An external trigger control device for a laser tracker
By designing an external trigger control device, which uses power switches and relays to convert different types of external trigger signals, the problem of poor universality and flexibility of the external trigger interface of the laser tracker is solved, and unified signal processing and efficient field operation are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 海克斯康制造智能技术(青岛)有限公司
- Filing Date
- 2025-06-12
- Publication Date
- 2026-06-30
AI Technical Summary
The external trigger interface of existing laser trackers can only receive dry contact signals, which means that different types of external trigger signals require different processing methods, resulting in poor versatility and flexibility, and low efficiency in field use.
Design an external trigger control device, including a power switch, a power conversion module, and a relay. By controlling the on/off state of the power switch, the energized state of the relay coil is switched, thereby converting different types of external trigger signals into signals acceptable to the laser tracker controller.
It enables unified processing of different types of external trigger signals on the laser tracker, improving the versatility and flexibility of the device and simplifying on-site operation.
Smart Images
Figure CN224437523U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of laser tracker measurement technology, and specifically to an external trigger control device for a laser tracker. Background Technology
[0002] As a portable, high-precision, high-speed absolute laser measurement system with powerful dynamic six-degree-of-freedom capabilities, the laser tracker integrates numerous advanced measurement functions and is widely used in various industrial fields such as aviation, aerospace, automotive, shipbuilding, manufacturing, and robotics. With the widespread application of measurement equipment and systems, the flexibility and efficiency of measurement are becoming increasingly important. To improve the flexibility of the laser tracker, an external trigger interface is reserved on its controller for the input of external trigger signals. The measurement of the laser tracker can be started and stopped by the external trigger signal received through this interface (for example, the measurement of the laser tracker can be started and stopped by the emergency stop signal of an external trigger device of a robot, thereby obtaining the robot's emergency stop distance).
[0003] However, due to the diversity of manufacturers and on-site conditions, the external trigger signal may be a dry contact signal or a 24V DC signal. Currently, to ensure the safety of the laser tracker, the reserved external trigger interface only accepts dry contact signals. Different processing methods are required depending on the type of external trigger signal during measurement (for example, a dry contact signal can be used directly, while a 24V DC signal requires an intermediate relay between the external trigger device and the tracker). This current approach suffers from poor versatility, low flexibility, and low on-site efficiency. Utility Model Content
[0004] In order to solve the above-mentioned technical problems, the purpose of this utility model is to provide an external trigger control device for a laser tracker. By designing an external trigger control box, it can meet the use of different types of external trigger signals, ensuring versatility and flexibility of use.
[0005] To solve the above-mentioned technical problems, the present invention proposes the following technical solution:
[0006] This application relates to an external trigger control device for a laser tracker, including an external trigger control box, the external trigger control box comprising:
[0007] Power switch;
[0008] A power conversion module, wherein the power switch is connected between the AC power and the power supply terminal of the power conversion module, and the power conversion module is used to convert the AC power into DC power.
[0009] The first relay has its coil connected to the output circuit of the power conversion module;
[0010] The second relay has an external trigger signal connected in series with its coil. One end of the series connection is connected to one end of the first wire via the normally closed switch of the first relay and to the positive terminal of the DC power supply via the normally open switch of the first relay. The other end of the series connection is connected to the other end of the first wire via the normally closed switch of the first relay and to the negative terminal of the DC power supply via the normally open switch of the first relay. The switching signal of the normally open switch of the second relay is input to the external trigger port of the laser tracker controller.
[0011] Specifically, when the external trigger signal is a dry contact signal, the power switch is turned on; when the external trigger signal is a DC signal, the power switch is turned off.
[0012] In some embodiments of this application, the external trigger control box further includes:
[0013] The first signal port receives the external trigger signal;
[0014] The second signal port is connected to the normally open switch of the second relay.
[0015] In some embodiments of this application, the external trigger control box further includes:
[0016] The first indicating unit is connected in parallel with the coil of the first relay.
[0017] In some embodiments of this application, the external trigger control box further includes:
[0018] The second indicating unit is connected in parallel with the coil of the second relay.
[0019] In some embodiments of this application, the external trigger control box further includes:
[0020] The power conversion module, the first relay, and the second relay are all disposed within the housing, and the power switch, the first signal port, and the second signal port are disposed on the side wall of the housing.
[0021] In some embodiments of this application, the external trigger control device further includes:
[0022] A signal input unit includes an external trigger line and a third signal port connected to one end of the external trigger line, the other end of the external trigger line being connected to the external trigger signal, and the third signal port being connected to the first signal port;
[0023] The signal output unit includes an output cable and a fourth signal port connected to one end of the output cable. The fourth signal port is connected to the second signal port, and the fourth signal port outputs the switch signal through the output cable.
[0024] In some embodiments of this application, the output cable is a one-to-N cable, and the second signal port has N sets of pins that output the switch signal respectively. Each set of pins corresponds to a bundle of cables, and the switch signal is output to the external trigger port of the tracker controller through a bundle of cables.
[0025] Where N is a natural number greater than 1.
[0026] In some embodiments of this application, the external trigger control device further includes:
[0027] There are N fifth signal ports, one of which is connected to a bundle of cables and is connected to the external trigger port of the tracker controller.
[0028] In some embodiments of this application, the second relay is selected as a solid-state relay.
[0029] In some embodiments of this application, the external trigger signal includes a start / stop external trigger signal and a clock external trigger signal. The start / stop external trigger signal is converted into a signal acceptable to the tracker controller via the switching signal of the normally open switch of the second relay. The external trigger control box further includes:
[0030] The third relay is connected in series with the external clock trigger signal and the coil of the third relay. One end of the series connection is connected to one end of the second wire through the normally closed switch of the first relay and to the positive terminal of the DC power supply through the normally open switch of the first relay. The other end of the series connection is connected to the other end of the second wire through the normally closed switch of the first relay and to the negative terminal of the DC power supply through the normally open switch of the first relay. The switching signal of the normally open switch of the third relay is input to the external clock trigger port of the laser tracker controller.
[0031] Specifically, when the external trigger signal of the clock is a dry contact signal, the power switch is turned on; when the external trigger signal of the clock is a DC signal, the power switch is turned off.
[0032] Compared with the prior art, the external trigger control device for the laser tracker provided in this application has the following advantages and beneficial effects:
[0033] By controlling the on / off state of the power switch through different types of external trigger signals, the coil of the first relay is energized / de-energized, thereby switching the normally open and normally closed switches of the first relay on and off. When the external trigger signal is a dry contact signal, the coil of the second relay is energized, and the dry contact signal is sent to the external trigger interface of the laser controller through the switching signal of the normally open switch of the second relay. When the external trigger signal is a DC signal, the coil of the second relay is also energized, and the DC signal is sent to the external trigger interface of the laser controller through the switching signal of the normally open switch of the second relay. This facilitates the sending of different types of external trigger signals to the external trigger interface, avoiding the need to use different methods to process different types of external trigger signals, and improving the versatility and flexibility of the control device.
[0034] Other features and advantages of this utility model will become clearer after reading the detailed embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description
[0035] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments of this utility model or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0036] Figure 1 This is a schematic diagram showing the connection between the external trigger control device for the laser tracker proposed in this utility model and several tracker controllers.
[0037] Figure 2 This is a circuit diagram showing the connection between the power switch, power conversion module, and first relay in the external trigger control box for the laser tracker proposed in this utility model.
[0038] Figure 3 A circuit diagram showing the connection between the external trigger signal and the second relay in the external trigger control box for the laser tracker proposed in this utility model, for starting and stopping the external trigger signal;
[0039] Figure 4 The circuit diagram shows the connection between the external trigger signal for the clock and the third relay in the external trigger control box for the laser tracker proposed in this utility model.
[0040] Figure 5 This is a schematic diagram of the external trigger control box in the external trigger control device for the laser tracker proposed in this utility model.
[0041] Figure 6 This is a block diagram illustrating the principle of the external trigger signal for the clock and the external trigger control device for the laser tracker proposed in this invention.
[0042] Figure 7 This is a schematic diagram of the first signal port in the external trigger control device for the laser tracker proposed in this utility model;
[0043] Figure 8 This is a schematic diagram of the second signal port in the external trigger control device for the laser tracker proposed in this utility model;
[0044] Figure label:
[0045] 100. External trigger control device; 110. External trigger control box; 111. Power switch; 112. Power conversion module; 113. First relay; 114. Second relay; 115. Third relay; 116A. First indicating unit; 116B. Second indicating unit; 117A. First wire; 117B. Second wire; 118. First signal port; 119. Second signal port; 120. Signal input unit; 121. External trigger line; 122. Third signal port; 131. Fourth signal port; 132. Output cable; 133. Fifth signal port; 140. Normally open switch of the second relay; 150. Normally open switch of the third relay. Detailed Implementation
[0046] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0047] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model. In the description of this utility model, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0048] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. In the description of the above embodiments, specific features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.
[0049] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0050] To enable different types of external trigger signals to trigger the laser tracker, see [link / reference]. Figure 1 This application relates to an external trigger control device 100 for a laser tracker. The external trigger control device 100 includes an external trigger control box 110. In use, the external trigger control box 110 sends an external trigger signal to the external trigger interface (not shown) of the tracker controller.
[0051] In some embodiments of this application, the external trigger signal may include a start / stop external trigger signal and a clock external trigger signal. These signals may be dry contact signals or signals with 24V DC power. The start / stop external trigger signal is used to trigger the start / stop measurement of the laser tracker, and the clock external trigger signal is used to trigger the clock signal of the laser tracker.
[0052] Correspondingly, the external trigger interface of the tracker controller includes a start / stop external trigger interface corresponding to the start / stop external trigger signal and a clock external trigger interface corresponding to the clock external trigger signal.
[0053] In some embodiments of this application, see Figure 2 and Figure 3 The external trigger control box 110 includes a power switch 111, a power conversion module 112, a first relay 113, and a second relay 114.
[0054] Power switch 111 is connected between the AC power supply and the power supply terminal of power conversion module 112. When power switch 111 is on, it supplies power to power conversion module 112, converting the AC power into DC power (e.g., 24V DC). When power switch 111 is off, AC power does not supply power to power conversion module 112, and power conversion module 112 does not output DC power (see [link]). Figure 2The DC power supply is 24V.
[0055] In some embodiments of this application, see Figure 2 The power switch 111 can be a circuit breaker QA, which is operated by the user to turn on and off.
[0056] The first relay 113 serves as an intermediate relay, using its normally open and normally closed switches to convert external trigger signals, enabling the converted external trigger signals to be directly used by the tracker controller.
[0057] See Figure 2 The coil of the first relay 113 is connected in series in the output circuit of the power conversion module 112. When the power conversion module 112 outputs DC power, the DC power supplies power to the coil, and the coil is energized. When the power conversion module 112 does not output DC power, the coil is not energized.
[0058] In some embodiments of this application, in order to indicate the power supply status to the user, see [link to relevant documentation]. Figure 2 The external trigger control box 110 also includes a first indicator unit 116A, which is connected in parallel with the coil of the first relay 113. That is, when the power conversion module 112 outputs DC power, the DC power supplies the first indicator unit 116A and the first indicator unit 116A issues an indication. When the power conversion module 112 does not output DC power, the first indicator unit 116A is not powered and therefore does not issue an indication.
[0059] The first indicator unit 116A can be a red indicator light.
[0060] In some embodiments of this application, the signal conversion is illustrated using an external trigger signal as an example of a start / stop external trigger signal.
[0061] In some embodiments of this application, see Figure 3 The external trigger signal for start / stop is converted into a dry contact signal acceptable to the laser controller by using the contact switch of the second relay 114.
[0062] See Figure 3 The start / stop external trigger signal is represented by the STA switch signal formed by STA+ / STA-.
[0063] The coil of the second relay 114 is connected in series with the start / stop external trigger signal, and one end of the series connection passes through the normally closed switch of the first relay 113 (see...). Figure 3 The stationary contact 11 and the moving contact 12 form a normally closed switch) are connected to one end of the first wire 117A and pass through the normally open switch of the first relay 113 (see...). Figure 3The stationary contact 11 and the moving contact 14 form a normally open switch, which is connected to the positive terminal of the DC power supply. The other end of the series connection is connected to the normally closed switch of the first relay 113 (see [link to relevant documentation]). Figure 3 The stationary contact 21 and the moving contact 22 form a normally closed switch) are connected to the other end of the first wire 117A and pass through the normally open switch of the first relay 113 (see...). Figure 3 (The stationary contact 21 and the moving contact 24 form a normally open switch) are connected to the negative terminal G of the DC power supply.
[0064] The normally open switch of the second relay 114 is input to the start / stop external trigger port of the laser tracker controller.
[0065] In some embodiments of this application, in order to indicate to the user the transmission status of the external trigger signal for starting or stopping, see [link to relevant documentation]. Figure 3 The external trigger control box 110 also includes a second indicator unit 116B, which is connected in parallel with the coil of the second relay 114. That is, when the coil of the second relay 114 is energized, the second indicator unit 116B issues an indication.
[0066] The second indicator unit 116B can be a green indicator light.
[0067] That is, when the external trigger signal for start / stop is a dry contact signal, the operation power switch 111 is turned on, the power conversion module 112 outputs 24V DC power, at which time the coil of the first relay 113 is energized, and at the same time the first indicator unit 116A issues a red light indication.
[0068] The coil of the first relay 113 is energized. At this time, see... Figure 3 When stationary contact 11 and moving contact 14 are connected, and stationary contact 21 and moving contact 24 are connected, the DC power supply 24V supplies power to the coil of the second relay 114. At the same time, the second indicator unit 116B issues a green light indication. At this time, the external trigger control box 110 outputs the switching signal of the normally open switch of the second relay 114. This switching signal can be input to the start / stop external trigger port of the tracker controller to realize the start / stop measurement control of the laser tracker.
[0069] When the external trigger signal for start / stop is a 24V DC signal, the operating power switch 111 is turned off, the power conversion module 112 does not output DC power, the coil of the first relay 113 is not energized, and at the same time the first indicator unit 116A does not issue a red light indication.
[0070] The coil of the first relay 113 is not energized. At this time, see... Figure 3The stationary contact 11 and the moving contact 12 remain connected, and the stationary contact 21 and the moving contact 22 remain connected. At this time, a 24V DC signal flows through the coil of the second relay 114, energizing the coil. Simultaneously, the second indicator unit 116B emits a green light indication. At this time, the external trigger control box 110 outputs the switching signal of the normally open switch of the second relay 114. This switching signal can be input to the start / stop external trigger port of the tracker controller to realize the start / stop measurement control of the laser tracker.
[0071] Thus, depending on the different types of external trigger signals for start and stop, the controller converts the signal into a dry contact signal acceptable to the tracker controller, thereby realizing the start and stop measurement control of the laser tracker based on the external trigger signals for start and stop.
[0072] In some embodiments of this application, in order to facilitate the use of the external trigger control box 110, the external trigger control box 110 is provided with a housing (not shown). The power conversion module 112, the first relay 113, and the second relay 114 are all disposed in the internal space of the housing. The power switch 111 is disposed on the side wall of the housing for easy operation by the user. The external trigger control box 110 has an input interface for connecting to the start / stop external trigger signal and an output interface for outputting the converted switch signal, which facilitates wiring operations during field use.
[0073] The first indicator unit 116A and the second indicator unit 116B can also be set on the side wall of the housing for easy observation by the user.
[0074] As mentioned above, the second relay 114 can be a solid-state relay, which has a short operating time and high real-time performance.
[0075] In some embodiments of this application, the external trigger control box 110 may also receive other external trigger signals, such as a clock external trigger control signal.
[0076] In some embodiments of this application, see Figure 4 The external clock trigger signal is represented by the CLK switching signal formed by CLK+ / CLK-.
[0077] The external trigger control box 110 receives the CLK switch signal in the same way as it receives the STA switch signal as described above, and also uses a relay contact switch to convert it into a dry contact signal acceptable to the laser controller in order to control the clock signal of the laser tracker.
[0078] In some embodiments of this application, see Figure 4 The external trigger control box 110 includes a third relay 115.
[0079] An external clock trigger signal is connected in series with the coil of the third relay 115, and one end of the series connection passes through the normally closed switch of the first relay 113 (see...). Figure 4 The stationary contact 31 and the moving contact 32 form a normally closed switch) are connected to one end of the second wire 117B and pass through the normally open switch of the first relay 113 (see...). Figure 4 The stationary contact 31 and the moving contact 34 form a normally open switch, which is connected to the positive terminal of the DC power supply. The other end of the series connection is connected to the normally closed switch of the first relay 113 (see [link to relevant documentation]). Figure 4 The stationary contact 41 and the moving contact 42 form a normally closed switch) are connected to the other end of the second wire 117B and pass through the normally open switch of the first relay 113 (see...). Figure 4 (The stationary contact 41 and the moving contact 44 form a normally open switch) are connected to the negative terminal G of the DC power supply.
[0080] The normally open switch signal of the third relay 115 is input to the external trigger port of the clock of the laser tracker controller.
[0081] That is, when the external trigger signal of the clock is a dry contact signal, the operation power switch 111 is turned on, the power conversion module 112 outputs 24V DC power, at which time the coil of the first relay 113 is energized, and at the same time the first indicator unit 116A issues a red light indication.
[0082] The coil of the first relay 113 is energized. At this time, see... Figure 4 When stationary contact 31 and moving contact 34 are connected, and stationary contact 41 and moving contact 44 are connected, the DC power supply 24V supplies power to the coil of the third relay 115. At this time, the external trigger control box 110 outputs the switching signal of the normally open switch of the third relay 115. This switching signal can be input to the external trigger port of the tracker controller to control the clock signal of the laser tracker.
[0083] When the external trigger signal of the clock is a 24V DC signal, the operating power switch 111 is turned off, the power conversion module 112 does not output DC power, the coil of the first relay 113 is not energized, and at the same time the first indicator unit 116A does not issue a red light indication.
[0084] The coil of the first relay 113 is not energized. At this time, see... Figure 4 The stationary contact 31 and the moving contact 32 remain connected, and the stationary contact 41 and the moving contact 42 remain connected. At this time, a 24V DC signal flows through the coil of the third relay 115, energizing the coil. At this time, the external trigger control box 110 outputs the switching signal of the normally open switch of the third relay 115. This switching signal can be input to the external trigger port of the tracker controller to control the clock signal of the laser tracker.
[0085] Thus, depending on the type of external clock trigger signal (dry contact signal or signal with 24V DC power), the external clock trigger signal is converted into a dry contact signal acceptable to the tracker controller, thereby controlling the clock signal of the laser tracker based on the external clock trigger signal.
[0086] As mentioned above, the third relay 115 can be a solid-state relay, which has a short operating time and high real-time performance.
[0087] For ease of on-site wiring, please refer to Figure 5 The external trigger control box 110 includes a first signal port 118 and a second signal port 119. The first signal port 118 serves as the input interface of the external trigger control box 110 for receiving start / stop external trigger signals, and the second signal port 119 serves as the output interface of the external trigger control box 110 for outputting the converted switch signals.
[0088] The first signal port 118 and the second signal port 119 can be male or female, facilitating pluggable connection.
[0089] In some embodiments of this application, for ease of field connection, see [link to relevant documentation]. Figure 6 The external trigger control device 100 also includes a signal input unit 120 and a signal output unit 130.
[0090] The signal input unit 120 includes an external trigger line 121 and a third signal port 122 connected to the external trigger line 121. The external trigger line 121 is used to receive an external trigger signal, and the third signal port 122 is used to connect with the first signal port 118. For example, when the first signal port 118 is a female connector, the third signal port 122 is a corresponding male connector.
[0091] The signal output unit 130 includes an output cable 132 and a fourth signal port 131 connected to the output cable 132. The fourth signal port 131 is connected to the second signal port 119 and is used to output the converted switch signal through the output cable 132 via the fourth signal port 131.
[0092] For example, when the second signal port 119 is a female connector, the fourth signal port 131 is the corresponding male connector.
[0093] Sometimes, multiple laser trackers need to be triggered by the same external trigger signal. To facilitate the wiring of each laser tracker, the output cable 132 can be designed as a one-to-N cable (N is a natural number greater than 1). When used in the field, it is convenient to connect to multiple laser trackers at the same time, eliminating the need for on-site wiring. Wiring can be achieved simply by plugging and unplugging the port, greatly reducing the workload and improving efficiency.
[0094] In order to enable the converted output switch signal to trigger multiple laser trackers simultaneously, the number of pins outputting the switch signal from the second signal port 119 should be N, and the fourth signal port 131 is connected to the second signal port 119.
[0095] The one-to-N cable includes N bundles of cables. A set of pins corresponding to the output of the switch signal is connected to one bundle of cables, so that the switch signal is output through one bundle of cables to trigger a laser tracker.
[0096] With N cables present, N laser trackers can be triggered simultaneously.
[0097] For easy connection to the external trigger interface of the tracker controller, please refer to [link / reference]. Figure 6 The external trigger control device 100 also includes N fifth signal ports. One fifth signal port is connected to a bundle of cables to receive the converted output switch signal, and another fifth signal port is connected to the external trigger port of the tracker controller of a laser tracker.
[0098] When using the external trigger control device 100 on site, it is only necessary to plug in the corresponding signal ports, which is convenient for on-site wiring and reduces the difficulty and workload of the work; and it can trigger multiple laser trackers at the same time, improving work efficiency.
[0099] In some embodiments of this application, the output cable 132 is a one-to-five cable, used to simultaneously trigger five laser trackers.
[0100] See Figure 7 and Figure 8 The first signal port 118 can be a DB9 female connector and the third signal port 122 can be a DB9 male connector. The second signal port 119 can be a DB26 female connector and the fourth signal port 131 can be a DB26 male connector. The fifth signal port is a DB9 female connector and is connected to an external trigger port that is a DB9 male connector.
[0101] The first signal port 118 can be selected as a DB9 female connector, and its four pins are respectively connected to STA+ and STA- of the STA switch signal and CLK+ and CLK- of the CLK switch signal.
[0102] If the external trigger control device 100 uses a one-to-five cable to trigger five laser trackers simultaneously, the second signal port 119 uses a DB26 female connector, where every five pins form a group, used to output the first and second contacts of the normally open switch 140 forming the second relay 114, and the first and second contacts of the normally open switch 150 forming the third relay 115. This group of pins corresponds to one bundle of cables in the one-to-five configuration, used to trigger one laser tracker.
[0103] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. An external trigger control device for a laser tracker, characterized by, Includes an external trigger control box, the external trigger control box comprising: Power switch; A power conversion module, wherein the power switch is connected between the AC power and the power supply terminal of the power conversion module, and the power conversion module is used to convert the AC power into DC power. The first relay has its coil connected to the output circuit of the power conversion module; The second relay has an external trigger signal connected in series with its coil. One end of the series connection is connected to one end of the first wire via the normally closed switch of the first relay and to the positive terminal of the DC power supply via the normally open switch of the first relay. The other end of the series connection is connected to the other end of the first wire via the normally closed switch of the first relay and to the negative terminal of the DC power supply via the normally open switch of the first relay. The switching signal of the normally open switch of the second relay is input to the external trigger port of the laser tracker controller. Specifically, when the external trigger signal is a dry contact signal, the power switch is turned on; when the external trigger signal is a DC signal, the power switch is turned off.
2. The external trigger control device for a laser tracker according to claim 1, wherein, The external trigger control box also includes: The first signal port receives the external trigger signal; The second signal port is connected to the switching signal of the normally open switch of the second relay.
3. The external trigger control device for a laser tracker according to claim 1, wherein, The external trigger control box also includes: The first indicating unit is connected in parallel with the coil of the first relay.
4. The external trigger control device for a laser tracker according to claim 1, wherein, The external trigger control box also includes: The second indicating unit is connected in parallel with the coil of the second relay.
5. The external trigger control device for a laser tracker according to claim 2, wherein, The external trigger control box also includes: The power conversion module, the first relay, and the second relay are all disposed within the housing, and the power switch, the first signal port, and the second signal port are disposed on the side wall of the housing.
6. The external trigger control device for a laser tracker according to claim 2, wherein, The external trigger control device further includes: A signal input unit includes an external trigger line and a third signal port connected to one end of the external trigger line, the other end of the external trigger line being connected to the external trigger signal, and the third signal port being connected to the first signal port; The signal output unit includes an output cable and a fourth signal port connected to one end of the output cable. The fourth signal port is connected to the second signal port, and the fourth signal port outputs the switch signal through the output cable.
7. The external trigger control device for a laser tracker according to claim 6, wherein, The output cable is a one-to-N cable, and the second signal port has N sets of pins that output the switch signal respectively. Each set of pins corresponds to a bundle of cables, and the switch signal is output to the external trigger port of the tracker controller through a bundle of cables. Where N is a natural number greater than 1.
8. The external trigger control device for a laser tracker according to claim 7, wherein, The external trigger control device further includes: There are N fifth signal ports, one of which is connected to a bundle of cables and is connected to the external trigger port of the tracker controller.
9. The external trigger control device for a laser tracker according to claim 1, wherein, The second relay is selected as a solid-state relay.
10. The external trigger control device for a laser tracker according to claim 1, characterized in that, The external trigger signals include a start / stop external trigger signal and a clock external trigger signal. The start / stop external trigger signal is converted into a signal acceptable to the tracker controller through the switching signal of the normally open switch of the second relay. The external trigger control box also includes: The third relay is connected in series with the external clock trigger signal and the coil of the third relay. One end of the series connection is connected to one end of the second wire through the normally closed switch of the first relay and to the positive terminal of the DC power supply through the normally open switch of the first relay. The other end of the series connection is connected to the other end of the second wire through the normally closed switch of the first relay and to the negative terminal of the DC power supply through the normally open switch of the first relay. The switching signal of the normally open switch of the third relay is input to the external clock trigger port of the laser tracker controller. Specifically, when the external trigger signal of the clock is a dry contact signal, the power switch is turned on; when the external trigger signal of the clock is a DC signal, the power switch is turned off.