CN205539299U - Detection apparatus for testable connection exactness - Google Patents

Abstract

The utility model discloses a detection apparatus for testable connection exactness, it has the circuit of awaiting measuring board, surveys test panel and controller. The circuit board that awaits measuring has a plurality of first ports, each first at least one electronic component of port electric connection. Each first port electric connection's electronic component makes each first port have a corresponding resistance value. It has a plurality of second ports, second port through -connection line connection to first port to survey test panel. Controller electric connection surveys test panel for control has been connected to the second port output test signal of first port. The test signal is used for detecting the corresponding resistance value of first port to whether the connection according to in order to judge first port and second port is correct.

Description

Detection device to test the correctness of the connection

technical field

The utility model relates to a detection device capable of testing connection correctness, in particular to a detection device for identifying whether the connection between a circuit board to be tested and a test board is correct.

Background technique

When testing the circuit board to be tested, it is necessary to manually connect the circuit board to be tested with the test board. Generally speaking, the circuit board to be tested and the test board respectively have a plurality of slots. When testing, the user must connect the slots on the test board to the corresponding slots on the circuit board to be tested through a flat cable. Accordingly, the test board can correctly detect the circuit board to be tested.

However, in actual examples, there is no clear way to mark the pairing connection between the sockets on the circuit board to be tested and the sockets on the test board, and the user is likely to connect the sockets on the circuit board to be tested. to a non-corresponding slot on the test board, thereby causing a detection error of the circuit board to be tested, or causing damage to the circuit board to be tested.

Contents of the invention

The utility model provides a detection device capable of testing the correctness of the connection, so as to solve the problem that the circuit board to be tested may be detected incorrectly or damaged when the connection between the circuit board to be tested and the test board is wrong.

The detection device capable of testing connection correctness disclosed by the utility model includes a circuit board to be tested, a test board and a controller. The circuit board to be tested has a plurality of first ports, and each first port is electrically connected to at least one electronic component. The electronic components electrically connected to each first port make each first port have a corresponding resistance value. The test board has a plurality of second ports, and the second ports are connected to the first ports through connecting wires. The controller is electrically connected to the test board, and is used for controlling the second port connected to the first port to output a test signal. The test signal is used to test the corresponding resistance value of the first port, so as to determine whether the connection between the first port and the second port is correct.

According to the detection device for testing connection correctness disclosed in the above utility model, different electronic components are provided for each first port on the circuit board to be tested, so that each first port has a different corresponding resistance value, When the first port and the second port are connected through a connecting wire, the controller pre-controls the second port to output a test signal to the first port to test the corresponding resistance value of the first port, so as to judge the difference between the first port and the second port. Whether the connection is correct, to reduce the chance of wrong connection between the first port and the second port at the beginning of detection, and has the effect of protecting the circuit board to be tested.

The above description about the disclosed content of the present utility model and the following description of the implementation are used to demonstrate and explain the spirit and principle of the present utility model, and provide further explanation of the patent application scope of the present utility model.

Description of drawings

FIG. 1 is a schematic diagram of a detection device according to an embodiment of the present invention.

FIG. 2 is a functional block diagram of a detection device according to an embodiment of the present invention.

In the picture:

10 detection device

11 Circuit board under test

111. PX1 first port

112 resistors

13 test board

131. PX2 second port

15 Controllers

17 connecting wire

t1 first connection port

t2 Second connection terminal

RX resistor

detailed description

The detailed features and advantages of this utility model are described in detail below in the implementation manner, and its content is enough to make any person skilled in the art understand the technical content of this utility model and implement it accordingly, and according to the content disclosed in this specification, claims and drawings Any person skilled in the art can easily understand the purpose and advantages of the utility model. The following examples further describe the viewpoints of the present utility model in detail, but do not limit the scope of the present utility model in any way.

Please refer to FIG. 1 and FIG. 2 together. FIG. 1 is a schematic diagram of a detection device according to an embodiment of the present invention, and FIG. 2 is a functional block diagram of the detection device according to an embodiment of the present invention. As shown in the figure, the detection device 10 has a circuit board to be tested 11 , a test board 13 and a controller 15 . The circuit board 11 to be tested has a plurality of first ports 111 , and each first port 111 is electrically connected to at least one electronic component 112 . Each first port 111 is electrically connected to the electronic component 112 so that each first port 111 has a corresponding resistance value. The test board 13 has a plurality of second ports 131 , and the second ports 131 are connected to the first ports 111 through the connecting wires 17 . The controller 15 is electrically connected to the test board 13 for controlling the second port 131 connected to the first port 111 to output a test signal. The test signal is used to test the corresponding resistance value of the first port 111 , so as to determine whether the connection between the first port 111 and the second port 131 is correct.

In one embodiment, each first port 111 of the circuit board under test 11 has a plurality of first connection terminals, and each second port 131 of the test board 13 has a plurality of second connection terminals. The first connection ends of the first port 111 and the second connection ends of the second port 131 have the same number, but not limited thereto. When the second port 131 is connected to the first port 111 , each first connection end is correspondingly connected to a second connection end. The electronic components 112 are, for example, light emitting diodes, resistors or other suitable electronic components. The electronic component 112 is electrically connected to one of the first connection ends of the first port 111. In other words, each first port 111 is electrically connected to at least one electronic component 112, and the electronic component 112 is electrically connected to one of the first ports 111. A first connection end, but not limited thereto. In other embodiments, there may also be more electronic components electrically connected to other first connection ends of the first port 111 .

Before the control board 15 detects the circuit board 11 to be tested through the test board 13, it is necessary to connect the second port 131 on the test board 13 to the correct first port 111, so that the control board 15 can send the corresponding detection signal to the correct first port 111 . Therefore, in this embodiment, after the test board 13 and the circuit board under test 11 are connected through the connecting wire 17, the controller 15 will first output a test signal to the circuit board under test 11 through the test board 13 before starting to detect, and judge Whether the connection between the first port 111 and the second port 131 is correct. That is to say, the controller 15 controls the second port 113 connected to the first port 111 through the connection line 17 to output a test signal, and uses the test signal to test the corresponding resistance value of the first port 111, and then judge the first port 111 and Whether the connection of the second port 113 is correct.

For convenience of description, the first port PX1 , the second port PX2 , the first connection terminal t1 , the second connection terminal t2 and the resistor RX shown in FIG. 2 are used for illustration. As shown in FIG. 2 , the second port PX2 of the test board 13 is connected to the first port PX1 of the circuit board 11 to be tested through a connecting wire 17 . Each first connection end of the first port PX1 is electrically connected to a second connection end of a second port PX2. The second connection terminal t2 is preset to test whether the second port PX2 is connected to the correct pin of the first port before the control board 15 detects the circuit board 11 to be tested.

The controller outputs a test signal to the first connection terminal t1 through the second connection terminal t2 to test the resistance value of the resistor RX connected to the first connection terminal t1. The test signal is, for example, a test current with a predicted current value. The second connection terminal t2 outputs the test current to the resistor RX through the first connection terminal t1, and measures the voltage difference between the two ends of the resistor RX, so that the controller 15 will terminal voltage difference, calculate the resistance value of the resistor RX. In one embodiment, the voltage difference between the two ends of the resistor RX can be measured by the circuit board 11 to be tested, and the circuit board 11 to be tested returns a feedback message to the controller 15 according to the voltage difference between the two ends of the resistor RX, so that the controller 15 according to The feedback information calculates the resistance value of the resistor RX. In other embodiments, the controller 15 may also determine the resistance value of the resistor RX in other suitable ways, which is not limited in this embodiment.

Taking the corresponding resistance value corresponding to the first port preset to be connected to the second port PX2 as 5 ohms, when the controller 15 judges that the resistance value of the resistor RX is 5 ohms, it means that the second port PX2 and the first port PX1 The connection is correct. However, when the corresponding resistance value corresponding to the first port connected to the second port PX2 is 3 ohms, and the controller 15 judges that the resistance value of the resistor RX is 5 ohms, it means that the second port PX2 and the first port PX1 Connection is incorrect.

In one embodiment, after the controller 15 determines the resistance value of the resistor RX, the controller 15 further determines whether the connection between the first port 111 and the second port 113 is correct according to a resistance value lookup table. That is to say, the resistance value lookup table contains the corresponding resistance value of each first port 111. When the controller 15 judges that the resistance value of the resistor RX is 5 ohms, the controller 15 compares the second port PX2 to the second port PX2 according to the resistance value lookup table. It is determined whether the corresponding resistance value corresponding to the connected first port is 5 ohms, so as to determine whether the connection between the first port PX1 and the second port PX2 is correct.

In another embodiment, when the controller 15 judges that the connection between the first port and the second port is incorrect, the controller 15 further judges the position of the second port that the first port is preset to connect to according to the resistance value look-up table. In other words, when the resistance value corresponding to the first port to which the second port PX2 is preset connected is 3 ohms, and the controller 15 measures the resistance value of the resistance RX of the first port PX1 as 5 ohms, the controller 15 judges If the connection between the first port and the second port is incorrect, the controller 15 judges that the first port whose resistance RX is 5 ohms is PX4 according to the resistance value look-up table. At this time, the controller 15 may provide a message that the second port PX2 should be connected to the first port PX4 to inform the user, thereby reducing the number of times of trial and error for the user.

In the foregoing embodiments, the electronic component 112 is illustrated by taking a resistor as an example. In other embodiments, the electronic component 112 is also, for example, a light emitting diode or other suitable electronic components, which is not limited in this embodiment. In addition, this embodiment does not limit the number of electronic components 112 electrically connected to the first port 111. For example, when the first port 111 is electrically connected to two parallel resistors, the corresponding resistance value of the first port 111 is two The equivalent resistance value of resistors connected in parallel. When the first port 111 is electrically connected to two series-connected LEDs, the corresponding resistance value of the first port 111 is the equivalent resistance value of the two series-connected LEDs.

In the foregoing embodiments, the connection between the first port 111 of the circuit board 11 to be tested and the second port 131 of the test board 13 is realized through the connecting wire 17 . The connecting wire 17 is, for example, a flat cable, and one connecting wire 17 has multiple wires, and the two ends of each wire are respectively connected between a first connecting end of the first port 111 and a second connecting end of the test board 13 , but this embodiment does not limit it. In other embodiments, the first port 111 of the circuit board 11 to be tested and the second port 131 of the test board 13 may also be directly connected by a plurality of wires or connected in other suitable ways.

Based on the above, the embodiment of the present invention provides a detection device capable of testing the correctness of the connection. Through the electronic components disposed on each first port, each first port has a different corresponding resistance value. In this way, when the first port and the second port are connected, the control board can output a test signal to the first port through the second port in advance to measure the corresponding resistance value of the first port, so as to compare the corresponding resistance value of the first port. Whether the resistance value is the same as the corresponding resistance value corresponding to the first port that is preset to be connected to the second port is used to determine whether the connection between the first port and the second port is correct. In this way, the detection device of this embodiment can reduce the chance of wrong connections between the first port and the second port when starting to detect the circuit board to be tested, and reduce the controller from inputting wrong detection signals to the circuit board to be tested, resulting in Potential for circuit board damage.

Although the present invention is disclosed above with the aforementioned embodiments, it is not intended to limit the present invention. Without departing from the spirit and scope of the utility model, all changes and modifications made belong to the patent protection scope of the utility model.

Claims (10)

1. A detection device capable of testing connection correctness, characterized in that it comprises: A circuit board to be tested has a plurality of first ports, each of the first ports is electrically connected to at least one electronic component, and each of the first ports is electrically connected to the electronic component so that each of the first ports has a corresponding resistance; A test board has a plurality of second ports, one of the second ports is connected to one of the first ports through a connecting line; and A controller, electrically connected to the test board, is used to control the second port connected to one of the first ports to output a test signal, and the test signal is used to detect one of the first ports The corresponding resistance value is used to determine whether the connection between the first port and the second port is correct. 2. The detection device capable of testing connection correctness as claimed in claim 1, wherein each of the first ports has a plurality of first connection terminals, at least one of which is electrically connected to the electronic components. 3. The detection device capable of testing connection correctness as claimed in claim 2, wherein each of the second ports has a plurality of second connection ends, when one of the second ports passes through the connection When the wire is connected to one of the first ports, each second connection end of the second port is electrically connected to one of the first connection ends. 4. The detection device capable of testing connection correctness as claimed in claim 3, wherein the controller controls the second port connected to one of the first ports to use the second connection One of the terminals outputs the test signal, and the test signal is output to the first connection terminal with the electronic component through the connection line, so as to detect the resistance value of the electronic component, so as to judge the first port and the second terminal. Whether the port connection is correct. 5. The detection device capable of testing connection correctness as claimed in claim 3, wherein the connecting wire comprises a plurality of wires, each of which is connected to one of the first connecting ends and the second connecting ends. between one of the two connection ends. 6. The detection device capable of testing connection correctness according to claim 1, wherein the electronic component is a resistor, and the equivalent resistance value of the resistor electrically connected to each of the first ports is the first port The corresponding resistance value. 7. The detection device capable of testing connection correctness as claimed in claim 6, wherein the controller controls the test signal output by the second port connected to one of the first ports to be a For testing current, the controller judges the corresponding resistance value of the first port connected to the second port according to the voltage difference between the two ends of the electronic component. 8. The detection device capable of testing connection correctness according to claim 1, wherein the electronic component is a light emitting diode, and the equivalent resistance value of each light emitting diode electrically connected to the first port is the first The corresponding resistance value of a port. 9. The detection device capable of testing connection correctness as claimed in claim 1, wherein the controller further judges whether the connection between the first port and the second port is correct according to a resistance value look-up table, the The resistance value lookup table includes the corresponding resistance value of each of the first ports. 10. The detection device capable of testing connection correctness as claimed in claim 9, wherein when the controller judges that the connection between the first port and the second port is incorrect, the controller further relies on the resistance The value lookup table determines the position of the second port that the first port is preset to connect to.