TWI707147B - Path selection system - Google Patents

Abstract

The subject of the present invention is to avoid incorrect connection of electrical circuit devices and specific electronic parts or components. The path selection system related to this embodiment is provided with a first rectifying part that flows current in a first direction, and a second rectifying part that flows current in a second direction opposite to the first direction, and both ends of the first rectifying part The two ends of the second rectification section are connected in parallel so that the respective rectification directions are opposite, and the selection unit that should be connected to the object of the predetermined electrical circuit device is selected, and the flow through the first rectification section or the second rectification section is generated. The current generating part and the control part controlling the current generating part; the first rectifying part and the second rectifying part each have an on-off control part of at least one relay, and switch the electrical circuit device and the aforementioned electrical circuit device according to the on-off state of the relay. Connection of objects.

Description

Path selection system

The invention relates to a routing system for selecting specific electronic parts or components connected to an electrical circuit device.

Various types of electrical characteristics inspection systems for measuring electrical characteristics of wafer-type electronic components (hereinafter referred to as workpieces) such as resistors, capacitors, coils, etc. are known (for example, refer to Patent Document 1 etc.). In the electrical characteristic inspection system of such a workpiece, the probe abuts on the electrical characteristic inspection system of the workpiece, and the probe is connected to the measuring device. At this time, in order to improve the inspection efficiency, the probes corresponding to the electrodes of the plural workpieces are contacted in advance. Therefore, from these probes, only the one abutting on the workpiece to be inspected is selected, and the path selection system connected to the measuring instrument is installed.

FIG. 6 is a diagram showing the structure of the previous path selection system 100. As shown in FIG. 6, the conventional route selection system 100 includes a selection unit 101, a current generation unit 102, a display unit 105, and a control unit 106. Fig. 6 further illustrates the measuring device 103 provided outside the route selection system 100, the inspection target workpiece W1, and the workpiece W2. The selection unit 101 is a unit for selecting specific workpieces W1 and W2 connected to the measuring device 103, and includes eight electromagnetic relays RL11, RL12, RL13, RL14, RL21, RL22, RL23, and RL24.

The electromagnetic relay R11 includes an opening and closing control unit having an electromagnetic coil Rc11, and a path opening and closing unit having a mechanical contact Rs11. The electromagnetic coil Rc11 generates electromagnetic force corresponding to the applied current. The mechanical contact Rs11 is turned into an open state (OFF) by a mechanical force when no current is applied to the electromagnetic coil Rc11. On the other hand, if the mechanical contact Rs11 applies a current to the electromagnetic coil Rc11, it becomes a closed state (ON) by the electromagnetic force generated by the energization. Then, if the application of current is stopped, the open state (OFF) is restored by mechanical force again. The same applies to the other electromagnetic relays RL12, RL13, RL14, RL21, RL22, RL23, and RL24. Here, for the convenience of description, the order of description of the subsequent electromagnetic relays is defined as RL11, RL12, RL13, RL14, RL21, RL22, RL23, RL24. Then, for example, when RL11, RL12, RL13, and RL14 are collectively expressed, they are described as "RL11 to RL14". Also, when all electromagnetic relays except RL11 are collectively expressed, they are described as "RL12～RL24". The same applies to the electromagnetic coils Rc11, Rc12, Rc13, Rc14, Rc21, Rc22, Rc23, Rc24 and mechanical contacts Rs11, Rs12, Rs13, Rs14, Rs21, Rs22, Rs23, and Rs24.

The current generating unit 102 has a function of applying current to the electromagnetic coils Rc11 to Rc24, the light emitting diode D1, and the light emitting diode D2, and includes 10 drivers DRV1 to DRV10. The drivers DRV1～DRV10 are connected to a constant voltage V+. In addition, the drivers DRV1 to DRV10 are individually controlled by control inputs DC1 to DC10, respectively. Thereby, the outputs DS1 to DS10 of the drivers DRV1 to DRV10 are set to a constant voltage V+, or are set to a high resistance state (HZ), that is, a state where no one is electrically connected. The relationship between the logic of the control inputs DC1 to DC10 and the settings of the outputs DS1 to DS10 will be described later.

In addition, the current generation unit 102 includes a control input setting unit 102a. The control input setting unit 102a individually sets the control inputs DC1 to DC10. Here, the driver DRV1 is connected to one end of the electromagnetic coil Rc11, and if the output DS1 is set to a constant voltage V+, the output DS1 of the driver DRV1, that is, a constant voltage V+, is applied to one end of the electromagnetic coil Rc11. Similarly, the driver DRV2 is connected to one end of the solenoid Rc13, the driver DRV3 is connected to one end of the solenoid Rc12, the driver DRV4 is connected to one end of the solenoid Rc14, the driver DRV5 is connected to one end of the solenoid Rc21, and the driver DRV6 is connected to the solenoid Rc23. The driver DRV7 is connected to one end of the electromagnetic coil Rc22, and the driver DRV8 is connected to one end of the electromagnetic coil Rc24. Thereby, as with the output DS1, if the outputs DS2 to DS8 are each set to a constant voltage V+, the output DS2, which is a constant voltage V+, is applied to one end of the solenoid Rc13, and the output DS3, which is a constant voltage V+, is applied to one end of the solenoid Rc12. , The output DS4, the constant voltage V+ is applied to one end of the electromagnetic coil Rc14, the output DS5, the constant voltage V+ is applied to one end of the electromagnetic coil Rc21, the output DS6, the constant voltage V+ is applied to one end of the electromagnetic coil Rc23, and the output DS7 is the constant The voltage V+ is applied to one end of the electromagnetic coil Rc22, and the output DS8, which is a constant voltage V+, is applied to one end of the electromagnetic coil Rc24. The driver DRV9 and the driver DRV10 will be described later.

In addition, a constant voltage Vd is applied to the other ends of the electromagnetic coils Rc11 to Rc24. Here, the relationship between the constant voltage V+ and the constant voltage Vd connected to the drivers DRV1 to DRV8 in the above-mentioned current generating unit 102 is V+>Vd. It can be seen that in response to the application of the outputs DS1 to DS8, currents corresponding to the voltage difference flow through the corresponding pairs of electromagnetic coils Rc11 to Rc24. On the other hand, if the output DS1 to the output DS8 are each set to a high resistance state (HZ), current will not flow through the corresponding electromagnetic coils Rc11 to Rc24.

The measuring device 103 as an electrical circuit device is equipped with a constant current source 103a and a DC voltmeter 103b inside. In addition, on the surface of the measuring device 103, a current output terminal IH for outputting the current generated by the constant current source 103a, a current input terminal IL for inputting a current to the constant current source 103a, and a voltage input on the high potential side of the DC voltmeter 103b are provided. The terminal VH and the voltage input terminal VL on the low potential side.

The two workpieces W1 and W2 to be the object of the electrical characteristic inspection are formed with electrodes W1a, W1b, and electrodes W2a, W2b, for example, at respective ends. The probes 104a1 and 104c1 are in contact with the electrode W1a, and the probes 104b1 and 104d1 are in contact with the electrode W1b. Similarly, the probes 104a2 and 104c2 are in contact with the electrode W1a, and the probes 104b2 and 104d2 are in contact with the electrode W2b. Hereinafter, when collectively expressing all the probes contacting the electrodes W1a and W1b of the workpiece W1, it will be described as "104a1～104d1", and collectively expressing all the probes contacting the electrodes W2a and W2b of the workpiece W2 will be described as "104a2～ 104d2".

As will be described later, by the action of the selection unit 101, all the probes abutting on the electrodes W1a and W1b of the workpiece W1 are simultaneously connected to the current output terminal IH, the current input terminal IL, and the high potential side of the measuring instrument 103. Voltage input terminal VH and voltage input terminal VL on the low potential side. Hereinafter, for convenience, this connection is described as "the connection between the workpiece W1 and the measuring device 103". Similarly, by the action of the selection unit 101, all the probes abutting on the electrodes W2a and W2b of the workpiece W2 are simultaneously connected to the current output terminal IH, the current input terminal IL, and the voltage input terminal on the high potential side of the measuring device 103 VH, the voltage input terminal VL on the low potential side. Hereinafter, for convenience, this connection is described as "the connection between the workpiece W2 and the measuring device 103".

The probe 104a1 is connected to one end of the mechanical contact Rs11, and the probe 104c1 is connected to one end of the mechanical contact Rs13. In addition, the probe 104b1 is connected to one end of the mechanical contact Rs12, and the probe 104d1 is connected to one end of the mechanical contact Rs14. Similarly, the probe 104a2 is connected to one end of the mechanical contact Rs21, and the probe 104c2 is connected to one end of the mechanical contact Rs23. In addition, the probe 104b2 is connected to one end of the mechanical contact Rs22, and the probe 104d2 is connected to one end of the mechanical contact Rs24. In this way, by individually connecting one end of the eight mechanical contacts Rs11 to Rs24 with the probes 104a1 to 104d1 and the probes 104a2 to 104d2, one end of the eight mechanical contacts Rs11 to Rs24 is connected to one end of the two workpieces and the other The first connection line at one end.

In addition, in the measuring device 103, the current output terminal IH is connected to the other ends of the mechanical contacts Rs13 and Rs23. In addition, the current input terminal IL is connected to the other end of the mechanical contacts Rs14 and Rs24. On the other hand, the voltage input terminal VH on the high potential side is connected to the other ends of the mechanical contacts Rs11 and Rs21. In addition, the voltage input terminal VL on the low potential side is connected to the other ends of the mechanical contacts Rs12 and Rs22. In this way, one input or output of the measuring device 103 is simultaneously connected to the other end of the plurality of mechanical contacts among the eight mechanical contacts Rs11 to Rs24, forming a second connection line.

The display unit 105 is installed in the path selection system 100 and has two light emitting diodes (LED) D1 and D2. The anode of the light emitting diode D1 is connected to the driver DRV10 of the current generating unit 102. Accordingly, if the output DS10 of the driver DRV10 is set to the constant voltage V+, the constant voltage V+ is applied to the anode of the light emitting diode D1. Similarly, the anode of the light-emitting diode D2 is connected to the driver DRV9 of the current generating unit 102, and if the output DS9 of the driver DRV9 is set to a constant voltage V+, a constant voltage V+ is applied to the anode of the light-emitting diode D2

The driver DRV10 is individually controlled by the control signal DC10 to change the output DS10. Similarly, the driver DRV9 is individually controlled by the control signal DC9 to change the output DS9. The relationship between the control signals DC10 and DC9 and the output DS10 and DS9 will be described later. In addition, to the cathodes of the light emitting diodes D1 and D2, the same constant voltage Vd as that applied to the other ends of the coils Rc11 to Rc24 described above is applied.

The control unit 106 is installed in the path selection system 100, and controls the input setting unit 102a by software control.

The control of the path selection system 100 of the inspection apparatus of the prior art as described above will be described using FIGS. 7, 8A, 8B, and 8C. FIG. 7 is a diagram showing the current generation unit 102, the electromagnetic coils Rc11 to Rc24, and the display unit 105 extracted from the path selection system 100 of FIG. 6. FIG. 8A is a diagram showing the relationship between the control inputs DC1 to DC10 of the drivers DRV1 to DRV10 of FIG. 6 and the outputs DS1 to DS10 of the drivers DRV1 to DRV10 as a truth value table. FIG. 8B is a diagram showing the relationship between the control inputs DC1 to DC10, the mechanical contacts Rs11 to Rs24 of the electromagnetic relays RL11 to RL24, and the states of light emitting diodes (LED) D2 and D1 as a truth table. Fig. 8C is a diagram showing the relationship between the control inputs DC1 to DC10 of the drivers DRV1 to DRV10, the mechanical contacts Rs11 to Rs24 of the electromagnetic relays RL11 to RL24, and the connection between the workpieces W1 and W2 and the measuring device 103 as a truth table .

Here, referring to Figs. 6 and 7 while referring to Figs. 8A, 8B, and 8C, for control commands [0] to [10] and control inputs DC1 to DC10, driver outputs DS1 to DS10, and mechanical contacts Rs11 of the electromagnetic relay The relationship between ~Rs24 will be explained. As shown in Fig. 8A, the columns at the left end of the truth table are control commands [0] to [10]. The control commands [0] to [10] are those sent to the control input setting unit 102a when the control unit 106 controls the control input setting unit 102a of the current generating unit 102 by software. The control commands [0]～[10] are identified by the numbers assigned individually, and the numbers 0～10 are assigned to the control commands shown in each column. Next, the second to eleventh columns from the left indicate the settings of the control inputs DC1 to DC10. Control inputs DC1～DC10 are logic inputs, and take two values of H (High) level or L (Low) level. H (High) is described as "H" and L (Low) is described as "L", and the same applies in the following description. Here, if i is set to 1 to 10, by the function of the driver DRVi, when the control input DCi is set to "H", the output DSi is set to constant voltage V+, and when the control input DCi is set to "L", the output DSi is set to a high resistance state (a state where it is not electrically connected to any place).

First, the control command [0] will be described. The control command [0] means that all control inputs DC1～DC10 are "L". This is the initial state without control. The states of the driver outputs DS1 to DS10 at this time are disclosed in the 12th to 21st columns. The control input DCi and the output DSi of the driver DRVi have the above-mentioned relationship, so all the outputs DS1 to DS10 are set to the high resistance state (HZ). However, as shown in Figure 7, the outputs DS1 to DS8 are connected to one end of the electromagnetic coils Rc11 to Rc24. Then, the output DS9 is connected to the anode of the light-emitting diode D2, and the DS10 is connected to the anode of the light-emitting diode D1. Therefore, in the control command [0], one end of the electromagnetic coils Rc11 to Rc24 and the anodes of the light emitting diodes D2 and D1 are in a high resistance state. Therefore, no current is applied to the electromagnetic coils Rc11 to Rc24, and the mechanical contacts Rs11 to Rs24 corresponding to the electromagnetic coils are in an open state (OFF). Furthermore, the light-emitting diodes D2 and D1 are turned off. It is the control command [0] shown in FIG. 8B that represents this state in the truth table. Furthermore, in FIG. 8B, the light-off state is represented by "off", and the light-on state is represented by "on", so that the light-emitting diodes D2 and D1 can be intuitively understood by looking at the watch.

Next, referring to FIG. 8A again, the control command [1] will be described. The control command [1] is that the control input DC10 is "H", and the other control inputs DC2～DC10 are "L". In this way, when setting the state of the driver output DS1 to DS10 at the time of control input, the output DS1 is set to the constant voltage V+, and the other outputs DS2 to DS10 are set to the high resistance state (HZ). At this time, as shown in FIG. 7, the output DS1 is set to V+, so a constant voltage V+ is applied to one end of the electromagnetic coil Rc11, and a constant voltage Vd is applied to the other end. Then, as described above, V+>Vd, so a current is applied to the electromagnetic coil Rc11. Then, the corresponding mechanical contact Rs11 becomes a closed state (ON). In addition, the other mechanical contacts Rs12 to Rs24 are in the open state (OFF), and the light emitting diodes D2 and D1 are both in the off state. It is disclosed in the control command [1] of the truth table in Fig. 8B. Hereinafter, the control commands [2] to [10] in Fig. 8A are also the same as the control command [1]. Only one of the 10 control inputs is set to "H", and the remaining control inputs are set to "L". Then, in Figure 8B, the same as the control command [1], in the control commands [2] ~ [8], only the mechanical contact corresponding to the control input set to "H" becomes the closed state (ON), and the rest The mechanical contact is open (OFF). In addition, in the control commands [9] and [10], all the mechanical contacts Rs11 to Rs24 are in the open state (OFF), corresponding to the control commands [9] and [10], the light-emitting diodes D2 and D1 are respectively lit.

Here, in order to perform the connection between the workpiece W1 and the measuring device 103 shown in FIG. 6 and the connection between the workpiece W2 and the measuring device 103, it is shown in FIG. 8C that which control command is executed simultaneously from FIG. 8A. More specifically, for the individual control commands [0] to [10], the relationship between the "H" and "L" of the control inputs DC1 to DC10 and the "ON" and "OFF" of the mechanical contacts Rs11 to Rs24 of the relay are revealed, and The two columns at the right end respectively correspond to the lines corresponding to the control numbers to be executed for the connection between the workpiece W1 and the measuring device 103 and the connection between the workpiece W2 and the measuring device 103, and indicate the characters "execute". First, in the second column from the right end, as control commands executed when the work W1 is connected to the measuring device 103, [1] to [4] and [10] are listed. Among them, the mechanical contacts that correspond to the control commands [1] to [4] in the closed state (ON) are Rs11, Rs13, Rs12, and Rs14, respectively. Here, for the same control input, when "H" and "L" are simultaneously input by different control commands, "H" will be set first.

As shown in FIG. 6, when the mechanical contacts are closed, the probe 104a1 is connected to the voltage input terminal VH on the high potential side, the probe 104c1 is connected to the current output terminal IH, and the probe 104b1 is connected to the low potential side. The voltage input terminal VL and the probe 104d1 are connected to the current input terminal IL. In this way, the electrical characteristics of the workpiece W1 are inspected. As shown in Fig. 8B, corresponding to the control command [10], the light-emitting diode D1 lights up. Thereby, the operator near the inspection device can visually confirm that the inspection of the workpiece W1 is performed. Similarly, in the column at the right end of FIG. 8C, as the control commands executed when the workpiece W2 is connected to the measuring device 103, [5] to [8] and [9] are listed. Among them, the mechanical contacts that correspond to the control commands [5] to [8] to be in the closed state (ON) are Rs21, Rs23, Rs22, and Rs24, respectively.

As shown in Figure 6, when the mechanical contacts are closed, the probe 104a2 is connected to the voltage input terminal VH on the high potential side, the probe 104c2 is connected to the current output terminal IH, and the probe 104b2 is connected to the low potential side. The voltage input terminal VL and the probe 104d2 are connected to the current input terminal IL. In this way, the electrical characteristics of the workpiece W2 are inspected.

As shown in Figure 8B, corresponding to the control command [9], the light-emitting diode D2 lights up. Thereby, the operator near the inspection device can visually confirm that the inspection of the workpiece W2 is performed. [Prior Art Document] [Patent Document]

[Patent Document 1] JP 2016-125965 A

[The problem to be solved by the invention]

The path selection system 100 caused by the above-mentioned prior art has the following problems. When the workpieces W1 and W2 shown in FIG. 6 are individually connected to the measuring device 103, it can be seen from FIG. 8C that a total of 5 types of control commands need to be executed simultaneously. Here, the execution of each control command, that is, the control inputs DC1 to DC10 are set to "H" or "L", as described above, using the control input setting unit 102a for the current generating unit 102 shown in FIG. 6, the control unit 106 is controlled by software sending control commands. Furthermore, wiring used to connect the outputs DS1 to DS10 of the drivers DRV1 to DRV10 and one end of the electromagnetic coils Rc11 to Rc24 and the cathodes of the light emitting diodes D1 and D2 are connected between the drivers DRV1 to DRV10 and the control unit 102a The wiring of DC1～DC10 are all individual, and the number of wiring increases.

As the first problem point, suppose that the software malfunction is the cause. For example, in Figures 8A, B, C, there are two controls from the control unit 106 to the control input setting unit 102a simultaneously sending a control command [1] and a control command [5] The status of the order. At this time, the mechanical contacts Rs11 and Rs21 are simultaneously closed (ON). Therefore, as shown in FIG. 6, the probe 104a1 related to the workpiece W1 and the probe 104a2 related to the workpiece W2 are connected to the voltage input terminal VH on the high potential side at the same time, and accurate inspection cannot be performed. Furthermore, the operator at the inspection device cannot grasp the fact. In this way, if only part of the connection is abnormal, the correct inspection cannot be performed. Therefore, a correct judgment cannot be obtained, and even if the workpiece W1 is a defective product, it may be judged as a good product. Then, because it continues to be used in a state where such obstacles cannot be grasped, the state where the defective workpiece is judged as good will continue. Also, as another example, if the control commands [1] to [4] shown in Figs. 8A, B, and C are executed simultaneously with the control command [9], as shown in Fig. 6, the workpiece W1 is connected to the measuring device 103, And the light-emitting diode D2 lights up. At this time, the workpiece W1 actually inspected does not match the workpiece W2 under inspection visually confirmed by the operator beside the inspection device. At this time, the operator cannot grasp the fact. Therefore, the operator will determine that although the inspection device performs the inspection of the workpiece W2, it has not performed the inspection of the workpiece W1, and there is a possibility that the investigation has nothing to do with the obstacle of the software, which may waste extra time.

As a second problem, even if there is no problem with the software, from the control unit 106 to the control input setting unit 102a, the control commands [1] to [4] and [10] are correctly sent at the same time, such as the connection driver shown in FIG. 6 The wiring between the output DS1 and one end of the coil RL11 will also be disconnected for some reason. At this time, the mechanical contact Rs11 does not become a closed state (ON) but maintains an open state (OFF). Therefore, as shown in FIG. 6, the probe 104a1 related to the workpiece W1 is not connected to the voltage input terminal VH on the high-potential side, and the correct inspection cannot be performed. At this time, the operator beside the inspection device cannot grasp the fact. Then, as with the first problem described above, if only part of the connection is abnormal, the correct inspection cannot be performed. Therefore, a correct judgment cannot be obtained, and even if the workpiece W1 is a defective product, it may be judged as a good product. Then, because it continues to be used in a state where such obstacles cannot be grasped, the state where the defective workpiece is judged as good will continue.

The aforementioned problem is explained for the situation in which the two workpieces W1 and W2 selected for connection to the measuring device 103 shown in FIG. 6 are two. However, in actual inspection devices, the number of selected workpieces is larger. At this time, although the measuring device 103 shown in FIG. 6 is one, the selection unit 101, the current generating section 102, the probes 104a1 to 104d1 and 104a2 to 104d2, and the display section 105 need to be arranged for every two workpieces. Then, as in FIG. 6, it is necessary to connect one end of the mechanical contacts Rs11 to Rs14 and Rs21 to Rs24 of the plural selection unit 101 to the probes 104a1 to 104d1 and 104a2 to 104d2 individually, and to connect the mechanical contacts Rs11 to Rs14 and The other ends of Rs21 to Rs24 are connected to one input or output of the measuring device 103 at the same time. When this kind of connection is made, the number of wires will increase. Therefore, as described above, the possibility that the wiring is broken and the operator cannot grasp the situation is even higher. In addition, as the current generation unit 102 increases, the number of control inputs DC1 to DC10 also increases. Therefore, the software of the control unit 106 that sends control commands to control the control input setting unit 102a also becomes complicated. Therefore, the software will be hindered, and the possibility that the operator will not be able to grasp its status is even higher. In this way, because of the increase in the number of wiring and the complexity of the software, the situation such as the first problem or the second problem described above is more likely to occur.

In view of the above problems, when connecting multiple electrical wirings to multiple electronic components or multiple components embedded in one electronic component, it is possible to select only specific electrical wiring from the electrical wiring connected to individual electronic components or components without error. It is better to wire and connect to the electrical circuit device, and to display its connection status without error, and to reduce the number of electrical wiring for connection.

The object of the present invention is to provide a routing system that can switch the connection between an electrical circuit device and an object without making electrical wiring complicated. [Means to solve the problem]

In order to solve the aforementioned problems, according to an embodiment of the present invention, a path selection system is provided, which includes: a "selection unit" having a first rectifying unit that flows current in a first direction, and a second direction opposite to the first direction In the second rectifying part that flows current, both ends of the first rectifying part and both ends of the second rectifying part are connected in parallel so that the respective rectifying directions are opposite, and the object to be connected to the predetermined electrical circuit device is selected　　 current generating unit, which generates current flowing through the first rectifying unit or the second rectifying unit; and the control unit, controlling the current generating unit; 　　 the first rectifying unit and the second rectifying unit each have at least one relay The opening and closing control unit; 　 　 in response to the opening and closing state of the relay, switch the connection between the electrical circuit device and the object.

The current generating unit may have a state in which current flows in the first direction, a state in which current flows in a second direction opposite to the first direction, or a state in which no current flows in any direction.

As the selection unit selected as the candidate for the object, the first object and the second object may be provided. "When the first rectifying unit flows current in the first direction, the electrical circuit device may be connected to the first object. "When the second rectifying unit flows current in the second direction, the electrical circuit device may be connected to the second object.

The relay may include a plurality of first relays provided in the first rectifying part, and may also have a plurality of second relays provided in the second rectifying part.　　The first plurality of relays mentioned above can be turned on synchronously or cut off the respective input and output paths.　　 The aforementioned plural second relays can be turned on synchronously or cut off the respective input and output paths.

The current generating unit may set the current supply nodes to the first rectifying unit and the second rectifying unit to a high resistance state when the current does not flow through the first rectifying unit and the second rectifying unit.

It is also possible to have a plurality of the aforementioned selection units that share the aforementioned electrical circuit devices.　　 Corresponding to each selection unit of the aforementioned plural selection units, the aforementioned at least one relay and the aforementioned object can also be provided.

The control unit may control the current generation unit to flow the current in the first direction or the second direction in a specific selection unit in the plurality of the selection units, and the current generation unit may perform control in addition to the plurality of selection units. It is also possible to control the non-current flow of the aforementioned relays in the aforementioned selection unit except for the specific selection unit.

The first rectifying part and the second rectifying part may each have a rectifying element in addition to the relay.

The foregoing relay may be an electromagnetic relay.　　 It has the aforementioned opening and closing control unit with an electromagnetic coil, and it may also have a path opening and closing unit with mechanical contacts. "The first rectification part and the second rectification part may each have a circuit in which a plurality of the electromagnetic coils and one or more rectification elements are connected in series in a predetermined order.

The path opening and closing part of the relay and the corresponding opening and closing control part may be electrically insulated.　　 The aforementioned switching control unit may have a rectifying function.

The above-mentioned relay may also have: the opening and closing control part having a first light emitting diode; and the path opening and closing part having a field effect transistor that switches operations according to the light emitting state of the first light emitting diode; The first rectifying part and the second rectifying part may each have a circuit in which a plurality of the first light emitting diodes are connected in series in a predetermined order.

It may also be equipped with: 　　 a second light-emitting diode connected to one end of the first rectifying part, and lighting when the current flows in the second direction; and a third light-emitting diode connected to the second rectifying part One end is lit when the current flows in the second direction.

One end of the first rectifying part may be connected to the first node, and the other end may be connected to a second node different from the first node. One end of the second rectifying part may be connected to the first node and the other end may be connected to the second node. Nodes can also be used. The relay provided in the first rectifying section may be connected to a first wiring path connecting the electrical circuit device and the first object, and the relay provided in the second rectifying section may be connected to the electrical The second wiring path of the sexual circuit device and the second object different from the first object may be used. "The first rectifier section may be configured to set the first wiring path in a conductive state when the current in the first direction flows between the first node and the second node. "The second rectifier section may be configured to set the second wiring path in a conductive state when the current in the second direction flows between the first node and the second node.

The aforementioned object may be a chip-type electronic component having at least one of a resistor, a capacitor, and a coil.

The aforementioned electrical circuit device may be a measuring instrument for inspecting the electrical characteristics of the aforementioned object. [Effects of the invention]

According to the present invention, it is possible to switch the connection between the electrical circuit device and the object without complicating the electrical wiring, and the path selection system can be performed without error.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. This embodiment does not limit the inventors.

(One embodiment) 　　 Fig. 1 is a diagram showing the structure of a route selection system 10 related to an embodiment. As shown in Fig. 1, a path selection system 10 related to an embodiment is a system for selecting specific workpieces W1 and W2 connected to a measuring device 103, and is composed of a selection unit 1, a current generation unit 2, a display unit 5, and a control unit 6. . In FIG. 1, the same reference numerals are attached to components having the same function and structure as those in FIG. 6, and the description is omitted except for necessary conditions.

The selection unit 1 is configured to include a first rectification section that flows current in a first direction and a second rectification section that flows current in a second direction opposite to the first direction. That is, the first rectifying unit has diodes D11 and D12 and electromagnetic relays RL11 to RL14 connected in a predetermined order between node n1 and node n4. More specifically, the diode D11 and the electromagnetic relays RL11 and RL12 are connected in series between the node n1 and the node n2, and the diode D12 and the electromagnetic relays RL13 and RL14 are connected in series between the node n3 and the node n4.

On the other hand, the second rectifying unit has diodes D21 and D22 and electromagnetic relays RL21 to RL24 connected in a predetermined order between node n1 and node n4. More specifically, the diode D21 and the electromagnetic relays RL21 and RL22 are connected in series between the node n1 and the node n2, and the diode D22 and the electromagnetic relays RL23 and RL24 are connected in series between the node n3 and the node n4.

The first direction is, for example, a direction from node n1 to node n4, and the second direction is, for example, a direction from node n4 to node n1. The selection unit 1 selects the workpiece W1 when the first rectifying section flows current in the first direction, and selects the workpiece W2 when the second rectifying section flows current in the second direction. That is, the measuring device 103 is connected to the workpiece W1 when the first rectifying section flows current in the first direction, and when the second rectifying section flows current in the second direction, the measuring device 103 is connected to the workpiece W2.

In addition, between the measuring device 103 and the workpiece W1, first wiring paths for connecting the probes 104a1 to 104d1 are respectively connected. On the other hand, between the measuring device 103 and the workpiece W2, second wiring paths for connecting the probes 104a2 to 104d2 are respectively connected.

Here, the electromagnetic relays RL11 to RL24 have the same structure as that of the selection unit 101 in FIG. 6. That is, the electromagnetic relays RL11 to RL24 each include a path opening and closing unit having mechanical contacts Rs11 to Rs24 and an opening and closing control unit for electromagnetic coils Rc11 to Rc24. The mechanical contacts Rs11 to Rs24 conduct or interrupt the input and output paths of the electromagnetic relays RL11 to RL24. For example, the mechanical contact Rs11 conducts or interrupts the wiring path connecting the voltage input terminal VH on the high potential side of the measuring instrument 103 and the probe 104a1. The mechanical contacts Rs11 to Rs24 control the conduction or interruption of the electromagnetic relays RL11 to RL24.

The electromagnetic coils Rc11 to Rc24 control the conduction or interruption of the mechanical contacts Rs11 to Rs24. It can be seen from these contents that the selection unit 1 selects and conducts the first wiring path connecting the measuring device 103 and the workpiece W1 when the current in the first direction flows between the node n1 and the node n4, and flows between the node n1 and the node n4 When the current flows in the second direction, the second wiring path connecting the measuring device 103 and the workpiece W2 is selected and conducted. In addition, when no current flows between the node n1 and the node n4, the first wiring path and the second wiring path are in a blocked state.

The electromagnetic coils Rc11 to Rc24 are designed so that when the first rectifying section circulates current in the first direction, the second rectifying section does not circulate current in the second direction, and when the second rectifying section circulates current in the second direction, The first rectifying part controls the conduction or interruption of the corresponding mechanical contacts Rs11 to Rs24 in a manner that does not flow current in the first direction.

The current generation unit 2 generates a current that flows through the first rectification unit or the second rectification unit. That is, the current generation unit 2 has a function of applying current to the electromagnetic coils Rc11 to Rc24, and includes a control input setting unit 2a and a driver DRV0.

The control input setting unit 2a individually sets the control inputs DC01 and DC02 of the driver DRV0. Connect constant voltage V+ and V- to the driver DRV0. In addition, the driver DRV0 is controlled by the control inputs DC01 and DC02. The output DS0 is set to a constant voltage V+, or set to a constant voltage V-, or set to a high resistance state (HZ), that is, it is not electrically connected. The state of any place. The relationship between the logic of the control inputs DC01 and DC02 and the setting of the output DS0 will be described later.

In addition, the measuring device 103 as an example of the electrical circuit device, the workpieces W1 and W2 as an example of the object, the probes 104a1 to 104d1, and the probes 104a2 to 104d2 have the same structure as in FIG. 6. Then, the display portion 5 has the same structure as the display portion 105 of FIG. 6, and as described later, the wiring of the light-emitting diodes D1 and D2 inside it is different from that of FIG. 6. That is, the selection unit of FIG. 1 and the selection unit 101 of FIG. 6 are different in the connection method of the electromagnetic coils Rc11 to Rc24 and the light emitting diodes D1 and D2.

Hereinafter, the method of connecting the electromagnetic coils Rc11 to Rc24 and the light emitting diodes D1 and D2 will be described in more detail. The driver DRV0 is connected to the anode of the diode D11 and the cathode of the diode D21 arranged in the selection unit 1. Thereby, when the output DS0 is set to the constant voltage V+, the constant voltage V+ is applied to the anode of the diode D11 and the cathode of the diode D21. Similarly, when the output DS0 is set to the constant voltage V-, the constant voltage V- is applied to the anode of the diode D11 and the cathode of the diode D21. On the other hand, when the output DS0 is set to the high resistance state (HZ), the driver DRV0 and the anode of the diode D11 and the cathode of the diode D21 become the high resistance state (HZ).

The cathode of the diode D11 is connected to one end of the electromagnetic coil Rc11, and the other end of the electromagnetic coil Rc11 is connected to one end of the electromagnetic coil Rc12. On the other hand, the anode of the diode D21 is connected to one end of the electromagnetic coil Rc21, and the other end of the electromagnetic coil Rc21 is connected to one end of the electromagnetic coil Rc22. Then, the other end of the electromagnetic coil Rc12 and the other end of the electromagnetic coil Rc22 are both connected to the anode of the diode D12 and the cathode of the diode D22 arranged in the selection unit 1.

The cathode of the diode D12 is connected to one end of the electromagnetic coil Rc13, and the other end of the electromagnetic coil Rc13 is connected to one end of the electromagnetic coil Rc14. On the other hand, the anode of the diode D22 is connected to one end of the electromagnetic coil Rc23, and the other end of the electromagnetic coil Rc23 is connected to one end of the electromagnetic coil Rc24. Then, the other end of the electromagnetic coil Rc14 and the other end of the electromagnetic coil Rc24 are both connected to the anode of the light-emitting diode D1 and the cathode of the light-emitting diode D2 arranged in the display unit 5. Then, the cathode of the light-emitting diode D1 and the anode of the light-emitting diode D2 are both connected to the constant voltage Vd. Here, the relationship between the constant voltages V+ and V- connected to the driver DRV0 and the constant voltage Vd in the above-mentioned current generating unit 2 is V+>Vd>V-.

FIG. 2 is a diagram showing the current generating unit 2, the diodes D11, D12, D21, D22, the electromagnetic coils Rc11 to Rc24, and the display unit 5 extracted from the path selection system 10 of FIG. As shown in FIG. 2, in the driver DRV0, a diode D11, electromagnetic coils Rc11 and Rc12, a diode D12, electromagnetic coils Rc13 and Rc14, and a light emitting diode D1 are sequentially connected in series. That is, as described above, the diode D11, the electromagnetic coils Rc11 and Rc12 are connected in series between the node n1 and the node n2, and the diode D12, the electromagnetic coils Rc13 and Rc14 are connected in series between the node n3 and the node n4, The node n5 is connected to the anode of the light emitting diode D1. Then, the diodes D11 and D12 and the light-emitting diode D1 have a rectifying function for flowing forward current according to the connection sequence. This forward current is disclosed as the first direction current I+ in FIG. 2. Hereinafter, the circuit that connects the diode and the electromagnetic coil in series and has a rectifying function for flowing the first direction current I+ is called the first drive group DG11, DG12. The circuit connecting the first drive group DG11 and DG12 in series is the first rectifier 7.

As shown in FIG. 2, the first drive group DG11 is a circuit in which the diode D11, the electromagnetic coils Rc11, and Rc12 are connected in series. Similarly, the first drive group DG12 is a circuit in which the diode D12, the electromagnetic coils Rc13, and Rc14 are connected in series.

On the other hand, in the driver DRV0, the diode D21, the electromagnetic coils Rc21, Rc22, the diode D22, the electromagnetic coils Rc23, Rc24, and the light emitting diode D2 are sequentially connected in series. That is, as described above, the diode D21, the electromagnetic coils Rc21 and Rc22 are connected in series between the node n1 and the node n2, and the diode D22, the electromagnetic coils Rc23 and Rc24 are connected in series between the node n3 and the node n4, The node n5 is connected to the anode of the light emitting diode D2. Then, the diodes D21, D22, and the light-emitting diode D2 have a rectifying function in which forward current flows in the reverse order of the connection. This forward current is disclosed as the second direction current I- in FIG. 2. Hereinafter, the circuit that connects the diode and the electromagnetic coil in series and has a rectifying action for flowing the current I- in the second direction is called the second drive group DG21, DG22. The circuit connecting the second drive groups DG21 and DG22 in series is the second rectifier 8.

In FIG. 2, the second drive group DG21 is a circuit in which the diode D21, the electromagnetic coil Rc21, and the electromagnetic coil Rc22 are connected in series. Similarly, the second drive group DG22 is a circuit in which the diode D22, the electromagnetic coils Rc23, and Rc24 are connected in series. Here, the first direction current I+ and the second direction current I- are in opposite directions to each other. That is, the first drive group DG11 and the second drive group DG21 are connected in parallel so that currents flow in opposite directions to each other. That is, the first drive group DG12 and the second drive group DG22 are connected in parallel so that currents flow in opposite directions to each other. Hereinafter, the circuits formed by such connections are referred to as drive group pairs DGP0 and DGP2, respectively.

That is, as shown in FIG. 2, the first driving group DG11 and the first driving group DG21 form a driving group pair DGP1. Similarly, the first driving group DG12 and the second driving group DG22 form a driving group pair DGP2. Then, the two drive group pairs DGP1 and DGP2 are connected in series. Hereinafter, the circuit formed by connecting two or more group pairs in series in this way is called a drive group pair block DGPB. For example, the drive group pair DGP1 and the drive group pair DGP2 form the drive group pair block DGPB1. This drive group constitutes a selection unit 1 for the block DGPB1. Furthermore, a constant voltage Vd is applied to both the cathode of the light emitting diode D1 and the anode of the light emitting diode D2.

In the above description, in each of the drive groups DG11, DG12, DG21, and DG22 related to this embodiment, two electromagnetic coils are provided corresponding to one diode. For example, the diode D11 is arranged corresponding to the electromagnetic coils Rc11 and Rc12, and similarly, the diode D12 is arranged corresponding to the electromagnetic coils Rc13 and Rc14. In this way, the drive group system according to the present embodiment corresponds to two electromagnetic coils and one diode is arranged, but it is not limited to this. For example, one diode may be arranged for one electromagnetic coil. Alternatively, one diode may be arranged for four electromagnetic coils.

More specifically, the method of actually manufacturing the selection unit 1 is, for example, arranging a plurality of electromagnetic relays on a substrate, and connecting the terminals of the electromagnetic coils of the electromagnetic relays by printed wiring or the like. At this time, depending on the multiple electromagnetic relays on the substrate, that is, the relative positions of the electromagnetic coils, it is appropriately decided to configure a diode for several electromagnetic coils. For example, the electromagnetic coils Rc11 and Rc12 are close to each other and are arranged as the first electromagnetic coil group. Similarly, the electromagnetic coils Rc13 and Rc14 are close to each other and are arranged as the second electromagnetic coil group, and the first electromagnetic coil group and the second electromagnetic coil group are mutually arranged. When spaced apart, as shown in Fig. 2, the diodes D11 and D12 are respectively arranged corresponding to each electromagnetic washer group. On the other hand, when all the four electromagnetic coils Rc11, Rc12, Rc13, and Rc14 are arranged close to each other, it is sufficient to arrange one diode corresponding to all the four electromagnetic coils. In addition, when all the four electromagnetic coils Rc11, Rc12, Rc13, and Rc14 are spaced apart from each other, it is sufficient to arrange one diode corresponding to the four electromagnetic coils individually. In addition, as shown in FIG. 1 again, the voltage and current input and output of the measuring device 103 and the connections of the mechanical contacts Rs11 to Rs24 and the probes 104a1 to 104d1 and the probes 104a2 to 104d2 are the same as those in FIG. 6.

As shown in FIG. 1, when the measuring device 103 and the workpiece W1 are connected, the mechanical contacts Rs11, Rs12, Rs13, and Rs14 are closed at the same time, and the mechanical contacts Rs21, Rs22, Rs23, and Rs24 are opened at the same time. When the measuring device 103 and the workpiece W2 are connected, the mechanical contacts Rs11, Rs12, Rs13, and Rs14 are simultaneously opened, and the mechanical contacts Rs21, Rs22, Rs23, and Rs24 are simultaneously closed.

It can be seen from these contents that the electromagnetic coils Rc11, Rc12, Rc13, and Rc14 belonging to the first drive group DG11, DG12 in the present embodiment shown in FIG. 2 correspond to the mechanical contacts Rs11, Rs12, Rs13, and Rs14, respectively. Similarly, the electromagnetic coils Rc21, Rc22, Rc23, and Rc24 belonging to the second drive group DG12, DG22 correspond to the mechanical contacts Rs21, Rs22, Rs23, and Rs24, respectively. Therefore, the first drive group DG11, DG12 and the second drive group DG21, DG22 are respectively connected in series with 4 electromagnetic coils corresponding to the 4 mechanical contacts opened and closed at the same time, and have a rectifying effect. Then, as described above, the drive group pair DGP1 formed by the first drive group DG11 and the second drive group DG21, and the drive group pair DGP1 formed by the first drive group DG12 and the second drive group DG22 are connected in series The drive group pair DGP2 forms the drive group pair block DGPB1. Corresponding to the mechanical contacts of each drive group forming the drive group pair block DGPB1 formed in this way, the mechanical contacts of different drive groups will not be closed at the same time.

As shown in Fig. 1, the control unit 6 is provided in the path selection system 10, and the input setting unit 2a is controlled by software. That is, the control unit 6 is connected to the control input setting unit 2a, and controls the control input setting unit 2a by individually setting any one of the control inputs DC01 and DC02.

The above is the description of the structure of the route selection system 10 related to the present embodiment, but the control of the route selection system 10 will be described below with reference to FIGS. 1 and 2 while referring to FIGS. 3A and 3B.

Fig. 3A is the relationship between the control inputs DC01 and DC02 of the driver DRV0 of Fig. 1, the output DS0 of the driver DRV0, the direction of the current flowing in each drive group, and the currents of the electromagnetic coils Rc11 to Rc24 of the electromagnetic coils RL11 to RL24, Figure revealed as a truth table. Figure 3B is the control input DC01 and DC02 of the driver DRV0, the output DS0 of the driver DRV0, the direction of the current, the mechanical contacts Rs11 to Rs24 of the electromagnetic relays RL11 to RL24, the light-emitting state of the light-emitting diodes D1 and D2 and the workpiece W1 The relationship between W2 and the connection state of the measuring device 103 is shown as a truth table.

Here, the control command will be described. The column at the left end of the truth table in Fig. 3A is a control command. The control command is sent to the control input setting section 2a when the control section 6 controls the control input setting section 2a of the current generation section 2 by software. The control commands are identified by individually assigned numbers. In Fig. 3A, the numbers [1] to [4] are assigned to the control commands shown in each column. Next, the second and third columns from the left indicate the settings of the control inputs DC01 and DC02, respectively.

The control inputs DC01 and DC02 are logic inputs and take two values of H (High) level or L (Low) level. In FIG. 3A, H (High) is described as "H" and L (Low) is described as "L", and the same is also described in the following description. Here, when the control input DC02 of the driver DRV0 is set to "L", regardless of the logic level of the control input DC01, the output DS0 is set to a high resistance state (the state is not electrically connected to any place). In contrast, if the control input DC02 is set to "H", when the logic level of the control input DC01 is "L", the output DS0 is set to a constant voltage V-, and the logic level of the control input DC01 is "H" , The output DS0 is set to a constant voltage V+.

First, the control commands [1] and [2] will be described. As shown in Fig. 3A, the control commands [1] and [2] control the input DC02 as "L". These are the initial states without control. The fourth column reveals the status of the driver output DS0 at this time. The control inputs DC01, DC02 and the output DS0 of the driver DRV0 have the above-mentioned relationship, so the output DS0 is set to a high resistance state (HZ). Here, as shown in FIG. 2, the terminal points of the first drive group DG11, DG12 are the cathode of the light-emitting diode D1, and the terminal points of the second drive group DG21, DG22 are the anode of the light-emitting diode D2, A constant voltage Vd is applied. Then, in the control numbers [1] and [2], the output DS0 is set to the high resistance state (HZ), that is, the output DS0 is in a state where it is not electrically connected to any place, so for the first drive group No current is applied to DG11, DG12, and the second drive group DG21, DG22. The direction of the current in the fifth column of FIG. 3A is described as "None", and the current in the electromagnetic coil of the electromagnetic relay in the sixth to 13th columns is also described as "None". In this state, as shown in Figure 1, the mechanical contacts Rs11 to Rs14 belonging to the first drive group DG11 and DG12 and the mechanical contacts Rs21 to Rs24 belonging to the second drive group DG21 and DG22 are in the open state (OFF) .

In addition, the light-emitting diodes D1 and D2 are turned off. It is the control commands [1] and [2] of Fig. 3B that represent this state in the truth table. Furthermore, in FIG. 3B, the light-off state is represented by "off", and the light-on state is represented by "on", so that the light-emitting diodes D1 and D2 can be intuitively understood by looking at the watch. In this way, the control commands [1] and [2] do not flow current to any of the electromagnetic coils Rc11 to Rc14 of the first drive group DG11 and DG12 and the electromagnetic coils Rc21 to Rc24 of the second drive group DG21 and DG22. Current stop mode. In the current stop mode, neither the workpiece W1 nor the workpiece W2 will be connected to the measuring device 103.

Next, the control command [3] of FIG. 3A will be described. The control command [3] is that the control input DC02 is "L", and the control input DC01 is "L". In this way, the state of the driver output DS0 when the control input is set is set to the constant voltage V-. Here, V- and Vd shown in FIG. 2 have the relationship of V-<Vd as described above. Therefore, reverse voltage is applied to the diodes D11, D12, and the light-emitting diode D1, and the diode D21 , D22, and light emitting diode D2 apply forward voltage. That is, no current is applied to the first drive group DG11, DG12, and the second direction current I- is applied to the second drive group DG21, DG22. The status is revealed in the 6th to 13th columns of FIG. 3A. Then, the mechanical contacts Rs11 to Rs14 (Figure 1) belonging to the first drive group DG11, DG12 are turned off (OFF), and the mechanical contacts Rs21 to Rs24 (Figure 1) of the second drive group DG21, DG22 (Figure 1) become Closed state (ON).

In addition, the light-emitting diode D1 is turned off, and the light-emitting diode D2 is turned on. This state is revealed in the 6th to 15th columns of FIG. 3B. In addition, based on the open state and closed state of these mechanical contacts, the connection between the measuring device 103 and the workpiece W2 is performed. The state is shown in the 16th and 17th columns of FIG. 3B. Here, the connection state of the workpiece W2 and the measuring device 103 is described as "connection" in the 17th column. In this way, the control command [3] is a reverse current application mode in which current flows to the electromagnetic coils Rc21 to Rc24 of the second drive group DG21, DG22, and does not flow current to the electromagnetic coils Rc11 to Rc14 of the first drive group DG11, DG12 .

Next, the control command [4] is that the control input DC02 is "L", and the control input DC01 is "H". In this way, the state of the driver output DS0 when the control input is set is set to the constant voltage V+. Here, in FIG. 2, because V+>Vd as described above, a forward voltage is applied to the diodes D11, D12, and the light-emitting diode D1, and the diodes D21, D22, and the light-emitting diode D2 are Apply reverse voltage. That is, the first direction current I+ is applied to the first drive group DG11, DG12, and no current is applied to the second drive group DG21, DG22. The status is revealed in the 6th to 13th columns of FIG. 3A. Then, the mechanical contacts Rs11 to Rs14 belonging to the first drive group DG11 and DG12 are in the closed state (ON), and the mechanical contacts Rs21 to Rs24 belonging to the second drive group DG21 and DG22 are in the open state (OFF). In addition, the light-emitting diode D1 is turned off, and the light-emitting diode D2 is turned on. This state is revealed in the 6th to 15th columns of FIG. 3B. In addition, based on the open state and closed state of these mechanical contacts, the connection between the measuring device 103 and the workpiece W1 is performed. The state is shown in the 16th and 17th columns of FIG. 3B. Here, the connection status of the workpiece W1 and the measuring device 103 is described as "connection" in the 16th column. In this way, the control command [4] is a forward current application mode in which current flows to the electromagnetic coils Rc11 to Rc14 of the first drive group and does not flow current to the electromagnetic coils Rc21 to Rc24 of the second drive group.

In this way, in this embodiment, the work W1 and the measuring device 103 in FIG. 1 are connected by the control command [4] as the forward voltage application mode, and the lighting of the light-emitting diode D1 indicates the work W1 and the measuring device. Connection. Similarly, by the control command [3] as the reverse voltage application mode, the workpiece W2 and the measuring device 103 are connected, and the connection of the workpiece W2 and the measuring device is indicated by lighting of the light emitting diode D2. Then, in the control commands [3] and [4], only one of the first direction current I+ and the second direction current I- shown in Figure 2 flows, so the workpiece W1 and the workpiece W2 will not be connected to the measuring device at the same time 103. In addition, the actual connection between the workpieces W1 and W2 and the measuring device 103 and the lighting of the light emitting diodes D1 and D2 do not coincide.

As shown in Figure 2, the electromagnetic coils Rc11 to Rc14 of the first drive group DG11 and DG12 are individually connected in series, and the electromagnetic coils Rc21 to Rc24 of the second drive group DG21 and DG22 are individually connected in series. The number is less than the previous path selection system 100. That is, the number of wirings related to the selection unit 1 and the current generation unit 2 of the path selection system 10 according to this embodiment is compared with the selection unit 101 and the current generation unit 102 of the prior art path selection system 100 shown in FIG. 6 The number of related wiring becomes less. Therefore, the possibility of wire breakage is further reduced, and from this viewpoint, the reliability of the selection unit 1 and the current generating unit 2 is further improved.

Also, if the wiring is disconnected, the multiple mechanical contacts Rs11 to Rs14 or Rs21 to Rs24 will not operate at the same time, so the disconnection can be easily determined. For example, when the control to apply current to the electromagnetic coils Rc11 to Rc14 constituting the first drive group DC11, DG12 is performed, if the wiring in the first drive group DC11, DG12 is disconnected somewhere, it should be applied to the first drive group DC11, DG12. 1. The currents that drive the electromagnetic coils Rc11 to Rc14 and the light emitting diode D1 in the DC11 and DG12 groups disappear at the same time. Therefore, in addition to the inspection by the measuring device 103 in FIG. 1, the light-emitting diodes to be lit in the display section 5 also remain in the light-off state. Therefore, the operator can immediately determine where the wiring in the drive group DC11, DG12 is broken.

In addition, the first drive group DG11, DG12 with rectification in the first direction and the second drive group DG21, DG22 with rectification in the second direction are respectively connected between node n1 and node n4, so it can be used Simple control for switching between 3 types of modes, and selection of specific workpieces W1 and W2 connected to the measuring device 103. Therefore, the reliability of the software is also improved.

In the above description, the workpieces to be inspected are two of the workpieces W1 and W2 shown in FIG. 1. Here, using FIG. 4, the increase of the selection unit 1 when the number of inspection objects increases. FIG. 4 is a diagram showing the increase of the selection unit 1 when the number of workpieces to be inspected increases. Here, it is disclosed that two selection units 1 in FIG. 1 are provided, and two selections are connected to the current output terminal IH, the current input terminal IL, the high potential side voltage input terminal VH, and the low potential side voltage input terminal VL of the tester 103. The state of one end of the corresponding mechanical contact in unit 1. That is, FIG. 4 shows the connection state of the mechanical contacts Rs11 to Rs24 and the measuring instrument 103 when there are four workpieces W1, W2, W3, and W4 to be inspected. In addition, although not shown, the two selection units 1 and 1 are individually provided with the current generating unit 2 and the display unit 5 shown in FIG. 1. Then, a control unit 6 having the same structure as the control unit 6 shown in FIG. 1 is provided. That is, the control unit 6 in FIG. 4 sends control commands to both of the control input setting units 2a in the two current generating units 2. In this way, the path selection system 10 has a plurality of selection units 1 and 1 sharing the measuring device 103, and corresponding to each selection unit 1, 1, at least one electromagnetic relay and objects, namely, workpieces W1, W2, W3, and W4 are provided.

As shown in FIG. 4, the workpieces to be inspected connected to the measuring device 103 are four of the workpieces W1, W2, W3, and W4. The workpieces W1 and W2, and the workpieces W3 and W4 form a group, each corresponding to the selection unit 1 and 1. Here, the situation where the workpiece W1 is connected to the measuring device 103 will be described. First, in the selection unit 1 corresponding to the workpieces W1 and W2 (on the left in FIG. 4), the control command [4] (forward current application mode) shown in FIGS. 3A and B is executed. That is, the control unit 6 sends a control command [4] to the control input setting unit 2a related to the selection unit 1 corresponding to the workpieces W1 and W2. At the same time, in the selection unit 1 corresponding to the workpieces W3 and W4 (on the right side of FIG. 4), the control commands [1] or [2] (current stop mode) shown in FIGS. 3A and B are executed. That is, the control unit 6 transmits the control command [1] or [2] to the control input setting unit 2a related to the selection unit 1 corresponding to the workpieces W3 and W4. At this time, in the selection unit 1 corresponding to the workpieces W1 and W2, as described above, the workpiece W1 is connected to the measuring device 103, and the workpiece W2 is not connected. Then, in the corresponding display section 5 (FIG. 1), the light-emitting diode D1 is turned on, and D2 is turned off. Moreover, in the selection unit 1 corresponding to the workpieces W3 and W4, as described above, none of the workpieces W3 and W4 is connected to the measuring device 103. Then, in the corresponding display portion 5, any one of the light-emitting diodes D1 and D2 is turned off.

As another example, for the connection of the workpiece W4 to the measuring device 103 in FIG. 4, as long as the control command [1] or [2] (current stop mode) is executed in the selection unit 1 corresponding to the workpieces W1 and W2, and In the selection unit 1 corresponding to the workpieces W3 and W4, execute the control command [3] (reverse current application mode). At this time, the control unit 6 sends control commands [1] or [2] to the control input setting unit 2a related to the selection unit 1 corresponding to the workpieces W1 and W2, and controls related to the selection unit 1 corresponding to the workpieces W3 and W4. Input the setting part 2a, and send the control command [3]. In this way, by the control command [1] or [2], none of the workpieces W1 and W2 are connected to the measuring device 103, and any one of the light-emitting diodes D1 and D2 in the corresponding display part 5 (Figure 1) All lights are off. And by the control command [3], the workpiece W4 is connected to the measuring device 103, and the workpiece W3 is not connected. Then, in the corresponding display section 5, the light-emitting diode D1 is turned off, and D2 is turned on. In this way, neither of the two workpieces W1 and W2 shown in FIG. 1 in the control command [1] or [2] is connected to the measuring device 103. Utilizing this situation, as shown in Fig. 4, when the number of inspection target workpieces increases, neither of the corresponding two workpieces is connected to the control input setting section 2a of the selection unit 1 of the measuring device 103, and the control section sends control Command [1] or [2]. Thereby, a state where neither of the two workpieces corresponding to the selection unit 1 is connected to the measuring device 103 can be easily realized.

It can be seen from these contents that when the number of workpieces increases, the selection unit 1, the current generation unit 2, and the display unit 5 are added, and the function of the selection unit 1 can be easily expanded. In addition, the software of the control unit 6 to realize the expansion of the function only sends control commands [1] or [2] (current stop mode) and control commands [3] (reverse current application) to the plural control input setting unit 2a. Mode), control command [4] (forward current application mode) 3 control commands. Moreover, as mentioned above, there is no situation where different workpieces are connected to the measuring device at the same time due to each control. Therefore, the reliability of the selection unit 1 and the current generating unit 2 is further improved, and the software is simplified and the reliability is further improved.

Furthermore, in Figure 4, the number of workpieces is set to four, but even in a situation where the number of workpieces is increased, the number of selection units 1, current generation unit 2, and display unit 5 can be increased in the same way, by The above-mentioned three mode switching control units 6 send control commands to the control input setting unit 2a to easily respond.

In addition, the drive groups DG11, DG12, DG21, and DG22 related to this embodiment are connected in series with two electromagnetic coils, but it is not limited to this. For example, the drive groups DG11, DG12, DG21, and DG22 may be composed of one electromagnetic coil. can. In the above description, it is assumed that two drive group pairs DGP1 and DGP2 are connected in series to form a drive group pair block DGPB1. However, the drive group pair DGP1 and DGP2 that form a drive group pair block DGPB1 only One is fine.

As described above, according to this embodiment, the first drive groups DG11 and DG12 of the electromagnetic coils Rc11 to Rc14 corresponding to the mechanical contacts Rs11 to Rs14 of the first wiring path related to the workpiece W1 are connected in series, corresponding to the series connection The second drive groups DG21 and DG22 of the electromagnetic coils Rc21 to Rc24 that connect the mechanical contacts Rs21 to Rs24 of the second wiring path related to the workpiece W2 have rectification in different directions, and connect these two drive groups to Between node n1 and node n4, the direction of current is switched and applied between node n1 and node n4. This prevents the mechanical contacts Rs11 and Rs14 of the first drive group DG11 and DG12 and the mechanical contacts Rs21 and Rs24 of the second drive group DG21 and DG22 from being closed at the same time. When one of the plural workpieces W1 and W2 is selected to be connected to the measuring device, different workpieces can be connected to the measuring device 103 at the same time, avoiding different workpieces.

In addition, the display unit 5 is connected in series to one end of the first drive group DG11, DG12, and the light emitting diode D1 that lights up when the current flows in the same direction as the rectification direction of the first drive group DG11, DG12 is connected in series with It is connected to one end of the second drive group DG21, DG22, and it is constituted by the light-emitting diode D2 that lights up when the current flows in the same direction as the rectification direction of the second drive group DG21, DG22, so it can also be connected to the measuring device. The situation where the workpieces W1 and W2 of 103 do not match the workpieces W1 and W2 shown on the display unit 5.

Furthermore, the electromagnetic coils Rc11 to Rc14 and the light emitting diode D1 are connected in series, and the electromagnetic coils Rc21 to Rc24 and the light emitting diode D2 are connected in series. Therefore, the electromagnetic coils Rc11 to Rc14 and the light emitting diode D1 are connected in series. The coils Rc21 to Rc24 and the control commands for the current flowing through the light emitting diode D2 only need three types of current stop mode, reverse current application mode, and forward current application mode, so the reliability of the software can be improved. Also, if the wiring of the electromagnetic coils Rc11 to Rc14 and light emitting diode D1 connected in series, or the wiring of the electromagnetic coils Rc21 to Rc24 and light emitting diode D2 is disconnected, multiple mechanical contacts Rs11 to Rs14 or multiple mechanical contacts Rs21 to Rs24 It does not operate at the same time, so it is easier to judge the disconnection. (A modification of the embodiment)

The selection unit 1 according to an embodiment uses electromagnetic relays R11 to R24 in order to make the wiring path connecting the measuring device 103 and the workpieces W1 and W2 into a disconnected state or a conductive state. On the other hand, in a modification of the embodiment , The use of semiconductor relay PC11 ~ PC24 is different. The following describes the differences from one embodiment. In addition, in the following description, the same reference numerals are given to components having functions and structures equivalent to those of the route selection system 10 related to an embodiment, and the description is omitted except for necessary situations.

FIG. 5 is a diagram showing the structure of a route selection system 10x related to a modification of the embodiment. As shown in FIG. 5, a selection unit 1x is provided instead of the selection unit 1 of the path selection system 10. That is, the selection unit 1x replaces the electromagnetic relays R11 to R24 in FIG. 1 with the relays PC11 to PC24 (hereinafter referred to as "semiconductor relays") which are semiconductor elements called semiconductor relays or solid state relays. The semiconductor relays PC11 to PC24 are sometimes called photoMOSFETs or PhotoMOSFETs. The semiconductor relay PC11 is equipped with a light emitting diode PD11 and an FET (Field Effect Transistor) PQ11. That is, when no forward current is applied to the light-emitting diode PD11, the drain-source of the FETPQ11 is in the blocking state (OFF). In addition, when a forward current is applied to the light emitting diode PD11 to emit light, the drain-source of the FETPQ11 is in a conduction state (ON). Then, when the application of the forward current is stopped, the light emitting diode PD11 is turned off, and the drain-source gap of FETPQ11 returns to the blocking state (OFF) again. The same applies to the other semiconductor relays PC12 to PC24. In this way, FETs PQ11 to PQ24 switch operations according to the light emitting state of the corresponding light emitting diodes PD11 to PD24. The light emitting diodes PD11 to PD24 are electrically insulated from FETPQ11 to PQ24. Even if noise is superimposed on the side of the circuit connected to the light emitting diode PD11, the noise will not be transmitted to the side of the circuit connected to FETPQ11, improving the noise resistance. In addition, the path opening/closing unit according to this embodiment has field effect transistors PQ11 to PQ24, and the opening/closing control unit according to this embodiment has light emitting diodes PD11 to PD24.

As shown in FIG. 5, the connection method of the light emitting diodes PD11 to PD24 in each semiconductor relay PC11 to PC24 is the same as the connection method of the electromagnetic coils Rc11 to Rc24 in FIG. Here, in FIG. 5, the polarities of the plural light-emitting diodes PD11 to PD14 are set to be the same and connected to form the first driving group. Similarly, by connecting the plural light-emitting diodes PD21 to PD24 Set the polarity to be the same and connect to form the second drive group. That is, the first drive group and the second drive group are connected in parallel in such a way that currents flow in opposite directions to each other to form a drive group pair. In this way, the light-emitting diodes PD11 to PD24 have polarities to form each drive group, so the diodes D11, D12, D21, and D22 in FIG. 1 are not used in FIG. 5.

As described above, according to the modification of one embodiment, the semiconductor relays PC11 to PC24 constitute a relay. Thereby, the same effect as the first embodiment can be obtained, and the selection unit 2 can be reduced in size, and magnetic interaction and the like can be suppressed.

In addition, in the above description, it is assumed that each two probes are in contact with the workpieces W1 to W4 related to the present embodiment, but the number of contact probes is not limited to two. In addition, two electrodes are formed on one workpiece related to this embodiment, but it is not limited to this, and the number of electrodes may be 3 or more, for example. In addition, it is assumed that one component is contained in one workpiece, but it is not limited to this, and one workpiece may contain two or more plural components. In addition, in the present embodiment, the case where the plural electrical wirings are connected to the plural electronic components, that is, the plural workpieces has been described, but it is not limited to this, and the plural electrical wirings are connected to the plural embedded in one electronic component. Components can also be used.

Furthermore, in the above description, it is assumed that the display unit 5 that can visually confirm the workpieces W1 to W4 being inspected connected to the measuring device 103 is provided, but the display unit 5 may not be provided. In addition, in the above description, the path selection system 10 is configured to connect the input or output of the voltage or current of the measuring device 103 and the plural probes contacting the electrodes of the plural workpieces W1 to W4. However, the configuration has certain functions In the case of connecting the voltage or current input or output of the electrical circuit, such as an amplifier circuit or filter, to the electrode itself of the plural workpieces W1 to W4, instead of the measuring device 103, the present invention can also be applied. To the control method of the path selection system 10.

As mentioned above, several embodiments of the present invention have been described, but these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, substitutions, and changes can be made without departing from the gist of the invention. These embodiments and their modifications are included in the scope and spirit of the modifications, and are included in the invention described in the scope of patent application and its equivalent scope.

1, 101‧‧‧Selection unit 2‧‧‧Current generation part 2a‧‧‧Control input setting part 5‧‧‧Display part 6‧‧‧Control part 7‧‧‧First rectification part 8‧‧‧Second rectification Section 10‧‧‧Route selection system 102‧‧‧Current generation unit 102a‧‧‧Control input setting unit 103‧‧‧Measurement device 103a‧‧‧Constant power flow 103b‧‧‧DC voltmeter 104a1～104d1, 104a2～104d2 ‧‧‧Probe W1, W2, W3, W4‧‧‧Workpiece W1a, W1b, W2a, W2b‧‧‧Electrode D1, D2‧‧‧Light-emitting diode DRV0～DRV10‧‧‧Driver DC01, DC02, DC1～ 10‧‧‧Control input DS0～DS10‧‧‧Drive output PD11～D24‧‧‧Light-emitting diodes D11, D12, D21, D22‧‧‧Diodes RL11～RL24‧‧‧Electromagnetic relay Rc11～Rc24‧‧ ‧Coil Rs11～Rs24‧‧‧Mechanical contact PC11～PC24‧‧‧Semiconductor relay PQ11～PQ24‧‧‧FETDG11, DG12‧‧‧The first drive group DG21, DG22‧‧‧The second drive group n1～n4 ‧‧‧Node IH‧‧‧Current output terminal IL‧‧‧Current input terminal VH‧‧‧Voltage input terminal VL‧‧‧Voltage input terminal

[Fig. 1] Fig. 1 is a diagram showing the structure of a route selection system related to an embodiment.　　[Fig. 2] Fig. 2 is extracted from the path selection system of Fig. 1 and reveals the current generating part, the diode, the electromagnetic coil, and the display part. [Fig. 3A] Fig. 3A is a diagram showing the relationship between the control input of the driver of Fig. 1, the output of the driver, the direction of current flowing through each drive group, and the current of the electromagnetic coil of the electromagnetic relay as a truth table. . [Fig. 3B] Fig. 3B shows the control input of the driver of Fig. 1, the output of the driver, the direction of the current flowing in each drive group, the state of the mechanical contact of the electromagnetic relay, the light-emitting state of the light-emitting diode, and The relationship between the connection state of the workpiece and the measuring device is shown as a truth table.　　 [Fig. 4] Fig. 4 is a diagram showing the increase in selection units when the number of inspection objects increases.　　 [FIG. 5] FIG. 5 is a diagram showing the structure of a route selection system related to a modification of an embodiment.　　[Figure 6] Figure 6 is a diagram showing the structure of the previous path selection system.　　[Fig. 7] Fig. 7 is a diagram showing the current generating unit, electromagnetic coil, and display unit extracted from the path selection system of Fig. 6.　　 [FIG. 8A] FIG. 8A is a diagram showing the relationship between the control input to the driver and the output of the driver in FIG. 6 as a truth table.　　 [Fig. 8B] Fig. 8B is a diagram showing the relationship between the control input of the driver in Fig. 6, the mechanical contacts of the electromagnetic relay, and the state of the light-emitting diode as a truth table.　　 [Fig. 8C] Fig. 8C is a diagram showing the relationship between the control input of the driver, the mechanical contact of the electromagnetic relay, and the connection between the workpiece and the measuring device as a truth table.

1‧‧‧Select Unit

2‧‧‧Current generating part

2a‧‧‧Control input setting section

5‧‧‧Display

6‧‧‧Control Department

10‧‧‧Path selection system

103‧‧‧Detector

103a‧‧‧Constant power flow

103b‧‧‧DC Voltmeter

104a1, 104a2, 104b1, 104b2, 104c1, 104c2, 104d1, 104d2‧‧‧ Probe

W1, W2‧‧‧Workpiece

W1a, W1b, W2a, W2b‧‧‧ electrode

D1, D2‧‧‧Light Emitting Diode

DC01, DC02‧‧‧Control input

DRV0‧‧‧Drive

DS0‧‧‧Drive output

D11, D12, D21, D22‧‧‧Diode

RL11~RL14, RL21~RL24‧‧‧Electromagnetic Relay

Rc11~Rc14、Rc21~Rc24‧‧‧Coil

Rs11~Rs14, Rs21~Rs24‧‧‧Mechanical contacts

n1~n5‧‧‧node

IH‧‧‧Current output terminal

IL‧‧‧Current input terminal

Vd‧‧‧Constant voltage

VH‧‧‧Voltage input terminal

VL‧‧‧Voltage input terminal

Claims (14)

A path selection system, characterized by comprising: a selection unit having a first rectifying part that flows current in a first direction, and a second rectifying part that flows current in a second direction opposite to the first direction, and the first rectifier The two ends of the second rectifying section are connected in parallel with the two ends of the second rectifying section in the opposite direction, and the object to be connected to the predetermined electrical circuit device is selected; the current generating section is generated to flow through the first The current of the rectifying part or the second rectifying part; and the control part which controls the current generating part; the first rectifying part and the second rectifying part each have an on-off control part of at least one relay; in response to the on-off status of the relay Switch the connection between the electrical circuit device and the object; select as the candidate for the object as the selection unit, and set the first object and the second object; when the first rectifier unit flows current in the first direction The electrical circuit device is connected to the first object; when the second rectifying unit flows current in the second direction, the electrical circuit device is connected to the second object. Such as the route selection system described in item 1 of the scope of patent application, in which: The current generating unit has a state in which current flows in the first direction, a state in which current flows in a second direction opposite to the first direction, and a state in which no current flows in any direction. The route selection system described in the first item of the scope of patent application, wherein the relay includes a plurality of first relays provided in the first rectifying part, and a plurality of second relays provided in the second rectifying part; The first relay is to synchronously conduct or interrupt the respective input and output paths; the aforementioned plural second relays are to synchronously conduct or interrupt the respective output and input paths. For example, the path selection system described in the first item of the scope of the patent application, wherein the current generating unit is configured to prevent the first rectifying part and the second rectifying part when current does not flow through the first rectifying part and the second rectifying part. 2 The current supply node of the rectifier is set to a high resistance state. For example, the path selection system described in item 1 of the scope of the patent application includes a plurality of the aforementioned selection units that share the aforementioned electrical circuit devices; corresponding to each of the aforementioned plural selection units, the aforementioned at least A relay and the aforementioned objects. The route selection system described in the 5th item of the scope of patent application, wherein the control unit is configured to flow the current in the first direction or the second direction in a specific selection unit among the plurality of selection units for the current generation unit The control of the current generation unit is performed so that the relays of the selection units other than the specific selection unit in the plurality of the selection units do not flow current. The path selection system described in the first item of the scope of the patent application, wherein the first rectifying part and the second rectifying part each have a rectifying element in addition to the relay. For example, the route selection system described in item 7 of the scope of patent application, wherein the aforementioned relay is an electromagnetic relay; the aforementioned relay has: the aforementioned opening and closing control unit with electromagnetic coils; and the path opening and closing unit with mechanical contacts; The first rectifying part and the second rectifying part each have a circuit in which a plurality of the electromagnetic coils and one or more rectifying elements are connected in series in a predetermined order. The path selection system described in item 8 of the scope of patent application, wherein the path opening and closing part of the relay is electrically insulated from the corresponding opening and closing control part; the opening and closing control part has a rectifying function. As for the route selection system described in item 6 of the scope of patent application, the relay has: the opening and closing control unit has a first light-emitting diode; and the path opening and closing unit has a light-emitting diode according to the first The first rectifying part and the second rectifying part each have a circuit in which a plurality of the first light-emitting diodes are connected in series in a predetermined order. The path selection system described in the first item of the scope of patent application, including: a second light-emitting diode, which is connected to one end of the first rectifying part, and lights when current flows in the first direction; and a third The light emitting diode is connected to one end of the second rectifying part, and lights up when current flows in the second direction. Such as the route selection system described in item 1 of the scope of patent application, which Wherein, one end of the first rectifying part is connected to the first node, the other end is connected to a second node different from the first node, one end of the second rectifying part is connected to the first node, and the other end is connected to the second node. Node; The relay provided in the first rectifying section is connected to the first wiring path connecting the electrical circuit device and the first object, and the relay provided in the second rectifying section is connected to the electrical The second wiring path between the sexual circuit device and the second object that is different from the first object; the first rectifier section is designed to pass the current in the first direction between the first node and the second node The first wiring path is set to a conductive state; the second rectifying section sets the second wiring path to a conductive state when the current in the second direction flows between the first node and the second node. The route selection system described in the first item of the scope of patent application, wherein the aforementioned object is a chip-type electronic component having at least one of a resistor, a capacitor, and a coil. The route selection system described in the first item of the scope of patent application, wherein the electrical circuit device is a measuring instrument for inspecting the electrical characteristics of the object.

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