Interface board arrangement in hydrological telemetry commissioning system
By designing an interface board device in the hydrological telemetry system and using relays to achieve the goal of eliminating the need for rewiring after initial installation, the complexities and safety risks of communication debugging between sensors and telemetry terminals are solved, thus improving debugging efficiency and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO HONGTAI WATER RESOURCES INFORMATION TECH CO LTD
- Filing Date
- 2025-08-31
- Publication Date
- 2026-07-21
Smart Images
Figure CN224537577U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of hydrological telemetry system debugging technology, specifically relating to an interface board device in a hydrological telemetry debugging system. Background Technology
[0002] Hydrological instruments, such as flow meters and water level gauges, are devices used to measure hydrological data. The sensors in these instruments communicate with the telemetry terminal to transmit data. There are many types of sensors used for hydrological measurement. They are generally based on RS232 / RS485 / RS422 interfaces for communication. During the communication process, there are usually two ways for the sensor and the telemetry terminal to communicate: (1) Query type, in which the telemetry terminal first issues a query command, and the sensor responds after receiving the query command; (2) Sensor active reporting type.
[0003] When a hydrological instrument telemetry station malfunctions, to accurately determine whether the problem lies with the telemetry terminal or the sensor, it is usually necessary to disconnect the connection between the telemetry terminal and the sensor, and then use debugging tools to test both the telemetry terminal and the sensor separately. Alternatively, a debugging cable can be used to monitor the communication process between the telemetry terminal and the sensor to check whether data transmission and reception are normal during operation. This is relatively cumbersome, and the equipment box is usually located high up, posing a higher safety risk during operation.
[0004] In the commissioning of hydrological telemetry systems, interface board devices can be used to connect sensors and telemetry terminals, enabling remote signal reporting and improving commissioning efficiency. This application further designs and studies the interface board device in the hydrological telemetry commissioning system. Utility Model Content
[0005] To address the shortcomings of the existing technology, this utility model provides an interface board device in a hydrological telemetry commissioning system, which enables the system to be installed once and then reconnected during subsequent commissioning without the need for disconnection and rewiring, thus greatly improving commissioning efficiency.
[0006] The present invention is solved by the following technical solution.
[0007] An interface board device in a hydrological telemetry commissioning system includes an interface board with a sensor side and a telemetry terminal side, and corresponding matching interfaces on the sensor side and the telemetry terminal side; the interface board has a relay inside for connecting the corresponding interfaces; the sensor side has a number of sensor side interfaces, and the telemetry terminal side has a number of telemetry terminal side interfaces.
[0008] In a preferred embodiment, the sensor side is provided with six interfaces: sensor side interface 2.1, sensor side interface 2.2, sensor side interface 2.3, sensor side interface 2.4, sensor side interface 2.5, and sensor side interface 2.6; the telemetry terminal side is provided with six corresponding interfaces: telemetry terminal side interface 1.1, telemetry terminal side interface 1.2, telemetry terminal side interface 1.3, telemetry terminal side interface 1.4, telemetry terminal side interface 1.5, and telemetry terminal side interface 1.6; sensor side interfaces 2.1 and 2.2 are the positive and negative power supply interfaces, respectively; telemetry terminal side interfaces 1.1 and 1.2 are the positive and negative power supply interfaces, respectively; sensor side interface 2.3 is the Tx signal line for connecting the sensor to an RS232 signal, an A signal for an RS485 signal, or an RS422 signal transmitter. The telemetry terminal side interface 1.3 is an Rx signal line for connecting the telemetry terminal's RS232 signal, or an A signal line for connecting the RS485 signal, or an A signal line for connecting the RS422 signal receiver; the sensor side interface 2.4 is an Rx signal line for connecting the sensor's RS232 signal, or a B signal line for connecting the RS485 signal, or a B signal line for connecting the RS422 signal transmitter; the telemetry terminal side interface 1.4 is a Tx signal line for connecting the telemetry terminal's RS232 signal, or a B signal line for connecting the RS485 signal, or a B signal line for connecting the RS422 signal receiver; the sensor side interface 2.5 is an A signal for the RS422 signal receiver; the telemetry terminal side interface 1.5 is an A signal for the RS422 signal transmitter; the sensor side interface 2.6 is a B signal for the RS422 signal receiver; the telemetry terminal side interface 1.6 is a B signal for the RS422 signal transmitter.
[0009] In a preferred embodiment, within the interface board, the corresponding interfaces on the sensor side and the telemetry terminal side are connected using normally closed contacts of relays, wherein: sensor-side interfaces 2.1 and 2.2 are connected to telemetry terminal-side interfaces 1.1 and 1.2 using power relays; and sensor-side interfaces 2.3, 2.4, 2.5, and 2.6 are connected to telemetry terminal-side interfaces 1.3, 1.4, 1.5, and 1.6 using normally closed contacts of signal relays.
[0010] In a preferred embodiment, a current sampling resistor is connected in series in the path of the sensor-side interface 2.1 and / or the telemetry terminal-side interface 1.1 for measuring the current of the power supply.
[0011] Compared with the prior art, the present invention has the following advantages: it provides an interface board device in a hydrological telemetry commissioning system, which can realize the operation of disconnecting and reconnecting the wires during subsequent commissioning after the initial installation, thus greatly improving the commissioning efficiency. Attached Figure Description
[0012] Figure 1 This is a schematic diagram showing the connection relationship of the various modules in this utility model.
[0013] Figure 2 This is a schematic diagram of the interface board in this utility model.
[0014] Figure 3 This is a circuit diagram of a radar level gauge station in a specific embodiment of this application. Detailed Implementation
[0015] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0016] In the following embodiments, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.
[0017] See Figures 1 to 3 This application relates to an interface board device in a hydrological telemetry debugging system.
[0018] Specifically, the interface board device includes an interface board for connecting telemetry terminals and sensors, and can be installed in an equipment box in the field.
[0019] The interface board's telemetry terminal side interface connects to the output power supply of the telemetry terminal or the system power supply, as well as the communication interface between the telemetry terminal and the sensor. The communication interface supports one of RS232 / RS485 / RS422.
[0020] The sensor side of the interface board connects the sensor power supply and the communication interface. The communication interface needs to be the same type as the communication interface accessed by the telemetry terminal. That is, if the telemetry terminal uses RS232, then the sensor side also needs to use RS232.
[0021] from Figure 2As can be seen, in this application, the interface board has three types of interfaces: the sensor side connects to sensors (such as flow meters and water level gauges), and the telemetry terminal side connects to telemetry terminals (or PLCs, etc.); six symmetrical interfaces are set on both sides; at the same time, the interface board also has a 20-pin ribbon cable interface, which connects to the logic switching board. In its natural state, that is, when the logic switching board is not connected, the sensor side and the telemetry terminal side are in a direct communication state; in use, it supports the use of one of the following signals: RS232 signal, RS485 signal, and RS422 signal. That is, the communication signal on the telemetry terminal side must be consistent with the signal interface on the sensor side. That is, if the telemetry terminal uses an RS232 signal, the sensor must also use an RS232 signal.
[0022] Specifically, the sensor side is equipped with six interfaces: sensor side interface 2.1, sensor side interface 2.2, sensor side interface 2.3, sensor side interface 2.4, sensor side interface 2.5, and sensor side interface 2.6; the telemetry terminal side is equipped with six corresponding interfaces: telemetry terminal side interface 1.1, telemetry terminal side interface 1.2, telemetry terminal side interface 1.3, telemetry terminal side interface 1.4, telemetry terminal side interface 1.5, and telemetry terminal side interface 1.6.
[0023] The specific settings for the interface are as follows.
[0024] In the interfaces on the telemetry terminal side: Telemetry terminal side interface 1.1 is the positive power supply interface, and telemetry terminal side interface 1.2 is the negative power supply interface. It connects to the output power supply of the telemetry terminal or the system power supply of the telemetry station. Telemetry terminal side interfaces 1.3~1.6 are signal interfaces. Telemetry terminal side interface 1.3 is defined as the Rx signal line connecting to the telemetry terminal's RS232 signal, or the A signal line connecting to the RS485 signal, or the A signal line connecting to the RS422 signal receiver. Telemetry terminal side interface 1.4 is defined as the Tx signal line connecting to the telemetry terminal's RS232 signal, or the B signal line connecting to the RS485 signal, or the B signal line connecting to the RS422 signal receiver. Telemetry terminal side interface 1.5 is defined as the A signal connecting to the RS422 signal transmitter; telemetry terminal side interface 1.6 is defined as the B signal connecting to the RS422 signal transmitter.
[0025] In the sensor-side interfaces: Sensor-side interface 2.1 is the positive power supply interface, and sensor-side interface 2.2 is the negative power supply interface. This connects to the sensor's input power supply. Sensor-side interface 2.3 is defined as the Tx signal line for connecting the sensor's RS232 signal, or the A signal line for connecting the RS485 signal, or the A signal line for connecting the RS422 signal transmitter. Sensor-side interface 2.4 is defined as the Rx signal line for connecting the sensor's RS232 signal, or the B signal line for connecting the RS485 signal, or the B signal line for connecting the RS422 signal transmitter. Sensor-side interface 2.5 is defined as the A signal line for connecting the RS422 signal receiver; sensor-side interface 2.6 is defined as the B signal line for connecting the RS422 signal receiver.
[0026] In this application, within the interface board, the corresponding interfaces on the sensor side and the telemetry terminal side are connected using normally closed contacts of relays. Specifically: Sensor-side interfaces 2.1 and 2.2 are connected to telemetry terminal-side interfaces 1.1 and 1.2 using power relays, which can accommodate switching between 60V DC voltage and 10A current. A 10mΩ current sampling resistor is connected in series in the path between telemetry terminal-side interface 1.1 and sensor-side interface 2.1, which can be used to measure the current at the positive terminal of the power supply. Telemetry terminal-side interfaces 1.3~1.6 are connected to sensor-side interfaces 2.3~2.6 using normally closed contacts of signal relays, which can accommodate switching between 30V voltage and 1A current.
[0027] In this application, all relays use a 5V DC drive voltage, and an LED is connected in parallel at the coil position. When the relay is energized, the LED lights up, indicating that the circuit between the sensor side and the telemetry terminal side has been disconnected and is in an open-circuit state. The interface board consists only of connector terminals and relays, making it extremely low-cost and compact. It can be installed on rails or with mounting ears, and can be installed and configured at each hydrological monitoring station that requires commissioning.
[0028] In addition, in this application, the interface board also has a 20-pin ribbon cable socket. The telemetry terminal side interfaces 1.1 to 1.6 are respectively connected to pins 3.1 to 3.6 of the 20-pin ribbon cable socket, the sensor side interfaces 2.1 to 2.6 are respectively connected to pins 3.7 to 3.12 of the 20-pin ribbon cable socket, and the coils of the three relays are respectively connected to the 20-pin ribbon cable socket, that is, pins 4.1 to 4.6 are respectively connected to pins 3.13 to 3.18.
[0029] The 20-pin ribbon cable between the interface board and the logic switching board has a foolproof design at both ends to prevent reverse insertion, and it also has clips to prevent it from falling off during debugging. On the sensor side of the interface board, there is an optional 120-ohm terminating resistor, which can be enabled or disabled via a jumper cap. The terminating resistor in the communication line matches the characteristic impedance, eliminates signal reflections to improve signal quality, provides a discharge path for parasitic capacitance, and stabilizes the bus idle state.
[0030] The interface board device in this application is part of an efficient debugging tool for a hydrological telemetry system. The debugging tool consists of three parts: an interface board, a logic switching board, and a host computer.
[0031] The logic switching board is the core of the entire debugging tool. It is carried by the installation and debugging personnel and connects to the interface board using a 20-pin ribbon cable during debugging. The logic switching board can be debugged using a USB wired connection to a computer or a wireless connection via a WeChat Bluetooth mini-program. Internally, the logic switching board contains a microcontroller and various chips such as RS232 / RS485. Under the control of the host computer, the internal circuitry can be switched to achieve switching and communication between the RS232 / RS485 / RS422 interfaces.
[0032] Both the PC-based host computer and the WeChat mini-program host computer can perform the same debugging functions, but only one of the host computer programs can be used during debugging. The host computer can control the logic switching board to switch between different interfaces and display the voltage and current information of the power supply on the interface board. It can also monitor the communication between the devices on both sides of the interface board or communicate independently with the telemetry terminal or sensor.
[0033] The mounting relationship of the interface board in one specific embodiment of this application is shown in the attached figure. Figure 3 As shown, the power supply of the telemetry terminal and the power interfaces (1.1 and 1.2) on the telemetry terminal side of the interface board are connected to the positive and negative terminals (V+ and V-) of the battery via "Power 12V+" and "Power GND". The RS485 communication line of the telemetry terminal is directly connected to the RS485 interfaces (1.3 and 1.4) on the telemetry terminal side of the interface board via "Communication RS485A" and "Communication RS485B". The power input of the radar level gauge is directly connected to the power supply (2.1 and 2.2) on the sensor side of the interface board, and the RS485 communication interface of the radar level gauge is directly connected to the communication interfaces (2.3 and 2.4) on the sensor side of the interface board. At this time, all relays on the interface board are normally closed, that is, the sensor side and the telemetry terminal side are in a direct connection state, and the indicator lights are all off. Supplement: In the wiring of hydrological telemetry stations using sensors with RS232 or RS422 interfaces, the wiring method is similar to that of the radar water level station with RS485, that is, the power supply and communication signals are connected to the telemetry terminal and the sensor through the interface board.
[0034] After the interface board is installed, it can be connected to the logic switching board to achieve direct communication with the sensor. After direct connection, parameters such as the acquisition frequency can be set according to the radar level gauge's instruction manual. After debugging, the ribbon cable between the interface board and the logic switching board can be directly disconnected, and all relays in the interface board will return to their normally closed state, meaning that the telemetry terminal side and the sensor side are directly connected.
[0035] When leaving the debugging site, simply take the logic switching board with you and leave the interface board in the equipment box. During the next debugging session, you only need to use a ribbon cable to connect the interface board and the logic switching board. There is no need to carry tools such as wire strippers.
[0036] Compared to existing technologies, the technical solution in this application employs a unique interface board device, eliminating the need for repeated wiring during debugging and avoiding the problem of low debugging efficiency caused by wiring errors. The interface board is low-cost and versatile in installation, and features normally closed relays to ensure convenient switching of the connection status between the sensor and the telemetry terminal before and after debugging.
[0037] The technical solution of this application can significantly improve debugging efficiency, reduce time wasted due to wiring errors, and make the debugging process smoother and more efficient. After debugging, only the interface board is kept in the equipment box, which facilitates future troubleshooting. The logic switching board can be used for debugging by simply connecting the ribbon cable.
[0038] The scope of protection of this utility model includes, but is not limited to, the above embodiments. The scope of protection of this utility model is defined by the claims. Any substitutions, modifications, or improvements to this technology that are easily conceived by those skilled in the art shall fall within the scope of protection of this utility model.
Claims
1. An interface board device in a hydrological telemetry commissioning system, characterized in that, Including interface board, The interface board has a sensor side and a telemetry terminal side, and the sensor side and the telemetry terminal side are provided with corresponding matching interfaces. The interface board is equipped with relays for connecting to the corresponding interfaces; The sensor side is provided with several sensor side interfaces, and the telemetry terminal side is provided with several telemetry terminal side interfaces.
2. The interface board device in the hydrological telemetry debugging system according to claim 1, characterized in that, The sensor side is provided with six interfaces, namely: sensor side interface 2.1, sensor side interface 2.2, sensor side interface 2.3, sensor side interface 2.4, sensor side interface 2.5, and sensor side interface 2.6; The telemetry terminal side is equipped with six corresponding interfaces, namely: telemetry terminal side interface 1.1, telemetry terminal side interface 1.2, telemetry terminal side interface 1.3, telemetry terminal side interface 1.4, telemetry terminal side interface 1.5, and telemetry terminal side interface 1.
6. The sensor-side interface 2.1 and sensor-side interface 2.2 are the positive power supply interface and the negative power supply interface, respectively; The telemetry terminal side interface 1.1 and the telemetry terminal side interface 1.2 are the positive power supply interface and the negative power supply interface, respectively. The sensor-side interface 2.3 is a Tx signal line for connecting the sensor's RS232 signal, or an A signal line for connecting the RS485 signal, or an A signal line for connecting the RS422 signal transmitter. The telemetry terminal side interface 1.3 is the Rx signal line of the RS232 signal or the A signal line of the RS485 signal or the A signal line of the RS422 signal receiver of the telemetry terminal; The sensor-side interface 2.4 is the Rx signal line for connecting the sensor's RS232 signal, or the B signal line for connecting the RS485 signal, or the B signal line for connecting the RS422 signal transmitter. The telemetry terminal side interface 1.4 is a Tx signal line for connecting the telemetry terminal to the RS232 signal, or a B signal line for the RS485 signal, or a B signal line for the RS422 signal receiver. The sensor-side interface 2.5 is the A signal of the RS422 signal receiver; The telemetry terminal side interface 1.5 is the A signal of the RS422 signal transmitter; The sensor-side interface 2.6 is the B signal of the RS422 signal receiver; The telemetry terminal side interface 1.6 is the B signal of the RS422 signal transmitter.
3. The interface board device in the hydrological telemetry debugging system according to claim 2, characterized in that, Inside the interface board, the corresponding interfaces on the sensor side and the telemetry terminal side are connected using normally closed contacts of relays, wherein: The sensor-side interface 2.1, sensor-side interface 2.2 and telemetry terminal-side interface 1.1, telemetry terminal-side interface 1.2 are connected by a power relay; The sensor-side interfaces 2.3, 2.4, 2.5, and 2.6 are connected to the telemetry terminal-side interfaces 1.3, 1.4, 1.5, and 1.6 using normally closed contacts of signal relays.
4. The interface board device in the hydrological telemetry debugging system according to claim 3, characterized in that, A current sampling resistor is connected in series in the path of the sensor-side interface 2.1 and / or the telemetry terminal-side interface 1.1 to measure the current of the power supply.