:

a1 creates a switch network virtual device;

a2 Add all the switches in the automatic test system to the switch network virtual device, and record the software and hardware information including the switch driver, program control address and topology;

a3 Virtualize the ports of all switches into the ports of the switch network virtual device;

a4 Create a mutually exclusive set between the ports of the switch network virtual device;

a5 Create a hardwired set between the ports of the switch network virtual device;

a6 Use mutual exclusion and hard-wiring rules to create a routing set between the ports of the switch network virtual device;

a7 saves virtual device information.

Above-mentioned step a6 also comprises the following steps:

a61 gets the two channels to establish routing, namely ch1 and ch2 channels, and creates a stack;

a62 judges whether the ch1 and ch2 channels are in the mutually exclusive configuration, if so, returns the information that cannot be connected, otherwise executes a63;

a63 judges whether the ch1 and ch2 channels belong to the same switch module, if not, then execute step a64; if yes, then execute step a65;

a64 searches for a hardwired channel that can be connected to the ch1 channel from the hardwired set, if found, uses the channel as a new ch1 channel, and pushes the found hardwired and original ch1 channel information into In the memory stack, execute step a63; if not found, execute a66;

a65 judges whether the ch1 and ch2 channels can be connected, if not, execute step a66; if connectable, execute step a67;

a66 judges whether the hardwired stack element is empty, if it is not empty, the element at the top of the hardwired stack is popped out, and step a64 is executed to continue to search for other hardwired lines; if the element set of the stack is empty, then return the unconnectable information;

a67 uses the two input channels and the elements in the stack to organize the routing information and return the routing information.

Above-mentioned step b also comprises the following steps:

b1 selects the stored virtual device information;

b2 parses virtual device information;

b3 obtains the configured routing information from the virtual device information;

b4 calls the operation of connecting or disconnecting the route to complete the control of the switch network virtual device.

Above-mentioned step c also comprises the following steps:

c1 obtains the driver information and hardware address of each switch module from the stored virtual device information;

c2 calls the driver of each switch to initialize the switch module and save the session handle to the memory;

c3 gets the routing information to be connected;

c4 segments the route according to the hard-wiring on the routing path, and the ports on each segment of the route belong to the same switch;

c5 loops through each route, finds the session handle of the current switch from the memory, uses the handle to call the connection method of the switch, and completes the connection operation of the route;

c6 closes the session handle.

Above-mentioned step c also comprises the following steps:

c7 obtains the driver information and hardware address of each switch module from the stored virtual device information;

c8 calls the driver of each switch to initialize the switch module and save the session handle to the memory;

c9 gets the routing information to be disconnected;

c11 divides the route according to the hard wiring on the routing path, and the ports on each route belong to the same switch;

c12 loops through each route, finds the session handle of the current switch from the memory, uses the handle to call the disconnect method of the switch, and completes the disconnection operation of the route;

c13 closes the session handle.

A multi-switch control system in an automatic test system, comprising:

The switch network modeling module is used to abstract all the switch requirements in the automatic test system into a switch network virtual device, configure the virtual device information for the switch network virtual device, and save the configured virtual device information; the above virtual device The information includes the software and hardware information of each switch, the port information of the virtual device, the connection rule information between the switches, and the routing information between the virtual device ports; the connection rule information between the above switches includes hardwire rules and mutual exclusion rules, respectively for Describe the physical connection requirements between different switch module ports, and the connection exclusion requirements between virtual device ports;

The routing control module is used to provide a control interface for connecting and disconnecting the routing, and the automatic test system completes the control of the routing in the switch network virtual device by calling the control interface for connecting and disconnecting the routing;

The data storage and analysis module and the switch control module are used to analyze the route according to the connection rules in the above virtual device information, and call the corresponding switch driver to complete the connection and disconnection of the specific switch.

The present invention has the following beneficial technical effects:

1. The present invention realizes the unified control of the complex switch system in the automatic test system. The complex switch system composed of multiple switches (modules) is abstracted into a "switch network virtual device", and the connection of channels between different switch modules is designed as "hard wiring". On the basis of designing corresponding connection rules, intelligent switch system management and routing path management functions across switch modules.

2. The present invention improves the development efficiency of the automatic test system. The present invention can perform intelligent switch management and routing configuration across switch modules. When test system developers use the method of the present invention to control complex switch systems, they no longer need to understand the internal connection relationships and rules of the switch system, and only need to understand the switch network. Routing can only be connected or disconnected, which reduces the difficulty of controlling the complex switch system and improves the development efficiency of the automatic test system.

3. The present invention has good maintainability. The invention encapsulates the business functions of the switch system and provides a unified control interface, that is, routing. If the internal configuration of the switch system is changed, such as the switch module is replaced or the connection rules between modules are changed, in this case, only the external routing configuration of the switch system remains unchanged, and only the internal configuration of the switch network is partially modified. , while the control of the test system on the switch network remains unchanged, new requirements can be met, and the maintenance cost of the test system is reduced.

Description of drawings

Fig. 1 is the functional block diagram of the complex switch system controlled by the traditional automatic test system.

Fig. 2 is an overall flow chart of an embodiment of a multi-switch control method in the automatic test system of the present invention.

FIG. 3 is a flow chart of creating a switch network virtual device in the manner of FIG. 2 .

FIG. 4 is a flow chart of creating a switch network virtual device route by using connection rules in the manner shown in FIG. 2 .

FIG. 5 is a flow chart of the automatic test system controlling and switching network virtual devices in the manner shown in FIG. 2 .

FIG. 6 is a flow chart of completing connection routing operations using connection rules and routing information in the manner shown in FIG. 2 .

FIG. 7 is a flow chart of using connection rules and routing information to complete the disconnection routing operation in the manner in FIG. 2 .

FIG. 8 is a schematic block diagram of an embodiment of a multi-switch control system in the automatic test system of the present invention.

Detailed ways

The technical solution of the present invention will be described in further detail below according to the accompanying drawings.

Before going into detail, a few concepts are introduced first:

Channel: Refers to the connection point on the switch module.

Mutual exclusion: It is a connection rule used to ensure that specific channels cannot be connected. Mutexes are often used for security purposes.

Hardwiring: It is the physical connection between switch channels, such as wiring, bus-like, matrix expansion plugs, etc.

Routing: A signal path that may pass through multiple ports of a switch.

Switch network virtual device: represents a switch system, and a virtual device is composed of configurations such as switch modules, channels, hardwires, buses, mutexes, and routes.

As shown in Figure 2, a control method for multiple switches in an automatic test system includes the following steps:

Step 1: abstract all switch requirements in the automatic test system into a switch network virtual device, configure virtual device information for the switch network virtual device, and save the configured virtual device information. The switch network virtual device is a virtual software object, which is combined and abstracted from all the switch modules in the system. The switch network virtual device records the software and hardware information of these switch modules. The switch network virtual device has a port attribute, and the ports of all the switch modules in the test system form the ports of the switch network virtual device. The above virtual device information includes software and hardware information of each switch, port information of virtual devices, connection rule information between switches, and routing information between virtual device ports; the connection rule information between the above switches includes hardwire rules and mutual exclusion rules, They are respectively used to describe the physical connection requirements between different switch module ports, and the connection exclusion requirements between virtual device ports.

Step 2: Provide a control interface for connecting and disconnecting the route, and the automatic test system completes the control of the route in the switch network virtual device by calling the control interface for connecting and disconnecting the route.

Step 3: Analyze the route according to the connection rules in the above virtual device information, and call the corresponding switch driver to complete the connection and disconnection of the specific switch.

With reference to Figure 3, the above step 1 also includes the following steps:

Step 101: Create a switch network virtual device;

Step 102: Add all the switches in the automatic test system to the switch network virtual device, and record the software and hardware information including the switch driver, program control address, and topology;

Step 103: Virtualize the ports of all switches into ports of the switch network virtual device;

Step 104: Create a mutually exclusive set between ports of the switch network virtual device;

Step 105: Create a hardwired set between ports of the switch network virtual device;

Step 106: using mutual exclusion and hard-wiring rules, creating a routing set between ports of the switch network virtual device;

Step 107: Save the virtual device information.

In conjunction with FIG. 4, the above step 106 also includes the following steps:

61 Get the two channels for routing, namely ch1 and ch2 channels, and create a stack;

62. Determine whether the ch1 and ch2 channels are in a mutually exclusive configuration, and if so, return information that cannot be connected, otherwise execute 63;

63 judge whether the ch1 and ch2 channels belong to the same switch module, if not, then perform step 64; if yes, then perform step 65;

64 Search the hardwired channel that can be connected to the ch1 channel from the hardwired collection, if found, use the channel as a new ch1 channel, and push the found hardwired and original ch1 channel information into In the memory stack, execute step 63; if not found, execute 66;

65 judge whether the ch1 and ch2 channels can be connected, if not, execute step 66; if connectable, execute step 67;

66 judge whether the hardwired stack element is empty, if it is not empty, then the element at the top of the hardwired stack is popped out, and step a64 is performed to continue to search for other hardwired; if the element collection of the stack is empty, then return the unconnectable information;

67 uses the two input channels and the elements in the stack to organize the routing information, and returns the routing information.

With reference to Figure 5, the above step 2 also includes the following steps:

Step 201: Select the stored virtual device information;

Step 202: Parse virtual device information;

Step 203: Obtain configured routing information from virtual device information;

Step 204: Invoke the operation of connecting or disconnecting the route to complete the control of the switch network virtual device.

With reference to Figure 6, the above step 3 also includes the following steps:

Step 301: Obtain the drive information and hardware address of each switch module from the stored virtual device information;

Step 302: call the driver of each switch to initialize the switch module, and save the session handle into the memory;

Step 303: Obtain the routing information to be connected;

Step 304: Segment the route according to the hard wiring on the routing path, and the ports on each segment of the route belong to the same switch;

Step 305: Cycle each route, find the session handle of the current switch from the memory, use the handle to call the connection method of the switch, and complete the connection operation of the route;

Step 306 closes the session handle.

In conjunction with Figure 7, the above step 3 also includes the following steps:

Step 401: Obtain the drive information and hardware address of each switch module from the stored virtual device information;

Step 402: call the driver of each switch to initialize the switch module, and save the session handle into the memory;

Step 403: Get the routing information to be disconnected;

Step 404: Segment the route according to the hard wiring on the routing path, and the ports on each segment of the route belong to the same switch;

Step 405: Cycle through each section of route, find the session handle of the current switch from the memory, use the handle to call the disconnect method of the switch, and complete the disconnection operation of this section of route;

Step 406: close the session handle.

As shown in Figure 8, a multi-switch control system in an automatic test system includes:

The switch network modeling module is used to abstract all the switch requirements in the automatic test system into a switch network virtual device, configure the virtual device information for the switch network virtual device, and save the configured virtual device information; the above virtual device The information includes the software and hardware information of each switch, the port information of the virtual device, the connection rule information between the switches, and the routing information between the virtual device ports; the connection rule information between the above switches includes hardwire rules and mutual exclusion rules, respectively for Describe the physical connection requirements between different switch module ports, and the connection exclusion requirements between virtual device ports;

The routing control module is used to provide a control interface for connecting and disconnecting the routing, and the automatic test system completes the control of the routing in the switch network virtual device by calling the control interface for connecting and disconnecting the routing;

The data storage and analysis module and the switch control module are used to analyze the route according to the connection rules in the above virtual device information, and call the corresponding switch driver to complete the connection and disconnection of the specific switch.

The present invention abstracts a complex switch system composed of multiple switch modules into a "switch network virtual device", designs the connection of channels between different switch modules as "hard-wired", and realizes intelligent switching on the basis of designing corresponding connection rules. switch system management and routing path management functions across switch modules, when test system developers use the method of the present invention to control complex switch systems, they no longer need to understand the internal connection relationships and rules of the switch system, and only need to understand the routing of the switch network It only needs to perform the connection or disconnection operation, which reduces the difficulty of controlling the complex switch system and improves the development efficiency of the automatic test system.

The invention can encapsulate the business functions of the switch system and provide a unified control interface: routing for the test system. If the internal configuration of the switch system is changed, such as the switch module is replaced or the connection rules between modules are changed, in this case, only the external routing configuration of the switch system remains unchanged, and only the internal configuration of the switch network is partially modified. , while the control of the test system on the switch network remains unchanged, new requirements can be met, and the maintenance cost of the test system is reduced.

Relevant technical contents not mentioned in the above methods can be realized by adopting or referring to existing technologies.

Various modifications and changes can be made to the present invention by those skilled in the art. Thus, the present invention covers the modifications and changes that come within the scope of the appended claims and their equivalents.

Claims (7)

1. a control method of multi-switch in automatic test system, it is characterized in that comprising the steps: a Abstract all switch requirements in the automatic test system into a switch network virtual device, configure the virtual device information for the switch network virtual device, and save the configured virtual device information; the above virtual device information includes the software and software of each switch Hardware information, virtual device port information, connection rule information between switches, and routing information between virtual device ports; the connection rule information between the above switches includes hard-wiring rules and mutual exclusion rules, which are used to describe the connection between ports of different switch modules. Physical connection requirements, and connection exclusion requirements between virtual device ports; b Provide the control interface for connecting and disconnecting the route, and the automatic test system completes the control of the route in the switch network virtual device by calling the control interface for connecting and disconnecting the route; c. Analyze the route according to the connection rules in the above virtual device information, and call the corresponding switch driver to complete the connection and disconnection operation of the specific switch. 2. the control method of multi-switch in a kind of automatic test system according to claim 1, it is characterized in that above-mentioned step a also comprises the following steps: a1 creates a switch network virtual device; a2 Add all the switches in the automatic test system to the switch network virtual device, and record the software and hardware information including the switch driver, program control address and topology; a3 Virtualize the ports of all switches into the ports of the switch network virtual device; a4 Create a mutually exclusive set between the ports of the switch network virtual device; a5 Create a hardwired set between the ports of the switch network virtual device; a6 Use mutual exclusion and hard-wiring rules to create a routing set between the ports of the switch network virtual device; a7 saves virtual device information. 3. the control method of multi-switch in a kind of automatic test system according to claim 2, it is characterized in that above-mentioned step a6 also comprises the following steps: a61 gets the two channels to establish routing, namely ch1 and ch2 channels, and creates a stack; a62 judges whether the ch1 and ch2 channels are in the mutually exclusive configuration, if so, returns the information that cannot be connected, otherwise executes a63; a63 judges whether the ch1 and ch2 channels belong to the same switch module, if not, then execute step a64; if yes, then execute step a65; a64 searches for a hardwired channel that can be connected to the ch1 channel from the hardwired set, if found, uses the channel as a new ch1 channel, and pushes the found hardwired and original ch1 channel information into In the memory stack, execute step a63; if not found, execute a66; a65 judges whether the ch1 and ch2 channels can be connected, if not, execute step a66; if connectable, execute step a67; a66 judges whether the hardwired stack element is empty, if it is not empty, the element at the top of the hardwired stack is popped out, and step a64 is executed to continue to search for other hardwired lines; if the element set of the stack is empty, then return the unconnectable information; a67 uses the two input channels and the elements in the stack to organize the routing information and return the routing information. 4. the control method of multi-switch in a kind of automatic test system according to claim 1, it is characterized in that above-mentioned step b also comprises the following steps: b1 selects the stored virtual device information; b2 parses virtual device information; b3 obtains the configured routing information from the virtual device information; b4 calls the operation of connecting or disconnecting the route to complete the control of the switch network virtual device. 5. the control method of multi-switch in a kind of automatic test system according to claim 1, it is characterized in that above-mentioned step c also comprises the following steps: c1 obtains the driver information and hardware address of each switch module from the stored virtual device information; c2 calls the driver of each switch to initialize the switch module and save the session handle to the memory; c3 gets the routing information to be connected; c4 segments the route according to the hard-wiring on the routing path, and the ports on each segment of the route belong to the same switch; c5 loops through each route, finds the session handle of the current switch from the memory, uses the handle to call the connection method of the switch, and completes the connection operation of the route; c6 closes the session handle. 6. the control method of multi-switch in a kind of automatic test system according to claim 5, it is characterized in that above-mentioned step c also comprises the following steps: c7 obtains the driver information and hardware address of each switch module from the stored virtual device information; c8 calls the driver of each switch to initialize the switch module and save the session handle to the memory; c9 gets the routing information to be disconnected; c11 divides the route according to the hard wiring on the routing path, and the ports on each route belong to the same switch; c12 loops through each route, finds the session handle of the current switch from the memory, uses the handle to call the disconnect method of the switch, and completes the disconnection operation of the route; c13 closes the session handle. 7. A multi-switch control system in an automatic test system, characterized in that it comprises: The switch network modeling module is used to abstract all the switch requirements in the automatic test system into a switch network virtual device, configure the virtual device information for the switch network virtual device, and save the configured virtual device information; the above virtual device The information includes the software and hardware information of each switch, the port information of the virtual device, the connection rule information between the switches, and the routing information between the virtual device ports; the connection rule information between the above switches includes hardwire rules and mutual exclusion rules, respectively for Describe the physical connection requirements between different switch module ports, and the connection exclusion requirements between virtual device ports; The routing control module is used to provide a control interface for connecting and disconnecting the routing, and the automatic test system completes the control of the routing in the switch network virtual device by calling the control interface for connecting and disconnecting the routing; The data storage and analysis module and the switch control module are used to analyze the route according to the connection rules in the above virtual device information, and call the corresponding switch driver to complete the connection and disconnection of the specific switch.

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