CN212655311U - Programmable elevator safety circuit board - Google Patents
Programmable elevator safety circuit board Download PDFInfo
- Publication number
- CN212655311U CN212655311U CN202020440274.3U CN202020440274U CN212655311U CN 212655311 U CN212655311 U CN 212655311U CN 202020440274 U CN202020440274 U CN 202020440274U CN 212655311 U CN212655311 U CN 212655311U
- Authority
- CN
- China
- Prior art keywords
- processing unit
- logic processing
- circuit board
- safety circuit
- elevator safety
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Elevator Control (AREA)
Abstract
The utility model provides a programmable elevator safety circuit board, which comprises a first logic processing unit, a signal input interface and a plurality of external terminals which are respectively used for connecting a safety switch; the first logic processing unit comprises a first state detection pin and a first data input pin, and each external terminal is connected to one first state detection pin of the first logic processing unit; the first logic processing unit is connected with the signal input interface through the first data input pins and determines the input signal of each first state detection pin according to the function code of each first state detection pin input by the signal input interface. The utility model discloses elevator safety circuit board able to programme can confirm the input signal of each first state detection pin according to the function code of each first state detection pin of signal input interface input for elevator safety circuit board able to programme can connect different safety switch, has improved elevator safety circuit board able to programme's commonality.
Description
Technical Field
The embodiment of the utility model provides a relate to the elevator field, more specifically say, relate to an elevator safety circuit board able to programme.
Background
With the development of cities, high-rise buildings rise frequently, and the use of elevators is more and more popular. The elevator is a device which vertically moves among different floors in a shaft, a car door is arranged on an elevator car, a shaft door is correspondingly arranged on the wall of the shaft and leads to each floor, and passengers can get in and out of the car by opening the car door and the shaft door.
In order to ensure that the elevator can run safely, a plurality of electrical safety devices are arranged on the elevator, and the elevator can run only when each electrical safety device is normal. As shown in fig. 1, there is one safety switch corresponding to each electrical safety device (when the electrical safety device is normal, the corresponding safety switch is closed, otherwise, the safety switch is open), and all the safety switches K1, K2, …, Kn are connected in series to form a safety loop, in which a running contactor coil S1 and a band-type brake contactor coil S2 are further provided. When any safety switch K1-Kn in the safety loop is disconnected, so that the elevator is braked, and the elevator is safely stopped.
The safety switches in the safety chain are distributed at various positions of the elevator, and some safety switches are in a machine room, such as a main machine emergency stop switch, a hall door lock, a speed limiter switch and the like; some of the devices are arranged in a lift car, such as a lift car door lock, a lift car top emergency stop switch and the like; some in the hoistway, pit, etc. Therefore, the safety circuit needs to be bridged back and forth, which increases the cost of the cable, and in order to reduce the voltage loss on the safety circuit, a higher voltage circuit needs to be used, which is correspondingly higher in cost.
In addition, when the elevator is maintained and checked, the fault position of the elevator safety loop is not easy to detect and position, and the troubleshooting efficiency is low.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a need concatenate each safety switch to above-mentioned elevator safety circuit, lead to the cable kind many, connect complicated, the higher problem of cost, provide an elevator safety circuit board able to programme.
The embodiment of the present invention provides a programmable elevator safety circuit board, which comprises a first logic processing unit, a signal input interface, and a plurality of external terminals for connecting a safety switch respectively; the first logic processing unit comprises a first state detection pin and a first data input pin, and each external terminal is connected to one first state detection pin of the first logic processing unit; the first logic processing unit is connected with the signal input interface through a first data input pin, and determines an input signal of each first state detection pin according to a function code of each first state detection pin input by the signal input interface.
Preferably, the first logic processing unit comprises a first storage device arranged in the first logic processing unit, the programmable elevator safety circuit board is connected with an external device through the signal input interface, a function code of each first state detection pin input by the external device through the signal input interface is stored in the first storage device by the first logic processing unit, and the first logic processing unit determines an input signal of each first state detection pin according to the function code read from the first storage device.
Preferably, the programmable elevator safety circuit board comprises a second storage device connected with the first logic processing unit, and the programmable elevator safety circuit board is connected with an external device through the signal input interface, a function code of each first state detection pin input by the external device through the signal input interface is stored to the second storage device by the first logic processing unit, and the first logic processing unit determines an input signal of each first state detection pin according to the function code read from the second storage device.
Preferably, the programmable elevator safety circuit board comprises a first communication unit and a communication interface, and the first logic processing unit is connected with the communication interface via the first communication unit.
Preferably, the programmable elevator safety circuit board comprises a switch assembly for accessing a power supply circuit of an elevator brake control device, a control end of the switch assembly is connected with the first logic processing unit, and the first logic processing unit controls the switch assembly to be switched off when an input signal of any one first state detection pin is abnormal.
Preferably, the programmable elevator safety circuit board comprises a second logic processing unit, the second logic processing unit comprises a second state detection pin and a second data input pin, and each external terminal is connected to one second state detection pin of the second logic processing unit; the second logic processing unit is connected with the signal input interface through a second data input pin, and determines the input signal of each second state detection pin according to the function code of each second state detection pin input by the signal input interface.
Preferably, the programmable elevator safety circuit board comprises a second communication unit, and the second logic processing unit is connected with the communication interface via the second communication unit.
Preferably, the programmable elevator safety circuit board comprises a first safety relay and a second safety relay which are used for being connected to a power supply circuit of an elevator brake control device, and the first safety relay and the second safety relay are connected in series;
the control end of the first safety relay is connected with the first logic processing unit, and the first logic processing unit controls the first safety relay to be switched off when the input signal of any one first state detection pin is abnormal;
and the control end of the second safety relay is connected with the second logic processing unit, and the second logic processing unit controls the second safety relay to be disconnected when the input signal of any one second state detection pin is abnormal.
Preferably, the programmable elevator safety circuit board at least comprises twenty one external connection terminal, and the first logic processing unit at least comprises twenty one first state detection pin.
Implement the utility model discloses elevator safety circuit board able to programme has following beneficial effect: the first logic processing unit acquires the state of each safety switch according to the state of the external terminal, so that the safety switches are prevented from being connected in series; and the first logic processing unit determines the input signal of each first state detection pin according to the function code of each first state detection pin input by the signal input interface, so that the programmable elevator safety circuit board can be connected with different safety switches, and the universality of the programmable elevator safety circuit board is improved.
Drawings
Fig. 1 is a schematic view of a prior art elevator safety circuit;
fig. 2 is a schematic diagram of a programmable elevator safety circuit board provided by an embodiment of the present invention;
fig. 3 is a schematic diagram of a programmable elevator safety circuit board according to another embodiment of the present invention;
fig. 4 is a schematic diagram of a programmable elevator safety circuit board according to another embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 2, the embodiment of the present invention provides a schematic diagram of a Programmable elevator Safety circuit board, which can be used for detecting the state of a Safety switch in an elevator, and the Programmable elevator Safety circuit board 11 can meet the requirements of a pessarl (Programmable Electric Systems in Safety Related Applications for Lifts) based on the pessarl (Programmable Electric Systems). The programmable elevator safety circuit board 11 of this embodiment includes a first logic processing unit 111, a signal input interface 112, and a plurality of external terminals 113, and is connected to a plurality of safety switches (or switch signal detection circuits of the safety switches) through the plurality of external terminals 113, respectively. The safety switches can be switches or sensors corresponding to the electric safety devices in the elevator.
The first logic processing Unit 111 may adopt a Micro Controller Unit (MCU), a Programmable Logic Controller (PLC), and the like, and the first logic processing Unit 111 includes first state detection PINs PIN 1-PINn (n is an integer greater than 1) and a first data input PIN, and each external terminal 113 is connected to one of the first state detection PINs PIN 1-PINn of the first logic processing Unit 111. Moreover, the first logic processing unit 111 is further connected to the signal input interface 112 through the first data input PIN, and determines the input signal of each of the first state detection PINs PIN1 to PINn according to the function code of each of the first state detection PINs input by the signal input interface 112, so that the first logic processing unit 111 can obtain the state of each of the safety switches connected to the external terminal 113 through the first state detection PINs PIN1 to PINn in real time.
The signal input interface 112 can be used to connect an external device (e.g., a hand-held operator, etc.) so that the function code of each first status detection pin can be written to the programmable elevator safety circuit board through the external device. Because the safety switches of the elevator are different, the function code of each first state detection pin is input into the first logic processing unit 111 through the signal input interface 112, so that the first logic processing unit 111 can identify the corresponding safety switch signal according to the function code, the programmable elevator safety circuit board 11 can be connected with different safety switches through the external terminal 113, and the universality of the programmable elevator safety circuit board 11 is improved.
Specifically, the number of the first state detection PINs PIN 1-PINn and the number of the external terminals can be set according to the number of the maximum safety switches in the application environment of the programmable elevator safety circuit board 11. For example, in an existing elevator system, there are forty-one types of safety switches, where a machine room (including a hoistway, a pit, and the like) is provided with twenty types of safety switches (e.g., a turning hand wheel switch, a main machine emergency stop switch, a control cabinet emergency stop switch, a hall door lock switch, a speed limiter switch, and the like), and a car is provided with twenty types of safety switches (e.g., a safety gear switch, an upper forced deceleration switch, a lower forced deceleration switch, a safety window switch, a car door lock switch, and the like). In order to meet the maximum function requirement and take the generality into consideration, a function code may be set for each safety switch, the function code is, for example, any one number from 1 to 41, and the function codes of the safety switches are different, and accordingly, the programmable elevator safety circuit board 11 may be provided with twenty-one first state detection pins and twenty-one external terminals 113.
When the programmable elevator safety circuit board 11 is applied to a machine room safety switch (for example, the programmable elevator safety circuit board 11 is installed in a machine room) for collection, twenty-one function codes can be respectively set for twenty-one external terminals 113 through external equipment connected to the signal input interface 112: f1-1 to F1-21, each function code F1-1 to F1-21 can be set as the function code corresponding to the machine room safety switch, and further represents a safety switch to be detected. When the programmable elevator safety circuit board 11 is used for detecting the state of the car safety switch, namely the programmable elevator safety circuit board 11 is used as a car roof safety circuit board (for example, the programmable elevator safety circuit board 11 is installed on the car roof), F1-1-F1-20 can be set as function codes represented by the car safety switch. In this way, the programmable elevator safety circuit board 11 is adapted to both the machine room safety circuit board and the car roof safety circuit board.
In addition, for different elevator systems, the types of peripheral safety switches to be detected are different, and for the programmable elevator safety circuit board 11, the detection of different peripheral safety switches can be realized only by increasing the range of settable values of the function codes (for example, the settable value can be set to 1-100).
In an embodiment of the present invention, the first logic processing unit 111 may include a first storage device, such as a register, which is embedded therein, so that the first logic processing unit 111 can store the function code of each first state detection pin inputted by the signal input interface 112 into the first storage device, and the programmable elevator safety circuit board of this embodiment is connected to an external device through the signal input interface 112. The function code of each first status detection pin input by the external device through the signal input interface 112 is stored in the first storage device by the first logic processing unit 111, and the first logic processing unit 111 processes the signal of each first status detection pin according to the function code stored in the first storage device.
In another embodiment of the present invention, the first storage device can be replaced by a second storage device integrated into the programmable elevator safety circuit board 11, the second storage device is connected to the read/write pins of the first logic processing unit 111, for example, the second storage device can be a FLASH memory chip (FLASH), accordingly, the first logic processing unit 111 can store the function code of each first state detection pin input by the external device through the signal input interface 112 into the second storage device through the read/write pins thereof, and the first logic processing unit 111 processes the signal of each first state detection pin according to the function code stored in the second storage device.
As shown in fig. 3, the programmable elevator safety circuit board 11 may further include a first communication unit 114 and a communication interface 115 in addition to the first logic processing unit 111, the signal input interface 112 and the external terminal 113, the communication interface 115 may be connected to other programmable elevator safety circuit boards through a serial communication bus, and the first logic processing unit 111 is connected to the communication interface 115 through the first communication unit 114. Therefore, the first logic processing unit 111 can upload the state of the safety switch obtained by the current programmable elevator safety circuit board 11 to the programmable elevator safety circuit board connected thereto (for example, the current programmable elevator safety circuit board 11 is a car roof safety circuit board, and the programmable elevator safety circuit board connected thereto is a machine room safety circuit board) through the first communication unit 114 and the communication interface 115, or receive the state of the safety switch obtained by the programmable elevator safety circuit board connected thereto from the programmable elevator safety circuit board connected thereto through the first communication unit 114 and the communication interface 115 (for example, the current programmable elevator safety circuit board 11 is a machine room safety circuit board, and the programmable elevator safety circuit board connected thereto is a car roof safety circuit board).
In addition, in order to make the programmable elevator safety circuit board 11 applicable to the machine room and simultaneously implement the safety loop function, the programmable elevator safety circuit board 11 may further include a switch assembly 118 for accessing a power supply circuit of the elevator brake control device, and a control terminal of the switch assembly 118 is connected with the first logic processing unit 111. The switch assembly 118 may be connected in series to a power supply loop of an elevator brake control device (e.g., an operating contactor coil and a brake contactor coil), and the first logic processing unit 111 controls the switch assembly to be turned off when an input signal of any one of the first state detection pins is abnormal (i.e., a safety switch connected to the corresponding external terminal 113 is turned off), that is, when any safety switch is abnormal, the programmable elevator safety circuit board 11 may power off the elevator brake control device to control the elevator to stop operating and brake.
In order to improve the safety of data transmission between two programmable elevator safety circuit boards 11 (e.g., a machine room safety circuit board and a car roof safety circuit board), as shown in fig. 4, in another embodiment of the present invention, the programmable elevator safety circuit board 11 includes a second logic processing unit 116, a first communication unit 114, a second communication unit 117, and a communication interface 115, in addition to the first logic processing unit 111, the signal input interface 112, and external terminals respectively connected to the first logic processing unit 111. Wherein the first logic processing unit 111 is connected with the communication interface 115 via the first communication unit 114, so that the first logic processing unit 111 can perform data interaction with other programmable elevator safety circuit boards through the first communication unit 114 and the communication interface 115.
The second logic processing unit 116 includes a second status detection pin and a second data input pin, and each external terminal is connected to one second status detection pin of the second logic processing unit 116; the second logic processing unit 116 is further connected to the signal input interface 112 through a second data input pin, and determines an input signal of each second state detection pin according to the function code of each second state detection pin input by the signal input interface 112. In addition, the second logic processing unit 116 is also connected to the communication interface 115 via the second communication unit 117, so that the second logic processing unit 116 can perform data interaction with other programmable elevator safety circuit boards through the second communication unit 117 and the communication interface 115.
In addition, the programmable elevator safety circuit board 11 further comprises a first safety relay and a second safety relay for accessing to a power supply circuit of the elevator brake control device, i.e. the switch assembly consists of the first safety relay and the second safety relay, and the first safety relay and the second safety relay are connected in series. The control end of the first safety relay is connected with the first logic processing unit 111, and the first logic processing unit 111 controls the first safety relay to be disconnected when the input signal of any one of the first state detection pins is abnormal; the control end of the second safety relay is connected to the second logic processing unit 116, and the second logic processing unit 116 controls the second safety relay to be turned off when the input signal of any one of the second state detection pins is abnormal. By the mode, the reliability of the elevator safety loop can be improved.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. A programmable elevator safety circuit board is characterized by comprising a first logic processing unit, a signal input interface and a plurality of external terminals which are respectively used for connecting a safety switch; the first logic processing unit comprises a first state detection pin and a first data input pin, and each external terminal is connected to one first state detection pin of the first logic processing unit; the first logic processing unit is connected with the signal input interface through a first data input pin, and determines an input signal of each first state detection pin according to a function code of each first state detection pin input by the signal input interface.
2. The programmable elevator safety circuit board of claim 1, wherein the first logic processing unit comprises a first memory device built in, and the programmable elevator safety circuit board is connected to an external device through the signal input interface, a function code of each first status detection pin inputted by the external device through the signal input interface is stored to the first memory device by the first logic processing unit, and the first logic processing unit determines an input signal of each first status detection pin according to the function code read from the first memory device.
3. The programmable elevator safety circuit board of claim 1, wherein the programmable elevator safety circuit board comprises a second storage device connected with the first logic processing unit, and the programmable elevator safety circuit board is connected with an external device through the signal input interface, a function code of each first state detection pin input by the external device through the signal input interface is stored to the second storage device by the first logic processing unit, and the first logic processing device determines an input signal of each first state detection pin according to the function code read from the second storage device.
4. The programmable elevator safety circuit board of claim 1, wherein the programmable elevator safety circuit board comprises a first communication unit and a communication interface, and the first logic processing unit is connected with the communication interface via the first communication unit.
5. The programmable elevator safety circuit board of claim 1, comprising a switch assembly for accessing a power supply circuit of an elevator brake control device, wherein a control terminal of the switch assembly is connected to the first logic processing unit, and the first logic processing unit controls the switch assembly to be turned off when an input signal of any one of the first status detection pins is abnormal.
6. The programmable elevator safety circuit board of claim 4, wherein the programmable elevator safety circuit board comprises a second logic processing unit, the second logic processing unit comprises a second status detection pin and a second data input pin, and each external terminal is connected to one second status detection pin of the second logic processing unit; the second logic processing unit is connected with the signal input interface through a second data input pin, and determines the input signal of each second state detection pin according to the function code of each second state detection pin input by the signal input interface.
7. The programmable elevator safety circuit board of claim 6, wherein the programmable elevator safety circuit board comprises a second communication unit, and the second logic processing unit is connected with the communication interface via the second communication unit.
8. The programmable elevator safety circuit board of claim 6, wherein the programmable elevator safety circuit board comprises a first safety relay and a second safety relay for accessing a power supply circuit of an elevator brake control device, and the first safety relay and the second safety relay are connected in series;
the control end of the first safety relay is connected with the first logic processing unit, and the first logic processing unit controls the first safety relay to be switched off when the input signal of any one first state detection pin is abnormal;
and the control end of the second safety relay is connected with the second logic processing unit, and the second logic processing unit controls the second safety relay to be disconnected when the input signal of any one second state detection pin is abnormal.
9. The programmable elevator safety circuit board of claim 1, wherein the programmable elevator safety circuit board comprises at least twenty one of the external terminals, and the first logic processing unit comprises at least twenty one of the first status detection pins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020440274.3U CN212655311U (en) | 2020-03-31 | 2020-03-31 | Programmable elevator safety circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020440274.3U CN212655311U (en) | 2020-03-31 | 2020-03-31 | Programmable elevator safety circuit board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212655311U true CN212655311U (en) | 2021-03-05 |
Family
ID=74765016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020440274.3U Active CN212655311U (en) | 2020-03-31 | 2020-03-31 | Programmable elevator safety circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212655311U (en) |
-
2020
- 2020-03-31 CN CN202020440274.3U patent/CN212655311U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108394775B (en) | Elevator safety system and safety control method | |
| CN101616858B (en) | Unintended movement governor | |
| CN1953926B (en) | Elevator device | |
| RU2543476C2 (en) | Safety circuit in lift unit | |
| CN101646619A (en) | Elevator device | |
| JP4831995B2 (en) | Elevator safety control device | |
| US9718642B2 (en) | Device for detecting position of an elevator car with mechanical switching means | |
| CN104555641A (en) | Safety system of elevator | |
| CN113460824A (en) | Elevator safety loop fault detection system, method, equipment and storage medium | |
| CN212655311U (en) | Programmable elevator safety circuit board | |
| CN212374646U (en) | Elevator safety loop system | |
| CN112978524A (en) | Elevator function safety control system | |
| US4128143A (en) | Supervisory control means for automatic elevator systems | |
| CN112456267B (en) | Electrical safety detection control circuit for elevator maintenance operation | |
| CN112010141B (en) | Safety switch and detection system | |
| CN213568965U (en) | Electronic safety plate and elevator electronic safety system | |
| CN212374642U (en) | Electronic safety system for elevator | |
| CN203033580U (en) | Electric lift car location confirming device | |
| CN212655312U (en) | Elevator safety control system | |
| CN113460822A (en) | Elevator electronic safety system, method, apparatus and computer readable storage medium | |
| CN113460823B (en) | Door lock short-circuit fault diagnosis system, method, equipment and storage medium | |
| CN113460818B (en) | Elevator electronic board communication system, method, device and computer readable storage medium | |
| CN203033579U (en) | Elevator cab position confirmation device | |
| RU2791781C1 (en) | Passenger-and-freight elevator control system | |
| EP4029819B1 (en) | Voltage signal processing unit, landing door fault location system and method, elevator system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |